diff --git a/Documentation/ABI/testing/sysfs-firmware-sfi b/Documentation/ABI/testing/sysfs-firmware-sfi
new file mode 100644
index 0000000..4be7d44
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sfi
@@ -0,0 +1,15 @@
+What:		/sys/firmware/sfi/tables/
+Date:		May 2010
+Contact:	Len Brown <lenb@kernel.org>
+Description:
+		SFI defines a number of small static memory tables
+		so the kernel can get platform information from firmware.
+
+		The tables are defined in the latest SFI specification:
+		http://simplefirmware.org/documentation
+
+		While the tables are used by the kernel, user-space
+		can observe them this way:
+
+		# cd /sys/firmware/sfi/tables
+		# cat $TABLENAME > $TABLENAME.bin
diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
index 2e435ad..98ce517 100644
--- a/Documentation/DMA-API-HOWTO.txt
+++ b/Documentation/DMA-API-HOWTO.txt
@@ -639,6 +639,36 @@
 they are entirely deprecated.  Some ports already do not provide these
 as it is impossible to correctly support them.
 
+			Handling Errors
+
+DMA address space is limited on some architectures and an allocation
+failure can be determined by:
+
+- checking if dma_alloc_coherent returns NULL or dma_map_sg returns 0
+
+- checking the returned dma_addr_t of dma_map_single and dma_map_page
+  by using dma_mapping_error():
+
+	dma_addr_t dma_handle;
+
+	dma_handle = dma_map_single(dev, addr, size, direction);
+	if (dma_mapping_error(dev, dma_handle)) {
+		/*
+		 * reduce current DMA mapping usage,
+		 * delay and try again later or
+		 * reset driver.
+		 */
+	}
+
+Networking drivers must call dev_kfree_skb to free the socket buffer
+and return NETDEV_TX_OK if the DMA mapping fails on the transmit hook
+(ndo_start_xmit). This means that the socket buffer is just dropped in
+the failure case.
+
+SCSI drivers must return SCSI_MLQUEUE_HOST_BUSY if the DMA mapping
+fails in the queuecommand hook. This means that the SCSI subsystem
+passes the command to the driver again later.
+
 		Optimizing Unmap State Space Consumption
 
 On many platforms, dma_unmap_{single,page}() is simply a nop.
@@ -703,42 +733,25 @@
 
 1) Struct scatterlist requirements.
 
-   Struct scatterlist must contain, at a minimum, the following
-   members:
+   Don't invent the architecture specific struct scatterlist; just use
+   <asm-generic/scatterlist.h>. You need to enable
+   CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs
+   (including software IOMMU).
 
-	struct page *page;
-	unsigned int offset;
-	unsigned int length;
+2) ARCH_KMALLOC_MINALIGN
 
-   The base address is specified by a "page+offset" pair.
+   Architectures must ensure that kmalloc'ed buffer is
+   DMA-safe. Drivers and subsystems depend on it. If an architecture
+   isn't fully DMA-coherent (i.e. hardware doesn't ensure that data in
+   the CPU cache is identical to data in main memory),
+   ARCH_KMALLOC_MINALIGN must be set so that the memory allocator
+   makes sure that kmalloc'ed buffer doesn't share a cache line with
+   the others. See arch/arm/include/asm/cache.h as an example.
 
-   Previous versions of struct scatterlist contained a "void *address"
-   field that was sometimes used instead of page+offset.  As of Linux
-   2.5., page+offset is always used, and the "address" field has been
-   deleted.
-
-2) More to come...
-
-			Handling Errors
-
-DMA address space is limited on some architectures and an allocation
-failure can be determined by:
-
-- checking if dma_alloc_coherent returns NULL or dma_map_sg returns 0
-
-- checking the returned dma_addr_t of dma_map_single and dma_map_page
-  by using dma_mapping_error():
-
-	dma_addr_t dma_handle;
-
-	dma_handle = dma_map_single(dev, addr, size, direction);
-	if (dma_mapping_error(dev, dma_handle)) {
-		/*
-		 * reduce current DMA mapping usage,
-		 * delay and try again later or
-		 * reset driver.
-		 */
-	}
+   Note that ARCH_KMALLOC_MINALIGN is about DMA memory alignment
+   constraints. You don't need to worry about the architecture data
+   alignment constraints (e.g. the alignment constraints about 64-bit
+   objects).
 
 			   Closing
 
diff --git a/Documentation/SubmittingDrivers b/Documentation/SubmittingDrivers
index 99e72a8..4947fd8 100644
--- a/Documentation/SubmittingDrivers
+++ b/Documentation/SubmittingDrivers
@@ -130,6 +130,8 @@
 	ftp.??.kernel.org:/pub/linux/kernel/...
 	?? == your country code, such as "us", "uk", "fr", etc.
 
+	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git
+
 Linux kernel mailing list:
 	linux-kernel@vger.kernel.org
 	[mail majordomo@vger.kernel.org to subscribe]
@@ -160,3 +162,6 @@
 
 Kernel Janitor:
 	http://janitor.kernelnewbies.org/
+
+GIT, Fast Version Control System:
+	http://git-scm.com/
diff --git a/Documentation/acpi/apei/einj.txt b/Documentation/acpi/apei/einj.txt
new file mode 100644
index 0000000..dfab718
--- /dev/null
+++ b/Documentation/acpi/apei/einj.txt
@@ -0,0 +1,59 @@
+			APEI Error INJection
+			~~~~~~~~~~~~~~~~~~~~
+
+EINJ provides a hardware error injection mechanism
+It is very useful for debugging and testing of other APEI and RAS features.
+
+To use EINJ, make sure the following are enabled in your kernel
+configuration:
+
+CONFIG_DEBUG_FS
+CONFIG_ACPI_APEI
+CONFIG_ACPI_APEI_EINJ
+
+The user interface of EINJ is debug file system, under the
+directory apei/einj. The following files are provided.
+
+- available_error_type
+  Reading this file returns the error injection capability of the
+  platform, that is, which error types are supported. The error type
+  definition is as follow, the left field is the error type value, the
+  right field is error description.
+
+    0x00000001	Processor Correctable
+    0x00000002	Processor Uncorrectable non-fatal
+    0x00000004	Processor Uncorrectable fatal
+    0x00000008  Memory Correctable
+    0x00000010  Memory Uncorrectable non-fatal
+    0x00000020  Memory Uncorrectable fatal
+    0x00000040	PCI Express Correctable
+    0x00000080	PCI Express Uncorrectable fatal
+    0x00000100	PCI Express Uncorrectable non-fatal
+    0x00000200	Platform Correctable
+    0x00000400	Platform Uncorrectable non-fatal
+    0x00000800	Platform Uncorrectable fatal
+
+  The format of file contents are as above, except there are only the
+  available error type lines.
+
+- error_type
+  This file is used to set the error type value. The error type value
+  is defined in "available_error_type" description.
+
+- error_inject
+  Write any integer to this file to trigger the error
+  injection. Before this, please specify all necessary error
+  parameters.
+
+- param1
+  This file is used to set the first error parameter value. Effect of
+  parameter depends on error_type specified. For memory error, this is
+  physical memory address.
+
+- param2
+  This file is used to set the second error parameter value. Effect of
+  parameter depends on error_type specified. For memory error, this is
+  physical memory address mask.
+
+For more information about EINJ, please refer to ACPI specification
+version 4.0, section 17.5.
diff --git a/Documentation/arm/Samsung-S3C24XX/GPIO.txt b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
index 2af2cf3..816d607 100644
--- a/Documentation/arm/Samsung-S3C24XX/GPIO.txt
+++ b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
@@ -12,6 +12,8 @@
   of the s3c2410 GPIO system, please read the Samsung provided
   data-sheet/users manual to find out the complete list.
 
+  See Documentation/arm/Samsung/GPIO.txt for the core implemetation.
+
 
 GPIOLIB
 -------
@@ -24,8 +26,60 @@
   listed below will be removed (they may be marked as __deprecated
   in the near future).
 
-  - s3c2410_gpio_getpin
-  - s3c2410_gpio_setpin
+  The following functions now either have a s3c_ specific variant
+  or are merged into gpiolib. See the definitions in
+  arch/arm/plat-samsung/include/plat/gpio-cfg.h:
+
+  s3c2410_gpio_setpin()		gpio_set_value() or gpio_direction_output()
+  s3c2410_gpio_getpin()		gpio_get_value() or gpio_direction_input()
+  s3c2410_gpio_getirq()		gpio_to_irq()
+  s3c2410_gpio_cfgpin()		s3c_gpio_cfgpin()
+  s3c2410_gpio_getcfg()		s3c_gpio_getcfg()
+  s3c2410_gpio_pullup()		s3c_gpio_setpull()
+
+
+GPIOLIB conversion
+------------------
+
+If you need to convert your board or driver to use gpiolib from the exiting
+s3c2410 api, then here are some notes on the process.
+
+1) If your board is exclusively using an GPIO, say to control peripheral
+   power, then it will require to claim the gpio with gpio_request() before
+   it can use it.
+
+   It is recommended to check the return value, with at least WARN_ON()
+   during initialisation.
+
+2) The s3c2410_gpio_cfgpin() can be directly replaced with s3c_gpio_cfgpin()
+   as they have the same arguments, and can either take the pin specific
+   values, or the more generic special-function-number arguments.
+
+3) s3c2410_gpio_pullup() changs have the problem that whilst the 
+   s3c2410_gpio_pullup(x, 1) can be easily translated to the
+   s3c_gpio_setpull(x, S3C_GPIO_PULL_NONE), the s3c2410_gpio_pullup(x, 0)
+   are not so easy.
+
+   The s3c2410_gpio_pullup(x, 0) case enables the pull-up (or in the case
+   of some of the devices, a pull-down) and as such the new API distinguishes
+   between the UP and DOWN case. There is currently no 'just turn on' setting
+   which may be required if this becomes a problem.
+
+4) s3c2410_gpio_setpin() can be replaced by gpio_set_value(), the old call
+   does not implicitly configure the relevant gpio to output. The gpio
+   direction should be changed before using gpio_set_value().
+
+5) s3c2410_gpio_getpin() is replaceable by gpio_get_value() if the pin
+   has been set to input. It is currently unknown what the behaviour is
+   when using gpio_get_value() on an output pin (s3c2410_gpio_getpin
+   would return the value the pin is supposed to be outputting).
+
+6) s3c2410_gpio_getirq() should be directly replacable with the
+   gpio_to_irq() call.
+
+The s3c2410_gpio and gpio_ calls have always operated on the same gpio
+numberspace, so there is no problem with converting the gpio numbering
+between the calls.
 
 
 Headers
@@ -54,6 +108,11 @@
   eg S3C2410_GPA(0) or S3C2410_GPF(1). These defines are used to tell
   the GPIO functions which pin is to be used.
 
+  With the conversion to gpiolib, there is no longer a direct conversion
+  from gpio pin number to register base address as in earlier kernels. This
+  is due to the number space required for newer SoCs where the later
+  GPIOs are not contiguous.
+
 
 Configuring a pin
 -----------------
@@ -71,6 +130,8 @@
    which would turn GPA(0) into the lowest Address line A0, and set
    GPE(8) to be connected to the SDIO/MMC controller's SDDAT1 line.
 
+   The s3c_gpio_cfgpin() call is a functional replacement for this call.
+
 
 Reading the current configuration
 ---------------------------------
@@ -82,6 +143,9 @@
   The return value will be from the same set of values which can be
   passed to s3c2410_gpio_cfgpin().
 
+  The s3c_gpio_getcfg() call should be a functional replacement for
+  this call.
+
 
 Configuring a pull-up resistor
 ------------------------------
@@ -95,6 +159,10 @@
   Where the to value is zero to set the pull-up off, and 1 to enable
   the specified pull-up. Any other values are currently undefined.
 
+  The s3c_gpio_setpull() offers similar functionality, but with the
+  ability to encode whether the pull is up or down. Currently there
+  is no 'just on' state, so up or down must be selected.
+
 
 Getting the state of a PIN
 --------------------------
@@ -106,6 +174,9 @@
   This will return either zero or non-zero. Do not count on this
   function returning 1 if the pin is set.
 
+  This call is now implemented by the relevant gpiolib calls, convert
+  your board or driver to use gpiolib.
+
 
 Setting the state of a PIN
 --------------------------
@@ -117,6 +188,9 @@
   Which sets the given pin to the value. Use 0 to write 0, and 1 to
   set the output to 1.
 
+  This call is now implemented by the relevant gpiolib calls, convert
+  your board or driver to use gpiolib.
+
 
 Getting the IRQ number associated with a PIN
 --------------------------------------------
@@ -128,6 +202,9 @@
 
   Note, not all pins have an IRQ.
 
+  This call is now implemented by the relevant gpiolib calls, convert
+  your board or driver to use gpiolib.
+
 
 Authour
 -------
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index 081892d..c12bfc1 100644
--- a/Documentation/arm/Samsung-S3C24XX/Overview.txt
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -8,10 +8,16 @@
 
   The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
   by the 's3c2410' architecture of ARM Linux. Currently the S3C2410,
-  S3C2412, S3C2413, S3C2440, S3C2442 and S3C2443 devices are supported.
+  S3C2412, S3C2413, S3C2416 S3C2440, S3C2442, S3C2443 and S3C2450 devices
+  are supported.
 
   Support for the S3C2400 and S3C24A0 series are in progress.
 
+  The S3C2416 and S3C2450 devices are very similar and S3C2450 support is
+  included under the arch/arm/mach-s3c2416 directory. Note, whilst core
+  support for these SoCs is in, work on some of the extra peripherals
+  and extra interrupts is still ongoing.
+
 
 Configuration
 -------------
@@ -209,6 +215,13 @@
   Newer kernels carry GPIOLIB, and support is being moved towards
   this with some of the older support in line to be removed.
 
+  As of v2.6.34, the move towards using gpiolib support is almost
+  complete, and very little of the old calls are left.
+
+  See Documentation/arm/Samsung-S3C24XX/GPIO.txt for the S3C24XX specific
+  support and Documentation/arm/Samsung/GPIO.txt for the core Samsung
+  implementation.
+
 
 Clock Management
 ----------------
diff --git a/Documentation/arm/Samsung/GPIO.txt b/Documentation/arm/Samsung/GPIO.txt
new file mode 100644
index 0000000..05850c6
--- /dev/null
+++ b/Documentation/arm/Samsung/GPIO.txt
@@ -0,0 +1,42 @@
+		Samsung GPIO implementation
+		===========================
+
+Introduction
+------------
+
+This outlines the Samsung GPIO implementation and the architecture
+specfic calls provided alongisde the drivers/gpio core.
+
+
+S3C24XX (Legacy)
+----------------
+
+See Documentation/arm/Samsung-S3C24XX/GPIO.txt for more information
+about these devices. Their implementation is being brought into line
+with the core samsung implementation described in this document.
+
+
+GPIOLIB integration
+-------------------
+
+The gpio implementation uses gpiolib as much as possible, only providing
+specific calls for the items that require Samsung specific handling, such
+as pin special-function or pull resistor control.
+
+GPIO numbering is synchronised between the Samsung and gpiolib system.
+
+
+PIN configuration
+-----------------
+
+Pin configuration is specific to the Samsung architecutre, with each SoC
+registering the necessary information for the core gpio configuration
+implementation to configure pins as necessary.
+
+The s3c_gpio_cfgpin() and s3c_gpio_setpull() provide the means for a
+driver or machine to change gpio configuration.
+
+See arch/arm/plat-samsung/include/plat/gpio-cfg.h for more information
+on these functions.
+
+
diff --git a/Documentation/arm/Samsung/Overview.txt b/Documentation/arm/Samsung/Overview.txt
index 7cced1f..c3094ea 100644
--- a/Documentation/arm/Samsung/Overview.txt
+++ b/Documentation/arm/Samsung/Overview.txt
@@ -13,9 +13,10 @@
 
   - S3C24XX: See Documentation/arm/Samsung-S3C24XX/Overview.txt for full list
   - S3C64XX: S3C6400 and S3C6410
-  - S5PC6440
-
-  S5PC100 and S5PC110 support is currently being merged
+  - S5P6440
+  - S5P6442
+  - S5PC100
+  - S5PC110 / S5PV210
 
 
 S3C24XX Systems
@@ -35,7 +36,10 @@
   unifying all the SoCs into one kernel.
 
   s5p6440_defconfig - S5P6440 specific default configuration
+  s5p6442_defconfig - S5P6442 specific default configuration
   s5pc100_defconfig - S5PC100 specific default configuration
+  s5pc110_defconfig - S5PC110 specific default configuration
+  s5pv210_defconfig - S5PV210 specific default configuration
 
 
 Layout
@@ -50,18 +54,27 @@
   specific information. It contains the base clock, GPIO and device definitions
   to get the system running.
 
-  plat-s3c is the s3c24xx/s3c64xx platform directory, although it is currently
-  involved in other builds this will be phased out once the relevant code is
-  moved elsewhere.
-
   plat-s3c24xx is for s3c24xx specific builds, see the S3C24XX docs.
 
-  plat-s3c64xx is for the s3c64xx specific bits, see the S3C24XX docs.
-
-  plat-s5p is for s5p specific builds, more to be added.
+  plat-s5p is for s5p specific builds, and contains common support for the
+  S5P specific systems. Not all S5Ps use all the features in this directory
+  due to differences in the hardware.
 
 
-  [ to finish ]
+Layout changes
+--------------
+
+  The old plat-s3c and plat-s5pc1xx directories have been removed, with
+  support moved to either plat-samsung or plat-s5p as necessary. These moves
+  where to simplify the include and dependency issues involved with having
+  so many different platform directories.
+
+  It was decided to remove plat-s5pc1xx as some of the support was already
+  in plat-s5p or plat-samsung, with the S5PC110 support added with S5PV210
+  the only user was the S5PC100. The S5PC100 specific items where moved to
+  arch/arm/mach-s5pc100.
+
+
 
 
 Port Contributors
diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt
index 57444c2..b34823f 100644
--- a/Documentation/cgroups/cgroups.txt
+++ b/Documentation/cgroups/cgroups.txt
@@ -339,7 +339,7 @@
 The "xxx" is not interpreted by the cgroup code, but will appear in
 /proc/mounts so may be any useful identifying string that you like.
 
-To mount a cgroup hierarchy with just the cpuset and numtasks
+To mount a cgroup hierarchy with just the cpuset and memory
 subsystems, type:
 # mount -t cgroup -o cpuset,memory hier1 /dev/cgroup
 
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index 6cab1f2..7781857 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -1,18 +1,15 @@
 Memory Resource Controller
 
 NOTE: The Memory Resource Controller has been generically been referred
-to as the memory controller in this document. Do not confuse memory controller
-used here with the memory controller that is used in hardware.
+      to as the memory controller in this document. Do not confuse memory
+      controller used here with the memory controller that is used in hardware.
 
-Salient features
-
-a. Enable control of Anonymous, Page Cache (mapped and unmapped) and
-   Swap Cache memory pages.
-b. The infrastructure allows easy addition of other types of memory to control
-c. Provides *zero overhead* for non memory controller users
-d. Provides a double LRU: global memory pressure causes reclaim from the
-   global LRU; a cgroup on hitting a limit, reclaims from the per
-   cgroup LRU
+(For editors)
+In this document:
+      When we mention a cgroup (cgroupfs's directory) with memory controller,
+      we call it "memory cgroup". When you see git-log and source code, you'll
+      see patch's title and function names tend to use "memcg".
+      In this document, we avoid using it.
 
 Benefits and Purpose of the memory controller
 
@@ -33,6 +30,45 @@
 e. There are several other use cases, find one or use the controller just
    for fun (to learn and hack on the VM subsystem).
 
+Current Status: linux-2.6.34-mmotm(development version of 2010/April)
+
+Features:
+ - accounting anonymous pages, file caches, swap caches usage and limiting them.
+ - private LRU and reclaim routine. (system's global LRU and private LRU
+   work independently from each other)
+ - optionally, memory+swap usage can be accounted and limited.
+ - hierarchical accounting
+ - soft limit
+ - moving(recharging) account at moving a task is selectable.
+ - usage threshold notifier
+ - oom-killer disable knob and oom-notifier
+ - Root cgroup has no limit controls.
+
+ Kernel memory and Hugepages are not under control yet. We just manage
+ pages on LRU. To add more controls, we have to take care of performance.
+
+Brief summary of control files.
+
+ tasks				 # attach a task(thread) and show list of threads
+ cgroup.procs			 # show list of processes
+ cgroup.event_control		 # an interface for event_fd()
+ memory.usage_in_bytes		 # show current memory(RSS+Cache) usage.
+ memory.memsw.usage_in_bytes	 # show current memory+Swap usage
+ memory.limit_in_bytes		 # set/show limit of memory usage
+ memory.memsw.limit_in_bytes	 # set/show limit of memory+Swap usage
+ memory.failcnt			 # show the number of memory usage hits limits
+ memory.memsw.failcnt		 # show the number of memory+Swap hits limits
+ memory.max_usage_in_bytes	 # show max memory usage recorded
+ memory.memsw.usage_in_bytes	 # show max memory+Swap usage recorded
+ memory.soft_limit_in_bytes	 # set/show soft limit of memory usage
+ memory.stat			 # show various statistics
+ memory.use_hierarchy		 # set/show hierarchical account enabled
+ memory.force_empty		 # trigger forced move charge to parent
+ memory.swappiness		 # set/show swappiness parameter of vmscan
+				 (See sysctl's vm.swappiness)
+ memory.move_charge_at_immigrate # set/show controls of moving charges
+ memory.oom_control		 # set/show oom controls.
+
 1. History
 
 The memory controller has a long history. A request for comments for the memory
@@ -106,14 +142,14 @@
 is over its limit. If it is then reclaim is invoked on the cgroup.
 More details can be found in the reclaim section of this document.
 If everything goes well, a page meta-data-structure called page_cgroup is
-allocated and associated with the page.  This routine also adds the page to
-the per cgroup LRU.
+updated. page_cgroup has its own LRU on cgroup.
+(*) page_cgroup structure is allocated at boot/memory-hotplug time.
 
 2.2.1 Accounting details
 
 All mapped anon pages (RSS) and cache pages (Page Cache) are accounted.
-(some pages which never be reclaimable and will not be on global LRU
- are not accounted. we just accounts pages under usual vm management.)
+Some pages which are never reclaimable and will not be on the global LRU
+are not accounted. We just account pages under usual VM management.
 
 RSS pages are accounted at page_fault unless they've already been accounted
 for earlier. A file page will be accounted for as Page Cache when it's
@@ -121,12 +157,19 @@
 processes, duplicate accounting is carefully avoided.
 
 A RSS page is unaccounted when it's fully unmapped. A PageCache page is
-unaccounted when it's removed from radix-tree.
+unaccounted when it's removed from radix-tree. Even if RSS pages are fully
+unmapped (by kswapd), they may exist as SwapCache in the system until they
+are really freed. Such SwapCaches also also accounted.
+A swapped-in page is not accounted until it's mapped.
+
+Note: The kernel does swapin-readahead and read multiple swaps at once.
+This means swapped-in pages may contain pages for other tasks than a task
+causing page fault. So, we avoid accounting at swap-in I/O.
 
 At page migration, accounting information is kept.
 
-Note: we just account pages-on-lru because our purpose is to control amount
-of used pages. not-on-lru pages are tend to be out-of-control from vm view.
+Note: we just account pages-on-LRU because our purpose is to control amount
+of used pages; not-on-LRU pages tend to be out-of-control from VM view.
 
 2.3 Shared Page Accounting
 
@@ -143,6 +186,7 @@
 
 
 2.4 Swap Extension (CONFIG_CGROUP_MEM_RES_CTLR_SWAP)
+
 Swap Extension allows you to record charge for swap. A swapped-in page is
 charged back to original page allocator if possible.
 
@@ -150,13 +194,20 @@
  - memory.memsw.usage_in_bytes.
  - memory.memsw.limit_in_bytes.
 
-usage of mem+swap is limited by memsw.limit_in_bytes.
+memsw means memory+swap. Usage of memory+swap is limited by
+memsw.limit_in_bytes.
 
-* why 'mem+swap' rather than swap.
+Example: Assume a system with 4G of swap. A task which allocates 6G of memory
+(by mistake) under 2G memory limitation will use all swap.
+In this case, setting memsw.limit_in_bytes=3G will prevent bad use of swap.
+By using memsw limit, you can avoid system OOM which can be caused by swap
+shortage.
+
+* why 'memory+swap' rather than swap.
 The global LRU(kswapd) can swap out arbitrary pages. Swap-out means
 to move account from memory to swap...there is no change in usage of
-mem+swap. In other words, when we want to limit the usage of swap without
-affecting global LRU, mem+swap limit is better than just limiting swap from
+memory+swap. In other words, when we want to limit the usage of swap without
+affecting global LRU, memory+swap limit is better than just limiting swap from
 OS point of view.
 
 * What happens when a cgroup hits memory.memsw.limit_in_bytes
@@ -168,12 +219,12 @@
 
 2.5 Reclaim
 
-Each cgroup maintains a per cgroup LRU that consists of an active
-and inactive list. When a cgroup goes over its limit, we first try
+Each cgroup maintains a per cgroup LRU which has the same structure as
+global VM. When a cgroup goes over its limit, we first try
 to reclaim memory from the cgroup so as to make space for the new
 pages that the cgroup has touched. If the reclaim is unsuccessful,
 an OOM routine is invoked to select and kill the bulkiest task in the
-cgroup.
+cgroup. (See 10. OOM Control below.)
 
 The reclaim algorithm has not been modified for cgroups, except that
 pages that are selected for reclaiming come from the per cgroup LRU
@@ -184,13 +235,22 @@
 
 Note2: When panic_on_oom is set to "2", the whole system will panic.
 
-2. Locking
+When oom event notifier is registered, event will be delivered.
+(See oom_control section)
 
-The memory controller uses the following hierarchy
+2.6 Locking
 
-1. zone->lru_lock is used for selecting pages to be isolated
-2. mem->per_zone->lru_lock protects the per cgroup LRU (per zone)
-3. lock_page_cgroup() is used to protect page->page_cgroup
+   lock_page_cgroup()/unlock_page_cgroup() should not be called under
+   mapping->tree_lock.
+
+   Other lock order is following:
+   PG_locked.
+   mm->page_table_lock
+       zone->lru_lock
+	  lock_page_cgroup.
+  In many cases, just lock_page_cgroup() is called.
+  per-zone-per-cgroup LRU (cgroup's private LRU) is just guarded by
+  zone->lru_lock, it has no lock of its own.
 
 3. User Interface
 
@@ -199,6 +259,7 @@
 a. Enable CONFIG_CGROUPS
 b. Enable CONFIG_RESOURCE_COUNTERS
 c. Enable CONFIG_CGROUP_MEM_RES_CTLR
+d. Enable CONFIG_CGROUP_MEM_RES_CTLR_SWAP (to use swap extension)
 
 1. Prepare the cgroups
 # mkdir -p /cgroups
@@ -206,31 +267,28 @@
 
 2. Make the new group and move bash into it
 # mkdir /cgroups/0
-# echo $$ >  /cgroups/0/tasks
+# echo $$ > /cgroups/0/tasks
 
-Since now we're in the 0 cgroup,
-We can alter the memory limit:
+Since now we're in the 0 cgroup, we can alter the memory limit:
 # echo 4M > /cgroups/0/memory.limit_in_bytes
 
 NOTE: We can use a suffix (k, K, m, M, g or G) to indicate values in kilo,
-mega or gigabytes.
+mega or gigabytes. (Here, Kilo, Mega, Giga are Kibibytes, Mebibytes, Gibibytes.)
+
 NOTE: We can write "-1" to reset the *.limit_in_bytes(unlimited).
 NOTE: We cannot set limits on the root cgroup any more.
 
 # cat /cgroups/0/memory.limit_in_bytes
 4194304
 
-NOTE: The interface has now changed to display the usage in bytes
-instead of pages
-
 We can check the usage:
 # cat /cgroups/0/memory.usage_in_bytes
 1216512
 
 A successful write to this file does not guarantee a successful set of
-this limit to the value written into the file.  This can be due to a
+this limit to the value written into the file. This can be due to a
 number of factors, such as rounding up to page boundaries or the total
-availability of memory on the system.  The user is required to re-read
+availability of memory on the system. The user is required to re-read
 this file after a write to guarantee the value committed by the kernel.
 
 # echo 1 > memory.limit_in_bytes
@@ -245,15 +303,23 @@
 
 4. Testing
 
-Balbir posted lmbench, AIM9, LTP and vmmstress results [10] and [11].
-Apart from that v6 has been tested with several applications and regular
-daily use. The controller has also been tested on the PPC64, x86_64 and
-UML platforms.
+For testing features and implementation, see memcg_test.txt.
+
+Performance test is also important. To see pure memory controller's overhead,
+testing on tmpfs will give you good numbers of small overheads.
+Example: do kernel make on tmpfs.
+
+Page-fault scalability is also important. At measuring parallel
+page fault test, multi-process test may be better than multi-thread
+test because it has noise of shared objects/status.
+
+But the above two are testing extreme situations.
+Trying usual test under memory controller is always helpful.
 
 4.1 Troubleshooting
 
 Sometimes a user might find that the application under a cgroup is
-terminated. There are several causes for this:
+terminated by OOM killer. There are several causes for this:
 
 1. The cgroup limit is too low (just too low to do anything useful)
 2. The user is using anonymous memory and swap is turned off or too low
@@ -261,6 +327,9 @@
 A sync followed by echo 1 > /proc/sys/vm/drop_caches will help get rid of
 some of the pages cached in the cgroup (page cache pages).
 
+To know what happens, disable OOM_Kill by 10. OOM Control(see below) and
+seeing what happens will be helpful.
+
 4.2 Task migration
 
 When a task migrates from one cgroup to another, its charge is not
@@ -268,16 +337,19 @@
 remain charged to it, the charge is dropped when the page is freed or
 reclaimed.
 
-Note: You can move charges of a task along with task migration. See 8.
+You can move charges of a task along with task migration.
+See 8. "Move charges at task migration"
 
 4.3 Removing a cgroup
 
 A cgroup can be removed by rmdir, but as discussed in sections 4.1 and 4.2, a
 cgroup might have some charge associated with it, even though all
-tasks have migrated away from it.
-Such charges are freed(at default) or moved to its parent. When moved,
-both of RSS and CACHES are moved to parent.
-If both of them are busy, rmdir() returns -EBUSY. See 5.1 Also.
+tasks have migrated away from it. (because we charge against pages, not
+against tasks.)
+
+Such charges are freed or moved to their parent. At moving, both of RSS
+and CACHES are moved to parent.
+rmdir() may return -EBUSY if freeing/moving fails. See 5.1 also.
 
 Charges recorded in swap information is not updated at removal of cgroup.
 Recorded information is discarded and a cgroup which uses swap (swapcache)
@@ -293,10 +365,10 @@
 
   # echo 0 > memory.force_empty
 
-  Almost all pages tracked by this memcg will be unmapped and freed. Some of
-  pages cannot be freed because it's locked or in-use. Such pages are moved
-  to parent and this cgroup will be empty. But this may return -EBUSY in
-  some too busy case.
+  Almost all pages tracked by this memory cgroup will be unmapped and freed.
+  Some pages cannot be freed because they are locked or in-use. Such pages are
+  moved to parent and this cgroup will be empty. This may return -EBUSY if
+  VM is too busy to free/move all pages immediately.
 
   Typical use case of this interface is that calling this before rmdir().
   Because rmdir() moves all pages to parent, some out-of-use page caches can be
@@ -306,19 +378,41 @@
 
 memory.stat file includes following statistics
 
+# per-memory cgroup local status
 cache		- # of bytes of page cache memory.
 rss		- # of bytes of anonymous and swap cache memory.
+mapped_file	- # of bytes of mapped file (includes tmpfs/shmem)
 pgpgin		- # of pages paged in (equivalent to # of charging events).
 pgpgout		- # of pages paged out (equivalent to # of uncharging events).
-active_anon	- # of bytes of anonymous and  swap cache memory on active
-		  lru list.
+swap		- # of bytes of swap usage
 inactive_anon	- # of bytes of anonymous memory and swap cache memory on
-		  inactive lru list.
-active_file	- # of bytes of file-backed memory on active lru list.
-inactive_file	- # of bytes of file-backed memory on inactive lru list.
+		LRU list.
+active_anon	- # of bytes of anonymous and swap cache memory on active
+		inactive LRU list.
+inactive_file	- # of bytes of file-backed memory on inactive LRU list.
+active_file	- # of bytes of file-backed memory on active LRU list.
 unevictable	- # of bytes of memory that cannot be reclaimed (mlocked etc).
 
-The following additional stats are dependent on CONFIG_DEBUG_VM.
+# status considering hierarchy (see memory.use_hierarchy settings)
+
+hierarchical_memory_limit - # of bytes of memory limit with regard to hierarchy
+			under which the memory cgroup is
+hierarchical_memsw_limit - # of bytes of memory+swap limit with regard to
+			hierarchy under which memory cgroup is.
+
+total_cache		- sum of all children's "cache"
+total_rss		- sum of all children's "rss"
+total_mapped_file	- sum of all children's "cache"
+total_pgpgin		- sum of all children's "pgpgin"
+total_pgpgout		- sum of all children's "pgpgout"
+total_swap		- sum of all children's "swap"
+total_inactive_anon	- sum of all children's "inactive_anon"
+total_active_anon	- sum of all children's "active_anon"
+total_inactive_file	- sum of all children's "inactive_file"
+total_active_file	- sum of all children's "active_file"
+total_unevictable	- sum of all children's "unevictable"
+
+# The following additional stats are dependent on CONFIG_DEBUG_VM.
 
 inactive_ratio		- VM internal parameter. (see mm/page_alloc.c)
 recent_rotated_anon	- VM internal parameter. (see mm/vmscan.c)
@@ -327,24 +421,37 @@
 recent_scanned_file	- VM internal parameter. (see mm/vmscan.c)
 
 Memo:
-	recent_rotated means recent frequency of lru rotation.
-	recent_scanned means recent # of scans to lru.
+	recent_rotated means recent frequency of LRU rotation.
+	recent_scanned means recent # of scans to LRU.
 	showing for better debug please see the code for meanings.
 
 Note:
 	Only anonymous and swap cache memory is listed as part of 'rss' stat.
 	This should not be confused with the true 'resident set size' or the
-	amount of physical memory used by the cgroup. Per-cgroup rss
-	accounting is not done yet.
+	amount of physical memory used by the cgroup.
+	'rss + file_mapped" will give you resident set size of cgroup.
+	(Note: file and shmem may be shared among other cgroups. In that case,
+	 file_mapped is accounted only when the memory cgroup is owner of page
+	 cache.)
 
 5.3 swappiness
-  Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only.
 
-  Following cgroups' swappiness can't be changed.
-  - root cgroup (uses /proc/sys/vm/swappiness).
-  - a cgroup which uses hierarchy and it has child cgroup.
-  - a cgroup which uses hierarchy and not the root of hierarchy.
+Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only.
 
+Following cgroups' swappiness can't be changed.
+- root cgroup (uses /proc/sys/vm/swappiness).
+- a cgroup which uses hierarchy and it has other cgroup(s) below it.
+- a cgroup which uses hierarchy and not the root of hierarchy.
+
+5.4 failcnt
+
+A memory cgroup provides memory.failcnt and memory.memsw.failcnt files.
+This failcnt(== failure count) shows the number of times that a usage counter
+hit its limit. When a memory cgroup hits a limit, failcnt increases and
+memory under it will be reclaimed.
+
+You can reset failcnt by writing 0 to failcnt file.
+# echo 0 > .../memory.failcnt
 
 6. Hierarchy support
 
@@ -363,13 +470,13 @@
 
 In the diagram above, with hierarchical accounting enabled, all memory
 usage of e, is accounted to its ancestors up until the root (i.e, c and root),
-that has memory.use_hierarchy enabled.  If one of the ancestors goes over its
+that has memory.use_hierarchy enabled. If one of the ancestors goes over its
 limit, the reclaim algorithm reclaims from the tasks in the ancestor and the
 children of the ancestor.
 
 6.1 Enabling hierarchical accounting and reclaim
 
-The memory controller by default disables the hierarchy feature. Support
+A memory cgroup by default disables the hierarchy feature. Support
 can be enabled by writing 1 to memory.use_hierarchy file of the root cgroup
 
 # echo 1 > memory.use_hierarchy
@@ -379,10 +486,10 @@
 # echo 0 > memory.use_hierarchy
 
 NOTE1: Enabling/disabling will fail if the cgroup already has other
-cgroups created below it.
+       cgroups created below it.
 
 NOTE2: When panic_on_oom is set to "2", the whole system will panic in
-case of an oom event in any cgroup.
+       case of an OOM event in any cgroup.
 
 7. Soft limits
 
@@ -392,7 +499,7 @@
 a. There is no memory contention
 b. They do not exceed their hard limit
 
-When the system detects memory contention or low memory control groups
+When the system detects memory contention or low memory, control groups
 are pushed back to their soft limits. If the soft limit of each control
 group is very high, they are pushed back as much as possible to make
 sure that one control group does not starve the others of memory.
@@ -406,7 +513,7 @@
 7.1 Interface
 
 Soft limits can be setup by using the following commands (in this example we
-assume a soft limit of 256 megabytes)
+assume a soft limit of 256 MiB)
 
 # echo 256M > memory.soft_limit_in_bytes
 
@@ -442,7 +549,7 @@
 Note: If we cannot find enough space for the task in the destination cgroup, we
       try to make space by reclaiming memory. Task migration may fail if we
       cannot make enough space.
-Note: It can take several seconds if you move charges in giga bytes order.
+Note: It can take several seconds if you move charges much.
 
 And if you want disable it again:
 
@@ -451,21 +558,27 @@
 8.2 Type of charges which can be move
 
 Each bits of move_charge_at_immigrate has its own meaning about what type of
-charges should be moved.
+charges should be moved. But in any cases, it must be noted that an account of
+a page or a swap can be moved only when it is charged to the task's current(old)
+memory cgroup.
 
   bit | what type of charges would be moved ?
  -----+------------------------------------------------------------------------
    0  | A charge of an anonymous page(or swap of it) used by the target task.
       | Those pages and swaps must be used only by the target task. You must
       | enable Swap Extension(see 2.4) to enable move of swap charges.
-
-Note: Those pages and swaps must be charged to the old cgroup.
-Note: More type of pages(e.g. file cache, shmem,) will be supported by other
-      bits in future.
+ -----+------------------------------------------------------------------------
+   1  | A charge of file pages(normal file, tmpfs file(e.g. ipc shared memory)
+      | and swaps of tmpfs file) mmapped by the target task. Unlike the case of
+      | anonymous pages, file pages(and swaps) in the range mmapped by the task
+      | will be moved even if the task hasn't done page fault, i.e. they might
+      | not be the task's "RSS", but other task's "RSS" that maps the same file.
+      | And mapcount of the page is ignored(the page can be moved even if
+      | page_mapcount(page) > 1). You must enable Swap Extension(see 2.4) to
+      | enable move of swap charges.
 
 8.3 TODO
 
-- Add support for other types of pages(e.g. file cache, shmem, etc.).
 - Implement madvise(2) to let users decide the vma to be moved or not to be
   moved.
 - All of moving charge operations are done under cgroup_mutex. It's not good
@@ -473,22 +586,61 @@
 
 9. Memory thresholds
 
-Memory controler implements memory thresholds using cgroups notification
+Memory cgroup implements memory thresholds using cgroups notification
 API (see cgroups.txt). It allows to register multiple memory and memsw
 thresholds and gets notifications when it crosses.
 
 To register a threshold application need:
- - create an eventfd using eventfd(2);
- - open memory.usage_in_bytes or memory.memsw.usage_in_bytes;
- - write string like "<event_fd> <memory.usage_in_bytes> <threshold>" to
-   cgroup.event_control.
+- create an eventfd using eventfd(2);
+- open memory.usage_in_bytes or memory.memsw.usage_in_bytes;
+- write string like "<event_fd> <fd of memory.usage_in_bytes> <threshold>" to
+  cgroup.event_control.
 
 Application will be notified through eventfd when memory usage crosses
 threshold in any direction.
 
 It's applicable for root and non-root cgroup.
 
-10. TODO
+10. OOM Control
+
+memory.oom_control file is for OOM notification and other controls.
+
+Memory cgroup implements OOM notifier using cgroup notification
+API (See cgroups.txt). It allows to register multiple OOM notification
+delivery and gets notification when OOM happens.
+
+To register a notifier, application need:
+ - create an eventfd using eventfd(2)
+ - open memory.oom_control file
+ - write string like "<event_fd> <fd of memory.oom_control>" to
+   cgroup.event_control
+
+Application will be notified through eventfd when OOM happens.
+OOM notification doesn't work for root cgroup.
+
+You can disable OOM-killer by writing "1" to memory.oom_control file, as:
+
+	#echo 1 > memory.oom_control
+
+This operation is only allowed to the top cgroup of sub-hierarchy.
+If OOM-killer is disabled, tasks under cgroup will hang/sleep
+in memory cgroup's OOM-waitqueue when they request accountable memory.
+
+For running them, you have to relax the memory cgroup's OOM status by
+	* enlarge limit or reduce usage.
+To reduce usage,
+	* kill some tasks.
+	* move some tasks to other group with account migration.
+	* remove some files (on tmpfs?)
+
+Then, stopped tasks will work again.
+
+At reading, current status of OOM is shown.
+	oom_kill_disable 0 or 1 (if 1, oom-killer is disabled)
+	under_oom	 0 or 1 (if 1, the memory cgroup is under OOM, tasks may
+				 be stopped.)
+
+11. TODO
 
 1. Add support for accounting huge pages (as a separate controller)
 2. Make per-cgroup scanner reclaim not-shared pages first
diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index 53d64d3..1d83d12 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -443,6 +443,8 @@
 		231 = /dev/snapshot	System memory snapshot device
 		232 = /dev/kvm		Kernel-based virtual machine (hardware virtualization extensions)
 		233 = /dev/kmview	View-OS A process with a view
+		234 = /dev/btrfs-control	Btrfs control device
+		235 = /dev/autofs	Autofs control device
 		240-254			Reserved for local use
 		255			Reserved for MISC_DYNAMIC_MINOR
 
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index a86152a..672be01 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -646,3 +646,13 @@
 
 ----------------------------
 
+What:	old ieee1394 subsystem (CONFIG_IEEE1394)
+When:	2.6.37
+Files:	drivers/ieee1394/ except init_ohci1394_dma.c
+Why:	superseded by drivers/firewire/ (CONFIG_FIREWIRE) which offers more
+	features, better performance, and better security, all with smaller
+	and more modern code base
+Who:	Stefan Richter <stefanr@s5r6.in-berlin.de>
+
+----------------------------
+
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index af16080..96d4293 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -380,7 +380,7 @@
 	int (*open) (struct inode *, struct file *);
 	int (*flush) (struct file *);
 	int (*release) (struct inode *, struct file *);
-	int (*fsync) (struct file *, struct dentry *, int datasync);
+	int (*fsync) (struct file *, int datasync);
 	int (*aio_fsync) (struct kiocb *, int datasync);
 	int (*fasync) (int, struct file *, int);
 	int (*lock) (struct file *, int, struct file_lock *);
@@ -429,8 +429,9 @@
 implementations.  If your fs is not using generic_file_llseek, you
 need to acquire and release the appropriate locks in your ->llseek().
 For many filesystems, it is probably safe to acquire the inode
-mutex.  Note some filesystems (i.e. remote ones) provide no
-protection for i_size so you will need to use the BKL.
+mutex or just to use i_size_read() instead.
+Note: this does not protect the file->f_pos against concurrent modifications
+since this is something the userspace has to take care about.
 
 Note: ext2_release() was *the* source of contention on fs-intensive
 loads and dropping BKL on ->release() helps to get rid of that (we still
diff --git a/Documentation/filesystems/squashfs.txt b/Documentation/filesystems/squashfs.txt
index b324c03..203f720 100644
--- a/Documentation/filesystems/squashfs.txt
+++ b/Documentation/filesystems/squashfs.txt
@@ -38,7 +38,8 @@
 Real inode numbers:		yes			no
 32-bit uids/gids:		yes			no
 File creation time:		yes			no
-Xattr and ACL support:		no			no
+Xattr support:			yes			no
+ACL support:			no			no
 
 Squashfs compresses data, inodes and directories.  In addition, inode and
 directory data are highly compacted, and packed on byte boundaries.  Each
@@ -58,7 +59,7 @@
 3. SQUASHFS FILESYSTEM DESIGN
 -----------------------------
 
-A squashfs filesystem consists of seven parts, packed together on a byte
+A squashfs filesystem consists of a maximum of eight parts, packed together on a byte
 alignment:
 
 	 ---------------
@@ -80,6 +81,9 @@
 	|---------------|
 	|    uid/gid	|
 	|  lookup table	|
+	|---------------|
+	|     xattr     |
+	|     table	|
 	 ---------------
 
 Compressed data blocks are written to the filesystem as files are read from
@@ -192,6 +196,26 @@
 used to locate these.  This second index table for speed of access (and because
 it is small) is read at mount time and cached in memory.
 
+3.7 Xattr table
+---------------
+
+The xattr table contains extended attributes for each inode.  The xattrs
+for each inode are stored in a list, each list entry containing a type,
+name and value field.  The type field encodes the xattr prefix
+("user.", "trusted." etc) and it also encodes how the name/value fields
+should be interpreted.  Currently the type indicates whether the value
+is stored inline (in which case the value field contains the xattr value),
+or if it is stored out of line (in which case the value field stores a
+reference to where the actual value is stored).  This allows large values
+to be stored out of line improving scanning and lookup performance and it
+also allows values to be de-duplicated, the value being stored once, and
+all other occurences holding an out of line reference to that value.
+
+The xattr lists are packed into compressed 8K metadata blocks.
+To reduce overhead in inodes, rather than storing the on-disk
+location of the xattr list inside each inode, a 32-bit xattr id
+is stored.  This xattr id is mapped into the location of the xattr
+list using a second xattr id lookup table.
 
 4. TODOS AND OUTSTANDING ISSUES
 -------------------------------
@@ -199,9 +223,7 @@
 4.1 Todo list
 -------------
 
-Implement Xattr and ACL support.  The Squashfs 4.0 filesystem layout has hooks
-for these but the code has not been written.  Once the code has been written
-the existing layout should not require modification.
+Implement ACL support.
 
 4.2 Squashfs internal cache
 ---------------------------
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index b668585..94677e7 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -401,11 +401,16 @@
   	started might not be in the page cache at the end of the
   	walk).
 
-  truncate: called by the VFS to change the size of a file.  The
+  truncate: Deprecated. This will not be called if ->setsize is defined.
+	Called by the VFS to change the size of a file.  The
  	i_size field of the inode is set to the desired size by the
  	VFS before this method is called.  This method is called by
  	the truncate(2) system call and related functionality.
 
+	Note: ->truncate and vmtruncate are deprecated. Do not add new
+	instances/calls of these. Filesystems should be converted to do their
+	truncate sequence via ->setattr().
+
   permission: called by the VFS to check for access rights on a POSIX-like
   	filesystem.
 
@@ -729,7 +734,7 @@
 	int (*open) (struct inode *, struct file *);
 	int (*flush) (struct file *);
 	int (*release) (struct inode *, struct file *);
-	int (*fsync) (struct file *, struct dentry *, int datasync);
+	int (*fsync) (struct file *, int datasync);
 	int (*aio_fsync) (struct kiocb *, int datasync);
 	int (*fasync) (int, struct file *, int);
 	int (*lock) (struct file *, int, struct file_lock *);
diff --git a/Documentation/hwmon/dme1737 b/Documentation/hwmon/dme1737
index 001d2e7..fc5df76 100644
--- a/Documentation/hwmon/dme1737
+++ b/Documentation/hwmon/dme1737
@@ -9,11 +9,15 @@
   * SMSC SCH3112, SCH3114, SCH3116
     Prefix: 'sch311x'
     Addresses scanned: none, address read from Super-I/O config space
-    Datasheet: http://www.nuhorizons.com/FeaturedProducts/Volume1/SMSC/311x.pdf
+    Datasheet: Available on the Internet
   * SMSC SCH5027
     Prefix: 'sch5027'
     Addresses scanned: I2C 0x2c, 0x2d, 0x2e
     Datasheet: Provided by SMSC upon request and under NDA
+  * SMSC SCH5127
+    Prefix: 'sch5127'
+    Addresses scanned: none, address read from Super-I/O config space
+    Datasheet: Provided by SMSC upon request and under NDA
 
 Authors:
     Juerg Haefliger <juergh@gmail.com>
@@ -36,8 +40,8 @@
 -----------
 
 This driver implements support for the hardware monitoring capabilities of the
-SMSC DME1737 and Asus A8000 (which are the same), SMSC SCH5027, and SMSC
-SCH311x Super-I/O chips. These chips feature monitoring of 3 temp sensors
+SMSC DME1737 and Asus A8000 (which are the same), SMSC SCH5027, SCH311x,
+and SCH5127 Super-I/O chips. These chips feature monitoring of 3 temp sensors
 temp[1-3] (2 remote diodes and 1 internal), 7 voltages in[0-6] (6 external and
 1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement
 up to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and
@@ -48,14 +52,14 @@
 the configuration of the chip. The driver will detect which features are
 present during initialization and create the sysfs attributes accordingly.
 
-For the SCH311x, fan[1-3] and pwm[1-3] are always present and fan[4-6] and
-pwm[5-6] don't exist.
+For the SCH311x and SCH5127, fan[1-3] and pwm[1-3] are always present and
+fan[4-6] and pwm[5-6] don't exist.
 
 The hardware monitoring features of the DME1737, A8000, and SCH5027 are only
-accessible via SMBus, while the SCH311x only provides access via the ISA bus.
-The driver will therefore register itself as an I2C client driver if it detects
-a DME1737, A8000, or SCH5027 and as a platform driver if it detects a SCH311x
-chip.
+accessible via SMBus, while the SCH311x and SCH5127 only provide access via
+the ISA bus. The driver will therefore register itself as an I2C client driver
+if it detects a DME1737, A8000, or SCH5027 and as a platform driver if it
+detects a SCH311x or SCH5127 chip.
 
 
 Voltage Monitoring
@@ -76,7 +80,7 @@
 	in6: Vbat	(+3.0V)			0V - 4.38V
 
 SCH311x:
-	in0: +2.5V				0V - 6.64V
+	in0: +2.5V				0V - 3.32V
 	in1: Vccp	(processor core)	0V - 2V
 	in2: VCC	(internal +3.3V)	0V - 4.38V
 	in3: +5V				0V - 6.64V
@@ -93,6 +97,15 @@
 	in5: VTR	(+3.3V standby)		0V - 4.38V
 	in6: Vbat	(+3.0V)			0V - 4.38V
 
+SCH5127:
+	in0: +2.5				0V - 3.32V
+	in1: Vccp	(processor core)	0V - 3V
+	in2: VCC	(internal +3.3V)	0V - 4.38V
+	in3: V2_IN				0V - 1.5V
+	in4: V1_IN				0V - 1.5V
+	in5: VTR	(+3.3V standby)		0V - 4.38V
+	in6: Vbat	(+3.0V)			0V - 4.38V
+
 Each voltage input has associated min and max limits which trigger an alarm
 when crossed.
 
@@ -293,3 +306,21 @@
 pwm[1-3]_auto_point2_pwm	RO	Auto PWM pwm point. Auto_point2 is the
 					full-speed duty-cycle which is hard-
 					wired to 255 (100% duty-cycle).
+
+Chip Differences
+----------------
+
+Feature			dme1737	sch311x	sch5027	sch5127
+-------------------------------------------------------
+temp[1-3]_offset	yes	yes
+vid			yes
+zone3			yes	yes	yes
+zone[1-3]_hyst		yes	yes
+pwm min/off		yes	yes
+fan3			opt	yes	opt	yes
+pwm3			opt	yes	opt	yes
+fan4			opt		opt
+fan5			opt		opt
+pwm5			opt		opt
+fan6			opt		opt
+pwm6			opt		opt
diff --git a/Documentation/hwmon/lm63 b/Documentation/hwmon/lm63
index 31660bf..b9843ea 100644
--- a/Documentation/hwmon/lm63
+++ b/Documentation/hwmon/lm63
@@ -7,6 +7,11 @@
     Addresses scanned: I2C 0x4c
     Datasheet: Publicly available at the National Semiconductor website
                http://www.national.com/pf/LM/LM63.html
+  * National Semiconductor LM64
+    Prefix: 'lm64'
+    Addresses scanned: I2C 0x18 and 0x4e
+    Datasheet: Publicly available at the National Semiconductor website
+               http://www.national.com/pf/LM/LM64.html
 
 Author: Jean Delvare <khali@linux-fr.org>
 
@@ -55,3 +60,5 @@
 second; reading them more often will do no harm, but will return 'old'
 values.
 
+The LM64 is effectively an LM63 with GPIO lines. The driver does not
+support these GPIO lines at present.
diff --git a/Documentation/hwmon/ltc4245 b/Documentation/hwmon/ltc4245
index 02838a4..86b5880 100644
--- a/Documentation/hwmon/ltc4245
+++ b/Documentation/hwmon/ltc4245
@@ -72,9 +72,7 @@
 in7_min_alarm		3v  output undervoltage alarm
 in8_min_alarm		Vee (-12v) output undervoltage alarm
 
-in9_input		GPIO #1 voltage data
-in10_input		GPIO #2 voltage data
-in11_input		GPIO #3 voltage data
+in9_input		GPIO voltage data
 
 power1_input		12v power usage (mW)
 power2_input		5v  power usage (mW)
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 3de6b0b..d4e2917 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -80,9 +80,9 @@
 given driver if the chip has the feature.
 
 
-********
-* Name *
-********
+*********************
+* Global attributes *
+*********************
 
 name		The chip name.
 		This should be a short, lowercase string, not containing
@@ -91,6 +91,13 @@
 		I2C devices get this attribute created automatically.
 		RO
 
+update_rate	The rate at which the chip will update readings.
+		Unit: millisecond
+		RW
+		Some devices have a variable update rate. This attribute
+		can be used to change the update rate to the desired
+		frequency.
+
 
 ************
 * Voltages *
diff --git a/Documentation/hwmon/tmp102 b/Documentation/hwmon/tmp102
new file mode 100644
index 0000000..8454a77
--- /dev/null
+++ b/Documentation/hwmon/tmp102
@@ -0,0 +1,26 @@
+Kernel driver tmp102
+====================
+
+Supported chips:
+  * Texas Instruments TMP102
+    Prefix: 'tmp102'
+    Addresses scanned: none
+    Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp102.html
+
+Author:
+	Steven King <sfking@fdwdc.com>
+
+Description
+-----------
+
+The Texas Instruments TMP102 implements one temperature sensor.  Limits can be
+set through the Overtemperature Shutdown register and Hysteresis register.  The
+sensor is accurate to 0.5 degree over the range of -25 to +85 C, and to 1.0
+degree from -40 to +125 C. Resolution of the sensor is 0.0625 degree.  The
+operating temperature has a minimum of -55 C and a maximum of +150 C.
+
+The TMP102 has a programmable update rate that can select between 8, 4, 1, and
+0.5 Hz. (Currently the driver only supports the default of 4 Hz).
+
+The driver provides the common sysfs-interface for temperatures (see
+Documentation/hwmon/sysfs-interface under Temperatures).
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b56ea86..1808f11 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -145,11 +145,10 @@
 
 	acpi=		[HW,ACPI,X86]
 			Advanced Configuration and Power Interface
-			Format: { force | off | ht | strict | noirq | rsdt }
+			Format: { force | off | strict | noirq | rsdt }
 			force -- enable ACPI if default was off
 			off -- disable ACPI if default was on
 			noirq -- do not use ACPI for IRQ routing
-			ht -- run only enough ACPI to enable Hyper Threading
 			strict -- Be less tolerant of platforms that are not
 				strictly ACPI specification compliant.
 			rsdt -- prefer RSDT over (default) XSDT
@@ -758,6 +757,10 @@
 			Default value is 0.
 			Value can be changed at runtime via /selinux/enforce.
 
+	erst_disable	[ACPI]
+			Disable Error Record Serialization Table (ERST)
+			support.
+
 	ether=		[HW,NET] Ethernet cards parameters
 			This option is obsoleted by the "netdev=" option, which
 			has equivalent usage. See its documentation for details.
@@ -852,6 +855,11 @@
 	hd=		[EIDE] (E)IDE hard drive subsystem geometry
 			Format: <cyl>,<head>,<sect>
 
+	hest_disable	[ACPI]
+			Disable Hardware Error Source Table (HEST) support;
+			corresponding firmware-first mode error processing
+			logic will be disabled.
+
 	highmem=nn[KMG]	[KNL,BOOT] forces the highmem zone to have an exact
 			size of <nn>. This works even on boxes that have no
 			highmem otherwise. This also works to reduce highmem
@@ -1252,6 +1260,8 @@
 			* nohrst, nosrst, norst: suppress hard, soft
                           and both resets.
 
+			* dump_id: dump IDENTIFY data.
+
 			If there are multiple matching configurations changing
 			the same attribute, the last one is used.
 
diff --git a/Documentation/vm/numa b/Documentation/vm/numa
index e93ad94..a200a38 100644
--- a/Documentation/vm/numa
+++ b/Documentation/vm/numa
@@ -1,41 +1,149 @@
 Started Nov 1999 by Kanoj Sarcar <kanoj@sgi.com>
 
-The intent of this file is to have an uptodate, running commentary 
-from different people about NUMA specific code in the Linux vm.
+What is NUMA?
 
-What is NUMA? It is an architecture where the memory access times
-for different regions of memory from a given processor varies
-according to the "distance" of the memory region from the processor.
-Each region of memory to which access times are the same from any 
-cpu, is called a node. On such architectures, it is beneficial if
-the kernel tries to minimize inter node communications. Schemes
-for this range from kernel text and read-only data replication
-across nodes, and trying to house all the data structures that
-key components of the kernel need on memory on that node.
+This question can be answered from a couple of perspectives:  the
+hardware view and the Linux software view.
 
-Currently, all the numa support is to provide efficient handling
-of widely discontiguous physical memory, so architectures which 
-are not NUMA but can have huge holes in the physical address space
-can use the same code. All this code is bracketed by CONFIG_DISCONTIGMEM.
+From the hardware perspective, a NUMA system is a computer platform that
+comprises multiple components or assemblies each of which may contain 0
+or more CPUs, local memory, and/or IO buses.  For brevity and to
+disambiguate the hardware view of these physical components/assemblies
+from the software abstraction thereof, we'll call the components/assemblies
+'cells' in this document.
 
-The initial port includes NUMAizing the bootmem allocator code by
-encapsulating all the pieces of information into a bootmem_data_t
-structure. Node specific calls have been added to the allocator. 
-In theory, any platform which uses the bootmem allocator should 
-be able to put the bootmem and mem_map data structures anywhere
-it deems best.
+Each of the 'cells' may be viewed as an SMP [symmetric multi-processor] subset
+of the system--although some components necessary for a stand-alone SMP system
+may not be populated on any given cell.   The cells of the NUMA system are
+connected together with some sort of system interconnect--e.g., a crossbar or
+point-to-point link are common types of NUMA system interconnects.  Both of
+these types of interconnects can be aggregated to create NUMA platforms with
+cells at multiple distances from other cells.
 
-Each node's page allocation data structures have also been encapsulated
-into a pg_data_t. The bootmem_data_t is just one part of this. To 
-make the code look uniform between NUMA and regular UMA platforms, 
-UMA platforms have a statically allocated pg_data_t too (contig_page_data).
-For the sake of uniformity, the function num_online_nodes() is also defined
-for all platforms. As we run benchmarks, we might decide to NUMAize 
-more variables like low_on_memory, nr_free_pages etc into the pg_data_t.
+For Linux, the NUMA platforms of interest are primarily what is known as Cache
+Coherent NUMA or ccNUMA systems.   With ccNUMA systems, all memory is visible
+to and accessible from any CPU attached to any cell and cache coherency
+is handled in hardware by the processor caches and/or the system interconnect.
 
-The NUMA aware page allocation code currently tries to allocate pages 
-from different nodes in a round robin manner.  This will be changed to 
-do concentratic circle search, starting from current node, once the 
-NUMA port achieves more maturity. The call alloc_pages_node has been 
-added, so that drivers can make the call and not worry about whether 
-it is running on a NUMA or UMA platform.
+Memory access time and effective memory bandwidth varies depending on how far
+away the cell containing the CPU or IO bus making the memory access is from the
+cell containing the target memory.  For example, access to memory by CPUs
+attached to the same cell will experience faster access times and higher
+bandwidths than accesses to memory on other, remote cells.  NUMA platforms
+can have cells at multiple remote distances from any given cell.
+
+Platform vendors don't build NUMA systems just to make software developers'
+lives interesting.  Rather, this architecture is a means to provide scalable
+memory bandwidth.  However, to achieve scalable memory bandwidth, system and
+application software must arrange for a large majority of the memory references
+[cache misses] to be to "local" memory--memory on the same cell, if any--or
+to the closest cell with memory.
+
+This leads to the Linux software view of a NUMA system:
+
+Linux divides the system's hardware resources into multiple software
+abstractions called "nodes".  Linux maps the nodes onto the physical cells
+of the hardware platform, abstracting away some of the details for some
+architectures.  As with physical cells, software nodes may contain 0 or more
+CPUs, memory and/or IO buses.  And, again, memory accesses to memory on
+"closer" nodes--nodes that map to closer cells--will generally experience
+faster access times and higher effective bandwidth than accesses to more
+remote cells.
+
+For some architectures, such as x86, Linux will "hide" any node representing a
+physical cell that has no memory attached, and reassign any CPUs attached to
+that cell to a node representing a cell that does have memory.  Thus, on
+these architectures, one cannot assume that all CPUs that Linux associates with
+a given node will see the same local memory access times and bandwidth.
+
+In addition, for some architectures, again x86 is an example, Linux supports
+the emulation of additional nodes.  For NUMA emulation, linux will carve up
+the existing nodes--or the system memory for non-NUMA platforms--into multiple
+nodes.  Each emulated node will manage a fraction of the underlying cells'
+physical memory.  NUMA emluation is useful for testing NUMA kernel and
+application features on non-NUMA platforms, and as a sort of memory resource
+management mechanism when used together with cpusets.
+[see Documentation/cgroups/cpusets.txt]
+
+For each node with memory, Linux constructs an independent memory management
+subsystem, complete with its own free page lists, in-use page lists, usage
+statistics and locks to mediate access.  In addition, Linux constructs for
+each memory zone [one or more of DMA, DMA32, NORMAL, HIGH_MEMORY, MOVABLE],
+an ordered "zonelist".  A zonelist specifies the zones/nodes to visit when a
+selected zone/node cannot satisfy the allocation request.  This situation,
+when a zone has no available memory to satisfy a request, is called
+"overflow" or "fallback".
+
+Because some nodes contain multiple zones containing different types of
+memory, Linux must decide whether to order the zonelists such that allocations
+fall back to the same zone type on a different node, or to a different zone
+type on the same node.  This is an important consideration because some zones,
+such as DMA or DMA32, represent relatively scarce resources.  Linux chooses
+a default zonelist order based on the sizes of the various zone types relative
+to the total memory of the node and the total memory of the system.  The
+default zonelist order may be overridden using the numa_zonelist_order kernel
+boot parameter or sysctl.  [see Documentation/kernel-parameters.txt and
+Documentation/sysctl/vm.txt]
+
+By default, Linux will attempt to satisfy memory allocation requests from the
+node to which the CPU that executes the request is assigned.  Specifically,
+Linux will attempt to allocate from the first node in the appropriate zonelist
+for the node where the request originates.  This is called "local allocation."
+If the "local" node cannot satisfy the request, the kernel will examine other
+nodes' zones in the selected zonelist looking for the first zone in the list
+that can satisfy the request.
+
+Local allocation will tend to keep subsequent access to the allocated memory
+"local" to the underlying physical resources and off the system interconnect--
+as long as the task on whose behalf the kernel allocated some memory does not
+later migrate away from that memory.  The Linux scheduler is aware of the
+NUMA topology of the platform--embodied in the "scheduling domains" data
+structures [see Documentation/scheduler/sched-domains.txt]--and the scheduler
+attempts to minimize task migration to distant scheduling domains.  However,
+the scheduler does not take a task's NUMA footprint into account directly.
+Thus, under sufficient imbalance, tasks can migrate between nodes, remote
+from their initial node and kernel data structures.
+
+System administrators and application designers can restrict a task's migration
+to improve NUMA locality using various CPU affinity command line interfaces,
+such as taskset(1) and numactl(1), and program interfaces such as
+sched_setaffinity(2).  Further, one can modify the kernel's default local
+allocation behavior using Linux NUMA memory policy.
+[see Documentation/vm/numa_memory_policy.]
+
+System administrators can restrict the CPUs and nodes' memories that a non-
+privileged user can specify in the scheduling or NUMA commands and functions
+using control groups and CPUsets.  [see Documentation/cgroups/CPUsets.txt]
+
+On architectures that do not hide memoryless nodes, Linux will include only
+zones [nodes] with memory in the zonelists.  This means that for a memoryless
+node the "local memory node"--the node of the first zone in CPU's node's
+zonelist--will not be the node itself.  Rather, it will be the node that the
+kernel selected as the nearest node with memory when it built the zonelists.
+So, default, local allocations will succeed with the kernel supplying the
+closest available memory.  This is a consequence of the same mechanism that
+allows such allocations to fallback to other nearby nodes when a node that
+does contain memory overflows.
+
+Some kernel allocations do not want or cannot tolerate this allocation fallback
+behavior.  Rather they want to be sure they get memory from the specified node
+or get notified that the node has no free memory.  This is usually the case when
+a subsystem allocates per CPU memory resources, for example.
+
+A typical model for making such an allocation is to obtain the node id of the
+node to which the "current CPU" is attached using one of the kernel's
+numa_node_id() or CPU_to_node() functions and then request memory from only
+the node id returned.  When such an allocation fails, the requesting subsystem
+may revert to its own fallback path.  The slab kernel memory allocator is an
+example of this.  Or, the subsystem may choose to disable or not to enable
+itself on allocation failure.  The kernel profiling subsystem is an example of
+this.
+
+If the architecture supports--does not hide--memoryless nodes, then CPUs
+attached to memoryless nodes would always incur the fallback path overhead
+or some subsystems would fail to initialize if they attempted to allocated
+memory exclusively from a node without memory.  To support such
+architectures transparently, kernel subsystems can use the numa_mem_id()
+or cpu_to_mem() function to locate the "local memory node" for the calling or
+specified CPU.  Again, this is the same node from which default, local page
+allocations will be attempted.
diff --git a/MAINTAINERS b/MAINTAINERS
index a8fe9b4..13608bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -969,6 +969,18 @@
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 W:	http://www.mcuos.com
 S:	Maintained
+F:	arch/arm/mach-w90x900/
+F:	arch/arm/mach-nuc93x/
+F:	drivers/input/keyboard/w90p910_keypad.c
+F:	drivers/input/touchscreen/w90p910_ts.c
+F:	drivers/watchdog/nuc900_wdt.c
+F:	drivers/net/arm/w90p910_ether.c
+F:	drivers/mtd/nand/w90p910_nand.c
+F:	drivers/rtc/rtc-nuc900.c
+F:	drivers/spi/spi_nuc900.c
+F:	drivers/usb/host/ehci-w90x900.c
+F:	drivers/video/nuc900fb.c
+F:	drivers/sound/soc/nuc900/
 
 ARM/U300 MACHINE SUPPORT
 M:	Linus Walleij <linus.walleij@stericsson.com>
@@ -2875,6 +2887,13 @@
 S:	Maintained
 F:	drivers/input/
 
+INTEL IDLE DRIVER
+M:	Len Brown <lenb@kernel.org>
+L:	linux-pm@lists.linux-foundation.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6.git
+S:	Supported
+F:	drivers/idle/intel_idle.c
+
 INTEL FRAMEBUFFER DRIVER (excluding 810 and 815)
 M:	Maik Broemme <mbroemme@plusserver.de>
 L:	linux-fbdev@vger.kernel.org
@@ -4824,6 +4843,9 @@
 S:	Supported
 F:	arch/s390/
 F:	drivers/s390/
+F:	fs/partitions/ibm.c
+F:	Documentation/s390/
+F:	Documentation/DocBook/s390*
 
 S390 NETWORK DRIVERS
 M:	Ursula Braun <ursula.braun@de.ibm.com>
@@ -4992,6 +5014,12 @@
 S:	Maintained
 F:	drivers/mmc/host/sdhci-s3c.c
 
+SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) ST SPEAR DRIVER
+M:	Viresh Kumar <viresh.kumar@st.com>
+L:	linux-mmc@vger.kernel.org
+S:	Maintained
+F:	drivers/mmc/host/sdhci-spear.c
+
 SECURITY SUBSYSTEM
 M:	James Morris <jmorris@namei.org>
 L:	linux-security-module@vger.kernel.org (suggested Cc:)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index b719398..3e2e540 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -51,10 +51,6 @@
 	bool
 	default y
 
-config ARCH_USES_GETTIMEOFFSET
-	bool
-	default y
-
 config GENERIC_CMOS_UPDATE
         def_bool y
 
@@ -65,6 +61,9 @@
 config NEED_DMA_MAP_STATE
        def_bool y
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config GENERIC_ISA_DMA
 	bool
 	default y
diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h
index 296da1d..1dce24b 100644
--- a/arch/alpha/include/asm/bitops.h
+++ b/arch/alpha/include/asm/bitops.h
@@ -438,22 +438,20 @@
 
 /*
  * Every architecture must define this function. It's the fastest
- * way of searching a 140-bit bitmap where the first 100 bits are
- * unlikely to be set. It's guaranteed that at least one of the 140
- * bits is set.
+ * way of searching a 100-bit bitmap.  It's guaranteed that at least
+ * one of the 100 bits is cleared.
  */
 static inline unsigned long
-sched_find_first_bit(unsigned long b[3])
+sched_find_first_bit(const unsigned long b[2])
 {
-	unsigned long b0 = b[0], b1 = b[1], b2 = b[2];
-	unsigned long ofs;
+	unsigned long b0, b1, ofs, tmp;
 
-	ofs = (b1 ? 64 : 128);
-	b1 = (b1 ? b1 : b2);
-	ofs = (b0 ? 0 : ofs);
-	b0 = (b0 ? b0 : b1);
+	b0 = b[0];
+	b1 = b[1];
+	ofs = (b0 ? 0 : 64);
+	tmp = (b0 ? b0 : b1);
 
-	return __ffs(b0) + ofs;
+	return __ffs(tmp) + ofs;
 }
 
 #include <asm-generic/bitops/ext2-non-atomic.h>
diff --git a/arch/alpha/include/asm/scatterlist.h b/arch/alpha/include/asm/scatterlist.h
index 440747c..5728c52 100644
--- a/arch/alpha/include/asm/scatterlist.h
+++ b/arch/alpha/include/asm/scatterlist.h
@@ -1,24 +1,7 @@
 #ifndef _ALPHA_SCATTERLIST_H
 #define _ALPHA_SCATTERLIST_H
 
-#include <asm/page.h>
-#include <asm/types.h>
-  
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	unsigned long page_link;
-	unsigned int offset;
-
-	unsigned int length;
-
-	dma_addr_t dma_address;
-	__u32 dma_length;
-};
-
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->dma_length)
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (~0UL)
 
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index 5465e93..1efbed8 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -51,6 +51,7 @@
 #include <linux/mc146818rtc.h>
 #include <linux/time.h>
 #include <linux/timex.h>
+#include <linux/clocksource.h>
 
 #include "proto.h"
 #include "irq_impl.h"
@@ -332,6 +333,34 @@
 	return rpcc();
 }
 
+#ifndef CONFIG_SMP
+/* Until and unless we figure out how to get cpu cycle counters
+   in sync and keep them there, we can't use the rpcc.  */
+static cycle_t read_rpcc(struct clocksource *cs)
+{
+	cycle_t ret = (cycle_t)rpcc();
+	return ret;
+}
+
+static struct clocksource clocksource_rpcc = {
+	.name                   = "rpcc",
+	.rating                 = 300,
+	.read                   = read_rpcc,
+	.mask                   = CLOCKSOURCE_MASK(32),
+	.flags                  = CLOCK_SOURCE_IS_CONTINUOUS
+};
+
+static inline void register_rpcc_clocksource(long cycle_freq)
+{
+	clocksource_calc_mult_shift(&clocksource_rpcc, cycle_freq, 4);
+	clocksource_register(&clocksource_rpcc);
+}
+#else /* !CONFIG_SMP */
+static inline void register_rpcc_clocksource(long cycle_freq)
+{
+}
+#endif /* !CONFIG_SMP */
+
 void __init
 time_init(void)
 {
@@ -385,6 +414,8 @@
 		__you_loose();
 	}
 
+	register_rpcc_clocksource(cycle_freq);
+
 	state.last_time = cc1;
 	state.scaled_ticks_per_cycle
 		= ((unsigned long) HZ << FIX_SHIFT) / cycle_freq;
@@ -395,44 +426,6 @@
 }
 
 /*
- * Use the cycle counter to estimate an displacement from the last time
- * tick.  Unfortunately the Alpha designers made only the low 32-bits of
- * the cycle counter active, so we overflow on 8.2 seconds on a 500MHz
- * part.  So we can't do the "find absolute time in terms of cycles" thing
- * that the other ports do.
- */
-u32 arch_gettimeoffset(void)
-{
-#ifdef CONFIG_SMP
-	/* Until and unless we figure out how to get cpu cycle counters
-	   in sync and keep them there, we can't use the rpcc tricks.  */
-	return 0;
-#else
-	unsigned long delta_cycles, delta_usec, partial_tick;
-
-	delta_cycles = rpcc() - state.last_time;
-	partial_tick = state.partial_tick;
-	/*
-	 * usec = cycles * ticks_per_cycle * 2**48 * 1e6 / (2**48 * ticks)
-	 *	= cycles * (s_t_p_c) * 1e6 / (2**48 * ticks)
-	 *	= cycles * (s_t_p_c) * 15625 / (2**42 * ticks)
-	 *
-	 * which, given a 600MHz cycle and a 1024Hz tick, has a
-	 * dynamic range of about 1.7e17, which is less than the
-	 * 1.8e19 in an unsigned long, so we are safe from overflow.
-	 *
-	 * Round, but with .5 up always, since .5 to even is harder
-	 * with no clear gain.
-	 */
-
-	delta_usec = (delta_cycles * state.scaled_ticks_per_cycle 
-		      + partial_tick) * 15625;
-	delta_usec = ((delta_usec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2;
-	return delta_usec * 1000;
-#endif
-}
-
-/*
  * In order to set the CMOS clock precisely, set_rtc_mmss has to be
  * called 500 ms after the second nowtime has started, because when
  * nowtime is written into the registers of the CMOS clock, it will
diff --git a/arch/alpha/math-emu/sfp-util.h b/arch/alpha/math-emu/sfp-util.h
index d4c6ae7..f53707f 100644
--- a/arch/alpha/math-emu/sfp-util.h
+++ b/arch/alpha/math-emu/sfp-util.h
@@ -28,3 +28,8 @@
 #define UDIV_NEEDS_NORMALIZATION 1  
 
 #define abort()			goto bad_insn
+
+#ifndef __LITTLE_ENDIAN
+#define __LITTLE_ENDIAN -1
+#endif
+#define __BYTE_ORDER __LITTLE_ENDIAN
diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
index 00a31de..fadd5f8 100644
--- a/arch/alpha/mm/fault.c
+++ b/arch/alpha/mm/fault.c
@@ -142,7 +142,6 @@
 			goto bad_area;
 	}
 
- survive:
 	/* If for any reason at all we couldn't handle the fault,
 	   make sure we exit gracefully rather than endlessly redo
 	   the fault.  */
@@ -188,16 +187,10 @@
 	/* We ran out of memory, or some other thing happened to us that
 	   made us unable to handle the page fault gracefully.  */
  out_of_memory:
-	if (is_global_init(current)) {
-		yield();
-		down_read(&mm->mmap_sem);
-		goto survive;
-	}
-	printk(KERN_ALERT "VM: killing process %s(%d)\n",
-	       current->comm, task_pid_nr(current));
 	if (!user_mode(regs))
 		goto no_context;
-	do_group_exit(SIGKILL);
+	pagefault_out_of_memory();
+	return;
 
  do_sigbus:
 	/* Send a sigbus, regardless of whether we were in kernel
diff --git a/arch/arm/configs/s3c2410_defconfig b/arch/arm/configs/s3c2410_defconfig
index 9236475..44cea2d 100644
--- a/arch/arm/configs/s3c2410_defconfig
+++ b/arch/arm/configs/s3c2410_defconfig
@@ -1,12 +1,14 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.34
-# Sat May 22 03:17:31 2010
+# Fri May 28 19:15:48 2010
 #
 CONFIG_ARM=y
 CONFIG_HAVE_PWM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -35,6 +37,7 @@
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_BZIP2 is not set
@@ -186,9 +189,11 @@
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -224,7 +229,7 @@
 # CONFIG_ARCH_S3C64XX is not set
 # CONFIG_ARCH_S5P6440 is not set
 # CONFIG_ARCH_S5P6442 is not set
-# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_S5PC100 is not set
 # CONFIG_ARCH_S5PV210 is not set
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
@@ -233,6 +238,7 @@
 # CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
+# CONFIG_PLAT_SPEAR is not set
 CONFIG_PLAT_SAMSUNG=y
 
 #
@@ -243,11 +249,18 @@
 CONFIG_S3C_BOOT_UART_FORCE_FIFO=y
 CONFIG_S3C_LOWLEVEL_UART_PORT=0
 CONFIG_SAMSUNG_CLKSRC=y
+CONFIG_S3C_GPIO_CFG_S3C24XX=y
+CONFIG_S3C_GPIO_PULL_UPDOWN=y
+CONFIG_S3C_GPIO_PULL_UP=y
 CONFIG_SAMSUNG_GPIO_EXTRA=0
 CONFIG_S3C_GPIO_SPACE=0
 CONFIG_S3C_ADC=y
 CONFIG_S3C_DEV_HSMMC=y
+CONFIG_S3C_DEV_HSMMC1=y
+CONFIG_S3C_DEV_HWMON=y
+CONFIG_S3C_DEV_FB=y
 CONFIG_S3C_DEV_USB_HOST=y
+CONFIG_S3C_DEV_WDT=y
 CONFIG_S3C_DEV_NAND=y
 CONFIG_S3C_DMA=y
 
@@ -260,6 +273,7 @@
 CONFIG_CPU_LLSERIAL_S3C2410=y
 CONFIG_CPU_LLSERIAL_S3C2440=y
 CONFIG_S3C2410_CLOCK=y
+CONFIG_S3C2443_CLOCK=y
 CONFIG_S3C24XX_DCLK=y
 CONFIG_S3C24XX_PWM=y
 CONFIG_S3C24XX_GPIO_EXTRA=128
@@ -270,6 +284,7 @@
 # CONFIG_S3C2410_DMA_DEBUG is not set
 CONFIG_MACH_SMDK=y
 CONFIG_S3C24XX_SIMTEC_AUDIO=y
+CONFIG_S3C2410_SETUP_TS=y
 
 #
 # S3C2400 Machines
@@ -289,6 +304,7 @@
 # CONFIG_H1940BT is not set
 CONFIG_PM_H1940=y
 CONFIG_MACH_N30=y
+CONFIG_MACH_N35=y
 CONFIG_ARCH_BAST=y
 CONFIG_MACH_OTOM=y
 CONFIG_MACH_AML_M5900=y
@@ -309,6 +325,13 @@
 CONFIG_MACH_S3C2413=y
 CONFIG_MACH_SMDK2412=y
 CONFIG_MACH_VSTMS=y
+CONFIG_CPU_S3C2416=y
+CONFIG_S3C2416_DMA=y
+
+#
+# S3C2416 Machines
+#
+CONFIG_MACH_SMDK2416=y
 CONFIG_CPU_S3C2440=y
 CONFIG_CPU_S3C2442=y
 CONFIG_CPU_S3C244X=y
@@ -320,9 +343,9 @@
 # S3C2440 and S3C2442 Machines
 #
 CONFIG_MACH_ANUBIS=y
-# CONFIG_MACH_NEO1973_GTA02 is not set
+CONFIG_MACH_NEO1973_GTA02=y
 CONFIG_MACH_OSIRIS=y
-# CONFIG_MACH_OSIRIS_DVS is not set
+CONFIG_MACH_OSIRIS_DVS=m
 CONFIG_MACH_RX3715=y
 CONFIG_ARCH_S3C2440=y
 CONFIG_MACH_NEXCODER_2440=y
@@ -330,6 +353,7 @@
 CONFIG_SMDK2440_CPU2442=y
 CONFIG_MACH_AT2440EVB=y
 CONFIG_MACH_MINI2440=y
+CONFIG_MACH_RX1950=y
 CONFIG_CPU_S3C2443=y
 CONFIG_S3C2443_DMA=y
 
@@ -410,6 +434,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_CMDLINE="root=/dev/hda1 ro init=/bin/bash console=ttySAC0"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -509,7 +534,9 @@
 # CONFIG_DEFAULT_BIC is not set
 CONFIG_DEFAULT_CUBIC=y
 # CONFIG_DEFAULT_HTCP is not set
+# CONFIG_DEFAULT_HYBLA is not set
 # CONFIG_DEFAULT_VEGAS is not set
+# CONFIG_DEFAULT_VENO is not set
 # CONFIG_DEFAULT_WESTWOOD is not set
 # CONFIG_DEFAULT_RENO is not set
 CONFIG_DEFAULT_TCP_CONG="cubic"
@@ -566,6 +593,16 @@
 CONFIG_NF_CT_NETLINK=m
 # CONFIG_NETFILTER_TPROXY is not set
 CONFIG_NETFILTER_XTABLES=m
+
+#
+# Xtables combined modules
+#
+CONFIG_NETFILTER_XT_MARK=m
+CONFIG_NETFILTER_XT_CONNMARK=m
+
+#
+# Xtables targets
+#
 CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
 CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
 # CONFIG_NETFILTER_XT_TARGET_CT is not set
@@ -577,9 +614,14 @@
 CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
 # CONFIG_NETFILTER_XT_TARGET_NOTRACK is not set
 CONFIG_NETFILTER_XT_TARGET_RATEEST=m
+# CONFIG_NETFILTER_XT_TARGET_TEE is not set
 # CONFIG_NETFILTER_XT_TARGET_TRACE is not set
 CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
 # CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP is not set
+
+#
+# Xtables matches
+#
 CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
 CONFIG_NETFILTER_XT_MATCH_COMMENT=m
 CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
@@ -598,6 +640,7 @@
 CONFIG_NETFILTER_XT_MATCH_MAC=m
 CONFIG_NETFILTER_XT_MATCH_MARK=m
 CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+# CONFIG_NETFILTER_XT_MATCH_OSF is not set
 CONFIG_NETFILTER_XT_MATCH_OWNER=m
 CONFIG_NETFILTER_XT_MATCH_POLICY=m
 CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
@@ -605,7 +648,6 @@
 CONFIG_NETFILTER_XT_MATCH_RATEEST=m
 CONFIG_NETFILTER_XT_MATCH_REALM=m
 CONFIG_NETFILTER_XT_MATCH_RECENT=m
-# CONFIG_NETFILTER_XT_MATCH_RECENT_PROC_COMPAT is not set
 CONFIG_NETFILTER_XT_MATCH_SCTP=m
 CONFIG_NETFILTER_XT_MATCH_STATE=m
 CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
@@ -613,7 +655,6 @@
 CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
 CONFIG_NETFILTER_XT_MATCH_TIME=m
 CONFIG_NETFILTER_XT_MATCH_U32=m
-# CONFIG_NETFILTER_XT_MATCH_OSF is not set
 CONFIG_IP_VS=m
 # CONFIG_IP_VS_IPV6 is not set
 # CONFIG_IP_VS_DEBUG is not set
@@ -713,6 +754,7 @@
 # CONFIG_RDS is not set
 # CONFIG_TIPC is not set
 # CONFIG_ATM is not set
+# CONFIG_L2TP is not set
 # CONFIG_BRIDGE is not set
 # CONFIG_NET_DSA is not set
 # CONFIG_VLAN_8021Q is not set
@@ -739,6 +781,7 @@
 # CONFIG_IRDA is not set
 CONFIG_BT=m
 CONFIG_BT_L2CAP=m
+# CONFIG_BT_L2CAP_EXT_FEATURES is not set
 CONFIG_BT_SCO=m
 CONFIG_BT_RFCOMM=m
 CONFIG_BT_RFCOMM_TTY=y
@@ -775,6 +818,7 @@
 CONFIG_WIRELESS_EXT_SYSFS=y
 # CONFIG_LIB80211 is not set
 CONFIG_MAC80211=m
+CONFIG_MAC80211_HAS_RC=y
 CONFIG_MAC80211_RC_MINSTREL=y
 # CONFIG_MAC80211_RC_DEFAULT_PID is not set
 CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
@@ -785,6 +829,7 @@
 # CONFIG_WIMAX is not set
 # CONFIG_RFKILL is not set
 # CONFIG_NET_9P is not set
+# CONFIG_CAIF is not set
 
 #
 # Device Drivers
@@ -828,6 +873,7 @@
 # CONFIG_INFTL is not set
 # CONFIG_RFD_FTL is not set
 # CONFIG_SSFDC is not set
+# CONFIG_SM_FTL is not set
 # CONFIG_MTD_OOPS is not set
 
 #
@@ -882,9 +928,12 @@
 # CONFIG_MTD_DOC2001 is not set
 # CONFIG_MTD_DOC2001PLUS is not set
 CONFIG_MTD_NAND=y
-# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+CONFIG_MTD_NAND_ECC=y
 # CONFIG_MTD_NAND_ECC_SMC is not set
+# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+# CONFIG_MTD_SM_COMMON is not set
 # CONFIG_MTD_NAND_MUSEUM_IDS is not set
+CONFIG_MTD_NAND_DENALI_SCRATCH_REG_ADDR=0xFF108018
 # CONFIG_MTD_NAND_GPIO is not set
 CONFIG_MTD_NAND_IDS=y
 CONFIG_MTD_NAND_S3C2410=y
@@ -1149,6 +1198,7 @@
 # CONFIG_QT2160 is not set
 # CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_GPIO is not set
+# CONFIG_KEYBOARD_TCA6416 is not set
 # CONFIG_KEYBOARD_MATRIX is not set
 # CONFIG_KEYBOARD_LM8323 is not set
 # CONFIG_KEYBOARD_MAX7359 is not set
@@ -1212,6 +1262,7 @@
 # CONFIG_TOUCHSCREEN_AD7879_SPI is not set
 # CONFIG_TOUCHSCREEN_AD7879 is not set
 # CONFIG_TOUCHSCREEN_DYNAPRO is not set
+# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
 # CONFIG_TOUCHSCREEN_EETI is not set
 # CONFIG_TOUCHSCREEN_FUJITSU is not set
 # CONFIG_TOUCHSCREEN_S3C2410 is not set
@@ -1248,6 +1299,7 @@
 # CONFIG_TOUCHSCREEN_TSC2007 is not set
 # CONFIG_TOUCHSCREEN_W90X900 is not set
 CONFIG_INPUT_MISC=y
+# CONFIG_INPUT_AD714X is not set
 CONFIG_INPUT_ATI_REMOTE=m
 CONFIG_INPUT_ATI_REMOTE2=m
 CONFIG_INPUT_KEYSPAN_REMOTE=m
@@ -1255,6 +1307,8 @@
 CONFIG_INPUT_YEALINK=m
 CONFIG_INPUT_CM109=m
 CONFIG_INPUT_UINPUT=m
+# CONFIG_INPUT_PCF50633_PMU is not set
+# CONFIG_INPUT_PCF8574 is not set
 CONFIG_INPUT_GPIO_ROTARY_ENCODER=m
 
 #
@@ -1287,6 +1341,7 @@
 # CONFIG_MOXA_INTELLIO is not set
 # CONFIG_MOXA_SMARTIO is not set
 # CONFIG_N_HDLC is not set
+# CONFIG_N_GSM is not set
 # CONFIG_RISCOM8 is not set
 # CONFIG_SPECIALIX is not set
 # CONFIG_STALDRV is not set
@@ -1324,6 +1379,8 @@
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -1439,7 +1496,16 @@
 # AC97 GPIO expanders:
 #
 # CONFIG_W1 is not set
-# CONFIG_POWER_SUPPLY is not set
+CONFIG_POWER_SUPPLY=y
+# CONFIG_POWER_SUPPLY_DEBUG is not set
+# CONFIG_PDA_POWER is not set
+# CONFIG_APM_POWER is not set
+# CONFIG_TEST_POWER is not set
+# CONFIG_BATTERY_DS2760 is not set
+# CONFIG_BATTERY_DS2782 is not set
+# CONFIG_BATTERY_BQ27x00 is not set
+# CONFIG_BATTERY_MAX17040 is not set
+# CONFIG_CHARGER_PCF50633 is not set
 CONFIG_HWMON=y
 CONFIG_HWMON_VID=m
 # CONFIG_HWMON_DEBUG_CHIP is not set
@@ -1499,6 +1565,7 @@
 # CONFIG_SENSORS_SMSC47M192 is not set
 # CONFIG_SENSORS_SMSC47B397 is not set
 # CONFIG_SENSORS_ADS7828 is not set
+# CONFIG_SENSORS_ADS7871 is not set
 # CONFIG_SENSORS_AMC6821 is not set
 # CONFIG_SENSORS_THMC50 is not set
 # CONFIG_SENSORS_TMP401 is not set
@@ -1555,7 +1622,7 @@
 # CONFIG_HTC_PASIC3 is not set
 # CONFIG_HTC_I2CPLD is not set
 # CONFIG_UCB1400_CORE is not set
-# CONFIG_TPS65010 is not set
+CONFIG_TPS65010=m
 # CONFIG_TWL4030_CORE is not set
 # CONFIG_MFD_TMIO is not set
 # CONFIG_MFD_T7L66XB is not set
@@ -1568,8 +1635,10 @@
 # CONFIG_MFD_WM831X is not set
 # CONFIG_MFD_WM8350_I2C is not set
 # CONFIG_MFD_WM8994 is not set
-# CONFIG_MFD_PCF50633 is not set
+CONFIG_MFD_PCF50633=y
 # CONFIG_MFD_MC13783 is not set
+# CONFIG_PCF50633_ADC is not set
+CONFIG_PCF50633_GPIO=y
 # CONFIG_AB3100_CORE is not set
 # CONFIG_EZX_PCAP is not set
 # CONFIG_AB4500_CORE is not set
@@ -1685,6 +1754,7 @@
 CONFIG_SND_S3C_I2SV2_SOC=m
 CONFIG_SND_S3C2412_SOC_I2S=m
 CONFIG_SND_S3C_SOC_AC97=m
+# CONFIG_SND_S3C24XX_SOC_NEO1973_GTA02_WM8753 is not set
 CONFIG_SND_S3C24XX_SOC_JIVE_WM8750=m
 CONFIG_SND_S3C24XX_SOC_SMDK2443_WM9710=m
 CONFIG_SND_S3C24XX_SOC_LN2440SBC_ALC650=m
@@ -1836,10 +1906,12 @@
 # CONFIG_USB_SERIAL_TI is not set
 # CONFIG_USB_SERIAL_CYBERJACK is not set
 # CONFIG_USB_SERIAL_XIRCOM is not set
+CONFIG_USB_SERIAL_WWAN=m
 CONFIG_USB_SERIAL_OPTION=m
 # CONFIG_USB_SERIAL_OMNINET is not set
 # CONFIG_USB_SERIAL_OPTICON is not set
 # CONFIG_USB_SERIAL_VIVOPAY_SERIAL is not set
+# CONFIG_USB_SERIAL_ZIO is not set
 # CONFIG_USB_SERIAL_DEBUG is not set
 
 #
@@ -1991,6 +2063,7 @@
 # CONFIG_RTC_DRV_BQ4802 is not set
 # CONFIG_RTC_DRV_RP5C01 is not set
 # CONFIG_RTC_DRV_V3020 is not set
+# CONFIG_RTC_DRV_PCF50633 is not set
 
 #
 # on-CPU RTC drivers
@@ -1999,10 +2072,6 @@
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
-
-#
-# TI VLYNQ
-#
 # CONFIG_STAGING is not set
 
 #
@@ -2274,6 +2343,7 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -2284,6 +2354,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
diff --git a/arch/arm/configs/s3c6400_defconfig b/arch/arm/configs/s3c6400_defconfig
index a3a9993..2b64238 100644
--- a/arch/arm/configs/s3c6400_defconfig
+++ b/arch/arm/configs/s3c6400_defconfig
@@ -1,11 +1,14 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.34
-# Sat May 22 03:17:32 2010
+# Fri May 28 19:05:39 2010
 #
 CONFIG_ARM=y
+CONFIG_HAVE_PWM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -34,6 +37,7 @@
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_BZIP2 is not set
@@ -179,9 +183,11 @@
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -217,7 +223,7 @@
 CONFIG_ARCH_S3C64XX=y
 # CONFIG_ARCH_S5P6440 is not set
 # CONFIG_ARCH_S5P6442 is not set
-# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_S5PC100 is not set
 # CONFIG_ARCH_S5PV210 is not set
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
@@ -226,6 +232,7 @@
 # CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
+# CONFIG_PLAT_SPEAR is not set
 CONFIG_PLAT_SAMSUNG=y
 
 #
@@ -247,11 +254,17 @@
 # CONFIG_S3C_ADC is not set
 CONFIG_S3C_DEV_HSMMC=y
 CONFIG_S3C_DEV_HSMMC1=y
+CONFIG_S3C_DEV_HSMMC2=y
+CONFIG_S3C_DEV_HWMON=y
 CONFIG_S3C_DEV_I2C1=y
 CONFIG_S3C_DEV_FB=y
 CONFIG_S3C_DEV_USB_HOST=y
 CONFIG_S3C_DEV_USB_HSOTG=y
+CONFIG_S3C_DEV_WDT=y
 CONFIG_S3C_DEV_NAND=y
+CONFIG_S3C_DEV_RTC=y
+CONFIG_SAMSUNG_DEV_ADC=y
+CONFIG_SAMSUNG_DEV_TS=y
 CONFIG_S3C_DMA=y
 
 #
@@ -260,7 +273,9 @@
 # CONFIG_SAMSUNG_PM_DEBUG is not set
 # CONFIG_S3C_PM_DEBUG_LED_SMDK is not set
 # CONFIG_SAMSUNG_PM_CHECK is not set
+CONFIG_SAMSUNG_WAKEMASK=y
 CONFIG_PLAT_S3C64XX=y
+CONFIG_CPU_S3C6400=y
 CONFIG_CPU_S3C6410=y
 CONFIG_S3C64XX_DMA=y
 CONFIG_S3C64XX_SETUP_SDHCI=y
@@ -268,15 +283,18 @@
 CONFIG_S3C64XX_SETUP_I2C1=y
 CONFIG_S3C64XX_SETUP_FB_24BPP=y
 CONFIG_S3C64XX_SETUP_SDHCI_GPIO=y
-# CONFIG_MACH_SMDK6400 is not set
-# CONFIG_MACH_ANW6410 is not set
+CONFIG_MACH_SMDK6400=y
+CONFIG_MACH_ANW6410=y
 CONFIG_MACH_SMDK6410=y
 CONFIG_SMDK6410_SD_CH0=y
 # CONFIG_SMDK6410_SD_CH1 is not set
 # CONFIG_SMDK6410_WM1190_EV1 is not set
 # CONFIG_SMDK6410_WM1192_EV1 is not set
-# CONFIG_MACH_NCP is not set
-# CONFIG_MACH_HMT is not set
+CONFIG_MACH_NCP=y
+CONFIG_MACH_HMT=y
+CONFIG_MACH_SMARTQ=y
+CONFIG_MACH_SMARTQ5=y
+CONFIG_MACH_SMARTQ7=y
 
 #
 # Processor Type
@@ -302,6 +320,7 @@
 # CONFIG_CPU_DCACHE_DISABLE is not set
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
 CONFIG_CPU_HAS_PMU=y
 # CONFIG_ARM_ERRATA_411920 is not set
 CONFIG_ARM_VIC=y
@@ -352,6 +371,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_CMDLINE="console=ttySAC0,115200 root=/dev/ram init=/linuxrc initrd=0x51000000,6M ramdisk_size=6144"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -430,6 +450,7 @@
 # CONFIG_INFTL is not set
 # CONFIG_RFD_FTL is not set
 # CONFIG_SSFDC is not set
+# CONFIG_SM_FTL is not set
 # CONFIG_MTD_OOPS is not set
 
 #
@@ -460,6 +481,9 @@
 #
 # Self-contained MTD device drivers
 #
+# CONFIG_MTD_DATAFLASH is not set
+# CONFIG_MTD_M25P80 is not set
+# CONFIG_MTD_SST25L is not set
 # CONFIG_MTD_SLRAM is not set
 # CONFIG_MTD_PHRAM is not set
 # CONFIG_MTD_MTDRAM is not set
@@ -472,9 +496,12 @@
 # CONFIG_MTD_DOC2001 is not set
 # CONFIG_MTD_DOC2001PLUS is not set
 CONFIG_MTD_NAND=y
-# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+CONFIG_MTD_NAND_ECC=y
 # CONFIG_MTD_NAND_ECC_SMC is not set
+# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+# CONFIG_MTD_SM_COMMON is not set
 # CONFIG_MTD_NAND_MUSEUM_IDS is not set
+CONFIG_MTD_NAND_DENALI_SCRATCH_REG_ADDR=0xFF108018
 # CONFIG_MTD_NAND_GPIO is not set
 CONFIG_MTD_NAND_IDS=y
 CONFIG_MTD_NAND_S3C2410=y
@@ -483,6 +510,7 @@
 # CONFIG_MTD_NAND_S3C2410_CLKSTOP is not set
 # CONFIG_MTD_NAND_DISKONCHIP is not set
 # CONFIG_MTD_NAND_PLATFORM is not set
+# CONFIG_MTD_ALAUDA is not set
 # CONFIG_MTD_ONENAND is not set
 
 #
@@ -503,6 +531,7 @@
 #
 # DRBD disabled because PROC_FS, INET or CONNECTOR not selected
 #
+# CONFIG_BLK_DEV_UB is not set
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=16
 CONFIG_BLK_DEV_RAM_SIZE=4096
@@ -516,12 +545,14 @@
 # CONFIG_ISL29003 is not set
 # CONFIG_SENSORS_TSL2550 is not set
 # CONFIG_DS1682 is not set
+# CONFIG_TI_DAC7512 is not set
 # CONFIG_C2PORT is not set
 
 #
 # EEPROM support
 #
 CONFIG_EEPROM_AT24=y
+# CONFIG_EEPROM_AT25 is not set
 # CONFIG_EEPROM_LEGACY is not set
 # CONFIG_EEPROM_MAX6875 is not set
 # CONFIG_EEPROM_93CX6 is not set
@@ -569,6 +600,7 @@
 # CONFIG_QT2160 is not set
 # CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_GPIO is not set
+# CONFIG_KEYBOARD_TCA6416 is not set
 # CONFIG_KEYBOARD_MATRIX is not set
 # CONFIG_KEYBOARD_MAX7359 is not set
 # CONFIG_KEYBOARD_NEWTON is not set
@@ -635,9 +667,12 @@
 # CONFIG_SERIAL_SAMSUNG_DEBUG is not set
 CONFIG_SERIAL_SAMSUNG_CONSOLE=y
 CONFIG_SERIAL_S3C6400=y
+# CONFIG_SERIAL_MAX3100 is not set
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -673,6 +708,7 @@
 #
 # CONFIG_I2C_PARPORT_LIGHT is not set
 # CONFIG_I2C_TAOS_EVM is not set
+# CONFIG_I2C_TINY_USB is not set
 
 #
 # Other I2C/SMBus bus drivers
@@ -682,7 +718,24 @@
 # CONFIG_I2C_DEBUG_CORE is not set
 # CONFIG_I2C_DEBUG_ALGO is not set
 # CONFIG_I2C_DEBUG_BUS is not set
-# CONFIG_SPI is not set
+CONFIG_SPI=y
+# CONFIG_SPI_DEBUG is not set
+CONFIG_SPI_MASTER=y
+
+#
+# SPI Master Controller Drivers
+#
+CONFIG_SPI_BITBANG=m
+CONFIG_SPI_GPIO=m
+CONFIG_SPI_S3C64XX=m
+# CONFIG_SPI_XILINX is not set
+# CONFIG_SPI_DESIGNWARE is not set
+
+#
+# SPI Protocol Masters
+#
+# CONFIG_SPI_SPIDEV is not set
+# CONFIG_SPI_TLE62X0 is not set
 
 #
 # PPS support
@@ -714,6 +767,9 @@
 #
 # SPI GPIO expanders:
 #
+# CONFIG_GPIO_MAX7301 is not set
+# CONFIG_GPIO_MCP23S08 is not set
+# CONFIG_GPIO_MC33880 is not set
 
 #
 # AC97 GPIO expanders:
@@ -729,6 +785,7 @@
 #
 # CONFIG_SENSORS_AD7414 is not set
 # CONFIG_SENSORS_AD7418 is not set
+# CONFIG_SENSORS_ADCXX is not set
 # CONFIG_SENSORS_ADM1021 is not set
 # CONFIG_SENSORS_ADM1025 is not set
 # CONFIG_SENSORS_ADM1026 is not set
@@ -750,6 +807,7 @@
 # CONFIG_SENSORS_GL520SM is not set
 # CONFIG_SENSORS_IT87 is not set
 # CONFIG_SENSORS_LM63 is not set
+# CONFIG_SENSORS_LM70 is not set
 # CONFIG_SENSORS_LM73 is not set
 # CONFIG_SENSORS_LM75 is not set
 # CONFIG_SENSORS_LM77 is not set
@@ -764,6 +822,7 @@
 # CONFIG_SENSORS_LTC4215 is not set
 # CONFIG_SENSORS_LTC4245 is not set
 # CONFIG_SENSORS_LM95241 is not set
+# CONFIG_SENSORS_MAX1111 is not set
 # CONFIG_SENSORS_MAX1619 is not set
 # CONFIG_SENSORS_MAX6650 is not set
 # CONFIG_SENSORS_PC87360 is not set
@@ -775,6 +834,7 @@
 # CONFIG_SENSORS_SMSC47M192 is not set
 # CONFIG_SENSORS_SMSC47B397 is not set
 # CONFIG_SENSORS_ADS7828 is not set
+# CONFIG_SENSORS_ADS7871 is not set
 # CONFIG_SENSORS_AMC6821 is not set
 # CONFIG_SENSORS_THMC50 is not set
 # CONFIG_SENSORS_TMP401 is not set
@@ -788,9 +848,11 @@
 # CONFIG_SENSORS_W83L786NG is not set
 # CONFIG_SENSORS_W83627HF is not set
 # CONFIG_SENSORS_W83627EHF is not set
+# CONFIG_SENSORS_LIS3_SPI is not set
 # CONFIG_SENSORS_LIS3_I2C is not set
 # CONFIG_THERMAL is not set
 # CONFIG_WATCHDOG is not set
+CONFIG_HAVE_S3C2410_WATCHDOG=y
 CONFIG_SSB_POSSIBLE=y
 
 #
@@ -823,7 +885,10 @@
 # CONFIG_MFD_WM8350_I2C is not set
 # CONFIG_MFD_WM8994 is not set
 # CONFIG_MFD_PCF50633 is not set
+# CONFIG_MFD_MC13783 is not set
 # CONFIG_AB3100_CORE is not set
+# CONFIG_EZX_PCAP is not set
+# CONFIG_AB4500_CORE is not set
 # CONFIG_REGULATOR is not set
 # CONFIG_MEDIA_SUPPORT is not set
 
@@ -832,8 +897,47 @@
 #
 # CONFIG_VGASTATE is not set
 # CONFIG_VIDEO_OUTPUT_CONTROL is not set
-# CONFIG_FB is not set
-# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+CONFIG_FB=y
+# CONFIG_FIRMWARE_EDID is not set
+# CONFIG_FB_DDC is not set
+# CONFIG_FB_BOOT_VESA_SUPPORT is not set
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
+# CONFIG_FB_SYS_FILLRECT is not set
+# CONFIG_FB_SYS_COPYAREA is not set
+# CONFIG_FB_SYS_IMAGEBLIT is not set
+# CONFIG_FB_FOREIGN_ENDIAN is not set
+# CONFIG_FB_SYS_FOPS is not set
+# CONFIG_FB_SVGALIB is not set
+# CONFIG_FB_MACMODES is not set
+# CONFIG_FB_BACKLIGHT is not set
+# CONFIG_FB_MODE_HELPERS is not set
+# CONFIG_FB_TILEBLITTING is not set
+
+#
+# Frame buffer hardware drivers
+#
+# CONFIG_FB_S1D13XXX is not set
+CONFIG_FB_S3C=y
+# CONFIG_FB_S3C_DEBUG_REGWRITE is not set
+# CONFIG_FB_VIRTUAL is not set
+# CONFIG_FB_METRONOME is not set
+# CONFIG_FB_MB862XX is not set
+# CONFIG_FB_BROADSHEET is not set
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_LCD_CLASS_DEVICE=y
+# CONFIG_LCD_L4F00242T03 is not set
+# CONFIG_LCD_LMS283GF05 is not set
+CONFIG_LCD_LTV350QV=y
+# CONFIG_LCD_ILI9320 is not set
+# CONFIG_LCD_TDO24M is not set
+# CONFIG_LCD_VGG2432A4 is not set
+# CONFIG_LCD_PLATFORM is not set
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_GENERIC=y
+CONFIG_BACKLIGHT_PWM=y
 
 #
 # Display device support
@@ -845,6 +949,8 @@
 #
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_DUMMY_CONSOLE=y
+# CONFIG_FRAMEBUFFER_CONSOLE is not set
+# CONFIG_LOGO is not set
 CONFIG_SOUND=y
 CONFIG_SOUND_OSS_CORE=y
 CONFIG_SOUND_OSS_CORE_PRECLAIM=y
@@ -873,10 +979,16 @@
 # CONFIG_SND_SERIAL_U16550 is not set
 # CONFIG_SND_MPU401 is not set
 CONFIG_SND_ARM=y
+CONFIG_SND_SPI=y
+CONFIG_SND_USB=y
+# CONFIG_SND_USB_AUDIO is not set
+# CONFIG_SND_USB_UA101 is not set
+# CONFIG_SND_USB_CAIAQ is not set
 CONFIG_SND_SOC=m
 CONFIG_SND_SOC_AC97_BUS=y
 CONFIG_SND_S3C24XX_SOC=m
 CONFIG_SND_S3C_SOC_AC97=m
+# CONFIG_SND_S3C64XX_SOC_WM8580 is not set
 CONFIG_SND_SOC_SMDK_WM9713=m
 CONFIG_SND_SOC_I2C_AND_SPI=m
 # CONFIG_SND_SOC_ALL_CODECS is not set
@@ -886,29 +998,197 @@
 CONFIG_HID_SUPPORT=y
 CONFIG_HID=y
 # CONFIG_HIDRAW is not set
+
+#
+# USB Input Devices
+#
+CONFIG_USB_HID=y
 # CONFIG_HID_PID is not set
+# CONFIG_USB_HIDDEV is not set
 
 #
 # Special HID drivers
 #
+# CONFIG_HID_3M_PCT is not set
+CONFIG_HID_A4TECH=y
+CONFIG_HID_APPLE=y
+CONFIG_HID_BELKIN=y
+# CONFIG_HID_CANDO is not set
+CONFIG_HID_CHERRY=y
+CONFIG_HID_CHICONY=y
+# CONFIG_HID_PRODIKEYS is not set
+CONFIG_HID_CYPRESS=y
+# CONFIG_HID_DRAGONRISE is not set
+# CONFIG_HID_EGALAX is not set
+CONFIG_HID_EZKEY=y
+CONFIG_HID_KYE=y
+# CONFIG_HID_GYRATION is not set
+# CONFIG_HID_TWINHAN is not set
+CONFIG_HID_KENSINGTON=y
+CONFIG_HID_LOGITECH=y
+# CONFIG_LOGITECH_FF is not set
+# CONFIG_LOGIRUMBLEPAD2_FF is not set
+# CONFIG_LOGIG940_FF is not set
+CONFIG_HID_MICROSOFT=y
+# CONFIG_HID_MOSART is not set
+CONFIG_HID_MONTEREY=y
+# CONFIG_HID_NTRIG is not set
+# CONFIG_HID_ORTEK is not set
+# CONFIG_HID_PANTHERLORD is not set
+# CONFIG_HID_PETALYNX is not set
+# CONFIG_HID_PICOLCD is not set
+# CONFIG_HID_QUANTA is not set
+# CONFIG_HID_ROCCAT_KONE is not set
+# CONFIG_HID_SAMSUNG is not set
+# CONFIG_HID_SONY is not set
+# CONFIG_HID_STANTUM is not set
+# CONFIG_HID_SUNPLUS is not set
+# CONFIG_HID_GREENASIA is not set
+# CONFIG_HID_SMARTJOYPLUS is not set
+# CONFIG_HID_TOPSEED is not set
+# CONFIG_HID_THRUSTMASTER is not set
+# CONFIG_HID_ZEROPLUS is not set
+# CONFIG_HID_ZYDACRON is not set
 CONFIG_USB_SUPPORT=y
 CONFIG_USB_ARCH_HAS_HCD=y
 CONFIG_USB_ARCH_HAS_OHCI=y
 # CONFIG_USB_ARCH_HAS_EHCI is not set
-# CONFIG_USB is not set
+CONFIG_USB=y
+# CONFIG_USB_DEBUG is not set
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
 
 #
-# Enable Host or Gadget support to see Inventra options
+# Miscellaneous USB options
 #
+CONFIG_USB_DEVICEFS=y
+CONFIG_USB_DEVICE_CLASS=y
+# CONFIG_USB_DYNAMIC_MINORS is not set
+# CONFIG_USB_MON is not set
+# CONFIG_USB_WUSB is not set
+# CONFIG_USB_WUSB_CBAF is not set
+
+#
+# USB Host Controller Drivers
+#
+# CONFIG_USB_C67X00_HCD is not set
+# CONFIG_USB_OXU210HP_HCD is not set
+# CONFIG_USB_ISP116X_HCD is not set
+# CONFIG_USB_ISP1760_HCD is not set
+# CONFIG_USB_ISP1362_HCD is not set
+CONFIG_USB_OHCI_HCD=y
+# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set
+# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+# CONFIG_USB_SL811_HCD is not set
+# CONFIG_USB_R8A66597_HCD is not set
+# CONFIG_USB_HWA_HCD is not set
+# CONFIG_USB_MUSB_HDRC is not set
+
+#
+# USB Device Class drivers
+#
+CONFIG_USB_ACM=m
+CONFIG_USB_PRINTER=m
+# CONFIG_USB_WDM is not set
+# CONFIG_USB_TMC is not set
 
 #
 # NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
 #
+
+#
+# also be needed; see USB_STORAGE Help for more info
+#
+# CONFIG_USB_LIBUSUAL is not set
+
+#
+# USB Imaging devices
+#
+# CONFIG_USB_MDC800 is not set
+
+#
+# USB port drivers
+#
+CONFIG_USB_SERIAL=m
+# CONFIG_USB_EZUSB is not set
+CONFIG_USB_SERIAL_GENERIC=y
+# CONFIG_USB_SERIAL_AIRCABLE is not set
+# CONFIG_USB_SERIAL_ARK3116 is not set
+# CONFIG_USB_SERIAL_BELKIN is not set
+# CONFIG_USB_SERIAL_CH341 is not set
+# CONFIG_USB_SERIAL_WHITEHEAT is not set
+# CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
+# CONFIG_USB_SERIAL_CP210X is not set
+# CONFIG_USB_SERIAL_CYPRESS_M8 is not set
+CONFIG_USB_SERIAL_EMPEG=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+# CONFIG_USB_SERIAL_FUNSOFT is not set
+# CONFIG_USB_SERIAL_VISOR is not set
+# CONFIG_USB_SERIAL_IPAQ is not set
+# CONFIG_USB_SERIAL_IR is not set
+# CONFIG_USB_SERIAL_EDGEPORT is not set
+# CONFIG_USB_SERIAL_EDGEPORT_TI is not set
+# CONFIG_USB_SERIAL_GARMIN is not set
+# CONFIG_USB_SERIAL_IPW is not set
+# CONFIG_USB_SERIAL_IUU is not set
+# CONFIG_USB_SERIAL_KEYSPAN_PDA is not set
+# CONFIG_USB_SERIAL_KEYSPAN is not set
+# CONFIG_USB_SERIAL_KLSI is not set
+# CONFIG_USB_SERIAL_KOBIL_SCT is not set
+# CONFIG_USB_SERIAL_MCT_U232 is not set
+# CONFIG_USB_SERIAL_MOS7720 is not set
+# CONFIG_USB_SERIAL_MOS7840 is not set
+# CONFIG_USB_SERIAL_MOTOROLA is not set
+# CONFIG_USB_SERIAL_NAVMAN is not set
+CONFIG_USB_SERIAL_PL2303=m
+# CONFIG_USB_SERIAL_OTI6858 is not set
+# CONFIG_USB_SERIAL_QCAUX is not set
+# CONFIG_USB_SERIAL_QUALCOMM is not set
+# CONFIG_USB_SERIAL_SPCP8X5 is not set
+# CONFIG_USB_SERIAL_HP4X is not set
+# CONFIG_USB_SERIAL_SAFE is not set
+# CONFIG_USB_SERIAL_SIEMENS_MPI is not set
+# CONFIG_USB_SERIAL_SIERRAWIRELESS is not set
+# CONFIG_USB_SERIAL_SYMBOL is not set
+# CONFIG_USB_SERIAL_TI is not set
+# CONFIG_USB_SERIAL_CYBERJACK is not set
+# CONFIG_USB_SERIAL_XIRCOM is not set
+# CONFIG_USB_SERIAL_OPTION is not set
+# CONFIG_USB_SERIAL_OMNINET is not set
+# CONFIG_USB_SERIAL_OPTICON is not set
+# CONFIG_USB_SERIAL_VIVOPAY_SERIAL is not set
+# CONFIG_USB_SERIAL_ZIO is not set
+# CONFIG_USB_SERIAL_DEBUG is not set
+
+#
+# USB Miscellaneous drivers
+#
+# CONFIG_USB_EMI62 is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
+# CONFIG_USB_SEVSEG is not set
+# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_LEGOTOWER is not set
+# CONFIG_USB_LCD is not set
+# CONFIG_USB_LED is not set
+# CONFIG_USB_CYPRESS_CY7C63 is not set
+# CONFIG_USB_CYTHERM is not set
+# CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
+# CONFIG_USB_APPLEDISPLAY is not set
+# CONFIG_USB_LD is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
+# CONFIG_USB_IOWARRIOR is not set
+# CONFIG_USB_TEST is not set
+# CONFIG_USB_ISIGHTFW is not set
 # CONFIG_USB_GADGET is not set
 
 #
 # OTG and related infrastructure
 #
+# CONFIG_USB_GPIO_VBUS is not set
+# CONFIG_USB_ULPI is not set
+# CONFIG_NOP_USB_XCEIV is not set
 CONFIG_MMC=y
 CONFIG_MMC_DEBUG=y
 CONFIG_MMC_UNSAFE_RESUME=y
@@ -928,18 +1208,80 @@
 # CONFIG_MMC_SDHCI_PLTFM is not set
 CONFIG_MMC_SDHCI_S3C=y
 # CONFIG_MMC_SDHCI_S3C_DMA is not set
+# CONFIG_MMC_SPI is not set
 # CONFIG_MEMSTICK is not set
 # CONFIG_NEW_LEDS is not set
 # CONFIG_ACCESSIBILITY is not set
 CONFIG_RTC_LIB=y
-# CONFIG_RTC_CLASS is not set
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_HCTOSYS=y
+CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
+# CONFIG_RTC_DEBUG is not set
+
+#
+# RTC interfaces
+#
+CONFIG_RTC_INTF_SYSFS=y
+CONFIG_RTC_INTF_PROC=y
+CONFIG_RTC_INTF_DEV=y
+# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
+# CONFIG_RTC_DRV_TEST is not set
+
+#
+# I2C RTC drivers
+#
+# CONFIG_RTC_DRV_DS1307 is not set
+# CONFIG_RTC_DRV_DS1374 is not set
+# CONFIG_RTC_DRV_DS1672 is not set
+# CONFIG_RTC_DRV_MAX6900 is not set
+# CONFIG_RTC_DRV_RS5C372 is not set
+# CONFIG_RTC_DRV_ISL1208 is not set
+# CONFIG_RTC_DRV_X1205 is not set
+# CONFIG_RTC_DRV_PCF8563 is not set
+# CONFIG_RTC_DRV_PCF8583 is not set
+# CONFIG_RTC_DRV_M41T80 is not set
+# CONFIG_RTC_DRV_BQ32K is not set
+# CONFIG_RTC_DRV_S35390A is not set
+# CONFIG_RTC_DRV_FM3130 is not set
+# CONFIG_RTC_DRV_RX8581 is not set
+# CONFIG_RTC_DRV_RX8025 is not set
+
+#
+# SPI RTC drivers
+#
+# CONFIG_RTC_DRV_M41T94 is not set
+# CONFIG_RTC_DRV_DS1305 is not set
+# CONFIG_RTC_DRV_DS1390 is not set
+# CONFIG_RTC_DRV_MAX6902 is not set
+# CONFIG_RTC_DRV_R9701 is not set
+# CONFIG_RTC_DRV_RS5C348 is not set
+# CONFIG_RTC_DRV_DS3234 is not set
+# CONFIG_RTC_DRV_PCF2123 is not set
+
+#
+# Platform RTC drivers
+#
+# CONFIG_RTC_DRV_CMOS is not set
+# CONFIG_RTC_DRV_DS1286 is not set
+# CONFIG_RTC_DRV_DS1511 is not set
+# CONFIG_RTC_DRV_DS1553 is not set
+# CONFIG_RTC_DRV_DS1742 is not set
+# CONFIG_RTC_DRV_STK17TA8 is not set
+# CONFIG_RTC_DRV_M48T86 is not set
+# CONFIG_RTC_DRV_M48T35 is not set
+# CONFIG_RTC_DRV_M48T59 is not set
+# CONFIG_RTC_DRV_MSM6242 is not set
+# CONFIG_RTC_DRV_BQ4802 is not set
+# CONFIG_RTC_DRV_RP5C01 is not set
+# CONFIG_RTC_DRV_V3020 is not set
+
+#
+# on-CPU RTC drivers
+#
+CONFIG_RTC_DRV_S3C=y
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
-
-#
-# TI VLYNQ
-#
 # CONFIG_STAGING is not set
 
 #
@@ -1033,7 +1375,46 @@
 #
 # CONFIG_PARTITION_ADVANCED is not set
 CONFIG_MSDOS_PARTITION=y
-# CONFIG_NLS is not set
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="iso8859-1"
+# CONFIG_NLS_CODEPAGE_437 is not set
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ASCII is not set
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_UTF8 is not set
 
 #
 # Kernel hacking
@@ -1096,6 +1477,7 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -1106,6 +1488,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
diff --git a/arch/arm/configs/s5p6440_defconfig b/arch/arm/configs/s5p6440_defconfig
index 619bfab..532e987 100644
--- a/arch/arm/configs/s5p6440_defconfig
+++ b/arch/arm/configs/s5p6440_defconfig
@@ -1,11 +1,13 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.34
-# Sat May 22 03:18:18 2010
+# Wed May 26 19:04:32 2010
 #
 CONFIG_ARM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -33,6 +35,7 @@
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_BZIP2 is not set
@@ -178,9 +181,11 @@
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -216,7 +221,7 @@
 # CONFIG_ARCH_S3C64XX is not set
 CONFIG_ARCH_S5P6440=y
 # CONFIG_ARCH_S5P6442 is not set
-# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_S5PC100 is not set
 # CONFIG_ARCH_S5PV210 is not set
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
@@ -225,6 +230,7 @@
 # CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
+# CONFIG_PLAT_SPEAR is not set
 CONFIG_PLAT_SAMSUNG=y
 
 #
@@ -240,10 +246,15 @@
 CONFIG_S3C_GPIO_CFG_S3C24XX=y
 CONFIG_S3C_GPIO_CFG_S3C64XX=y
 CONFIG_S3C_GPIO_PULL_UPDOWN=y
+CONFIG_S5P_GPIO_DRVSTR=y
 CONFIG_SAMSUNG_GPIO_EXTRA=0
 CONFIG_S3C_GPIO_SPACE=0
 CONFIG_S3C_GPIO_TRACK=y
 # CONFIG_S3C_ADC is not set
+CONFIG_S3C_DEV_WDT=y
+CONFIG_SAMSUNG_DEV_ADC=y
+CONFIG_SAMSUNG_DEV_TS=y
+CONFIG_S3C_PL330_DMA=y
 
 #
 # Power management
@@ -276,10 +287,12 @@
 # CONFIG_CPU_DCACHE_DISABLE is not set
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
 CONFIG_CPU_HAS_PMU=y
 # CONFIG_ARM_ERRATA_411920 is not set
 CONFIG_ARM_VIC=y
 CONFIG_ARM_VIC_NR=2
+CONFIG_PL330=y
 
 #
 # Bus support
@@ -326,6 +339,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x20800000,8M console=ttySAC1,115200 init=/linuxrc"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -490,7 +504,9 @@
 CONFIG_INPUT_TOUCHSCREEN=y
 # CONFIG_TOUCHSCREEN_AD7879 is not set
 # CONFIG_TOUCHSCREEN_DYNAPRO is not set
+# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
 # CONFIG_TOUCHSCREEN_FUJITSU is not set
+# CONFIG_TOUCHSCREEN_S3C2410 is not set
 # CONFIG_TOUCHSCREEN_GUNZE is not set
 # CONFIG_TOUCHSCREEN_ELO is not set
 # CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
@@ -546,6 +562,8 @@
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -593,6 +611,7 @@
 # CONFIG_HWMON is not set
 # CONFIG_THERMAL is not set
 # CONFIG_WATCHDOG is not set
+CONFIG_HAVE_S3C2410_WATCHDOG=y
 CONFIG_SSB_POSSIBLE=y
 
 #
@@ -649,10 +668,6 @@
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
-
-#
-# TI VLYNQ
-#
 # CONFIG_STAGING is not set
 
 #
@@ -850,6 +865,7 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -860,6 +876,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
diff --git a/arch/arm/configs/s5p6442_defconfig b/arch/arm/configs/s5p6442_defconfig
index d7ea275..068219b 100644
--- a/arch/arm/configs/s5p6442_defconfig
+++ b/arch/arm/configs/s5p6442_defconfig
@@ -1,11 +1,13 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.34
-# Sat May 22 03:18:19 2010
+# Wed May 26 19:04:34 2010
 #
 CONFIG_ARM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -33,6 +35,7 @@
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_BZIP2 is not set
@@ -178,9 +181,11 @@
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -216,7 +221,7 @@
 # CONFIG_ARCH_S3C64XX is not set
 # CONFIG_ARCH_S5P6440 is not set
 CONFIG_ARCH_S5P6442=y
-# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_S5PC100 is not set
 # CONFIG_ARCH_S5PV210 is not set
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
@@ -225,6 +230,7 @@
 # CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
+# CONFIG_PLAT_SPEAR is not set
 CONFIG_PLAT_SAMSUNG=y
 
 #
@@ -240,10 +246,12 @@
 CONFIG_S3C_GPIO_CFG_S3C24XX=y
 CONFIG_S3C_GPIO_CFG_S3C64XX=y
 CONFIG_S3C_GPIO_PULL_UPDOWN=y
+CONFIG_S5P_GPIO_DRVSTR=y
 CONFIG_SAMSUNG_GPIO_EXTRA=0
 CONFIG_S3C_GPIO_SPACE=0
 CONFIG_S3C_GPIO_TRACK=y
 # CONFIG_S3C_ADC is not set
+CONFIG_S3C_PL330_DMA=y
 
 #
 # Power management
@@ -276,10 +284,12 @@
 # CONFIG_CPU_DCACHE_DISABLE is not set
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
 CONFIG_CPU_HAS_PMU=y
 # CONFIG_ARM_ERRATA_411920 is not set
 CONFIG_ARM_VIC=y
 CONFIG_ARM_VIC_NR=2
+CONFIG_PL330=y
 
 #
 # Bus support
@@ -326,6 +336,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x20800000,8M console=ttySAC1,115200 init=/linuxrc"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -471,6 +482,7 @@
 CONFIG_INPUT_TOUCHSCREEN=y
 # CONFIG_TOUCHSCREEN_AD7879 is not set
 # CONFIG_TOUCHSCREEN_DYNAPRO is not set
+# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
 # CONFIG_TOUCHSCREEN_FUJITSU is not set
 # CONFIG_TOUCHSCREEN_GUNZE is not set
 # CONFIG_TOUCHSCREEN_ELO is not set
@@ -525,6 +537,8 @@
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -624,10 +638,6 @@
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
-
-#
-# TI VLYNQ
-#
 # CONFIG_STAGING is not set
 
 #
@@ -836,6 +846,7 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -846,6 +857,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
diff --git a/arch/arm/configs/s5pc100_defconfig b/arch/arm/configs/s5pc100_defconfig
index 2053be6..ebc6245 100644
--- a/arch/arm/configs/s5pc100_defconfig
+++ b/arch/arm/configs/s5pc100_defconfig
@@ -1,12 +1,14 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.30
-# Wed Jul  1 15:53:07 2009
+# Linux kernel version: 2.6.34
+# Wed May 26 19:04:35 2010
 #
 CONFIG_ARM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
-CONFIG_MMU=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
+CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
 CONFIG_STACKTRACE_SUPPORT=y
@@ -18,7 +20,9 @@
 CONFIG_RWSEM_GENERIC_SPINLOCK=y
 CONFIG_GENERIC_HWEIGHT=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+CONFIG_ARM_L1_CACHE_SHIFT_6=y
 CONFIG_VECTORS_BASE=0xffff0000
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 CONFIG_CONSTRUCTORS=y
@@ -31,6 +35,13 @@
 CONFIG_INIT_ENV_ARG_LIMIT=32
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_KERNEL_GZIP=y
+# CONFIG_KERNEL_BZIP2 is not set
+# CONFIG_KERNEL_LZMA is not set
+# CONFIG_KERNEL_LZO is not set
 CONFIG_SWAP=y
 # CONFIG_SYSVIPC is not set
 # CONFIG_BSD_PROCESS_ACCT is not set
@@ -38,14 +49,15 @@
 #
 # RCU Subsystem
 #
-CONFIG_CLASSIC_RCU=y
-# CONFIG_TREE_RCU is not set
-# CONFIG_PREEMPT_RCU is not set
+CONFIG_TREE_RCU=y
+# CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_TINY_RCU is not set
+# CONFIG_RCU_TRACE is not set
+CONFIG_RCU_FANOUT=32
+# CONFIG_RCU_FANOUT_EXACT is not set
 # CONFIG_TREE_RCU_TRACE is not set
-# CONFIG_PREEMPT_RCU_TRACE is not set
 # CONFIG_IKCONFIG is not set
 CONFIG_LOG_BUF_SHIFT=17
-# CONFIG_GROUP_SCHED is not set
 # CONFIG_CGROUPS is not set
 CONFIG_SYSFS_DEPRECATED=y
 CONFIG_SYSFS_DEPRECATED_V2=y
@@ -59,6 +71,7 @@
 CONFIG_RD_GZIP=y
 CONFIG_RD_BZIP2=y
 CONFIG_RD_LZMA=y
+CONFIG_RD_LZO=y
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 CONFIG_SYSCTL=y
 CONFIG_ANON_INODES=y
@@ -80,19 +93,21 @@
 CONFIG_EVENTFD=y
 CONFIG_SHMEM=y
 CONFIG_AIO=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_PERF_USE_VMALLOC=y
 
 #
-# Performance Counters
+# Kernel Performance Events And Counters
 #
+# CONFIG_PERF_EVENTS is not set
+# CONFIG_PERF_COUNTERS is not set
 CONFIG_VM_EVENT_COUNTERS=y
 CONFIG_SLUB_DEBUG=y
-# CONFIG_STRIP_ASM_SYMS is not set
 CONFIG_COMPAT_BRK=y
 # CONFIG_SLAB is not set
 CONFIG_SLUB=y
 # CONFIG_SLOB is not set
 # CONFIG_PROFILING is not set
-# CONFIG_MARKERS is not set
 CONFIG_HAVE_OPROFILE=y
 # CONFIG_KPROBES is not set
 CONFIG_HAVE_KPROBES=y
@@ -122,25 +137,56 @@
 # IO Schedulers
 #
 CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_AS=y
 CONFIG_IOSCHED_DEADLINE=y
 CONFIG_IOSCHED_CFQ=y
-# CONFIG_DEFAULT_AS is not set
 # CONFIG_DEFAULT_DEADLINE is not set
 CONFIG_DEFAULT_CFQ=y
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="cfq"
+# CONFIG_INLINE_SPIN_TRYLOCK is not set
+# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK is not set
+# CONFIG_INLINE_SPIN_LOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_SPIN_UNLOCK is not set
+# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
+# CONFIG_INLINE_SPIN_UNLOCK_IRQ is not set
+# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_READ_TRYLOCK is not set
+# CONFIG_INLINE_READ_LOCK is not set
+# CONFIG_INLINE_READ_LOCK_BH is not set
+# CONFIG_INLINE_READ_LOCK_IRQ is not set
+# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_READ_UNLOCK is not set
+# CONFIG_INLINE_READ_UNLOCK_BH is not set
+# CONFIG_INLINE_READ_UNLOCK_IRQ is not set
+# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_WRITE_TRYLOCK is not set
+# CONFIG_INLINE_WRITE_LOCK is not set
+# CONFIG_INLINE_WRITE_LOCK_BH is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_WRITE_UNLOCK is not set
+# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
+# CONFIG_INLINE_WRITE_UNLOCK_IRQ is not set
+# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
+# CONFIG_MUTEX_SPIN_ON_OWNER is not set
 # CONFIG_FREEZER is not set
 
 #
 # System Type
 #
+CONFIG_MMU=y
 # CONFIG_ARCH_AAEC2000 is not set
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
+# CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -156,6 +202,7 @@
 # CONFIG_ARCH_IXP2000 is not set
 # CONFIG_ARCH_IXP4XX is not set
 # CONFIG_ARCH_L7200 is not set
+# CONFIG_ARCH_DOVE is not set
 # CONFIG_ARCH_KIRKWOOD is not set
 # CONFIG_ARCH_LOKI is not set
 # CONFIG_ARCH_MV78XX0 is not set
@@ -164,39 +211,64 @@
 # CONFIG_ARCH_KS8695 is not set
 # CONFIG_ARCH_NS9XXX is not set
 # CONFIG_ARCH_W90X900 is not set
+# CONFIG_ARCH_NUC93X is not set
 # CONFIG_ARCH_PNX4008 is not set
 # CONFIG_ARCH_PXA is not set
 # CONFIG_ARCH_MSM is not set
+# CONFIG_ARCH_SHMOBILE is not set
 # CONFIG_ARCH_RPC is not set
 # CONFIG_ARCH_SA1100 is not set
 # CONFIG_ARCH_S3C2410 is not set
 # CONFIG_ARCH_S3C64XX is not set
+# CONFIG_ARCH_S5P6440 is not set
+# CONFIG_ARCH_S5P6442 is not set
 CONFIG_ARCH_S5PC100=y
+# CONFIG_ARCH_S5PV210 is not set
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
 # CONFIG_ARCH_U300 is not set
+# CONFIG_ARCH_U8500 is not set
+# CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
-CONFIG_PLAT_S3C=y
+# CONFIG_PLAT_SPEAR is not set
+CONFIG_PLAT_SAMSUNG=y
 
 #
 # Boot options
 #
 # CONFIG_S3C_BOOT_ERROR_RESET is not set
 CONFIG_S3C_BOOT_UART_FORCE_FIFO=y
+CONFIG_S3C_LOWLEVEL_UART_PORT=0
+CONFIG_SAMSUNG_CLKSRC=y
+CONFIG_SAMSUNG_IRQ_VIC_TIMER=y
+CONFIG_SAMSUNG_IRQ_UART=y
+CONFIG_SAMSUNG_GPIOLIB_4BIT=y
+CONFIG_S3C_GPIO_CFG_S3C24XX=y
+CONFIG_S3C_GPIO_CFG_S3C64XX=y
+CONFIG_S3C_GPIO_PULL_UPDOWN=y
+CONFIG_S5P_GPIO_DRVSTR=y
+CONFIG_SAMSUNG_GPIO_EXTRA=0
+CONFIG_S3C_GPIO_SPACE=0
+CONFIG_S3C_GPIO_TRACK=y
+# CONFIG_S3C_ADC is not set
+CONFIG_S3C_DEV_HSMMC=y
+CONFIG_S3C_DEV_HSMMC1=y
+CONFIG_S3C_DEV_HSMMC2=y
+CONFIG_S3C_DEV_I2C1=y
+CONFIG_S3C_DEV_FB=y
+CONFIG_S3C_PL330_DMA=y
 
 #
 # Power management
 #
-CONFIG_S3C_LOWLEVEL_UART_PORT=0
-CONFIG_S3C_GPIO_SPACE=0
-CONFIG_S3C_GPIO_TRACK=y
-CONFIG_S3C_GPIO_PULL_UPDOWN=y
-CONFIG_PLAT_S5PC1XX=y
-CONFIG_CPU_S5PC100_INIT=y
-CONFIG_CPU_S5PC100_CLOCK=y
-CONFIG_S5PC100_SETUP_I2C0=y
+CONFIG_PLAT_S5P=y
+CONFIG_S5P_EXT_INT=y
 CONFIG_CPU_S5PC100=y
+CONFIG_S5PC100_SETUP_FB_24BPP=y
+CONFIG_S5PC100_SETUP_I2C1=y
+CONFIG_S5PC100_SETUP_SDHCI=y
+CONFIG_S5PC100_SETUP_SDHCI_GPIO=y
 CONFIG_MACH_SMDKC100=y
 
 #
@@ -206,7 +278,7 @@
 CONFIG_CPU_V7=y
 CONFIG_CPU_32v7=y
 CONFIG_CPU_ABRT_EV7=y
-CONFIG_CPU_PABRT_IFAR=y
+CONFIG_CPU_PABRT_V7=y
 CONFIG_CPU_CACHE_V7=y
 CONFIG_CPU_CACHE_VIPT=y
 CONFIG_CPU_COPY_V6=y
@@ -224,11 +296,15 @@
 # CONFIG_CPU_DCACHE_DISABLE is not set
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_HAS_TLS_REG=y
+CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
+CONFIG_CPU_HAS_PMU=y
 # CONFIG_ARM_ERRATA_430973 is not set
 # CONFIG_ARM_ERRATA_458693 is not set
 # CONFIG_ARM_ERRATA_460075 is not set
 CONFIG_ARM_VIC=y
 CONFIG_ARM_VIC_NR=2
+CONFIG_PL330=y
 
 #
 # Bus support
@@ -244,8 +320,11 @@
 # CONFIG_VMSPLIT_2G is not set
 # CONFIG_VMSPLIT_1G is not set
 CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
 # CONFIG_PREEMPT is not set
 CONFIG_HZ=100
+# CONFIG_THUMB2_KERNEL is not set
 CONFIG_AEABI=y
 CONFIG_OABI_COMPAT=y
 # CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
@@ -258,12 +337,11 @@
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 CONFIG_PAGEFLAGS_EXTENDED=y
-CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_SPLIT_PTLOCK_CPUS=999999
 # CONFIG_PHYS_ADDR_T_64BIT is not set
 CONFIG_ZONE_DMA_FLAG=0
 CONFIG_VIRT_TO_BUS=y
-CONFIG_HAVE_MLOCK=y
-CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+# CONFIG_KSM is not set
 CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
 CONFIG_ALIGNMENT_TRAP=y
 # CONFIG_UACCESS_WITH_MEMCPY is not set
@@ -274,6 +352,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_CMDLINE="root=/dev/mtdblock2 rootfstype=cramfs init=/linuxrc console=ttySAC2,115200 mem=128M"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -317,6 +396,7 @@
 # Generic Driver Options
 #
 CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+# CONFIG_DEVTMPFS is not set
 CONFIG_STANDALONE=y
 CONFIG_PREVENT_FIRMWARE_BUILD=y
 CONFIG_FW_LOADER=y
@@ -331,6 +411,10 @@
 # CONFIG_BLK_DEV_COW_COMMON is not set
 CONFIG_BLK_DEV_LOOP=y
 # CONFIG_BLK_DEV_CRYPTOLOOP is not set
+
+#
+# DRBD disabled because PROC_FS, INET or CONNECTOR not selected
+#
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=16
 CONFIG_BLK_DEV_RAM_SIZE=8192
@@ -338,9 +422,12 @@
 # CONFIG_CDROM_PKTCDVD is not set
 # CONFIG_MG_DISK is not set
 CONFIG_MISC_DEVICES=y
+# CONFIG_AD525X_DPOT is not set
 # CONFIG_ICS932S401 is not set
 # CONFIG_ENCLOSURE_SERVICES is not set
 # CONFIG_ISL29003 is not set
+# CONFIG_SENSORS_TSL2550 is not set
+# CONFIG_DS1682 is not set
 # CONFIG_C2PORT is not set
 
 #
@@ -350,18 +437,21 @@
 # CONFIG_EEPROM_LEGACY is not set
 # CONFIG_EEPROM_MAX6875 is not set
 # CONFIG_EEPROM_93CX6 is not set
+# CONFIG_IWMC3200TOP is not set
 CONFIG_HAVE_IDE=y
 # CONFIG_IDE is not set
 
 #
 # SCSI device support
 #
+CONFIG_SCSI_MOD=y
 # CONFIG_RAID_ATTRS is not set
 # CONFIG_SCSI is not set
 # CONFIG_SCSI_DMA is not set
 # CONFIG_SCSI_NETLINK is not set
 # CONFIG_ATA is not set
 # CONFIG_MD is not set
+# CONFIG_PHONE is not set
 
 #
 # Input device support
@@ -369,6 +459,7 @@
 CONFIG_INPUT=y
 # CONFIG_INPUT_FF_MEMLESS is not set
 # CONFIG_INPUT_POLLDEV is not set
+# CONFIG_INPUT_SPARSEKMAP is not set
 
 #
 # Userland interfaces
@@ -385,13 +476,19 @@
 # Input Device Drivers
 #
 CONFIG_INPUT_KEYBOARD=y
+# CONFIG_KEYBOARD_ADP5588 is not set
 CONFIG_KEYBOARD_ATKBD=y
-# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_QT2160 is not set
 # CONFIG_KEYBOARD_LKKBD is not set
-# CONFIG_KEYBOARD_XTKBD is not set
-# CONFIG_KEYBOARD_NEWTON is not set
-# CONFIG_KEYBOARD_STOWAWAY is not set
 # CONFIG_KEYBOARD_GPIO is not set
+# CONFIG_KEYBOARD_TCA6416 is not set
+# CONFIG_KEYBOARD_MATRIX is not set
+# CONFIG_KEYBOARD_MAX7359 is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_OPENCORES is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
 CONFIG_INPUT_MOUSE=y
 CONFIG_MOUSE_PS2=y
 CONFIG_MOUSE_PS2_ALPS=y
@@ -399,6 +496,7 @@
 CONFIG_MOUSE_PS2_SYNAPTICS=y
 CONFIG_MOUSE_PS2_TRACKPOINT=y
 # CONFIG_MOUSE_PS2_ELANTECH is not set
+# CONFIG_MOUSE_PS2_SENTELIC is not set
 # CONFIG_MOUSE_PS2_TOUCHKIT is not set
 # CONFIG_MOUSE_SERIAL is not set
 # CONFIG_MOUSE_APPLETOUCH is not set
@@ -418,6 +516,7 @@
 CONFIG_SERIO_SERPORT=y
 CONFIG_SERIO_LIBPS2=y
 # CONFIG_SERIO_RAW is not set
+# CONFIG_SERIO_ALTERA_PS2 is not set
 # CONFIG_GAMEPORT is not set
 
 #
@@ -444,11 +543,16 @@
 # Non-8250 serial port support
 #
 CONFIG_SERIAL_SAMSUNG=y
-CONFIG_SERIAL_SAMSUNG_UARTS=3
+CONFIG_SERIAL_SAMSUNG_UARTS_4=y
+CONFIG_SERIAL_SAMSUNG_UARTS=4
 # CONFIG_SERIAL_SAMSUNG_DEBUG is not set
 CONFIG_SERIAL_SAMSUNG_CONSOLE=y
+CONFIG_SERIAL_S3C6400=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -461,6 +565,7 @@
 # CONFIG_TCG_TPM is not set
 CONFIG_I2C=y
 CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_COMPAT=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_HELPER_AUTO=y
 
@@ -471,9 +576,11 @@
 #
 # I2C system bus drivers (mostly embedded / system-on-chip)
 #
+# CONFIG_I2C_DESIGNWARE is not set
 # CONFIG_I2C_GPIO is not set
 # CONFIG_I2C_OCORES is not set
 # CONFIG_I2C_SIMTEC is not set
+# CONFIG_I2C_XILINX is not set
 
 #
 # External I2C/SMBus adapter drivers
@@ -486,20 +593,15 @@
 #
 # CONFIG_I2C_PCA_PLATFORM is not set
 # CONFIG_I2C_STUB is not set
-
-#
-# Miscellaneous I2C Chip support
-#
-# CONFIG_DS1682 is not set
-# CONFIG_SENSORS_PCF8574 is not set
-# CONFIG_PCF8575 is not set
-# CONFIG_SENSORS_PCA9539 is not set
-# CONFIG_SENSORS_TSL2550 is not set
 # CONFIG_I2C_DEBUG_CORE is not set
 # CONFIG_I2C_DEBUG_ALGO is not set
 # CONFIG_I2C_DEBUG_BUS is not set
-# CONFIG_I2C_DEBUG_CHIP is not set
 # CONFIG_SPI is not set
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
 CONFIG_ARCH_REQUIRE_GPIOLIB=y
 CONFIG_GPIOLIB=y
 # CONFIG_DEBUG_GPIO is not set
@@ -508,13 +610,16 @@
 #
 # Memory mapped GPIO expanders:
 #
+# CONFIG_GPIO_IT8761E is not set
 
 #
 # I2C GPIO expanders:
 #
+# CONFIG_GPIO_MAX7300 is not set
 # CONFIG_GPIO_MAX732X is not set
 # CONFIG_GPIO_PCA953X is not set
 # CONFIG_GPIO_PCF857X is not set
+# CONFIG_GPIO_ADP5588 is not set
 
 #
 # PCI GPIO expanders:
@@ -523,10 +628,19 @@
 #
 # SPI GPIO expanders:
 #
+
+#
+# AC97 GPIO expanders:
+#
 # CONFIG_W1 is not set
 # CONFIG_POWER_SUPPLY is not set
 CONFIG_HWMON=y
 # CONFIG_HWMON_VID is not set
+# CONFIG_HWMON_DEBUG_CHIP is not set
+
+#
+# Native drivers
+#
 # CONFIG_SENSORS_AD7414 is not set
 # CONFIG_SENSORS_AD7418 is not set
 # CONFIG_SENSORS_ADM1021 is not set
@@ -535,10 +649,11 @@
 # CONFIG_SENSORS_ADM1029 is not set
 # CONFIG_SENSORS_ADM1031 is not set
 # CONFIG_SENSORS_ADM9240 is not set
+# CONFIG_SENSORS_ADT7411 is not set
 # CONFIG_SENSORS_ADT7462 is not set
 # CONFIG_SENSORS_ADT7470 is not set
-# CONFIG_SENSORS_ADT7473 is not set
 # CONFIG_SENSORS_ADT7475 is not set
+# CONFIG_SENSORS_ASC7621 is not set
 # CONFIG_SENSORS_ATXP1 is not set
 # CONFIG_SENSORS_DS1621 is not set
 # CONFIG_SENSORS_F71805F is not set
@@ -549,6 +664,7 @@
 # CONFIG_SENSORS_GL520SM is not set
 # CONFIG_SENSORS_IT87 is not set
 # CONFIG_SENSORS_LM63 is not set
+# CONFIG_SENSORS_LM73 is not set
 # CONFIG_SENSORS_LM75 is not set
 # CONFIG_SENSORS_LM77 is not set
 # CONFIG_SENSORS_LM78 is not set
@@ -573,8 +689,10 @@
 # CONFIG_SENSORS_SMSC47M192 is not set
 # CONFIG_SENSORS_SMSC47B397 is not set
 # CONFIG_SENSORS_ADS7828 is not set
+# CONFIG_SENSORS_AMC6821 is not set
 # CONFIG_SENSORS_THMC50 is not set
 # CONFIG_SENSORS_TMP401 is not set
+# CONFIG_SENSORS_TMP421 is not set
 # CONFIG_SENSORS_VT1211 is not set
 # CONFIG_SENSORS_W83781D is not set
 # CONFIG_SENSORS_W83791D is not set
@@ -584,9 +702,8 @@
 # CONFIG_SENSORS_W83L786NG is not set
 # CONFIG_SENSORS_W83627HF is not set
 # CONFIG_SENSORS_W83627EHF is not set
-# CONFIG_HWMON_DEBUG_CHIP is not set
+# CONFIG_SENSORS_LIS3_I2C is not set
 # CONFIG_THERMAL is not set
-# CONFIG_THERMAL_HWMON is not set
 # CONFIG_WATCHDOG is not set
 CONFIG_SSB_POSSIBLE=y
 
@@ -599,10 +716,12 @@
 # Multifunction device drivers
 #
 # CONFIG_MFD_CORE is not set
+# CONFIG_MFD_88PM860X is not set
 # CONFIG_MFD_SM501 is not set
 # CONFIG_MFD_ASIC3 is not set
 # CONFIG_HTC_EGPIO is not set
 # CONFIG_HTC_PASIC3 is not set
+# CONFIG_HTC_I2CPLD is not set
 # CONFIG_TPS65010 is not set
 # CONFIG_TWL4030_CORE is not set
 # CONFIG_MFD_TMIO is not set
@@ -610,10 +729,15 @@
 # CONFIG_MFD_TC6387XB is not set
 # CONFIG_MFD_TC6393XB is not set
 # CONFIG_PMIC_DA903X is not set
+# CONFIG_PMIC_ADP5520 is not set
+# CONFIG_MFD_MAX8925 is not set
 # CONFIG_MFD_WM8400 is not set
+# CONFIG_MFD_WM831X is not set
 # CONFIG_MFD_WM8350_I2C is not set
+# CONFIG_MFD_WM8994 is not set
 # CONFIG_MFD_PCF50633 is not set
 # CONFIG_AB3100_CORE is not set
+# CONFIG_REGULATOR is not set
 # CONFIG_MEDIA_SUPPORT is not set
 
 #
@@ -637,7 +761,6 @@
 # CONFIG_SOUND is not set
 CONFIG_HID_SUPPORT=y
 CONFIG_HID=y
-CONFIG_HID_DEBUG=y
 # CONFIG_HIDRAW is not set
 # CONFIG_HID_PID is not set
 
@@ -680,13 +803,12 @@
 CONFIG_MMC_SDHCI=y
 # CONFIG_MMC_SDHCI_PLTFM is not set
 # CONFIG_MEMSTICK is not set
-# CONFIG_ACCESSIBILITY is not set
 # CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
 CONFIG_RTC_LIB=y
 # CONFIG_RTC_CLASS is not set
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
-# CONFIG_REGULATOR is not set
 # CONFIG_UIO is not set
 # CONFIG_STAGING is not set
 
@@ -710,6 +832,7 @@
 # CONFIG_XFS_FS is not set
 # CONFIG_GFS2_FS is not set
 # CONFIG_BTRFS_FS is not set
+# CONFIG_NILFS2_FS is not set
 CONFIG_FILE_LOCKING=y
 CONFIG_FSNOTIFY=y
 CONFIG_DNOTIFY=y
@@ -758,6 +881,7 @@
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
 # CONFIG_EFS_FS is not set
+# CONFIG_LOGFS is not set
 CONFIG_CRAMFS=y
 # CONFIG_SQUASHFS is not set
 # CONFIG_VXFS_FS is not set
@@ -772,7 +896,6 @@
 CONFIG_ROMFS_ON_BLOCK=y
 # CONFIG_SYSV_FS is not set
 # CONFIG_UFS_FS is not set
-# CONFIG_NILFS2_FS is not set
 
 #
 # Partition Types
@@ -789,6 +912,7 @@
 CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_FRAME_WARN=1024
 CONFIG_MAGIC_SYSRQ=y
+# CONFIG_STRIP_ASM_SYMS is not set
 # CONFIG_UNUSED_SYMBOLS is not set
 # CONFIG_DEBUG_FS is not set
 # CONFIG_HEADERS_CHECK is not set
@@ -826,11 +950,13 @@
 # CONFIG_DEBUG_LIST is not set
 # CONFIG_DEBUG_SG is not set
 # CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
 # CONFIG_BOOT_PRINTK_DELAY is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 # CONFIG_RCU_CPU_STALL_DETECTOR is not set
 # CONFIG_BACKTRACE_SELF_TEST is not set
 # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
 # CONFIG_FAULT_INJECTION is not set
 # CONFIG_LATENCYTOP is not set
 CONFIG_SYSCTL_SYSCALL_CHECK=y
@@ -839,6 +965,7 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -849,6 +976,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
@@ -857,8 +985,9 @@
 CONFIG_DEBUG_ERRORS=y
 # CONFIG_DEBUG_STACK_USAGE is not set
 CONFIG_DEBUG_LL=y
+# CONFIG_EARLY_PRINTK is not set
 # CONFIG_DEBUG_ICEDCC is not set
-CONFIG_DEBUG_S3C_PORT=y
+# CONFIG_OC_ETM is not set
 CONFIG_DEBUG_S3C_UART=0
 
 #
@@ -867,7 +996,11 @@
 # CONFIG_KEYS is not set
 # CONFIG_SECURITY is not set
 # CONFIG_SECURITYFS is not set
-# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+# CONFIG_DEFAULT_SECURITY_SELINUX is not set
+# CONFIG_DEFAULT_SECURITY_SMACK is not set
+# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
 # CONFIG_CRYPTO is not set
 # CONFIG_BINARY_PRINTF is not set
 
@@ -884,8 +1017,10 @@
 # CONFIG_CRC7 is not set
 # CONFIG_LIBCRC32C is not set
 CONFIG_ZLIB_INFLATE=y
+CONFIG_LZO_DECOMPRESS=y
 CONFIG_DECOMPRESS_GZIP=y
 CONFIG_DECOMPRESS_BZIP2=y
 CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DECOMPRESS_LZO=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_DMA=y
diff --git a/arch/arm/configs/s5pc110_defconfig b/arch/arm/configs/s5pc110_defconfig
index 796cb78..c4de360 100644
--- a/arch/arm/configs/s5pc110_defconfig
+++ b/arch/arm/configs/s5pc110_defconfig
@@ -1,11 +1,13 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.34
-# Sat May 22 03:18:21 2010
+# Wed May 26 19:04:37 2010
 #
 CONFIG_ARM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -35,6 +37,7 @@
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_BZIP2 is not set
@@ -180,9 +183,11 @@
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -218,7 +223,7 @@
 # CONFIG_ARCH_S3C64XX is not set
 # CONFIG_ARCH_S5P6440 is not set
 # CONFIG_ARCH_S5P6442 is not set
-# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_S5PC100 is not set
 CONFIG_ARCH_S5PV210=y
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
@@ -227,6 +232,7 @@
 # CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
+# CONFIG_PLAT_SPEAR is not set
 CONFIG_PLAT_SAMSUNG=y
 
 #
@@ -242,16 +248,22 @@
 CONFIG_S3C_GPIO_CFG_S3C24XX=y
 CONFIG_S3C_GPIO_CFG_S3C64XX=y
 CONFIG_S3C_GPIO_PULL_UPDOWN=y
+CONFIG_S5P_GPIO_DRVSTR=y
 CONFIG_SAMSUNG_GPIO_EXTRA=0
 CONFIG_S3C_GPIO_SPACE=0
 CONFIG_S3C_GPIO_TRACK=y
 # CONFIG_S3C_ADC is not set
+CONFIG_S3C_DEV_WDT=y
+CONFIG_S3C_PL330_DMA=y
 
 #
 # Power management
 #
 CONFIG_PLAT_S5P=y
+CONFIG_S5P_EXT_INT=y
 CONFIG_CPU_S5PV210=y
+# CONFIG_MACH_AQUILA is not set
+# CONFIG_MACH_GONI is not set
 # CONFIG_MACH_SMDKV210 is not set
 CONFIG_MACH_SMDKC110=y
 
@@ -281,12 +293,14 @@
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_HAS_TLS_REG=y
 CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
 CONFIG_CPU_HAS_PMU=y
 # CONFIG_ARM_ERRATA_430973 is not set
 # CONFIG_ARM_ERRATA_458693 is not set
 # CONFIG_ARM_ERRATA_460075 is not set
 CONFIG_ARM_VIC=y
 CONFIG_ARM_VIC_NR=2
+CONFIG_PL330=y
 
 #
 # Bus support
@@ -335,6 +349,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x20800000,8M console=ttySAC1,115200 init=/linuxrc"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -481,6 +496,7 @@
 CONFIG_INPUT_TOUCHSCREEN=y
 # CONFIG_TOUCHSCREEN_AD7879 is not set
 # CONFIG_TOUCHSCREEN_DYNAPRO is not set
+# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
 # CONFIG_TOUCHSCREEN_FUJITSU is not set
 # CONFIG_TOUCHSCREEN_GUNZE is not set
 # CONFIG_TOUCHSCREEN_ELO is not set
@@ -536,6 +552,8 @@
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -583,6 +601,7 @@
 # CONFIG_HWMON is not set
 # CONFIG_THERMAL is not set
 # CONFIG_WATCHDOG is not set
+CONFIG_HAVE_S3C2410_WATCHDOG=y
 CONFIG_SSB_POSSIBLE=y
 
 #
@@ -635,10 +654,6 @@
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
-
-#
-# TI VLYNQ
-#
 # CONFIG_STAGING is not set
 
 #
@@ -847,6 +862,8 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -857,6 +874,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
diff --git a/arch/arm/configs/s5pv210_defconfig b/arch/arm/configs/s5pv210_defconfig
index 6831dab..e2f5bce 100644
--- a/arch/arm/configs/s5pv210_defconfig
+++ b/arch/arm/configs/s5pv210_defconfig
@@ -1,11 +1,13 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.34
-# Sat May 22 03:18:22 2010
+# Wed May 26 19:04:39 2010
 #
 CONFIG_ARM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
 CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_TIME=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
 CONFIG_HAVE_PROC_CPU=y
 CONFIG_NO_IOPORT=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -35,6 +37,7 @@
 CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
 CONFIG_HAVE_KERNEL_LZO=y
 CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_BZIP2 is not set
@@ -180,9 +183,11 @@
 # CONFIG_ARCH_INTEGRATOR is not set
 # CONFIG_ARCH_REALVIEW is not set
 # CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_VEXPRESS is not set
 # CONFIG_ARCH_AT91 is not set
 # CONFIG_ARCH_BCMRING is not set
 # CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CNS3XXX is not set
 # CONFIG_ARCH_GEMINI is not set
 # CONFIG_ARCH_EBSA110 is not set
 # CONFIG_ARCH_EP93XX is not set
@@ -218,7 +223,7 @@
 # CONFIG_ARCH_S3C64XX is not set
 # CONFIG_ARCH_S5P6440 is not set
 # CONFIG_ARCH_S5P6442 is not set
-# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_S5PC100 is not set
 CONFIG_ARCH_S5PV210=y
 # CONFIG_ARCH_SHARK is not set
 # CONFIG_ARCH_LH7A40X is not set
@@ -227,6 +232,7 @@
 # CONFIG_ARCH_NOMADIK is not set
 # CONFIG_ARCH_DAVINCI is not set
 # CONFIG_ARCH_OMAP is not set
+# CONFIG_PLAT_SPEAR is not set
 CONFIG_PLAT_SAMSUNG=y
 
 #
@@ -242,16 +248,24 @@
 CONFIG_S3C_GPIO_CFG_S3C24XX=y
 CONFIG_S3C_GPIO_CFG_S3C64XX=y
 CONFIG_S3C_GPIO_PULL_UPDOWN=y
+CONFIG_S5P_GPIO_DRVSTR=y
 CONFIG_SAMSUNG_GPIO_EXTRA=0
 CONFIG_S3C_GPIO_SPACE=0
 CONFIG_S3C_GPIO_TRACK=y
 # CONFIG_S3C_ADC is not set
+CONFIG_S3C_DEV_WDT=y
+CONFIG_SAMSUNG_DEV_ADC=y
+CONFIG_SAMSUNG_DEV_TS=y
+CONFIG_S3C_PL330_DMA=y
 
 #
 # Power management
 #
 CONFIG_PLAT_S5P=y
+CONFIG_S5P_EXT_INT=y
 CONFIG_CPU_S5PV210=y
+# CONFIG_MACH_AQUILA is not set
+# CONFIG_MACH_GONI is not set
 CONFIG_MACH_SMDKV210=y
 # CONFIG_MACH_SMDKC110 is not set
 
@@ -281,12 +295,14 @@
 # CONFIG_CPU_BPREDICT_DISABLE is not set
 CONFIG_HAS_TLS_REG=y
 CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_DMA_MEM_BUFFERABLE=y
 CONFIG_CPU_HAS_PMU=y
 # CONFIG_ARM_ERRATA_430973 is not set
 # CONFIG_ARM_ERRATA_458693 is not set
 # CONFIG_ARM_ERRATA_460075 is not set
 CONFIG_ARM_VIC=y
 CONFIG_ARM_VIC_NR=2
+CONFIG_PL330=y
 
 #
 # Bus support
@@ -335,6 +351,7 @@
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x20800000,8M console=ttySAC1,115200 init=/linuxrc"
+# CONFIG_CMDLINE_FORCE is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 
@@ -481,7 +498,9 @@
 CONFIG_INPUT_TOUCHSCREEN=y
 # CONFIG_TOUCHSCREEN_AD7879 is not set
 # CONFIG_TOUCHSCREEN_DYNAPRO is not set
+# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
 # CONFIG_TOUCHSCREEN_FUJITSU is not set
+# CONFIG_TOUCHSCREEN_S3C2410 is not set
 # CONFIG_TOUCHSCREEN_GUNZE is not set
 # CONFIG_TOUCHSCREEN_ELO is not set
 # CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
@@ -536,6 +555,8 @@
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
 # CONFIG_SERIAL_TIMBERDALE is not set
+# CONFIG_SERIAL_ALTERA_JTAGUART is not set
+# CONFIG_SERIAL_ALTERA_UART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
 CONFIG_LEGACY_PTYS=y
@@ -583,6 +604,7 @@
 # CONFIG_HWMON is not set
 # CONFIG_THERMAL is not set
 # CONFIG_WATCHDOG is not set
+CONFIG_HAVE_S3C2410_WATCHDOG=y
 CONFIG_SSB_POSSIBLE=y
 
 #
@@ -635,10 +657,6 @@
 # CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
-
-#
-# TI VLYNQ
-#
 # CONFIG_STAGING is not set
 
 #
@@ -847,6 +865,8 @@
 CONFIG_TRACING_SUPPORT=y
 CONFIG_FTRACE=y
 # CONFIG_FUNCTION_TRACER is not set
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_ENABLE_DEFAULT_TRACERS is not set
 # CONFIG_BOOT_TRACER is not set
@@ -857,6 +877,7 @@
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
 # CONFIG_SAMPLES is not set
 CONFIG_HAVE_ARCH_KGDB=y
 # CONFIG_KGDB is not set
diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h
index bcda59f..2f87870 100644
--- a/arch/arm/include/asm/scatterlist.h
+++ b/arch/arm/include/asm/scatterlist.h
@@ -3,9 +3,6 @@
 
 #include <asm/memory.h>
 #include <asm/types.h>
-
 #include <asm-generic/scatterlist.h>
 
-#undef ARCH_HAS_SG_CHAIN
-
 #endif /* _ASMARM_SCATTERLIST_H */
diff --git a/arch/arm/mach-davinci/include/mach/mmc.h b/arch/arm/mach-davinci/include/mach/mmc.h
index 5a85e24..d4f1e96 100644
--- a/arch/arm/mach-davinci/include/mach/mmc.h
+++ b/arch/arm/mach-davinci/include/mach/mmc.h
@@ -22,6 +22,9 @@
 
 	/* Version of the MMC/SD controller */
 	u8	version;
+
+	/* Number of sg segments */
+	u8	nr_sg;
 };
 void davinci_setup_mmc(int module, struct davinci_mmc_config *config);
 
diff --git a/arch/arm/mach-mx3/mach-mx31moboard.c b/arch/arm/mach-mx3/mach-mx31moboard.c
index 33a8d35..62b5e40 100644
--- a/arch/arm/mach-mx3/mach-mx31moboard.c
+++ b/arch/arm/mach-mx3/mach-mx31moboard.c
@@ -220,11 +220,54 @@
 	},
 };
 
+static struct mc13783_led_platform_data moboard_led[] = {
+	{
+		.id = MC13783_LED_R1,
+		.name = "coreboard-led-4:red",
+		.max_current = 2,
+	},
+	{
+		.id = MC13783_LED_G1,
+		.name = "coreboard-led-4:green",
+		.max_current = 2,
+	},
+	{
+		.id = MC13783_LED_B1,
+		.name = "coreboard-led-4:blue",
+		.max_current = 2,
+	},
+	{
+		.id = MC13783_LED_R2,
+		.name = "coreboard-led-5:red",
+		.max_current = 3,
+	},
+	{
+		.id = MC13783_LED_G2,
+		.name = "coreboard-led-5:green",
+		.max_current = 3,
+	},
+	{
+		.id = MC13783_LED_B2,
+		.name = "coreboard-led-5:blue",
+		.max_current = 3,
+	},
+};
+
+static struct mc13783_leds_platform_data moboard_leds = {
+	.num_leds = ARRAY_SIZE(moboard_led),
+	.led = moboard_led,
+	.flags = MC13783_LED_SLEWLIMTC,
+	.abmode = MC13783_LED_AB_DISABLED,
+	.tc1_period = MC13783_LED_PERIOD_10MS,
+	.tc2_period = MC13783_LED_PERIOD_10MS,
+};
+
 static struct mc13783_platform_data moboard_pmic = {
 	.regulators = moboard_regulators,
 	.num_regulators = ARRAY_SIZE(moboard_regulators),
+	.leds = &moboard_leds,
 	.flags = MC13783_USE_REGULATOR | MC13783_USE_RTC |
-		MC13783_USE_ADC,
+		MC13783_USE_ADC | MC13783_USE_LED,
 };
 
 static struct spi_board_info moboard_spi_board_info[] __initdata = {
diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index e7d629b..f474a80 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -137,9 +137,7 @@
 	}
 
 	gpio_direction_input(ts_gpio);
-
-	omap_set_gpio_debounce(ts_gpio, 1);
-	omap_set_gpio_debounce_time(ts_gpio, 0xa);
+	gpio_set_debounce(ts_gpio, 310);
 }
 
 static int ads7846_get_pendown_state(void)
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 5fcb52e..fefd7e6 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -209,8 +209,7 @@
 	}
 
 	gpio_direction_input(ts_gpio);
-	omap_set_gpio_debounce(ts_gpio, 1);
-	omap_set_gpio_debounce_time(ts_gpio, 0xa);
+	gpio_set_debounce(ts_gpio, 310);
 }
 
 static int ads7846_get_pendown_state(void)
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 81bba19..b952610 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -579,9 +579,7 @@
 		printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 
 	gpio_direction_input(OMAP3_EVM_TS_GPIO);
-
-	omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
-	omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
+	gpio_set_debounce(OMAP3_EVM_TS_GPIO, 310);
 }
 
 static int ads7846_get_pendown_state(void)
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 395d049..db06dc9 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -130,8 +130,8 @@
 static void __init pandora_keys_gpio_init(void)
 {
 	/* set debounce time for GPIO banks 4 and 6 */
-	omap_set_gpio_debounce_time(32 * 3, GPIO_DEBOUNCE_TIME);
-	omap_set_gpio_debounce_time(32 * 5, GPIO_DEBOUNCE_TIME);
+	gpio_set_debounce(32 * 3, GPIO_DEBOUNCE_TIME);
+	gpio_set_debounce(32 * 5, GPIO_DEBOUNCE_TIME);
 }
 
 static int board_keymap[] = {
diff --git a/arch/arm/mach-omap2/board-omap3touchbook.c b/arch/arm/mach-omap2/board-omap3touchbook.c
index 2504d41..2f5f823 100644
--- a/arch/arm/mach-omap2/board-omap3touchbook.c
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -328,8 +328,7 @@
 	}
 
 	gpio_direction_input(OMAP3_TS_GPIO);
-	omap_set_gpio_debounce(OMAP3_TS_GPIO, 1);
-	omap_set_gpio_debounce_time(OMAP3_TS_GPIO, 0xa);
+	gpio_set_debounce(OMAP3_TS_GPIO, 310);
 }
 
 static struct ads7846_platform_data ads7846_config = {
diff --git a/arch/arm/mach-orion5x/dns323-setup.c b/arch/arm/mach-orion5x/dns323-setup.c
index 685f34a..fe0de16 100644
--- a/arch/arm/mach-orion5x/dns323-setup.c
+++ b/arch/arm/mach-orion5x/dns323-setup.c
@@ -240,22 +240,23 @@
 
 #define ORION_BLINK_HALF_PERIOD 100 /* ms */
 
-static int dns323_gpio_blink_set(unsigned gpio,
+static int dns323_gpio_blink_set(unsigned gpio, int state,
 	unsigned long *delay_on, unsigned long *delay_off)
 {
-	static int value = 0;
 
-	if (!*delay_on && !*delay_off)
+	if (delay_on && delay_off && !*delay_on && !*delay_off)
 		*delay_on = *delay_off = ORION_BLINK_HALF_PERIOD;
 
-	if (ORION_BLINK_HALF_PERIOD == *delay_on
-	    && ORION_BLINK_HALF_PERIOD == *delay_off) {
-		value = !value;
-		orion_gpio_set_blink(gpio, value);
-		return 0;
+	switch(state) {
+	case GPIO_LED_NO_BLINK_LOW:
+	case GPIO_LED_NO_BLINK_HIGH:
+		orion_gpio_set_blink(gpio, 0);
+		gpio_set_value(gpio, state);
+		break;
+	case GPIO_LED_BLINK:
+		orion_gpio_set_blink(gpio, 1);
 	}
-
-	return -EINVAL;
+	return 0;
 }
 
 static struct gpio_led dns323_leds[] = {
@@ -263,6 +264,7 @@
 		.name = "power:blue",
 		.gpio = DNS323_GPIO_LED_POWER2,
 		.default_trigger = "timer",
+		.active_low = 1,
 	}, {
 		.name = "right:amber",
 		.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
index 45799c6..9e39faa 100644
--- a/arch/arm/mach-s3c2440/mach-gta02.c
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
@@ -49,7 +49,6 @@
 #include <linux/io.h>
 
 #include <linux/i2c.h>
-#include <linux/backlight.h>
 #include <linux/regulator/machine.h>
 
 #include <linux/mfd/pcf50633/core.h>
@@ -57,6 +56,7 @@
 #include <linux/mfd/pcf50633/adc.h>
 #include <linux/mfd/pcf50633/gpio.h>
 #include <linux/mfd/pcf50633/pmic.h>
+#include <linux/mfd/pcf50633/backlight.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -254,6 +254,12 @@
 	"battery",
 };
 
+static struct pcf50633_bl_platform_data gta02_backlight_data = {
+	.default_brightness = 0x3f,
+	.default_brightness_limit = 0,
+	.ramp_time = 5,
+};
+
 struct pcf50633_platform_data gta02_pcf_pdata = {
 	.resumers = {
 		[0] =	PCF50633_INT1_USBINS |
@@ -271,6 +277,8 @@
 
 	.charger_reference_current_ma = 1000,
 
+	.backlight_data = &gta02_backlight_data,
+
 	.reg_init_data = {
 		[PCF50633_REGULATOR_AUTO] = {
 			.constraints = {
@@ -478,71 +486,6 @@
 
 };
 
-
-
-static void gta02_bl_set_intensity(int intensity)
-{
-	struct pcf50633 *pcf = gta02_pcf;
-	int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
-
-	/* We map 8-bit intensity to 6-bit intensity in hardware. */
-	intensity >>= 2;
-
-	/*
-	 * This can happen during, eg, print of panic on blanked console,
-	 * but we can't service i2c without interrupts active, so abort.
-	 */
-	if (in_atomic()) {
-		printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n");
-		return;
-	}
-
-	old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
-	if (intensity == old_intensity)
-		return;
-
-	/* We can't do this anywhere else. */
-	pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);
-
-	if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
-		old_intensity = 0;
-
-	/*
-	 * The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
-	 * if seen, you have to re-enable the LED unit.
-	 */
-	if (!intensity || !old_intensity)
-		pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);
-
-	/* Illegal to set LEDOUT to 0. */
-	if (!intensity)
-		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2);
-	else
-		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
-					  intensity);
-
-	if (intensity)
-		pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);
-
-}
-
-static struct generic_bl_info gta02_bl_info = {
-	.name			= "gta02-bl",
-	.max_intensity		= 0xff,
-	.default_intensity	= 0xff,
-	.set_bl_intensity	= gta02_bl_set_intensity,
-};
-
-static struct platform_device gta02_bl_dev = {
-	.name			= "generic-bl",
-	.id			= 1,
-	.dev = {
-		.platform_data = &gta02_bl_info,
-	},
-};
-
-
-
 /* USB */
 static struct s3c2410_hcd_info gta02_usb_info __initdata = {
 	.port[0]	= {
@@ -579,7 +522,6 @@
 /* These guys DO need to be children of PMU. */
 
 static struct platform_device *gta02_devices_pmu_children[] = {
-	&gta02_bl_dev,
 };
 
 
diff --git a/arch/arm/mach-s3c64xx/clock.c b/arch/arm/mach-s3c64xx/clock.c
index 7a4138b..fbd85a9 100644
--- a/arch/arm/mach-s3c64xx/clock.c
+++ b/arch/arm/mach-s3c64xx/clock.c
@@ -259,6 +259,12 @@
 		.enable		= s3c64xx_hclk_ctrl,
 		.ctrlbit	= S3C_CLKCON_HCLK_HSMMC2,
 	}, {
+		.name		= "otg",
+		.id		= -1,
+		.parent		= &clk_h,
+		.enable		= s3c64xx_hclk_ctrl,
+		.ctrlbit	= S3C_CLKCON_HCLK_USB,
+	}, {
 		.name		= "timers",
 		.id		= -1,
 		.parent		= &clk_p,
diff --git a/arch/arm/mach-s5p6440/include/mach/irqs.h b/arch/arm/mach-s5p6440/include/mach/irqs.h
index a4b9b40..911854d9 100644
--- a/arch/arm/mach-s5p6440/include/mach/irqs.h
+++ b/arch/arm/mach-s5p6440/include/mach/irqs.h
@@ -72,7 +72,14 @@
 #define S5P_IRQ_EINT_BASE	(S5P_IRQ_VIC1(31) + 6)
 
 #define S5P_EINT(x)		((x) + S5P_IRQ_EINT_BASE)
-#define IRQ_EINT(x)		S5P_EINT(x)
+
+#define S5P_EINT_BASE1		(S5P_IRQ_EINT_BASE)
+/*
+ * S5P6440 has 0-15 external interrupts in group 0. Only these can be used
+ * to wake up from sleep. If request is beyond this range, by mistake, a large
+ * return value for an irq number should be indication of something amiss.
+ */
+#define S5P_EINT_BASE2		(0xf0000000)
 
 /*
  * Next the external interrupt groups. These are similar to the IRQ_EINT(x)
diff --git a/arch/arm/mach-s5p6442/include/mach/irqs.h b/arch/arm/mach-s5p6442/include/mach/irqs.h
index da66580..02c2374 100644
--- a/arch/arm/mach-s5p6442/include/mach/irqs.h
+++ b/arch/arm/mach-s5p6442/include/mach/irqs.h
@@ -77,8 +77,9 @@
 
 #define S5P_IRQ_EINT_BASE	(IRQ_VIC_END + 1)
 
-#define IRQ_EINT(x)             ((x) < 16 ? S5P_IRQ_VIC0(x) : \
-					(S5P_IRQ_EINT_BASE + (x)-16))
+#define S5P_EINT_BASE1		(S5P_IRQ_VIC0(0))
+#define S5P_EINT_BASE2		(S5P_IRQ_EINT_BASE)
+
 /* Set the default NR_IRQS */
 
 #define NR_IRQS 		(IRQ_EINT(31) + 1)
diff --git a/arch/arm/mach-s5pc100/include/mach/irqs.h b/arch/arm/mach-s5pc100/include/mach/irqs.h
index 15066df..28aa551 100644
--- a/arch/arm/mach-s5pc100/include/mach/irqs.h
+++ b/arch/arm/mach-s5pc100/include/mach/irqs.h
@@ -100,9 +100,6 @@
 #define S5P_EINT_BASE1		(S5P_IRQ_VIC0(0))
 #define S5P_EINT_BASE2		(IRQ_VIC_END + 1)
 
-#define IRQ_EINT(x)		((x) < 16 ? S5P_IRQ_VIC0(x) : \
-				 (S5P_EINT_BASE2 + (x) - 16))
-
 #define S3C_IRQ_GPIO_BASE	(IRQ_EINT(31) + 1)
 #define S3C_IRQ_GPIO(x)		(S3C_IRQ_GPIO_BASE + (x))
 
diff --git a/arch/arm/mach-s5pc100/include/mach/regs-gpio.h b/arch/arm/mach-s5pc100/include/mach/regs-gpio.h
index 763edebd..dd6295e 100644
--- a/arch/arm/mach-s5pc100/include/mach/regs-gpio.h
+++ b/arch/arm/mach-s5pc100/include/mach/regs-gpio.h
@@ -60,12 +60,9 @@
 #define S5PC100EINT30PEND		(S5P_VA_GPIO + 0xF40)
 #define S5P_EINT_PEND(x)		(S5PC100EINT30PEND + ((x) * 0x4))
 
-#define eint_offset(irq) ((irq) < IRQ_EINT16_31 ? ((irq) - IRQ_EINT(0)) : \
-			  (((irq) - S5P_EINT_BASE2)))
+#define EINT_REG_NR(x)			(EINT_OFFSET(x) >> 3)
 
-#define EINT_REG_NR(x)			(eint_offset(x) >> 3)
-
-#define eint_irq_to_bit(irq)		(1 << (eint_offset(irq) & 0x7))
+#define eint_irq_to_bit(irq)		(1 << (EINT_OFFSET(irq) & 0x7))
 
 /* values for S5P_EXTINT0 */
 #define S5P_EXTINT_LOWLEV		(0x00)
diff --git a/arch/arm/mach-s5pv210/include/mach/irqs.h b/arch/arm/mach-s5pv210/include/mach/irqs.h
index 92fc6c7..9689537 100644
--- a/arch/arm/mach-s5pv210/include/mach/irqs.h
+++ b/arch/arm/mach-s5pv210/include/mach/irqs.h
@@ -118,22 +118,12 @@
 #define IRQ_MDNIE3		S5P_IRQ_VIC3(8)
 #define IRQ_VIC_END		S5P_IRQ_VIC3(31)
 
-#define S5P_EINT_16_31_BASE	(IRQ_VIC_END + 1)
-
-#define EINT_MODE		S3C_GPIO_SFN(0xf)
-
-#define IRQ_EINT(x)		((x) < 16 ? ((x) + S5P_IRQ_VIC0(0)) \
-					: ((x) + S5P_EINT_16_31_BASE))
+#define S5P_EINT_BASE1		(S5P_IRQ_VIC0(0))
+#define S5P_EINT_BASE2		(IRQ_VIC_END + 1)
 
 /* Set the default NR_IRQS */
-
 #define NR_IRQS			(IRQ_EINT(31) + 1)
 
-#define EINT_GPIO_0(x)		S5PV210_GPH0(x)
-#define EINT_GPIO_1(x)		S5PV210_GPH1(x)
-#define EINT_GPIO_2(x)		S5PV210_GPH2(x)
-#define EINT_GPIO_3(x)		S5PV210_GPH3(x)
-
 /* Compatibility */
 #define IRQ_LCD_FIFO		IRQ_LCD0
 #define IRQ_LCD_VSYNC		IRQ_LCD1
diff --git a/arch/arm/mach-s5pv210/include/mach/regs-gpio.h b/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
index 6d06809..49e029b 100644
--- a/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
+++ b/arch/arm/mach-s5pv210/include/mach/regs-gpio.h
@@ -27,12 +27,9 @@
 #define S5PV210_EINT30PEND		(S5P_VA_GPIO + 0xF40)
 #define S5P_EINT_PEND(x)		(S5PV210_EINT30PEND + ((x) * 0x4))
 
-#define eint_offset(irq)	((irq) < IRQ_EINT16_31 ? ((irq) - IRQ_EINT(0)) \
-						: ((irq) - S5P_EINT_16_31_BASE))
+#define EINT_REG_NR(x)			(EINT_OFFSET(x) >> 3)
 
-#define EINT_REG_NR(x)			(eint_offset(x) >> 3)
-
-#define eint_irq_to_bit(irq)		(1 << (eint_offset(irq) & 0x7))
+#define eint_irq_to_bit(irq)		(1 << (EINT_OFFSET(irq) & 0x7))
 
 /* values for S5P_EXTINT0 */
 #define S5P_EXTINT_LOWLEV		(0x00)
@@ -41,4 +38,11 @@
 #define S5P_EXTINT_RISEEDGE		(0x03)
 #define S5P_EXTINT_BOTHEDGE		(0x04)
 
+#define EINT_MODE		S3C_GPIO_SFN(0xf)
+
+#define EINT_GPIO_0(x)		S5PV210_GPH0(x)
+#define EINT_GPIO_1(x)		S5PV210_GPH1(x)
+#define EINT_GPIO_2(x)		S5PV210_GPH2(x)
+#define EINT_GPIO_3(x)		S5PV210_GPH3(x)
+
 #endif /* __ASM_ARCH_REGS_GPIO_H */
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index dc2ac42..393e921 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -624,79 +624,58 @@
 	__raw_writel(l, base + reg); \
 } while(0)
 
-void omap_set_gpio_debounce(int gpio, int enable)
+/**
+ * _set_gpio_debounce - low level gpio debounce time
+ * @bank: the gpio bank we're acting upon
+ * @gpio: the gpio number on this @gpio
+ * @debounce: debounce time to use
+ *
+ * OMAP's debounce time is in 31us steps so we need
+ * to convert and round up to the closest unit.
+ */
+static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
+		unsigned debounce)
 {
-	struct gpio_bank *bank;
-	void __iomem *reg;
-	unsigned long flags;
-	u32 val, l = 1 << get_gpio_index(gpio);
+	void __iomem		*reg = bank->base;
+	u32			val;
+	u32			l;
 
-	if (cpu_class_is_omap1())
-		return;
-
-	bank = get_gpio_bank(gpio);
-	reg = bank->base;
-
-	if (cpu_is_omap44xx())
-		reg += OMAP4_GPIO_DEBOUNCENABLE;
+	if (debounce < 32)
+		debounce = 0x01;
+	else if (debounce > 7936)
+		debounce = 0xff;
 	else
-		reg += OMAP24XX_GPIO_DEBOUNCE_EN;
+		debounce = (debounce / 0x1f) - 1;
 
-	if (!(bank->mod_usage & l)) {
-		printk(KERN_ERR "GPIO %d not requested\n", gpio);
-		return;
-	}
-
-	spin_lock_irqsave(&bank->lock, flags);
-	val = __raw_readl(reg);
-
-	if (enable && !(val & l))
-		val |= l;
-	else if (!enable && (val & l))
-		val &= ~l;
-	else
-		goto done;
-
-	if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
-		bank->dbck_enable_mask = val;
-		if (enable)
-			clk_enable(bank->dbck);
-		else
-			clk_disable(bank->dbck);
-	}
-
-	__raw_writel(val, reg);
-done:
-	spin_unlock_irqrestore(&bank->lock, flags);
-}
-EXPORT_SYMBOL(omap_set_gpio_debounce);
-
-void omap_set_gpio_debounce_time(int gpio, int enc_time)
-{
-	struct gpio_bank *bank;
-	void __iomem *reg;
-
-	if (cpu_class_is_omap1())
-		return;
-
-	bank = get_gpio_bank(gpio);
-	reg = bank->base;
-
-	if (!bank->mod_usage) {
-		printk(KERN_ERR "GPIO not requested\n");
-		return;
-	}
-
-	enc_time &= 0xff;
+	l = 1 << get_gpio_index(gpio);
 
 	if (cpu_is_omap44xx())
 		reg += OMAP4_GPIO_DEBOUNCINGTIME;
 	else
 		reg += OMAP24XX_GPIO_DEBOUNCE_VAL;
 
-	__raw_writel(enc_time, reg);
+	__raw_writel(debounce, reg);
+
+	reg = bank->base;
+	if (cpu_is_omap44xx())
+		reg += OMAP4_GPIO_DEBOUNCENABLE;
+	else
+		reg += OMAP24XX_GPIO_DEBOUNCE_EN;
+
+	val = __raw_readl(reg);
+
+	if (debounce) {
+		val |= l;
+		if (cpu_is_omap34xx() || cpu_is_omap44xx())
+			clk_enable(bank->dbck);
+	} else {
+		val &= ~l;
+		if (cpu_is_omap34xx() || cpu_is_omap44xx())
+			clk_disable(bank->dbck);
+	}
+
+	__raw_writel(val, reg);
 }
-EXPORT_SYMBOL(omap_set_gpio_debounce_time);
 
 #ifdef CONFIG_ARCH_OMAP2PLUS
 static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio,
@@ -1656,6 +1635,20 @@
 	return 0;
 }
 
+static int gpio_debounce(struct gpio_chip *chip, unsigned offset,
+		unsigned debounce)
+{
+	struct gpio_bank *bank;
+	unsigned long flags;
+
+	bank = container_of(chip, struct gpio_bank, chip);
+	spin_lock_irqsave(&bank->lock, flags);
+	_set_gpio_debounce(bank, offset, debounce);
+	spin_unlock_irqrestore(&bank->lock, flags);
+
+	return 0;
+}
+
 static void gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
 	struct gpio_bank *bank;
@@ -1909,6 +1902,7 @@
 		bank->chip.direction_input = gpio_input;
 		bank->chip.get = gpio_get;
 		bank->chip.direction_output = gpio_output;
+		bank->chip.set_debounce = gpio_debounce;
 		bank->chip.set = gpio_set;
 		bank->chip.to_irq = gpio_2irq;
 		if (bank_is_mpuio(bank)) {
diff --git a/arch/arm/plat-s5p/Kconfig b/arch/arm/plat-s5p/Kconfig
index 5cb2dd1..11d6a1b 100644
--- a/arch/arm/plat-s5p/Kconfig
+++ b/arch/arm/plat-s5p/Kconfig
@@ -29,3 +29,4 @@
 	bool
 	help
 	  Use the external interrupts (other than GPIO interrupts.)
+	  Note: Do not choose this for S5P6440.
diff --git a/arch/arm/plat-s5p/clock.c b/arch/arm/plat-s5p/clock.c
index 24a931f..b5e2552 100644
--- a/arch/arm/plat-s5p/clock.c
+++ b/arch/arm/plat-s5p/clock.c
@@ -148,6 +148,7 @@
 	&clk_fout_vpll,
 	&clk_arm,
 	&clk_vpll,
+	&clk_xusbxti,
 };
 
 void __init s5p_register_clocks(unsigned long xtal_freq)
diff --git a/arch/arm/plat-s5p/include/plat/irqs.h b/arch/arm/plat-s5p/include/plat/irqs.h
index 9ff3d71..3fb3a3a 100644
--- a/arch/arm/plat-s5p/include/plat/irqs.h
+++ b/arch/arm/plat-s5p/include/plat/irqs.h
@@ -87,4 +87,11 @@
 #define IRQ_TIMER3		S5P_TIMER_IRQ(3)
 #define IRQ_TIMER4		S5P_TIMER_IRQ(4)
 
+#define IRQ_EINT(x)		((x) < 16 ? ((x) + S5P_EINT_BASE1) \
+					: ((x) - 16 + S5P_EINT_BASE2))
+
+#define EINT_OFFSET(irq)	((irq) < S5P_EINT_BASE2 ? \
+						((irq) - S5P_EINT_BASE1) : \
+						((irq) + 16 - S5P_EINT_BASE2))
+
 #endif /* __ASM_PLAT_S5P_IRQS_H */
diff --git a/arch/arm/plat-s5p/irq-eint.c b/arch/arm/plat-s5p/irq-eint.c
index eaa70aa..e56c807 100644
--- a/arch/arm/plat-s5p/irq-eint.c
+++ b/arch/arm/plat-s5p/irq-eint.c
@@ -60,7 +60,7 @@
 
 static int s5p_irq_eint_set_type(unsigned int irq, unsigned int type)
 {
-	int offs = eint_offset(irq);
+	int offs = EINT_OFFSET(irq);
 	int shift;
 	u32 ctrl, mask;
 	u32 newvalue = 0;
@@ -139,17 +139,16 @@
  */
 static inline void s5p_irq_demux_eint(unsigned int start)
 {
-	u32 status;
+	u32 status = __raw_readl(S5P_EINT_PEND(EINT_REG_NR(start)));
 	u32 mask = __raw_readl(S5P_EINT_MASK(EINT_REG_NR(start)));
 	unsigned int irq;
 
-	status = __raw_readl(S5P_EINT_PEND(EINT_REG_NR(start)));
 	status &= ~mask;
 	status &= 0xff;
 
 	while (status) {
-		irq = fls(status);
-		generic_handle_irq(irq - 1 + start);
+		irq = fls(status) - 1;
+		generic_handle_irq(irq + start);
 		status &= ~(1 << irq);
 	}
 }
@@ -162,12 +161,18 @@
 
 static inline void s5p_irq_vic_eint_mask(unsigned int irq)
 {
+	void __iomem *base = get_irq_chip_data(irq);
+
 	s5p_irq_eint_mask(irq);
+	writel(1 << EINT_OFFSET(irq), base + VIC_INT_ENABLE_CLEAR);
 }
 
 static void s5p_irq_vic_eint_unmask(unsigned int irq)
 {
+	void __iomem *base = get_irq_chip_data(irq);
+
 	s5p_irq_eint_unmask(irq);
+	writel(1 << EINT_OFFSET(irq), base + VIC_INT_ENABLE);
 }
 
 static inline void s5p_irq_vic_eint_ack(unsigned int irq)
diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
index 34efdd2..db4112c 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h
@@ -43,6 +43,11 @@
  * layouts. Provide an point to vector control routine and provide any
  * per-bank configuration information that other systems such as the
  * external interrupt code will need.
+ *
+ * @sa s3c_gpio_cfgpin
+ * @sa s3c_gpio_getcfg
+ * @sa s3c_gpio_setpull
+ * @sa s3c_gpio_getpull
  */
 struct s3c_gpio_cfg {
 	unsigned int	cfg_eint;
@@ -70,11 +75,25 @@
 /**
  * s3c_gpio_cfgpin() - Change the GPIO function of a pin.
  * @pin pin The pin number to configure.
- * @pin to The configuration for the pin's function.
+ * @to to The configuration for the pin's function.
  *
  * Configure which function is actually connected to the external
  * pin, such as an gpio input, output or some form of special function
  * connected to an internal peripheral block.
+ *
+ * The @to parameter can be one of the generic S3C_GPIO_INPUT, S3C_GPIO_OUTPUT
+ * or S3C_GPIO_SFN() to indicate one of the possible values that the helper
+ * will then generate the correct bit mask and shift for the configuration.
+ *
+ * If a bank of GPIOs all needs to be set to special-function 2, then
+ * the following code will work:
+ *
+ *	for (gpio = start; gpio < end; gpio++)
+ *		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
+ *
+ * The @to parameter can also be a specific value already shifted to the
+ * correct position in the control register, although these are discouraged
+ * in newer kernels and are only being kept for compatibility.
  */
 extern int s3c_gpio_cfgpin(unsigned int pin, unsigned int to);
 
@@ -108,6 +127,8 @@
  * This function sets the state of the pull-{up,down} resistor for the
  * specified pin. It will return 0 if successfull, or a negative error
  * code if the pin cannot support the requested pull setting.
+ *
+ * @pull is one of S3C_GPIO_PULL_NONE, S3C_GPIO_PULL_DOWN or S3C_GPIO_PULL_UP.
 */
 extern int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull);
 
diff --git a/arch/avr32/include/asm/scatterlist.h b/arch/avr32/include/asm/scatterlist.h
index 377320e..06394e5 100644
--- a/arch/avr32/include/asm/scatterlist.h
+++ b/arch/avr32/include/asm/scatterlist.h
@@ -1,25 +1,7 @@
 #ifndef __ASM_AVR32_SCATTERLIST_H
 #define __ASM_AVR32_SCATTERLIST_H
 
-#include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-   unsigned long	sg_magic;
-#endif
-    unsigned long	page_link;
-    unsigned int	offset;
-    dma_addr_t		dma_address;
-    unsigned int	length;
-};
-
-/* These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns.
- */
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->length)
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0xffffffff)
 
diff --git a/arch/blackfin/include/asm/scatterlist.h b/arch/blackfin/include/asm/scatterlist.h
index 04f4487..64d41d3 100644
--- a/arch/blackfin/include/asm/scatterlist.h
+++ b/arch/blackfin/include/asm/scatterlist.h
@@ -1,27 +1,7 @@
 #ifndef _BLACKFIN_SCATTERLIST_H
 #define _BLACKFIN_SCATTERLIST_H
 
-#include <linux/mm.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	unsigned long page_link;
-	unsigned int offset;
-	dma_addr_t dma_address;
-	unsigned int length;
-};
-
-/*
- * These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns, or alternatively stop on the first sg_dma_len(sg) which
- * is 0.
- */
-#define sg_dma_address(sg)      ((sg)->dma_address)
-#define sg_dma_len(sg)          ((sg)->length)
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD	(0xffffffff)
 
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index 43eb969..6ec7768 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -292,28 +292,6 @@
 			break;
 		}
 
-#ifdef CONFIG_BINFMT_ELF_FDPIC
-	case PTRACE_GETFDPIC: {
-		unsigned long tmp = 0;
-
-		switch (addr) {
-		case_PTRACE_GETFDPIC_EXEC:
-		case PTRACE_GETFDPIC_EXEC:
-			tmp = child->mm->context.exec_fdpic_loadmap;
-			break;
-		case_PTRACE_GETFDPIC_INTERP:
-		case PTRACE_GETFDPIC_INTERP:
-			tmp = child->mm->context.interp_fdpic_loadmap;
-			break;
-		default:
-			break;
-		}
-
-		ret = put_user(tmp, datap);
-		break;
-	}
-#endif
-
 		/* when I and D space are separate, this will have to be fixed. */
 	case PTRACE_POKEDATA:
 		pr_debug("ptrace: PTRACE_PEEKDATA\n");
@@ -357,8 +335,14 @@
 	case PTRACE_PEEKUSR:
 		switch (addr) {
 #ifdef CONFIG_BINFMT_ELF_FDPIC	/* backwards compat */
-		case PT_FDPIC_EXEC:   goto case_PTRACE_GETFDPIC_EXEC;
-		case PT_FDPIC_INTERP: goto case_PTRACE_GETFDPIC_INTERP;
+		case PT_FDPIC_EXEC:
+			request = PTRACE_GETFDPIC;
+			addr = PTRACE_GETFDPIC_EXEC;
+			goto case_default;
+		case PT_FDPIC_INTERP:
+			request = PTRACE_GETFDPIC;
+			addr = PTRACE_GETFDPIC_INTERP;
+			goto case_default;
 #endif
 		default:
 			ret = get_reg(child, addr, datap);
@@ -385,6 +369,7 @@
 					     0, sizeof(struct pt_regs),
 					     (const void __user *)data);
 
+	case_default:
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;
diff --git a/arch/cris/include/asm/scatterlist.h b/arch/cris/include/asm/scatterlist.h
index faff53a..249a784 100644
--- a/arch/cris/include/asm/scatterlist.h
+++ b/arch/cris/include/asm/scatterlist.h
@@ -1,22 +1,7 @@
 #ifndef __ASM_CRIS_SCATTERLIST_H
 #define __ASM_CRIS_SCATTERLIST_H
 
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	char *  address;    /* Location data is to be transferred to */
-	unsigned int length;
-
-	/* The following is i386 highmem junk - not used by us */
-	unsigned long page_link;
-	unsigned int offset;/* for highmem, page offset */
-
-};
-
-#define sg_dma_address(sg)	((sg)->address)
-#define sg_dma_len(sg)		((sg)->length)
-/* i386 junk */
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0x1fffffff)
 
diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h
index 7dc0f0f..2797163 100644
--- a/arch/frv/include/asm/cache.h
+++ b/arch/frv/include/asm/cache.h
@@ -17,8 +17,6 @@
 #define L1_CACHE_SHIFT		(CONFIG_FRV_L1_CACHE_SHIFT)
 #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
 
-#define ARCH_KMALLOC_MINALIGN	L1_CACHE_BYTES
-
 #define __cacheline_aligned	__attribute__((aligned(L1_CACHE_BYTES)))
 #define ____cacheline_aligned	__attribute__((aligned(L1_CACHE_BYTES)))
 
diff --git a/arch/frv/include/asm/mem-layout.h b/arch/frv/include/asm/mem-layout.h
index 2947764..ccae981 100644
--- a/arch/frv/include/asm/mem-layout.h
+++ b/arch/frv/include/asm/mem-layout.h
@@ -35,8 +35,8 @@
  * the slab must be aligned such that load- and store-double instructions don't
  * fault if used
  */
-#define	ARCH_KMALLOC_MINALIGN		8
-#define	ARCH_SLAB_MINALIGN		8
+#define	ARCH_KMALLOC_MINALIGN		L1_CACHE_BYTES
+#define	ARCH_SLAB_MINALIGN		L1_CACHE_BYTES
 
 /*****************************************************************************/
 /*
diff --git a/arch/frv/include/asm/scatterlist.h b/arch/frv/include/asm/scatterlist.h
index 4bca8a2..1614bfd 100644
--- a/arch/frv/include/asm/scatterlist.h
+++ b/arch/frv/include/asm/scatterlist.h
@@ -1,45 +1,7 @@
 #ifndef _ASM_SCATTERLIST_H
 #define _ASM_SCATTERLIST_H
 
-#include <asm/types.h>
-
-/*
- * Drivers must set either ->address or (preferred) page and ->offset
- * to indicate where data must be transferred to/from.
- *
- * Using page is recommended since it handles highmem data as well as
- * low mem. ->address is restricted to data which has a virtual mapping, and
- * it will go away in the future. Updating to page can be automated very
- * easily -- something like
- *
- * sg->address = some_ptr;
- *
- * can be rewritten as
- *
- * sg_set_buf(sg, some_ptr, length);
- *
- * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
- */
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long	sg_magic;
-#endif
-	unsigned long	page_link;
-	unsigned int	offset;		/* for highmem, page offset */
-
-	dma_addr_t	dma_address;
-	unsigned int	length;
-};
-
-/*
- * These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns, or alternatively stop on the first sg_dma_len(sg) which
- * is 0.
- */
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->length)
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0xffffffffUL)
 
diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c
index 60eeed3..fac0289 100644
--- a/arch/frv/kernel/ptrace.c
+++ b/arch/frv/kernel/ptrace.c
@@ -344,26 +344,6 @@
 					     0, sizeof(child->thread.user->f),
 					     (const void __user *)data);
 
-	case PTRACE_GETFDPIC:
-		tmp = 0;
-		switch (addr) {
-		case PTRACE_GETFDPIC_EXEC:
-			tmp = child->mm->context.exec_fdpic_loadmap;
-			break;
-		case PTRACE_GETFDPIC_INTERP:
-			tmp = child->mm->context.interp_fdpic_loadmap;
-			break;
-		default:
-			break;
-		}
-
-		ret = 0;
-		if (put_user(tmp, (unsigned long *) data)) {
-			ret = -EFAULT;
-			break;
-		}
-		break;
-
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;
diff --git a/arch/frv/kernel/sysctl.c b/arch/frv/kernel/sysctl.c
index 71abd15..6c155d6 100644
--- a/arch/frv/kernel/sysctl.c
+++ b/arch/frv/kernel/sysctl.c
@@ -46,8 +46,9 @@
 /*
  * handle requests to dynamically switch the write caching mode delivered by /proc
  */
-static int procctl_frv_cachemode(ctl_table *table, int write, struct file *filp,
-				 void __user *buffer, size_t *lenp, loff_t *ppos)
+static int procctl_frv_cachemode(ctl_table *table, int write,
+				 void __user *buffer, size_t *lenp,
+				 loff_t *ppos)
 {
 	unsigned long hsr0;
 	char buff[8];
@@ -84,7 +85,7 @@
 	}
 
 	/* read the state */
-	if (filp->f_pos > 0) {
+	if (*ppos > 0) {
 		*lenp = 0;
 		return 0;
 	}
@@ -110,7 +111,7 @@
 		return -EFAULT;
 
 	*lenp = len;
-	filp->f_pos = len;
+	*ppos = len;
 	return 0;
 
 } /* end procctl_frv_cachemode() */
@@ -120,8 +121,9 @@
  * permit the mm_struct the nominated process is using have its MMU context ID pinned
  */
 #ifdef CONFIG_MMU
-static int procctl_frv_pin_cxnr(ctl_table *table, int write, struct file *filp,
-				void __user *buffer, size_t *lenp, loff_t *ppos)
+static int procctl_frv_pin_cxnr(ctl_table *table, int write,
+				void __user *buffer, size_t *lenp,
+				loff_t *ppos)
 {
 	pid_t pid;
 	char buff[16], *p;
@@ -150,7 +152,7 @@
 	}
 
 	/* read the currently pinned CXN */
-	if (filp->f_pos > 0) {
+	if (*ppos > 0) {
 		*lenp = 0;
 		return 0;
 	}
@@ -163,7 +165,7 @@
 		return -EFAULT;
 
 	*lenp = len;
-	filp->f_pos = len;
+	*ppos = len;
 	return 0;
 
 } /* end procctl_frv_pin_cxnr() */
diff --git a/arch/h8300/include/asm/scatterlist.h b/arch/h8300/include/asm/scatterlist.h
index d3ecdd8..de08a4a 100644
--- a/arch/h8300/include/asm/scatterlist.h
+++ b/arch/h8300/include/asm/scatterlist.h
@@ -1,17 +1,7 @@
 #ifndef _H8300_SCATTERLIST_H
 #define _H8300_SCATTERLIST_H
 
-#include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long	sg_magic;
-#endif
-	unsigned long	page_link;
-	unsigned int	offset;
-	dma_addr_t	dma_address;
-	unsigned int	length;
-};
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD	(0xffffffff)
 
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 9676100..9561082 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -56,6 +56,9 @@
 config NEED_DMA_MAP_STATE
 	def_bool y
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config SWIOTLB
        bool
 
@@ -495,6 +498,14 @@
 	def_bool y
 	depends on NUMA
 
+config USE_PERCPU_NUMA_NODE_ID
+	def_bool y
+	depends on NUMA
+
+config HAVE_MEMORYLESS_NODES
+	def_bool y
+	depends on NUMA
+
 config ARCH_PROC_KCORE_TEXT
 	def_bool y
 	depends on PROC_KCORE
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 21adbd7..837dc82 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -94,7 +94,6 @@
 #define acpi_noirq 0	/* ACPI always enabled on IA64 */
 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
 #define acpi_strict 1	/* no ACPI spec workarounds on IA64 */
-#define acpi_ht 0	/* no HT-only mode on IA64 */
 #endif
 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
 static inline void disable_acpi(void) { }
diff --git a/arch/ia64/include/asm/scatterlist.h b/arch/ia64/include/asm/scatterlist.h
index d8e9896..f299a4f 100644
--- a/arch/ia64/include/asm/scatterlist.h
+++ b/arch/ia64/include/asm/scatterlist.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_IA64_SCATTERLIST_H
 #define _ASM_IA64_SCATTERLIST_H
 
+#include <asm-generic/scatterlist.h>
 /*
  * It used to be that ISA_DMA_THRESHOLD had something to do with the
  * DMA-limits of ISA-devices.  Nowadays, its only remaining use (apart
@@ -10,7 +11,6 @@
  * that's 4GB - 1.
  */
 #define ISA_DMA_THRESHOLD	0xffffffff
-
-#include <asm-generic/scatterlist.h>
+#define ARCH_HAS_SG_CHAIN
 
 #endif /* _ASM_IA64_SCATTERLIST_H */
diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index d323071..09f6467 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -26,11 +26,6 @@
 #define RECLAIM_DISTANCE 15
 
 /*
- * Returns the number of the node containing CPU 'cpu'
- */
-#define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
-
-/*
  * Returns a bitmask of CPUs on Node 'node'.
  */
 #define cpumask_of_node(node) ((node) == -1 ?				\
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index 3095654..d9485d9 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -31,8 +31,6 @@
 	.unmap_sg = swiotlb_unmap_sg_attrs,
 	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
 	.sync_single_for_device = swiotlb_sync_single_for_device,
-	.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
-	.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
 	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
 	.sync_sg_for_device = swiotlb_sync_sg_for_device,
 	.dma_supported = swiotlb_dma_supported,
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 0dec7f7..7c7909f 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -638,7 +638,7 @@
 	 */
 
 	read_lock(&tasklist_lock);
-	if (child->signal) {
+	if (child->sighand) {
 		spin_lock_irq(&child->sighand->siglock);
 		if (child->state == TASK_STOPPED &&
 		    !test_and_set_tsk_thread_flag(child, TIF_RESTORE_RSE)) {
@@ -662,7 +662,7 @@
 	 * job control stop, so that SIGCONT can be used to wake it up.
 	 */
 	read_lock(&tasklist_lock);
-	if (child->signal) {
+	if (child->sighand) {
 		spin_lock_irq(&child->sighand->siglock);
 		if (child->state == TASK_TRACED &&
 		    (child->signal->flags & SIGNAL_STOP_STOPPED)) {
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index e5230b2..6a1380e 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -390,6 +390,14 @@
 
 	fix_b0_for_bsp();
 
+#ifdef CONFIG_NUMA
+	/*
+	 * numa_node_id() works after this.
+	 */
+	set_numa_node(cpu_to_node_map[cpuid]);
+	set_numa_mem(local_memory_node(cpu_to_node_map[cpuid]));
+#endif
+
 	ipi_call_lock_irq();
 	spin_lock(&vector_lock);
 	/* Setup the per cpu irq handling data structures */
@@ -632,6 +640,9 @@
 {
 	cpu_set(smp_processor_id(), cpu_online_map);
 	cpu_set(smp_processor_id(), cpu_callin_map);
+#ifdef CONFIG_NUMA
+	set_numa_node(cpu_to_node_map[smp_processor_id()]);
+#endif
 	per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
 	paravirt_post_smp_prepare_boot_cpu();
 }
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index 3efea7d..2437718 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/bootmem.h>
 #include <linux/module.h>
+#include <linux/random.h>
 #include <asm/mmzone.h>
 #include <asm/numa.h>
 
@@ -50,6 +51,22 @@
 	return (i < num_node_memblks) ? node_memblk[i].nid : (num_node_memblks ? -1 : 0);
 }
 
+/*
+ * Return the bit number of a random bit set in the nodemask.
+ *   (returns -1 if nodemask is empty)
+ */
+int __node_random(const nodemask_t *maskp)
+{
+	int w, bit = -1;
+
+	w = nodes_weight(*maskp);
+	if (w)
+		bit = bitmap_ord_to_pos(maskp->bits,
+			get_random_int() % w, MAX_NUMNODES);
+	return bit;
+}
+EXPORT_SYMBOL(__node_random);
+
 #if defined(CONFIG_SPARSEMEM) && defined(CONFIG_NUMA)
 /*
  * Because of holes evaluate on section limits.
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 64aff52..aa2533a 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -335,8 +335,11 @@
 }
 
 struct pci_bus * __devinit
-pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
+pci_acpi_scan_root(struct acpi_pci_root *root)
 {
+	struct acpi_device *device = root->device;
+	int domain = root->segment;
+	int bus = root->secondary.start;
 	struct pci_controller *controller;
 	unsigned int windows = 0;
 	struct pci_bus *pbus;
diff --git a/arch/m32r/include/asm/scatterlist.h b/arch/m32r/include/asm/scatterlist.h
index 1ed372c..aeeddd8 100644
--- a/arch/m32r/include/asm/scatterlist.h
+++ b/arch/m32r/include/asm/scatterlist.h
@@ -1,20 +1,7 @@
 #ifndef _ASM_M32R_SCATTERLIST_H
 #define _ASM_M32R_SCATTERLIST_H
 
-#include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-    unsigned long sg_magic;
-#endif
-    char *  address;    /* Location data is to be transferred to, NULL for
-                         * highmem page */
-    unsigned long page_link;
-    unsigned int offset;/* for highmem, page offset */
-
-    dma_addr_t dma_address;
-    unsigned int length;
-};
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0x1fffffff)
 
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index b5da298..2e3737b 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -7,6 +7,7 @@
 	default y
 	select HAVE_AOUT
 	select HAVE_IDE
+	select GENERIC_ATOMIC64
 
 config MMU
 	bool
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index d2cc35d..b1577f7 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c
@@ -97,10 +97,6 @@
 static void amiga_get_hardware_list(struct seq_file *m);
 /* amiga specific timer functions */
 static unsigned long amiga_gettimeoffset(void);
-static int a3000_hwclk(int, struct rtc_time *);
-static int a2000_hwclk(int, struct rtc_time *);
-static int amiga_set_clock_mmss(unsigned long);
-static unsigned int amiga_get_ss(void);
 extern void amiga_mksound(unsigned int count, unsigned int ticks);
 static void amiga_reset(void);
 extern void amiga_init_sound(void);
@@ -138,10 +134,6 @@
 	}
 };
 
-static struct resource rtc_resource = {
-	.start = 0x00dc0000, .end = 0x00dcffff
-};
-
 static struct resource ram_resource[NUM_MEMINFO];
 
 
@@ -387,15 +379,6 @@
 	mach_get_model       = amiga_get_model;
 	mach_get_hardware_list = amiga_get_hardware_list;
 	mach_gettimeoffset   = amiga_gettimeoffset;
-	if (AMIGAHW_PRESENT(A3000_CLK)) {
-		mach_hwclk         = a3000_hwclk;
-		rtc_resource.name = "A3000 RTC";
-		request_resource(&iomem_resource, &rtc_resource);
-	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
-		mach_hwclk         = a2000_hwclk;
-		rtc_resource.name = "A2000 RTC";
-		request_resource(&iomem_resource, &rtc_resource);
-	}
 
 	/*
 	 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
@@ -404,8 +387,6 @@
 	 */
 	mach_max_dma_address = 0xffffffff;
 
-	mach_set_clock_mmss  = amiga_set_clock_mmss;
-	mach_get_ss          = amiga_get_ss;
 	mach_reset           = amiga_reset;
 #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
 	mach_beep            = amiga_mksound;
@@ -530,161 +511,6 @@
 	return ticks + offset;
 }
 
-static int a3000_hwclk(int op, struct rtc_time *t)
-{
-	tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
-
-	if (!op) { /* read */
-		t->tm_sec  = tod_3000.second1 * 10 + tod_3000.second2;
-		t->tm_min  = tod_3000.minute1 * 10 + tod_3000.minute2;
-		t->tm_hour = tod_3000.hour1   * 10 + tod_3000.hour2;
-		t->tm_mday = tod_3000.day1    * 10 + tod_3000.day2;
-		t->tm_wday = tod_3000.weekday;
-		t->tm_mon  = tod_3000.month1  * 10 + tod_3000.month2 - 1;
-		t->tm_year = tod_3000.year1   * 10 + tod_3000.year2;
-		if (t->tm_year <= 69)
-			t->tm_year += 100;
-	} else {
-		tod_3000.second1 = t->tm_sec / 10;
-		tod_3000.second2 = t->tm_sec % 10;
-		tod_3000.minute1 = t->tm_min / 10;
-		tod_3000.minute2 = t->tm_min % 10;
-		tod_3000.hour1   = t->tm_hour / 10;
-		tod_3000.hour2   = t->tm_hour % 10;
-		tod_3000.day1    = t->tm_mday / 10;
-		tod_3000.day2    = t->tm_mday % 10;
-		if (t->tm_wday != -1)
-			tod_3000.weekday = t->tm_wday;
-		tod_3000.month1  = (t->tm_mon + 1) / 10;
-		tod_3000.month2  = (t->tm_mon + 1) % 10;
-		if (t->tm_year >= 100)
-			t->tm_year -= 100;
-		tod_3000.year1   = t->tm_year / 10;
-		tod_3000.year2   = t->tm_year % 10;
-	}
-
-	tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
-
-	return 0;
-}
-
-static int a2000_hwclk(int op, struct rtc_time *t)
-{
-	int cnt = 5;
-
-	tod_2000.cntrl1 = TOD2000_CNTRL1_HOLD;
-
-	while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt) {
-		tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
-		udelay(70);
-		tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
-		--cnt;
-	}
-
-	if (!cnt)
-		printk(KERN_INFO "hwclk: timed out waiting for RTC (0x%x)\n",
-			tod_2000.cntrl1);
-
-	if (!op) { /* read */
-		t->tm_sec  = tod_2000.second1     * 10 + tod_2000.second2;
-		t->tm_min  = tod_2000.minute1     * 10 + tod_2000.minute2;
-		t->tm_hour = (tod_2000.hour1 & 3) * 10 + tod_2000.hour2;
-		t->tm_mday = tod_2000.day1        * 10 + tod_2000.day2;
-		t->tm_wday = tod_2000.weekday;
-		t->tm_mon  = tod_2000.month1      * 10 + tod_2000.month2 - 1;
-		t->tm_year = tod_2000.year1       * 10 + tod_2000.year2;
-		if (t->tm_year <= 69)
-			t->tm_year += 100;
-
-		if (!(tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)) {
-			if (!(tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour == 12)
-				t->tm_hour = 0;
-			else if ((tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour != 12)
-				t->tm_hour += 12;
-		}
-	} else {
-		tod_2000.second1 = t->tm_sec / 10;
-		tod_2000.second2 = t->tm_sec % 10;
-		tod_2000.minute1 = t->tm_min / 10;
-		tod_2000.minute2 = t->tm_min % 10;
-		if (tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)
-			tod_2000.hour1 = t->tm_hour / 10;
-		else if (t->tm_hour >= 12)
-			tod_2000.hour1 = TOD2000_HOUR1_PM +
-				(t->tm_hour - 12) / 10;
-		else
-			tod_2000.hour1 = t->tm_hour / 10;
-		tod_2000.hour2   = t->tm_hour % 10;
-		tod_2000.day1    = t->tm_mday / 10;
-		tod_2000.day2    = t->tm_mday % 10;
-		if (t->tm_wday != -1)
-			tod_2000.weekday = t->tm_wday;
-		tod_2000.month1  = (t->tm_mon + 1) / 10;
-		tod_2000.month2  = (t->tm_mon + 1) % 10;
-		if (t->tm_year >= 100)
-			t->tm_year -= 100;
-		tod_2000.year1   = t->tm_year / 10;
-		tod_2000.year2   = t->tm_year % 10;
-	}
-
-	tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
-
-	return 0;
-}
-
-static int amiga_set_clock_mmss(unsigned long nowtime)
-{
-	short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
-
-	if (AMIGAHW_PRESENT(A3000_CLK)) {
-		tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
-
-		tod_3000.second1 = real_seconds / 10;
-		tod_3000.second2 = real_seconds % 10;
-		tod_3000.minute1 = real_minutes / 10;
-		tod_3000.minute2 = real_minutes % 10;
-
-		tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
-	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
-		int cnt = 5;
-
-		tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
-
-		while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt) {
-			tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
-			udelay(70);
-			tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
-			--cnt;
-		}
-
-		if (!cnt)
-			printk(KERN_INFO "set_clock_mmss: timed out waiting for RTC (0x%x)\n", tod_2000.cntrl1);
-
-		tod_2000.second1 = real_seconds / 10;
-		tod_2000.second2 = real_seconds % 10;
-		tod_2000.minute1 = real_minutes / 10;
-		tod_2000.minute2 = real_minutes % 10;
-
-		tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
-	}
-
-	return 0;
-}
-
-static unsigned int amiga_get_ss(void)
-{
-	unsigned int s;
-
-	if (AMIGAHW_PRESENT(A3000_CLK)) {
-		tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
-		s = tod_3000.second1 * 10 + tod_3000.second2;
-		tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
-	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
-		s = tod_2000.second1 * 10 + tod_2000.second2;
-	}
-	return s;
-}
-
 static NORET_TYPE void amiga_reset(void)
     ATTRIB_NORET;
 
diff --git a/arch/m68k/amiga/platform.c b/arch/m68k/amiga/platform.c
index 38f18bf..7fd8b41 100644
--- a/arch/m68k/amiga/platform.c
+++ b/arch/m68k/amiga/platform.c
@@ -11,6 +11,7 @@
 #include <linux/zorro.h>
 
 #include <asm/amigahw.h>
+#include <asm/amigayle.h>
 
 
 #ifdef CONFIG_ZORRO
@@ -55,11 +56,77 @@
 
 subsys_initcall(amiga_init_bus);
 
-#endif /* CONFIG_ZORRO */
+
+static int z_dev_present(zorro_id id)
+{
+	unsigned int i;
+
+	for (i = 0; i < zorro_num_autocon; i++)
+		if (zorro_autocon[i].rom.er_Manufacturer == ZORRO_MANUF(id) &&
+		    zorro_autocon[i].rom.er_Product == ZORRO_PROD(id))
+			return 1;
+
+	return 0;
+}
+
+#else /* !CONFIG_ZORRO */
+
+static inline int z_dev_present(zorro_id id) { return 0; }
+
+#endif /* !CONFIG_ZORRO */
+
+
+static const struct resource a3000_scsi_resource __initconst = {
+	.start	= 0xdd0000,
+	.end	= 0xdd00ff,
+	.flags	= IORESOURCE_MEM,
+};
+
+
+static const struct resource a4000t_scsi_resource __initconst = {
+	.start	= 0xdd0000,
+	.end	= 0xdd0fff,
+	.flags	= IORESOURCE_MEM,
+};
+
+
+static const struct resource a1200_ide_resource __initconst = {
+	.start	= 0xda0000,
+	.end	= 0xda1fff,
+	.flags	= IORESOURCE_MEM,
+};
+
+static const struct gayle_ide_platform_data a1200_ide_pdata __initconst = {
+	.base		= 0xda0000,
+	.irqport	= 0xda9000,
+	.explicit_ack	= 1,
+};
+
+
+static const struct resource a4000_ide_resource __initconst = {
+	.start	= 0xdd2000,
+	.end	= 0xdd3fff,
+	.flags	= IORESOURCE_MEM,
+};
+
+static const struct gayle_ide_platform_data a4000_ide_pdata __initconst = {
+	.base		= 0xdd2020,
+	.irqport	= 0xdd3020,
+	.explicit_ack	= 0,
+};
+
+
+static const struct resource amiga_rtc_resource __initconst = {
+	.start	= 0x00dc0000,
+	.end	= 0x00dcffff,
+	.flags	= IORESOURCE_MEM,
+};
 
 
 static int __init amiga_init_devices(void)
 {
+	struct platform_device *pdev;
+
 	if (!MACH_IS_AMIGA)
 		return -ENODEV;
 
@@ -77,6 +144,53 @@
 	if (AMIGAHW_PRESENT(AMI_FLOPPY))
 		platform_device_register_simple("amiga-floppy", -1, NULL, 0);
 
+	if (AMIGAHW_PRESENT(A3000_SCSI))
+		platform_device_register_simple("amiga-a3000-scsi", -1,
+						&a3000_scsi_resource, 1);
+
+	if (AMIGAHW_PRESENT(A4000_SCSI))
+		platform_device_register_simple("amiga-a4000t-scsi", -1,
+						&a4000t_scsi_resource, 1);
+
+	if (AMIGAHW_PRESENT(A1200_IDE) ||
+	    z_dev_present(ZORRO_PROD_MTEC_VIPER_MK_V_E_MATRIX_530_SCSI_IDE)) {
+		pdev = platform_device_register_simple("amiga-gayle-ide", -1,
+						       &a1200_ide_resource, 1);
+		platform_device_add_data(pdev, &a1200_ide_pdata,
+					 sizeof(a1200_ide_pdata));
+	}
+
+	if (AMIGAHW_PRESENT(A4000_IDE)) {
+		pdev = platform_device_register_simple("amiga-gayle-ide", -1,
+						       &a4000_ide_resource, 1);
+		platform_device_add_data(pdev, &a4000_ide_pdata,
+					 sizeof(a4000_ide_pdata));
+	}
+
+
+	/* other I/O hardware */
+	if (AMIGAHW_PRESENT(AMI_KEYBOARD))
+		platform_device_register_simple("amiga-keyboard", -1, NULL, 0);
+
+	if (AMIGAHW_PRESENT(AMI_MOUSE))
+		platform_device_register_simple("amiga-mouse", -1, NULL, 0);
+
+	if (AMIGAHW_PRESENT(AMI_SERIAL))
+		platform_device_register_simple("amiga-serial", -1, NULL, 0);
+
+	if (AMIGAHW_PRESENT(AMI_PARALLEL))
+		platform_device_register_simple("amiga-parallel", -1, NULL, 0);
+
+
+	/* real time clocks */
+	if (AMIGAHW_PRESENT(A2000_CLK))
+		platform_device_register_simple("rtc-msm6242", -1,
+						&amiga_rtc_resource, 1);
+
+	if (AMIGAHW_PRESENT(A3000_CLK))
+		platform_device_register_simple("rtc-rp5c01", -1,
+						&amiga_rtc_resource, 1);
+
 	return 0;
 }
 
diff --git a/arch/m68k/include/asm/amigayle.h b/arch/m68k/include/asm/amigayle.h
index bb5a6aa..a01453d 100644
--- a/arch/m68k/include/asm/amigayle.h
+++ b/arch/m68k/include/asm/amigayle.h
@@ -104,4 +104,10 @@
 #define GAYLE_CFG_250NS		0x00
 #define GAYLE_CFG_720NS		0x0c
 
+struct gayle_ide_platform_data {
+	unsigned long base;
+	unsigned long irqport;
+	int explicit_ack;	/* A1200 IDE needs explicit ack */
+};
+
 #endif /* asm-m68k/amigayle.h */
diff --git a/arch/m68k/include/asm/atomic.h b/arch/m68k/include/asm/atomic.h
index 8d29145..eab36dc 100644
--- a/arch/m68k/include/asm/atomic.h
+++ b/arch/m68k/include/asm/atomic.h
@@ -3,3 +3,5 @@
 #else
 #include "atomic_mm.h"
 #endif
+
+#include <asm-generic/atomic64.h>
diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index fed3fd3..ecafbe1 100644
--- a/arch/m68k/include/asm/cache.h
+++ b/arch/m68k/include/asm/cache.h
@@ -8,4 +8,6 @@
 #define        L1_CACHE_SHIFT  4
 #define        L1_CACHE_BYTES  (1<< L1_CACHE_SHIFT)
 
+#define ARCH_KMALLOC_MINALIGN	L1_CACHE_BYTES
+
 #endif
diff --git a/arch/m68k/include/asm/scatterlist.h b/arch/m68k/include/asm/scatterlist.h
index e27ad90..175da06 100644
--- a/arch/m68k/include/asm/scatterlist.h
+++ b/arch/m68k/include/asm/scatterlist.h
@@ -1,23 +1,9 @@
 #ifndef _M68K_SCATTERLIST_H
 #define _M68K_SCATTERLIST_H
 
-#include <linux/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	unsigned long page_link;
-	unsigned int offset;
-	unsigned int length;
-
-	dma_addr_t dma_address;	/* A place to hang host-specific addresses at. */
-};
+#include <asm-generic/scatterlist.h>
 
 /* This is bogus and should go away. */
 #define ISA_DMA_THRESHOLD (0x00ffffff)
 
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->length)
-
 #endif /* !(_M68K_SCATTERLIST_H) */
diff --git a/arch/microblaze/include/asm/scatterlist.h b/arch/microblaze/include/asm/scatterlist.h
index 35d786f..dc4a890 100644
--- a/arch/microblaze/include/asm/scatterlist.h
+++ b/arch/microblaze/include/asm/scatterlist.h
@@ -1 +1,3 @@
 #include <asm-generic/scatterlist.h>
+
+#define ISA_DMA_THRESHOLD	(~0UL)
diff --git a/arch/mips/include/asm/scatterlist.h b/arch/mips/include/asm/scatterlist.h
index 83d69fe..9af65e7 100644
--- a/arch/mips/include/asm/scatterlist.h
+++ b/arch/mips/include/asm/scatterlist.h
@@ -1,27 +1,7 @@
 #ifndef __ASM_SCATTERLIST_H
 #define __ASM_SCATTERLIST_H
 
-#include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long	sg_magic;
-#endif
-	unsigned long	page_link;
-	unsigned int	offset;
-	dma_addr_t	dma_address;
-	unsigned int	length;
-};
-
-/*
- * These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns, or alternatively stop on the first sg_dma_len(sg) which
- * is 0.
- */
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->length)
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0x00ffffffUL)
 
diff --git a/arch/mn10300/include/asm/scatterlist.h b/arch/mn10300/include/asm/scatterlist.h
index 6753590..7bd00b9 100644
--- a/arch/mn10300/include/asm/scatterlist.h
+++ b/arch/mn10300/include/asm/scatterlist.h
@@ -11,45 +11,8 @@
 #ifndef _ASM_SCATTERLIST_H
 #define _ASM_SCATTERLIST_H
 
-#include <asm/types.h>
-
-/*
- * Drivers must set either ->address or (preferred) page and ->offset
- * to indicate where data must be transferred to/from.
- *
- * Using page is recommended since it handles highmem data as well as
- * low mem. ->address is restricted to data which has a virtual mapping, and
- * it will go away in the future. Updating to page can be automated very
- * easily -- something like
- *
- * sg->address = some_ptr;
- *
- * can be rewritten as
- *
- * sg_set_page(virt_to_page(some_ptr));
- * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
- *
- * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
- */
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long	sg_magic;
-#endif
-	unsigned long	page_link;
-	unsigned int	offset;		/* for highmem, page offset */
-	dma_addr_t	dma_address;
-	unsigned int	length;
-};
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (0x00ffffff)
 
-/*
- * These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns.
- */
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->length)
-
 #endif /* _ASM_SCATTERLIST_H */
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 9c4da3d..05a366a 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -98,6 +98,9 @@
 config NEED_DMA_MAP_STATE
 	def_bool y
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config ISA_DMA_API
 	bool
 
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
index 4772777..4556d82 100644
--- a/arch/parisc/include/asm/cacheflush.h
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -2,6 +2,7 @@
 #define _PARISC_CACHEFLUSH_H
 
 #include <linux/mm.h>
+#include <linux/uaccess.h>
 
 /* The usual comment is "Caches aren't brain-dead on the <architecture>".
  * Unfortunately, that doesn't apply to PA-RISC. */
@@ -125,11 +126,20 @@
 
 #define kunmap(page)			kunmap_parisc(page_address(page))
 
-#define kmap_atomic(page, idx)		page_address(page)
+static inline void *kmap_atomic(struct page *page, enum km_type idx)
+{
+	pagefault_disable();
+	return page_address(page);
+}
 
-#define kunmap_atomic(addr, idx)	kunmap_parisc(addr)
+static inline void kunmap_atomic(void *addr, enum km_type idx)
+{
+	kunmap_parisc(addr);
+	pagefault_enable();
+}
 
-#define kmap_atomic_pfn(pfn, idx)	page_address(pfn_to_page(pfn))
+#define kmap_atomic_prot(page, idx, prot)	kmap_atomic(page, idx)
+#define kmap_atomic_pfn(pfn, idx)	kmap_atomic(pfn_to_page(pfn), (idx))
 #define kmap_atomic_to_page(ptr)	virt_to_page(ptr)
 #endif
 
diff --git a/arch/parisc/include/asm/scatterlist.h b/arch/parisc/include/asm/scatterlist.h
index 62269b3..2c3b79b 100644
--- a/arch/parisc/include/asm/scatterlist.h
+++ b/arch/parisc/include/asm/scatterlist.h
@@ -3,25 +3,9 @@
 
 #include <asm/page.h>
 #include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	unsigned long page_link;
-	unsigned int offset;
-
-	unsigned int length;
-
-	/* an IOVA can be 64-bits on some PA-Risc platforms. */
-	dma_addr_t iova;	/* I/O Virtual Address */
-	__u32      iova_length; /* bytes mapped */
-};
-
-#define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
-#define sg_dma_address(sg) ((sg)->iova)
-#define sg_dma_len(sg)     ((sg)->iova_length)
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (~0UL)
+#define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
 
 #endif /* _ASM_PARISC_SCATTERLIST_H */
diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c
index ec787b4..dcd5510 100644
--- a/arch/parisc/kernel/asm-offsets.c
+++ b/arch/parisc/kernel/asm-offsets.c
@@ -45,8 +45,12 @@
 #else
 #define FRAME_SIZE	64
 #endif
+#define FRAME_ALIGN	64
 
-#define align(x,y) (((x)+FRAME_SIZE+(y)-1) - (((x)+(y)-1)%(y)))
+/* Add FRAME_SIZE to the size x and align it to y. All definitions
+ * that use align_frame will include space for a frame.
+ */
+#define align_frame(x,y) (((x)+FRAME_SIZE+(y)-1) - (((x)+(y)-1)%(y)))
 
 int main(void)
 {
@@ -146,7 +150,8 @@
 	DEFINE(TASK_PT_IOR, offsetof(struct task_struct, thread.regs.ior));
 	BLANK();
 	DEFINE(TASK_SZ, sizeof(struct task_struct));
-	DEFINE(TASK_SZ_ALGN, align(sizeof(struct task_struct), 64));
+	/* TASK_SZ_ALGN includes space for a stack frame. */
+	DEFINE(TASK_SZ_ALGN, align_frame(sizeof(struct task_struct), FRAME_ALIGN));
 	BLANK();
 	DEFINE(PT_PSW, offsetof(struct pt_regs, gr[ 0]));
 	DEFINE(PT_GR1, offsetof(struct pt_regs, gr[ 1]));
@@ -233,7 +238,8 @@
 	DEFINE(PT_ISR, offsetof(struct pt_regs, isr));
 	DEFINE(PT_IOR, offsetof(struct pt_regs, ior));
 	DEFINE(PT_SIZE, sizeof(struct pt_regs));
-	DEFINE(PT_SZ_ALGN, align(sizeof(struct pt_regs), 64));
+	/* PT_SZ_ALGN includes space for a stack frame. */
+	DEFINE(PT_SZ_ALGN, align_frame(sizeof(struct pt_regs), FRAME_ALIGN));
 	BLANK();
 	DEFINE(TI_TASK, offsetof(struct thread_info, task));
 	DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain));
@@ -242,7 +248,8 @@
 	DEFINE(TI_SEGMENT, offsetof(struct thread_info, addr_limit));
 	DEFINE(TI_PRE_COUNT, offsetof(struct thread_info, preempt_count));
 	DEFINE(THREAD_SZ, sizeof(struct thread_info));
-	DEFINE(THREAD_SZ_ALGN, align(sizeof(struct thread_info), 64));
+	/* THREAD_SZ_ALGN includes space for a stack frame. */
+	DEFINE(THREAD_SZ_ALGN, align_frame(sizeof(struct thread_info), FRAME_ALIGN));
 	BLANK();
 	DEFINE(ICACHE_BASE, offsetof(struct pdc_cache_info, ic_base));
 	DEFINE(ICACHE_STRIDE, offsetof(struct pdc_cache_info, ic_stride));
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 3a44f7f..6337ade 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -364,32 +364,6 @@
 	.align		32
 	.endm
 
-	/* The following are simple 32 vs 64 bit instruction
-	 * abstractions for the macros */
-	.macro		EXTR	reg1,start,length,reg2
-#ifdef CONFIG_64BIT
-	extrd,u		\reg1,32+(\start),\length,\reg2
-#else
-	extrw,u		\reg1,\start,\length,\reg2
-#endif
-	.endm
-
-	.macro		DEP	reg1,start,length,reg2
-#ifdef CONFIG_64BIT
-	depd		\reg1,32+(\start),\length,\reg2
-#else
-	depw		\reg1,\start,\length,\reg2
-#endif
-	.endm
-
-	.macro		DEPI	val,start,length,reg
-#ifdef CONFIG_64BIT
-	depdi		\val,32+(\start),\length,\reg
-#else
-	depwi		\val,\start,\length,\reg
-#endif
-	.endm
-
 	/* In LP64, the space contains part of the upper 32 bits of the
 	 * fault.  We have to extract this and place it in the va,
 	 * zeroing the corresponding bits in the space register */
@@ -442,19 +416,19 @@
 	 */
 	.macro		L2_ptep	pmd,pte,index,va,fault
 #if PT_NLEVELS == 3
-	EXTR		\va,31-ASM_PMD_SHIFT,ASM_BITS_PER_PMD,\index
+	extru		\va,31-ASM_PMD_SHIFT,ASM_BITS_PER_PMD,\index
 #else
-	EXTR		\va,31-ASM_PGDIR_SHIFT,ASM_BITS_PER_PGD,\index
+	extru		\va,31-ASM_PGDIR_SHIFT,ASM_BITS_PER_PGD,\index
 #endif
-	DEP             %r0,31,PAGE_SHIFT,\pmd  /* clear offset */
+	dep             %r0,31,PAGE_SHIFT,\pmd  /* clear offset */
 	copy		%r0,\pte
 	ldw,s		\index(\pmd),\pmd
 	bb,>=,n		\pmd,_PxD_PRESENT_BIT,\fault
-	DEP		%r0,31,PxD_FLAG_SHIFT,\pmd /* clear flags */
+	dep		%r0,31,PxD_FLAG_SHIFT,\pmd /* clear flags */
 	copy		\pmd,%r9
 	SHLREG		%r9,PxD_VALUE_SHIFT,\pmd
-	EXTR		\va,31-PAGE_SHIFT,ASM_BITS_PER_PTE,\index
-	DEP		%r0,31,PAGE_SHIFT,\pmd  /* clear offset */
+	extru		\va,31-PAGE_SHIFT,ASM_BITS_PER_PTE,\index
+	dep		%r0,31,PAGE_SHIFT,\pmd  /* clear offset */
 	shladd		\index,BITS_PER_PTE_ENTRY,\pmd,\pmd
 	LDREG		%r0(\pmd),\pte		/* pmd is now pte */
 	bb,>=,n		\pte,_PAGE_PRESENT_BIT,\fault
@@ -605,7 +579,7 @@
 	depdi		0,31,32,\tmp
 #endif
 	copy		\va,\tmp1
-	DEPI		0,31,23,\tmp1
+	depi		0,31,23,\tmp1
 	cmpb,COND(<>),n	\tmp,\tmp1,\fault
 	ldi		(_PAGE_DIRTY|_PAGE_WRITE|_PAGE_READ),\prot
 	depd,z		\prot,8,7,\prot
@@ -997,13 +971,6 @@
 
 	rfi
 	nop
-	nop
-	nop
-	nop
-	nop
-	nop
-	nop
-	nop
 
 #ifndef CONFIG_PREEMPT
 # define intr_do_preempt	intr_restore
@@ -2076,9 +2043,10 @@
 	LDREG	TASK_PT_GR31(%r1),%r31	   /* restore syscall rp */
 
 	/* NOTE: We use rsm/ssm pair to make this operation atomic */
+	LDREG   TASK_PT_GR30(%r1),%r1              /* Get user sp */
 	rsm     PSW_SM_I, %r0
-	LDREG   TASK_PT_GR30(%r1),%r30             /* restore user sp */
-	mfsp	%sr3,%r1			   /* Get users space id */
+	copy    %r1,%r30                           /* Restore user sp */
+	mfsp    %sr3,%r1                           /* Get user space id */
 	mtsp    %r1,%sr7                           /* Restore sr7 */
 	ssm     PSW_SM_I, %r0
 
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index f5f9602..68e75ce 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -47,18 +47,17 @@
 	KILL_INSN
 	.endr
 
-	/* ADDRESS 0xb0 to 0xb4, lws uses 1 insns for entry */
+	/* ADDRESS 0xb0 to 0xb8, lws uses two insns for entry */
 	/* Light-weight-syscall entry must always be located at 0xb0 */
 	/* WARNING: Keep this number updated with table size changes */
 #define __NR_lws_entries (2)
 
 lws_entry:
-	/* Unconditional branch to lws_start, located on the 
-	   same gateway page */
-	b,n	lws_start
+	gate	lws_start, %r0		/* increase privilege */
+	depi	3, 31, 2, %r31		/* Ensure we return into user mode. */
 
-	/* Fill from 0xb4 to 0xe0 */
-	.rept 11
+	/* Fill from 0xb8 to 0xe0 */
+	.rept 10
 	KILL_INSN
 	.endr
 
@@ -423,9 +422,6 @@
 
 	*********************************************************/
 lws_start:
-	/* Gate and ensure we return to userspace */
-	gate	.+8, %r0
-	depi	3, 31, 2, %r31	/* Ensure we return to userspace */
 
 #ifdef CONFIG_64BIT
 	/* FIXME: If we are a 64-bit kernel just
@@ -442,7 +438,7 @@
 #endif	
 
         /* Is the lws entry number valid? */
-	comiclr,>>=	__NR_lws_entries, %r20, %r0
+	comiclr,>>	__NR_lws_entries, %r20, %r0
 	b,n	lws_exit_nosys
 
 	/* WARNING: Trashing sr2 and sr3 */
@@ -473,7 +469,7 @@
 	/* now reset the lowest bit of sp if it was set */
 	xor	%r30,%r1,%r30
 #endif
-	be,n	0(%sr3, %r31)
+	be,n	0(%sr7, %r31)
 
 
 	
@@ -529,7 +525,6 @@
 #endif
 
 lws_compare_and_swap:
-#ifdef CONFIG_SMP
 	/* Load start of lock table */
 	ldil	L%lws_lock_start, %r20
 	ldo	R%lws_lock_start(%r20), %r28
@@ -572,8 +567,6 @@
 	ldo	2(%r0), %r28				/* 2nd case */
 	b	lws_exit				/* Contended... */
 	ldo	-EAGAIN(%r0), %r21			/* Spin in userspace */
-#endif
-/* CONFIG_SMP */
 
 	/*
 		prev = *addr;
@@ -601,13 +594,11 @@
 1:	ldw	0(%sr3,%r26), %r28
 	sub,<>	%r28, %r25, %r0
 2:	stw	%r24, 0(%sr3,%r26)
-#ifdef CONFIG_SMP
 	/* Free lock */
 	stw	%r20, 0(%sr2,%r20)
-# if ENABLE_LWS_DEBUG
+#if ENABLE_LWS_DEBUG
 	/* Clear thread register indicator */
 	stw	%r0, 4(%sr2,%r20)
-# endif
 #endif
 	/* Return to userspace, set no error */
 	b	lws_exit
@@ -615,12 +606,10 @@
 
 3:		
 	/* Error occured on load or store */
-#ifdef CONFIG_SMP
 	/* Free lock */
 	stw	%r20, 0(%sr2,%r20)
-# if ENABLE_LWS_DEBUG
+#if ENABLE_LWS_DEBUG
 	stw	%r0, 4(%sr2,%r20)
-# endif
 #endif
 	b	lws_exit
 	ldo	-EFAULT(%r0),%r21	/* set errno */
@@ -672,7 +661,6 @@
 END(sys_call_table64)
 #endif
 
-#ifdef CONFIG_SMP
 	/*
 		All light-weight-syscall atomic operations 
 		will use this set of locks 
@@ -694,8 +682,6 @@
 	.endr
 END(lws_lock_start)
 	.previous
-#endif
-/* CONFIG_SMP for lws_lock_start */
 
 .end
 
diff --git a/arch/parisc/math-emu/decode_exc.c b/arch/parisc/math-emu/decode_exc.c
index 3ca1c61..27a7492 100644
--- a/arch/parisc/math-emu/decode_exc.c
+++ b/arch/parisc/math-emu/decode_exc.c
@@ -342,6 +342,7 @@
 		return SIGNALCODE(SIGFPE, FPE_FLTINV);
 	  case DIVISIONBYZEROEXCEPTION:
 		update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+		Clear_excp_register(exception_index);
 	  	return SIGNALCODE(SIGFPE, FPE_FLTDIV);
 	  case INEXACTEXCEPTION:
 		update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index c6afbfc..18162ce 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -264,8 +264,7 @@
 
   out_of_memory:
 	up_read(&mm->mmap_sem);
-	printk(KERN_CRIT "VM: killing process %s\n", current->comm);
-	if (user_mode(regs))
-		do_group_exit(SIGKILL);
-	goto no_context;
+	if (!user_mode(regs))
+		goto no_context;
+	pagefault_out_of_memory();
 }
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c4c4549..66a315e 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -663,6 +663,9 @@
 config NEED_DMA_MAP_STATE
 	def_bool (PPC64 || NOT_COHERENT_CACHE)
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config GENERIC_ISA_DMA
 	bool
 	depends on PPC64 || POWER4 || 6xx && !CPM2
diff --git a/arch/powerpc/include/asm/scatterlist.h b/arch/powerpc/include/asm/scatterlist.h
index 912bf59..34cc78f 100644
--- a/arch/powerpc/include/asm/scatterlist.h
+++ b/arch/powerpc/include/asm/scatterlist.h
@@ -9,38 +9,12 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#ifdef __KERNEL__
-#include <linux/types.h>
 #include <asm/dma.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	unsigned long page_link;
-	unsigned int offset;
-	unsigned int length;
-
-	/* For TCE or SWIOTLB support */
-	dma_addr_t dma_address;
-	u32 dma_length;
-};
-
-/*
- * These macros should be used after a dma_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns, or alternatively stop on the first sg_dma_len(sg) which
- * is 0.
- */
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->dma_length)
+#include <asm-generic/scatterlist.h>
 
 #ifdef __powerpc64__
 #define ISA_DMA_THRESHOLD	(~0UL)
 #endif
-
 #define ARCH_HAS_SG_CHAIN
 
-#endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_SCATTERLIST_H */
diff --git a/arch/powerpc/include/asm/sfp-machine.h b/arch/powerpc/include/asm/sfp-machine.h
index 8b8fab9..3a7a67a 100644
--- a/arch/powerpc/include/asm/sfp-machine.h
+++ b/arch/powerpc/include/asm/sfp-machine.h
@@ -353,6 +353,12 @@
 #define abort()								\
 	return 0
 
+#ifdef __BIG_ENDIAN
+#define __BYTE_ORDER __BIG_ENDIAN
+#else
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
+
 /* Exception flags. */
 #define EFLAG_INVALID		(1 << (31 - 2))
 #define EFLAG_OVERFLOW		(1 << (31 - 3))
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index 4ff4da2c..e7fe218 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -39,8 +39,8 @@
 	.dma_supported = swiotlb_dma_supported,
 	.map_page = swiotlb_map_page,
 	.unmap_page = swiotlb_unmap_page,
-	.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
-	.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
+	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
+	.sync_single_for_device = swiotlb_sync_single_for_device,
 	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
 	.sync_sg_for_device = swiotlb_sync_sg_for_device,
 	.mapping_error = swiotlb_dma_mapping_error,
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 6c1df57..8d1de6f 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -127,11 +127,11 @@
 		__dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
 }
 
-static inline void dma_direct_sync_single_range(struct device *dev,
-		dma_addr_t dma_handle, unsigned long offset, size_t size,
-		enum dma_data_direction direction)
+static inline void dma_direct_sync_single(struct device *dev,
+					  dma_addr_t dma_handle, size_t size,
+					  enum dma_data_direction direction)
 {
-	__dma_sync(bus_to_virt(dma_handle+offset), size, direction);
+	__dma_sync(bus_to_virt(dma_handle), size, direction);
 }
 #endif
 
@@ -144,8 +144,8 @@
 	.map_page	= dma_direct_map_page,
 	.unmap_page	= dma_direct_unmap_page,
 #ifdef CONFIG_NOT_COHERENT_CACHE
-	.sync_single_range_for_cpu 	= dma_direct_sync_single_range,
-	.sync_single_range_for_device 	= dma_direct_sync_single_range,
+	.sync_single_for_cpu 		= dma_direct_sync_single,
+	.sync_single_for_device 	= dma_direct_sync_single,
 	.sync_sg_for_cpu 		= dma_direct_sync_sg,
 	.sync_sg_for_device 		= dma_direct_sync_sg,
 #endif
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 5c28082..1a40da9 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -1849,8 +1849,7 @@
 	return ret;
 }
 
-static int spufs_mfc_fsync(struct file *file, struct dentry *dentry,
-			   int datasync)
+static int spufs_mfc_fsync(struct file *file, int datasync)
 {
 	return spufs_mfc_flush(file, NULL);
 }
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index fc1b1c4..e5e5f82 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -251,7 +251,7 @@
 	.llseek		= dcache_dir_lseek,
 	.read		= generic_read_dir,
 	.readdir	= dcache_readdir,
-	.fsync		= simple_sync_file,
+	.fsync		= noop_fsync,
 };
 EXPORT_SYMBOL_GPL(spufs_context_fops);
 
diff --git a/arch/powerpc/platforms/pseries/hvCall_inst.c b/arch/powerpc/platforms/pseries/hvCall_inst.c
index 1fefae7..e19ff02 100644
--- a/arch/powerpc/platforms/pseries/hvCall_inst.c
+++ b/arch/powerpc/platforms/pseries/hvCall_inst.c
@@ -102,7 +102,7 @@
 #define CPU_NAME_BUF_SIZE	32
 
 
-static void probe_hcall_entry(unsigned long opcode, unsigned long *args)
+static void probe_hcall_entry(void *ignored, unsigned long opcode, unsigned long *args)
 {
 	struct hcall_stats *h;
 
@@ -114,7 +114,7 @@
 	h->purr_start = mfspr(SPRN_PURR);
 }
 
-static void probe_hcall_exit(unsigned long opcode, unsigned long retval,
+static void probe_hcall_exit(void *ignored, unsigned long opcode, unsigned long retval,
 			     unsigned long *retbuf)
 {
 	struct hcall_stats *h;
@@ -140,11 +140,11 @@
 	if (!firmware_has_feature(FW_FEATURE_LPAR))
 		return 0;
 
-	if (register_trace_hcall_entry(probe_hcall_entry))
+	if (register_trace_hcall_entry(probe_hcall_entry, NULL))
 		return -EINVAL;
 
-	if (register_trace_hcall_exit(probe_hcall_exit)) {
-		unregister_trace_hcall_entry(probe_hcall_entry);
+	if (register_trace_hcall_exit(probe_hcall_exit, NULL)) {
+		unregister_trace_hcall_entry(probe_hcall_entry, NULL);
 		return -EINVAL;
 	}
 
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index 6a1fde0..cd37e49 100644
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -1,6 +1,15 @@
 /*
  * Freescale MPC85xx/MPC86xx RapidIO support
  *
+ * Copyright 2009 Sysgo AG
+ * Thomas Moll <thomas.moll@sysgo.com>
+ * - fixed maintenance access routines, check for aligned access
+ *
+ * Copyright 2009 Integrated Device Technology, Inc.
+ * Alex Bounine <alexandre.bounine@idt.com>
+ * - Added Port-Write message handling
+ * - Added Machine Check exception handling
+ *
  * Copyright (C) 2007, 2008 Freescale Semiconductor, Inc.
  * Zhang Wei <wei.zhang@freescale.com>
  *
@@ -24,19 +33,30 @@
 #include <linux/of_platform.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/kfifo.h>
 
 #include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/uaccess.h>
+
+#undef DEBUG_PW	/* Port-Write debugging */
 
 /* RapidIO definition irq, which read from OF-tree */
 #define IRQ_RIO_BELL(m)		(((struct rio_priv *)(m->priv))->bellirq)
 #define IRQ_RIO_TX(m)		(((struct rio_priv *)(m->priv))->txirq)
 #define IRQ_RIO_RX(m)		(((struct rio_priv *)(m->priv))->rxirq)
+#define IRQ_RIO_PW(m)		(((struct rio_priv *)(m->priv))->pwirq)
 
 #define RIO_ATMU_REGS_OFFSET	0x10c00
 #define RIO_P_MSG_REGS_OFFSET	0x11000
 #define RIO_S_MSG_REGS_OFFSET	0x13000
 #define RIO_ESCSR		0x158
 #define RIO_CCSR		0x15c
+#define RIO_LTLEDCSR		0x0608
+#define  RIO_LTLEDCSR_IER	0x80000000
+#define  RIO_LTLEDCSR_PRT	0x01000000
+#define RIO_LTLEECSR		0x060c
+#define RIO_EPWISR		0x10010
 #define RIO_ISR_AACR		0x10120
 #define RIO_ISR_AACR_AA		0x1	/* Accept All ID */
 #define RIO_MAINT_WIN_SIZE	0x400000
@@ -55,6 +75,18 @@
 #define RIO_MSG_ISR_QFI		0x00000010
 #define RIO_MSG_ISR_DIQI	0x00000001
 
+#define RIO_IPWMR_SEN		0x00100000
+#define RIO_IPWMR_QFIE		0x00000100
+#define RIO_IPWMR_EIE		0x00000020
+#define RIO_IPWMR_CQ		0x00000002
+#define RIO_IPWMR_PWE		0x00000001
+
+#define RIO_IPWSR_QF		0x00100000
+#define RIO_IPWSR_TE		0x00000080
+#define RIO_IPWSR_QFI		0x00000010
+#define RIO_IPWSR_PWD		0x00000008
+#define RIO_IPWSR_PWB		0x00000004
+
 #define RIO_MSG_DESC_SIZE	32
 #define RIO_MSG_BUFFER_SIZE	4096
 #define RIO_MIN_TX_RING_SIZE	2
@@ -121,7 +153,7 @@
 	u32 pad10[26];
 	u32 pwmr;
 	u32 pwsr;
-	u32 pad11;
+	u32 epwqbar;
 	u32 pwqbar;
 };
 
@@ -160,6 +192,14 @@
 	void *dev_id;
 };
 
+struct rio_port_write_msg {
+	void *virt;
+	dma_addr_t phys;
+	u32 msg_count;
+	u32 err_count;
+	u32 discard_count;
+};
+
 struct rio_priv {
 	struct device *dev;
 	void __iomem *regs_win;
@@ -172,11 +212,64 @@
 	struct rio_dbell_ring dbell_ring;
 	struct rio_msg_tx_ring msg_tx_ring;
 	struct rio_msg_rx_ring msg_rx_ring;
+	struct rio_port_write_msg port_write_msg;
 	int bellirq;
 	int txirq;
 	int rxirq;
+	int pwirq;
+	struct work_struct pw_work;
+	struct kfifo pw_fifo;
+	spinlock_t pw_fifo_lock;
 };
 
+#define __fsl_read_rio_config(x, addr, err, op)		\
+	__asm__ __volatile__(				\
+		"1:	"op" %1,0(%2)\n"		\
+		"	eieio\n"			\
+		"2:\n"					\
+		".section .fixup,\"ax\"\n"		\
+		"3:	li %1,-1\n"			\
+		"	li %0,%3\n"			\
+		"	b 2b\n"				\
+		".section __ex_table,\"a\"\n"		\
+		"	.align 2\n"			\
+		"	.long 1b,3b\n"			\
+		".text"					\
+		: "=r" (err), "=r" (x)			\
+		: "b" (addr), "i" (-EFAULT), "0" (err))
+
+static void __iomem *rio_regs_win;
+
+static int (*saved_mcheck_exception)(struct pt_regs *regs);
+
+static int fsl_rio_mcheck_exception(struct pt_regs *regs)
+{
+	const struct exception_table_entry *entry = NULL;
+	unsigned long reason = (mfspr(SPRN_MCSR) & MCSR_MASK);
+
+	if (reason & MCSR_BUS_RBERR) {
+		reason = in_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR));
+		if (reason & (RIO_LTLEDCSR_IER | RIO_LTLEDCSR_PRT)) {
+			/* Check if we are prepared to handle this fault */
+			entry = search_exception_tables(regs->nip);
+			if (entry) {
+				pr_debug("RIO: %s - MC Exception handled\n",
+					 __func__);
+				out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR),
+					 0);
+				regs->msr |= MSR_RI;
+				regs->nip = entry->fixup;
+				return 1;
+			}
+		}
+	}
+
+	if (saved_mcheck_exception)
+		return saved_mcheck_exception(regs);
+	else
+		return cur_cpu_spec->machine_check(regs);
+}
+
 /**
  * fsl_rio_doorbell_send - Send a MPC85xx doorbell message
  * @mport: RapidIO master port info
@@ -277,27 +370,44 @@
 {
 	struct rio_priv *priv = mport->priv;
 	u8 *data;
+	u32 rval, err = 0;
 
 	pr_debug
 	    ("fsl_rio_config_read: index %d destid %d hopcount %d offset %8.8x len %d\n",
 	     index, destid, hopcount, offset, len);
-	out_be32(&priv->maint_atmu_regs->rowtar,
-		 (destid << 22) | (hopcount << 12) | ((offset & ~0x3) >> 9));
 
-	data = (u8 *) priv->maint_win + offset;
+	/* 16MB maintenance window possible */
+	/* allow only aligned access to maintenance registers */
+	if (offset > (0x1000000 - len) || !IS_ALIGNED(offset, len))
+		return -EINVAL;
+
+	out_be32(&priv->maint_atmu_regs->rowtar,
+		 (destid << 22) | (hopcount << 12) | (offset >> 12));
+	out_be32(&priv->maint_atmu_regs->rowtear,  (destid >> 10));
+
+	data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1));
 	switch (len) {
 	case 1:
-		*val = in_8((u8 *) data);
+		__fsl_read_rio_config(rval, data, err, "lbz");
 		break;
 	case 2:
-		*val = in_be16((u16 *) data);
+		__fsl_read_rio_config(rval, data, err, "lhz");
+		break;
+	case 4:
+		__fsl_read_rio_config(rval, data, err, "lwz");
 		break;
 	default:
-		*val = in_be32((u32 *) data);
-		break;
+		return -EINVAL;
 	}
 
-	return 0;
+	if (err) {
+		pr_debug("RIO: cfg_read error %d for %x:%x:%x\n",
+			 err, destid, hopcount, offset);
+	}
+
+	*val = rval;
+
+	return err;
 }
 
 /**
@@ -322,10 +432,17 @@
 	pr_debug
 	    ("fsl_rio_config_write: index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n",
 	     index, destid, hopcount, offset, len, val);
-	out_be32(&priv->maint_atmu_regs->rowtar,
-		 (destid << 22) | (hopcount << 12) | ((offset & ~0x3) >> 9));
 
-	data = (u8 *) priv->maint_win + offset;
+	/* 16MB maintenance windows possible */
+	/* allow only aligned access to maintenance registers */
+	if (offset > (0x1000000 - len) || !IS_ALIGNED(offset, len))
+		return -EINVAL;
+
+	out_be32(&priv->maint_atmu_regs->rowtar,
+		 (destid << 22) | (hopcount << 12) | (offset >> 12));
+	out_be32(&priv->maint_atmu_regs->rowtear,  (destid >> 10));
+
+	data = (u8 *) priv->maint_win + (offset & (RIO_MAINT_WIN_SIZE - 1));
 	switch (len) {
 	case 1:
 		out_8((u8 *) data, val);
@@ -333,9 +450,11 @@
 	case 2:
 		out_be16((u16 *) data, val);
 		break;
-	default:
+	case 4:
 		out_be32((u32 *) data, val);
 		break;
+	default:
+		return -EINVAL;
 	}
 
 	return 0;
@@ -930,6 +1049,223 @@
 	return rc;
 }
 
+/**
+ * fsl_rio_port_write_handler - MPC85xx port write interrupt handler
+ * @irq: Linux interrupt number
+ * @dev_instance: Pointer to interrupt-specific data
+ *
+ * Handles port write interrupts. Parses a list of registered
+ * port write event handlers and executes a matching event handler.
+ */
+static irqreturn_t
+fsl_rio_port_write_handler(int irq, void *dev_instance)
+{
+	u32 ipwmr, ipwsr;
+	struct rio_mport *port = (struct rio_mport *)dev_instance;
+	struct rio_priv *priv = port->priv;
+	u32 epwisr, tmp;
+
+	ipwmr = in_be32(&priv->msg_regs->pwmr);
+	ipwsr = in_be32(&priv->msg_regs->pwsr);
+
+	epwisr = in_be32(priv->regs_win + RIO_EPWISR);
+	if (epwisr & 0x80000000) {
+		tmp = in_be32(priv->regs_win + RIO_LTLEDCSR);
+		pr_info("RIO_LTLEDCSR = 0x%x\n", tmp);
+		out_be32(priv->regs_win + RIO_LTLEDCSR, 0);
+	}
+
+	if (!(epwisr & 0x00000001))
+		return IRQ_HANDLED;
+
+#ifdef DEBUG_PW
+	pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr);
+	if (ipwsr & RIO_IPWSR_QF)
+		pr_debug(" QF");
+	if (ipwsr & RIO_IPWSR_TE)
+		pr_debug(" TE");
+	if (ipwsr & RIO_IPWSR_QFI)
+		pr_debug(" QFI");
+	if (ipwsr & RIO_IPWSR_PWD)
+		pr_debug(" PWD");
+	if (ipwsr & RIO_IPWSR_PWB)
+		pr_debug(" PWB");
+	pr_debug(" )\n");
+#endif
+	out_be32(&priv->msg_regs->pwsr,
+		 ipwsr & (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD));
+
+	if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) {
+		priv->port_write_msg.err_count++;
+		pr_info("RIO: Port-Write Transaction Err (%d)\n",
+			 priv->port_write_msg.err_count);
+	}
+	if (ipwsr & RIO_IPWSR_PWD) {
+		priv->port_write_msg.discard_count++;
+		pr_info("RIO: Port Discarded Port-Write Msg(s) (%d)\n",
+			 priv->port_write_msg.discard_count);
+	}
+
+	/* Schedule deferred processing if PW was received */
+	if (ipwsr & RIO_IPWSR_QFI) {
+		/* Save PW message (if there is room in FIFO),
+		 * otherwise discard it.
+		 */
+		if (kfifo_avail(&priv->pw_fifo) >= RIO_PW_MSG_SIZE) {
+			priv->port_write_msg.msg_count++;
+			kfifo_in(&priv->pw_fifo, priv->port_write_msg.virt,
+				 RIO_PW_MSG_SIZE);
+		} else {
+			priv->port_write_msg.discard_count++;
+			pr_info("RIO: ISR Discarded Port-Write Msg(s) (%d)\n",
+				 priv->port_write_msg.discard_count);
+		}
+		schedule_work(&priv->pw_work);
+	}
+
+	/* Issue Clear Queue command. This allows another
+	 * port-write to be received.
+	 */
+	out_be32(&priv->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ);
+
+	return IRQ_HANDLED;
+}
+
+static void fsl_pw_dpc(struct work_struct *work)
+{
+	struct rio_priv *priv = container_of(work, struct rio_priv, pw_work);
+	unsigned long flags;
+	u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)];
+
+	/*
+	 * Process port-write messages
+	 */
+	spin_lock_irqsave(&priv->pw_fifo_lock, flags);
+	while (kfifo_out(&priv->pw_fifo, (unsigned char *)msg_buffer,
+			 RIO_PW_MSG_SIZE)) {
+		/* Process one message */
+		spin_unlock_irqrestore(&priv->pw_fifo_lock, flags);
+#ifdef DEBUG_PW
+		{
+		u32 i;
+		pr_debug("%s : Port-Write Message:", __func__);
+		for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); i++) {
+			if ((i%4) == 0)
+				pr_debug("\n0x%02x: 0x%08x", i*4,
+					 msg_buffer[i]);
+			else
+				pr_debug(" 0x%08x", msg_buffer[i]);
+		}
+		pr_debug("\n");
+		}
+#endif
+		/* Pass the port-write message to RIO core for processing */
+		rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer);
+		spin_lock_irqsave(&priv->pw_fifo_lock, flags);
+	}
+	spin_unlock_irqrestore(&priv->pw_fifo_lock, flags);
+}
+
+/**
+ * fsl_rio_pw_enable - enable/disable port-write interface init
+ * @mport: Master port implementing the port write unit
+ * @enable:    1=enable; 0=disable port-write message handling
+ */
+static int fsl_rio_pw_enable(struct rio_mport *mport, int enable)
+{
+	struct rio_priv *priv = mport->priv;
+	u32 rval;
+
+	rval = in_be32(&priv->msg_regs->pwmr);
+
+	if (enable)
+		rval |= RIO_IPWMR_PWE;
+	else
+		rval &= ~RIO_IPWMR_PWE;
+
+	out_be32(&priv->msg_regs->pwmr, rval);
+
+	return 0;
+}
+
+/**
+ * fsl_rio_port_write_init - MPC85xx port write interface init
+ * @mport: Master port implementing the port write unit
+ *
+ * Initializes port write unit hardware and DMA buffer
+ * ring. Called from fsl_rio_setup(). Returns %0 on success
+ * or %-ENOMEM on failure.
+ */
+static int fsl_rio_port_write_init(struct rio_mport *mport)
+{
+	struct rio_priv *priv = mport->priv;
+	int rc = 0;
+
+	/* Following configurations require a disabled port write controller */
+	out_be32(&priv->msg_regs->pwmr,
+		 in_be32(&priv->msg_regs->pwmr) & ~RIO_IPWMR_PWE);
+
+	/* Initialize port write */
+	priv->port_write_msg.virt = dma_alloc_coherent(priv->dev,
+					RIO_PW_MSG_SIZE,
+					&priv->port_write_msg.phys, GFP_KERNEL);
+	if (!priv->port_write_msg.virt) {
+		pr_err("RIO: unable allocate port write queue\n");
+		return -ENOMEM;
+	}
+
+	priv->port_write_msg.err_count = 0;
+	priv->port_write_msg.discard_count = 0;
+
+	/* Point dequeue/enqueue pointers at first entry */
+	out_be32(&priv->msg_regs->epwqbar, 0);
+	out_be32(&priv->msg_regs->pwqbar, (u32) priv->port_write_msg.phys);
+
+	pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n",
+		 in_be32(&priv->msg_regs->epwqbar),
+		 in_be32(&priv->msg_regs->pwqbar));
+
+	/* Clear interrupt status IPWSR */
+	out_be32(&priv->msg_regs->pwsr,
+		 (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD));
+
+	/* Configure port write contoller for snooping enable all reporting,
+	   clear queue full */
+	out_be32(&priv->msg_regs->pwmr,
+		 RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ);
+
+
+	/* Hook up port-write handler */
+	rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler, 0,
+			 "port-write", (void *)mport);
+	if (rc < 0) {
+		pr_err("MPC85xx RIO: unable to request inbound doorbell irq");
+		goto err_out;
+	}
+
+	INIT_WORK(&priv->pw_work, fsl_pw_dpc);
+	spin_lock_init(&priv->pw_fifo_lock);
+	if (kfifo_alloc(&priv->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) {
+		pr_err("FIFO allocation failed\n");
+		rc = -ENOMEM;
+		goto err_out_irq;
+	}
+
+	pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n",
+		 in_be32(&priv->msg_regs->pwmr),
+		 in_be32(&priv->msg_regs->pwsr));
+
+	return rc;
+
+err_out_irq:
+	free_irq(IRQ_RIO_PW(mport), (void *)mport);
+err_out:
+	dma_free_coherent(priv->dev, RIO_PW_MSG_SIZE,
+			  priv->port_write_msg.virt,
+			  priv->port_write_msg.phys);
+	return rc;
+}
+
 static char *cmdline = NULL;
 
 static int fsl_rio_get_hdid(int index)
@@ -1057,7 +1393,7 @@
 	dev_info(&dev->dev, "LAW start 0x%016llx, size 0x%016llx.\n",
 			law_start, law_size);
 
-	ops = kmalloc(sizeof(struct rio_ops), GFP_KERNEL);
+	ops = kzalloc(sizeof(struct rio_ops), GFP_KERNEL);
 	if (!ops) {
 		rc = -ENOMEM;
 		goto err_ops;
@@ -1067,6 +1403,7 @@
 	ops->cread = fsl_rio_config_read;
 	ops->cwrite = fsl_rio_config_write;
 	ops->dsend = fsl_rio_doorbell_send;
+	ops->pwenable = fsl_rio_pw_enable;
 
 	port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
 	if (!port) {
@@ -1089,11 +1426,12 @@
 	port->iores.flags = IORESOURCE_MEM;
 	port->iores.name = "rio_io_win";
 
+	priv->pwirq   = irq_of_parse_and_map(dev->node, 0);
 	priv->bellirq = irq_of_parse_and_map(dev->dev.of_node, 2);
 	priv->txirq = irq_of_parse_and_map(dev->dev.of_node, 3);
 	priv->rxirq = irq_of_parse_and_map(dev->dev.of_node, 4);
-	dev_info(&dev->dev, "bellirq: %d, txirq: %d, rxirq %d\n", priv->bellirq,
-				priv->txirq, priv->rxirq);
+	dev_info(&dev->dev, "pwirq: %d, bellirq: %d, txirq: %d, rxirq %d\n",
+		 priv->pwirq, priv->bellirq, priv->txirq, priv->rxirq);
 
 	rio_init_dbell_res(&port->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff);
 	rio_init_mbox_res(&port->riores[RIO_INB_MBOX_RESOURCE], 0, 0);
@@ -1109,6 +1447,7 @@
 	rio_register_mport(port);
 
 	priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1);
+	rio_regs_win = priv->regs_win;
 
 	/* Probe the master port phy type */
 	ccsr = in_be32(priv->regs_win + RIO_CCSR);
@@ -1166,7 +1505,8 @@
 
 	/* Configure maintenance transaction window */
 	out_be32(&priv->maint_atmu_regs->rowbar, law_start >> 12);
-	out_be32(&priv->maint_atmu_regs->rowar, 0x80077015);	/* 4M */
+	out_be32(&priv->maint_atmu_regs->rowar,
+		 0x80077000 | (ilog2(RIO_MAINT_WIN_SIZE) - 1));
 
 	priv->maint_win = ioremap(law_start, RIO_MAINT_WIN_SIZE);
 
@@ -1175,6 +1515,12 @@
 			(law_start + RIO_MAINT_WIN_SIZE) >> 12);
 	out_be32(&priv->dbell_atmu_regs->rowar, 0x8004200b);	/* 4k */
 	fsl_rio_doorbell_init(port);
+	fsl_rio_port_write_init(port);
+
+	saved_mcheck_exception = ppc_md.machine_check_exception;
+	ppc_md.machine_check_exception = fsl_rio_mcheck_exception;
+	/* Ensure that RFXE is set */
+	mtspr(SPRN_HID1, (mfspr(SPRN_HID1) | 0x20000));
 
 	return 0;
 err:
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 79d0ca0..bee1c0f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -102,6 +102,7 @@
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_BZIP2
 	select HAVE_KERNEL_LZMA
+	select HAVE_KERNEL_LZO
 	select ARCH_INLINE_SPIN_TRYLOCK
 	select ARCH_INLINE_SPIN_TRYLOCK_BH
 	select ARCH_INLINE_SPIN_LOCK
@@ -479,13 +480,6 @@
 	  Everybody who wants to run Linux under VM should select this
 	  option.
 
-config CMM_PROC
-	bool "/proc interface to cooperative memory management"
-	depends on CMM
-	help
-	  Select this option to enable the /proc interface to the
-	  cooperative memory management.
-
 config CMM_IUCV
 	bool "IUCV special message interface to cooperative memory management"
 	depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile
index 6e4a67a..1c999f7 100644
--- a/arch/s390/boot/compressed/Makefile
+++ b/arch/s390/boot/compressed/Makefile
@@ -7,7 +7,7 @@
 BITS := $(if $(CONFIG_64BIT),64,31)
 
 targets	:= vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
-	   vmlinux.bin.lzma misc.o piggy.o sizes.h head$(BITS).o
+	   vmlinux.bin.lzma vmlinux.bin.lzo misc.o piggy.o sizes.h head$(BITS).o
 
 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += $(cflags-y)
@@ -47,6 +47,7 @@
 suffix-$(CONFIG_KERNEL_GZIP)  := gz
 suffix-$(CONFIG_KERNEL_BZIP2) := bz2
 suffix-$(CONFIG_KERNEL_LZMA)  := lzma
+suffix-$(CONFIG_KERNEL_LZO)  := lzo
 
 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
 	$(call if_changed,gzip)
@@ -54,6 +55,8 @@
 	$(call if_changed,bzip2)
 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
 	$(call if_changed,lzma)
+$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
+	$(call if_changed,lzo)
 
 LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
diff --git a/arch/s390/boot/compressed/misc.c b/arch/s390/boot/compressed/misc.c
index 14e0479..0851eb1 100644
--- a/arch/s390/boot/compressed/misc.c
+++ b/arch/s390/boot/compressed/misc.c
@@ -50,6 +50,10 @@
 #include "../../../../lib/decompress_unlzma.c"
 #endif
 
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
 extern _sclp_print_early(const char *);
 
 int puts(const char *s)
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index 451bfbb..76daea1 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -15,6 +15,7 @@
 
 #include <linux/compiler.h>
 #include <linux/types.h>
+#include <asm/system.h>
 
 #define ATOMIC_INIT(i)  { (i) }
 
@@ -274,6 +275,7 @@
 static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u)
 {
 	long long c, old;
+
 	c = atomic64_read(v);
 	for (;;) {
 		if (unlikely(c == u))
@@ -286,6 +288,23 @@
 	return c != u;
 }
 
+static inline long long atomic64_dec_if_positive(atomic64_t *v)
+{
+	long long c, old, dec;
+
+	c = atomic64_read(v);
+	for (;;) {
+		dec = c - 1;
+		if (unlikely(dec < 0))
+			break;
+		old = atomic64_cmpxchg((v), c, dec);
+		if (likely(old == c))
+			break;
+		c = old;
+	}
+	return dec;
+}
+
 #define atomic64_add(_i, _v)		atomic64_add_return(_i, _v)
 #define atomic64_add_negative(_i, _v)	(atomic64_add_return(_i, _v) < 0)
 #define atomic64_inc(_v)		atomic64_add_return(1, _v)
diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h
index f4bd346..1c0030f 100644
--- a/arch/s390/include/asm/ccwdev.h
+++ b/arch/s390/include/asm/ccwdev.h
@@ -91,6 +91,14 @@
 	void (*handler) (struct ccw_device *, unsigned long, struct irb *);
 };
 
+/*
+ * Possible CIO actions triggered by the unit check handler.
+ */
+enum uc_todo {
+	UC_TODO_RETRY,
+	UC_TODO_RETRY_ON_NEW_PATH,
+	UC_TODO_STOP
+};
 
 /**
  * struct ccw driver - device driver for channel attached devices
@@ -107,6 +115,7 @@
  * @freeze: callback for freezing during hibernation snapshotting
  * @thaw: undo work done in @freeze
  * @restore: callback for restoring after hibernation
+ * @uc_handler: callback for unit check handler
  * @driver: embedded device driver structure
  * @name: device driver name
  */
@@ -124,6 +133,7 @@
 	int (*freeze)(struct ccw_device *);
 	int (*thaw) (struct ccw_device *);
 	int (*restore)(struct ccw_device *);
+	enum uc_todo (*uc_handler) (struct ccw_device *, struct irb *);
 	struct device_driver driver;
 	char *name;
 };
diff --git a/arch/s390/include/asm/scatterlist.h b/arch/s390/include/asm/scatterlist.h
index 35d786f..be44d94 100644
--- a/arch/s390/include/asm/scatterlist.h
+++ b/arch/s390/include/asm/scatterlist.h
@@ -1 +1,3 @@
+#define ISA_DMA_THRESHOLD	(~0UL)
+
 #include <asm-generic/scatterlist.h>
diff --git a/arch/s390/include/asm/sfp-util.h b/arch/s390/include/asm/sfp-util.h
index 7d43fee..0addc64 100644
--- a/arch/s390/include/asm/sfp-util.h
+++ b/arch/s390/include/asm/sfp-util.h
@@ -73,3 +73,5 @@
 #define UDIV_NEEDS_NORMALIZATION 0
 
 #define abort() return 0
+
+#define __BYTE_ORDER __BIG_ENDIAN
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index d9b490a..5232278 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -132,8 +132,6 @@
 	DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
 	DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags));
 	DEFINE(__LC_FTRACE_FUNC, offsetof(struct _lowcore, ftrace_func));
-	DEFINE(__LC_SIE_HOOK, offsetof(struct _lowcore, sie_hook));
-	DEFINE(__LC_CMF_HPP, offsetof(struct _lowcore, cmf_hpp));
 	DEFINE(__LC_IRB, offsetof(struct _lowcore, irb));
 	DEFINE(__LC_CPU_TIMER_SAVE_AREA, offsetof(struct _lowcore, cpu_timer_save_area));
 	DEFINE(__LC_CLOCK_COMP_SAVE_AREA, offsetof(struct _lowcore, clock_comp_save_area));
@@ -154,6 +152,8 @@
 	DEFINE(__LC_FP_CREG_SAVE_AREA, offsetof(struct _lowcore, fpt_creg_save_area));
 	DEFINE(__LC_LAST_BREAK, offsetof(struct _lowcore, breaking_event_addr));
 	DEFINE(__LC_VDSO_PER_CPU, offsetof(struct _lowcore, vdso_per_cpu_data));
+	DEFINE(__LC_SIE_HOOK, offsetof(struct _lowcore, sie_hook));
+	DEFINE(__LC_CMF_HPP, offsetof(struct _lowcore, cmf_hpp));
 #endif /* CONFIG_32BIT */
 	return 0;
 }
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 178d925..e7192e1 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -65,7 +65,7 @@
 	ltgr	%r3,%r3
 	jz	0f
 	basr	%r14,%r3
-	0:
+0:
 #endif
 	.endm
 
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 3d34eef..2a3d2bf 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -63,6 +63,8 @@
 	case 0x0b:	/* bsm	 */
 	case 0x83:	/* diag  */
 	case 0x44:	/* ex	 */
+	case 0xac:	/* stnsm */
+	case 0xad:	/* stosm */
 		return -EINVAL;
 	}
 	switch (*(__u16 *) instruction) {
@@ -72,6 +74,7 @@
 	case 0xb258:	/* bsg	 */
 	case 0xb218:	/* pc	 */
 	case 0xb228:	/* pt	 */
+	case 0xb98d:	/* epsw	 */
 		return -EINVAL;
 	}
 	return 0;
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 7d89324..c8e8e13 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -401,7 +401,6 @@
 	lc->io_new_psw.mask = psw_kernel_bits;
 	lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
 	lc->clock_comparator = -1ULL;
-	lc->cmf_hpp = -1ULL;
 	lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE;
 	lc->async_stack = (unsigned long)
 		__alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0) + ASYNC_SIZE;
@@ -418,6 +417,7 @@
 		__ctl_set_bit(14, 29);
 	}
 #else
+	lc->cmf_hpp = -1ULL;
 	lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
 #endif
 	lc->sync_enter_timer = S390_lowcore.sync_enter_timer;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index e4d98de..541053e 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -944,21 +944,21 @@
 	struct cpu *c = &per_cpu(cpu_devices, cpu);
 	struct sys_device *s = &c->sysdev;
 	struct s390_idle_data *idle;
+	int err = 0;
 
 	switch (action) {
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		idle = &per_cpu(s390_idle, cpu);
 		memset(idle, 0, sizeof(struct s390_idle_data));
-		if (sysfs_create_group(&s->kobj, &cpu_online_attr_group))
-			return NOTIFY_BAD;
+		err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
 		break;
 	case CPU_DEAD:
 	case CPU_DEAD_FROZEN:
 		sysfs_remove_group(&s->kobj, &cpu_online_attr_group);
 		break;
 	}
-	return NOTIFY_OK;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block __cpuinitdata smp_cpu_nb = {
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
index 2f4b687c..a725158 100644
--- a/arch/s390/kvm/Kconfig
+++ b/arch/s390/kvm/Kconfig
@@ -33,17 +33,6 @@
 
 	  If unsure, say N.
 
-config KVM_AWARE_CMF
-	depends on KVM
-	bool "KVM aware sampling"
-	---help---
-	  This option enhances the sampling data from the CPU Measurement
-	  Facility with additional information, that allows to distinguish
-	  guest(s) and host when using the kernel based virtual machine
-	  functionality.
-
-	  If unsure, say N.
-
 # OK, it's a little counter-intuitive to do this, but it puts it neatly under
 # the virtualization menu.
 source drivers/vhost/Kconfig
diff --git a/arch/s390/kvm/sie64a.S b/arch/s390/kvm/sie64a.S
index 31646bd..7e9d30d 100644
--- a/arch/s390/kvm/sie64a.S
+++ b/arch/s390/kvm/sie64a.S
@@ -32,12 +32,10 @@
 
 
 	.macro SPP newpp
-#ifdef CONFIG_KVM_AWARE_CMF
 	tm	__LC_MACHINE_FLAGS+6,0x20	# MACHINE_FLAG_SPP
 	jz	0f
 	.insn	s,0xb2800000,\newpp
-	0:
-#endif
+0:
 	.endm
 
 sie_irq_handler:
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index f87b347..eb6a2ef 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -1,11 +1,9 @@
 /*
- *  arch/s390/mm/cmm.c
- *
- *  S390 version
- *    Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
  *  Collaborative memory management interface.
+ *
+ *    Copyright IBM Corp 2003,2010
+ *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
+ *
  */
 
 #include <linux/errno.h>
@@ -20,9 +18,9 @@
 #include <linux/kthread.h>
 #include <linux/oom.h>
 #include <linux/suspend.h>
+#include <linux/uaccess.h>
 
 #include <asm/pgalloc.h>
-#include <asm/uaccess.h>
 #include <asm/diag.h>
 
 static char *sender = "VMRMSVM";
@@ -53,14 +51,14 @@
 static DEFINE_SPINLOCK(cmm_lock);
 
 static struct task_struct *cmm_thread_ptr;
-static wait_queue_head_t cmm_thread_wait;
-static struct timer_list cmm_timer;
+static DECLARE_WAIT_QUEUE_HEAD(cmm_thread_wait);
+static DEFINE_TIMER(cmm_timer, NULL, 0, 0);
 
 static void cmm_timer_fn(unsigned long);
 static void cmm_set_timer(void);
 
-static long
-cmm_alloc_pages(long nr, long *counter, struct cmm_page_array **list)
+static long cmm_alloc_pages(long nr, long *counter,
+			    struct cmm_page_array **list)
 {
 	struct cmm_page_array *pa, *npa;
 	unsigned long addr;
@@ -99,8 +97,7 @@
 	return nr;
 }
 
-static long
-cmm_free_pages(long nr, long *counter, struct cmm_page_array **list)
+static long cmm_free_pages(long nr, long *counter, struct cmm_page_array **list)
 {
 	struct cmm_page_array *pa;
 	unsigned long addr;
@@ -140,11 +137,10 @@
 }
 
 static struct notifier_block cmm_oom_nb = {
-	.notifier_call = cmm_oom_notify
+	.notifier_call = cmm_oom_notify,
 };
 
-static int
-cmm_thread(void *dummy)
+static int cmm_thread(void *dummy)
 {
 	int rc;
 
@@ -170,7 +166,7 @@
 				cmm_timed_pages_target = cmm_timed_pages;
 		} else if (cmm_timed_pages_target < cmm_timed_pages) {
 			cmm_free_pages(1, &cmm_timed_pages,
-			       	       &cmm_timed_page_list);
+				       &cmm_timed_page_list);
 		}
 		if (cmm_timed_pages > 0 && !timer_pending(&cmm_timer))
 			cmm_set_timer();
@@ -178,14 +174,12 @@
 	return 0;
 }
 
-static void
-cmm_kick_thread(void)
+static void cmm_kick_thread(void)
 {
 	wake_up(&cmm_thread_wait);
 }
 
-static void
-cmm_set_timer(void)
+static void cmm_set_timer(void)
 {
 	if (cmm_timed_pages_target <= 0 || cmm_timeout_seconds <= 0) {
 		if (timer_pending(&cmm_timer))
@@ -202,8 +196,7 @@
 	add_timer(&cmm_timer);
 }
 
-static void
-cmm_timer_fn(unsigned long ignored)
+static void cmm_timer_fn(unsigned long ignored)
 {
 	long nr;
 
@@ -216,57 +209,49 @@
 	cmm_set_timer();
 }
 
-void
-cmm_set_pages(long nr)
+static void cmm_set_pages(long nr)
 {
 	cmm_pages_target = nr;
 	cmm_kick_thread();
 }
 
-long
-cmm_get_pages(void)
+static long cmm_get_pages(void)
 {
 	return cmm_pages;
 }
 
-void
-cmm_add_timed_pages(long nr)
+static void cmm_add_timed_pages(long nr)
 {
 	cmm_timed_pages_target += nr;
 	cmm_kick_thread();
 }
 
-long
-cmm_get_timed_pages(void)
+static long cmm_get_timed_pages(void)
 {
 	return cmm_timed_pages;
 }
 
-void
-cmm_set_timeout(long nr, long seconds)
+static void cmm_set_timeout(long nr, long seconds)
 {
 	cmm_timeout_pages = nr;
 	cmm_timeout_seconds = seconds;
 	cmm_set_timer();
 }
 
-static int
-cmm_skip_blanks(char *cp, char **endp)
+static int cmm_skip_blanks(char *cp, char **endp)
 {
 	char *str;
 
-	for (str = cp; *str == ' ' || *str == '\t'; str++);
+	for (str = cp; *str == ' ' || *str == '\t'; str++)
+		;
 	*endp = str;
 	return str != cp;
 }
 
-#ifdef CONFIG_CMM_PROC
-
 static struct ctl_table cmm_table[];
 
-static int
-cmm_pages_handler(ctl_table *ctl, int write,
-		  void __user *buffer, size_t *lenp, loff_t *ppos)
+static int cmm_pages_handler(ctl_table *ctl, int write, void __user *buffer,
+			     size_t *lenp, loff_t *ppos)
 {
 	char buf[16], *p;
 	long nr;
@@ -305,9 +290,8 @@
 	return 0;
 }
 
-static int
-cmm_timeout_handler(ctl_table *ctl, int write,
-		    void __user *buffer, size_t *lenp, loff_t *ppos)
+static int cmm_timeout_handler(ctl_table *ctl, int write,  void __user *buffer,
+			       size_t *lenp, loff_t *ppos)
 {
 	char buf[64], *p;
 	long nr, seconds;
@@ -370,12 +354,10 @@
 	},
 	{ }
 };
-#endif
 
 #ifdef CONFIG_CMM_IUCV
 #define SMSG_PREFIX "CMM"
-static void
-cmm_smsg_target(const char *from, char *msg)
+static void cmm_smsg_target(const char *from, char *msg)
 {
 	long nr, seconds;
 
@@ -445,16 +427,13 @@
 	.notifier_call = cmm_power_event,
 };
 
-static int
-cmm_init (void)
+static int cmm_init(void)
 {
 	int rc = -ENOMEM;
 
-#ifdef CONFIG_CMM_PROC
 	cmm_sysctl_header = register_sysctl_table(cmm_dir_table);
 	if (!cmm_sysctl_header)
 		goto out_sysctl;
-#endif
 #ifdef CONFIG_CMM_IUCV
 	rc = smsg_register_callback(SMSG_PREFIX, cmm_smsg_target);
 	if (rc < 0)
@@ -466,8 +445,6 @@
 	rc = register_pm_notifier(&cmm_power_notifier);
 	if (rc)
 		goto out_pm;
-	init_waitqueue_head(&cmm_thread_wait);
-	init_timer(&cmm_timer);
 	cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
 	rc = IS_ERR(cmm_thread_ptr) ? PTR_ERR(cmm_thread_ptr) : 0;
 	if (rc)
@@ -483,36 +460,26 @@
 	smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
 out_smsg:
 #endif
-#ifdef CONFIG_CMM_PROC
 	unregister_sysctl_table(cmm_sysctl_header);
 out_sysctl:
-#endif
+	del_timer_sync(&cmm_timer);
 	return rc;
 }
+module_init(cmm_init);
 
-static void
-cmm_exit(void)
+static void cmm_exit(void)
 {
-	kthread_stop(cmm_thread_ptr);
-	unregister_pm_notifier(&cmm_power_notifier);
-	unregister_oom_notifier(&cmm_oom_nb);
-	cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
-	cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
-#ifdef CONFIG_CMM_PROC
 	unregister_sysctl_table(cmm_sysctl_header);
-#endif
 #ifdef CONFIG_CMM_IUCV
 	smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
 #endif
+	unregister_pm_notifier(&cmm_power_notifier);
+	unregister_oom_notifier(&cmm_oom_nb);
+	kthread_stop(cmm_thread_ptr);
+	del_timer_sync(&cmm_timer);
+	cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
+	cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
 }
-
-module_init(cmm_init);
 module_exit(cmm_exit);
 
-EXPORT_SYMBOL(cmm_set_pages);
-EXPORT_SYMBOL(cmm_get_pages);
-EXPORT_SYMBOL(cmm_add_timed_pages);
-EXPORT_SYMBOL(cmm_get_timed_pages);
-EXPORT_SYMBOL(cmm_set_timeout);
-
 MODULE_LICENSE("GPL");
diff --git a/arch/score/include/asm/scatterlist.h b/arch/score/include/asm/scatterlist.h
index 9f533b8..4fa1a66 100644
--- a/arch/score/include/asm/scatterlist.h
+++ b/arch/score/include/asm/scatterlist.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_SCORE_SCATTERLIST_H
 #define _ASM_SCORE_SCATTERLIST_H
 
+#define ISA_DMA_THRESHOLD	(~0UL)
+
 #include <asm-generic/scatterlist.h>
 
 #endif /* _ASM_SCORE_SCATTERLIST_H */
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 0e318c9..c5ee4ce 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -186,6 +186,9 @@
 config NEED_DMA_MAP_STATE
 	def_bool DMA_NONCOHERENT
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index d4104ce..6c4bbba 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -436,29 +436,6 @@
 					     0, sizeof(struct pt_dspregs),
 					     (const void __user *)data);
 #endif
-#ifdef CONFIG_BINFMT_ELF_FDPIC
-	case PTRACE_GETFDPIC: {
-		unsigned long tmp = 0;
-
-		switch (addr) {
-		case PTRACE_GETFDPIC_EXEC:
-			tmp = child->mm->context.exec_fdpic_loadmap;
-			break;
-		case PTRACE_GETFDPIC_INTERP:
-			tmp = child->mm->context.interp_fdpic_loadmap;
-			break;
-		default:
-			break;
-		}
-
-		ret = 0;
-		if (put_user(tmp, datap)) {
-			ret = -EFAULT;
-			break;
-		}
-		break;
-	}
-#endif
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;
diff --git a/arch/sh/math-emu/sfp-util.h b/arch/sh/math-emu/sfp-util.h
index e8526021..8ae1bd3 100644
--- a/arch/sh/math-emu/sfp-util.h
+++ b/arch/sh/math-emu/sfp-util.h
@@ -66,3 +66,7 @@
   } while (0)
 
 #define abort()	return 0
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
+
+
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index d6781ce..6f1470b 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -133,6 +133,9 @@
 config NEED_DMA_MAP_STATE
 	def_bool y
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config GENERIC_ISA_DMA
 	bool
 	default y if SPARC32
diff --git a/arch/sparc/include/asm/scatterlist.h b/arch/sparc/include/asm/scatterlist.h
index d112025..433e45f 100644
--- a/arch/sparc/include/asm/scatterlist.h
+++ b/arch/sparc/include/asm/scatterlist.h
@@ -1,8 +1,9 @@
 #ifndef _SPARC_SCATTERLIST_H
 #define _SPARC_SCATTERLIST_H
 
-#define sg_dma_len(sg)     	((sg)->dma_length)
-
 #include <asm-generic/scatterlist.h>
 
+#define ISA_DMA_THRESHOLD	(~0UL)
+#define ARCH_HAS_SG_CHAIN
+
 #endif /* !(_SPARC_SCATTERLIST_H) */
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 34ce49f..0ec92c8 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -92,6 +92,8 @@
 
 	/* Enabled/disable state.  */
 	int			enabled;
+
+	unsigned int		group_flag;
 };
 DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, };
 
@@ -981,53 +983,6 @@
 	return n;
 }
 
-static void event_sched_in(struct perf_event *event)
-{
-	event->state = PERF_EVENT_STATE_ACTIVE;
-	event->oncpu = smp_processor_id();
-	event->tstamp_running += event->ctx->time - event->tstamp_stopped;
-	if (is_software_event(event))
-		event->pmu->enable(event);
-}
-
-int hw_perf_group_sched_in(struct perf_event *group_leader,
-			   struct perf_cpu_context *cpuctx,
-			   struct perf_event_context *ctx)
-{
-	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
-	struct perf_event *sub;
-	int n0, n;
-
-	if (!sparc_pmu)
-		return 0;
-
-	n0 = cpuc->n_events;
-	n = collect_events(group_leader, perf_max_events - n0,
-			   &cpuc->event[n0], &cpuc->events[n0],
-			   &cpuc->current_idx[n0]);
-	if (n < 0)
-		return -EAGAIN;
-	if (check_excludes(cpuc->event, n0, n))
-		return -EINVAL;
-	if (sparc_check_constraints(cpuc->event, cpuc->events, n + n0))
-		return -EAGAIN;
-	cpuc->n_events = n0 + n;
-	cpuc->n_added += n;
-
-	cpuctx->active_oncpu += n;
-	n = 1;
-	event_sched_in(group_leader);
-	list_for_each_entry(sub, &group_leader->sibling_list, group_entry) {
-		if (sub->state != PERF_EVENT_STATE_OFF) {
-			event_sched_in(sub);
-			n++;
-		}
-	}
-	ctx->nr_active += n;
-
-	return 1;
-}
-
 static int sparc_pmu_enable(struct perf_event *event)
 {
 	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
@@ -1045,11 +1000,20 @@
 	cpuc->events[n0] = event->hw.event_base;
 	cpuc->current_idx[n0] = PIC_NO_INDEX;
 
+	/*
+	 * If group events scheduling transaction was started,
+	 * skip the schedulability test here, it will be peformed
+	 * at commit time(->commit_txn) as a whole
+	 */
+	if (cpuc->group_flag & PERF_EVENT_TXN_STARTED)
+		goto nocheck;
+
 	if (check_excludes(cpuc->event, n0, 1))
 		goto out;
 	if (sparc_check_constraints(cpuc->event, cpuc->events, n0 + 1))
 		goto out;
 
+nocheck:
 	cpuc->n_events++;
 	cpuc->n_added++;
 
@@ -1129,11 +1093,61 @@
 	return 0;
 }
 
+/*
+ * Start group events scheduling transaction
+ * Set the flag to make pmu::enable() not perform the
+ * schedulability test, it will be performed at commit time
+ */
+static void sparc_pmu_start_txn(const struct pmu *pmu)
+{
+	struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events);
+
+	cpuhw->group_flag |= PERF_EVENT_TXN_STARTED;
+}
+
+/*
+ * Stop group events scheduling transaction
+ * Clear the flag and pmu::enable() will perform the
+ * schedulability test.
+ */
+static void sparc_pmu_cancel_txn(const struct pmu *pmu)
+{
+	struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events);
+
+	cpuhw->group_flag &= ~PERF_EVENT_TXN_STARTED;
+}
+
+/*
+ * Commit group events scheduling transaction
+ * Perform the group schedulability test as a whole
+ * Return 0 if success
+ */
+static int sparc_pmu_commit_txn(const struct pmu *pmu)
+{
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	int n;
+
+	if (!sparc_pmu)
+		return -EINVAL;
+
+	cpuc = &__get_cpu_var(cpu_hw_events);
+	n = cpuc->n_events;
+	if (check_excludes(cpuc->event, 0, n))
+		return -EINVAL;
+	if (sparc_check_constraints(cpuc->event, cpuc->events, n))
+		return -EAGAIN;
+
+	return 0;
+}
+
 static const struct pmu pmu = {
 	.enable		= sparc_pmu_enable,
 	.disable	= sparc_pmu_disable,
 	.read		= sparc_pmu_read,
 	.unthrottle	= sparc_pmu_unthrottle,
+	.start_txn	= sparc_pmu_start_txn,
+	.cancel_txn	= sparc_pmu_cancel_txn,
+	.commit_txn	= sparc_pmu_commit_txn,
 };
 
 const struct pmu *hw_perf_event_init(struct perf_event *event)
diff --git a/arch/sparc/math-emu/sfp-util_32.h b/arch/sparc/math-emu/sfp-util_32.h
index 0ea35af..d1b2aff3 100644
--- a/arch/sparc/math-emu/sfp-util_32.h
+++ b/arch/sparc/math-emu/sfp-util_32.h
@@ -107,3 +107,9 @@
 
 #define abort()								\
 	return 0
+
+#ifdef __BIG_ENDIAN
+#define __BYTE_ORDER __BIG_ENDIAN
+#else
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
diff --git a/arch/sparc/math-emu/sfp-util_64.h b/arch/sparc/math-emu/sfp-util_64.h
index d17c9bc..425d3cf 100644
--- a/arch/sparc/math-emu/sfp-util_64.h
+++ b/arch/sparc/math-emu/sfp-util_64.h
@@ -112,3 +112,9 @@
 
 #define abort() \
 	return 0
+
+#ifdef __BIG_ENDIAN
+#define __BYTE_ORDER __BIG_ENDIAN
+#else
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e0c619c..dcb0593 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -109,6 +109,9 @@
 config NEED_DMA_MAP_STATE
        def_bool (X86_64 || DMAR || DMA_API_DEBUG)
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config GENERIC_ISA_DMA
 	def_bool y
 
@@ -1703,6 +1706,10 @@
 	def_bool X86_64
 	depends on NUMA
 
+config USE_PERCPU_NUMA_NODE_ID
+	def_bool X86_64
+	depends on NUMA
+
 menu "Power management and ACPI options"
 
 config ARCH_HIBERNATION_HEADER
diff --git a/arch/x86/boot/compressed/relocs.c b/arch/x86/boot/compressed/relocs.c
index 7b1aaa2..89bbf4e 100644
--- a/arch/x86/boot/compressed/relocs.c
+++ b/arch/x86/boot/compressed/relocs.c
@@ -195,11 +195,11 @@
 
 
 
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if BYTE_ORDER == LITTLE_ENDIAN
 #define le16_to_cpu(val) (val)
 #define le32_to_cpu(val) (val)
 #endif
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if BYTE_ORDER == BIG_ENDIAN
 #define le16_to_cpu(val) bswap_16(val)
 #define le32_to_cpu(val) bswap_32(val)
 #endif
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 56f462c..aa2c39d 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -85,7 +85,6 @@
 extern int acpi_noirq;
 extern int acpi_strict;
 extern int acpi_disabled;
-extern int acpi_ht;
 extern int acpi_pci_disabled;
 extern int acpi_skip_timer_override;
 extern int acpi_use_timer_override;
@@ -97,7 +96,6 @@
 static inline void disable_acpi(void)
 {
 	acpi_disabled = 1;
-	acpi_ht = 0;
 	acpi_pci_disabled = 1;
 	acpi_noirq = 1;
 }
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index dca9c54..4681459 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -332,6 +332,7 @@
 #endif
 }
 
+#if __GNUC__ >= 4
 #define static_cpu_has(bit)					\
 (								\
 	__builtin_constant_p(boot_cpu_has(bit)) ?		\
@@ -340,6 +341,12 @@
 		__static_cpu_has(bit) :				\
 		boot_cpu_has(bit)				\
 )
+#else
+/*
+ * gcc 3.x is too stupid to do the static test; fall back to dynamic.
+ */
+#define static_cpu_has(bit) boot_cpu_has(bit)
+#endif
 
 #endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
 
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 6c3fdd6..f32a430 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -225,5 +225,13 @@
 static inline void mcheck_intel_therm_init(void) { }
 #endif
 
+/*
+ * Used by APEI to report memory error via /dev/mcelog
+ */
+
+struct cper_sec_mem_err;
+extern void apei_mce_report_mem_error(int corrected,
+				      struct cper_sec_mem_err *mem_err);
+
 #endif /* __KERNEL__ */
 #endif /* _ASM_X86_MCE_H */
diff --git a/arch/x86/include/asm/perf_event_p4.h b/arch/x86/include/asm/perf_event_p4.h
index b05400a..64a8ebf 100644
--- a/arch/x86/include/asm/perf_event_p4.h
+++ b/arch/x86/include/asm/perf_event_p4.h
@@ -89,7 +89,8 @@
 	P4_CCCR_ENABLE)
 
 /* HT mask */
-#define P4_CCCR_MASK_HT	(P4_CCCR_MASK | P4_CCCR_THREAD_ANY)
+#define P4_CCCR_MASK_HT				\
+	(P4_CCCR_MASK | P4_CCCR_OVF_PMI_T1 | P4_CCCR_THREAD_ANY)
 
 #define P4_GEN_ESCR_EMASK(class, name, bit)	\
 	class##__##name = ((1 << bit) << P4_ESCR_EVENTMASK_SHIFT)
diff --git a/arch/x86/include/asm/scatterlist.h b/arch/x86/include/asm/scatterlist.h
index 75af592..fb0b187 100644
--- a/arch/x86/include/asm/scatterlist.h
+++ b/arch/x86/include/asm/scatterlist.h
@@ -1,8 +1,9 @@
 #ifndef _ASM_X86_SCATTERLIST_H
 #define _ASM_X86_SCATTERLIST_H
 
-#define ISA_DMA_THRESHOLD (0x00ffffff)
-
 #include <asm-generic/scatterlist.h>
 
+#define ISA_DMA_THRESHOLD (0x00ffffff)
+#define ARCH_HAS_SG_CHAIN
+
 #endif /* _ASM_X86_SCATTERLIST_H */
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index 62ba940..f0b6e5d 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -239,8 +239,8 @@
 #define TS_USEDFPU		0x0001	/* FPU was used by this task
 					   this quantum (SMP) */
 #define TS_COMPAT		0x0002	/* 32bit syscall active (64BIT)*/
-#define TS_POLLING		0x0004	/* true if in idle loop
-					   and not sleeping */
+#define TS_POLLING		0x0004	/* idle task polling need_resched,
+					   skip sending interrupt */
 #define TS_RESTORE_SIGMASK	0x0008	/* restore signal mask in do_signal() */
 
 #define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index c5087d7..21899cc3 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -53,33 +53,29 @@
 extern int cpu_to_node_map[];
 
 /* Returns the number of the node containing CPU 'cpu' */
-static inline int cpu_to_node(int cpu)
+static inline int __cpu_to_node(int cpu)
 {
 	return cpu_to_node_map[cpu];
 }
-#define early_cpu_to_node(cpu)	cpu_to_node(cpu)
+#define early_cpu_to_node __cpu_to_node
+#define cpu_to_node __cpu_to_node
 
 #else /* CONFIG_X86_64 */
 
 /* Mappings between logical cpu number and node number */
 DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
 
-/* Returns the number of the current Node. */
-DECLARE_PER_CPU(int, node_number);
-#define numa_node_id()		percpu_read(node_number)
-
 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
-extern int cpu_to_node(int cpu);
+/*
+ * override generic percpu implementation of cpu_to_node
+ */
+extern int __cpu_to_node(int cpu);
+#define cpu_to_node __cpu_to_node
+
 extern int early_cpu_to_node(int cpu);
 
 #else	/* !CONFIG_DEBUG_PER_CPU_MAPS */
 
-/* Returns the number of the node containing CPU 'cpu' */
-static inline int cpu_to_node(int cpu)
-{
-	return per_cpu(x86_cpu_to_node_map, cpu);
-}
-
 /* Same function but used if called before per_cpu areas are setup */
 static inline int early_cpu_to_node(int cpu)
 {
@@ -170,6 +166,10 @@
 {
 	return 0;
 }
+/*
+ * indicate override:
+ */
+#define numa_node_id numa_node_id
 
 static inline int early_cpu_to_node(int cpu)
 {
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 488be46..60cc405 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -63,7 +63,6 @@
 int acpi_noirq;				/* skip ACPI IRQ initialization */
 int acpi_pci_disabled;		/* skip ACPI PCI scan and IRQ initialization */
 EXPORT_SYMBOL(acpi_pci_disabled);
-int acpi_ht __initdata = 1;	/* enable HT */
 
 int acpi_lapic;
 int acpi_ioapic;
@@ -1501,9 +1500,8 @@
 
 	/*
 	 * If acpi_disabled, bail out
-	 * One exception: acpi=ht continues far enough to enumerate LAPICs
 	 */
-	if (acpi_disabled && !acpi_ht)
+	if (acpi_disabled)
 		return; 
 
 	/*
@@ -1534,9 +1532,8 @@
 {
 	/*
 	 * If acpi_disabled, bail out
-	 * One exception: acpi=ht continues far enough to enumerate LAPICs
 	 */
-	if (acpi_disabled && !acpi_ht)
+	if (acpi_disabled)
 		return 1;
 
 	/*
@@ -1554,9 +1551,8 @@
 
 	/*
 	 * If acpi_disabled, bail out
-	 * One exception: acpi=ht continues far enough to enumerate LAPICs
 	 */
-	if (acpi_disabled && !acpi_ht)
+	if (acpi_disabled)
 		return 1;
 
 	acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
@@ -1591,21 +1587,12 @@
 	/* acpi=force to over-ride black-list */
 	else if (strcmp(arg, "force") == 0) {
 		acpi_force = 1;
-		acpi_ht = 1;
 		acpi_disabled = 0;
 	}
 	/* acpi=strict disables out-of-spec workarounds */
 	else if (strcmp(arg, "strict") == 0) {
 		acpi_strict = 1;
 	}
-	/* Limit ACPI just to boot-time to enable HT */
-	else if (strcmp(arg, "ht") == 0) {
-		if (!acpi_force) {
-			printk(KERN_WARNING "acpi=ht will be removed in Linux-2.6.35\n");
-			disable_acpi();
-		}
-		acpi_ht = 1;
-	}
 	/* acpi=rsdt use RSDT instead of XSDT */
 	else if (strcmp(arg, "rsdt") == 0) {
 		acpi_rsdt_forced = 1;
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index f996103..82e5086 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -162,8 +162,6 @@
 #endif
 		if (strncmp(str, "old_ordering", 12) == 0)
 			acpi_old_suspend_ordering();
-		if (strncmp(str, "sci_force_enable", 16) == 0)
-			acpi_set_sci_en_on_resume();
 		str = strchr(str, ',');
 		if (str != NULL)
 			str += strspn(str, ", \t");
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index e5a4a1e..c02cc69 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -51,6 +51,7 @@
 #include <asm/smp.h>
 #include <asm/mce.h>
 #include <asm/kvm_para.h>
+#include <asm/tsc.h>
 
 unsigned int num_processors;
 
@@ -1151,8 +1152,13 @@
  */
 void __cpuinit setup_local_APIC(void)
 {
-	unsigned int value;
-	int i, j;
+	unsigned int value, queued;
+	int i, j, acked = 0;
+	unsigned long long tsc = 0, ntsc;
+	long long max_loops = cpu_khz;
+
+	if (cpu_has_tsc)
+		rdtscll(tsc);
 
 	if (disable_apic) {
 		arch_disable_smp_support();
@@ -1204,13 +1210,32 @@
 	 * the interrupt. Hence a vector might get locked. It was noticed
 	 * for timer irq (vector 0x31). Issue an extra EOI to clear ISR.
 	 */
-	for (i = APIC_ISR_NR - 1; i >= 0; i--) {
-		value = apic_read(APIC_ISR + i*0x10);
-		for (j = 31; j >= 0; j--) {
-			if (value & (1<<j))
-				ack_APIC_irq();
+	do {
+		queued = 0;
+		for (i = APIC_ISR_NR - 1; i >= 0; i--)
+			queued |= apic_read(APIC_IRR + i*0x10);
+
+		for (i = APIC_ISR_NR - 1; i >= 0; i--) {
+			value = apic_read(APIC_ISR + i*0x10);
+			for (j = 31; j >= 0; j--) {
+				if (value & (1<<j)) {
+					ack_APIC_irq();
+					acked++;
+				}
+			}
 		}
-	}
+		if (acked > 256) {
+			printk(KERN_ERR "LAPIC pending interrupts after %d EOI\n",
+			       acked);
+			break;
+		}
+		if (cpu_has_tsc) {
+			rdtscll(ntsc);
+			max_loops = (cpu_khz << 10) - (ntsc - tsc);
+		} else
+			max_loops--;
+	} while (queued && max_loops > 0);
+	WARN_ON(max_loops <= 0);
 
 	/*
 	 * Now that we are all set up, enable the APIC
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index cc83a00..68e4a6f 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1121,9 +1121,9 @@
 	oist = &per_cpu(orig_ist, cpu);
 
 #ifdef CONFIG_NUMA
-	if (cpu != 0 && percpu_read(node_number) == 0 &&
-	    cpu_to_node(cpu) != NUMA_NO_NODE)
-		percpu_write(node_number, cpu_to_node(cpu));
+	if (cpu != 0 && percpu_read(numa_node) == 0 &&
+	    early_cpu_to_node(cpu) != NUMA_NO_NODE)
+		set_numa_node(early_cpu_to_node(cpu));
 #endif
 
 	me = current;
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 6f3dc8f..7ec2123 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1497,8 +1497,8 @@
  * simply keep the boost-disable flag in sync with the current global
  * state.
  */
-static int __cpuinit cpb_notify(struct notifier_block *nb, unsigned long action,
-				void *hcpu)
+static int cpb_notify(struct notifier_block *nb, unsigned long action,
+		      void *hcpu)
 {
 	unsigned cpu = (long)hcpu;
 	u32 lo, hi;
@@ -1528,7 +1528,7 @@
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata cpb_nb = {
+static struct notifier_block cpb_nb = {
 	.notifier_call		= cpb_notify,
 };
 
diff --git a/arch/x86/kernel/cpu/mcheck/Makefile b/arch/x86/kernel/cpu/mcheck/Makefile
index 4ac6d48..bb34b03 100644
--- a/arch/x86/kernel/cpu/mcheck/Makefile
+++ b/arch/x86/kernel/cpu/mcheck/Makefile
@@ -7,3 +7,5 @@
 obj-$(CONFIG_X86_MCE_INJECT)	+= mce-inject.o
 
 obj-$(CONFIG_X86_THERMAL_VECTOR) += therm_throt.o
+
+obj-$(CONFIG_ACPI_APEI)		+= mce-apei.o
diff --git a/arch/x86/kernel/cpu/mcheck/mce-apei.c b/arch/x86/kernel/cpu/mcheck/mce-apei.c
new file mode 100644
index 0000000..745b54f
--- /dev/null
+++ b/arch/x86/kernel/cpu/mcheck/mce-apei.c
@@ -0,0 +1,138 @@
+/*
+ * Bridge between MCE and APEI
+ *
+ * On some machine, corrected memory errors are reported via APEI
+ * generic hardware error source (GHES) instead of corrected Machine
+ * Check. These corrected memory errors can be reported to user space
+ * through /dev/mcelog via faking a corrected Machine Check, so that
+ * the error memory page can be offlined by /sbin/mcelog if the error
+ * count for one page is beyond the threshold.
+ *
+ * For fatal MCE, save MCE record into persistent storage via ERST, so
+ * that the MCE record can be logged after reboot via ERST.
+ *
+ * Copyright 2010 Intel Corp.
+ *   Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/cper.h>
+#include <acpi/apei.h>
+#include <asm/mce.h>
+
+#include "mce-internal.h"
+
+void apei_mce_report_mem_error(int corrected, struct cper_sec_mem_err *mem_err)
+{
+	struct mce m;
+
+	/* Only corrected MC is reported */
+	if (!corrected)
+		return;
+
+	mce_setup(&m);
+	m.bank = 1;
+	/* Fake a memory read corrected error with unknown channel */
+	m.status = MCI_STATUS_VAL | MCI_STATUS_EN | MCI_STATUS_ADDRV | 0x9f;
+	m.addr = mem_err->physical_addr;
+	mce_log(&m);
+	mce_notify_irq();
+}
+EXPORT_SYMBOL_GPL(apei_mce_report_mem_error);
+
+#define CPER_CREATOR_MCE						\
+	UUID_LE(0x75a574e3, 0x5052, 0x4b29, 0x8a, 0x8e, 0xbe, 0x2c,	\
+		0x64, 0x90, 0xb8, 0x9d)
+#define CPER_SECTION_TYPE_MCE						\
+	UUID_LE(0xfe08ffbe, 0x95e4, 0x4be7, 0xbc, 0x73, 0x40, 0x96,	\
+		0x04, 0x4a, 0x38, 0xfc)
+
+/*
+ * CPER specification (in UEFI specification 2.3 appendix N) requires
+ * byte-packed.
+ */
+struct cper_mce_record {
+	struct cper_record_header hdr;
+	struct cper_section_descriptor sec_hdr;
+	struct mce mce;
+} __packed;
+
+int apei_write_mce(struct mce *m)
+{
+	struct cper_mce_record rcd;
+
+	memset(&rcd, 0, sizeof(rcd));
+	memcpy(rcd.hdr.signature, CPER_SIG_RECORD, CPER_SIG_SIZE);
+	rcd.hdr.revision = CPER_RECORD_REV;
+	rcd.hdr.signature_end = CPER_SIG_END;
+	rcd.hdr.section_count = 1;
+	rcd.hdr.error_severity = CPER_SER_FATAL;
+	/* timestamp, platform_id, partition_id are all invalid */
+	rcd.hdr.validation_bits = 0;
+	rcd.hdr.record_length = sizeof(rcd);
+	rcd.hdr.creator_id = CPER_CREATOR_MCE;
+	rcd.hdr.notification_type = CPER_NOTIFY_MCE;
+	rcd.hdr.record_id = cper_next_record_id();
+	rcd.hdr.flags = CPER_HW_ERROR_FLAGS_PREVERR;
+
+	rcd.sec_hdr.section_offset = (void *)&rcd.mce - (void *)&rcd;
+	rcd.sec_hdr.section_length = sizeof(rcd.mce);
+	rcd.sec_hdr.revision = CPER_SEC_REV;
+	/* fru_id and fru_text is invalid */
+	rcd.sec_hdr.validation_bits = 0;
+	rcd.sec_hdr.flags = CPER_SEC_PRIMARY;
+	rcd.sec_hdr.section_type = CPER_SECTION_TYPE_MCE;
+	rcd.sec_hdr.section_severity = CPER_SER_FATAL;
+
+	memcpy(&rcd.mce, m, sizeof(*m));
+
+	return erst_write(&rcd.hdr);
+}
+
+ssize_t apei_read_mce(struct mce *m, u64 *record_id)
+{
+	struct cper_mce_record rcd;
+	ssize_t len;
+
+	len = erst_read_next(&rcd.hdr, sizeof(rcd));
+	if (len <= 0)
+		return len;
+	/* Can not skip other records in storage via ERST unless clear them */
+	else if (len != sizeof(rcd) ||
+		 uuid_le_cmp(rcd.hdr.creator_id, CPER_CREATOR_MCE)) {
+		if (printk_ratelimit())
+			pr_warning(
+			"MCE-APEI: Can not skip the unknown record in ERST");
+		return -EIO;
+	}
+
+	memcpy(m, &rcd.mce, sizeof(*m));
+	*record_id = rcd.hdr.record_id;
+
+	return sizeof(*m);
+}
+
+/* Check whether there is record in ERST */
+int apei_check_mce(void)
+{
+	return erst_get_record_count();
+}
+
+int apei_clear_mce(u64 record_id)
+{
+	return erst_clear(record_id);
+}
diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h
index 32996f9..fefcc69 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-internal.h
+++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h
@@ -28,3 +28,26 @@
 
 extern struct mce_bank *mce_banks;
 
+#ifdef CONFIG_ACPI_APEI
+int apei_write_mce(struct mce *m);
+ssize_t apei_read_mce(struct mce *m, u64 *record_id);
+int apei_check_mce(void);
+int apei_clear_mce(u64 record_id);
+#else
+static inline int apei_write_mce(struct mce *m)
+{
+	return -EINVAL;
+}
+static inline ssize_t apei_read_mce(struct mce *m, u64 *record_id)
+{
+	return 0;
+}
+static inline int apei_check_mce(void)
+{
+	return 0;
+}
+static inline int apei_clear_mce(u64 record_id)
+{
+	return -EINVAL;
+}
+#endif
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 7a355dd..707165d 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -264,7 +264,7 @@
 
 static void mce_panic(char *msg, struct mce *final, char *exp)
 {
-	int i;
+	int i, apei_err = 0;
 
 	if (!fake_panic) {
 		/*
@@ -287,8 +287,11 @@
 		struct mce *m = &mcelog.entry[i];
 		if (!(m->status & MCI_STATUS_VAL))
 			continue;
-		if (!(m->status & MCI_STATUS_UC))
+		if (!(m->status & MCI_STATUS_UC)) {
 			print_mce(m);
+			if (!apei_err)
+				apei_err = apei_write_mce(m);
+		}
 	}
 	/* Now print uncorrected but with the final one last */
 	for (i = 0; i < MCE_LOG_LEN; i++) {
@@ -297,11 +300,17 @@
 			continue;
 		if (!(m->status & MCI_STATUS_UC))
 			continue;
-		if (!final || memcmp(m, final, sizeof(struct mce)))
+		if (!final || memcmp(m, final, sizeof(struct mce))) {
 			print_mce(m);
+			if (!apei_err)
+				apei_err = apei_write_mce(m);
+		}
 	}
-	if (final)
+	if (final) {
 		print_mce(final);
+		if (!apei_err)
+			apei_err = apei_write_mce(final);
+	}
 	if (cpu_missing)
 		printk(KERN_EMERG "Some CPUs didn't answer in synchronization\n");
 	print_mce_tail();
@@ -1493,6 +1502,43 @@
 	rdtscll(cpu_tsc[smp_processor_id()]);
 }
 
+static int mce_apei_read_done;
+
+/* Collect MCE record of previous boot in persistent storage via APEI ERST. */
+static int __mce_read_apei(char __user **ubuf, size_t usize)
+{
+	int rc;
+	u64 record_id;
+	struct mce m;
+
+	if (usize < sizeof(struct mce))
+		return -EINVAL;
+
+	rc = apei_read_mce(&m, &record_id);
+	/* Error or no more MCE record */
+	if (rc <= 0) {
+		mce_apei_read_done = 1;
+		return rc;
+	}
+	rc = -EFAULT;
+	if (copy_to_user(*ubuf, &m, sizeof(struct mce)))
+		return rc;
+	/*
+	 * In fact, we should have cleared the record after that has
+	 * been flushed to the disk or sent to network in
+	 * /sbin/mcelog, but we have no interface to support that now,
+	 * so just clear it to avoid duplication.
+	 */
+	rc = apei_clear_mce(record_id);
+	if (rc) {
+		mce_apei_read_done = 1;
+		return rc;
+	}
+	*ubuf += sizeof(struct mce);
+
+	return 0;
+}
+
 static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize,
 			loff_t *off)
 {
@@ -1506,15 +1552,19 @@
 		return -ENOMEM;
 
 	mutex_lock(&mce_read_mutex);
+
+	if (!mce_apei_read_done) {
+		err = __mce_read_apei(&buf, usize);
+		if (err || buf != ubuf)
+			goto out;
+	}
+
 	next = rcu_dereference_check_mce(mcelog.next);
 
 	/* Only supports full reads right now */
-	if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce)) {
-		mutex_unlock(&mce_read_mutex);
-		kfree(cpu_tsc);
-
-		return -EINVAL;
-	}
+	err = -EINVAL;
+	if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce))
+		goto out;
 
 	err = 0;
 	prev = 0;
@@ -1562,10 +1612,15 @@
 			memset(&mcelog.entry[i], 0, sizeof(struct mce));
 		}
 	}
+
+	if (err)
+		err = -EFAULT;
+
+out:
 	mutex_unlock(&mce_read_mutex);
 	kfree(cpu_tsc);
 
-	return err ? -EFAULT : buf - ubuf;
+	return err ? err : buf - ubuf;
 }
 
 static unsigned int mce_poll(struct file *file, poll_table *wait)
@@ -1573,6 +1628,8 @@
 	poll_wait(file, &mce_wait, wait);
 	if (rcu_dereference_check_mce(mcelog.next))
 		return POLLIN | POLLRDNORM;
+	if (!mce_apei_read_done && apei_check_mce())
+		return POLLIN | POLLRDNORM;
 	return 0;
 }
 
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index 81c499e..e1a0a3b 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -190,7 +190,7 @@
 		mutex_unlock(&therm_cpu_lock);
 		break;
 	}
-	return err ? NOTIFY_BAD : NOTIFY_OK;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block thermal_throttle_cpu_notifier __cpuinitdata =
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index fd4db0d..c775860 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1717,7 +1717,11 @@
 	 */
 	regs->bp = rewind_frame_pointer(skip + 1);
 	regs->cs = __KERNEL_CS;
-	local_save_flags(regs->flags);
+	/*
+	 * We abuse bit 3 to pass exact information, see perf_misc_flags
+	 * and the comment with PERF_EFLAGS_EXACT.
+	 */
+	regs->flags = 0;
 }
 
 unsigned long perf_instruction_pointer(struct pt_regs *regs)
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 424fc8d..ae85d69 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -465,15 +465,21 @@
 	return rc;
 }
 
-static inline void p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
+static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
 {
-	unsigned long dummy;
+	int overflow = 0;
+	u32 low, high;
 
-	rdmsrl(hwc->config_base + hwc->idx, dummy);
-	if (dummy & P4_CCCR_OVF) {
+	rdmsr(hwc->config_base + hwc->idx, low, high);
+
+	/* we need to check high bit for unflagged overflows */
+	if ((low & P4_CCCR_OVF) || !(high & (1 << 31))) {
+		overflow = 1;
 		(void)checking_wrmsrl(hwc->config_base + hwc->idx,
-			((u64)dummy) & ~P4_CCCR_OVF);
+			((u64)low) & ~P4_CCCR_OVF);
 	}
+
+	return overflow;
 }
 
 static inline void p4_pmu_disable_event(struct perf_event *event)
@@ -584,21 +590,15 @@
 
 		WARN_ON_ONCE(hwc->idx != idx);
 
-		/*
-		 * FIXME: Redundant call, actually not needed
-		 * but just to check if we're screwed
-		 */
-		p4_pmu_clear_cccr_ovf(hwc);
+		/* it might be unflagged overflow */
+		handled = p4_pmu_clear_cccr_ovf(hwc);
 
 		val = x86_perf_event_update(event);
-		if (val & (1ULL << (x86_pmu.cntval_bits - 1)))
+		if (!handled && (val & (1ULL << (x86_pmu.cntval_bits - 1))))
 			continue;
 
-		/*
-		 * event overflow
-		 */
-		handled		= 1;
-		data.period	= event->hw.last_period;
+		/* event overflow for sure */
+		data.period = event->hw.last_period;
 
 		if (!x86_perf_event_set_period(event))
 			continue;
@@ -670,7 +670,7 @@
 
 /*
  * ESCR address hashing is tricky, ESCRs are not sequential
- * in memory but all starts from MSR_P4_BSU_ESCR0 (0x03e0) and
+ * in memory but all starts from MSR_P4_BSU_ESCR0 (0x03a0) and
  * the metric between any ESCRs is laid in range [0xa0,0xe1]
  *
  * so we make ~70% filled hashtable
@@ -735,8 +735,9 @@
 {
 	unsigned int idx = P4_ESCR_MSR_IDX(addr);
 
-	if (unlikely(idx >= P4_ESCR_MSR_TABLE_SIZE ||
-			!p4_escr_table[idx])) {
+	if (unlikely(idx >= P4_ESCR_MSR_TABLE_SIZE	||
+			!p4_escr_table[idx]		||
+			p4_escr_table[idx] != addr)) {
 		WARN_ONCE(1, "P4 PMU: Wrong address passed: %x\n", addr);
 		return -1;
 	}
@@ -762,7 +763,7 @@
 {
 	unsigned long used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
 	unsigned long escr_mask[BITS_TO_LONGS(P4_ESCR_MSR_TABLE_SIZE)];
-	int cpu = raw_smp_processor_id();
+	int cpu = smp_processor_id();
 	struct hw_perf_event *hwc;
 	struct p4_event_bind *bind;
 	unsigned int i, thread, num;
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 8b862d5..1b7b31a 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -170,7 +170,7 @@
 		cpuid_device_destroy(cpu);
 		break;
 	}
-	return err ? NOTIFY_BAD : NOTIFY_OK;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block __refdata cpuid_class_cpu_notifier =
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 2cd8c54..fa6551d 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -260,6 +260,7 @@
 }
 
 MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
+MODULE_ALIAS("devname:cpu/microcode");
 #else
 #define microcode_dev_init()	0
 #define microcode_dev_exit()	do { } while (0)
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 4d4468e..7bf2dc4 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -230,7 +230,7 @@
 		msr_device_destroy(cpu);
 		break;
 	}
-	return err ? NOTIFY_BAD : NOTIFY_OK;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block __refdata msr_class_cpu_notifier = {
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index 7d2829d..a5bc528 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -31,8 +31,6 @@
 	.free_coherent = swiotlb_free_coherent,
 	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
 	.sync_single_for_device = swiotlb_sync_single_for_device,
-	.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
-	.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
 	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
 	.sync_sg_for_device = swiotlb_sync_sg_for_device,
 	.map_sg = swiotlb_map_sg_attrs,
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index e802989..b4ae4ac 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -676,6 +676,17 @@
 			DMI_MATCH(DMI_BOARD_NAME, "DG45FC"),
 		},
 	},
+	/*
+	 * The Dell Inspiron Mini 1012 has DMI_BIOS_VENDOR = "Dell Inc.", so
+	 * match on the product name.
+	 */
+	{
+		.callback = dmi_low_memory_corruption,
+		.ident = "Phoenix BIOS",
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
+		},
+	},
 #endif
 	{}
 };
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index ef6370b..a867940 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -265,10 +265,10 @@
 
 #if defined(CONFIG_X86_64) && defined(CONFIG_NUMA)
 	/*
-	 * make sure boot cpu node_number is right, when boot cpu is on the
+	 * make sure boot cpu numa_node is right, when boot cpu is on the
 	 * node that doesn't have mem installed
 	 */
-	per_cpu(node_number, boot_cpu_id) = cpu_to_node(boot_cpu_id);
+	set_cpu_numa_node(boot_cpu_id, early_cpu_to_node(boot_cpu_id));
 #endif
 
 	/* Setup node to cpumask map */
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 763d815..37462f1 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1215,9 +1215,17 @@
 	if (!num_processors)
 		num_processors = 1;
 
-	if (setup_possible_cpus == -1)
-		possible = num_processors + disabled_cpus;
-	else
+	i = setup_max_cpus ?: 1;
+	if (setup_possible_cpus == -1) {
+		possible = num_processors;
+#ifdef CONFIG_HOTPLUG_CPU
+		if (setup_max_cpus)
+			possible += disabled_cpus;
+#else
+		if (possible > i)
+			possible = i;
+#endif
+	} else
 		possible = setup_possible_cpus;
 
 	total_cpus = max_t(int, possible, num_processors + disabled_cpus);
@@ -1230,11 +1238,23 @@
 		possible = nr_cpu_ids;
 	}
 
+#ifdef CONFIG_HOTPLUG_CPU
+	if (!setup_max_cpus)
+#endif
+	if (possible > i) {
+		printk(KERN_WARNING
+			"%d Processors exceeds max_cpus limit of %u\n",
+			possible, setup_max_cpus);
+		possible = i;
+	}
+
 	printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
 		possible, max_t(int, possible - num_processors, 0));
 
 	for (i = 0; i < possible; i++)
 		set_cpu_possible(i, true);
+	for (; i < NR_CPUS; i++)
+		set_cpu_possible(i, false);
 
 	nr_cpu_ids = possible;
 }
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 2bdf628..9257510 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -1390,7 +1390,6 @@
 #endif
 #ifdef CONFIG_ACPI
 	acpi_disabled = 1;
-	acpi_ht = 0;
 #endif
 
 	/*
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 8948f47..a7bcc23 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -33,9 +33,6 @@
 static unsigned long __initdata nodemap_addr;
 static unsigned long __initdata nodemap_size;
 
-DEFINE_PER_CPU(int, node_number) = 0;
-EXPORT_PER_CPU_SYMBOL(node_number);
-
 /*
  * Map cpu index to node index
  */
@@ -809,7 +806,7 @@
 	per_cpu(x86_cpu_to_node_map, cpu) = node;
 
 	if (node != NUMA_NO_NODE)
-		per_cpu(node_number, cpu) = node;
+		set_cpu_numa_node(cpu, node);
 }
 
 void __cpuinit numa_clear_node(int cpu)
@@ -867,7 +864,7 @@
 	numa_set_cpumask(cpu, 0);
 }
 
-int cpu_to_node(int cpu)
+int __cpu_to_node(int cpu)
 {
 	if (early_per_cpu_ptr(x86_cpu_to_node_map)) {
 		printk(KERN_WARNING
@@ -877,7 +874,7 @@
 	}
 	return per_cpu(x86_cpu_to_node_map, cpu);
 }
-EXPORT_SYMBOL(cpu_to_node);
+EXPORT_SYMBOL(__cpu_to_node);
 
 /*
  * Same function as cpu_to_node() but used if called before the
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index bbe5502..acc15b2 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -336,6 +336,7 @@
 {
 	int err = -EINVAL;
 	int is_range_ram;
+	struct memtype *entry;
 
 	if (!pat_enabled)
 		return 0;
@@ -355,17 +356,20 @@
 	}
 
 	spin_lock(&memtype_lock);
-	err = rbt_memtype_erase(start, end);
+	entry = rbt_memtype_erase(start, end);
 	spin_unlock(&memtype_lock);
 
-	if (err) {
+	if (!entry) {
 		printk(KERN_INFO "%s:%d freeing invalid memtype %Lx-%Lx\n",
 			current->comm, current->pid, start, end);
+		return -EINVAL;
 	}
 
+	kfree(entry);
+
 	dprintk("free_memtype request 0x%Lx-0x%Lx\n", start, end);
 
-	return err;
+	return 0;
 }
 
 
diff --git a/arch/x86/mm/pat_internal.h b/arch/x86/mm/pat_internal.h
index 4f39eef..77e5ba1 100644
--- a/arch/x86/mm/pat_internal.h
+++ b/arch/x86/mm/pat_internal.h
@@ -28,15 +28,15 @@
 #ifdef CONFIG_X86_PAT
 extern int rbt_memtype_check_insert(struct memtype *new,
 					unsigned long *new_type);
-extern int rbt_memtype_erase(u64 start, u64 end);
+extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
 extern struct memtype *rbt_memtype_lookup(u64 addr);
 extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
 #else
 static inline int rbt_memtype_check_insert(struct memtype *new,
 					unsigned long *new_type)
 { return 0; }
-static inline int rbt_memtype_erase(u64 start, u64 end)
-{ return 0; }
+static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
+{ return NULL; }
 static inline struct memtype *rbt_memtype_lookup(u64 addr)
 { return NULL; }
 static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
index 07de4cb..f537087 100644
--- a/arch/x86/mm/pat_rbtree.c
+++ b/arch/x86/mm/pat_rbtree.c
@@ -231,16 +231,17 @@
 	return err;
 }
 
-int rbt_memtype_erase(u64 start, u64 end)
+struct memtype *rbt_memtype_erase(u64 start, u64 end)
 {
 	struct memtype *data;
 
 	data = memtype_rb_exact_match(&memtype_rbroot, start, end);
 	if (!data)
-		return -EINVAL;
+		goto out;
 
 	rb_erase(&data->rb, &memtype_rbroot);
-	return 0;
+out:
+	return data;
 }
 
 struct memtype *rbt_memtype_lookup(u64 addr)
diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
index df3d5c8..308e325 100644
--- a/arch/x86/mm/pf_in.c
+++ b/arch/x86/mm/pf_in.c
@@ -34,7 +34,7 @@
 /* IA32 Manual 3, 2-1 */
 static unsigned char prefix_codes[] = {
 	0xF0, 0xF2, 0xF3, 0x2E, 0x36, 0x3E, 0x26, 0x64,
-	0x65, 0x2E, 0x3E, 0x66, 0x67
+	0x65, 0x66, 0x67
 };
 /* IA32 Manual 3, 3-432*/
 static unsigned int reg_rop[] = {
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 7928540..cac7184 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -9,7 +9,6 @@
 #include <linux/pagemap.h>
 #include <linux/spinlock.h>
 #include <linux/module.h>
-#include <linux/quicklist.h>
 
 #include <asm/system.h>
 #include <asm/pgtable.h>
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 31930fd..2ec04c4 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -207,10 +207,9 @@
 	if (!info.res)
 		goto res_alloc_fail;
 
-	info.name = kmalloc(16, GFP_KERNEL);
+	info.name = kasprintf(GFP_KERNEL, "PCI Bus %04x:%02x", domain, busnum);
 	if (!info.name)
 		goto name_alloc_fail;
-	sprintf(info.name, "PCI Bus %04x:%02x", domain, busnum);
 
 	info.res_num = 0;
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
@@ -224,8 +223,11 @@
 	return;
 }
 
-struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
+struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
 {
+	struct acpi_device *device = root->device;
+	int domain = root->segment;
+	int busnum = root->secondary.start;
 	struct pci_bus *bus;
 	struct pci_sysdata *sd;
 	int node;
diff --git a/arch/xtensa/include/asm/scatterlist.h b/arch/xtensa/include/asm/scatterlist.h
index 810080b..b1f9fdc 100644
--- a/arch/xtensa/include/asm/scatterlist.h
+++ b/arch/xtensa/include/asm/scatterlist.h
@@ -11,28 +11,7 @@
 #ifndef _XTENSA_SCATTERLIST_H
 #define _XTENSA_SCATTERLIST_H
 
-#include <asm/types.h>
-
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long	sg_magic;
-#endif
-	unsigned long	page_link;
-	unsigned int	offset;
-	dma_addr_t	dma_address;
-	unsigned int	length;
-};
-
-/*
- * These macros should be used after a pci_map_sg call has been done
- * to get bus addresses of each of the SG entries and their lengths.
- * You should only work with the number of sg entries pci_map_sg
- * returns, or alternatively stop on the first sg_dma_len(sg) which
- * is 0.
- */
-#define sg_dma_address(sg)      ((sg)->dma_address)
-#define sg_dma_len(sg)          ((sg)->length)
-
+#include <asm-generic/scatterlist.h>
 
 #define ISA_DMA_THRESHOLD (~0UL)
 
diff --git a/drivers/Makefile b/drivers/Makefile
index f42a030..91874e0 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -10,6 +10,7 @@
 obj-$(CONFIG_PARISC)		+= parisc/
 obj-$(CONFIG_RAPIDIO)		+= rapidio/
 obj-y				+= video/
+obj-y				+= idle/
 obj-$(CONFIG_ACPI)		+= acpi/
 obj-$(CONFIG_SFI)		+= sfi/
 # PnP must come after ACPI since it will eventually need to check if acpi
@@ -91,7 +92,6 @@
 obj-y				+= lguest/
 obj-$(CONFIG_CPU_FREQ)		+= cpufreq/
 obj-$(CONFIG_CPU_IDLE)		+= cpuidle/
-obj-y				+= idle/
 obj-$(CONFIG_MMC)		+= mmc/
 obj-$(CONFIG_MEMSTICK)		+= memstick/
 obj-$(CONFIG_NEW_LEDS)		+= leds/
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 93d2c79..7464115 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -360,4 +360,13 @@
 	  To compile this driver as a module, choose M here:
 	  the modules will be called sbs and sbshc.
 
+config ACPI_HED
+	tristate "Hardware Error Device"
+	help
+	  This driver supports the Hardware Error Device (PNP0C33),
+	  which is used to report some hardware errors notified via
+	  SCI, mainly the corrected errors.
+
+source "drivers/acpi/apei/Kconfig"
+
 endif	# ACPI
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index a8d8998..6ee3316 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -19,7 +19,7 @@
 
 # All the builtin files are in the "acpi." module_param namespace.
 acpi-y				+= osl.o utils.o reboot.o
-acpi-y				+= hest.o
+acpi-y				+= atomicio.o
 
 # sleep related files
 acpi-y				+= wakeup.o
@@ -59,6 +59,7 @@
 obj-$(CONFIG_ACPI_SBS)		+= sbshc.o
 obj-$(CONFIG_ACPI_SBS)		+= sbs.o
 obj-$(CONFIG_ACPI_POWER_METER)	+= power_meter.o
+obj-$(CONFIG_ACPI_HED)		+= hed.o
 
 # processor has its own "processor." module_param namespace
 processor-y			:= processor_driver.o processor_throttling.o
@@ -66,3 +67,5 @@
 processor-$(CONFIG_CPU_FREQ)	+= processor_perflib.o
 
 obj-$(CONFIG_ACPI_PROCESSOR_AGGREGATOR) += acpi_pad.o
+
+obj-$(CONFIG_ACPI_APEI)		+= apei/
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 6212213..d269a8f 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -43,6 +43,10 @@
 #define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1)
 #define CPUID5_ECX_INTERRUPT_BREAK	(0x2)
 static unsigned long power_saving_mwait_eax;
+
+static unsigned char tsc_detected_unstable;
+static unsigned char tsc_marked_unstable;
+
 static void power_saving_mwait_init(void)
 {
 	unsigned int eax, ebx, ecx, edx;
@@ -87,8 +91,8 @@
 
 		/*FALL THROUGH*/
 	default:
-		/* TSC could halt in idle, so notify users */
-		mark_tsc_unstable("TSC halts in idle");
+		/* TSC could halt in idle */
+		tsc_detected_unstable = 1;
 	}
 #endif
 }
@@ -168,16 +172,14 @@
 
 		do_sleep = 0;
 
-		current_thread_info()->status &= ~TS_POLLING;
-		/*
-		 * TS_POLLING-cleared state must be visible before we test
-		 * NEED_RESCHED:
-		 */
-		smp_mb();
-
 		expire_time = jiffies + HZ * (100 - idle_pct) / 100;
 
 		while (!need_resched()) {
+			if (tsc_detected_unstable && !tsc_marked_unstable) {
+				/* TSC could halt in idle, so notify users */
+				mark_tsc_unstable("TSC halts in idle");
+				tsc_marked_unstable = 1;
+			}
 			local_irq_disable();
 			cpu = smp_processor_id();
 			clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER,
@@ -200,8 +202,6 @@
 			}
 		}
 
-		current_thread_info()->status |= TS_POLLING;
-
 		/*
 		 * current sched_rt has threshold for rt task running time.
 		 * When a rt task uses 95% CPU time, the rt thread will be
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 7c7bbb4..d5a5efc 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -69,7 +69,7 @@
 
 acpi_status acpi_enable(void)
 {
-	acpi_status status = AE_OK;
+	acpi_status status;
 
 	ACPI_FUNCTION_TRACE(acpi_enable);
 
@@ -84,21 +84,30 @@
 	if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
 				  "System is already in ACPI mode\n"));
-	} else {
-		/* Transition to ACPI mode */
-
-		status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
-		if (ACPI_FAILURE(status)) {
-			ACPI_ERROR((AE_INFO,
-				    "Could not transition to ACPI mode"));
-			return_ACPI_STATUS(status);
-		}
-
-		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
-				  "Transition to ACPI mode successful\n"));
+		return_ACPI_STATUS(AE_OK);
 	}
 
-	return_ACPI_STATUS(status);
+	/* Transition to ACPI mode */
+
+	status = acpi_hw_set_mode(ACPI_SYS_MODE_ACPI);
+	if (ACPI_FAILURE(status)) {
+		ACPI_ERROR((AE_INFO,
+			    "Could not transition to ACPI mode"));
+		return_ACPI_STATUS(status);
+	}
+
+	/* Sanity check that transition succeeded */
+
+	if (acpi_hw_get_mode() != ACPI_SYS_MODE_ACPI) {
+		ACPI_ERROR((AE_INFO,
+			    "Hardware did not enter ACPI mode"));
+		return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INIT,
+			  "Transition to ACPI mode successful\n"));
+
+	return_ACPI_STATUS(AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_enable)
diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c
index 679a112..b44274a 100644
--- a/drivers/acpi/acpica/hwacpi.c
+++ b/drivers/acpi/acpica/hwacpi.c
@@ -63,7 +63,6 @@
 {
 
 	acpi_status status;
-	u32 retry;
 
 	ACPI_FUNCTION_TRACE(hw_set_mode);
 
@@ -125,24 +124,7 @@
 		return_ACPI_STATUS(status);
 	}
 
-	/*
-	 * Some hardware takes a LONG time to switch modes. Give them 3 sec to
-	 * do so, but allow faster systems to proceed more quickly.
-	 */
-	retry = 3000;
-	while (retry) {
-		if (acpi_hw_get_mode() == mode) {
-			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-					  "Mode %X successfully enabled\n",
-					  mode));
-			return_ACPI_STATUS(AE_OK);
-		}
-		acpi_os_stall(1000);
-		retry--;
-	}
-
-	ACPI_ERROR((AE_INFO, "Hardware did not change modes"));
-	return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE);
+	return_ACPI_STATUS(AE_OK);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
new file mode 100644
index 0000000..f8c668f
--- /dev/null
+++ b/drivers/acpi/apei/Kconfig
@@ -0,0 +1,30 @@
+config ACPI_APEI
+	bool "ACPI Platform Error Interface (APEI)"
+	depends on X86
+	help
+	  APEI allows to report errors (for example from the chipset)
+	  to the operating system. This improves NMI handling
+	  especially. In addition it supports error serialization and
+	  error injection.
+
+config ACPI_APEI_GHES
+	tristate "APEI Generic Hardware Error Source"
+	depends on ACPI_APEI && X86
+	select ACPI_HED
+	help
+	  Generic Hardware Error Source provides a way to report
+	  platform hardware errors (such as that from chipset). It
+	  works in so called "Firmware First" mode, that is, hardware
+	  errors are reported to firmware firstly, then reported to
+	  Linux by firmware. This way, some non-standard hardware
+	  error registers or non-standard hardware link can be checked
+	  by firmware to produce more valuable hardware error
+	  information for Linux.
+
+config ACPI_APEI_EINJ
+	tristate "APEI Error INJection (EINJ)"
+	depends on ACPI_APEI && DEBUG_FS
+	help
+	  EINJ provides a hardware error injection mechanism, it is
+	  mainly used for debugging and testing the other parts of
+	  APEI and some other RAS features.
diff --git a/drivers/acpi/apei/Makefile b/drivers/acpi/apei/Makefile
new file mode 100644
index 0000000..b13b03a
--- /dev/null
+++ b/drivers/acpi/apei/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_ACPI_APEI)		+= apei.o
+obj-$(CONFIG_ACPI_APEI_GHES)	+= ghes.o
+obj-$(CONFIG_ACPI_APEI_EINJ)	+= einj.o
+
+apei-y := apei-base.o hest.o cper.o erst.o
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
new file mode 100644
index 0000000..db3946e
--- /dev/null
+++ b/drivers/acpi/apei/apei-base.c
@@ -0,0 +1,593 @@
+/*
+ * apei-base.c - ACPI Platform Error Interface (APEI) supporting
+ * infrastructure
+ *
+ * APEI allows to report errors (for example from the chipset) to the
+ * the operating system. This improves NMI handling especially. In
+ * addition it supports error serialization and error injection.
+ *
+ * For more information about APEI, please refer to ACPI Specification
+ * version 4.0, chapter 17.
+ *
+ * This file has Common functions used by more than one APEI table,
+ * including framework of interpreter for ERST and EINJ; resource
+ * management for APEI registers.
+ *
+ * Copyright (C) 2009, Intel Corp.
+ *	Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/io.h>
+#include <linux/kref.h>
+#include <linux/rculist.h>
+#include <linux/interrupt.h>
+#include <linux/debugfs.h>
+#include <acpi/atomicio.h>
+
+#include "apei-internal.h"
+
+#define APEI_PFX "APEI: "
+
+/*
+ * APEI ERST (Error Record Serialization Table) and EINJ (Error
+ * INJection) interpreter framework.
+ */
+
+#define APEI_EXEC_PRESERVE_REGISTER	0x1
+
+void apei_exec_ctx_init(struct apei_exec_context *ctx,
+			struct apei_exec_ins_type *ins_table,
+			u32 instructions,
+			struct acpi_whea_header *action_table,
+			u32 entries)
+{
+	ctx->ins_table = ins_table;
+	ctx->instructions = instructions;
+	ctx->action_table = action_table;
+	ctx->entries = entries;
+}
+EXPORT_SYMBOL_GPL(apei_exec_ctx_init);
+
+int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val)
+{
+	int rc;
+
+	rc = acpi_atomic_read(val, &entry->register_region);
+	if (rc)
+		return rc;
+	*val >>= entry->register_region.bit_offset;
+	*val &= entry->mask;
+
+	return 0;
+}
+
+int apei_exec_read_register(struct apei_exec_context *ctx,
+			    struct acpi_whea_header *entry)
+{
+	int rc;
+	u64 val = 0;
+
+	rc = __apei_exec_read_register(entry, &val);
+	if (rc)
+		return rc;
+	ctx->value = val;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_exec_read_register);
+
+int apei_exec_read_register_value(struct apei_exec_context *ctx,
+				  struct acpi_whea_header *entry)
+{
+	int rc;
+
+	rc = apei_exec_read_register(ctx, entry);
+	if (rc)
+		return rc;
+	ctx->value = (ctx->value == entry->value);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_exec_read_register_value);
+
+int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val)
+{
+	int rc;
+
+	val &= entry->mask;
+	val <<= entry->register_region.bit_offset;
+	if (entry->flags & APEI_EXEC_PRESERVE_REGISTER) {
+		u64 valr = 0;
+		rc = acpi_atomic_read(&valr, &entry->register_region);
+		if (rc)
+			return rc;
+		valr &= ~(entry->mask << entry->register_region.bit_offset);
+		val |= valr;
+	}
+	rc = acpi_atomic_write(val, &entry->register_region);
+
+	return rc;
+}
+
+int apei_exec_write_register(struct apei_exec_context *ctx,
+			     struct acpi_whea_header *entry)
+{
+	return __apei_exec_write_register(entry, ctx->value);
+}
+EXPORT_SYMBOL_GPL(apei_exec_write_register);
+
+int apei_exec_write_register_value(struct apei_exec_context *ctx,
+				   struct acpi_whea_header *entry)
+{
+	int rc;
+
+	ctx->value = entry->value;
+	rc = apei_exec_write_register(ctx, entry);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(apei_exec_write_register_value);
+
+int apei_exec_noop(struct apei_exec_context *ctx,
+		   struct acpi_whea_header *entry)
+{
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_exec_noop);
+
+/*
+ * Interpret the specified action. Go through whole action table,
+ * execute all instructions belong to the action.
+ */
+int apei_exec_run(struct apei_exec_context *ctx, u8 action)
+{
+	int rc;
+	u32 i, ip;
+	struct acpi_whea_header *entry;
+	apei_exec_ins_func_t run;
+
+	ctx->ip = 0;
+
+	/*
+	 * "ip" is the instruction pointer of current instruction,
+	 * "ctx->ip" specifies the next instruction to executed,
+	 * instruction "run" function may change the "ctx->ip" to
+	 * implement "goto" semantics.
+	 */
+rewind:
+	ip = 0;
+	for (i = 0; i < ctx->entries; i++) {
+		entry = &ctx->action_table[i];
+		if (entry->action != action)
+			continue;
+		if (ip == ctx->ip) {
+			if (entry->instruction >= ctx->instructions ||
+			    !ctx->ins_table[entry->instruction].run) {
+				pr_warning(FW_WARN APEI_PFX
+			"Invalid action table, unknown instruction type: %d\n",
+					   entry->instruction);
+				return -EINVAL;
+			}
+			run = ctx->ins_table[entry->instruction].run;
+			rc = run(ctx, entry);
+			if (rc < 0)
+				return rc;
+			else if (rc != APEI_EXEC_SET_IP)
+				ctx->ip++;
+		}
+		ip++;
+		if (ctx->ip < ip)
+			goto rewind;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_exec_run);
+
+typedef int (*apei_exec_entry_func_t)(struct apei_exec_context *ctx,
+				      struct acpi_whea_header *entry,
+				      void *data);
+
+static int apei_exec_for_each_entry(struct apei_exec_context *ctx,
+				    apei_exec_entry_func_t func,
+				    void *data,
+				    int *end)
+{
+	u8 ins;
+	int i, rc;
+	struct acpi_whea_header *entry;
+	struct apei_exec_ins_type *ins_table = ctx->ins_table;
+
+	for (i = 0; i < ctx->entries; i++) {
+		entry = ctx->action_table + i;
+		ins = entry->instruction;
+		if (end)
+			*end = i;
+		if (ins >= ctx->instructions || !ins_table[ins].run) {
+			pr_warning(FW_WARN APEI_PFX
+			"Invalid action table, unknown instruction type: %d\n",
+				   ins);
+			return -EINVAL;
+		}
+		rc = func(ctx, entry, data);
+		if (rc)
+			return rc;
+	}
+
+	return 0;
+}
+
+static int pre_map_gar_callback(struct apei_exec_context *ctx,
+				struct acpi_whea_header *entry,
+				void *data)
+{
+	u8 ins = entry->instruction;
+
+	if (ctx->ins_table[ins].flags & APEI_EXEC_INS_ACCESS_REGISTER)
+		return acpi_pre_map_gar(&entry->register_region);
+
+	return 0;
+}
+
+/*
+ * Pre-map all GARs in action table to make it possible to access them
+ * in NMI handler.
+ */
+int apei_exec_pre_map_gars(struct apei_exec_context *ctx)
+{
+	int rc, end;
+
+	rc = apei_exec_for_each_entry(ctx, pre_map_gar_callback,
+				      NULL, &end);
+	if (rc) {
+		struct apei_exec_context ctx_unmap;
+		memcpy(&ctx_unmap, ctx, sizeof(*ctx));
+		ctx_unmap.entries = end;
+		apei_exec_post_unmap_gars(&ctx_unmap);
+	}
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(apei_exec_pre_map_gars);
+
+static int post_unmap_gar_callback(struct apei_exec_context *ctx,
+				   struct acpi_whea_header *entry,
+				   void *data)
+{
+	u8 ins = entry->instruction;
+
+	if (ctx->ins_table[ins].flags & APEI_EXEC_INS_ACCESS_REGISTER)
+		acpi_post_unmap_gar(&entry->register_region);
+
+	return 0;
+}
+
+/* Post-unmap all GAR in action table. */
+int apei_exec_post_unmap_gars(struct apei_exec_context *ctx)
+{
+	return apei_exec_for_each_entry(ctx, post_unmap_gar_callback,
+					NULL, NULL);
+}
+EXPORT_SYMBOL_GPL(apei_exec_post_unmap_gars);
+
+/*
+ * Resource management for GARs in APEI
+ */
+struct apei_res {
+	struct list_head list;
+	unsigned long start;
+	unsigned long end;
+};
+
+/* Collect all resources requested, to avoid conflict */
+struct apei_resources apei_resources_all = {
+	.iomem = LIST_HEAD_INIT(apei_resources_all.iomem),
+	.ioport = LIST_HEAD_INIT(apei_resources_all.ioport),
+};
+
+static int apei_res_add(struct list_head *res_list,
+			unsigned long start, unsigned long size)
+{
+	struct apei_res *res, *resn, *res_ins = NULL;
+	unsigned long end = start + size;
+
+	if (end <= start)
+		return 0;
+repeat:
+	list_for_each_entry_safe(res, resn, res_list, list) {
+		if (res->start > end || res->end < start)
+			continue;
+		else if (end <= res->end && start >= res->start) {
+			kfree(res_ins);
+			return 0;
+		}
+		list_del(&res->list);
+		res->start = start = min(res->start, start);
+		res->end = end = max(res->end, end);
+		kfree(res_ins);
+		res_ins = res;
+		goto repeat;
+	}
+
+	if (res_ins)
+		list_add(&res_ins->list, res_list);
+	else {
+		res_ins = kmalloc(sizeof(*res), GFP_KERNEL);
+		if (!res_ins)
+			return -ENOMEM;
+		res_ins->start = start;
+		res_ins->end = end;
+		list_add(&res_ins->list, res_list);
+	}
+
+	return 0;
+}
+
+static int apei_res_sub(struct list_head *res_list1,
+			struct list_head *res_list2)
+{
+	struct apei_res *res1, *resn1, *res2, *res;
+	res1 = list_entry(res_list1->next, struct apei_res, list);
+	resn1 = list_entry(res1->list.next, struct apei_res, list);
+	while (&res1->list != res_list1) {
+		list_for_each_entry(res2, res_list2, list) {
+			if (res1->start >= res2->end ||
+			    res1->end <= res2->start)
+				continue;
+			else if (res1->end <= res2->end &&
+				 res1->start >= res2->start) {
+				list_del(&res1->list);
+				kfree(res1);
+				break;
+			} else if (res1->end > res2->end &&
+				   res1->start < res2->start) {
+				res = kmalloc(sizeof(*res), GFP_KERNEL);
+				if (!res)
+					return -ENOMEM;
+				res->start = res2->end;
+				res->end = res1->end;
+				res1->end = res2->start;
+				list_add(&res->list, &res1->list);
+				resn1 = res;
+			} else {
+				if (res1->start < res2->start)
+					res1->end = res2->start;
+				else
+					res1->start = res2->end;
+			}
+		}
+		res1 = resn1;
+		resn1 = list_entry(resn1->list.next, struct apei_res, list);
+	}
+
+	return 0;
+}
+
+static void apei_res_clean(struct list_head *res_list)
+{
+	struct apei_res *res, *resn;
+
+	list_for_each_entry_safe(res, resn, res_list, list) {
+		list_del(&res->list);
+		kfree(res);
+	}
+}
+
+void apei_resources_fini(struct apei_resources *resources)
+{
+	apei_res_clean(&resources->iomem);
+	apei_res_clean(&resources->ioport);
+}
+EXPORT_SYMBOL_GPL(apei_resources_fini);
+
+static int apei_resources_merge(struct apei_resources *resources1,
+				struct apei_resources *resources2)
+{
+	int rc;
+	struct apei_res *res;
+
+	list_for_each_entry(res, &resources2->iomem, list) {
+		rc = apei_res_add(&resources1->iomem, res->start,
+				  res->end - res->start);
+		if (rc)
+			return rc;
+	}
+	list_for_each_entry(res, &resources2->ioport, list) {
+		rc = apei_res_add(&resources1->ioport, res->start,
+				  res->end - res->start);
+		if (rc)
+			return rc;
+	}
+
+	return 0;
+}
+
+/*
+ * EINJ has two groups of GARs (EINJ table entry and trigger table
+ * entry), so common resources are subtracted from the trigger table
+ * resources before the second requesting.
+ */
+int apei_resources_sub(struct apei_resources *resources1,
+		       struct apei_resources *resources2)
+{
+	int rc;
+
+	rc = apei_res_sub(&resources1->iomem, &resources2->iomem);
+	if (rc)
+		return rc;
+	return apei_res_sub(&resources1->ioport, &resources2->ioport);
+}
+EXPORT_SYMBOL_GPL(apei_resources_sub);
+
+/*
+ * IO memory/port rersource management mechanism is used to check
+ * whether memory/port area used by GARs conflicts with normal memory
+ * or IO memory/port of devices.
+ */
+int apei_resources_request(struct apei_resources *resources,
+			   const char *desc)
+{
+	struct apei_res *res, *res_bak;
+	struct resource *r;
+
+	apei_resources_sub(resources, &apei_resources_all);
+
+	list_for_each_entry(res, &resources->iomem, list) {
+		r = request_mem_region(res->start, res->end - res->start,
+				       desc);
+		if (!r) {
+			pr_err(APEI_PFX
+		"Can not request iomem region <%016llx-%016llx> for GARs.\n",
+			       (unsigned long long)res->start,
+			       (unsigned long long)res->end);
+			res_bak = res;
+			goto err_unmap_iomem;
+		}
+	}
+
+	list_for_each_entry(res, &resources->ioport, list) {
+		r = request_region(res->start, res->end - res->start, desc);
+		if (!r) {
+			pr_err(APEI_PFX
+		"Can not request ioport region <%016llx-%016llx> for GARs.\n",
+			       (unsigned long long)res->start,
+			       (unsigned long long)res->end);
+			res_bak = res;
+			goto err_unmap_ioport;
+		}
+	}
+
+	apei_resources_merge(&apei_resources_all, resources);
+
+	return 0;
+err_unmap_ioport:
+	list_for_each_entry(res, &resources->ioport, list) {
+		if (res == res_bak)
+			break;
+		release_mem_region(res->start, res->end - res->start);
+	}
+	res_bak = NULL;
+err_unmap_iomem:
+	list_for_each_entry(res, &resources->iomem, list) {
+		if (res == res_bak)
+			break;
+		release_region(res->start, res->end - res->start);
+	}
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(apei_resources_request);
+
+void apei_resources_release(struct apei_resources *resources)
+{
+	struct apei_res *res;
+
+	list_for_each_entry(res, &resources->iomem, list)
+		release_mem_region(res->start, res->end - res->start);
+	list_for_each_entry(res, &resources->ioport, list)
+		release_region(res->start, res->end - res->start);
+
+	apei_resources_sub(&apei_resources_all, resources);
+}
+EXPORT_SYMBOL_GPL(apei_resources_release);
+
+static int apei_check_gar(struct acpi_generic_address *reg, u64 *paddr)
+{
+	u32 width, space_id;
+
+	width = reg->bit_width;
+	space_id = reg->space_id;
+	/* Handle possible alignment issues */
+	memcpy(paddr, &reg->address, sizeof(*paddr));
+	if (!*paddr) {
+		pr_warning(FW_BUG APEI_PFX
+			   "Invalid physical address in GAR [0x%llx/%u/%u]\n",
+			   *paddr, width, space_id);
+		return -EINVAL;
+	}
+
+	if ((width != 8) && (width != 16) && (width != 32) && (width != 64)) {
+		pr_warning(FW_BUG APEI_PFX
+			   "Invalid bit width in GAR [0x%llx/%u/%u]\n",
+			   *paddr, width, space_id);
+		return -EINVAL;
+	}
+
+	if (space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY &&
+	    space_id != ACPI_ADR_SPACE_SYSTEM_IO) {
+		pr_warning(FW_BUG APEI_PFX
+			   "Invalid address space type in GAR [0x%llx/%u/%u]\n",
+			   *paddr, width, space_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int collect_res_callback(struct apei_exec_context *ctx,
+				struct acpi_whea_header *entry,
+				void *data)
+{
+	struct apei_resources *resources = data;
+	struct acpi_generic_address *reg = &entry->register_region;
+	u8 ins = entry->instruction;
+	u64 paddr;
+	int rc;
+
+	if (!(ctx->ins_table[ins].flags & APEI_EXEC_INS_ACCESS_REGISTER))
+		return 0;
+
+	rc = apei_check_gar(reg, &paddr);
+	if (rc)
+		return rc;
+
+	switch (reg->space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+		return apei_res_add(&resources->iomem, paddr,
+				    reg->bit_width / 8);
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		return apei_res_add(&resources->ioport, paddr,
+				    reg->bit_width / 8);
+	default:
+		return -EINVAL;
+	}
+}
+
+/*
+ * Same register may be used by multiple instructions in GARs, so
+ * resources are collected before requesting.
+ */
+int apei_exec_collect_resources(struct apei_exec_context *ctx,
+				struct apei_resources *resources)
+{
+	return apei_exec_for_each_entry(ctx, collect_res_callback,
+					resources, NULL);
+}
+EXPORT_SYMBOL_GPL(apei_exec_collect_resources);
+
+struct dentry *apei_get_debugfs_dir(void)
+{
+	static struct dentry *dapei;
+
+	if (!dapei)
+		dapei = debugfs_create_dir("apei", NULL);
+
+	return dapei;
+}
+EXPORT_SYMBOL_GPL(apei_get_debugfs_dir);
diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
new file mode 100644
index 0000000..18df1e9
--- /dev/null
+++ b/drivers/acpi/apei/apei-internal.h
@@ -0,0 +1,114 @@
+/*
+ * apei-internal.h - ACPI Platform Error Interface internal
+ * definations.
+ */
+
+#ifndef APEI_INTERNAL_H
+#define APEI_INTERNAL_H
+
+#include <linux/cper.h>
+
+struct apei_exec_context;
+
+typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
+				    struct acpi_whea_header *entry);
+
+#define APEI_EXEC_INS_ACCESS_REGISTER	0x0001
+
+struct apei_exec_ins_type {
+	u32 flags;
+	apei_exec_ins_func_t run;
+};
+
+struct apei_exec_context {
+	u32 ip;
+	u64 value;
+	u64 var1;
+	u64 var2;
+	u64 src_base;
+	u64 dst_base;
+	struct apei_exec_ins_type *ins_table;
+	u32 instructions;
+	struct acpi_whea_header *action_table;
+	u32 entries;
+};
+
+void apei_exec_ctx_init(struct apei_exec_context *ctx,
+			struct apei_exec_ins_type *ins_table,
+			u32 instructions,
+			struct acpi_whea_header *action_table,
+			u32 entries);
+
+static inline void apei_exec_ctx_set_input(struct apei_exec_context *ctx,
+					   u64 input)
+{
+	ctx->value = input;
+}
+
+static inline u64 apei_exec_ctx_get_output(struct apei_exec_context *ctx)
+{
+	return ctx->value;
+}
+
+int apei_exec_run(struct apei_exec_context *ctx, u8 action);
+
+/* Common instruction implementation */
+
+/* IP has been set in instruction function */
+#define APEI_EXEC_SET_IP	1
+
+int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val);
+int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val);
+int apei_exec_read_register(struct apei_exec_context *ctx,
+			    struct acpi_whea_header *entry);
+int apei_exec_read_register_value(struct apei_exec_context *ctx,
+				  struct acpi_whea_header *entry);
+int apei_exec_write_register(struct apei_exec_context *ctx,
+			     struct acpi_whea_header *entry);
+int apei_exec_write_register_value(struct apei_exec_context *ctx,
+				   struct acpi_whea_header *entry);
+int apei_exec_noop(struct apei_exec_context *ctx,
+		   struct acpi_whea_header *entry);
+int apei_exec_pre_map_gars(struct apei_exec_context *ctx);
+int apei_exec_post_unmap_gars(struct apei_exec_context *ctx);
+
+struct apei_resources {
+	struct list_head iomem;
+	struct list_head ioport;
+};
+
+static inline void apei_resources_init(struct apei_resources *resources)
+{
+	INIT_LIST_HEAD(&resources->iomem);
+	INIT_LIST_HEAD(&resources->ioport);
+}
+
+void apei_resources_fini(struct apei_resources *resources);
+int apei_resources_sub(struct apei_resources *resources1,
+		       struct apei_resources *resources2);
+int apei_resources_request(struct apei_resources *resources,
+			   const char *desc);
+void apei_resources_release(struct apei_resources *resources);
+int apei_exec_collect_resources(struct apei_exec_context *ctx,
+				struct apei_resources *resources);
+
+struct dentry;
+struct dentry *apei_get_debugfs_dir(void);
+
+#define apei_estatus_for_each_section(estatus, section)			\
+	for (section = (struct acpi_hest_generic_data *)(estatus + 1);	\
+	     (void *)section - (void *)estatus < estatus->data_length;	\
+	     section = (void *)(section+1) + section->error_data_length)
+
+static inline u32 apei_estatus_len(struct acpi_hest_generic_status *estatus)
+{
+	if (estatus->raw_data_length)
+		return estatus->raw_data_offset + \
+			estatus->raw_data_length;
+	else
+		return sizeof(*estatus) + estatus->data_length;
+}
+
+int apei_estatus_check_header(const struct acpi_hest_generic_status *estatus);
+int apei_estatus_check(const struct acpi_hest_generic_status *estatus);
+#endif
diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c
new file mode 100644
index 0000000..f4cf2fc
--- /dev/null
+++ b/drivers/acpi/apei/cper.c
@@ -0,0 +1,84 @@
+/*
+ * UEFI Common Platform Error Record (CPER) support
+ *
+ * Copyright (C) 2010, Intel Corp.
+ *	Author: Huang Ying <ying.huang@intel.com>
+ *
+ * CPER is the format used to describe platform hardware error by
+ * various APEI tables, such as ERST, BERT and HEST etc.
+ *
+ * For more information about CPER, please refer to Appendix N of UEFI
+ * Specification version 2.3.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/cper.h>
+#include <linux/acpi.h>
+
+/*
+ * CPER record ID need to be unique even after reboot, because record
+ * ID is used as index for ERST storage, while CPER records from
+ * multiple boot may co-exist in ERST.
+ */
+u64 cper_next_record_id(void)
+{
+	static atomic64_t seq;
+
+	if (!atomic64_read(&seq))
+		atomic64_set(&seq, ((u64)get_seconds()) << 32);
+
+	return atomic64_inc_return(&seq);
+}
+EXPORT_SYMBOL_GPL(cper_next_record_id);
+
+int apei_estatus_check_header(const struct acpi_hest_generic_status *estatus)
+{
+	if (estatus->data_length &&
+	    estatus->data_length < sizeof(struct acpi_hest_generic_data))
+		return -EINVAL;
+	if (estatus->raw_data_length &&
+	    estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
+		return -EINVAL;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_estatus_check_header);
+
+int apei_estatus_check(const struct acpi_hest_generic_status *estatus)
+{
+	struct acpi_hest_generic_data *gdata;
+	unsigned int data_len, gedata_len;
+	int rc;
+
+	rc = apei_estatus_check_header(estatus);
+	if (rc)
+		return rc;
+	data_len = estatus->data_length;
+	gdata = (struct acpi_hest_generic_data *)(estatus + 1);
+	while (data_len > sizeof(*gdata)) {
+		gedata_len = gdata->error_data_length;
+		if (gedata_len > data_len - sizeof(*gdata))
+			return -EINVAL;
+		data_len -= gedata_len + sizeof(*gdata);
+	}
+	if (data_len)
+		return -EINVAL;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_estatus_check);
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
new file mode 100644
index 0000000..465c885
--- /dev/null
+++ b/drivers/acpi/apei/einj.c
@@ -0,0 +1,548 @@
+/*
+ * APEI Error INJection support
+ *
+ * EINJ provides a hardware error injection mechanism, this is useful
+ * for debugging and testing of other APEI and RAS features.
+ *
+ * For more information about EINJ, please refer to ACPI Specification
+ * version 4.0, section 17.5.
+ *
+ * Copyright 2009-2010 Intel Corp.
+ *   Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/nmi.h>
+#include <linux/delay.h>
+#include <acpi/acpi.h>
+
+#include "apei-internal.h"
+
+#define EINJ_PFX "EINJ: "
+
+#define SPIN_UNIT		100			/* 100ns */
+/* Firmware should respond within 1 miliseconds */
+#define FIRMWARE_TIMEOUT	(1 * NSEC_PER_MSEC)
+
+/*
+ * Some BIOSes allow parameters to the SET_ERROR_TYPE entries in the
+ * EINJ table through an unpublished extension. Use with caution as
+ * most will ignore the parameter and make their own choice of address
+ * for error injection.
+ */
+struct einj_parameter {
+	u64 type;
+	u64 reserved1;
+	u64 reserved2;
+	u64 param1;
+	u64 param2;
+};
+
+#define EINJ_OP_BUSY			0x1
+#define EINJ_STATUS_SUCCESS		0x0
+#define EINJ_STATUS_FAIL		0x1
+#define EINJ_STATUS_INVAL		0x2
+
+#define EINJ_TAB_ENTRY(tab)						\
+	((struct acpi_whea_header *)((char *)(tab) +			\
+				    sizeof(struct acpi_table_einj)))
+
+static struct acpi_table_einj *einj_tab;
+
+static struct apei_resources einj_resources;
+
+static struct apei_exec_ins_type einj_ins_type[] = {
+	[ACPI_EINJ_READ_REGISTER] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run   = apei_exec_read_register,
+	},
+	[ACPI_EINJ_READ_REGISTER_VALUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run   = apei_exec_read_register_value,
+	},
+	[ACPI_EINJ_WRITE_REGISTER] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run   = apei_exec_write_register,
+	},
+	[ACPI_EINJ_WRITE_REGISTER_VALUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run   = apei_exec_write_register_value,
+	},
+	[ACPI_EINJ_NOOP] = {
+		.flags = 0,
+		.run   = apei_exec_noop,
+	},
+};
+
+/*
+ * Prevent EINJ interpreter to run simultaneously, because the
+ * corresponding firmware implementation may not work properly when
+ * invoked simultaneously.
+ */
+static DEFINE_MUTEX(einj_mutex);
+
+static struct einj_parameter *einj_param;
+
+static void einj_exec_ctx_init(struct apei_exec_context *ctx)
+{
+	apei_exec_ctx_init(ctx, einj_ins_type, ARRAY_SIZE(einj_ins_type),
+			   EINJ_TAB_ENTRY(einj_tab), einj_tab->entries);
+}
+
+static int __einj_get_available_error_type(u32 *type)
+{
+	struct apei_exec_context ctx;
+	int rc;
+
+	einj_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_EINJ_GET_ERROR_TYPE);
+	if (rc)
+		return rc;
+	*type = apei_exec_ctx_get_output(&ctx);
+
+	return 0;
+}
+
+/* Get error injection capabilities of the platform */
+static int einj_get_available_error_type(u32 *type)
+{
+	int rc;
+
+	mutex_lock(&einj_mutex);
+	rc = __einj_get_available_error_type(type);
+	mutex_unlock(&einj_mutex);
+
+	return rc;
+}
+
+static int einj_timedout(u64 *t)
+{
+	if ((s64)*t < SPIN_UNIT) {
+		pr_warning(FW_WARN EINJ_PFX
+			   "Firmware does not respond in time\n");
+		return 1;
+	}
+	*t -= SPIN_UNIT;
+	ndelay(SPIN_UNIT);
+	touch_nmi_watchdog();
+	return 0;
+}
+
+static u64 einj_get_parameter_address(void)
+{
+	int i;
+	u64 paddr = 0;
+	struct acpi_whea_header *entry;
+
+	entry = EINJ_TAB_ENTRY(einj_tab);
+	for (i = 0; i < einj_tab->entries; i++) {
+		if (entry->action == ACPI_EINJ_SET_ERROR_TYPE &&
+		    entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
+		    entry->register_region.space_id ==
+		    ACPI_ADR_SPACE_SYSTEM_MEMORY)
+			memcpy(&paddr, &entry->register_region.address,
+			       sizeof(paddr));
+		entry++;
+	}
+
+	return paddr;
+}
+
+/* do sanity check to trigger table */
+static int einj_check_trigger_header(struct acpi_einj_trigger *trigger_tab)
+{
+	if (trigger_tab->header_size != sizeof(struct acpi_einj_trigger))
+		return -EINVAL;
+	if (trigger_tab->table_size > PAGE_SIZE ||
+	    trigger_tab->table_size <= trigger_tab->header_size)
+		return -EINVAL;
+	if (trigger_tab->entry_count !=
+	    (trigger_tab->table_size - trigger_tab->header_size) /
+	    sizeof(struct acpi_einj_entry))
+		return -EINVAL;
+
+	return 0;
+}
+
+/* Execute instructions in trigger error action table */
+static int __einj_error_trigger(u64 trigger_paddr)
+{
+	struct acpi_einj_trigger *trigger_tab = NULL;
+	struct apei_exec_context trigger_ctx;
+	struct apei_resources trigger_resources;
+	struct acpi_whea_header *trigger_entry;
+	struct resource *r;
+	u32 table_size;
+	int rc = -EIO;
+
+	r = request_mem_region(trigger_paddr, sizeof(*trigger_tab),
+			       "APEI EINJ Trigger Table");
+	if (!r) {
+		pr_err(EINJ_PFX
+	"Can not request iomem region <%016llx-%016llx> for Trigger table.\n",
+		       (unsigned long long)trigger_paddr,
+		       (unsigned long long)trigger_paddr+sizeof(*trigger_tab));
+		goto out;
+	}
+	trigger_tab = ioremap_cache(trigger_paddr, sizeof(*trigger_tab));
+	if (!trigger_tab) {
+		pr_err(EINJ_PFX "Failed to map trigger table!\n");
+		goto out_rel_header;
+	}
+	rc = einj_check_trigger_header(trigger_tab);
+	if (rc) {
+		pr_warning(FW_BUG EINJ_PFX
+			   "The trigger error action table is invalid\n");
+		goto out_rel_header;
+	}
+	rc = -EIO;
+	table_size = trigger_tab->table_size;
+	r = request_mem_region(trigger_paddr + sizeof(*trigger_tab),
+			       table_size - sizeof(*trigger_tab),
+			       "APEI EINJ Trigger Table");
+	if (!r) {
+		pr_err(EINJ_PFX
+"Can not request iomem region <%016llx-%016llx> for Trigger Table Entry.\n",
+		       (unsigned long long)trigger_paddr+sizeof(*trigger_tab),
+		       (unsigned long long)trigger_paddr + table_size);
+		goto out_rel_header;
+	}
+	iounmap(trigger_tab);
+	trigger_tab = ioremap_cache(trigger_paddr, table_size);
+	if (!trigger_tab) {
+		pr_err(EINJ_PFX "Failed to map trigger table!\n");
+		goto out_rel_entry;
+	}
+	trigger_entry = (struct acpi_whea_header *)
+		((char *)trigger_tab + sizeof(struct acpi_einj_trigger));
+	apei_resources_init(&trigger_resources);
+	apei_exec_ctx_init(&trigger_ctx, einj_ins_type,
+			   ARRAY_SIZE(einj_ins_type),
+			   trigger_entry, trigger_tab->entry_count);
+	rc = apei_exec_collect_resources(&trigger_ctx, &trigger_resources);
+	if (rc)
+		goto out_fini;
+	rc = apei_resources_sub(&trigger_resources, &einj_resources);
+	if (rc)
+		goto out_fini;
+	rc = apei_resources_request(&trigger_resources, "APEI EINJ Trigger");
+	if (rc)
+		goto out_fini;
+	rc = apei_exec_pre_map_gars(&trigger_ctx);
+	if (rc)
+		goto out_release;
+
+	rc = apei_exec_run(&trigger_ctx, ACPI_EINJ_TRIGGER_ERROR);
+
+	apei_exec_post_unmap_gars(&trigger_ctx);
+out_release:
+	apei_resources_release(&trigger_resources);
+out_fini:
+	apei_resources_fini(&trigger_resources);
+out_rel_entry:
+	release_mem_region(trigger_paddr + sizeof(*trigger_tab),
+			   table_size - sizeof(*trigger_tab));
+out_rel_header:
+	release_mem_region(trigger_paddr, sizeof(*trigger_tab));
+out:
+	if (trigger_tab)
+		iounmap(trigger_tab);
+
+	return rc;
+}
+
+static int __einj_error_inject(u32 type, u64 param1, u64 param2)
+{
+	struct apei_exec_context ctx;
+	u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT;
+	int rc;
+
+	einj_exec_ctx_init(&ctx);
+
+	rc = apei_exec_run(&ctx, ACPI_EINJ_BEGIN_OPERATION);
+	if (rc)
+		return rc;
+	apei_exec_ctx_set_input(&ctx, type);
+	rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
+	if (rc)
+		return rc;
+	if (einj_param) {
+		writeq(param1, &einj_param->param1);
+		writeq(param2, &einj_param->param2);
+	}
+	rc = apei_exec_run(&ctx, ACPI_EINJ_EXECUTE_OPERATION);
+	if (rc)
+		return rc;
+	for (;;) {
+		rc = apei_exec_run(&ctx, ACPI_EINJ_CHECK_BUSY_STATUS);
+		if (rc)
+			return rc;
+		val = apei_exec_ctx_get_output(&ctx);
+		if (!(val & EINJ_OP_BUSY))
+			break;
+		if (einj_timedout(&timeout))
+			return -EIO;
+	}
+	rc = apei_exec_run(&ctx, ACPI_EINJ_GET_COMMAND_STATUS);
+	if (rc)
+		return rc;
+	val = apei_exec_ctx_get_output(&ctx);
+	if (val != EINJ_STATUS_SUCCESS)
+		return -EBUSY;
+
+	rc = apei_exec_run(&ctx, ACPI_EINJ_GET_TRIGGER_TABLE);
+	if (rc)
+		return rc;
+	trigger_paddr = apei_exec_ctx_get_output(&ctx);
+	rc = __einj_error_trigger(trigger_paddr);
+	if (rc)
+		return rc;
+	rc = apei_exec_run(&ctx, ACPI_EINJ_END_OPERATION);
+
+	return rc;
+}
+
+/* Inject the specified hardware error */
+static int einj_error_inject(u32 type, u64 param1, u64 param2)
+{
+	int rc;
+
+	mutex_lock(&einj_mutex);
+	rc = __einj_error_inject(type, param1, param2);
+	mutex_unlock(&einj_mutex);
+
+	return rc;
+}
+
+static u32 error_type;
+static u64 error_param1;
+static u64 error_param2;
+static struct dentry *einj_debug_dir;
+
+static int available_error_type_show(struct seq_file *m, void *v)
+{
+	int rc;
+	u32 available_error_type = 0;
+
+	rc = einj_get_available_error_type(&available_error_type);
+	if (rc)
+		return rc;
+	if (available_error_type & 0x0001)
+		seq_printf(m, "0x00000001\tProcessor Correctable\n");
+	if (available_error_type & 0x0002)
+		seq_printf(m, "0x00000002\tProcessor Uncorrectable non-fatal\n");
+	if (available_error_type & 0x0004)
+		seq_printf(m, "0x00000004\tProcessor Uncorrectable fatal\n");
+	if (available_error_type & 0x0008)
+		seq_printf(m, "0x00000008\tMemory Correctable\n");
+	if (available_error_type & 0x0010)
+		seq_printf(m, "0x00000010\tMemory Uncorrectable non-fatal\n");
+	if (available_error_type & 0x0020)
+		seq_printf(m, "0x00000020\tMemory Uncorrectable fatal\n");
+	if (available_error_type & 0x0040)
+		seq_printf(m, "0x00000040\tPCI Express Correctable\n");
+	if (available_error_type & 0x0080)
+		seq_printf(m, "0x00000080\tPCI Express Uncorrectable non-fatal\n");
+	if (available_error_type & 0x0100)
+		seq_printf(m, "0x00000100\tPCI Express Uncorrectable fatal\n");
+	if (available_error_type & 0x0200)
+		seq_printf(m, "0x00000200\tPlatform Correctable\n");
+	if (available_error_type & 0x0400)
+		seq_printf(m, "0x00000400\tPlatform Uncorrectable non-fatal\n");
+	if (available_error_type & 0x0800)
+		seq_printf(m, "0x00000800\tPlatform Uncorrectable fatal\n");
+
+	return 0;
+}
+
+static int available_error_type_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, available_error_type_show, NULL);
+}
+
+static const struct file_operations available_error_type_fops = {
+	.open		= available_error_type_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static int error_type_get(void *data, u64 *val)
+{
+	*val = error_type;
+
+	return 0;
+}
+
+static int error_type_set(void *data, u64 val)
+{
+	int rc;
+	u32 available_error_type = 0;
+
+	/* Only one error type can be specified */
+	if (val & (val - 1))
+		return -EINVAL;
+	rc = einj_get_available_error_type(&available_error_type);
+	if (rc)
+		return rc;
+	if (!(val & available_error_type))
+		return -EINVAL;
+	error_type = val;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(error_type_fops, error_type_get,
+			error_type_set, "0x%llx\n");
+
+static int error_inject_set(void *data, u64 val)
+{
+	if (!error_type)
+		return -EINVAL;
+
+	return einj_error_inject(error_type, error_param1, error_param2);
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(error_inject_fops, NULL,
+			error_inject_set, "%llu\n");
+
+static int einj_check_table(struct acpi_table_einj *einj_tab)
+{
+	if (einj_tab->header_length != sizeof(struct acpi_table_einj))
+		return -EINVAL;
+	if (einj_tab->header.length < sizeof(struct acpi_table_einj))
+		return -EINVAL;
+	if (einj_tab->entries !=
+	    (einj_tab->header.length - sizeof(struct acpi_table_einj)) /
+	    sizeof(struct acpi_einj_entry))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int __init einj_init(void)
+{
+	int rc;
+	u64 param_paddr;
+	acpi_status status;
+	struct dentry *fentry;
+	struct apei_exec_context ctx;
+
+	if (acpi_disabled)
+		return -ENODEV;
+
+	status = acpi_get_table(ACPI_SIG_EINJ, 0,
+				(struct acpi_table_header **)&einj_tab);
+	if (status == AE_NOT_FOUND) {
+		pr_info(EINJ_PFX "Table is not found!\n");
+		return -ENODEV;
+	} else if (ACPI_FAILURE(status)) {
+		const char *msg = acpi_format_exception(status);
+		pr_err(EINJ_PFX "Failed to get table, %s\n", msg);
+		return -EINVAL;
+	}
+
+	rc = einj_check_table(einj_tab);
+	if (rc) {
+		pr_warning(FW_BUG EINJ_PFX "EINJ table is invalid\n");
+		return -EINVAL;
+	}
+
+	rc = -ENOMEM;
+	einj_debug_dir = debugfs_create_dir("einj", apei_get_debugfs_dir());
+	if (!einj_debug_dir)
+		goto err_cleanup;
+	fentry = debugfs_create_file("available_error_type", S_IRUSR,
+				     einj_debug_dir, NULL,
+				     &available_error_type_fops);
+	if (!fentry)
+		goto err_cleanup;
+	fentry = debugfs_create_file("error_type", S_IRUSR | S_IWUSR,
+				     einj_debug_dir, NULL, &error_type_fops);
+	if (!fentry)
+		goto err_cleanup;
+	fentry = debugfs_create_x64("param1", S_IRUSR | S_IWUSR,
+				    einj_debug_dir, &error_param1);
+	if (!fentry)
+		goto err_cleanup;
+	fentry = debugfs_create_x64("param2", S_IRUSR | S_IWUSR,
+				    einj_debug_dir, &error_param2);
+	if (!fentry)
+		goto err_cleanup;
+	fentry = debugfs_create_file("error_inject", S_IWUSR,
+				     einj_debug_dir, NULL, &error_inject_fops);
+	if (!fentry)
+		goto err_cleanup;
+
+	apei_resources_init(&einj_resources);
+	einj_exec_ctx_init(&ctx);
+	rc = apei_exec_collect_resources(&ctx, &einj_resources);
+	if (rc)
+		goto err_fini;
+	rc = apei_resources_request(&einj_resources, "APEI EINJ");
+	if (rc)
+		goto err_fini;
+	rc = apei_exec_pre_map_gars(&ctx);
+	if (rc)
+		goto err_release;
+	param_paddr = einj_get_parameter_address();
+	if (param_paddr) {
+		einj_param = ioremap(param_paddr, sizeof(*einj_param));
+		rc = -ENOMEM;
+		if (!einj_param)
+			goto err_unmap;
+	}
+
+	pr_info(EINJ_PFX "Error INJection is initialized.\n");
+
+	return 0;
+
+err_unmap:
+	apei_exec_post_unmap_gars(&ctx);
+err_release:
+	apei_resources_release(&einj_resources);
+err_fini:
+	apei_resources_fini(&einj_resources);
+err_cleanup:
+	debugfs_remove_recursive(einj_debug_dir);
+
+	return rc;
+}
+
+static void __exit einj_exit(void)
+{
+	struct apei_exec_context ctx;
+
+	if (einj_param)
+		iounmap(einj_param);
+	einj_exec_ctx_init(&ctx);
+	apei_exec_post_unmap_gars(&ctx);
+	apei_resources_release(&einj_resources);
+	apei_resources_fini(&einj_resources);
+	debugfs_remove_recursive(einj_debug_dir);
+}
+
+module_init(einj_init);
+module_exit(einj_exit);
+
+MODULE_AUTHOR("Huang Ying");
+MODULE_DESCRIPTION("APEI Error INJection support");
+MODULE_LICENSE("GPL");
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
new file mode 100644
index 0000000..2ebc391
--- /dev/null
+++ b/drivers/acpi/apei/erst.c
@@ -0,0 +1,855 @@
+/*
+ * APEI Error Record Serialization Table support
+ *
+ * ERST is a way provided by APEI to save and retrieve hardware error
+ * infomation to and from a persistent store.
+ *
+ * For more information about ERST, please refer to ACPI Specification
+ * version 4.0, section 17.4.
+ *
+ * Copyright 2010 Intel Corp.
+ *   Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/acpi.h>
+#include <linux/uaccess.h>
+#include <linux/cper.h>
+#include <linux/nmi.h>
+#include <acpi/apei.h>
+
+#include "apei-internal.h"
+
+#define ERST_PFX "ERST: "
+
+/* ERST command status */
+#define ERST_STATUS_SUCCESS			0x0
+#define ERST_STATUS_NOT_ENOUGH_SPACE		0x1
+#define ERST_STATUS_HARDWARE_NOT_AVAILABLE	0x2
+#define ERST_STATUS_FAILED			0x3
+#define ERST_STATUS_RECORD_STORE_EMPTY		0x4
+#define ERST_STATUS_RECORD_NOT_FOUND		0x5
+
+#define ERST_TAB_ENTRY(tab)						\
+	((struct acpi_whea_header *)((char *)(tab) +			\
+				     sizeof(struct acpi_table_erst)))
+
+#define SPIN_UNIT		100			/* 100ns */
+/* Firmware should respond within 1 miliseconds */
+#define FIRMWARE_TIMEOUT	(1 * NSEC_PER_MSEC)
+#define FIRMWARE_MAX_STALL	50			/* 50us */
+
+int erst_disable;
+EXPORT_SYMBOL_GPL(erst_disable);
+
+static struct acpi_table_erst *erst_tab;
+
+/* ERST Error Log Address Range atrributes */
+#define ERST_RANGE_RESERVED	0x0001
+#define ERST_RANGE_NVRAM	0x0002
+#define ERST_RANGE_SLOW		0x0004
+
+/*
+ * ERST Error Log Address Range, used as buffer for reading/writing
+ * error records.
+ */
+static struct erst_erange {
+	u64 base;
+	u64 size;
+	void __iomem *vaddr;
+	u32 attr;
+} erst_erange;
+
+/*
+ * Prevent ERST interpreter to run simultaneously, because the
+ * corresponding firmware implementation may not work properly when
+ * invoked simultaneously.
+ *
+ * It is used to provide exclusive accessing for ERST Error Log
+ * Address Range too.
+ */
+static DEFINE_SPINLOCK(erst_lock);
+
+static inline int erst_errno(int command_status)
+{
+	switch (command_status) {
+	case ERST_STATUS_SUCCESS:
+		return 0;
+	case ERST_STATUS_HARDWARE_NOT_AVAILABLE:
+		return -ENODEV;
+	case ERST_STATUS_NOT_ENOUGH_SPACE:
+		return -ENOSPC;
+	case ERST_STATUS_RECORD_STORE_EMPTY:
+	case ERST_STATUS_RECORD_NOT_FOUND:
+		return -ENOENT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int erst_timedout(u64 *t, u64 spin_unit)
+{
+	if ((s64)*t < spin_unit) {
+		pr_warning(FW_WARN ERST_PFX
+			   "Firmware does not respond in time\n");
+		return 1;
+	}
+	*t -= spin_unit;
+	ndelay(spin_unit);
+	touch_nmi_watchdog();
+	return 0;
+}
+
+static int erst_exec_load_var1(struct apei_exec_context *ctx,
+			       struct acpi_whea_header *entry)
+{
+	return __apei_exec_read_register(entry, &ctx->var1);
+}
+
+static int erst_exec_load_var2(struct apei_exec_context *ctx,
+			       struct acpi_whea_header *entry)
+{
+	return __apei_exec_read_register(entry, &ctx->var2);
+}
+
+static int erst_exec_store_var1(struct apei_exec_context *ctx,
+				struct acpi_whea_header *entry)
+{
+	return __apei_exec_write_register(entry, ctx->var1);
+}
+
+static int erst_exec_add(struct apei_exec_context *ctx,
+			 struct acpi_whea_header *entry)
+{
+	ctx->var1 += ctx->var2;
+	return 0;
+}
+
+static int erst_exec_subtract(struct apei_exec_context *ctx,
+			      struct acpi_whea_header *entry)
+{
+	ctx->var1 -= ctx->var2;
+	return 0;
+}
+
+static int erst_exec_add_value(struct apei_exec_context *ctx,
+			       struct acpi_whea_header *entry)
+{
+	int rc;
+	u64 val;
+
+	rc = __apei_exec_read_register(entry, &val);
+	if (rc)
+		return rc;
+	val += ctx->value;
+	rc = __apei_exec_write_register(entry, val);
+	return rc;
+}
+
+static int erst_exec_subtract_value(struct apei_exec_context *ctx,
+				    struct acpi_whea_header *entry)
+{
+	int rc;
+	u64 val;
+
+	rc = __apei_exec_read_register(entry, &val);
+	if (rc)
+		return rc;
+	val -= ctx->value;
+	rc = __apei_exec_write_register(entry, val);
+	return rc;
+}
+
+static int erst_exec_stall(struct apei_exec_context *ctx,
+			   struct acpi_whea_header *entry)
+{
+	u64 stall_time;
+
+	if (ctx->value > FIRMWARE_MAX_STALL) {
+		if (!in_nmi())
+			pr_warning(FW_WARN ERST_PFX
+			"Too long stall time for stall instruction: %llx.\n",
+				   ctx->value);
+		stall_time = FIRMWARE_MAX_STALL;
+	} else
+		stall_time = ctx->value;
+	udelay(stall_time);
+	return 0;
+}
+
+static int erst_exec_stall_while_true(struct apei_exec_context *ctx,
+				      struct acpi_whea_header *entry)
+{
+	int rc;
+	u64 val;
+	u64 timeout = FIRMWARE_TIMEOUT;
+	u64 stall_time;
+
+	if (ctx->var1 > FIRMWARE_MAX_STALL) {
+		if (!in_nmi())
+			pr_warning(FW_WARN ERST_PFX
+		"Too long stall time for stall while true instruction: %llx.\n",
+				   ctx->var1);
+		stall_time = FIRMWARE_MAX_STALL;
+	} else
+		stall_time = ctx->var1;
+
+	for (;;) {
+		rc = __apei_exec_read_register(entry, &val);
+		if (rc)
+			return rc;
+		if (val != ctx->value)
+			break;
+		if (erst_timedout(&timeout, stall_time * NSEC_PER_USEC))
+			return -EIO;
+	}
+	return 0;
+}
+
+static int erst_exec_skip_next_instruction_if_true(
+	struct apei_exec_context *ctx,
+	struct acpi_whea_header *entry)
+{
+	int rc;
+	u64 val;
+
+	rc = __apei_exec_read_register(entry, &val);
+	if (rc)
+		return rc;
+	if (val == ctx->value) {
+		ctx->ip += 2;
+		return APEI_EXEC_SET_IP;
+	}
+
+	return 0;
+}
+
+static int erst_exec_goto(struct apei_exec_context *ctx,
+			  struct acpi_whea_header *entry)
+{
+	ctx->ip = ctx->value;
+	return APEI_EXEC_SET_IP;
+}
+
+static int erst_exec_set_src_address_base(struct apei_exec_context *ctx,
+					  struct acpi_whea_header *entry)
+{
+	return __apei_exec_read_register(entry, &ctx->src_base);
+}
+
+static int erst_exec_set_dst_address_base(struct apei_exec_context *ctx,
+					  struct acpi_whea_header *entry)
+{
+	return __apei_exec_read_register(entry, &ctx->dst_base);
+}
+
+static int erst_exec_move_data(struct apei_exec_context *ctx,
+			       struct acpi_whea_header *entry)
+{
+	int rc;
+	u64 offset;
+
+	rc = __apei_exec_read_register(entry, &offset);
+	if (rc)
+		return rc;
+	memmove((void *)ctx->dst_base + offset,
+		(void *)ctx->src_base + offset,
+		ctx->var2);
+
+	return 0;
+}
+
+static struct apei_exec_ins_type erst_ins_type[] = {
+	[ACPI_ERST_READ_REGISTER] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = apei_exec_read_register,
+	},
+	[ACPI_ERST_READ_REGISTER_VALUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = apei_exec_read_register_value,
+	},
+	[ACPI_ERST_WRITE_REGISTER] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = apei_exec_write_register,
+	},
+	[ACPI_ERST_WRITE_REGISTER_VALUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = apei_exec_write_register_value,
+	},
+	[ACPI_ERST_NOOP] = {
+		.flags = 0,
+		.run = apei_exec_noop,
+	},
+	[ACPI_ERST_LOAD_VAR1] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_load_var1,
+	},
+	[ACPI_ERST_LOAD_VAR2] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_load_var2,
+	},
+	[ACPI_ERST_STORE_VAR1] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_store_var1,
+	},
+	[ACPI_ERST_ADD] = {
+		.flags = 0,
+		.run = erst_exec_add,
+	},
+	[ACPI_ERST_SUBTRACT] = {
+		.flags = 0,
+		.run = erst_exec_subtract,
+	},
+	[ACPI_ERST_ADD_VALUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_add_value,
+	},
+	[ACPI_ERST_SUBTRACT_VALUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_subtract_value,
+	},
+	[ACPI_ERST_STALL] = {
+		.flags = 0,
+		.run = erst_exec_stall,
+	},
+	[ACPI_ERST_STALL_WHILE_TRUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_stall_while_true,
+	},
+	[ACPI_ERST_SKIP_NEXT_IF_TRUE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_skip_next_instruction_if_true,
+	},
+	[ACPI_ERST_GOTO] = {
+		.flags = 0,
+		.run = erst_exec_goto,
+	},
+	[ACPI_ERST_SET_SRC_ADDRESS_BASE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_set_src_address_base,
+	},
+	[ACPI_ERST_SET_DST_ADDRESS_BASE] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_set_dst_address_base,
+	},
+	[ACPI_ERST_MOVE_DATA] = {
+		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
+		.run = erst_exec_move_data,
+	},
+};
+
+static inline void erst_exec_ctx_init(struct apei_exec_context *ctx)
+{
+	apei_exec_ctx_init(ctx, erst_ins_type, ARRAY_SIZE(erst_ins_type),
+			   ERST_TAB_ENTRY(erst_tab), erst_tab->entries);
+}
+
+static int erst_get_erange(struct erst_erange *range)
+{
+	struct apei_exec_context ctx;
+	int rc;
+
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_ERROR_RANGE);
+	if (rc)
+		return rc;
+	range->base = apei_exec_ctx_get_output(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_ERROR_LENGTH);
+	if (rc)
+		return rc;
+	range->size = apei_exec_ctx_get_output(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_ERROR_ATTRIBUTES);
+	if (rc)
+		return rc;
+	range->attr = apei_exec_ctx_get_output(&ctx);
+
+	return 0;
+}
+
+static ssize_t __erst_get_record_count(void)
+{
+	struct apei_exec_context ctx;
+	int rc;
+
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_RECORD_COUNT);
+	if (rc)
+		return rc;
+	return apei_exec_ctx_get_output(&ctx);
+}
+
+ssize_t erst_get_record_count(void)
+{
+	ssize_t count;
+	unsigned long flags;
+
+	if (erst_disable)
+		return -ENODEV;
+
+	spin_lock_irqsave(&erst_lock, flags);
+	count = __erst_get_record_count();
+	spin_unlock_irqrestore(&erst_lock, flags);
+
+	return count;
+}
+EXPORT_SYMBOL_GPL(erst_get_record_count);
+
+static int __erst_get_next_record_id(u64 *record_id)
+{
+	struct apei_exec_context ctx;
+	int rc;
+
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_RECORD_ID);
+	if (rc)
+		return rc;
+	*record_id = apei_exec_ctx_get_output(&ctx);
+
+	return 0;
+}
+
+/*
+ * Get the record ID of an existing error record on the persistent
+ * storage. If there is no error record on the persistent storage, the
+ * returned record_id is APEI_ERST_INVALID_RECORD_ID.
+ */
+int erst_get_next_record_id(u64 *record_id)
+{
+	int rc;
+	unsigned long flags;
+
+	if (erst_disable)
+		return -ENODEV;
+
+	spin_lock_irqsave(&erst_lock, flags);
+	rc = __erst_get_next_record_id(record_id);
+	spin_unlock_irqrestore(&erst_lock, flags);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(erst_get_next_record_id);
+
+static int __erst_write_to_storage(u64 offset)
+{
+	struct apei_exec_context ctx;
+	u64 timeout = FIRMWARE_TIMEOUT;
+	u64 val;
+	int rc;
+
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_BEGIN_WRITE);
+	if (rc)
+		return rc;
+	apei_exec_ctx_set_input(&ctx, offset);
+	rc = apei_exec_run(&ctx, ACPI_ERST_SET_RECORD_OFFSET);
+	if (rc)
+		return rc;
+	rc = apei_exec_run(&ctx, ACPI_ERST_EXECUTE_OPERATION);
+	if (rc)
+		return rc;
+	for (;;) {
+		rc = apei_exec_run(&ctx, ACPI_ERST_CHECK_BUSY_STATUS);
+		if (rc)
+			return rc;
+		val = apei_exec_ctx_get_output(&ctx);
+		if (!val)
+			break;
+		if (erst_timedout(&timeout, SPIN_UNIT))
+			return -EIO;
+	}
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_COMMAND_STATUS);
+	if (rc)
+		return rc;
+	val = apei_exec_ctx_get_output(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_END);
+	if (rc)
+		return rc;
+
+	return erst_errno(val);
+}
+
+static int __erst_read_from_storage(u64 record_id, u64 offset)
+{
+	struct apei_exec_context ctx;
+	u64 timeout = FIRMWARE_TIMEOUT;
+	u64 val;
+	int rc;
+
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_BEGIN_READ);
+	if (rc)
+		return rc;
+	apei_exec_ctx_set_input(&ctx, offset);
+	rc = apei_exec_run(&ctx, ACPI_ERST_SET_RECORD_OFFSET);
+	if (rc)
+		return rc;
+	apei_exec_ctx_set_input(&ctx, record_id);
+	rc = apei_exec_run(&ctx, ACPI_ERST_SET_RECORD_ID);
+	if (rc)
+		return rc;
+	rc = apei_exec_run(&ctx, ACPI_ERST_EXECUTE_OPERATION);
+	if (rc)
+		return rc;
+	for (;;) {
+		rc = apei_exec_run(&ctx, ACPI_ERST_CHECK_BUSY_STATUS);
+		if (rc)
+			return rc;
+		val = apei_exec_ctx_get_output(&ctx);
+		if (!val)
+			break;
+		if (erst_timedout(&timeout, SPIN_UNIT))
+			return -EIO;
+	};
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_COMMAND_STATUS);
+	if (rc)
+		return rc;
+	val = apei_exec_ctx_get_output(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_END);
+	if (rc)
+		return rc;
+
+	return erst_errno(val);
+}
+
+static int __erst_clear_from_storage(u64 record_id)
+{
+	struct apei_exec_context ctx;
+	u64 timeout = FIRMWARE_TIMEOUT;
+	u64 val;
+	int rc;
+
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_BEGIN_CLEAR);
+	if (rc)
+		return rc;
+	apei_exec_ctx_set_input(&ctx, record_id);
+	rc = apei_exec_run(&ctx, ACPI_ERST_SET_RECORD_ID);
+	if (rc)
+		return rc;
+	rc = apei_exec_run(&ctx, ACPI_ERST_EXECUTE_OPERATION);
+	if (rc)
+		return rc;
+	for (;;) {
+		rc = apei_exec_run(&ctx, ACPI_ERST_CHECK_BUSY_STATUS);
+		if (rc)
+			return rc;
+		val = apei_exec_ctx_get_output(&ctx);
+		if (!val)
+			break;
+		if (erst_timedout(&timeout, SPIN_UNIT))
+			return -EIO;
+	}
+	rc = apei_exec_run(&ctx, ACPI_ERST_GET_COMMAND_STATUS);
+	if (rc)
+		return rc;
+	val = apei_exec_ctx_get_output(&ctx);
+	rc = apei_exec_run(&ctx, ACPI_ERST_END);
+	if (rc)
+		return rc;
+
+	return erst_errno(val);
+}
+
+/* NVRAM ERST Error Log Address Range is not supported yet */
+static void pr_unimpl_nvram(void)
+{
+	if (printk_ratelimit())
+		pr_warning(ERST_PFX
+		"NVRAM ERST Log Address Range is not implemented yet\n");
+}
+
+static int __erst_write_to_nvram(const struct cper_record_header *record)
+{
+	/* do not print message, because printk is not safe for NMI */
+	return -ENOSYS;
+}
+
+static int __erst_read_to_erange_from_nvram(u64 record_id, u64 *offset)
+{
+	pr_unimpl_nvram();
+	return -ENOSYS;
+}
+
+static int __erst_clear_from_nvram(u64 record_id)
+{
+	pr_unimpl_nvram();
+	return -ENOSYS;
+}
+
+int erst_write(const struct cper_record_header *record)
+{
+	int rc;
+	unsigned long flags;
+	struct cper_record_header *rcd_erange;
+
+	if (erst_disable)
+		return -ENODEV;
+
+	if (memcmp(record->signature, CPER_SIG_RECORD, CPER_SIG_SIZE))
+		return -EINVAL;
+
+	if (erst_erange.attr & ERST_RANGE_NVRAM) {
+		if (!spin_trylock_irqsave(&erst_lock, flags))
+			return -EBUSY;
+		rc = __erst_write_to_nvram(record);
+		spin_unlock_irqrestore(&erst_lock, flags);
+		return rc;
+	}
+
+	if (record->record_length > erst_erange.size)
+		return -EINVAL;
+
+	if (!spin_trylock_irqsave(&erst_lock, flags))
+		return -EBUSY;
+	memcpy(erst_erange.vaddr, record, record->record_length);
+	rcd_erange = erst_erange.vaddr;
+	/* signature for serialization system */
+	memcpy(&rcd_erange->persistence_information, "ER", 2);
+
+	rc = __erst_write_to_storage(0);
+	spin_unlock_irqrestore(&erst_lock, flags);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(erst_write);
+
+static int __erst_read_to_erange(u64 record_id, u64 *offset)
+{
+	int rc;
+
+	if (erst_erange.attr & ERST_RANGE_NVRAM)
+		return __erst_read_to_erange_from_nvram(
+			record_id, offset);
+
+	rc = __erst_read_from_storage(record_id, 0);
+	if (rc)
+		return rc;
+	*offset = 0;
+
+	return 0;
+}
+
+static ssize_t __erst_read(u64 record_id, struct cper_record_header *record,
+			   size_t buflen)
+{
+	int rc;
+	u64 offset, len = 0;
+	struct cper_record_header *rcd_tmp;
+
+	rc = __erst_read_to_erange(record_id, &offset);
+	if (rc)
+		return rc;
+	rcd_tmp = erst_erange.vaddr + offset;
+	len = rcd_tmp->record_length;
+	if (len <= buflen)
+		memcpy(record, rcd_tmp, len);
+
+	return len;
+}
+
+/*
+ * If return value > buflen, the buffer size is not big enough,
+ * else if return value < 0, something goes wrong,
+ * else everything is OK, and return value is record length
+ */
+ssize_t erst_read(u64 record_id, struct cper_record_header *record,
+		  size_t buflen)
+{
+	ssize_t len;
+	unsigned long flags;
+
+	if (erst_disable)
+		return -ENODEV;
+
+	spin_lock_irqsave(&erst_lock, flags);
+	len = __erst_read(record_id, record, buflen);
+	spin_unlock_irqrestore(&erst_lock, flags);
+	return len;
+}
+EXPORT_SYMBOL_GPL(erst_read);
+
+/*
+ * If return value > buflen, the buffer size is not big enough,
+ * else if return value = 0, there is no more record to read,
+ * else if return value < 0, something goes wrong,
+ * else everything is OK, and return value is record length
+ */
+ssize_t erst_read_next(struct cper_record_header *record, size_t buflen)
+{
+	int rc;
+	ssize_t len;
+	unsigned long flags;
+	u64 record_id;
+
+	if (erst_disable)
+		return -ENODEV;
+
+	spin_lock_irqsave(&erst_lock, flags);
+	rc = __erst_get_next_record_id(&record_id);
+	if (rc) {
+		spin_unlock_irqrestore(&erst_lock, flags);
+		return rc;
+	}
+	/* no more record */
+	if (record_id == APEI_ERST_INVALID_RECORD_ID) {
+		spin_unlock_irqrestore(&erst_lock, flags);
+		return 0;
+	}
+
+	len = __erst_read(record_id, record, buflen);
+	spin_unlock_irqrestore(&erst_lock, flags);
+
+	return len;
+}
+EXPORT_SYMBOL_GPL(erst_read_next);
+
+int erst_clear(u64 record_id)
+{
+	int rc;
+	unsigned long flags;
+
+	if (erst_disable)
+		return -ENODEV;
+
+	spin_lock_irqsave(&erst_lock, flags);
+	if (erst_erange.attr & ERST_RANGE_NVRAM)
+		rc = __erst_clear_from_nvram(record_id);
+	else
+		rc = __erst_clear_from_storage(record_id);
+	spin_unlock_irqrestore(&erst_lock, flags);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(erst_clear);
+
+static int __init setup_erst_disable(char *str)
+{
+	erst_disable = 1;
+	return 0;
+}
+
+__setup("erst_disable", setup_erst_disable);
+
+static int erst_check_table(struct acpi_table_erst *erst_tab)
+{
+	if (erst_tab->header_length != sizeof(struct acpi_table_erst))
+		return -EINVAL;
+	if (erst_tab->header.length < sizeof(struct acpi_table_erst))
+		return -EINVAL;
+	if (erst_tab->entries !=
+	    (erst_tab->header.length - sizeof(struct acpi_table_erst)) /
+	    sizeof(struct acpi_erst_entry))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int __init erst_init(void)
+{
+	int rc = 0;
+	acpi_status status;
+	struct apei_exec_context ctx;
+	struct apei_resources erst_resources;
+	struct resource *r;
+
+	if (acpi_disabled)
+		goto err;
+
+	if (erst_disable) {
+		pr_info(ERST_PFX
+	"Error Record Serialization Table (ERST) support is disabled.\n");
+		goto err;
+	}
+
+	status = acpi_get_table(ACPI_SIG_ERST, 0,
+				(struct acpi_table_header **)&erst_tab);
+	if (status == AE_NOT_FOUND) {
+		pr_err(ERST_PFX "Table is not found!\n");
+		goto err;
+	} else if (ACPI_FAILURE(status)) {
+		const char *msg = acpi_format_exception(status);
+		pr_err(ERST_PFX "Failed to get table, %s\n", msg);
+		rc = -EINVAL;
+		goto err;
+	}
+
+	rc = erst_check_table(erst_tab);
+	if (rc) {
+		pr_err(FW_BUG ERST_PFX "ERST table is invalid\n");
+		goto err;
+	}
+
+	apei_resources_init(&erst_resources);
+	erst_exec_ctx_init(&ctx);
+	rc = apei_exec_collect_resources(&ctx, &erst_resources);
+	if (rc)
+		goto err_fini;
+	rc = apei_resources_request(&erst_resources, "APEI ERST");
+	if (rc)
+		goto err_fini;
+	rc = apei_exec_pre_map_gars(&ctx);
+	if (rc)
+		goto err_release;
+	rc = erst_get_erange(&erst_erange);
+	if (rc) {
+		if (rc == -ENODEV)
+			pr_info(ERST_PFX
+	"The corresponding hardware device or firmware implementation "
+	"is not available.\n");
+		else
+			pr_err(ERST_PFX
+			       "Failed to get Error Log Address Range.\n");
+		goto err_unmap_reg;
+	}
+
+	r = request_mem_region(erst_erange.base, erst_erange.size, "APEI ERST");
+	if (!r) {
+		pr_err(ERST_PFX
+		"Can not request iomem region <0x%16llx-0x%16llx> for ERST.\n",
+		(unsigned long long)erst_erange.base,
+		(unsigned long long)erst_erange.base + erst_erange.size);
+		rc = -EIO;
+		goto err_unmap_reg;
+	}
+	rc = -ENOMEM;
+	erst_erange.vaddr = ioremap_cache(erst_erange.base,
+					  erst_erange.size);
+	if (!erst_erange.vaddr)
+		goto err_release_erange;
+
+	pr_info(ERST_PFX
+	"Error Record Serialization Table (ERST) support is initialized.\n");
+
+	return 0;
+
+err_release_erange:
+	release_mem_region(erst_erange.base, erst_erange.size);
+err_unmap_reg:
+	apei_exec_post_unmap_gars(&ctx);
+err_release:
+	apei_resources_release(&erst_resources);
+err_fini:
+	apei_resources_fini(&erst_resources);
+err:
+	erst_disable = 1;
+	return rc;
+}
+
+device_initcall(erst_init);
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
new file mode 100644
index 0000000..fd0cc01
--- /dev/null
+++ b/drivers/acpi/apei/ghes.c
@@ -0,0 +1,427 @@
+/*
+ * APEI Generic Hardware Error Source support
+ *
+ * Generic Hardware Error Source provides a way to report platform
+ * hardware errors (such as that from chipset). It works in so called
+ * "Firmware First" mode, that is, hardware errors are reported to
+ * firmware firstly, then reported to Linux by firmware. This way,
+ * some non-standard hardware error registers or non-standard hardware
+ * link can be checked by firmware to produce more hardware error
+ * information for Linux.
+ *
+ * For more information about Generic Hardware Error Source, please
+ * refer to ACPI Specification version 4.0, section 17.3.2.6
+ *
+ * Now, only SCI notification type and memory errors are
+ * supported. More notification type and hardware error type will be
+ * added later.
+ *
+ * Copyright 2010 Intel Corp.
+ *   Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/cper.h>
+#include <linux/kdebug.h>
+#include <acpi/apei.h>
+#include <acpi/atomicio.h>
+#include <acpi/hed.h>
+#include <asm/mce.h>
+
+#include "apei-internal.h"
+
+#define GHES_PFX	"GHES: "
+
+#define GHES_ESTATUS_MAX_SIZE		65536
+
+/*
+ * One struct ghes is created for each generic hardware error
+ * source.
+ *
+ * It provides the context for APEI hardware error timer/IRQ/SCI/NMI
+ * handler. Handler for one generic hardware error source is only
+ * triggered after the previous one is done. So handler can uses
+ * struct ghes without locking.
+ *
+ * estatus: memory buffer for error status block, allocated during
+ * HEST parsing.
+ */
+#define GHES_TO_CLEAR		0x0001
+
+struct ghes {
+	struct acpi_hest_generic *generic;
+	struct acpi_hest_generic_status *estatus;
+	struct list_head list;
+	u64 buffer_paddr;
+	unsigned long flags;
+};
+
+/*
+ * Error source lists, one list for each notification method. The
+ * members in lists are struct ghes.
+ *
+ * The list members are only added in HEST parsing and deleted during
+ * module_exit, that is, single-threaded. So no lock is needed for
+ * that.
+ *
+ * But the mutual exclusion is needed between members adding/deleting
+ * and timer/IRQ/SCI/NMI handler, which may traverse the list. RCU is
+ * used for that.
+ */
+static LIST_HEAD(ghes_sci);
+
+static struct ghes *ghes_new(struct acpi_hest_generic *generic)
+{
+	struct ghes *ghes;
+	unsigned int error_block_length;
+	int rc;
+
+	ghes = kzalloc(sizeof(*ghes), GFP_KERNEL);
+	if (!ghes)
+		return ERR_PTR(-ENOMEM);
+	ghes->generic = generic;
+	INIT_LIST_HEAD(&ghes->list);
+	rc = acpi_pre_map_gar(&generic->error_status_address);
+	if (rc)
+		goto err_free;
+	error_block_length = generic->error_block_length;
+	if (error_block_length > GHES_ESTATUS_MAX_SIZE) {
+		pr_warning(FW_WARN GHES_PFX
+			   "Error status block length is too long: %u for "
+			   "generic hardware error source: %d.\n",
+			   error_block_length, generic->header.source_id);
+		error_block_length = GHES_ESTATUS_MAX_SIZE;
+	}
+	ghes->estatus = kmalloc(error_block_length, GFP_KERNEL);
+	if (!ghes->estatus) {
+		rc = -ENOMEM;
+		goto err_unmap;
+	}
+
+	return ghes;
+
+err_unmap:
+	acpi_post_unmap_gar(&generic->error_status_address);
+err_free:
+	kfree(ghes);
+	return ERR_PTR(rc);
+}
+
+static void ghes_fini(struct ghes *ghes)
+{
+	kfree(ghes->estatus);
+	acpi_post_unmap_gar(&ghes->generic->error_status_address);
+}
+
+enum {
+	GHES_SER_NO = 0x0,
+	GHES_SER_CORRECTED = 0x1,
+	GHES_SER_RECOVERABLE = 0x2,
+	GHES_SER_PANIC = 0x3,
+};
+
+static inline int ghes_severity(int severity)
+{
+	switch (severity) {
+	case CPER_SER_INFORMATIONAL:
+		return GHES_SER_NO;
+	case CPER_SER_CORRECTED:
+		return GHES_SER_CORRECTED;
+	case CPER_SER_RECOVERABLE:
+		return GHES_SER_RECOVERABLE;
+	case CPER_SER_FATAL:
+		return GHES_SER_PANIC;
+	default:
+		/* Unkown, go panic */
+		return GHES_SER_PANIC;
+	}
+}
+
+/* SCI handler run in work queue, so ioremap can be used here */
+static int ghes_copy_tofrom_phys(void *buffer, u64 paddr, u32 len,
+				 int from_phys)
+{
+	void *vaddr;
+
+	vaddr = ioremap_cache(paddr, len);
+	if (!vaddr)
+		return -ENOMEM;
+	if (from_phys)
+		memcpy(buffer, vaddr, len);
+	else
+		memcpy(vaddr, buffer, len);
+	iounmap(vaddr);
+
+	return 0;
+}
+
+static int ghes_read_estatus(struct ghes *ghes, int silent)
+{
+	struct acpi_hest_generic *g = ghes->generic;
+	u64 buf_paddr;
+	u32 len;
+	int rc;
+
+	rc = acpi_atomic_read(&buf_paddr, &g->error_status_address);
+	if (rc) {
+		if (!silent && printk_ratelimit())
+			pr_warning(FW_WARN GHES_PFX
+"Failed to read error status block address for hardware error source: %d.\n",
+				   g->header.source_id);
+		return -EIO;
+	}
+	if (!buf_paddr)
+		return -ENOENT;
+
+	rc = ghes_copy_tofrom_phys(ghes->estatus, buf_paddr,
+				   sizeof(*ghes->estatus), 1);
+	if (rc)
+		return rc;
+	if (!ghes->estatus->block_status)
+		return -ENOENT;
+
+	ghes->buffer_paddr = buf_paddr;
+	ghes->flags |= GHES_TO_CLEAR;
+
+	rc = -EIO;
+	len = apei_estatus_len(ghes->estatus);
+	if (len < sizeof(*ghes->estatus))
+		goto err_read_block;
+	if (len > ghes->generic->error_block_length)
+		goto err_read_block;
+	if (apei_estatus_check_header(ghes->estatus))
+		goto err_read_block;
+	rc = ghes_copy_tofrom_phys(ghes->estatus + 1,
+				   buf_paddr + sizeof(*ghes->estatus),
+				   len - sizeof(*ghes->estatus), 1);
+	if (rc)
+		return rc;
+	if (apei_estatus_check(ghes->estatus))
+		goto err_read_block;
+	rc = 0;
+
+err_read_block:
+	if (rc && !silent)
+		pr_warning(FW_WARN GHES_PFX
+			   "Failed to read error status block!\n");
+	return rc;
+}
+
+static void ghes_clear_estatus(struct ghes *ghes)
+{
+	ghes->estatus->block_status = 0;
+	if (!(ghes->flags & GHES_TO_CLEAR))
+		return;
+	ghes_copy_tofrom_phys(ghes->estatus, ghes->buffer_paddr,
+			      sizeof(ghes->estatus->block_status), 0);
+	ghes->flags &= ~GHES_TO_CLEAR;
+}
+
+static void ghes_do_proc(struct ghes *ghes)
+{
+	int ser, processed = 0;
+	struct acpi_hest_generic_data *gdata;
+
+	ser = ghes_severity(ghes->estatus->error_severity);
+	apei_estatus_for_each_section(ghes->estatus, gdata) {
+#ifdef CONFIG_X86_MCE
+		if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,
+				 CPER_SEC_PLATFORM_MEM)) {
+			apei_mce_report_mem_error(
+				ser == GHES_SER_CORRECTED,
+				(struct cper_sec_mem_err *)(gdata+1));
+			processed = 1;
+		}
+#endif
+	}
+
+	if (!processed && printk_ratelimit())
+		pr_warning(GHES_PFX
+		"Unknown error record from generic hardware error source: %d\n",
+			   ghes->generic->header.source_id);
+}
+
+static int ghes_proc(struct ghes *ghes)
+{
+	int rc;
+
+	rc = ghes_read_estatus(ghes, 0);
+	if (rc)
+		goto out;
+	ghes_do_proc(ghes);
+
+out:
+	ghes_clear_estatus(ghes);
+	return 0;
+}
+
+static int ghes_notify_sci(struct notifier_block *this,
+				  unsigned long event, void *data)
+{
+	struct ghes *ghes;
+	int ret = NOTIFY_DONE;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(ghes, &ghes_sci, list) {
+		if (!ghes_proc(ghes))
+			ret = NOTIFY_OK;
+	}
+	rcu_read_unlock();
+
+	return ret;
+}
+
+static struct notifier_block ghes_notifier_sci = {
+	.notifier_call = ghes_notify_sci,
+};
+
+static int hest_ghes_parse(struct acpi_hest_header *hest_hdr, void *data)
+{
+	struct acpi_hest_generic *generic;
+	struct ghes *ghes = NULL;
+	int rc = 0;
+
+	if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR)
+		return 0;
+
+	generic = (struct acpi_hest_generic *)hest_hdr;
+	if (!generic->enabled)
+		return 0;
+
+	if (generic->error_block_length <
+	    sizeof(struct acpi_hest_generic_status)) {
+		pr_warning(FW_BUG GHES_PFX
+"Invalid error block length: %u for generic hardware error source: %d\n",
+			   generic->error_block_length,
+			   generic->header.source_id);
+		goto err;
+	}
+	if (generic->records_to_preallocate == 0) {
+		pr_warning(FW_BUG GHES_PFX
+"Invalid records to preallocate: %u for generic hardware error source: %d\n",
+			   generic->records_to_preallocate,
+			   generic->header.source_id);
+		goto err;
+	}
+	ghes = ghes_new(generic);
+	if (IS_ERR(ghes)) {
+		rc = PTR_ERR(ghes);
+		ghes = NULL;
+		goto err;
+	}
+	switch (generic->notify.type) {
+	case ACPI_HEST_NOTIFY_POLLED:
+		pr_warning(GHES_PFX
+"Generic hardware error source: %d notified via POLL is not supported!\n",
+			   generic->header.source_id);
+		break;
+	case ACPI_HEST_NOTIFY_EXTERNAL:
+	case ACPI_HEST_NOTIFY_LOCAL:
+		pr_warning(GHES_PFX
+"Generic hardware error source: %d notified via IRQ is not supported!\n",
+			   generic->header.source_id);
+		break;
+	case ACPI_HEST_NOTIFY_SCI:
+		if (list_empty(&ghes_sci))
+			register_acpi_hed_notifier(&ghes_notifier_sci);
+		list_add_rcu(&ghes->list, &ghes_sci);
+		break;
+	case ACPI_HEST_NOTIFY_NMI:
+		pr_warning(GHES_PFX
+"Generic hardware error source: %d notified via NMI is not supported!\n",
+			   generic->header.source_id);
+		break;
+	default:
+		pr_warning(FW_WARN GHES_PFX
+	"Unknown notification type: %u for generic hardware error source: %d\n",
+			   generic->notify.type, generic->header.source_id);
+		break;
+	}
+
+	return 0;
+err:
+	if (ghes)
+		ghes_fini(ghes);
+	return rc;
+}
+
+static void ghes_cleanup(void)
+{
+	struct ghes *ghes, *nghes;
+
+	if (!list_empty(&ghes_sci))
+		unregister_acpi_hed_notifier(&ghes_notifier_sci);
+
+	synchronize_rcu();
+
+	list_for_each_entry_safe(ghes, nghes, &ghes_sci, list) {
+		list_del(&ghes->list);
+		ghes_fini(ghes);
+		kfree(ghes);
+	}
+}
+
+static int __init ghes_init(void)
+{
+	int rc;
+
+	if (acpi_disabled)
+		return -ENODEV;
+
+	if (hest_disable) {
+		pr_info(GHES_PFX "HEST is not enabled!\n");
+		return -EINVAL;
+	}
+
+	rc = apei_hest_parse(hest_ghes_parse, NULL);
+	if (rc) {
+		pr_err(GHES_PFX
+		"Error during parsing HEST generic hardware error sources.\n");
+		goto err_cleanup;
+	}
+
+	if (list_empty(&ghes_sci)) {
+		pr_info(GHES_PFX
+			"No functional generic hardware error sources.\n");
+		rc = -ENODEV;
+		goto err_cleanup;
+	}
+
+	pr_info(GHES_PFX
+		"Generic Hardware Error Source support is initialized.\n");
+
+	return 0;
+err_cleanup:
+	ghes_cleanup();
+	return rc;
+}
+
+static void __exit ghes_exit(void)
+{
+	ghes_cleanup();
+}
+
+module_init(ghes_init);
+module_exit(ghes_exit);
+
+MODULE_AUTHOR("Huang Ying");
+MODULE_DESCRIPTION("APEI Generic Hardware Error Source support");
+MODULE_LICENSE("GPL");
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
new file mode 100644
index 0000000..e7f40d3
--- /dev/null
+++ b/drivers/acpi/apei/hest.c
@@ -0,0 +1,173 @@
+/*
+ * APEI Hardware Error Souce Table support
+ *
+ * HEST describes error sources in detail; communicates operational
+ * parameters (i.e. severity levels, masking bits, and threshold
+ * values) to Linux as necessary. It also allows the BIOS to report
+ * non-standard error sources to Linux (for example, chipset-specific
+ * error registers).
+ *
+ * For more information about HEST, please refer to ACPI Specification
+ * version 4.0, section 17.3.2.
+ *
+ * Copyright 2009 Intel Corp.
+ *   Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/kdebug.h>
+#include <linux/highmem.h>
+#include <linux/io.h>
+#include <acpi/apei.h>
+
+#include "apei-internal.h"
+
+#define HEST_PFX "HEST: "
+
+int hest_disable;
+EXPORT_SYMBOL_GPL(hest_disable);
+
+/* HEST table parsing */
+
+static struct acpi_table_hest *hest_tab;
+
+static int hest_void_parse(struct acpi_hest_header *hest_hdr, void *data)
+{
+	return 0;
+}
+
+static int hest_esrc_len_tab[ACPI_HEST_TYPE_RESERVED] = {
+	[ACPI_HEST_TYPE_IA32_CHECK] = -1,	/* need further calculation */
+	[ACPI_HEST_TYPE_IA32_CORRECTED_CHECK] = -1,
+	[ACPI_HEST_TYPE_IA32_NMI] = sizeof(struct acpi_hest_ia_nmi),
+	[ACPI_HEST_TYPE_AER_ROOT_PORT] = sizeof(struct acpi_hest_aer_root),
+	[ACPI_HEST_TYPE_AER_ENDPOINT] = sizeof(struct acpi_hest_aer),
+	[ACPI_HEST_TYPE_AER_BRIDGE] = sizeof(struct acpi_hest_aer_bridge),
+	[ACPI_HEST_TYPE_GENERIC_ERROR] = sizeof(struct acpi_hest_generic),
+};
+
+static int hest_esrc_len(struct acpi_hest_header *hest_hdr)
+{
+	u16 hest_type = hest_hdr->type;
+	int len;
+
+	if (hest_type >= ACPI_HEST_TYPE_RESERVED)
+		return 0;
+
+	len = hest_esrc_len_tab[hest_type];
+
+	if (hest_type == ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) {
+		struct acpi_hest_ia_corrected *cmc;
+		cmc = (struct acpi_hest_ia_corrected *)hest_hdr;
+		len = sizeof(*cmc) + cmc->num_hardware_banks *
+			sizeof(struct acpi_hest_ia_error_bank);
+	} else if (hest_type == ACPI_HEST_TYPE_IA32_CHECK) {
+		struct acpi_hest_ia_machine_check *mc;
+		mc = (struct acpi_hest_ia_machine_check *)hest_hdr;
+		len = sizeof(*mc) + mc->num_hardware_banks *
+			sizeof(struct acpi_hest_ia_error_bank);
+	}
+	BUG_ON(len == -1);
+
+	return len;
+};
+
+int apei_hest_parse(apei_hest_func_t func, void *data)
+{
+	struct acpi_hest_header *hest_hdr;
+	int i, rc, len;
+
+	if (hest_disable)
+		return -EINVAL;
+
+	hest_hdr = (struct acpi_hest_header *)(hest_tab + 1);
+	for (i = 0; i < hest_tab->error_source_count; i++) {
+		len = hest_esrc_len(hest_hdr);
+		if (!len) {
+			pr_warning(FW_WARN HEST_PFX
+				   "Unknown or unused hardware error source "
+				   "type: %d for hardware error source: %d.\n",
+				   hest_hdr->type, hest_hdr->source_id);
+			return -EINVAL;
+		}
+		if ((void *)hest_hdr + len >
+		    (void *)hest_tab + hest_tab->header.length) {
+			pr_warning(FW_BUG HEST_PFX
+		"Table contents overflow for hardware error source: %d.\n",
+				hest_hdr->source_id);
+			return -EINVAL;
+		}
+
+		rc = func(hest_hdr, data);
+		if (rc)
+			return rc;
+
+		hest_hdr = (void *)hest_hdr + len;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(apei_hest_parse);
+
+static int __init setup_hest_disable(char *str)
+{
+	hest_disable = 1;
+	return 0;
+}
+
+__setup("hest_disable", setup_hest_disable);
+
+static int __init hest_init(void)
+{
+	acpi_status status;
+	int rc = -ENODEV;
+
+	if (acpi_disabled)
+		goto err;
+
+	if (hest_disable) {
+		pr_info(HEST_PFX "HEST tabling parsing is disabled.\n");
+		goto err;
+	}
+
+	status = acpi_get_table(ACPI_SIG_HEST, 0,
+				(struct acpi_table_header **)&hest_tab);
+	if (status == AE_NOT_FOUND) {
+		pr_info(HEST_PFX "Table is not found!\n");
+		goto err;
+	} else if (ACPI_FAILURE(status)) {
+		const char *msg = acpi_format_exception(status);
+		pr_err(HEST_PFX "Failed to get table, %s\n", msg);
+		rc = -EINVAL;
+		goto err;
+	}
+
+	rc = apei_hest_parse(hest_void_parse, NULL);
+	if (rc)
+		goto err;
+
+	pr_info(HEST_PFX "HEST table parsing is initialized.\n");
+
+	return 0;
+err:
+	hest_disable = 1;
+	return rc;
+}
+
+subsys_initcall(hest_init);
diff --git a/drivers/acpi/atomicio.c b/drivers/acpi/atomicio.c
new file mode 100644
index 0000000..814b192
--- /dev/null
+++ b/drivers/acpi/atomicio.c
@@ -0,0 +1,360 @@
+/*
+ * atomicio.c - ACPI IO memory pre-mapping/post-unmapping, then
+ * accessing in atomic context.
+ *
+ * This is used for NMI handler to access IO memory area, because
+ * ioremap/iounmap can not be used in NMI handler. The IO memory area
+ * is pre-mapped in process context and accessed in NMI handler.
+ *
+ * Copyright (C) 2009-2010, Intel Corp.
+ *	Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/io.h>
+#include <linux/kref.h>
+#include <linux/rculist.h>
+#include <linux/interrupt.h>
+#include <acpi/atomicio.h>
+
+#define ACPI_PFX "ACPI: "
+
+static LIST_HEAD(acpi_iomaps);
+/*
+ * Used for mutual exclusion between writers of acpi_iomaps list, for
+ * synchronization between readers and writer, RCU is used.
+ */
+static DEFINE_SPINLOCK(acpi_iomaps_lock);
+
+struct acpi_iomap {
+	struct list_head list;
+	void __iomem *vaddr;
+	unsigned long size;
+	phys_addr_t paddr;
+	struct kref ref;
+};
+
+/* acpi_iomaps_lock or RCU read lock must be held before calling */
+static struct acpi_iomap *__acpi_find_iomap(phys_addr_t paddr,
+					    unsigned long size)
+{
+	struct acpi_iomap *map;
+
+	list_for_each_entry_rcu(map, &acpi_iomaps, list) {
+		if (map->paddr + map->size >= paddr + size &&
+		    map->paddr <= paddr)
+			return map;
+	}
+	return NULL;
+}
+
+/*
+ * Atomic "ioremap" used by NMI handler, if the specified IO memory
+ * area is not pre-mapped, NULL will be returned.
+ *
+ * acpi_iomaps_lock or RCU read lock must be held before calling
+ */
+static void __iomem *__acpi_ioremap_fast(phys_addr_t paddr,
+					 unsigned long size)
+{
+	struct acpi_iomap *map;
+
+	map = __acpi_find_iomap(paddr, size);
+	if (map)
+		return map->vaddr + (paddr - map->paddr);
+	else
+		return NULL;
+}
+
+/* acpi_iomaps_lock must be held before calling */
+static void __iomem *__acpi_try_ioremap(phys_addr_t paddr,
+					unsigned long size)
+{
+	struct acpi_iomap *map;
+
+	map = __acpi_find_iomap(paddr, size);
+	if (map) {
+		kref_get(&map->ref);
+		return map->vaddr + (paddr - map->paddr);
+	} else
+		return NULL;
+}
+
+/*
+ * Used to pre-map the specified IO memory area. First try to find
+ * whether the area is already pre-mapped, if it is, increase the
+ * reference count (in __acpi_try_ioremap) and return; otherwise, do
+ * the real ioremap, and add the mapping into acpi_iomaps list.
+ */
+static void __iomem *acpi_pre_map(phys_addr_t paddr,
+				  unsigned long size)
+{
+	void __iomem *vaddr;
+	struct acpi_iomap *map;
+	unsigned long pg_sz, flags;
+	phys_addr_t pg_off;
+
+	spin_lock_irqsave(&acpi_iomaps_lock, flags);
+	vaddr = __acpi_try_ioremap(paddr, size);
+	spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
+	if (vaddr)
+		return vaddr;
+
+	pg_off = paddr & PAGE_MASK;
+	pg_sz = ((paddr + size + PAGE_SIZE - 1) & PAGE_MASK) - pg_off;
+	vaddr = ioremap(pg_off, pg_sz);
+	if (!vaddr)
+		return NULL;
+	map = kmalloc(sizeof(*map), GFP_KERNEL);
+	if (!map)
+		goto err_unmap;
+	INIT_LIST_HEAD(&map->list);
+	map->paddr = pg_off;
+	map->size = pg_sz;
+	map->vaddr = vaddr;
+	kref_init(&map->ref);
+
+	spin_lock_irqsave(&acpi_iomaps_lock, flags);
+	vaddr = __acpi_try_ioremap(paddr, size);
+	if (vaddr) {
+		spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
+		iounmap(map->vaddr);
+		kfree(map);
+		return vaddr;
+	}
+	list_add_tail_rcu(&map->list, &acpi_iomaps);
+	spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
+
+	return vaddr + (paddr - pg_off);
+err_unmap:
+	iounmap(vaddr);
+	return NULL;
+}
+
+/* acpi_iomaps_lock must be held before calling */
+static void __acpi_kref_del_iomap(struct kref *ref)
+{
+	struct acpi_iomap *map;
+
+	map = container_of(ref, struct acpi_iomap, ref);
+	list_del_rcu(&map->list);
+}
+
+/*
+ * Used to post-unmap the specified IO memory area. The iounmap is
+ * done only if the reference count goes zero.
+ */
+static void acpi_post_unmap(phys_addr_t paddr, unsigned long size)
+{
+	struct acpi_iomap *map;
+	unsigned long flags;
+	int del;
+
+	spin_lock_irqsave(&acpi_iomaps_lock, flags);
+	map = __acpi_find_iomap(paddr, size);
+	BUG_ON(!map);
+	del = kref_put(&map->ref, __acpi_kref_del_iomap);
+	spin_unlock_irqrestore(&acpi_iomaps_lock, flags);
+
+	if (!del)
+		return;
+
+	synchronize_rcu();
+	iounmap(map->vaddr);
+	kfree(map);
+}
+
+/* In NMI handler, should set silent = 1 */
+static int acpi_check_gar(struct acpi_generic_address *reg,
+			  u64 *paddr, int silent)
+{
+	u32 width, space_id;
+
+	width = reg->bit_width;
+	space_id = reg->space_id;
+	/* Handle possible alignment issues */
+	memcpy(paddr, &reg->address, sizeof(*paddr));
+	if (!*paddr) {
+		if (!silent)
+			pr_warning(FW_BUG ACPI_PFX
+			"Invalid physical address in GAR [0x%llx/%u/%u]\n",
+				   *paddr, width, space_id);
+		return -EINVAL;
+	}
+
+	if ((width != 8) && (width != 16) && (width != 32) && (width != 64)) {
+		if (!silent)
+			pr_warning(FW_BUG ACPI_PFX
+				   "Invalid bit width in GAR [0x%llx/%u/%u]\n",
+				   *paddr, width, space_id);
+		return -EINVAL;
+	}
+
+	if (space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY &&
+	    space_id != ACPI_ADR_SPACE_SYSTEM_IO) {
+		if (!silent)
+			pr_warning(FW_BUG ACPI_PFX
+			"Invalid address space type in GAR [0x%llx/%u/%u]\n",
+				   *paddr, width, space_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Pre-map, working on GAR */
+int acpi_pre_map_gar(struct acpi_generic_address *reg)
+{
+	u64 paddr;
+	void __iomem *vaddr;
+	int rc;
+
+	if (reg->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+		return 0;
+
+	rc = acpi_check_gar(reg, &paddr, 0);
+	if (rc)
+		return rc;
+
+	vaddr = acpi_pre_map(paddr, reg->bit_width / 8);
+	if (!vaddr)
+		return -EIO;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_pre_map_gar);
+
+/* Post-unmap, working on GAR */
+int acpi_post_unmap_gar(struct acpi_generic_address *reg)
+{
+	u64 paddr;
+	int rc;
+
+	if (reg->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+		return 0;
+
+	rc = acpi_check_gar(reg, &paddr, 0);
+	if (rc)
+		return rc;
+
+	acpi_post_unmap(paddr, reg->bit_width / 8);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_post_unmap_gar);
+
+/*
+ * Can be used in atomic (including NMI) or process context. RCU read
+ * lock can only be released after the IO memory area accessing.
+ */
+static int acpi_atomic_read_mem(u64 paddr, u64 *val, u32 width)
+{
+	void __iomem *addr;
+
+	rcu_read_lock();
+	addr = __acpi_ioremap_fast(paddr, width);
+	switch (width) {
+	case 8:
+		*val = readb(addr);
+		break;
+	case 16:
+		*val = readw(addr);
+		break;
+	case 32:
+		*val = readl(addr);
+		break;
+	case 64:
+		*val = readq(addr);
+		break;
+	default:
+		return -EINVAL;
+	}
+	rcu_read_unlock();
+
+	return 0;
+}
+
+static int acpi_atomic_write_mem(u64 paddr, u64 val, u32 width)
+{
+	void __iomem *addr;
+
+	rcu_read_lock();
+	addr = __acpi_ioremap_fast(paddr, width);
+	switch (width) {
+	case 8:
+		writeb(val, addr);
+		break;
+	case 16:
+		writew(val, addr);
+		break;
+	case 32:
+		writel(val, addr);
+		break;
+	case 64:
+		writeq(val, addr);
+		break;
+	default:
+		return -EINVAL;
+	}
+	rcu_read_unlock();
+
+	return 0;
+}
+
+/* GAR accessing in atomic (including NMI) or process context */
+int acpi_atomic_read(u64 *val, struct acpi_generic_address *reg)
+{
+	u64 paddr;
+	int rc;
+
+	rc = acpi_check_gar(reg, &paddr, 1);
+	if (rc)
+		return rc;
+
+	*val = 0;
+	switch (reg->space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+		return acpi_atomic_read_mem(paddr, val, reg->bit_width);
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		return acpi_os_read_port(paddr, (u32 *)val, reg->bit_width);
+	default:
+		return -EINVAL;
+	}
+}
+EXPORT_SYMBOL_GPL(acpi_atomic_read);
+
+int acpi_atomic_write(u64 val, struct acpi_generic_address *reg)
+{
+	u64 paddr;
+	int rc;
+
+	rc = acpi_check_gar(reg, &paddr, 1);
+	if (rc)
+		return rc;
+
+	switch (reg->space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+		return acpi_atomic_write_mem(paddr, val, reg->bit_width);
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		return acpi_os_write_port(paddr, val, reg->bit_width);
+	default:
+		return -EINVAL;
+	}
+}
+EXPORT_SYMBOL_GPL(acpi_atomic_write);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index f2234db..e61d4f8 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1027,10 +1027,9 @@
 		/* Don't trust ECDT, which comes from ASUSTek */
 		if (!EC_FLAGS_VALIDATE_ECDT)
 			goto install;
-		saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+		saved_ec = kmemdup(boot_ec, sizeof(struct acpi_ec), GFP_KERNEL);
 		if (!saved_ec)
 			return -ENOMEM;
-		memcpy(saved_ec, boot_ec, sizeof(struct acpi_ec));
 	/* fall through */
 	}
 
diff --git a/drivers/acpi/hed.c b/drivers/acpi/hed.c
new file mode 100644
index 0000000..d0c1967
--- /dev/null
+++ b/drivers/acpi/hed.c
@@ -0,0 +1,112 @@
+/*
+ * ACPI Hardware Error Device (PNP0C33) Driver
+ *
+ * Copyright (C) 2010, Intel Corp.
+ *	Author: Huang Ying <ying.huang@intel.com>
+ *
+ * ACPI Hardware Error Device is used to report some hardware errors
+ * notified via SCI, mainly the corrected errors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+#include <acpi/hed.h>
+
+static struct acpi_device_id acpi_hed_ids[] = {
+	{"PNP0C33", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, acpi_hed_ids);
+
+static acpi_handle hed_handle;
+
+static BLOCKING_NOTIFIER_HEAD(acpi_hed_notify_list);
+
+int register_acpi_hed_notifier(struct notifier_block *nb)
+{
+	return blocking_notifier_chain_register(&acpi_hed_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(register_acpi_hed_notifier);
+
+void unregister_acpi_hed_notifier(struct notifier_block *nb)
+{
+	blocking_notifier_chain_unregister(&acpi_hed_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_acpi_hed_notifier);
+
+/*
+ * SCI to report hardware error is forwarded to the listeners of HED,
+ * it is used by HEST Generic Hardware Error Source with notify type
+ * SCI.
+ */
+static void acpi_hed_notify(struct acpi_device *device, u32 event)
+{
+	blocking_notifier_call_chain(&acpi_hed_notify_list, 0, NULL);
+}
+
+static int __devinit acpi_hed_add(struct acpi_device *device)
+{
+	/* Only one hardware error device */
+	if (hed_handle)
+		return -EINVAL;
+	hed_handle = device->handle;
+	return 0;
+}
+
+static int __devexit acpi_hed_remove(struct acpi_device *device, int type)
+{
+	hed_handle = NULL;
+	return 0;
+}
+
+static struct acpi_driver acpi_hed_driver = {
+	.name = "hardware_error_device",
+	.class = "hardware_error",
+	.ids = acpi_hed_ids,
+	.ops = {
+		.add = acpi_hed_add,
+		.remove = acpi_hed_remove,
+		.notify = acpi_hed_notify,
+	},
+};
+
+static int __init acpi_hed_init(void)
+{
+	if (acpi_disabled)
+		return -ENODEV;
+
+	if (acpi_bus_register_driver(&acpi_hed_driver) < 0)
+		return -ENODEV;
+
+	return 0;
+}
+
+static void __exit acpi_hed_exit(void)
+{
+	acpi_bus_unregister_driver(&acpi_hed_driver);
+}
+
+module_init(acpi_hed_init);
+module_exit(acpi_hed_exit);
+
+ACPI_MODULE_NAME("hed");
+MODULE_AUTHOR("Huang Ying");
+MODULE_DESCRIPTION("ACPI Hardware Error Device Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/acpi/hest.c b/drivers/acpi/hest.c
deleted file mode 100644
index 1c527a1..0000000
--- a/drivers/acpi/hest.c
+++ /dev/null
@@ -1,139 +0,0 @@
-#include <linux/acpi.h>
-#include <linux/pci.h>
-
-#define PREFIX "ACPI: "
-
-static inline unsigned long parse_acpi_hest_ia_machine_check(struct acpi_hest_ia_machine_check *p)
-{
-	return sizeof(*p) +
-		(sizeof(struct acpi_hest_ia_error_bank) * p->num_hardware_banks);
-}
-
-static inline unsigned long parse_acpi_hest_ia_corrected(struct acpi_hest_ia_corrected *p)
-{
-	return sizeof(*p) +
-		(sizeof(struct acpi_hest_ia_error_bank) * p->num_hardware_banks);
-}
-
-static inline unsigned long parse_acpi_hest_ia_nmi(struct acpi_hest_ia_nmi *p)
-{
-	return sizeof(*p);
-}
-
-static inline unsigned long parse_acpi_hest_generic(struct acpi_hest_generic *p)
-{
-	return sizeof(*p);
-}
-
-static inline unsigned int hest_match_pci(struct acpi_hest_aer_common *p, struct pci_dev *pci)
-{
-	return	(0           == pci_domain_nr(pci->bus) &&
-		 p->bus      == pci->bus->number &&
-		 p->device   == PCI_SLOT(pci->devfn) &&
-		 p->function == PCI_FUNC(pci->devfn));
-}
-
-static unsigned long parse_acpi_hest_aer(void *hdr, int type, struct pci_dev *pci, int *firmware_first)
-{
-	struct acpi_hest_aer_common *p = hdr + sizeof(struct acpi_hest_header);
-	unsigned long rc=0;
-	u8 pcie_type = 0;
-	u8 bridge = 0;
-	switch (type) {
-	case ACPI_HEST_TYPE_AER_ROOT_PORT:
-		rc = sizeof(struct acpi_hest_aer_root);
-		pcie_type = PCI_EXP_TYPE_ROOT_PORT;
-		break;
-	case ACPI_HEST_TYPE_AER_ENDPOINT:
-		rc = sizeof(struct acpi_hest_aer);
-		pcie_type = PCI_EXP_TYPE_ENDPOINT;
-		break;
-	case ACPI_HEST_TYPE_AER_BRIDGE:
-		rc = sizeof(struct acpi_hest_aer_bridge);
-		if ((pci->class >> 16) == PCI_BASE_CLASS_BRIDGE)
-			bridge = 1;
-		break;
-	}
-
-	if (p->flags & ACPI_HEST_GLOBAL) {
-		if ((pci->is_pcie && (pci->pcie_type == pcie_type)) || bridge)
-			*firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
-	}
-	else
-		if (hest_match_pci(p, pci))
-			*firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
-	return rc;
-}
-
-static int acpi_hest_firmware_first(struct acpi_table_header *stdheader, struct pci_dev *pci)
-{
-	struct acpi_table_hest *hest = (struct acpi_table_hest *)stdheader;
-	void *p = (void *)hest + sizeof(*hest); /* defined by the ACPI 4.0 spec */
-	struct acpi_hest_header *hdr = p;
-
-	int i;
-	int firmware_first = 0;
-	static unsigned char printed_unused = 0;
-	static unsigned char printed_reserved = 0;
-
-	for (i=0, hdr=p; p < (((void *)hest) + hest->header.length) && i < hest->error_source_count; i++) {
-		switch (hdr->type) {
-		case ACPI_HEST_TYPE_IA32_CHECK:
-			p += parse_acpi_hest_ia_machine_check(p);
-			break;
-		case ACPI_HEST_TYPE_IA32_CORRECTED_CHECK:
-			p += parse_acpi_hest_ia_corrected(p);
-			break;
-		case ACPI_HEST_TYPE_IA32_NMI:
-			p += parse_acpi_hest_ia_nmi(p);
-			break;
-		/* These three should never appear */
-		case ACPI_HEST_TYPE_NOT_USED3:
-		case ACPI_HEST_TYPE_NOT_USED4:
-		case ACPI_HEST_TYPE_NOT_USED5:
-			if (!printed_unused) {
-				printk(KERN_DEBUG PREFIX
-				       "HEST Error Source list contains an obsolete type (%d).\n", hdr->type);
-				printed_unused = 1;
-			}
-			break;
-		case ACPI_HEST_TYPE_AER_ROOT_PORT:
-		case ACPI_HEST_TYPE_AER_ENDPOINT:
-		case ACPI_HEST_TYPE_AER_BRIDGE:
-			p += parse_acpi_hest_aer(p, hdr->type, pci, &firmware_first);
-			break;
-		case ACPI_HEST_TYPE_GENERIC_ERROR:
-			p += parse_acpi_hest_generic(p);
-			break;
-		/* These should never appear either */
-		case ACPI_HEST_TYPE_RESERVED:
-		default:
-			if (!printed_reserved) {
-				printk(KERN_DEBUG PREFIX
-				       "HEST Error Source list contains a reserved type (%d).\n", hdr->type);
-				printed_reserved = 1;
-			}
-			break;
-		}
-	}
-	return firmware_first;
-}
-
-int acpi_hest_firmware_first_pci(struct pci_dev *pci)
-{
-	acpi_status status = AE_NOT_FOUND;
-	struct acpi_table_header *hest = NULL;
-
-	if (acpi_disabled)
-		return 0;
-
-	status = acpi_get_table(ACPI_SIG_HEST, 1, &hest);
-
-	if (ACPI_SUCCESS(status)) {
-		if (acpi_hest_firmware_first(hest, pci)) {
-			return 1;
-		}
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_hest_firmware_first_pci);
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 4bc1c41..78418ce 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1207,6 +1207,15 @@
 EXPORT_SYMBOL(acpi_check_mem_region);
 
 /*
+ * Let drivers know whether the resource checks are effective
+ */
+int acpi_resources_are_enforced(void)
+{
+	return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT;
+}
+EXPORT_SYMBOL(acpi_resources_are_enforced);
+
+/*
  * Acquire a spinlock.
  *
  * handle is a pointer to the spinlock_t.
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index aefce33..4eac593 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -120,7 +120,8 @@
 	struct acpi_pci_root *root;
 	
 	list_for_each_entry(root, &acpi_pci_roots, node)
-		if ((root->segment == (u16) seg) && (root->bus_nr == (u16) bus))
+		if ((root->segment == (u16) seg) &&
+		    (root->secondary.start == (u16) bus))
 			return root->device->handle;
 	return NULL;		
 }
@@ -154,7 +155,7 @@
 static acpi_status
 get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
 {
-	int *busnr = data;
+	struct resource *res = data;
 	struct acpi_resource_address64 address;
 
 	if (resource->type != ACPI_RESOURCE_TYPE_ADDRESS16 &&
@@ -164,28 +165,27 @@
 
 	acpi_resource_to_address64(resource, &address);
 	if ((address.address_length > 0) &&
-	    (address.resource_type == ACPI_BUS_NUMBER_RANGE))
-		*busnr = address.minimum;
+	    (address.resource_type == ACPI_BUS_NUMBER_RANGE)) {
+		res->start = address.minimum;
+		res->end = address.minimum + address.address_length - 1;
+	}
 
 	return AE_OK;
 }
 
 static acpi_status try_get_root_bridge_busnr(acpi_handle handle,
-					     unsigned long long *bus)
+					     struct resource *res)
 {
 	acpi_status status;
-	int busnum;
 
-	busnum = -1;
+	res->start = -1;
 	status =
 	    acpi_walk_resources(handle, METHOD_NAME__CRS,
-				get_root_bridge_busnr_callback, &busnum);
+				get_root_bridge_busnr_callback, res);
 	if (ACPI_FAILURE(status))
 		return status;
-	/* Check if we really get a bus number from _CRS */
-	if (busnum == -1)
+	if (res->start == -1)
 		return AE_ERROR;
-	*bus = busnum;
 	return AE_OK;
 }
 
@@ -429,34 +429,47 @@
 	struct acpi_device *child;
 	u32 flags, base_flags;
 
+	root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
+	if (!root)
+		return -ENOMEM;
+
 	segment = 0;
 	status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL,
 				       &segment);
 	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
 		printk(KERN_ERR PREFIX "can't evaluate _SEG\n");
-		return -ENODEV;
+		result = -ENODEV;
+		goto end;
 	}
 
 	/* Check _CRS first, then _BBN.  If no _BBN, default to zero. */
-	bus = 0;
-	status = try_get_root_bridge_busnr(device->handle, &bus);
+	root->secondary.flags = IORESOURCE_BUS;
+	status = try_get_root_bridge_busnr(device->handle, &root->secondary);
 	if (ACPI_FAILURE(status)) {
+		/*
+		 * We need both the start and end of the downstream bus range
+		 * to interpret _CBA (MMCONFIG base address), so it really is
+		 * supposed to be in _CRS.  If we don't find it there, all we
+		 * can do is assume [_BBN-0xFF] or [0-0xFF].
+		 */
+		root->secondary.end = 0xFF;
+		printk(KERN_WARNING FW_BUG PREFIX
+		       "no secondary bus range in _CRS\n");
 		status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN,					       NULL, &bus);
-		if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-			printk(KERN_ERR PREFIX
-			     "no bus number in _CRS and can't evaluate _BBN\n");
-			return -ENODEV;
+		if (ACPI_SUCCESS(status))
+			root->secondary.start = bus;
+		else if (status == AE_NOT_FOUND)
+			root->secondary.start = 0;
+		else {
+			printk(KERN_ERR PREFIX "can't evaluate _BBN\n");
+			result = -ENODEV;
+			goto end;
 		}
 	}
 
-	root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
-	if (!root)
-		return -ENOMEM;
-
 	INIT_LIST_HEAD(&root->node);
 	root->device = device;
 	root->segment = segment & 0xFFFF;
-	root->bus_nr = bus & 0xFF;
 	strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
 	strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
 	device->driver_data = root;
@@ -475,9 +488,9 @@
 	/* TBD: Locking */
 	list_add_tail(&root->node, &acpi_pci_roots);
 
-	printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n",
+	printk(KERN_INFO PREFIX "%s [%s] (domain %04x %pR)\n",
 	       acpi_device_name(device), acpi_device_bid(device),
-	       root->segment, root->bus_nr);
+	       root->segment, &root->secondary);
 
 	/*
 	 * Scan the Root Bridge
@@ -486,11 +499,11 @@
 	 * PCI namespace does not get created until this call is made (and 
 	 * thus the root bridge's pci_dev does not exist).
 	 */
-	root->bus = pci_acpi_scan_root(device, segment, bus);
+	root->bus = pci_acpi_scan_root(root);
 	if (!root->bus) {
 		printk(KERN_ERR PREFIX
 			    "Bus %04x:%02x not present in PCI namespace\n",
-			    root->segment, root->bus_nr);
+			    root->segment, (unsigned int)root->secondary.start);
 		result = -ENODEV;
 		goto end;
 	}
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 5675d97..b1034a9 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -616,7 +616,8 @@
 	acpi_processor_get_limit_info(pr);
 
 
-	acpi_processor_power_init(pr, device);
+	if (cpuidle_get_driver() == &acpi_idle_driver)
+		acpi_processor_power_init(pr, device);
 
 	pr->cdev = thermal_cooling_device_register("Processor", device,
 						&processor_cooling_ops);
@@ -920,9 +921,14 @@
 	if (!acpi_processor_dir)
 		return -ENOMEM;
 #endif
-	result = cpuidle_register_driver(&acpi_idle_driver);
-	if (result < 0)
-		goto out_proc;
+
+	if (!cpuidle_register_driver(&acpi_idle_driver)) {
+		printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n",
+			acpi_idle_driver.name);
+	} else {
+		printk(KERN_DEBUG "ACPI: acpi_idle yielding to %s",
+			cpuidle_get_driver()->name);
+	}
 
 	result = acpi_bus_register_driver(&acpi_processor_driver);
 	if (result < 0)
@@ -941,7 +947,6 @@
 out_cpuidle:
 	cpuidle_unregister_driver(&acpi_idle_driver);
 
-out_proc:
 #ifdef CONFIG_ACPI_PROCFS
 	remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
 #endif
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index c3817e1..2e8c27d 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -727,19 +727,9 @@
 			break;
 		}
 
-		if (pr->power.states[i].promotion.state)
-			seq_printf(seq, "promotion[C%zd] ",
-				   (pr->power.states[i].promotion.state -
-				    pr->power.states));
-		else
-			seq_puts(seq, "promotion[--] ");
+		seq_puts(seq, "promotion[--] ");
 
-		if (pr->power.states[i].demotion.state)
-			seq_printf(seq, "demotion[C%zd] ",
-				   (pr->power.states[i].demotion.state -
-				    pr->power.states));
-		else
-			seq_puts(seq, "demotion[--] ");
+		seq_puts(seq, "demotion[--] ");
 
 		seq_printf(seq, "latency[%03d] usage[%08d] duration[%020llu]\n",
 			   pr->power.states[i].latency,
@@ -869,6 +859,7 @@
 	struct acpi_processor *pr;
 	struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
 	ktime_t  kt1, kt2;
+	s64 idle_time_ns;
 	s64 idle_time;
 	s64 sleep_ticks = 0;
 
@@ -881,6 +872,7 @@
 		return(acpi_idle_enter_c1(dev, state));
 
 	local_irq_disable();
+
 	if (cx->entry_method != ACPI_CSTATE_FFH) {
 		current_thread_info()->status &= ~TS_POLLING;
 		/*
@@ -888,12 +880,12 @@
 		 * NEED_RESCHED:
 		 */
 		smp_mb();
-	}
 
-	if (unlikely(need_resched())) {
-		current_thread_info()->status |= TS_POLLING;
-		local_irq_enable();
-		return 0;
+		if (unlikely(need_resched())) {
+			current_thread_info()->status |= TS_POLLING;
+			local_irq_enable();
+			return 0;
+		}
 	}
 
 	/*
@@ -910,15 +902,18 @@
 	sched_clock_idle_sleep_event();
 	acpi_idle_do_entry(cx);
 	kt2 = ktime_get_real();
-	idle_time =  ktime_to_us(ktime_sub(kt2, kt1));
+	idle_time_ns = ktime_to_ns(ktime_sub(kt2, kt1));
+	idle_time = idle_time_ns;
+	do_div(idle_time, NSEC_PER_USEC);
 
 	sleep_ticks = us_to_pm_timer_ticks(idle_time);
 
 	/* Tell the scheduler how much we idled: */
-	sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
+	sched_clock_idle_wakeup_event(idle_time_ns);
 
 	local_irq_enable();
-	current_thread_info()->status |= TS_POLLING;
+	if (cx->entry_method != ACPI_CSTATE_FFH)
+		current_thread_info()->status |= TS_POLLING;
 
 	cx->usage++;
 
@@ -943,6 +938,7 @@
 	struct acpi_processor *pr;
 	struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
 	ktime_t  kt1, kt2;
+	s64 idle_time_ns;
 	s64 idle_time;
 	s64 sleep_ticks = 0;
 
@@ -968,6 +964,7 @@
 	}
 
 	local_irq_disable();
+
 	if (cx->entry_method != ACPI_CSTATE_FFH) {
 		current_thread_info()->status &= ~TS_POLLING;
 		/*
@@ -975,12 +972,12 @@
 		 * NEED_RESCHED:
 		 */
 		smp_mb();
-	}
 
-	if (unlikely(need_resched())) {
-		current_thread_info()->status |= TS_POLLING;
-		local_irq_enable();
-		return 0;
+		if (unlikely(need_resched())) {
+			current_thread_info()->status |= TS_POLLING;
+			local_irq_enable();
+			return 0;
+		}
 	}
 
 	acpi_unlazy_tlb(smp_processor_id());
@@ -1025,14 +1022,17 @@
 		spin_unlock(&c3_lock);
 	}
 	kt2 = ktime_get_real();
-	idle_time =  ktime_to_us(ktime_sub(kt2, kt1));
+	idle_time_ns = ktime_to_us(ktime_sub(kt2, kt1));
+	idle_time = idle_time_ns;
+	do_div(idle_time, NSEC_PER_USEC);
 
 	sleep_ticks = us_to_pm_timer_ticks(idle_time);
 	/* Tell the scheduler how much we idled: */
-	sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
+	sched_clock_idle_wakeup_event(idle_time_ns);
 
 	local_irq_enable();
-	current_thread_info()->status |= TS_POLLING;
+	if (cx->entry_method != ACPI_CSTATE_FFH)
+		current_thread_info()->status |= TS_POLLING;
 
 	cx->usage++;
 
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index baa76bb..4ab2275 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -80,22 +80,6 @@
 
 #ifdef CONFIG_ACPI_SLEEP
 static u32 acpi_target_sleep_state = ACPI_STATE_S0;
-/*
- * According to the ACPI specification the BIOS should make sure that ACPI is
- * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states.  Still,
- * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
- * on such systems during resume.  Unfortunately that doesn't help in
- * particularly pathological cases in which SCI_EN has to be set directly on
- * resume, although the specification states very clearly that this flag is
- * owned by the hardware.  The set_sci_en_on_resume variable will be set in such
- * cases.
- */
-static bool set_sci_en_on_resume;
-
-void __init acpi_set_sci_en_on_resume(void)
-{
-	set_sci_en_on_resume = true;
-}
 
 /*
  * ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
@@ -253,11 +237,8 @@
 		break;
 	}
 
-	/* If ACPI is not enabled by the BIOS, we need to enable it here. */
-	if (set_sci_en_on_resume)
-		acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
-	else
-		acpi_enable();
+	/* This violates the spec but is required for bug compatibility. */
+	acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
 
 	/* Reprogram control registers and execute _BFS */
 	acpi_leave_sleep_state_prep(acpi_state);
@@ -346,12 +327,6 @@
 	return 0;
 }
 
-static int __init init_set_sci_en_on_resume(const struct dmi_system_id *d)
-{
-	set_sci_en_on_resume = true;
-	return 0;
-}
-
 static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
 	{
 	.callback = init_old_suspend_ordering,
@@ -370,22 +345,6 @@
 		},
 	},
 	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Apple MacBook 1,1",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
-		DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Apple MacMini 1,1",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
-		},
-	},
-	{
 	.callback = init_old_suspend_ordering,
 	.ident = "Asus Pundit P1-AH2 (M2N8L motherboard)",
 	.matches = {
@@ -394,94 +353,6 @@
 		},
 	},
 	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Toshiba Satellite L300",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Satellite L300"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Hewlett-Packard HP G7000 Notebook PC",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP G7000 Notebook PC"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Hewlett-Packard HP Pavilion dv3 Notebook PC",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv3 Notebook PC"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Hewlett-Packard Pavilion dv4",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Hewlett-Packard Pavilion dv7",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Hewlett-Packard Compaq Presario C700 Notebook PC",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario C700 Notebook PC"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Hewlett-Packard Compaq Presario CQ40 Notebook PC",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario CQ40 Notebook PC"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Lenovo ThinkPad T410",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T410"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Lenovo ThinkPad T510",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T510"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Lenovo ThinkPad W510",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W510"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Lenovo ThinkPad X201[s]",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X201"),
-		},
-	},
-	{
 	.callback = init_old_suspend_ordering,
 	.ident = "Panasonic CF51-2L",
 	.matches = {
@@ -490,30 +361,6 @@
 		DMI_MATCH(DMI_BOARD_NAME, "CF51-2L"),
 		},
 	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Dell Studio 1558",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1558"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Dell Studio 1557",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1557"),
-		},
-	},
-	{
-	.callback = init_set_sci_en_on_resume,
-	.ident = "Dell Studio 1555",
-	.matches = {
-		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-		DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1555"),
-		},
-	},
 	{},
 };
 #endif /* CONFIG_SUSPEND */
diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h
index 8a8f3b3..25b8bd1 100644
--- a/drivers/acpi/sleep.h
+++ b/drivers/acpi/sleep.h
@@ -1,6 +1,6 @@
 
 extern u8 sleep_states[];
-extern int acpi_suspend (u32 state);
+extern int acpi_suspend(u32 state);
 
 extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
 extern void acpi_enable_wakeup_device(u8 sleep_state);
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 8a0ed28..f336bca7 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -213,7 +213,7 @@
 	unsigned long table_end;
 	acpi_size tbl_size;
 
-	if (acpi_disabled && !acpi_ht)
+	if (acpi_disabled)
 		return -ENODEV;
 
 	if (!handler)
@@ -280,7 +280,7 @@
 	struct acpi_table_header *table = NULL;
 	acpi_size tbl_size;
 
-	if (acpi_disabled && !acpi_ht)
+	if (acpi_disabled)
 		return -ENODEV;
 
 	if (!handler)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a0c93b3..9865d46 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -45,6 +45,7 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <linux/suspend.h>
+#include <acpi/video.h>
 
 #define PREFIX "ACPI: "
 
@@ -65,11 +66,6 @@
 
 #define MAX_NAME_LEN	20
 
-#define ACPI_VIDEO_DISPLAY_CRT	1
-#define ACPI_VIDEO_DISPLAY_TV	2
-#define ACPI_VIDEO_DISPLAY_DVI	3
-#define ACPI_VIDEO_DISPLAY_LCD	4
-
 #define _COMPONENT		ACPI_VIDEO_COMPONENT
 ACPI_MODULE_NAME("video");
 
@@ -1007,11 +1003,11 @@
 		result = acpi_video_init_brightness(device);
 		if (result)
 			return;
-		name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
+		name = kasprintf(GFP_KERNEL, "acpi_video%d", count);
 		if (!name)
 			return;
+		count++;
 
-		sprintf(name, "acpi_video%d", count++);
 		memset(&props, 0, sizeof(struct backlight_properties));
 		props.max_brightness = device->brightness->count - 3;
 		device->backlight = backlight_device_register(name, NULL, device,
@@ -1067,10 +1063,10 @@
 		if (device->cap._DCS && device->cap._DSS) {
 			static int count;
 			char *name;
-			name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
+			name = kasprintf(GFP_KERNEL, "acpi_video%d", count);
 			if (!name)
 				return;
-			sprintf(name, "acpi_video%d", count++);
+			count++;
 			device->output_dev = video_output_register(name,
 					NULL, device, &acpi_output_properties);
 			kfree(name);
@@ -1748,11 +1744,27 @@
 }
 
 static int
+acpi_video_get_device_type(struct acpi_video_bus *video,
+			   unsigned long device_id)
+{
+	struct acpi_video_enumerated_device *ids;
+	int i;
+
+	for (i = 0; i < video->attached_count; i++) {
+		ids = &video->attached_array[i];
+		if ((ids->value.int_val & 0xffff) == device_id)
+			return ids->value.int_val;
+	}
+
+	return 0;
+}
+
+static int
 acpi_video_bus_get_one_device(struct acpi_device *device,
 			      struct acpi_video_bus *video)
 {
 	unsigned long long device_id;
-	int status;
+	int status, device_type;
 	struct acpi_video_device *data;
 	struct acpi_video_device_attrib* attribute;
 
@@ -1797,8 +1809,25 @@
 			}
 			if(attribute->bios_can_detect)
 				data->flags.bios = 1;
-		} else
-			data->flags.unknown = 1;
+		} else {
+			/* Check for legacy IDs */
+			device_type = acpi_video_get_device_type(video,
+								 device_id);
+			/* Ignore bits 16 and 18-20 */
+			switch (device_type & 0xffe2ffff) {
+			case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR:
+				data->flags.crt = 1;
+				break;
+			case ACPI_VIDEO_DISPLAY_LEGACY_PANEL:
+				data->flags.lcd = 1;
+				break;
+			case ACPI_VIDEO_DISPLAY_LEGACY_TV:
+				data->flags.tvout = 1;
+				break;
+			default:
+				data->flags.unknown = 1;
+			}
+		}
 
 		acpi_video_device_bind(video, data);
 		acpi_video_device_find_cap(data);
@@ -2032,6 +2061,71 @@
 	return result;
 }
 
+int acpi_video_get_edid(struct acpi_device *device, int type, int device_id,
+			void **edid)
+{
+	struct acpi_video_bus *video;
+	struct acpi_video_device *video_device;
+	union acpi_object *buffer = NULL;
+	acpi_status status;
+	int i, length;
+
+	if (!device || !acpi_driver_data(device))
+		return -EINVAL;
+
+	video = acpi_driver_data(device);
+
+	for (i = 0; i < video->attached_count; i++) {
+		video_device = video->attached_array[i].bind_info;
+		length = 256;
+
+		if (!video_device)
+			continue;
+
+		if (type) {
+			switch (type) {
+			case ACPI_VIDEO_DISPLAY_CRT:
+				if (!video_device->flags.crt)
+					continue;
+				break;
+			case ACPI_VIDEO_DISPLAY_TV:
+				if (!video_device->flags.tvout)
+					continue;
+				break;
+			case ACPI_VIDEO_DISPLAY_DVI:
+				if (!video_device->flags.dvi)
+					continue;
+				break;
+			case ACPI_VIDEO_DISPLAY_LCD:
+				if (!video_device->flags.lcd)
+					continue;
+				break;
+			}
+		} else if (video_device->device_id != device_id) {
+			continue;
+		}
+
+		status = acpi_video_device_EDID(video_device, &buffer, length);
+
+		if (ACPI_FAILURE(status) || !buffer ||
+		    buffer->type != ACPI_TYPE_BUFFER) {
+			length = 128;
+			status = acpi_video_device_EDID(video_device, &buffer,
+							length);
+			if (ACPI_FAILURE(status) || !buffer ||
+			    buffer->type != ACPI_TYPE_BUFFER) {
+				continue;
+			}
+		}
+
+		*edid = buffer->buffer.pointer;
+		return length;
+	}
+
+	return -ENODEV;
+}
+EXPORT_SYMBOL(acpi_video_get_edid);
+
 static int
 acpi_video_bus_get_devices(struct acpi_video_bus *video,
 			   struct acpi_device *device)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index fc2f26b..c5fef01 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -250,7 +250,7 @@
 				ACPI_VIDEO_BACKLIGHT_FORCE_VENDOR;
 		if (!strcmp("video", str))
 			acpi_video_support |=
-				ACPI_VIDEO_OUTPUT_SWITCHING_FORCE_VIDEO;
+				ACPI_VIDEO_BACKLIGHT_FORCE_VIDEO;
 	}
 	return 1;
 }
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index e68541f..73f8833 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -57,6 +57,8 @@
 	  This option adds support for SATA Port Multipliers
 	  (the SATA version of an ethernet hub, or SAS expander).
 
+comment "Controllers with non-SFF native interface"
+
 config SATA_AHCI
 	tristate "AHCI SATA support"
 	depends on PCI
@@ -73,11 +75,12 @@
 
 	  If unsure, say N.
 
-config SATA_SIL24
-	tristate "Silicon Image 3124/3132 SATA support"
-	depends on PCI
+config SATA_FSL
+	tristate "Freescale 3.0Gbps SATA support"
+	depends on FSL_SOC
 	help
-	  This option enables support for Silicon Image 3124/3132 Serial ATA.
+	  This option enables support for Freescale 3.0Gbps SATA controller.
+	  It can be found on MPC837x and MPC8315.
 
 	  If unsure, say N.
 
@@ -87,12 +90,11 @@
 	help
 	  This option enables support for Initio 162x Serial ATA.
 
-config SATA_FSL
-	tristate "Freescale 3.0Gbps SATA support"
-	depends on FSL_SOC
+config SATA_SIL24
+	tristate "Silicon Image 3124/3132 SATA support"
+	depends on PCI
 	help
-	  This option enables support for Freescale 3.0Gbps SATA controller.
-	  It can be found on MPC837x and MPC8315.
+	  This option enables support for Silicon Image 3124/3132 Serial ATA.
 
 	  If unsure, say N.
 
@@ -116,15 +118,65 @@
 
 if ATA_SFF
 
-config SATA_SVW
-	tristate "ServerWorks Frodo / Apple K2 SATA support"
+comment "SFF controllers with custom DMA interface"
+
+config PDC_ADMA
+	tristate "Pacific Digital ADMA support"
 	depends on PCI
 	help
-	  This option enables support for Broadcom/Serverworks/Apple K2
-	  SATA support.
+	  This option enables support for Pacific Digital ADMA controllers
 
 	  If unsure, say N.
 
+config PATA_MPC52xx
+	tristate "Freescale MPC52xx SoC internal IDE"
+	depends on PPC_MPC52xx && PPC_BESTCOMM
+	select PPC_BESTCOMM_ATA
+	help
+	  This option enables support for integrated IDE controller
+	  of the Freescale MPC52xx SoC.
+
+	  If unsure, say N.
+
+config PATA_OCTEON_CF
+	tristate "OCTEON Boot Bus Compact Flash support"
+	depends on CPU_CAVIUM_OCTEON
+	help
+	  This option enables a polled compact flash driver for use with
+	  compact flash cards attached to the OCTEON boot bus.
+
+	  If unsure, say N.
+
+config SATA_QSTOR
+	tristate "Pacific Digital SATA QStor support"
+	depends on PCI
+	help
+	  This option enables support for Pacific Digital Serial ATA QStor.
+
+	  If unsure, say N.
+
+config SATA_SX4
+	tristate "Promise SATA SX4 support (Experimental)"
+	depends on PCI && EXPERIMENTAL
+	help
+	  This option enables support for Promise Serial ATA SX4.
+
+	  If unsure, say N.
+
+config ATA_BMDMA
+	bool "ATA BMDMA support"
+	default y
+	help
+	  This option adds support for SFF ATA controllers with BMDMA
+	  capability.  BMDMA stands for bus-master DMA and the
+	  de-facto DMA interface for SFF controllers.
+
+	  If unuser, say Y.
+
+if ATA_BMDMA
+
+comment "SATA SFF controllers with BMDMA"
+
 config ATA_PIIX
 	tristate "Intel ESB, ICH, PIIX3, PIIX4 PATA/SATA support"
 	depends on PCI
@@ -152,22 +204,6 @@
 
 	  If unsure, say N.
 
-config PDC_ADMA
-	tristate "Pacific Digital ADMA support"
-	depends on PCI
-	help
-	  This option enables support for Pacific Digital ADMA controllers
-
-	  If unsure, say N.
-
-config SATA_QSTOR
-	tristate "Pacific Digital SATA QStor support"
-	depends on PCI
-	help
-	  This option enables support for Pacific Digital Serial ATA QStor.
-
-	  If unsure, say N.
-
 config SATA_PROMISE
 	tristate "Promise SATA TX2/TX4 support"
 	depends on PCI
@@ -176,14 +212,6 @@
 
 	  If unsure, say N.
 
-config SATA_SX4
-	tristate "Promise SATA SX4 support (Experimental)"
-	depends on PCI && EXPERIMENTAL
-	help
-	  This option enables support for Promise Serial ATA SX4.
-
-	  If unsure, say N.
-
 config SATA_SIL
 	tristate "Silicon Image SATA support"
 	depends on PCI
@@ -203,6 +231,15 @@
 	  enable the PATA_SIS driver in the config.
 	  If unsure, say N.
 
+config SATA_SVW
+	tristate "ServerWorks Frodo / Apple K2 SATA support"
+	depends on PCI
+	help
+	  This option enables support for Broadcom/Serverworks/Apple K2
+	  SATA support.
+
+	  If unsure, say N.
+
 config SATA_ULI
 	tristate "ULi Electronics SATA support"
 	depends on PCI
@@ -227,14 +264,7 @@
 
 	  If unsure, say N.
 
-config PATA_ACPI
-	tristate "ACPI firmware driver for PATA"
-	depends on ATA_ACPI
-	help
-	  This option enables an ACPI method driver which drives
-	  motherboard PATA controller interfaces through the ACPI
-	  firmware in the BIOS. This driver can sometimes handle
-	  otherwise unsupported hardware.
+comment "PATA SFF controllers with BMDMA"
 
 config PATA_ALI
 	tristate "ALi PATA support"
@@ -262,24 +292,6 @@
 
 	  If unsure, say N.
 
-config PATA_ATP867X
-	tristate "ARTOP/Acard ATP867X PATA support"
-	depends on PCI
-	help
-	  This option enables support for ARTOP/Acard ATP867X PATA
-	  controllers.
-
-	  If unsure, say N.
-
-config PATA_AT32
-	tristate "Atmel AVR32 PATA support (Experimental)"
-	depends on AVR32 && PLATFORM_AT32AP && EXPERIMENTAL
-	help
-	  This option enables support for the IDE devices on the
-	  Atmel AT32AP platform.
-
-	  If unsure, say N.
-
 config PATA_ATIIXP
 	tristate "ATI PATA support"
 	depends on PCI
@@ -289,13 +301,21 @@
 
 	  If unsure, say N.
 
-config PATA_CMD640_PCI
-	tristate "CMD640 PCI PATA support (Experimental)"
-	depends on PCI && EXPERIMENTAL
+config PATA_ATP867X
+	tristate "ARTOP/Acard ATP867X PATA support"
+	depends on PCI
 	help
-	  This option enables support for the CMD640 PCI IDE
-	  interface chip. Only the primary channel is currently
-	  supported.
+	  This option enables support for ARTOP/Acard ATP867X PATA
+	  controllers.
+
+	  If unsure, say N.
+
+config PATA_BF54X
+	tristate "Blackfin 54x ATAPI support"
+	depends on BF542 || BF548 || BF549
+	help
+	  This option enables support for the built-in ATAPI controller on
+	  Blackfin 54x family chips.
 
 	  If unsure, say N.
 
@@ -362,15 +382,6 @@
 
 	  If unsure, say N.
 
-config ATA_GENERIC
-	tristate "Generic ATA support"
-	depends on PCI
-	help
-	  This option enables support for generic BIOS configured
-	  ATA controllers via the new ATA layer
-
-	  If unsure, say N.
-
 config PATA_HPT366
 	tristate "HPT 366/368 PATA support"
 	depends on PCI
@@ -415,12 +426,20 @@
 	  controllers. Enable with care as there are still some
 	  problems with DMA on this chipset.
 
-config PATA_ISAPNP
-	tristate "ISA Plug and Play PATA support"
-	depends on ISAPNP
+config PATA_ICSIDE
+	tristate "Acorn ICS PATA support"
+	depends on ARM && ARCH_ACORN
 	help
-	  This option enables support for ISA plug & play ATA
-	  controllers such as those found on old soundcards.
+	  On Acorn systems, say Y here if you wish to use the ICS PATA
+	  interface card.  This is not required for ICS partition support.
+	  If you are unsure, say N to this.
+
+config PATA_IT8213
+	tristate "IT8213 PATA support (Experimental)"
+	depends on PCI && EXPERIMENTAL
+	help
+	  This option enables support for the ITE 821 PATA
+          controllers via the new ATA layer.
 
 	  If unsure, say N.
 
@@ -434,15 +453,6 @@
 
 	  If unsure, say N.
 
-config PATA_IT8213
-	tristate "IT8213 PATA support (Experimental)"
-	depends on PCI && EXPERIMENTAL
-	help
-	  This option enables support for the ITE 821 PATA
-          controllers via the new ATA layer.
-
-	  If unsure, say N.
-
 config PATA_JMICRON
 	tristate "JMicron PATA support"
 	depends on PCI
@@ -452,23 +462,14 @@
 
 	  If unsure, say N.
 
-config PATA_LEGACY
-	tristate "Legacy ISA PATA support (Experimental)"
-	depends on (ISA || PCI)  && EXPERIMENTAL
+config PATA_MACIO
+	tristate "Apple PowerMac/PowerBook internal 'MacIO' IDE"
+	depends on PPC_PMAC
 	help
-	  This option enables support for ISA/VLB/PCI bus legacy PATA
-	  ports and allows them to be accessed via the new ATA layer.
-
-	  If unsure, say N.
-
-config PATA_TRIFLEX
-	tristate "Compaq Triflex PATA support"
-	depends on PCI
-	help
-	  Enable support for the Compaq 'Triflex' IDE controller as found
-	  on many Compaq Pentium-Pro systems, via the new ATA layer.
-
-	  If unsure, say N.
+	  Most IDE capable PowerMacs have IDE busses driven by a variant
+          of this controller which is part of the Apple chipset used on
+          most PowerMac models. Some models have multiple busses using
+          different chipsets, though generally, MacIO is one of them.
 
 config PATA_MARVELL
 	tristate "Marvell PATA support via legacy mode"
@@ -481,32 +482,6 @@
 
 	  If unsure, say N.
 
-config PATA_MPC52xx
-	tristate "Freescale MPC52xx SoC internal IDE"
-	depends on PPC_MPC52xx && PPC_BESTCOMM
-	select PPC_BESTCOMM_ATA
-	help
-	  This option enables support for integrated IDE controller
-	  of the Freescale MPC52xx SoC.
-
-	  If unsure, say N.
-
-config PATA_MPIIX
-	tristate "Intel PATA MPIIX support"
-	depends on PCI
-	help
-	  This option enables support for MPIIX PATA support.
-
-	  If unsure, say N.
-
-config PATA_OLDPIIX
-	tristate "Intel PATA old PIIX support"
-	depends on PCI
-	help
-	  This option enables support for early PIIX PATA support.
-
-	  If unsure, say N.
-
 config PATA_NETCELL
 	tristate "NETCELL Revolution RAID support"
 	depends on PCI
@@ -525,15 +500,6 @@
 
 	  If unsure, say N.
 
-config PATA_NS87410
-	tristate "Nat Semi NS87410 PATA support"
-	depends on PCI
-	help
-	  This option enables support for the National Semiconductor
-	  NS87410 PCI-IDE controller.
-
-	  If unsure, say N.
-
 config PATA_NS87415
 	tristate "Nat Semi NS87415 PATA support"
 	depends on PCI
@@ -543,12 +509,11 @@
 
 	  If unsure, say N.
 
-config PATA_OPTI
-	tristate "OPTI621/6215 PATA support (Very Experimental)"
-	depends on PCI && EXPERIMENTAL
+config PATA_OLDPIIX
+	tristate "Intel PATA old PIIX support"
+	depends on PCI
 	help
-	  This option enables full PIO support for the early Opti ATA
-	  controllers found on some old motherboards.
+	  This option enables support for early PIIX PATA support.
 
 	  If unsure, say N.
 
@@ -562,24 +527,6 @@
 
 	  If unsure, say N.
 
-config PATA_PALMLD
-	tristate "Palm LifeDrive PATA support"
-	depends on MACH_PALMLD
-	help
-	  This option enables support for Palm LifeDrive's internal ATA
-	  port via the new ATA layer.
-
-	  If unsure, say N.
-
-config PATA_PCMCIA
-	tristate "PCMCIA PATA support"
-	depends on PCMCIA
-	help
-	  This option enables support for PCMCIA ATA interfaces, including
-	  compact flash card adapters via the new ATA layer.
-
-	  If unsure, say N.
-
 config PATA_PDC2027X
 	tristate "Promise PATA 2027x support"
 	depends on PCI
@@ -597,12 +544,6 @@
 
 	  If unsure, say N.
 
-config PATA_QDI
-	tristate "QDI VLB PATA support"
-	depends on ISA
-	help
-	  Support for QDI 6500 and 6580 PATA controllers on VESA local bus.
-
 config PATA_RADISYS
 	tristate "RADISYS 82600 PATA support (Experimental)"
 	depends on PCI && EXPERIMENTAL
@@ -612,15 +553,6 @@
 
 	  If unsure, say N.
 
-config PATA_RB532
-	tristate "RouterBoard 532 PATA CompactFlash support"
-	depends on MIKROTIK_RB532
-	help
-	  This option enables support for the RouterBoard 532
-	  PATA CompactFlash controller.
-
-	  If unsure, say N.
-
 config PATA_RDC
 	tristate "RDC PATA support"
 	depends on PCI
@@ -631,15 +563,6 @@
 
 	  If unsure, say N.
 
-config PATA_RZ1000
-	tristate "PC Tech RZ1000 PATA support"
-	depends on PCI
-	help
-	  This option enables basic support for the PC Tech RZ1000/1
-	  PATA controllers via the new ATA layer
-
-	  If unsure, say N.
-
 config PATA_SC1200
 	tristate "SC1200 PATA support"
 	depends on PCI
@@ -649,6 +572,24 @@
 
 	  If unsure, say N.
 
+config PATA_SCC
+	tristate "Toshiba's Cell Reference Set IDE support"
+	depends on PCI && PPC_CELLEB
+	help
+	  This option enables support for the built-in IDE controller on
+	  Toshiba Cell Reference Board.
+
+	  If unsure, say N.
+
+config PATA_SCH
+	tristate "Intel SCH PATA support"
+	depends on PCI
+	help
+	  This option enables support for Intel SCH PATA on the Intel
+	  SCH (US15W, US15L, UL11L) series host controllers.
+
+	  If unsure, say N.
+
 config PATA_SERVERWORKS
 	tristate "SERVERWORKS OSB4/CSB5/CSB6/HT1000 PATA support"
 	depends on PCI
@@ -683,6 +624,15 @@
 
 	  If unsure, say N.
 
+config PATA_TRIFLEX
+	tristate "Compaq Triflex PATA support"
+	depends on PCI
+	help
+	  Enable support for the Compaq 'Triflex' IDE controller as found
+	  on many Compaq Pentium-Pro systems, via the new ATA layer.
+
+	  If unsure, say N.
+
 config PATA_VIA
 	tristate "VIA PATA support"
 	depends on PCI
@@ -701,12 +651,99 @@
 
 	  If unsure, say N.
 
-config PATA_WINBOND_VLB
-	tristate "Winbond W83759A VLB PATA support (Experimental)"
-	depends on ISA && EXPERIMENTAL
+endif # ATA_BMDMA
+
+comment "PIO-only SFF controllers"
+
+config PATA_AT32
+	tristate "Atmel AVR32 PATA support (Experimental)"
+	depends on AVR32 && PLATFORM_AT32AP && EXPERIMENTAL
 	help
-	  Support for the Winbond W83759A controller on Vesa Local Bus
-	  systems.
+	  This option enables support for the IDE devices on the
+	  Atmel AT32AP platform.
+
+	  If unsure, say N.
+
+config PATA_AT91
+	tristate "PATA support for AT91SAM9260"
+	depends on ARM && ARCH_AT91
+	help
+	  This option enables support for IDE devices on the Atmel AT91SAM9260 SoC.
+
+	  If unsure, say N.
+
+config PATA_CMD640_PCI
+	tristate "CMD640 PCI PATA support (Experimental)"
+	depends on PCI && EXPERIMENTAL
+	help
+	  This option enables support for the CMD640 PCI IDE
+	  interface chip. Only the primary channel is currently
+	  supported.
+
+	  If unsure, say N.
+
+config PATA_ISAPNP
+	tristate "ISA Plug and Play PATA support"
+	depends on ISAPNP
+	help
+	  This option enables support for ISA plug & play ATA
+	  controllers such as those found on old soundcards.
+
+	  If unsure, say N.
+
+config PATA_IXP4XX_CF
+	tristate "IXP4XX Compact Flash support"
+	depends on ARCH_IXP4XX
+	help
+	  This option enables support for a Compact Flash connected on
+	  the ixp4xx expansion bus. This driver had been written for
+	  Loft/Avila boards in mind but can work with others.
+
+	  If unsure, say N.
+
+config PATA_MPIIX
+	tristate "Intel PATA MPIIX support"
+	depends on PCI
+	help
+	  This option enables support for MPIIX PATA support.
+
+	  If unsure, say N.
+
+config PATA_NS87410
+	tristate "Nat Semi NS87410 PATA support"
+	depends on PCI
+	help
+	  This option enables support for the National Semiconductor
+	  NS87410 PCI-IDE controller.
+
+	  If unsure, say N.
+
+config PATA_OPTI
+	tristate "OPTI621/6215 PATA support (Very Experimental)"
+	depends on PCI && EXPERIMENTAL
+	help
+	  This option enables full PIO support for the early Opti ATA
+	  controllers found on some old motherboards.
+
+	  If unsure, say N.
+
+config PATA_PALMLD
+	tristate "Palm LifeDrive PATA support"
+	depends on MACH_PALMLD
+	help
+	  This option enables support for Palm LifeDrive's internal ATA
+	  port via the new ATA layer.
+
+	  If unsure, say N.
+
+config PATA_PCMCIA
+	tristate "PCMCIA PATA support"
+	depends on PCMCIA
+	help
+	  This option enables support for PCMCIA ATA interfaces, including
+	  compact flash card adapters via the new ATA layer.
+
+	  If unsure, say N.
 
 config HAVE_PATA_PLATFORM
 	bool
@@ -725,14 +762,6 @@
 
 	  If unsure, say N.
 
-config PATA_AT91
-	tristate "PATA support for AT91SAM9260"
-	depends on ARM && ARCH_AT91
-	help
-	  This option enables support for IDE devices on the Atmel AT91SAM9260 SoC.
-
-	  If unsure, say N.
-
 config PATA_OF_PLATFORM
 	tristate "OpenFirmware platform device PATA support"
 	depends on PATA_PLATFORM && PPC_OF
@@ -743,69 +772,65 @@
 
 	  If unsure, say N.
 
-config PATA_ICSIDE
-	tristate "Acorn ICS PATA support"
-	depends on ARM && ARCH_ACORN
+config PATA_QDI
+	tristate "QDI VLB PATA support"
+	depends on ISA
 	help
-	  On Acorn systems, say Y here if you wish to use the ICS PATA
-	  interface card.  This is not required for ICS partition support.
-	  If you are unsure, say N to this.
+	  Support for QDI 6500 and 6580 PATA controllers on VESA local bus.
 
-config PATA_IXP4XX_CF
-	tristate "IXP4XX Compact Flash support"
-	depends on ARCH_IXP4XX
+config PATA_RB532
+	tristate "RouterBoard 532 PATA CompactFlash support"
+	depends on MIKROTIK_RB532
 	help
-	  This option enables support for a Compact Flash connected on
-	  the ixp4xx expansion bus. This driver had been written for
-	  Loft/Avila boards in mind but can work with others.
+	  This option enables support for the RouterBoard 532
+	  PATA CompactFlash controller.
 
 	  If unsure, say N.
 
-config PATA_OCTEON_CF
-	tristate "OCTEON Boot Bus Compact Flash support"
-	depends on CPU_CAVIUM_OCTEON
-	help
-	  This option enables a polled compact flash driver for use with
-	  compact flash cards attached to the OCTEON boot bus.
-
-	  If unsure, say N.
-
-config PATA_SCC
-	tristate "Toshiba's Cell Reference Set IDE support"
-	depends on PCI && PPC_CELLEB
-	help
-	  This option enables support for the built-in IDE controller on
-	  Toshiba Cell Reference Board.
-
-	  If unsure, say N.
-
-config PATA_SCH
-	tristate "Intel SCH PATA support"
+config PATA_RZ1000
+	tristate "PC Tech RZ1000 PATA support"
 	depends on PCI
 	help
-	  This option enables support for Intel SCH PATA on the Intel
-	  SCH (US15W, US15L, UL11L) series host controllers.
+	  This option enables basic support for the PC Tech RZ1000/1
+	  PATA controllers via the new ATA layer
 
 	  If unsure, say N.
 
-config PATA_BF54X
-	tristate "Blackfin 54x ATAPI support"
-	depends on BF542 || BF548 || BF549
+config PATA_WINBOND_VLB
+	tristate "Winbond W83759A VLB PATA support (Experimental)"
+	depends on ISA && EXPERIMENTAL
 	help
-	  This option enables support for the built-in ATAPI controller on
-	  Blackfin 54x family chips.
+	  Support for the Winbond W83759A controller on Vesa Local Bus
+	  systems.
+
+comment "Generic fallback / legacy drivers"
+
+config PATA_ACPI
+	tristate "ACPI firmware driver for PATA"
+	depends on ATA_ACPI && ATA_BMDMA
+	help
+	  This option enables an ACPI method driver which drives
+	  motherboard PATA controller interfaces through the ACPI
+	  firmware in the BIOS. This driver can sometimes handle
+	  otherwise unsupported hardware.
+
+config ATA_GENERIC
+	tristate "Generic ATA support"
+	depends on PCI && ATA_BMDMA
+	help
+	  This option enables support for generic BIOS configured
+	  ATA controllers via the new ATA layer
 
 	  If unsure, say N.
 
-config PATA_MACIO
-	tristate "Apple PowerMac/PowerBook internal 'MacIO' IDE"
-	depends on PPC_PMAC
+config PATA_LEGACY
+	tristate "Legacy ISA PATA support (Experimental)"
+	depends on (ISA || PCI) && EXPERIMENTAL
 	help
-	  Most IDE capable PowerMacs have IDE busses driven by a variant
-          of this controller which is part of the Apple chipset used on
-          most PowerMac models. Some models have multiple busses using
-          different chipsets, though generally, MacIO is one of them.
+	  This option enables support for ISA/VLB/PCI bus legacy PATA
+	  ports and allows them to be accessed via the new ATA layer.
 
+	  If unsure, say N.
 
 endif # ATA_SFF
 endif # ATA
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index d0a93c4..7ef89d7 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -1,33 +1,39 @@
 
 obj-$(CONFIG_ATA)		+= libata.o
 
+# non-SFF interface
 obj-$(CONFIG_SATA_AHCI)		+= ahci.o libahci.o
 obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o
-obj-$(CONFIG_SATA_SVW)		+= sata_svw.o
-obj-$(CONFIG_ATA_PIIX)		+= ata_piix.o
-obj-$(CONFIG_SATA_PROMISE)	+= sata_promise.o
-obj-$(CONFIG_SATA_QSTOR)	+= sata_qstor.o
-obj-$(CONFIG_SATA_SIL)		+= sata_sil.o
+obj-$(CONFIG_SATA_FSL)		+= sata_fsl.o
+obj-$(CONFIG_SATA_INIC162X)	+= sata_inic162x.o
 obj-$(CONFIG_SATA_SIL24)	+= sata_sil24.o
+
+# SFF w/ custom DMA
+obj-$(CONFIG_PDC_ADMA)		+= pdc_adma.o
+obj-$(CONFIG_PATA_MPC52xx)	+= pata_mpc52xx.o
+obj-$(CONFIG_PATA_OCTEON_CF)	+= pata_octeon_cf.o
+obj-$(CONFIG_SATA_QSTOR)	+= sata_qstor.o
+obj-$(CONFIG_SATA_SX4)		+= sata_sx4.o
+
+# SFF SATA w/ BMDMA
+obj-$(CONFIG_ATA_PIIX)		+= ata_piix.o
+obj-$(CONFIG_SATA_MV)		+= sata_mv.o
+obj-$(CONFIG_SATA_NV)		+= sata_nv.o
+obj-$(CONFIG_SATA_PROMISE)	+= sata_promise.o
+obj-$(CONFIG_SATA_SIL)		+= sata_sil.o
+obj-$(CONFIG_SATA_SIS)		+= sata_sis.o
+obj-$(CONFIG_SATA_SVW)		+= sata_svw.o
+obj-$(CONFIG_SATA_ULI)		+= sata_uli.o
 obj-$(CONFIG_SATA_VIA)		+= sata_via.o
 obj-$(CONFIG_SATA_VITESSE)	+= sata_vsc.o
-obj-$(CONFIG_SATA_SIS)		+= sata_sis.o
-obj-$(CONFIG_SATA_SX4)		+= sata_sx4.o
-obj-$(CONFIG_SATA_NV)		+= sata_nv.o
-obj-$(CONFIG_SATA_ULI)		+= sata_uli.o
-obj-$(CONFIG_SATA_MV)		+= sata_mv.o
-obj-$(CONFIG_SATA_INIC162X)	+= sata_inic162x.o
-obj-$(CONFIG_PDC_ADMA)		+= pdc_adma.o
-obj-$(CONFIG_SATA_FSL)		+= sata_fsl.o
-obj-$(CONFIG_PATA_MACIO)	+= pata_macio.o
 
+# SFF PATA w/ BMDMA
 obj-$(CONFIG_PATA_ALI)		+= pata_ali.o
 obj-$(CONFIG_PATA_AMD)		+= pata_amd.o
 obj-$(CONFIG_PATA_ARTOP)	+= pata_artop.o
-obj-$(CONFIG_PATA_ATP867X)	+= pata_atp867x.o
-obj-$(CONFIG_PATA_AT32)		+= pata_at32.o
 obj-$(CONFIG_PATA_ATIIXP)	+= pata_atiixp.o
-obj-$(CONFIG_PATA_CMD640_PCI)	+= pata_cmd640.o
+obj-$(CONFIG_PATA_ATP867X)	+= pata_atp867x.o
+obj-$(CONFIG_PATA_BF54X)	+= pata_bf54x.o
 obj-$(CONFIG_PATA_CMD64X)	+= pata_cmd64x.o
 obj-$(CONFIG_PATA_CS5520)	+= pata_cs5520.o
 obj-$(CONFIG_PATA_CS5530)	+= pata_cs5530.o
@@ -39,47 +45,50 @@
 obj-$(CONFIG_PATA_HPT37X)	+= pata_hpt37x.o
 obj-$(CONFIG_PATA_HPT3X2N)	+= pata_hpt3x2n.o
 obj-$(CONFIG_PATA_HPT3X3)	+= pata_hpt3x3.o
-obj-$(CONFIG_PATA_ISAPNP)	+= pata_isapnp.o
-obj-$(CONFIG_PATA_IT821X)	+= pata_it821x.o
+obj-$(CONFIG_PATA_ICSIDE)	+= pata_icside.o
 obj-$(CONFIG_PATA_IT8213)	+= pata_it8213.o
+obj-$(CONFIG_PATA_IT821X)	+= pata_it821x.o
 obj-$(CONFIG_PATA_JMICRON)	+= pata_jmicron.o
+obj-$(CONFIG_PATA_MACIO)	+= pata_macio.o
+obj-$(CONFIG_PATA_MARVELL)	+= pata_marvell.o
 obj-$(CONFIG_PATA_NETCELL)	+= pata_netcell.o
 obj-$(CONFIG_PATA_NINJA32)	+= pata_ninja32.o
-obj-$(CONFIG_PATA_NS87410)	+= pata_ns87410.o
 obj-$(CONFIG_PATA_NS87415)	+= pata_ns87415.o
-obj-$(CONFIG_PATA_OPTI)		+= pata_opti.o
-obj-$(CONFIG_PATA_OPTIDMA)	+= pata_optidma.o
-obj-$(CONFIG_PATA_MPC52xx)	+= pata_mpc52xx.o
-obj-$(CONFIG_PATA_MARVELL)	+= pata_marvell.o
-obj-$(CONFIG_PATA_MPIIX)	+= pata_mpiix.o
 obj-$(CONFIG_PATA_OLDPIIX)	+= pata_oldpiix.o
-obj-$(CONFIG_PATA_PALMLD)	+= pata_palmld.o
-obj-$(CONFIG_PATA_PCMCIA)	+= pata_pcmcia.o
+obj-$(CONFIG_PATA_OPTIDMA)	+= pata_optidma.o
 obj-$(CONFIG_PATA_PDC2027X)	+= pata_pdc2027x.o
 obj-$(CONFIG_PATA_PDC_OLD)	+= pata_pdc202xx_old.o
-obj-$(CONFIG_PATA_QDI)		+= pata_qdi.o
 obj-$(CONFIG_PATA_RADISYS)	+= pata_radisys.o
-obj-$(CONFIG_PATA_RB532)	+= pata_rb532_cf.o
 obj-$(CONFIG_PATA_RDC)		+= pata_rdc.o
-obj-$(CONFIG_PATA_RZ1000)	+= pata_rz1000.o
 obj-$(CONFIG_PATA_SC1200)	+= pata_sc1200.o
-obj-$(CONFIG_PATA_SERVERWORKS)	+= pata_serverworks.o
-obj-$(CONFIG_PATA_SIL680)	+= pata_sil680.o
-obj-$(CONFIG_PATA_TOSHIBA)	+= pata_piccolo.o
-obj-$(CONFIG_PATA_VIA)		+= pata_via.o
-obj-$(CONFIG_PATA_WINBOND)	+= pata_sl82c105.o
-obj-$(CONFIG_PATA_WINBOND_VLB)	+= pata_winbond.o
-obj-$(CONFIG_PATA_SIS)		+= pata_sis.o
-obj-$(CONFIG_PATA_TRIFLEX)	+= pata_triflex.o
-obj-$(CONFIG_PATA_IXP4XX_CF)	+= pata_ixp4xx_cf.o
 obj-$(CONFIG_PATA_SCC)		+= pata_scc.o
 obj-$(CONFIG_PATA_SCH)		+= pata_sch.o
-obj-$(CONFIG_PATA_BF54X)	+= pata_bf54x.o
-obj-$(CONFIG_PATA_OCTEON_CF)	+= pata_octeon_cf.o
+obj-$(CONFIG_PATA_SERVERWORKS)	+= pata_serverworks.o
+obj-$(CONFIG_PATA_SIL680)	+= pata_sil680.o
+obj-$(CONFIG_PATA_SIS)		+= pata_sis.o
+obj-$(CONFIG_PATA_TOSHIBA)	+= pata_piccolo.o
+obj-$(CONFIG_PATA_TRIFLEX)	+= pata_triflex.o
+obj-$(CONFIG_PATA_VIA)		+= pata_via.o
+obj-$(CONFIG_PATA_WINBOND)	+= pata_sl82c105.o
+
+# SFF PIO only
+obj-$(CONFIG_PATA_AT32)		+= pata_at32.o
+obj-$(CONFIG_PATA_AT91)		+= pata_at91.o
+obj-$(CONFIG_PATA_CMD640_PCI)	+= pata_cmd640.o
+obj-$(CONFIG_PATA_ISAPNP)	+= pata_isapnp.o
+obj-$(CONFIG_PATA_IXP4XX_CF)	+= pata_ixp4xx_cf.o
+obj-$(CONFIG_PATA_MPIIX)	+= pata_mpiix.o
+obj-$(CONFIG_PATA_NS87410)	+= pata_ns87410.o
+obj-$(CONFIG_PATA_OPTI)		+= pata_opti.o
+obj-$(CONFIG_PATA_PCMCIA)	+= pata_pcmcia.o
+obj-$(CONFIG_PATA_PALMLD)	+= pata_palmld.o
 obj-$(CONFIG_PATA_PLATFORM)	+= pata_platform.o
-obj-$(CONFIG_PATA_AT91)	+= pata_at91.o
 obj-$(CONFIG_PATA_OF_PLATFORM)	+= pata_of_platform.o
-obj-$(CONFIG_PATA_ICSIDE)	+= pata_icside.o
+obj-$(CONFIG_PATA_QDI)		+= pata_qdi.o
+obj-$(CONFIG_PATA_RB532)	+= pata_rb532_cf.o
+obj-$(CONFIG_PATA_RZ1000)	+= pata_rz1000.o
+obj-$(CONFIG_PATA_WINBOND_VLB)	+= pata_winbond.o
+
 # Should be last but two libata driver
 obj-$(CONFIG_PATA_ACPI)		+= pata_acpi.o
 # Should be last but one libata driver
diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c
index 33fb614..573158a 100644
--- a/drivers/ata/ata_generic.c
+++ b/drivers/ata/ata_generic.c
@@ -155,7 +155,7 @@
 			return rc;
 		pcim_pin_device(dev);
 	}
-	return ata_pci_sff_init_one(dev, ppi, &generic_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &generic_sht, NULL, 0);
 }
 
 static struct pci_device_id ata_generic[] = {
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index ec52fc6..7409f98 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1589,7 +1589,7 @@
 		hpriv->map = piix_init_sata_map(pdev, port_info,
 					piix_map_db_table[ent->driver_data]);
 
-	rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
 	if (rc)
 		return rc;
 	host->private_data = hpriv;
@@ -1626,7 +1626,7 @@
 	host->flags |= ATA_HOST_PARALLEL_SCAN;
 
 	pci_set_master(pdev);
-	return ata_pci_sff_activate_host(host, ata_sff_interrupt, &piix_sht);
+	return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, &piix_sht);
 }
 
 static void piix_remove_one(struct pci_dev *pdev)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index c47373f..06b7e49 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -160,6 +160,10 @@
 module_param_named(allow_tpm, libata_allow_tpm, int, 0444);
 MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)");
 
+static int atapi_an;
+module_param(atapi_an, int, 0444);
+MODULE_PARM_DESC(atapi_an, "Enable ATAPI AN media presence notification (0=0ff [default], 1=on)");
+
 MODULE_AUTHOR("Jeff Garzik");
 MODULE_DESCRIPTION("Library module for ATA devices");
 MODULE_LICENSE("GPL");
@@ -2122,6 +2126,14 @@
 		goto err_out;
 	}
 
+	if (dev->horkage & ATA_HORKAGE_DUMP_ID) {
+		ata_dev_printk(dev, KERN_DEBUG, "dumping IDENTIFY data, "
+			       "class=%d may_fallback=%d tried_spinup=%d\n",
+			       class, may_fallback, tried_spinup);
+		print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET,
+			       16, 2, id, ATA_ID_WORDS * sizeof(*id), true);
+	}
+
 	/* Falling back doesn't make sense if ID data was read
 	 * successfully at least once.
 	 */
@@ -2510,7 +2522,8 @@
 		 * to enable ATAPI AN to discern between PHY status
 		 * changed notifications and ATAPI ANs.
 		 */
-		if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
+		if (atapi_an &&
+		    (ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
 		    (!sata_pmp_attached(ap) ||
 		     sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
 			unsigned int err_mask;
@@ -6372,6 +6385,7 @@
 		{ "3.0Gbps",	.spd_limit	= 2 },
 		{ "noncq",	.horkage_on	= ATA_HORKAGE_NONCQ },
 		{ "ncq",	.horkage_off	= ATA_HORKAGE_NONCQ },
+		{ "dump_id",	.horkage_on	= ATA_HORKAGE_DUMP_ID },
 		{ "pio0",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 0) },
 		{ "pio1",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 1) },
 		{ "pio2",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 2) },
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 19ddf92..efa4a18 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -63,7 +63,6 @@
 	.sff_tf_read		= ata_sff_tf_read,
 	.sff_exec_command	= ata_sff_exec_command,
 	.sff_data_xfer		= ata_sff_data_xfer,
-	.sff_irq_clear		= ata_sff_irq_clear,
 	.sff_drain_fifo		= ata_sff_drain_fifo,
 
 	.lost_interrupt		= ata_sff_lost_interrupt,
@@ -395,33 +394,12 @@
 		ata_sff_set_devctl(ap, ap->ctl);
 	ata_wait_idle(ap);
 
-	ap->ops->sff_irq_clear(ap);
+	if (ap->ops->sff_irq_clear)
+		ap->ops->sff_irq_clear(ap);
 }
 EXPORT_SYMBOL_GPL(ata_sff_irq_on);
 
 /**
- *	ata_sff_irq_clear - Clear PCI IDE BMDMA interrupt.
- *	@ap: Port associated with this ATA transaction.
- *
- *	Clear interrupt and error flags in DMA status register.
- *
- *	May be used as the irq_clear() entry in ata_port_operations.
- *
- *	LOCKING:
- *	spin_lock_irqsave(host lock)
- */
-void ata_sff_irq_clear(struct ata_port *ap)
-{
-	void __iomem *mmio = ap->ioaddr.bmdma_addr;
-
-	if (!mmio)
-		return;
-
-	iowrite8(ioread8(mmio + ATA_DMA_STATUS), mmio + ATA_DMA_STATUS);
-}
-EXPORT_SYMBOL_GPL(ata_sff_irq_clear);
-
-/**
  *	ata_sff_tf_load - send taskfile registers to host controller
  *	@ap: Port to which output is sent
  *	@tf: ATA taskfile register set
@@ -820,11 +798,15 @@
 	case ATAPI_PROT_NODATA:
 		ap->hsm_task_state = HSM_ST_LAST;
 		break;
+#ifdef CONFIG_ATA_BMDMA
 	case ATAPI_PROT_DMA:
 		ap->hsm_task_state = HSM_ST_LAST;
 		/* initiate bmdma */
 		ap->ops->bmdma_start(qc);
 		break;
+#endif /* CONFIG_ATA_BMDMA */
+	default:
+		BUG();
 	}
 }
 
@@ -1491,27 +1473,27 @@
 }
 EXPORT_SYMBOL_GPL(ata_sff_qc_fill_rtf);
 
-/**
- *	ata_sff_host_intr - Handle host interrupt for given (port, task)
- *	@ap: Port on which interrupt arrived (possibly...)
- *	@qc: Taskfile currently active in engine
- *
- *	Handle host interrupt for given queued command.  Currently,
- *	only DMA interrupts are handled.  All other commands are
- *	handled via polling with interrupts disabled (nIEN bit).
- *
- *	LOCKING:
- *	spin_lock_irqsave(host lock)
- *
- *	RETURNS:
- *	One if interrupt was handled, zero if not (shared irq).
- */
-unsigned int ata_sff_host_intr(struct ata_port *ap,
-				      struct ata_queued_cmd *qc)
+static unsigned int ata_sff_idle_irq(struct ata_port *ap)
 {
-	struct ata_eh_info *ehi = &ap->link.eh_info;
-	u8 status, host_stat = 0;
-	bool bmdma_stopped = false;
+	ap->stats.idle_irq++;
+
+#ifdef ATA_IRQ_TRAP
+	if ((ap->stats.idle_irq % 1000) == 0) {
+		ap->ops->sff_check_status(ap);
+		if (ap->ops->sff_irq_clear)
+			ap->ops->sff_irq_clear(ap);
+		ata_port_printk(ap, KERN_WARNING, "irq trap\n");
+		return 1;
+	}
+#endif
+	return 0;	/* irq not handled */
+}
+
+static unsigned int __ata_sff_port_intr(struct ata_port *ap,
+					struct ata_queued_cmd *qc,
+					bool hsmv_on_idle)
+{
+	u8 status;
 
 	VPRINTK("ata%u: protocol %d task_state %d\n",
 		ap->print_id, qc->tf.protocol, ap->hsm_task_state);
@@ -1528,90 +1510,56 @@
 		 * need to check ata_is_atapi(qc->tf.protocol) again.
 		 */
 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
-			goto idle_irq;
-		break;
-	case HSM_ST_LAST:
-		if (qc->tf.protocol == ATA_PROT_DMA ||
-		    qc->tf.protocol == ATAPI_PROT_DMA) {
-			/* check status of DMA engine */
-			host_stat = ap->ops->bmdma_status(ap);
-			VPRINTK("ata%u: host_stat 0x%X\n",
-				ap->print_id, host_stat);
-
-			/* if it's not our irq... */
-			if (!(host_stat & ATA_DMA_INTR))
-				goto idle_irq;
-
-			/* before we do anything else, clear DMA-Start bit */
-			ap->ops->bmdma_stop(qc);
-			bmdma_stopped = true;
-
-			if (unlikely(host_stat & ATA_DMA_ERR)) {
-				/* error when transfering data to/from memory */
-				qc->err_mask |= AC_ERR_HOST_BUS;
-				ap->hsm_task_state = HSM_ST_ERR;
-			}
-		}
+			return ata_sff_idle_irq(ap);
 		break;
 	case HSM_ST:
+	case HSM_ST_LAST:
 		break;
 	default:
-		goto idle_irq;
+		return ata_sff_idle_irq(ap);
 	}
 
-
 	/* check main status, clearing INTRQ if needed */
 	status = ata_sff_irq_status(ap);
 	if (status & ATA_BUSY) {
-		if (bmdma_stopped) {
+		if (hsmv_on_idle) {
 			/* BMDMA engine is already stopped, we're screwed */
 			qc->err_mask |= AC_ERR_HSM;
 			ap->hsm_task_state = HSM_ST_ERR;
 		} else
-			goto idle_irq;
+			return ata_sff_idle_irq(ap);
 	}
 
 	/* clear irq events */
-	ap->ops->sff_irq_clear(ap);
+	if (ap->ops->sff_irq_clear)
+		ap->ops->sff_irq_clear(ap);
 
 	ata_sff_hsm_move(ap, qc, status, 0);
 
-	if (unlikely(qc->err_mask) && (qc->tf.protocol == ATA_PROT_DMA ||
-				       qc->tf.protocol == ATAPI_PROT_DMA))
-		ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
-
 	return 1;	/* irq handled */
-
-idle_irq:
-	ap->stats.idle_irq++;
-
-#ifdef ATA_IRQ_TRAP
-	if ((ap->stats.idle_irq % 1000) == 0) {
-		ap->ops->sff_check_status(ap);
-		ap->ops->sff_irq_clear(ap);
-		ata_port_printk(ap, KERN_WARNING, "irq trap\n");
-		return 1;
-	}
-#endif
-	return 0;	/* irq not handled */
 }
-EXPORT_SYMBOL_GPL(ata_sff_host_intr);
 
 /**
- *	ata_sff_interrupt - Default ATA host interrupt handler
- *	@irq: irq line (unused)
- *	@dev_instance: pointer to our ata_host information structure
+ *	ata_sff_port_intr - Handle SFF port interrupt
+ *	@ap: Port on which interrupt arrived (possibly...)
+ *	@qc: Taskfile currently active in engine
  *
- *	Default interrupt handler for PCI IDE devices.  Calls
- *	ata_sff_host_intr() for each port that is not disabled.
+ *	Handle port interrupt for given queued command.
  *
  *	LOCKING:
- *	Obtains host lock during operation.
+ *	spin_lock_irqsave(host lock)
  *
  *	RETURNS:
- *	IRQ_NONE or IRQ_HANDLED.
+ *	One if interrupt was handled, zero if not (shared irq).
  */
-irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
+unsigned int ata_sff_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
+{
+	return __ata_sff_port_intr(ap, qc, false);
+}
+EXPORT_SYMBOL_GPL(ata_sff_port_intr);
+
+static inline irqreturn_t __ata_sff_interrupt(int irq, void *dev_instance,
+	unsigned int (*port_intr)(struct ata_port *, struct ata_queued_cmd *))
 {
 	struct ata_host *host = dev_instance;
 	bool retried = false;
@@ -1631,7 +1579,7 @@
 		qc = ata_qc_from_tag(ap, ap->link.active_tag);
 		if (qc) {
 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))
-				handled |= ata_sff_host_intr(ap, qc);
+				handled |= port_intr(ap, qc);
 			else
 				polling |= 1 << i;
 		} else
@@ -1658,7 +1606,8 @@
 
 			if (idle & (1 << i)) {
 				ap->ops->sff_check_status(ap);
-				ap->ops->sff_irq_clear(ap);
+				if (ap->ops->sff_irq_clear)
+					ap->ops->sff_irq_clear(ap);
 			} else {
 				/* clear INTRQ and check if BUSY cleared */
 				if (!(ap->ops->sff_check_status(ap) & ATA_BUSY))
@@ -1680,6 +1629,25 @@
 
 	return IRQ_RETVAL(handled);
 }
+
+/**
+ *	ata_sff_interrupt - Default SFF ATA host interrupt handler
+ *	@irq: irq line (unused)
+ *	@dev_instance: pointer to our ata_host information structure
+ *
+ *	Default interrupt handler for PCI IDE devices.  Calls
+ *	ata_sff_port_intr() for each port that is not disabled.
+ *
+ *	LOCKING:
+ *	Obtains host lock during operation.
+ *
+ *	RETURNS:
+ *	IRQ_NONE or IRQ_HANDLED.
+ */
+irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
+{
+	return __ata_sff_interrupt(irq, dev_instance, ata_sff_port_intr);
+}
 EXPORT_SYMBOL_GPL(ata_sff_interrupt);
 
 /**
@@ -1717,7 +1685,7 @@
 								status);
 	/* Run the host interrupt logic as if the interrupt had not been
 	   lost */
-	ata_sff_host_intr(ap, qc);
+	ata_sff_port_intr(ap, qc);
 }
 EXPORT_SYMBOL_GPL(ata_sff_lost_interrupt);
 
@@ -1744,7 +1712,8 @@
 	 */
 	ap->ops->sff_check_status(ap);
 
-	ap->ops->sff_irq_clear(ap);
+	if (ap->ops->sff_irq_clear)
+		ap->ops->sff_irq_clear(ap);
 }
 EXPORT_SYMBOL_GPL(ata_sff_freeze);
 
@@ -1761,7 +1730,8 @@
 {
 	/* clear & re-enable interrupts */
 	ap->ops->sff_check_status(ap);
-	ap->ops->sff_irq_clear(ap);
+	if (ap->ops->sff_irq_clear)
+		ap->ops->sff_irq_clear(ap);
 	ata_sff_irq_on(ap);
 }
 EXPORT_SYMBOL_GPL(ata_sff_thaw);
@@ -2349,13 +2319,13 @@
 EXPORT_SYMBOL_GPL(ata_pci_sff_init_host);
 
 /**
- *	ata_pci_sff_prepare_host - helper to prepare native PCI ATA host
+ *	ata_pci_sff_prepare_host - helper to prepare PCI PIO-only SFF ATA host
  *	@pdev: target PCI device
  *	@ppi: array of port_info, must be enough for two ports
  *	@r_host: out argument for the initialized ATA host
  *
- *	Helper to allocate ATA host for @pdev, acquire all native PCI
- *	resources and initialize it accordingly in one go.
+ *	Helper to allocate PIO-only SFF ATA host for @pdev, acquire
+ *	all PCI resources and initialize it accordingly in one go.
  *
  *	LOCKING:
  *	Inherited from calling layer (may sleep).
@@ -2385,9 +2355,6 @@
 	if (rc)
 		goto err_out;
 
-	/* init DMA related stuff */
-	ata_pci_bmdma_init(host);
-
 	devres_remove_group(&pdev->dev, NULL);
 	*r_host = host;
 	return 0;
@@ -2492,8 +2459,21 @@
 }
 EXPORT_SYMBOL_GPL(ata_pci_sff_activate_host);
 
+static const struct ata_port_info *ata_sff_find_valid_pi(
+					const struct ata_port_info * const *ppi)
+{
+	int i;
+
+	/* look up the first valid port_info */
+	for (i = 0; i < 2 && ppi[i]; i++)
+		if (ppi[i]->port_ops != &ata_dummy_port_ops)
+			return ppi[i];
+
+	return NULL;
+}
+
 /**
- *	ata_pci_sff_init_one - Initialize/register PCI IDE host controller
+ *	ata_pci_sff_init_one - Initialize/register PIO-only PCI IDE controller
  *	@pdev: Controller to be initialized
  *	@ppi: array of port_info, must be enough for two ports
  *	@sht: scsi_host_template to use when registering the host
@@ -2502,11 +2482,7 @@
  *
  *	This is a helper function which can be called from a driver's
  *	xxx_init_one() probe function if the hardware uses traditional
- *	IDE taskfile registers.
- *
- *	This function calls pci_enable_device(), reserves its register
- *	regions, sets the dma mask, enables bus master mode, and calls
- *	ata_device_add()
+ *	IDE taskfile registers and is PIO only.
  *
  *	ASSUMPTION:
  *	Nobody makes a single channel controller that appears solely as
@@ -2523,20 +2499,13 @@
 		 struct scsi_host_template *sht, void *host_priv, int hflag)
 {
 	struct device *dev = &pdev->dev;
-	const struct ata_port_info *pi = NULL;
+	const struct ata_port_info *pi;
 	struct ata_host *host = NULL;
-	int i, rc;
+	int rc;
 
 	DPRINTK("ENTER\n");
 
-	/* look up the first valid port_info */
-	for (i = 0; i < 2 && ppi[i]; i++) {
-		if (ppi[i]->port_ops != &ata_dummy_port_ops) {
-			pi = ppi[i];
-			break;
-		}
-	}
-
+	pi = ata_sff_find_valid_pi(ppi);
 	if (!pi) {
 		dev_printk(KERN_ERR, &pdev->dev,
 			   "no valid port_info specified\n");
@@ -2557,7 +2526,6 @@
 	host->private_data = host_priv;
 	host->flags |= hflag;
 
-	pci_set_master(pdev);
 	rc = ata_pci_sff_activate_host(host, ata_sff_interrupt, sht);
 out:
 	if (rc == 0)
@@ -2571,6 +2539,12 @@
 
 #endif /* CONFIG_PCI */
 
+/*
+ *	BMDMA support
+ */
+
+#ifdef CONFIG_ATA_BMDMA
+
 const struct ata_port_operations ata_bmdma_port_ops = {
 	.inherits		= &ata_sff_port_ops,
 
@@ -2580,6 +2554,7 @@
 	.qc_prep		= ata_bmdma_qc_prep,
 	.qc_issue		= ata_bmdma_qc_issue,
 
+	.sff_irq_clear		= ata_bmdma_irq_clear,
 	.bmdma_setup		= ata_bmdma_setup,
 	.bmdma_start		= ata_bmdma_start,
 	.bmdma_stop		= ata_bmdma_stop,
@@ -2804,6 +2779,75 @@
 EXPORT_SYMBOL_GPL(ata_bmdma_qc_issue);
 
 /**
+ *	ata_bmdma_port_intr - Handle BMDMA port interrupt
+ *	@ap: Port on which interrupt arrived (possibly...)
+ *	@qc: Taskfile currently active in engine
+ *
+ *	Handle port interrupt for given queued command.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ *
+ *	RETURNS:
+ *	One if interrupt was handled, zero if not (shared irq).
+ */
+unsigned int ata_bmdma_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
+{
+	struct ata_eh_info *ehi = &ap->link.eh_info;
+	u8 host_stat = 0;
+	bool bmdma_stopped = false;
+	unsigned int handled;
+
+	if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) {
+		/* check status of DMA engine */
+		host_stat = ap->ops->bmdma_status(ap);
+		VPRINTK("ata%u: host_stat 0x%X\n", ap->print_id, host_stat);
+
+		/* if it's not our irq... */
+		if (!(host_stat & ATA_DMA_INTR))
+			return ata_sff_idle_irq(ap);
+
+		/* before we do anything else, clear DMA-Start bit */
+		ap->ops->bmdma_stop(qc);
+		bmdma_stopped = true;
+
+		if (unlikely(host_stat & ATA_DMA_ERR)) {
+			/* error when transfering data to/from memory */
+			qc->err_mask |= AC_ERR_HOST_BUS;
+			ap->hsm_task_state = HSM_ST_ERR;
+		}
+	}
+
+	handled = __ata_sff_port_intr(ap, qc, bmdma_stopped);
+
+	if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol))
+		ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat);
+
+	return handled;
+}
+EXPORT_SYMBOL_GPL(ata_bmdma_port_intr);
+
+/**
+ *	ata_bmdma_interrupt - Default BMDMA ATA host interrupt handler
+ *	@irq: irq line (unused)
+ *	@dev_instance: pointer to our ata_host information structure
+ *
+ *	Default interrupt handler for PCI IDE devices.  Calls
+ *	ata_bmdma_port_intr() for each port that is not disabled.
+ *
+ *	LOCKING:
+ *	Obtains host lock during operation.
+ *
+ *	RETURNS:
+ *	IRQ_NONE or IRQ_HANDLED.
+ */
+irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance)
+{
+	return __ata_sff_interrupt(irq, dev_instance, ata_bmdma_port_intr);
+}
+EXPORT_SYMBOL_GPL(ata_bmdma_interrupt);
+
+/**
  *	ata_bmdma_error_handler - Stock error handler for BMDMA controller
  *	@ap: port to handle error for
  *
@@ -2848,7 +2892,8 @@
 		/* if we're gonna thaw, make sure IRQ is clear */
 		if (thaw) {
 			ap->ops->sff_check_status(ap);
-			ap->ops->sff_irq_clear(ap);
+			if (ap->ops->sff_irq_clear)
+				ap->ops->sff_irq_clear(ap);
 		}
 	}
 
@@ -2882,6 +2927,28 @@
 EXPORT_SYMBOL_GPL(ata_bmdma_post_internal_cmd);
 
 /**
+ *	ata_bmdma_irq_clear - Clear PCI IDE BMDMA interrupt.
+ *	@ap: Port associated with this ATA transaction.
+ *
+ *	Clear interrupt and error flags in DMA status register.
+ *
+ *	May be used as the irq_clear() entry in ata_port_operations.
+ *
+ *	LOCKING:
+ *	spin_lock_irqsave(host lock)
+ */
+void ata_bmdma_irq_clear(struct ata_port *ap)
+{
+	void __iomem *mmio = ap->ioaddr.bmdma_addr;
+
+	if (!mmio)
+		return;
+
+	iowrite8(ioread8(mmio + ATA_DMA_STATUS), mmio + ATA_DMA_STATUS);
+}
+EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear);
+
+/**
  *	ata_bmdma_setup - Set up PCI IDE BMDMA transaction
  *	@qc: Info associated with this ATA transaction.
  *
@@ -3137,7 +3204,100 @@
 }
 EXPORT_SYMBOL_GPL(ata_pci_bmdma_init);
 
+/**
+ *	ata_pci_bmdma_prepare_host - helper to prepare PCI BMDMA ATA host
+ *	@pdev: target PCI device
+ *	@ppi: array of port_info, must be enough for two ports
+ *	@r_host: out argument for the initialized ATA host
+ *
+ *	Helper to allocate BMDMA ATA host for @pdev, acquire all PCI
+ *	resources and initialize it accordingly in one go.
+ *
+ *	LOCKING:
+ *	Inherited from calling layer (may sleep).
+ *
+ *	RETURNS:
+ *	0 on success, -errno otherwise.
+ */
+int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
+			       const struct ata_port_info * const * ppi,
+			       struct ata_host **r_host)
+{
+	int rc;
+
+	rc = ata_pci_sff_prepare_host(pdev, ppi, r_host);
+	if (rc)
+		return rc;
+
+	ata_pci_bmdma_init(*r_host);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ata_pci_bmdma_prepare_host);
+
+/**
+ *	ata_pci_bmdma_init_one - Initialize/register BMDMA PCI IDE controller
+ *	@pdev: Controller to be initialized
+ *	@ppi: array of port_info, must be enough for two ports
+ *	@sht: scsi_host_template to use when registering the host
+ *	@host_priv: host private_data
+ *	@hflags: host flags
+ *
+ *	This function is similar to ata_pci_sff_init_one() but also
+ *	takes care of BMDMA initialization.
+ *
+ *	LOCKING:
+ *	Inherited from PCI layer (may sleep).
+ *
+ *	RETURNS:
+ *	Zero on success, negative on errno-based value on error.
+ */
+int ata_pci_bmdma_init_one(struct pci_dev *pdev,
+			   const struct ata_port_info * const * ppi,
+			   struct scsi_host_template *sht, void *host_priv,
+			   int hflags)
+{
+	struct device *dev = &pdev->dev;
+	const struct ata_port_info *pi;
+	struct ata_host *host = NULL;
+	int rc;
+
+	DPRINTK("ENTER\n");
+
+	pi = ata_sff_find_valid_pi(ppi);
+	if (!pi) {
+		dev_printk(KERN_ERR, &pdev->dev,
+			   "no valid port_info specified\n");
+		return -EINVAL;
+	}
+
+	if (!devres_open_group(dev, NULL, GFP_KERNEL))
+		return -ENOMEM;
+
+	rc = pcim_enable_device(pdev);
+	if (rc)
+		goto out;
+
+	/* prepare and activate BMDMA host */
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
+	if (rc)
+		goto out;
+	host->private_data = host_priv;
+	host->flags |= hflags;
+
+	pci_set_master(pdev);
+	rc = ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht);
+ out:
+	if (rc == 0)
+		devres_remove_group(&pdev->dev, NULL);
+	else
+		devres_release_group(&pdev->dev, NULL);
+
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ata_pci_bmdma_init_one);
+
 #endif /* CONFIG_PCI */
+#endif /* CONFIG_ATA_BMDMA */
 
 /**
  *	ata_sff_port_init - Initialize SFF/BMDMA ATA port
diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c
index 066b9f3..c8d4703 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -260,7 +260,7 @@
 			return rc;
 		pcim_pin_device(pdev);
 	}
-	return ata_pci_sff_init_one(pdev, ppi, &pacpi_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &pacpi_sht, NULL, 0);
 }
 
 static const struct pci_device_id pacpi_pci_tbl[] = {
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index f306e10..794ec6e 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -583,7 +583,10 @@
 	        	ppi[0] = &info_20_udma;
 	}
 
-	return ata_pci_sff_init_one(pdev, ppi, &ali_sht, NULL, 0);
+	if (!ppi[0]->mwdma_mask && !ppi[0]->udma_mask)
+		return ata_pci_sff_init_one(pdev, ppi, &ali_sht, NULL, 0);
+	else
+		return ata_pci_bmdma_init_one(pdev, ppi, &ali_sht, NULL, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index d95eca9..620a07c 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -574,7 +574,7 @@
 	}
 
 	/* And fire it up */
-	return ata_pci_sff_init_one(pdev, ppi, &amd_sht, hpriv, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &amd_sht, hpriv, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_artop.c b/drivers/ata/pata_artop.c
index 4d066d6..ba43f0f 100644
--- a/drivers/ata/pata_artop.c
+++ b/drivers/ata/pata_artop.c
@@ -421,7 +421,7 @@
 
 	BUG_ON(ppi[0] == NULL);
 
-	return ata_pci_sff_init_one(pdev, ppi, &artop_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &artop_sht, NULL, 0);
 }
 
 static const struct pci_device_id artop_pci_tbl[] = {
diff --git a/drivers/ata/pata_atiixp.c b/drivers/ata/pata_atiixp.c
index 44d88b3..4375561 100644
--- a/drivers/ata/pata_atiixp.c
+++ b/drivers/ata/pata_atiixp.c
@@ -246,8 +246,8 @@
 		if (!pci_test_config_bits(pdev, &atiixp_enable_bits[i]))
 			ppi[i] = &ata_dummy_port_info;
 
-	return ata_pci_sff_init_one(pdev, ppi, &atiixp_sht, NULL,
-						ATA_HOST_PARALLEL_SCAN);
+	return ata_pci_bmdma_init_one(pdev, ppi, &atiixp_sht, NULL,
+				      ATA_HOST_PARALLEL_SCAN);
 }
 
 static const struct pci_device_id atiixp[] = {
diff --git a/drivers/ata/pata_atp867x.c b/drivers/ata/pata_atp867x.c
index bb6e074..9529593 100644
--- a/drivers/ata/pata_atp867x.c
+++ b/drivers/ata/pata_atp867x.c
@@ -525,7 +525,7 @@
 
 	pci_set_master(pdev);
 
-	rc = ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	rc = ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				IRQF_SHARED, &atp867x_sht);
 	if (rc)
 		dev_printk(KERN_ERR, &pdev->dev, "failed to activate host\n");
diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index 6422cfd..9cae65d 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -1214,7 +1214,7 @@
  *	bfin_irq_clear - Clear ATAPI interrupt.
  *	@ap: Port associated with this ATA transaction.
  *
- *	Note: Original code is ata_sff_irq_clear().
+ *	Note: Original code is ata_bmdma_irq_clear().
  */
 
 static void bfin_irq_clear(struct ata_port *ap)
diff --git a/drivers/ata/pata_cmd64x.c b/drivers/ata/pata_cmd64x.c
index 4c81a71..9f5da1c 100644
--- a/drivers/ata/pata_cmd64x.c
+++ b/drivers/ata/pata_cmd64x.c
@@ -367,7 +367,7 @@
 	pci_write_config_byte(pdev, UDIDETCR0, 0xF0);
 #endif
 
-	return ata_pci_sff_init_one(pdev, ppi, &cmd64x_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &cmd64x_sht, NULL, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c
index 17c5f34..030952f 100644
--- a/drivers/ata/pata_cs5520.c
+++ b/drivers/ata/pata_cs5520.c
@@ -221,7 +221,7 @@
 			continue;
 
 		rc = devm_request_irq(&pdev->dev, irq[ap->port_no],
-				      ata_sff_interrupt, 0, DRV_NAME, host);
+				      ata_bmdma_interrupt, 0, DRV_NAME, host);
 		if (rc)
 			return rc;
 
diff --git a/drivers/ata/pata_cs5530.c b/drivers/ata/pata_cs5530.c
index e809a42..f792330 100644
--- a/drivers/ata/pata_cs5530.c
+++ b/drivers/ata/pata_cs5530.c
@@ -324,7 +324,7 @@
 		ppi[1] = &info_palmax_secondary;
 
 	/* Now kick off ATA set up */
-	return ata_pci_sff_init_one(pdev, ppi, &cs5530_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &cs5530_sht, NULL, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_cs5535.c b/drivers/ata/pata_cs5535.c
index a02e645..03a9318 100644
--- a/drivers/ata/pata_cs5535.c
+++ b/drivers/ata/pata_cs5535.c
@@ -198,7 +198,7 @@
 	rdmsr(ATAC_CH0D1_PIO, timings, dummy);
 	if (CS5535_BAD_PIO(timings))
 		wrmsr(ATAC_CH0D1_PIO, 0xF7F4F7F4UL, 0);
-	return ata_pci_sff_init_one(dev, ppi, &cs5535_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &cs5535_sht, NULL, 0);
 }
 
 static const struct pci_device_id cs5535[] = {
diff --git a/drivers/ata/pata_cs5536.c b/drivers/ata/pata_cs5536.c
index 914ae35..21ee23f 100644
--- a/drivers/ata/pata_cs5536.c
+++ b/drivers/ata/pata_cs5536.c
@@ -260,7 +260,7 @@
 		return -ENODEV;
 	}
 
-	return ata_pci_sff_init_one(dev, ppi, &cs5536_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &cs5536_sht, NULL, 0);
 }
 
 static const struct pci_device_id cs5536[] = {
diff --git a/drivers/ata/pata_cypress.c b/drivers/ata/pata_cypress.c
index 0fcc096..6d915b0 100644
--- a/drivers/ata/pata_cypress.c
+++ b/drivers/ata/pata_cypress.c
@@ -138,7 +138,7 @@
 	if (PCI_FUNC(pdev->devfn) != 1)
 		return -ENODEV;
 
-	return ata_pci_sff_init_one(pdev, ppi, &cy82c693_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &cy82c693_sht, NULL, 0);
 }
 
 static const struct pci_device_id cy82c693[] = {
diff --git a/drivers/ata/pata_efar.c b/drivers/ata/pata_efar.c
index 3bac0e0..a088347 100644
--- a/drivers/ata/pata_efar.c
+++ b/drivers/ata/pata_efar.c
@@ -277,8 +277,8 @@
 		dev_printk(KERN_DEBUG, &pdev->dev,
 			   "version " DRV_VERSION "\n");
 
-	return ata_pci_sff_init_one(pdev, ppi, &efar_sht, NULL,
-					ATA_HOST_PARALLEL_SCAN);
+	return ata_pci_bmdma_init_one(pdev, ppi, &efar_sht, NULL,
+				      ATA_HOST_PARALLEL_SCAN);
 }
 
 static const struct pci_device_id efar_pci_tbl[] = {
diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
index 8580eb3..7688868 100644
--- a/drivers/ata/pata_hpt366.c
+++ b/drivers/ata/pata_hpt366.c
@@ -361,7 +361,7 @@
 			break;
 	}
 	/* Now kick off ATA set up */
-	return ata_pci_sff_init_one(dev, ppi, &hpt36x_sht, hpriv, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, hpriv, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 98b498b..9ae4c08 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -987,7 +987,7 @@
 	}
 
 	/* Now kick off ATA set up */
-	return ata_pci_sff_init_one(dev, ppi, &hpt37x_sht, private_data, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &hpt37x_sht, private_data, 0);
 }
 
 static const struct pci_device_id hpt37x[] = {
diff --git a/drivers/ata/pata_hpt3x2n.c b/drivers/ata/pata_hpt3x2n.c
index 8b95aeb..32f3463 100644
--- a/drivers/ata/pata_hpt3x2n.c
+++ b/drivers/ata/pata_hpt3x2n.c
@@ -548,7 +548,7 @@
 		outb(inb(iobase + 0x9c) | 0x04, iobase + 0x9c);
 
 	/* Now kick off ATA set up */
-	return ata_pci_sff_init_one(dev, ppi, &hpt3x2n_sht, hpriv, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &hpt3x2n_sht, hpriv, 0);
 }
 
 static const struct pci_device_id hpt3x2n[] = {
diff --git a/drivers/ata/pata_hpt3x3.c b/drivers/ata/pata_hpt3x3.c
index 727a81c..b63d5e2 100644
--- a/drivers/ata/pata_hpt3x3.c
+++ b/drivers/ata/pata_hpt3x3.c
@@ -248,7 +248,7 @@
 		ata_port_pbar_desc(ap, 4, offset_cmd[i], "cmd");
 	}
 	pci_set_master(pdev);
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &hpt3x3_sht);
 }
 
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c
index b56e8f7..9f2889f 100644
--- a/drivers/ata/pata_icside.c
+++ b/drivers/ata/pata_icside.c
@@ -470,7 +470,7 @@
 		pata_icside_setup_ioaddr(ap, info->base, info, info->port[i]);
 	}
 
-	return ata_host_activate(host, ec->irq, ata_sff_interrupt, 0,
+	return ata_host_activate(host, ec->irq, ata_bmdma_interrupt, 0,
 				 &pata_icside_sht);
 }
 
diff --git a/drivers/ata/pata_it8213.c b/drivers/ata/pata_it8213.c
index f971f0d..4d142a2 100644
--- a/drivers/ata/pata_it8213.c
+++ b/drivers/ata/pata_it8213.c
@@ -273,7 +273,7 @@
 		dev_printk(KERN_DEBUG, &pdev->dev,
 			   "version " DRV_VERSION "\n");
 
-	return ata_pci_sff_init_one(pdev, ppi, &it8213_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &it8213_sht, NULL, 0);
 }
 
 static const struct pci_device_id it8213_pci_tbl[] = {
diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index 2bd2b00..bf88f71 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -933,7 +933,7 @@
 		else
 			ppi[0] = &info_smart;
 	}
-	return ata_pci_sff_init_one(pdev, ppi, &it821x_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &it821x_sht, NULL, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_jmicron.c b/drivers/ata/pata_jmicron.c
index 565e01e..cb3babb 100644
--- a/drivers/ata/pata_jmicron.c
+++ b/drivers/ata/pata_jmicron.c
@@ -144,7 +144,7 @@
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };
 
-	return ata_pci_sff_init_one(pdev, ppi, &jmicron_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &jmicron_sht, NULL, 0);
 }
 
 static const struct pci_device_id jmicron_pci_tbl[] = {
diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index b5b48e7..76640ac 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -1110,7 +1110,7 @@
 
 	/* Start it up */
 	priv->irq = irq;
-	return ata_host_activate(priv->host, irq, ata_sff_interrupt, 0,
+	return ata_host_activate(priv->host, irq, ata_bmdma_interrupt, 0,
 				 &pata_macio_sht);
 }
 
diff --git a/drivers/ata/pata_marvell.c b/drivers/ata/pata_marvell.c
index e8ca02e..dd38083 100644
--- a/drivers/ata/pata_marvell.c
+++ b/drivers/ata/pata_marvell.c
@@ -153,7 +153,7 @@
 		return -ENODEV;
 	}
 #endif
-	return ata_pci_sff_init_one(pdev, ppi, &marvell_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &marvell_sht, NULL, 0);
 }
 
 static const struct pci_device_id marvell_pci_tbl[] = {
diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c
index 36afe2c..f087ab5 100644
--- a/drivers/ata/pata_mpc52xx.c
+++ b/drivers/ata/pata_mpc52xx.c
@@ -659,7 +659,7 @@
 	ata_port_desc(ap, "ata_regs 0x%lx", raw_ata_regs);
 
 	/* activate host */
-	return ata_host_activate(host, priv->ata_irq, ata_sff_interrupt, 0,
+	return ata_host_activate(host, priv->ata_irq, ata_bmdma_interrupt, 0,
 				 &mpc52xx_ata_sht);
 }
 
diff --git a/drivers/ata/pata_netcell.c b/drivers/ata/pata_netcell.c
index 94f979a..3eb921c 100644
--- a/drivers/ata/pata_netcell.c
+++ b/drivers/ata/pata_netcell.c
@@ -82,7 +82,7 @@
 	ata_pci_bmdma_clear_simplex(pdev);
 
 	/* And let the library code do the work */
-	return ata_pci_sff_init_one(pdev, port_info, &netcell_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
 }
 
 static const struct pci_device_id netcell_pci_tbl[] = {
diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c
index dd53a66..cc50bd0 100644
--- a/drivers/ata/pata_ninja32.c
+++ b/drivers/ata/pata_ninja32.c
@@ -149,7 +149,7 @@
 
 	ninja32_program(base);
 	/* FIXME: Should we disable them at remove ? */
-	return ata_host_activate(host, dev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, dev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &ninja32_sht);
 }
 
diff --git a/drivers/ata/pata_ns87415.c b/drivers/ata/pata_ns87415.c
index fdbba2d..605f198 100644
--- a/drivers/ata/pata_ns87415.c
+++ b/drivers/ata/pata_ns87415.c
@@ -380,7 +380,7 @@
 
 	ns87415_fixup(pdev);
 
-	return ata_pci_sff_init_one(pdev, ppi, &ns87415_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &ns87415_sht, NULL, 0);
 }
 
 static const struct pci_device_id ns87415_pci_tbl[] = {
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index 3001109..06ddd91 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -750,20 +750,6 @@
 }
 
 /*
- * Trap if driver tries to do standard bmdma commands.  They are not
- * supported.
- */
-static void unreachable_qc(struct ata_queued_cmd *qc)
-{
-	BUG();
-}
-
-static u8 unreachable_port(struct ata_port *ap)
-{
-	BUG();
-}
-
-/*
  * We don't do ATAPI DMA so return 0.
  */
 static int octeon_cf_check_atapi_dma(struct ata_queued_cmd *qc)
@@ -804,10 +790,6 @@
 	.sff_dev_select		= octeon_cf_dev_select,
 	.sff_irq_on		= octeon_cf_irq_on,
 	.sff_irq_clear		= octeon_cf_irq_clear,
-	.bmdma_setup		= unreachable_qc,
-	.bmdma_start		= unreachable_qc,
-	.bmdma_stop		= unreachable_qc,
-	.bmdma_status		= unreachable_port,
 	.cable_detect		= ata_cable_40wire,
 	.set_piomode		= octeon_cf_set_piomode,
 	.set_dmamode		= octeon_cf_set_dmamode,
diff --git a/drivers/ata/pata_oldpiix.c b/drivers/ata/pata_oldpiix.c
index 988ef26..b811c16 100644
--- a/drivers/ata/pata_oldpiix.c
+++ b/drivers/ata/pata_oldpiix.c
@@ -248,7 +248,7 @@
 		dev_printk(KERN_DEBUG, &pdev->dev,
 			   "version " DRV_VERSION "\n");
 
-	return ata_pci_sff_init_one(pdev, ppi, &oldpiix_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &oldpiix_sht, NULL, 0);
 }
 
 static const struct pci_device_id oldpiix_pci_tbl[] = {
diff --git a/drivers/ata/pata_optidma.c b/drivers/ata/pata_optidma.c
index 76b7d12..0852cd0 100644
--- a/drivers/ata/pata_optidma.c
+++ b/drivers/ata/pata_optidma.c
@@ -429,7 +429,7 @@
 	if (optiplus_with_udma(dev))
 		ppi[0] = &info_82c700_udma;
 
-	return ata_pci_sff_init_one(dev, ppi, &optidma_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &optidma_sht, NULL, 0);
 }
 
 static const struct pci_device_id optidma[] = {
diff --git a/drivers/ata/pata_pdc2027x.c b/drivers/ata/pata_pdc2027x.c
index 09f1f22..b183511 100644
--- a/drivers/ata/pata_pdc2027x.c
+++ b/drivers/ata/pata_pdc2027x.c
@@ -754,7 +754,7 @@
 		return -EIO;
 
 	pci_set_master(pdev);
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &pdc2027x_sht);
 }
 
diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c
index fa1e2f3..c39f213 100644
--- a/drivers/ata/pata_pdc202xx_old.c
+++ b/drivers/ata/pata_pdc202xx_old.c
@@ -337,7 +337,7 @@
 				return -ENODEV;
 		}
 	}
-	return ata_pci_sff_init_one(dev, ppi, &pdc202xx_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &pdc202xx_sht, NULL, 0);
 }
 
 static const struct pci_device_id pdc202xx[] = {
diff --git a/drivers/ata/pata_piccolo.c b/drivers/ata/pata_piccolo.c
index 9816154..cb01bf9 100644
--- a/drivers/ata/pata_piccolo.c
+++ b/drivers/ata/pata_piccolo.c
@@ -95,7 +95,7 @@
 	};
 	const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
 	/* Just one port for the moment */
-	return ata_pci_sff_init_one(dev, ppi, &tosh_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &tosh_sht, NULL, 0);
 }
 
 static struct pci_device_id ata_tosh[] = {
diff --git a/drivers/ata/pata_radisys.c b/drivers/ata/pata_radisys.c
index a5fa388..8574b31 100644
--- a/drivers/ata/pata_radisys.c
+++ b/drivers/ata/pata_radisys.c
@@ -227,7 +227,7 @@
 		dev_printk(KERN_DEBUG, &pdev->dev,
 			   "version " DRV_VERSION "\n");
 
-	return ata_pci_sff_init_one(pdev, ppi, &radisys_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &radisys_sht, NULL, 0);
 }
 
 static const struct pci_device_id radisys_pci_tbl[] = {
diff --git a/drivers/ata/pata_rdc.c b/drivers/ata/pata_rdc.c
index 37092cf..5fbe9b1 100644
--- a/drivers/ata/pata_rdc.c
+++ b/drivers/ata/pata_rdc.c
@@ -344,7 +344,7 @@
 	 */
 	pci_read_config_dword(pdev, 0x54, &hpriv->saved_iocfg);
 
-	rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
 	if (rc)
 		return rc;
 	host->private_data = hpriv;
@@ -354,7 +354,7 @@
 	host->flags |= ATA_HOST_PARALLEL_SCAN;
 
 	pci_set_master(pdev);
-	return ata_pci_sff_activate_host(host, ata_sff_interrupt, &rdc_sht);
+	return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, &rdc_sht);
 }
 
 static void rdc_remove_one(struct pci_dev *pdev)
diff --git a/drivers/ata/pata_sc1200.c b/drivers/ata/pata_sc1200.c
index 6b5b63a..e2c1825 100644
--- a/drivers/ata/pata_sc1200.c
+++ b/drivers/ata/pata_sc1200.c
@@ -237,7 +237,7 @@
 	};
 	const struct ata_port_info *ppi[] = { &info, NULL };
 
-	return ata_pci_sff_init_one(dev, ppi, &sc1200_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &sc1200_sht, NULL, 0);
 }
 
 static const struct pci_device_id sc1200[] = {
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c
index 6f6193b..d9db3f8 100644
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -875,7 +875,7 @@
  *	scc_irq_clear - Clear PCI IDE BMDMA interrupt.
  *	@ap: Port associated with this ATA transaction.
  *
- *	Note: Original code is ata_sff_irq_clear().
+ *	Note: Original code is ata_bmdma_irq_clear().
  */
 
 static void scc_irq_clear (struct ata_port *ap)
@@ -1105,7 +1105,7 @@
 	if (rc)
 		return rc;
 
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &scc_sht);
 }
 
diff --git a/drivers/ata/pata_sch.c b/drivers/ata/pata_sch.c
index 86b3d01..e97b32f 100644
--- a/drivers/ata/pata_sch.c
+++ b/drivers/ata/pata_sch.c
@@ -179,7 +179,7 @@
 		dev_printk(KERN_DEBUG, &pdev->dev,
 			   "version " DRV_VERSION "\n");
 
-	return ata_pci_sff_init_one(pdev, ppi, &sch_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &sch_sht, NULL, 0);
 }
 
 static int __init sch_init(void)
diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c
index 43ea389..86dd714e 100644
--- a/drivers/ata/pata_serverworks.c
+++ b/drivers/ata/pata_serverworks.c
@@ -460,7 +460,7 @@
 	if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)
 		ata_pci_bmdma_clear_simplex(pdev);
 
-	return ata_pci_sff_init_one(pdev, ppi, &serverworks_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &serverworks_sht, NULL, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_sil680.c b/drivers/ata/pata_sil680.c
index 43faf10..d3190d7 100644
--- a/drivers/ata/pata_sil680.c
+++ b/drivers/ata/pata_sil680.c
@@ -374,11 +374,11 @@
 	ata_sff_std_ports(&host->ports[1]->ioaddr);
 
 	/* Register & activate */
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &sil680_sht);
 
 use_ioports:
-	return ata_pci_sff_init_one(pdev, ppi, &sil680_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &sil680_sht, NULL, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index b670803..60cea13 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -826,7 +826,7 @@
 
 	sis_fixup(pdev, chipset);
 
-	return ata_pci_sff_init_one(pdev, ppi, &sis_sht, chipset, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &sis_sht, chipset, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/pata_sl82c105.c b/drivers/ata/pata_sl82c105.c
index 733b042..98548f6 100644
--- a/drivers/ata/pata_sl82c105.c
+++ b/drivers/ata/pata_sl82c105.c
@@ -316,7 +316,7 @@
 	val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16;
 	pci_write_config_dword(dev, 0x40, val);
 
-	return ata_pci_sff_init_one(dev, ppi, &sl82c105_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &sl82c105_sht, NULL, 0);
 }
 
 static const struct pci_device_id sl82c105[] = {
diff --git a/drivers/ata/pata_triflex.c b/drivers/ata/pata_triflex.c
index 48f5060..0d1f89e 100644
--- a/drivers/ata/pata_triflex.c
+++ b/drivers/ata/pata_triflex.c
@@ -201,7 +201,7 @@
 	if (!printed_version++)
 		dev_printk(KERN_DEBUG, &dev->dev, "version " DRV_VERSION "\n");
 
-	return ata_pci_sff_init_one(dev, ppi, &triflex_sht, NULL, 0);
+	return ata_pci_bmdma_init_one(dev, ppi, &triflex_sht, NULL, 0);
 }
 
 static const struct pci_device_id triflex[] = {
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index 7e3e0a5..5e65988 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -627,7 +627,7 @@
 	}
 
 	/* We have established the device type, now fire it up */
-	return ata_pci_sff_init_one(pdev, ppi, &via_sht, (void *)config, 0);
+	return ata_pci_bmdma_init_one(pdev, ppi, &via_sht, (void *)config, 0);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index f3471bc..a476cd9 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -675,8 +675,6 @@
 	.freeze			= mv_eh_freeze,
 	.thaw			= mv_eh_thaw,
 	.hardreset		= mv_hardreset,
-	.error_handler		= ata_std_error_handler, /* avoid SFF EH */
-	.post_internal_cmd	= ATA_OP_NULL,
 
 	.scr_read		= mv5_scr_read,
 	.scr_write		= mv5_scr_write,
@@ -2813,7 +2811,7 @@
 	} else if (!edma_was_enabled) {
 		struct ata_queued_cmd *qc = mv_get_active_qc(ap);
 		if (qc)
-			ata_sff_host_intr(ap, qc);
+			ata_bmdma_port_intr(ap, qc);
 		else
 			mv_unexpected_intr(ap, edma_was_enabled);
 	}
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index baa8f0d..6fd1147 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -920,7 +920,7 @@
 	}
 
 	/* handle interrupt */
-	return ata_sff_host_intr(ap, qc);
+	return ata_bmdma_port_intr(ap, qc);
 }
 
 static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
@@ -1100,7 +1100,7 @@
 	u32 notifier_clears[2];
 
 	if (pp->flags & NV_ADMA_ATAPI_SETUP_COMPLETE) {
-		ata_sff_irq_clear(ap);
+		ata_bmdma_irq_clear(ap);
 		return;
 	}
 
@@ -1505,7 +1505,7 @@
 
 		qc = ata_qc_from_tag(ap, ap->link.active_tag);
 		if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
-			handled += ata_sff_host_intr(ap, qc);
+			handled += ata_bmdma_port_intr(ap, qc);
 		} else {
 			/*
 			 * No request pending?  Clear interrupt status
@@ -2430,7 +2430,7 @@
 
 	ppi[0] = &nv_port_info[type];
 	ipriv = ppi[0]->private_data;
-	rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
 	if (rc)
 		return rc;
 
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c
index d533b3d..daeebf1 100644
--- a/drivers/ata/sata_qstor.c
+++ b/drivers/ata/sata_qstor.c
@@ -120,8 +120,6 @@
 static void qs_qc_prep(struct ata_queued_cmd *qc);
 static unsigned int qs_qc_issue(struct ata_queued_cmd *qc);
 static int qs_check_atapi_dma(struct ata_queued_cmd *qc);
-static void qs_bmdma_stop(struct ata_queued_cmd *qc);
-static u8 qs_bmdma_status(struct ata_port *ap);
 static void qs_freeze(struct ata_port *ap);
 static void qs_thaw(struct ata_port *ap);
 static int qs_prereset(struct ata_link *link, unsigned long deadline);
@@ -137,8 +135,6 @@
 	.inherits		= &ata_sff_port_ops,
 
 	.check_atapi_dma	= qs_check_atapi_dma,
-	.bmdma_stop		= qs_bmdma_stop,
-	.bmdma_status		= qs_bmdma_status,
 	.qc_prep		= qs_qc_prep,
 	.qc_issue		= qs_qc_issue,
 
@@ -190,16 +186,6 @@
 	return 1;	/* ATAPI DMA not supported */
 }
 
-static void qs_bmdma_stop(struct ata_queued_cmd *qc)
-{
-	/* nothing */
-}
-
-static u8 qs_bmdma_status(struct ata_port *ap)
-{
-	return 0;
-}
-
 static inline void qs_enter_reg_mode(struct ata_port *ap)
 {
 	u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000);
@@ -454,7 +440,7 @@
 		if (!pp || pp->state != qs_state_mmio)
 			continue;
 		if (!(qc->tf.flags & ATA_TFLAG_POLLING))
-			handled |= ata_sff_host_intr(ap, qc);
+			handled |= ata_sff_port_intr(ap, qc);
 	}
 	return handled;
 }
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c
index 2dda312..3a4f842 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -503,7 +503,7 @@
 		goto err_hsm;
 
 	/* ack bmdma irq events */
-	ata_sff_irq_clear(ap);
+	ata_bmdma_irq_clear(ap);
 
 	/* kick HSM in the ass */
 	ata_sff_hsm_move(ap, qc, status, 0);
@@ -584,7 +584,7 @@
 
 	/* clear IRQ */
 	ap->ops->sff_check_status(ap);
-	ata_sff_irq_clear(ap);
+	ata_bmdma_irq_clear(ap);
 
 	/* turn on SATA IRQ if supported */
 	if (!(ap->flags & SIL_FLAG_NO_SATA_IRQ))
diff --git a/drivers/ata/sata_sis.c b/drivers/ata/sata_sis.c
index f8a91bf..2bfe3ae 100644
--- a/drivers/ata/sata_sis.c
+++ b/drivers/ata/sata_sis.c
@@ -279,7 +279,7 @@
 		break;
 	}
 
-	rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
 	if (rc)
 		return rc;
 
@@ -308,7 +308,7 @@
 
 	pci_set_master(pdev);
 	pci_intx(pdev, 1);
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &sis_sht);
 }
 
diff --git a/drivers/ata/sata_svw.c b/drivers/ata/sata_svw.c
index 101fd6a..7d9db4a 100644
--- a/drivers/ata/sata_svw.c
+++ b/drivers/ata/sata_svw.c
@@ -502,7 +502,7 @@
 	writel(0x0, mmio_base + K2_SATA_SIM_OFFSET);
 
 	pci_set_master(pdev);
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &k2_sata_sht);
 }
 
diff --git a/drivers/ata/sata_uli.c b/drivers/ata/sata_uli.c
index d8dac17..b8578c3 100644
--- a/drivers/ata/sata_uli.c
+++ b/drivers/ata/sata_uli.c
@@ -242,7 +242,7 @@
 
 	pci_set_master(pdev);
 	pci_intx(pdev, 1);
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &uli_sht);
 }
 
diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
index 08f6549..101d8c2 100644
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -308,7 +308,7 @@
 	 * certain way.  Leave it alone and just clear pending IRQ.
 	 */
 	ap->ops->sff_check_status(ap);
-	ata_sff_irq_clear(ap);
+	ata_bmdma_irq_clear(ap);
 }
 
 /**
@@ -463,7 +463,7 @@
 	struct ata_host *host;
 	int rc;
 
-	rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
 	if (rc)
 		return rc;
 	*r_host = host;
@@ -520,7 +520,7 @@
 	struct ata_host *host;
 	int i, rc;
 
-	rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
+	rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
 	if (rc)
 		return rc;
 	*r_host = host;
@@ -628,7 +628,7 @@
 	svia_configure(pdev);
 
 	pci_set_master(pdev);
-	return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
+	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,
 				 IRQF_SHARED, &svia_sht);
 }
 
diff --git a/drivers/ata/sata_vsc.c b/drivers/ata/sata_vsc.c
index 2107952..b777176 100644
--- a/drivers/ata/sata_vsc.c
+++ b/drivers/ata/sata_vsc.c
@@ -245,7 +245,7 @@
 
 	qc = ata_qc_from_tag(ap, ap->link.active_tag);
 	if (qc && likely(!(qc->tf.flags & ATA_TFLAG_POLLING)))
-		handled = ata_sff_host_intr(ap, qc);
+		handled = ata_bmdma_port_intr(ap, qc);
 
 	/* We received an interrupt during a polled command,
 	 * or some other spurious condition.  Interrupt reporting
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index bf6b132..9fc630c 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -162,7 +162,7 @@
 		topology_remove_dev(cpu);
 		break;
 	}
-	return rc ? NOTIFY_BAD : NOTIFY_OK;
+	return notifier_from_errno(rc);
 }
 
 static int __cpuinit topology_sysfs_init(void)
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index e21175b..f09fc0e 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -1121,5 +1121,12 @@
 
 source "drivers/s390/char/Kconfig"
 
+config RAMOOPS
+	tristate "Log panic/oops to a RAM buffer"
+	default n
+	help
+	  This enables panic and oops messages to be logged to a circular
+	  buffer in RAM where it can be read back at some later point.
+
 endmenu
 
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index d39be4c..88d6eac 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -108,6 +108,7 @@
 obj-$(CONFIG_TCG_TPM)		+= tpm/
 
 obj-$(CONFIG_PS3_FLASH)		+= ps3flash.o
+obj-$(CONFIG_RAMOOPS)		+= ramoops.o
 
 obj-$(CONFIG_JS_RTC)		+= js-rtc.o
 js-rtc-y = rtc.o
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 67ea3a6..70312da 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -384,7 +384,7 @@
 {
 	u32 httfea,baseaddr,enuscr;
 	struct pci_dev *dev1;
-	int i;
+	int i, ret;
 	unsigned size = amd64_fetch_size();
 
 	dev_info(&pdev->dev, "setting up ULi AGP\n");
@@ -400,15 +400,18 @@
 
 	if (i == ARRAY_SIZE(uli_sizes)) {
 		dev_info(&pdev->dev, "no ULi size found for %d\n", size);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto put;
 	}
 
 	/* shadow x86-64 registers into ULi registers */
 	pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &httfea);
 
 	/* if x86-64 aperture base is beyond 4G, exit here */
-	if ((httfea & 0x7fff) >> (32 - 25))
-		return -ENODEV;
+	if ((httfea & 0x7fff) >> (32 - 25)) {
+		ret = -ENODEV;
+		goto put;
+	}
 
 	httfea = (httfea& 0x7fff) << 25;
 
@@ -420,9 +423,10 @@
 	enuscr= httfea+ (size * 1024 * 1024) - 1;
 	pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea);
 	pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr);
-
+	ret = 0;
+put:
 	pci_dev_put(dev1);
-	return 0;
+	return ret;
 }
 
 
@@ -441,7 +445,7 @@
 {
 	u32 tmp, apbase, apbar, aplimit;
 	struct pci_dev *dev1;
-	int i;
+	int i, ret;
 	unsigned size = amd64_fetch_size();
 
 	dev_info(&pdev->dev, "setting up Nforce3 AGP\n");
@@ -458,7 +462,8 @@
 
 	if (i == ARRAY_SIZE(nforce3_sizes)) {
 		dev_info(&pdev->dev, "no NForce3 size found for %d\n", size);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto put;
 	}
 
 	pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp);
@@ -472,7 +477,8 @@
 	/* if x86-64 aperture base is beyond 4G, exit here */
 	if ( (apbase & 0x7fff) >> (32 - 25) ) {
 		dev_info(&pdev->dev, "aperture base > 4G\n");
-		return -ENODEV;
+		ret = -ENODEV;
+		goto put;
 	}
 
 	apbase = (apbase & 0x7fff) << 25;
@@ -488,9 +494,11 @@
 	pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase);
 	pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit);
 
+	ret = 0;
+put:
 	pci_dev_put(dev1);
 
-	return 0;
+	return ret;
 }
 
 static int __devinit agp_amd64_probe(struct pci_dev *pdev,
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 56b2767..4f8d60c 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -84,6 +84,7 @@
 #include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/bitops.h>
+#include <linux/platform_device.h>
 
 #include <asm/setup.h>
 
@@ -1954,29 +1955,16 @@
 /*
  * The serial driver boot-time initialization code!
  */
-static int __init rs_init(void)
+static int __init amiga_serial_probe(struct platform_device *pdev)
 {
 	unsigned long flags;
 	struct serial_state * state;
 	int error;
 
-	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_SERIAL))
-		return -ENODEV;
-
 	serial_driver = alloc_tty_driver(1);
 	if (!serial_driver)
 		return -ENOMEM;
 
-	/*
-	 *  We request SERDAT and SERPER only, because the serial registers are
-	 *  too spreaded over the custom register space
-	 */
-	if (!request_mem_region(CUSTOM_PHYSADDR+0x30, 4,
-				"amiserial [Paula]")) {
-		error = -EBUSY;
-		goto fail_put_tty_driver;
-	}
-
 	IRQ_ports = NULL;
 
 	show_serial_version();
@@ -1998,7 +1986,7 @@
 
 	error = tty_register_driver(serial_driver);
 	if (error)
-		goto fail_release_mem_region;
+		goto fail_put_tty_driver;
 
 	state = rs_table;
 	state->magic = SSTATE_MAGIC;
@@ -2050,23 +2038,24 @@
 	ciab.ddra |= (SER_DTR | SER_RTS);   /* outputs */
 	ciab.ddra &= ~(SER_DCD | SER_CTS | SER_DSR);  /* inputs */
 
+	platform_set_drvdata(pdev, state);
+
 	return 0;
 
 fail_free_irq:
 	free_irq(IRQ_AMIGA_TBE, state);
 fail_unregister:
 	tty_unregister_driver(serial_driver);
-fail_release_mem_region:
-	release_mem_region(CUSTOM_PHYSADDR+0x30, 4);
 fail_put_tty_driver:
 	put_tty_driver(serial_driver);
 	return error;
 }
 
-static __exit void rs_exit(void) 
+static int __exit amiga_serial_remove(struct platform_device *pdev)
 {
 	int error;
-	struct async_struct *info = rs_table[0].info;
+	struct serial_state *state = platform_get_drvdata(pdev);
+	struct async_struct *info = state->info;
 
 	/* printk("Unloading %s: version %s\n", serial_name, serial_version); */
 	tasklet_kill(&info->tlet);
@@ -2075,19 +2064,38 @@
 		       error);
 	put_tty_driver(serial_driver);
 
-	if (info) {
-	  rs_table[0].info = NULL;
-	  kfree(info);
-	}
+	rs_table[0].info = NULL;
+	kfree(info);
 
 	free_irq(IRQ_AMIGA_TBE, rs_table);
 	free_irq(IRQ_AMIGA_RBF, rs_table);
 
-	release_mem_region(CUSTOM_PHYSADDR+0x30, 4);
+	platform_set_drvdata(pdev, NULL);
+
+	return error;
 }
 
-module_init(rs_init)
-module_exit(rs_exit)
+static struct platform_driver amiga_serial_driver = {
+	.remove = __exit_p(amiga_serial_remove),
+	.driver   = {
+		.name	= "amiga-serial",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amiga_serial_init(void)
+{
+	return platform_driver_probe(&amiga_serial_driver, amiga_serial_probe);
+}
+
+module_init(amiga_serial_init);
+
+static void __exit amiga_serial_exit(void)
+{
+	platform_driver_unregister(&amiga_serial_driver);
+}
+
+module_exit(amiga_serial_exit);
 
 
 #if defined(CONFIG_SERIAL_CONSOLE) && !defined(MODULE)
@@ -2154,3 +2162,4 @@
 #endif /* CONFIG_SERIAL_CONSOLE && !MODULE */
 
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-serial");
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
index 63313a3..f4ae0e0 100644
--- a/drivers/char/applicom.c
+++ b/drivers/char/applicom.c
@@ -703,14 +703,9 @@
 	/* In general, the device is only openable by root anyway, so we're not
 	   particularly concerned that bogus ioctls can flood the console. */
 
-	adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL);
-	if (!adgl)
-		return -ENOMEM;
-
-	if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) {
-		kfree(adgl);
-		return -EFAULT;
-	}
+	adgl = memdup_user(argp, sizeof(struct st_ram_io));
+	if (IS_ERR(adgl))
+		return PTR_ERR(adgl);
 
 	lock_kernel();	
 	IndexCard = adgl->num_card-1;
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index c6ad423..4f3f8c9 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2505,12 +2505,11 @@
 			return rv;
 		}
 
-		printk(KERN_INFO
-		       "ipmi: Found new BMC (man_id: 0x%6.6x, "
-		       " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
-		       bmc->id.manufacturer_id,
-		       bmc->id.product_id,
-		       bmc->id.device_id);
+		dev_info(intf->si_dev, "Found new BMC (man_id: 0x%6.6x, "
+			 "prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n",
+			 bmc->id.manufacturer_id,
+			 bmc->id.product_id,
+			 bmc->id.device_id);
 	}
 
 	/*
@@ -4037,8 +4036,8 @@
 
 static struct timer_list ipmi_timer;
 
-/* Call every ~100 ms. */
-#define IPMI_TIMEOUT_TIME	100
+/* Call every ~1000 ms. */
+#define IPMI_TIMEOUT_TIME	1000
 
 /* How many jiffies does it take to get to the timeout time. */
 #define IPMI_TIMEOUT_JIFFIES	((IPMI_TIMEOUT_TIME * HZ) / 1000)
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 47ffe4a..35603dd 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -107,6 +107,14 @@
 };
 static char *si_to_str[] = { "kcs", "smic", "bt" };
 
+enum ipmi_addr_src {
+	SI_INVALID = 0, SI_HOTMOD, SI_HARDCODED, SI_SPMI, SI_ACPI, SI_SMBIOS,
+	SI_PCI,	SI_DEVICETREE, SI_DEFAULT
+};
+static char *ipmi_addr_src_to_str[] = { NULL, "hotmod", "hardcoded", "SPMI",
+					"ACPI", "SMBIOS", "PCI",
+					"device-tree", "default" };
+
 #define DEVICE_NAME "ipmi_si"
 
 static struct platform_driver ipmi_driver = {
@@ -188,7 +196,7 @@
 	int (*irq_setup)(struct smi_info *info);
 	void (*irq_cleanup)(struct smi_info *info);
 	unsigned int io_size;
-	char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */
+	enum ipmi_addr_src addr_source; /* ACPI, PCI, SMBIOS, hardcode, etc. */
 	void (*addr_source_cleanup)(struct smi_info *info);
 	void *addr_source_data;
 
@@ -300,6 +308,7 @@
 
 static int unload_when_empty = 1;
 
+static int add_smi(struct smi_info *smi);
 static int try_smi_init(struct smi_info *smi);
 static void cleanup_one_si(struct smi_info *to_clean);
 
@@ -314,9 +323,14 @@
 {
 	/* Deliver the message to the upper layer with the lock
 	   released. */
-	spin_unlock(&(smi_info->si_lock));
-	ipmi_smi_msg_received(smi_info->intf, msg);
-	spin_lock(&(smi_info->si_lock));
+
+	if (smi_info->run_to_completion) {
+		ipmi_smi_msg_received(smi_info->intf, msg);
+	} else {
+		spin_unlock(&(smi_info->si_lock));
+		ipmi_smi_msg_received(smi_info->intf, msg);
+		spin_lock(&(smi_info->si_lock));
+	}
 }
 
 static void return_hosed_msg(struct smi_info *smi_info, int cCode)
@@ -445,6 +459,9 @@
 	if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
 		start_disable_irq(smi_info);
 		smi_info->interrupt_disabled = 1;
+		if (!atomic_read(&smi_info->stop_operation))
+			mod_timer(&smi_info->si_timer,
+				  jiffies + SI_TIMEOUT_JIFFIES);
 	}
 }
 
@@ -576,9 +593,8 @@
 		smi_info->handlers->get_result(smi_info->si_sm, msg, 3);
 		if (msg[2] != 0) {
 			/* Error clearing flags */
-			printk(KERN_WARNING
-			       "ipmi_si: Error clearing flags: %2.2x\n",
-			       msg[2]);
+			dev_warn(smi_info->dev,
+				 "Error clearing flags: %2.2x\n", msg[2]);
 		}
 		if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ)
 			start_enable_irq(smi_info);
@@ -670,9 +686,8 @@
 		/* We got the flags from the SMI, now handle them. */
 		smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
 		if (msg[2] != 0) {
-			printk(KERN_WARNING
-			       "ipmi_si: Could not enable interrupts"
-			       ", failed get, using polled mode.\n");
+			dev_warn(smi_info->dev, "Could not enable interrupts"
+				 ", failed get, using polled mode.\n");
 			smi_info->si_state = SI_NORMAL;
 		} else {
 			msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
@@ -693,11 +708,11 @@
 
 		/* We got the flags from the SMI, now handle them. */
 		smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
-		if (msg[2] != 0) {
-			printk(KERN_WARNING
-			       "ipmi_si: Could not enable interrupts"
-			       ", failed set, using polled mode.\n");
-		}
+		if (msg[2] != 0)
+			dev_warn(smi_info->dev, "Could not enable interrupts"
+				 ", failed set, using polled mode.\n");
+		else
+			smi_info->interrupt_disabled = 0;
 		smi_info->si_state = SI_NORMAL;
 		break;
 	}
@@ -709,9 +724,8 @@
 		/* We got the flags from the SMI, now handle them. */
 		smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
 		if (msg[2] != 0) {
-			printk(KERN_WARNING
-			       "ipmi_si: Could not disable interrupts"
-			       ", failed get.\n");
+			dev_warn(smi_info->dev, "Could not disable interrupts"
+				 ", failed get.\n");
 			smi_info->si_state = SI_NORMAL;
 		} else {
 			msg[0] = (IPMI_NETFN_APP_REQUEST << 2);
@@ -733,9 +747,8 @@
 		/* We got the flags from the SMI, now handle them. */
 		smi_info->handlers->get_result(smi_info->si_sm, msg, 4);
 		if (msg[2] != 0) {
-			printk(KERN_WARNING
-			       "ipmi_si: Could not disable interrupts"
-			       ", failed set.\n");
+			dev_warn(smi_info->dev, "Could not disable interrupts"
+				 ", failed set.\n");
 		}
 		smi_info->si_state = SI_NORMAL;
 		break;
@@ -877,6 +890,11 @@
 	printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec);
 #endif
 
+	mod_timer(&smi_info->si_timer, jiffies + SI_TIMEOUT_JIFFIES);
+
+	if (smi_info->thread)
+		wake_up_process(smi_info->thread);
+
 	if (smi_info->run_to_completion) {
 		/*
 		 * If we are running to completion, then throw it in
@@ -997,6 +1015,8 @@
 			; /* do nothing */
 		else if (smi_result == SI_SM_CALL_WITH_DELAY && busy_wait)
 			schedule();
+		else if (smi_result == SI_SM_IDLE)
+			schedule_timeout_interruptible(100);
 		else
 			schedule_timeout_interruptible(0);
 	}
@@ -1039,6 +1059,7 @@
 	unsigned long     flags;
 	unsigned long     jiffies_now;
 	long              time_diff;
+	long		  timeout;
 #ifdef DEBUG_TIMING
 	struct timeval    t;
 #endif
@@ -1059,9 +1080,9 @@
 
 	if ((smi_info->irq) && (!smi_info->interrupt_disabled)) {
 		/* Running with interrupts, only do long timeouts. */
-		smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
+		timeout = jiffies + SI_TIMEOUT_JIFFIES;
 		smi_inc_stat(smi_info, long_timeouts);
-		goto do_add_timer;
+		goto do_mod_timer;
 	}
 
 	/*
@@ -1070,14 +1091,15 @@
 	 */
 	if (smi_result == SI_SM_CALL_WITH_DELAY) {
 		smi_inc_stat(smi_info, short_timeouts);
-		smi_info->si_timer.expires = jiffies + 1;
+		timeout = jiffies + 1;
 	} else {
 		smi_inc_stat(smi_info, long_timeouts);
-		smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES;
+		timeout = jiffies + SI_TIMEOUT_JIFFIES;
 	}
 
- do_add_timer:
-	add_timer(&(smi_info->si_timer));
+ do_mod_timer:
+	if (smi_result != SI_SM_IDLE)
+		mod_timer(&(smi_info->si_timer), timeout);
 }
 
 static irqreturn_t si_irq_handler(int irq, void *data)
@@ -1144,10 +1166,10 @@
 		new_smi->thread = kthread_run(ipmi_thread, new_smi,
 					      "kipmi%d", new_smi->intf_num);
 		if (IS_ERR(new_smi->thread)) {
-			printk(KERN_NOTICE "ipmi_si_intf: Could not start"
-			       " kernel thread due to error %ld, only using"
-			       " timers to drive the interface\n",
-			       PTR_ERR(new_smi->thread));
+			dev_notice(new_smi->dev, "Could not start"
+				   " kernel thread due to error %ld, only using"
+				   " timers to drive the interface\n",
+				   PTR_ERR(new_smi->thread));
 			new_smi->thread = NULL;
 		}
 	}
@@ -1308,14 +1330,13 @@
 				 DEVICE_NAME,
 				 info);
 	if (rv) {
-		printk(KERN_WARNING
-		       "ipmi_si: %s unable to claim interrupt %d,"
-		       " running polled\n",
-		       DEVICE_NAME, info->irq);
+		dev_warn(info->dev, "%s unable to claim interrupt %d,"
+			 " running polled\n",
+			 DEVICE_NAME, info->irq);
 		info->irq = 0;
 	} else {
 		info->irq_cleanup = std_irq_cleanup;
-		printk("  Using irq %d\n", info->irq);
+		dev_info(info->dev, "Using irq %d\n", info->irq);
 	}
 
 	return rv;
@@ -1406,8 +1427,8 @@
 		info->io.outputb = port_outl;
 		break;
 	default:
-		printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n",
-		       info->io.regsize);
+		dev_warn(info->dev, "Invalid register size: %d\n",
+			 info->io.regsize);
 		return -EINVAL;
 	}
 
@@ -1529,8 +1550,8 @@
 		break;
 #endif
 	default:
-		printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n",
-		       info->io.regsize);
+		dev_warn(info->dev, "Invalid register size: %d\n",
+			 info->io.regsize);
 		return -EINVAL;
 	}
 
@@ -1755,7 +1776,7 @@
 				goto out;
 			}
 
-			info->addr_source = "hotmod";
+			info->addr_source = SI_HOTMOD;
 			info->si_type = si_type;
 			info->io.addr_data = addr;
 			info->io.addr_type = addr_space;
@@ -1777,7 +1798,9 @@
 				info->irq_setup = std_irq_setup;
 			info->slave_addr = ipmb;
 
-			try_smi_init(info);
+			if (!add_smi(info))
+				if (try_smi_init(info))
+					cleanup_one_si(info);
 		} else {
 			/* remove */
 			struct smi_info *e, *tmp_e;
@@ -1813,7 +1836,8 @@
 		if (!info)
 			return;
 
-		info->addr_source = "hardcoded";
+		info->addr_source = SI_HARDCODED;
+		printk(KERN_INFO PFX "probing via hardcoded address\n");
 
 		if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) {
 			info->si_type = SI_KCS;
@@ -1822,8 +1846,7 @@
 		} else if (strcmp(si_type[i], "bt") == 0) {
 			info->si_type = SI_BT;
 		} else {
-			printk(KERN_WARNING
-			       "ipmi_si: Interface type specified "
+			printk(KERN_WARNING PFX "Interface type specified "
 			       "for interface %d, was invalid: %s\n",
 			       i, si_type[i]);
 			kfree(info);
@@ -1841,11 +1864,9 @@
 			info->io.addr_data = addrs[i];
 			info->io.addr_type = IPMI_MEM_ADDR_SPACE;
 		} else {
-			printk(KERN_WARNING
-			       "ipmi_si: Interface type specified "
-			       "for interface %d, "
-			       "but port and address were not set or "
-			       "set to zero.\n", i);
+			printk(KERN_WARNING PFX "Interface type specified "
+			       "for interface %d, but port and address were "
+			       "not set or set to zero.\n", i);
 			kfree(info);
 			continue;
 		}
@@ -1863,7 +1884,9 @@
 			info->irq_setup = std_irq_setup;
 		info->slave_addr = slave_addrs[i];
 
-		try_smi_init(info);
+		if (!add_smi(info))
+			if (try_smi_init(info))
+				cleanup_one_si(info);
 	}
 }
 
@@ -1923,15 +1946,13 @@
 					  &ipmi_acpi_gpe,
 					  info);
 	if (status != AE_OK) {
-		printk(KERN_WARNING
-		       "ipmi_si: %s unable to claim ACPI GPE %d,"
-		       " running polled\n",
-		       DEVICE_NAME, info->irq);
+		dev_warn(info->dev, "%s unable to claim ACPI GPE %d,"
+			 " running polled\n", DEVICE_NAME, info->irq);
 		info->irq = 0;
 		return -EINVAL;
 	} else {
 		info->irq_cleanup = acpi_gpe_irq_cleanup;
-		printk("  Using ACPI GPE %d\n", info->irq);
+		dev_info(info->dev, "Using ACPI GPE %d\n", info->irq);
 		return 0;
 	}
 }
@@ -1989,8 +2010,8 @@
 	u8 		 addr_space;
 
 	if (spmi->IPMIlegacy != 1) {
-	    printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy);
-	    return -ENODEV;
+		printk(KERN_INFO PFX "Bad SPMI legacy %d\n", spmi->IPMIlegacy);
+		return -ENODEV;
 	}
 
 	if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
@@ -2000,11 +2021,12 @@
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info) {
-		printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n");
+		printk(KERN_ERR PFX "Could not allocate SI data (3)\n");
 		return -ENOMEM;
 	}
 
-	info->addr_source = "SPMI";
+	info->addr_source = SI_SPMI;
+	printk(KERN_INFO PFX "probing via SPMI\n");
 
 	/* Figure out the interface type. */
 	switch (spmi->InterfaceType) {
@@ -2018,8 +2040,8 @@
 		info->si_type = SI_BT;
 		break;
 	default:
-		printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n",
-			spmi->InterfaceType);
+		printk(KERN_INFO PFX "Unknown ACPI/SPMI SI type %d\n",
+		       spmi->InterfaceType);
 		kfree(info);
 		return -EIO;
 	}
@@ -2055,13 +2077,12 @@
 		info->io.addr_type = IPMI_IO_ADDR_SPACE;
 	} else {
 		kfree(info);
-		printk(KERN_WARNING
-		       "ipmi_si: Unknown ACPI I/O Address type\n");
+		printk(KERN_WARNING PFX "Unknown ACPI I/O Address type\n");
 		return -EIO;
 	}
 	info->io.addr_data = spmi->addr.address;
 
-	try_smi_init(info);
+	add_smi(info);
 
 	return 0;
 }
@@ -2093,6 +2114,7 @@
 {
 	struct acpi_device *acpi_dev;
 	struct smi_info *info;
+	struct resource *res;
 	acpi_handle handle;
 	acpi_status status;
 	unsigned long long tmp;
@@ -2105,7 +2127,8 @@
 	if (!info)
 		return -ENOMEM;
 
-	info->addr_source = "ACPI";
+	info->addr_source = SI_ACPI;
+	printk(KERN_INFO PFX "probing via ACPI\n");
 
 	handle = acpi_dev->handle;
 
@@ -2125,22 +2148,26 @@
 		info->si_type = SI_BT;
 		break;
 	default:
-		dev_info(&dev->dev, "unknown interface type %lld\n", tmp);
+		dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp);
 		goto err_free;
 	}
 
-	if (pnp_port_valid(dev, 0)) {
+	res = pnp_get_resource(dev, IORESOURCE_IO, 0);
+	if (res) {
 		info->io_setup = port_setup;
 		info->io.addr_type = IPMI_IO_ADDR_SPACE;
-		info->io.addr_data = pnp_port_start(dev, 0);
-	} else if (pnp_mem_valid(dev, 0)) {
-		info->io_setup = mem_setup;
-		info->io.addr_type = IPMI_MEM_ADDR_SPACE;
-		info->io.addr_data = pnp_mem_start(dev, 0);
 	} else {
+		res = pnp_get_resource(dev, IORESOURCE_MEM, 0);
+		if (res) {
+			info->io_setup = mem_setup;
+			info->io.addr_type = IPMI_MEM_ADDR_SPACE;
+		}
+	}
+	if (!res) {
 		dev_err(&dev->dev, "no I/O or memory address\n");
 		goto err_free;
 	}
+	info->io.addr_data = res->start;
 
 	info->io.regspacing = DEFAULT_REGSPACING;
 	info->io.regsize = DEFAULT_REGSPACING;
@@ -2156,10 +2183,14 @@
 		info->irq_setup = std_irq_setup;
 	}
 
-	info->dev = &acpi_dev->dev;
+	info->dev = &dev->dev;
 	pnp_set_drvdata(dev, info);
 
-	return try_smi_init(info);
+	dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n",
+		 res, info->io.regsize, info->io.regspacing,
+		 info->irq);
+
+	return add_smi(info);
 
 err_free:
 	kfree(info);
@@ -2264,12 +2295,12 @@
 
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info) {
-		printk(KERN_ERR
-		       "ipmi_si: Could not allocate SI data\n");
+		printk(KERN_ERR PFX "Could not allocate SI data\n");
 		return;
 	}
 
-	info->addr_source = "SMBIOS";
+	info->addr_source = SI_SMBIOS;
+	printk(KERN_INFO PFX "probing via SMBIOS\n");
 
 	switch (ipmi_data->type) {
 	case 0x01: /* KCS */
@@ -2299,8 +2330,7 @@
 
 	default:
 		kfree(info);
-		printk(KERN_WARNING
-		       "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n",
+		printk(KERN_WARNING PFX "Unknown SMBIOS I/O Address type: %d\n",
 		       ipmi_data->addr_space);
 		return;
 	}
@@ -2318,7 +2348,7 @@
 	if (info->irq)
 		info->irq_setup = std_irq_setup;
 
-	try_smi_init(info);
+	add_smi(info);
 }
 
 static void __devinit dmi_find_bmc(void)
@@ -2368,7 +2398,8 @@
 	if (!info)
 		return -ENOMEM;
 
-	info->addr_source = "PCI";
+	info->addr_source = SI_PCI;
+	dev_info(&pdev->dev, "probing via PCI");
 
 	switch (class_type) {
 	case PCI_ERMC_CLASSCODE_TYPE_SMIC:
@@ -2385,15 +2416,13 @@
 
 	default:
 		kfree(info);
-		printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n",
-		       pci_name(pdev), class_type);
+		dev_info(&pdev->dev, "Unknown IPMI type: %d\n", class_type);
 		return -ENOMEM;
 	}
 
 	rv = pci_enable_device(pdev);
 	if (rv) {
-		printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n",
-		       pci_name(pdev));
+		dev_err(&pdev->dev, "couldn't enable PCI device\n");
 		kfree(info);
 		return rv;
 	}
@@ -2421,7 +2450,11 @@
 	info->dev = &pdev->dev;
 	pci_set_drvdata(pdev, info);
 
-	return try_smi_init(info);
+	dev_info(&pdev->dev, "%pR regsize %d spacing %d irq %d\n",
+		&pdev->resource[0], info->io.regsize, info->io.regspacing,
+		info->irq);
+
+	return add_smi(info);
 }
 
 static void __devexit ipmi_pci_remove(struct pci_dev *pdev)
@@ -2473,7 +2506,7 @@
 	int ret;
 	int proplen;
 
-	dev_info(&dev->dev, PFX "probing via device tree\n");
+	dev_info(&dev->dev, "probing via device tree\n");
 
 	ret = of_address_to_resource(np, 0, &resource);
 	if (ret) {
@@ -2503,12 +2536,12 @@
 
 	if (!info) {
 		dev_err(&dev->dev,
-			PFX "could not allocate memory for OF probe\n");
+			"could not allocate memory for OF probe\n");
 		return -ENOMEM;
 	}
 
 	info->si_type		= (enum si_type) match->data;
-	info->addr_source	= "device-tree";
+	info->addr_source	= SI_DEVICETREE;
 	info->irq_setup		= std_irq_setup;
 
 	if (resource.flags & IORESOURCE_IO) {
@@ -2528,13 +2561,13 @@
 	info->irq		= irq_of_parse_and_map(dev->dev.of_node, 0);
 	info->dev		= &dev->dev;
 
-	dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %x\n",
+	dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %d\n",
 		info->io.addr_data, info->io.regsize, info->io.regspacing,
 		info->irq);
 
 	dev_set_drvdata(&dev->dev, info);
 
-	return try_smi_init(info);
+	return add_smi(info);
 }
 
 static int __devexit ipmi_of_remove(struct of_device *dev)
@@ -2643,9 +2676,8 @@
 
 	rv = wait_for_msg_done(smi_info);
 	if (rv) {
-		printk(KERN_WARNING
-		       "ipmi_si: Error getting response from get global,"
-		       " enables command, the event buffer is not"
+		printk(KERN_WARNING PFX "Error getting response from get"
+		       " global enables command, the event buffer is not"
 		       " enabled.\n");
 		goto out;
 	}
@@ -2657,10 +2689,8 @@
 			resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 ||
 			resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD   ||
 			resp[2] != 0) {
-		printk(KERN_WARNING
-		       "ipmi_si: Invalid return from get global"
-		       " enables command, cannot enable the event"
-		       " buffer.\n");
+		printk(KERN_WARNING PFX "Invalid return from get global"
+		       " enables command, cannot enable the event buffer.\n");
 		rv = -EINVAL;
 		goto out;
 	}
@@ -2676,9 +2706,8 @@
 
 	rv = wait_for_msg_done(smi_info);
 	if (rv) {
-		printk(KERN_WARNING
-		       "ipmi_si: Error getting response from set global,"
-		       " enables command, the event buffer is not"
+		printk(KERN_WARNING PFX "Error getting response from set"
+		       " global, enables command, the event buffer is not"
 		       " enabled.\n");
 		goto out;
 	}
@@ -2689,10 +2718,8 @@
 	if (resp_len < 3 ||
 			resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 ||
 			resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) {
-		printk(KERN_WARNING
-		       "ipmi_si: Invalid return from get global,"
-		       "enables command, not enable the event"
-		       " buffer.\n");
+		printk(KERN_WARNING PFX "Invalid return from get global,"
+		       "enables command, not enable the event buffer.\n");
 		rv = -EINVAL;
 		goto out;
 	}
@@ -2951,7 +2978,7 @@
 		if (!info)
 			return;
 
-		info->addr_source = NULL;
+		info->addr_source = SI_DEFAULT;
 
 		info->si_type = ipmi_defaults[i].type;
 		info->io_setup = port_setup;
@@ -2963,14 +2990,16 @@
 		info->io.regsize = DEFAULT_REGSPACING;
 		info->io.regshift = 0;
 
-		if (try_smi_init(info) == 0) {
-			/* Found one... */
-			printk(KERN_INFO "ipmi_si: Found default %s state"
-			       " machine at %s address 0x%lx\n",
-			       si_to_str[info->si_type],
-			       addr_space_to_str[info->io.addr_type],
-			       info->io.addr_data);
-			return;
+		if (add_smi(info) == 0) {
+			if ((try_smi_init(info)) == 0) {
+				/* Found one... */
+				printk(KERN_INFO PFX "Found default %s"
+				" state machine at %s address 0x%lx\n",
+				si_to_str[info->si_type],
+				addr_space_to_str[info->io.addr_type],
+				info->io.addr_data);
+			} else
+				cleanup_one_si(info);
 		}
 	}
 }
@@ -2989,34 +3018,48 @@
 	return 1;
 }
 
-static int try_smi_init(struct smi_info *new_smi)
+static int add_smi(struct smi_info *new_smi)
 {
-	int rv;
-	int i;
+	int rv = 0;
 
-	if (new_smi->addr_source) {
-		printk(KERN_INFO "ipmi_si: Trying %s-specified %s state"
-		       " machine at %s address 0x%lx, slave address 0x%x,"
-		       " irq %d\n",
-		       new_smi->addr_source,
-		       si_to_str[new_smi->si_type],
-		       addr_space_to_str[new_smi->io.addr_type],
-		       new_smi->io.addr_data,
-		       new_smi->slave_addr, new_smi->irq);
-	}
-
+	printk(KERN_INFO PFX "Adding %s-specified %s state machine",
+			ipmi_addr_src_to_str[new_smi->addr_source],
+			si_to_str[new_smi->si_type]);
 	mutex_lock(&smi_infos_lock);
 	if (!is_new_interface(new_smi)) {
-		printk(KERN_WARNING "ipmi_si: duplicate interface\n");
+		printk(KERN_CONT PFX "duplicate interface\n");
 		rv = -EBUSY;
 		goto out_err;
 	}
 
+	printk(KERN_CONT "\n");
+
 	/* So we know not to free it unless we have allocated one. */
 	new_smi->intf = NULL;
 	new_smi->si_sm = NULL;
 	new_smi->handlers = NULL;
 
+	list_add_tail(&new_smi->link, &smi_infos);
+
+out_err:
+	mutex_unlock(&smi_infos_lock);
+	return rv;
+}
+
+static int try_smi_init(struct smi_info *new_smi)
+{
+	int rv = 0;
+	int i;
+
+	printk(KERN_INFO PFX "Trying %s-specified %s state"
+	       " machine at %s address 0x%lx, slave address 0x%x,"
+	       " irq %d\n",
+	       ipmi_addr_src_to_str[new_smi->addr_source],
+	       si_to_str[new_smi->si_type],
+	       addr_space_to_str[new_smi->io.addr_type],
+	       new_smi->io.addr_data,
+	       new_smi->slave_addr, new_smi->irq);
+
 	switch (new_smi->si_type) {
 	case SI_KCS:
 		new_smi->handlers = &kcs_smi_handlers;
@@ -3039,7 +3082,8 @@
 	/* Allocate the state machine's data and initialize it. */
 	new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL);
 	if (!new_smi->si_sm) {
-		printk(KERN_ERR "Could not allocate state machine memory\n");
+		printk(KERN_ERR PFX
+		       "Could not allocate state machine memory\n");
 		rv = -ENOMEM;
 		goto out_err;
 	}
@@ -3049,7 +3093,7 @@
 	/* Now that we know the I/O size, we can set up the I/O. */
 	rv = new_smi->io_setup(new_smi);
 	if (rv) {
-		printk(KERN_ERR "Could not set up I/O space\n");
+		printk(KERN_ERR PFX "Could not set up I/O space\n");
 		goto out_err;
 	}
 
@@ -3059,8 +3103,7 @@
 	/* Do low-level detection first. */
 	if (new_smi->handlers->detect(new_smi->si_sm)) {
 		if (new_smi->addr_source)
-			printk(KERN_INFO "ipmi_si: Interface detection"
-			       " failed\n");
+			printk(KERN_INFO PFX "Interface detection failed\n");
 		rv = -ENODEV;
 		goto out_err;
 	}
@@ -3072,7 +3115,7 @@
 	rv = try_get_dev_id(new_smi);
 	if (rv) {
 		if (new_smi->addr_source)
-			printk(KERN_INFO "ipmi_si: There appears to be no BMC"
+			printk(KERN_INFO PFX "There appears to be no BMC"
 			       " at this location\n");
 		goto out_err;
 	}
@@ -3088,7 +3131,7 @@
 	for (i = 0; i < SI_NUM_STATS; i++)
 		atomic_set(&new_smi->stats[i], 0);
 
-	new_smi->interrupt_disabled = 0;
+	new_smi->interrupt_disabled = 1;
 	atomic_set(&new_smi->stop_operation, 0);
 	new_smi->intf_num = smi_num;
 	smi_num++;
@@ -3114,9 +3157,8 @@
 		new_smi->pdev = platform_device_alloc("ipmi_si",
 						      new_smi->intf_num);
 		if (!new_smi->pdev) {
-			printk(KERN_ERR
-			       "ipmi_si_intf:"
-			       " Unable to allocate platform device\n");
+			printk(KERN_ERR PFX
+			       "Unable to allocate platform device\n");
 			goto out_err;
 		}
 		new_smi->dev = &new_smi->pdev->dev;
@@ -3124,9 +3166,8 @@
 
 		rv = platform_device_add(new_smi->pdev);
 		if (rv) {
-			printk(KERN_ERR
-			       "ipmi_si_intf:"
-			       " Unable to register system interface device:"
+			printk(KERN_ERR PFX
+			       "Unable to register system interface device:"
 			       " %d\n",
 			       rv);
 			goto out_err;
@@ -3141,9 +3182,8 @@
 			       "bmc",
 			       new_smi->slave_addr);
 	if (rv) {
-		printk(KERN_ERR
-		       "ipmi_si: Unable to register device: error %d\n",
-		       rv);
+		dev_err(new_smi->dev, "Unable to register device: error %d\n",
+			rv);
 		goto out_err_stop_timer;
 	}
 
@@ -3151,9 +3191,7 @@
 				     type_file_read_proc,
 				     new_smi);
 	if (rv) {
-		printk(KERN_ERR
-		       "ipmi_si: Unable to create proc entry: %d\n",
-		       rv);
+		dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv);
 		goto out_err_stop_timer;
 	}
 
@@ -3161,9 +3199,7 @@
 				     stat_file_read_proc,
 				     new_smi);
 	if (rv) {
-		printk(KERN_ERR
-		       "ipmi_si: Unable to create proc entry: %d\n",
-		       rv);
+		dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv);
 		goto out_err_stop_timer;
 	}
 
@@ -3171,18 +3207,12 @@
 				     param_read_proc,
 				     new_smi);
 	if (rv) {
-		printk(KERN_ERR
-		       "ipmi_si: Unable to create proc entry: %d\n",
-		       rv);
+		dev_err(new_smi->dev, "Unable to create proc entry: %d\n", rv);
 		goto out_err_stop_timer;
 	}
 
-	list_add_tail(&new_smi->link, &smi_infos);
-
-	mutex_unlock(&smi_infos_lock);
-
-	printk(KERN_INFO "IPMI %s interface initialized\n",
-	       si_to_str[new_smi->si_type]);
+	dev_info(new_smi->dev, "IPMI %s interface initialized\n",
+		 si_to_str[new_smi->si_type]);
 
 	return 0;
 
@@ -3191,11 +3221,17 @@
 	wait_for_timer_and_thread(new_smi);
 
  out_err:
-	if (new_smi->intf)
-		ipmi_unregister_smi(new_smi->intf);
+	new_smi->interrupt_disabled = 1;
 
-	if (new_smi->irq_cleanup)
+	if (new_smi->intf) {
+		ipmi_unregister_smi(new_smi->intf);
+		new_smi->intf = NULL;
+	}
+
+	if (new_smi->irq_cleanup) {
 		new_smi->irq_cleanup(new_smi);
+		new_smi->irq_cleanup = NULL;
+	}
 
 	/*
 	 * Wait until we know that we are out of any interrupt
@@ -3208,18 +3244,21 @@
 		if (new_smi->handlers)
 			new_smi->handlers->cleanup(new_smi->si_sm);
 		kfree(new_smi->si_sm);
+		new_smi->si_sm = NULL;
 	}
-	if (new_smi->addr_source_cleanup)
+	if (new_smi->addr_source_cleanup) {
 		new_smi->addr_source_cleanup(new_smi);
-	if (new_smi->io_cleanup)
+		new_smi->addr_source_cleanup = NULL;
+	}
+	if (new_smi->io_cleanup) {
 		new_smi->io_cleanup(new_smi);
+		new_smi->io_cleanup = NULL;
+	}
 
-	if (new_smi->dev_registered)
+	if (new_smi->dev_registered) {
 		platform_device_unregister(new_smi->pdev);
-
-	kfree(new_smi);
-
-	mutex_unlock(&smi_infos_lock);
+		new_smi->dev_registered = 0;
+	}
 
 	return rv;
 }
@@ -3229,6 +3268,8 @@
 	int  i;
 	char *str;
 	int  rv;
+	struct smi_info *e;
+	enum ipmi_addr_src type = SI_INVALID;
 
 	if (initialized)
 		return 0;
@@ -3237,9 +3278,7 @@
 	/* Register the device drivers. */
 	rv = driver_register(&ipmi_driver.driver);
 	if (rv) {
-		printk(KERN_ERR
-		       "init_ipmi_si: Unable to register driver: %d\n",
-		       rv);
+		printk(KERN_ERR PFX "Unable to register driver: %d\n", rv);
 		return rv;
 	}
 
@@ -3263,6 +3302,24 @@
 
 	hardcode_find_bmc();
 
+	/* If the user gave us a device, they presumably want us to use it */
+	mutex_lock(&smi_infos_lock);
+	if (!list_empty(&smi_infos)) {
+		mutex_unlock(&smi_infos_lock);
+		return 0;
+	}
+	mutex_unlock(&smi_infos_lock);
+
+#ifdef CONFIG_PCI
+	rv = pci_register_driver(&ipmi_pci_driver);
+	if (rv)
+		printk(KERN_ERR PFX "Unable to register PCI driver: %d\n", rv);
+#endif
+
+#ifdef CONFIG_ACPI
+	pnp_register_driver(&ipmi_pnp_driver);
+#endif
+
 #ifdef CONFIG_DMI
 	dmi_find_bmc();
 #endif
@@ -3270,31 +3327,56 @@
 #ifdef CONFIG_ACPI
 	spmi_find_bmc();
 #endif
-#ifdef CONFIG_ACPI
-	pnp_register_driver(&ipmi_pnp_driver);
-#endif
-
-#ifdef CONFIG_PCI
-	rv = pci_register_driver(&ipmi_pci_driver);
-	if (rv)
-		printk(KERN_ERR
-		       "init_ipmi_si: Unable to register PCI driver: %d\n",
-		       rv);
-#endif
 
 #ifdef CONFIG_PPC_OF
 	of_register_platform_driver(&ipmi_of_platform_driver);
 #endif
 
+	/* We prefer devices with interrupts, but in the case of a machine
+	   with multiple BMCs we assume that there will be several instances
+	   of a given type so if we succeed in registering a type then also
+	   try to register everything else of the same type */
+
+	mutex_lock(&smi_infos_lock);
+	list_for_each_entry(e, &smi_infos, link) {
+		/* Try to register a device if it has an IRQ and we either
+		   haven't successfully registered a device yet or this
+		   device has the same type as one we successfully registered */
+		if (e->irq && (!type || e->addr_source == type)) {
+			if (!try_smi_init(e)) {
+				type = e->addr_source;
+			}
+		}
+	}
+
+	/* type will only have been set if we successfully registered an si */
+	if (type) {
+		mutex_unlock(&smi_infos_lock);
+		return 0;
+	}
+
+	/* Fall back to the preferred device */
+
+	list_for_each_entry(e, &smi_infos, link) {
+		if (!e->irq && (!type || e->addr_source == type)) {
+			if (!try_smi_init(e)) {
+				type = e->addr_source;
+			}
+		}
+	}
+	mutex_unlock(&smi_infos_lock);
+
+	if (type)
+		return 0;
+
 	if (si_trydefaults) {
 		mutex_lock(&smi_infos_lock);
 		if (list_empty(&smi_infos)) {
 			/* No BMC was found, try defaults. */
 			mutex_unlock(&smi_infos_lock);
 			default_find_bmc();
-		} else {
+		} else
 			mutex_unlock(&smi_infos_lock);
-		}
 	}
 
 	mutex_lock(&smi_infos_lock);
@@ -3308,8 +3390,8 @@
 		of_unregister_platform_driver(&ipmi_of_platform_driver);
 #endif
 		driver_unregister(&ipmi_driver.driver);
-		printk(KERN_WARNING
-		       "ipmi_si: Unable to find any System Interface(s)\n");
+		printk(KERN_WARNING PFX
+		       "Unable to find any System Interface(s)\n");
 		return -ENODEV;
 	} else {
 		mutex_unlock(&smi_infos_lock);
@@ -3320,7 +3402,7 @@
 
 static void cleanup_one_si(struct smi_info *to_clean)
 {
-	int           rv;
+	int           rv = 0;
 	unsigned long flags;
 
 	if (!to_clean)
@@ -3364,14 +3446,16 @@
 		schedule_timeout_uninterruptible(1);
 	}
 
-	rv = ipmi_unregister_smi(to_clean->intf);
+	if (to_clean->intf)
+		rv = ipmi_unregister_smi(to_clean->intf);
+
 	if (rv) {
-		printk(KERN_ERR
-		       "ipmi_si: Unable to unregister device: errno=%d\n",
+		printk(KERN_ERR PFX "Unable to unregister device: errno=%d\n",
 		       rv);
 	}
 
-	to_clean->handlers->cleanup(to_clean->si_sm);
+	if (to_clean->handlers)
+		to_clean->handlers->cleanup(to_clean->si_sm);
 
 	kfree(to_clean->si_sm);
 
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c
index fdd3754..02abfdd 100644
--- a/drivers/char/ppdev.c
+++ b/drivers/char/ppdev.c
@@ -287,12 +287,10 @@
 	char *name;
 	int fl;
 
-	name = kmalloc (strlen (CHRDEV) + 3, GFP_KERNEL);
+	name = kasprintf(GFP_KERNEL, CHRDEV "%x", minor);
 	if (name == NULL)
 		return -ENOMEM;
 
-	sprintf (name, CHRDEV "%x", minor);
-
 	port = parport_find_number (minor);
 	if (!port) {
 		printk (KERN_WARNING "%s: no associated port!\n", name);
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 606048b..85c004a 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -305,8 +305,7 @@
 	return ps3flash_writeback(ps3flash_dev);
 }
 
-static int ps3flash_fsync(struct file *file, struct dentry *dentry,
-			  int datasync)
+static int ps3flash_fsync(struct file *file, int datasync)
 {
 	return ps3flash_writeback(ps3flash_dev);
 }
diff --git a/drivers/char/ramoops.c b/drivers/char/ramoops.c
new file mode 100644
index 0000000..74f00b5
--- /dev/null
+++ b/drivers/char/ramoops.c
@@ -0,0 +1,162 @@
+/*
+ * RAM Oops/Panic logger
+ *
+ * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/kmsg_dump.h>
+#include <linux/time.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+
+#define RAMOOPS_KERNMSG_HDR "===="
+#define RAMOOPS_HEADER_SIZE   (5 + sizeof(struct timeval))
+
+#define RECORD_SIZE 4096
+
+static ulong mem_address;
+module_param(mem_address, ulong, 0400);
+MODULE_PARM_DESC(mem_address,
+		"start of reserved RAM used to store oops/panic logs");
+
+static ulong mem_size;
+module_param(mem_size, ulong, 0400);
+MODULE_PARM_DESC(mem_size,
+		"size of reserved RAM used to store oops/panic logs");
+
+static int dump_oops = 1;
+module_param(dump_oops, int, 0600);
+MODULE_PARM_DESC(dump_oops,
+		"set to 1 to dump oopses, 0 to only dump panics (default 1)");
+
+static struct ramoops_context {
+	struct kmsg_dumper dump;
+	void *virt_addr;
+	phys_addr_t phys_addr;
+	unsigned long size;
+	int count;
+	int max_count;
+} oops_cxt;
+
+static void ramoops_do_dump(struct kmsg_dumper *dumper,
+		enum kmsg_dump_reason reason, const char *s1, unsigned long l1,
+		const char *s2, unsigned long l2)
+{
+	struct ramoops_context *cxt = container_of(dumper,
+			struct ramoops_context, dump);
+	unsigned long s1_start, s2_start;
+	unsigned long l1_cpy, l2_cpy;
+	int res;
+	char *buf;
+	struct timeval timestamp;
+
+	/* Only dump oopses if dump_oops is set */
+	if (reason == KMSG_DUMP_OOPS && !dump_oops)
+		return;
+
+	buf = (char *)(cxt->virt_addr + (cxt->count * RECORD_SIZE));
+	memset(buf, '\0', RECORD_SIZE);
+	res = sprintf(buf, "%s", RAMOOPS_KERNMSG_HDR);
+	buf += res;
+	do_gettimeofday(&timestamp);
+	res = sprintf(buf, "%lu.%lu\n", (long)timestamp.tv_sec, (long)timestamp.tv_usec);
+	buf += res;
+
+	l2_cpy = min(l2, (unsigned long)(RECORD_SIZE - RAMOOPS_HEADER_SIZE));
+	l1_cpy = min(l1, (unsigned long)(RECORD_SIZE - RAMOOPS_HEADER_SIZE) - l2_cpy);
+
+	s2_start = l2 - l2_cpy;
+	s1_start = l1 - l1_cpy;
+
+	memcpy(buf, s1 + s1_start, l1_cpy);
+	memcpy(buf + l1_cpy, s2 + s2_start, l2_cpy);
+
+	cxt->count = (cxt->count + 1) % cxt->max_count;
+}
+
+static int __init ramoops_init(void)
+{
+	struct ramoops_context *cxt = &oops_cxt;
+	int err = -EINVAL;
+
+	if (!mem_size) {
+		printk(KERN_ERR "ramoops: invalid size specification");
+		goto fail3;
+	}
+
+	rounddown_pow_of_two(mem_size);
+
+	if (mem_size < RECORD_SIZE) {
+		printk(KERN_ERR "ramoops: size too small");
+		goto fail3;
+	}
+
+	cxt->max_count = mem_size / RECORD_SIZE;
+	cxt->count = 0;
+	cxt->size = mem_size;
+	cxt->phys_addr = mem_address;
+
+	if (!request_mem_region(cxt->phys_addr, cxt->size, "ramoops")) {
+		printk(KERN_ERR "ramoops: request mem region failed");
+		err = -EINVAL;
+		goto fail3;
+	}
+
+	cxt->virt_addr = ioremap(cxt->phys_addr,  cxt->size);
+	if (!cxt->virt_addr) {
+		printk(KERN_ERR "ramoops: ioremap failed");
+		goto fail2;
+	}
+
+	cxt->dump.dump = ramoops_do_dump;
+	err = kmsg_dump_register(&cxt->dump);
+	if (err) {
+		printk(KERN_ERR "ramoops: registering kmsg dumper failed");
+		goto fail1;
+	}
+
+	return 0;
+
+fail1:
+	iounmap(cxt->virt_addr);
+fail2:
+	release_mem_region(cxt->phys_addr, cxt->size);
+fail3:
+	return err;
+}
+
+static void __exit ramoops_exit(void)
+{
+	struct ramoops_context *cxt = &oops_cxt;
+
+	if (kmsg_dump_unregister(&cxt->dump) < 0)
+		printk(KERN_WARNING "ramoops: could not unregister kmsg_dumper");
+
+	iounmap(cxt->virt_addr);
+	release_mem_region(cxt->phys_addr, cxt->size);
+}
+
+
+module_init(ramoops_init);
+module_exit(ramoops_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Marco Stornelli <marco.stornelli@gmail.com>");
+MODULE_DESCRIPTION("RAM Oops/Panic logger/driver");
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index bd1d116..7cdb6ee 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -3967,13 +3967,9 @@
 	font.charcount = op->charcount;
 	font.height = op->height;
 	font.width = op->width;
-	font.data = kmalloc(size, GFP_KERNEL);
-	if (!font.data)
-		return -ENOMEM;
-	if (copy_from_user(font.data, op->data, size)) {
-		kfree(font.data);
-		return -EFAULT;
-	}
+	font.data = memdup_user(op->data, size);
+	if (IS_ERR(font.data))
+		return PTR_ERR(font.data);
 	acquire_console_sem();
 	if (vc->vc_sw->con_font_set)
 		rc = vc->vc_sw->con_font_set(vc, &font, op->flags);
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 12fdd39..1994885 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -156,7 +156,7 @@
 
 	if (dev->enabled)
 		return 0;
-	if (!cpuidle_curr_driver || !cpuidle_curr_governor)
+	if (!cpuidle_get_driver() || !cpuidle_curr_governor)
 		return -EIO;
 	if (!dev->state_count)
 		return -EINVAL;
@@ -207,7 +207,7 @@
 {
 	if (!dev->enabled)
 		return;
-	if (!cpuidle_curr_driver || !cpuidle_curr_governor)
+	if (!cpuidle_get_driver() || !cpuidle_curr_governor)
 		return;
 
 	dev->enabled = 0;
@@ -271,10 +271,11 @@
 {
 	int ret;
 	struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu);
+	struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
 
 	if (!sys_dev)
 		return -EINVAL;
-	if (!try_module_get(cpuidle_curr_driver->owner))
+	if (!try_module_get(cpuidle_driver->owner))
 		return -EINVAL;
 
 	init_completion(&dev->kobj_unregister);
@@ -284,7 +285,7 @@
 	per_cpu(cpuidle_devices, dev->cpu) = dev;
 	list_add(&dev->device_list, &cpuidle_detected_devices);
 	if ((ret = cpuidle_add_sysfs(sys_dev))) {
-		module_put(cpuidle_curr_driver->owner);
+		module_put(cpuidle_driver->owner);
 		return ret;
 	}
 
@@ -325,6 +326,7 @@
 void cpuidle_unregister_device(struct cpuidle_device *dev)
 {
 	struct sys_device *sys_dev = get_cpu_sysdev((unsigned long)dev->cpu);
+	struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
 
 	if (dev->registered == 0)
 		return;
@@ -340,7 +342,7 @@
 
 	cpuidle_resume_and_unlock();
 
-	module_put(cpuidle_curr_driver->owner);
+	module_put(cpuidle_driver->owner);
 }
 
 EXPORT_SYMBOL_GPL(cpuidle_unregister_device);
diff --git a/drivers/cpuidle/cpuidle.h b/drivers/cpuidle/cpuidle.h
index 9476ba3..33e50d5 100644
--- a/drivers/cpuidle/cpuidle.h
+++ b/drivers/cpuidle/cpuidle.h
@@ -9,7 +9,6 @@
 
 /* For internal use only */
 extern struct cpuidle_governor *cpuidle_curr_governor;
-extern struct cpuidle_driver *cpuidle_curr_driver;
 extern struct list_head cpuidle_governors;
 extern struct list_head cpuidle_detected_devices;
 extern struct mutex cpuidle_lock;
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 2257004..fd1601e 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -14,7 +14,7 @@
 
 #include "cpuidle.h"
 
-struct cpuidle_driver *cpuidle_curr_driver;
+static struct cpuidle_driver *cpuidle_curr_driver;
 DEFINE_SPINLOCK(cpuidle_driver_lock);
 
 /**
@@ -40,13 +40,25 @@
 EXPORT_SYMBOL_GPL(cpuidle_register_driver);
 
 /**
+ * cpuidle_get_driver - return the current driver
+ */
+struct cpuidle_driver *cpuidle_get_driver(void)
+{
+	return cpuidle_curr_driver;
+}
+EXPORT_SYMBOL_GPL(cpuidle_get_driver);
+
+/**
  * cpuidle_unregister_driver - unregisters a driver
  * @drv: the driver
  */
 void cpuidle_unregister_driver(struct cpuidle_driver *drv)
 {
-	if (!drv)
+	if (drv != cpuidle_curr_driver) {
+		WARN(1, "invalid cpuidle_unregister_driver(%s)\n",
+			drv->name);
 		return;
+	}
 
 	spin_lock(&cpuidle_driver_lock);
 	cpuidle_curr_driver = NULL;
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 0ba9c8b..0310ffa 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -47,10 +47,11 @@
 				   char *buf)
 {
 	ssize_t ret;
+	struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
 
 	spin_lock(&cpuidle_driver_lock);
-	if (cpuidle_curr_driver)
-		ret = sprintf(buf, "%s\n", cpuidle_curr_driver->name);
+	if (cpuidle_driver)
+		ret = sprintf(buf, "%s\n", cpuidle_driver->name);
 	else
 		ret = sprintf(buf, "none\n");
 	spin_unlock(&cpuidle_driver_lock);
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index adc10a2..996c1bd 100644
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -774,7 +774,7 @@
 static void i5000_check_error(struct mem_ctl_info *mci)
 {
 	struct i5000_error_info info;
-	debugf4("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__);
+	debugf4("MC%d: %s: %s()\n", mci->mc_idx, __FILE__, __func__);
 	i5000_get_error_info(mci, &info);
 	i5000_process_error_info(mci, &info, 1);
 }
@@ -1353,8 +1353,8 @@
 	int num_dimms_per_channel;
 	int num_csrows;
 
-	debugf0("MC: " __FILE__ ": %s(), pdev bus %u dev=0x%x fn=0x%x\n",
-		__func__,
+	debugf0("MC: %s: %s(), pdev bus %u dev=0x%x fn=0x%x\n",
+		__FILE__, __func__,
 		pdev->bus->number,
 		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
 
@@ -1389,7 +1389,7 @@
 		return -ENOMEM;
 
 	kobject_get(&mci->edac_mci_kobj);
-	debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci);
+	debugf0("MC: %s: %s(): mci = %p\n", __FILE__, __func__, mci);
 
 	mci->dev = &pdev->dev;	/* record ptr  to the generic device */
 
@@ -1432,8 +1432,8 @@
 
 	/* add this new MC control structure to EDAC's list of MCs */
 	if (edac_mc_add_mc(mci)) {
-		debugf0("MC: " __FILE__
-			": %s(): failed edac_mc_add_mc()\n", __func__);
+		debugf0("MC: %s: %s(): failed edac_mc_add_mc()\n",
+			__FILE__, __func__);
 		/* FIXME: perhaps some code should go here that disables error
 		 * reporting if we just enabled it
 		 */
@@ -1478,7 +1478,7 @@
 {
 	int rc;
 
-	debugf0("MC: " __FILE__ ": %s()\n", __func__);
+	debugf0("MC: %s: %s()\n", __FILE__, __func__);
 
 	/* wake up device */
 	rc = pci_enable_device(pdev);
@@ -1497,7 +1497,7 @@
 {
 	struct mem_ctl_info *mci;
 
-	debugf0(__FILE__ ": %s()\n", __func__);
+	debugf0("%s: %s()\n", __FILE__, __func__);
 
 	if (i5000_pci)
 		edac_pci_release_generic_ctl(i5000_pci);
@@ -1544,7 +1544,7 @@
 {
 	int pci_rc;
 
-	debugf2("MC: " __FILE__ ": %s()\n", __func__);
+	debugf2("MC: %s: %s()\n", __FILE__, __func__);
 
        /* Ensure that the OPSTATE is set correctly for POLL or NMI */
        opstate_init();
@@ -1560,7 +1560,7 @@
  */
 static void __exit i5000_exit(void)
 {
-	debugf2("MC: " __FILE__ ": %s()\n", __func__);
+	debugf2("MC: %s: %s()\n", __FILE__, __func__);
 	pci_unregister_driver(&i5000_driver);
 }
 
diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c
index f99d106..010c1d6 100644
--- a/drivers/edac/i5400_edac.c
+++ b/drivers/edac/i5400_edac.c
@@ -694,7 +694,7 @@
 static void i5400_check_error(struct mem_ctl_info *mci)
 {
 	struct i5400_error_info info;
-	debugf4("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__);
+	debugf4("MC%d: %s: %s()\n", mci->mc_idx, __FILE__, __func__);
 	i5400_get_error_info(mci, &info);
 	i5400_process_error_info(mci, &info);
 }
@@ -1227,8 +1227,8 @@
 	if (dev_idx >= ARRAY_SIZE(i5400_devs))
 		return -EINVAL;
 
-	debugf0("MC: " __FILE__ ": %s(), pdev bus %u dev=0x%x fn=0x%x\n",
-		__func__,
+	debugf0("MC: %s: %s(), pdev bus %u dev=0x%x fn=0x%x\n",
+		__FILE__, __func__,
 		pdev->bus->number,
 		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
 
@@ -1256,7 +1256,7 @@
 	if (mci == NULL)
 		return -ENOMEM;
 
-	debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci);
+	debugf0("MC: %s: %s(): mci = %p\n", __FILE__, __func__, mci);
 
 	mci->dev = &pdev->dev;	/* record ptr  to the generic device */
 
@@ -1299,8 +1299,8 @@
 
 	/* add this new MC control structure to EDAC's list of MCs */
 	if (edac_mc_add_mc(mci)) {
-		debugf0("MC: " __FILE__
-			": %s(): failed edac_mc_add_mc()\n", __func__);
+		debugf0("MC: %s: %s(): failed edac_mc_add_mc()\n",
+			__FILE__, __func__);
 		/* FIXME: perhaps some code should go here that disables error
 		 * reporting if we just enabled it
 		 */
@@ -1344,7 +1344,7 @@
 {
 	int rc;
 
-	debugf0("MC: " __FILE__ ": %s()\n", __func__);
+	debugf0("MC: %s: %s()\n", __FILE__, __func__);
 
 	/* wake up device */
 	rc = pci_enable_device(pdev);
@@ -1363,7 +1363,7 @@
 {
 	struct mem_ctl_info *mci;
 
-	debugf0(__FILE__ ": %s()\n", __func__);
+	debugf0("%s: %s()\n", __FILE__, __func__);
 
 	if (i5400_pci)
 		edac_pci_release_generic_ctl(i5400_pci);
@@ -1409,7 +1409,7 @@
 {
 	int pci_rc;
 
-	debugf2("MC: " __FILE__ ": %s()\n", __func__);
+	debugf2("MC: %s: %s()\n", __FILE__, __func__);
 
 	/* Ensure that the OPSTATE is set correctly for POLL or NMI */
 	opstate_init();
@@ -1425,7 +1425,7 @@
  */
 static void __exit i5400_exit(void)
 {
-	debugf2("MC: " __FILE__ ": %s()\n", __func__);
+	debugf2("MC: %s: %s()\n", __FILE__, __func__);
 	pci_unregister_driver(&i5400_driver);
 }
 
diff --git a/drivers/edac/i82443bxgx_edac.c b/drivers/edac/i82443bxgx_edac.c
index 2bf2c50..a2fa1fee 100644
--- a/drivers/edac/i82443bxgx_edac.c
+++ b/drivers/edac/i82443bxgx_edac.c
@@ -178,7 +178,7 @@
 {
 	struct i82443bxgx_edacmc_error_info info;
 
-	debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__);
+	debugf1("MC%d: %s: %s()\n", mci->mc_idx, __FILE__, __func__);
 	i82443bxgx_edacmc_get_error_info(mci, &info);
 	i82443bxgx_edacmc_process_error_info(mci, &info, 1);
 }
@@ -198,13 +198,13 @@
 	for (index = 0; index < mci->nr_csrows; index++) {
 		csrow = &mci->csrows[index];
 		pci_read_config_byte(pdev, I82443BXGX_DRB + index, &drbar);
-		debugf1("MC%d: " __FILE__ ": %s() Row=%d DRB = %#0x\n",
-			mci->mc_idx, __func__, index, drbar);
+		debugf1("MC%d: %s: %s() Row=%d DRB = %#0x\n",
+			mci->mc_idx, __FILE__, __func__, index, drbar);
 		row_high_limit = ((u32) drbar << 23);
 		/* find the DRAM Chip Select Base address and mask */
-		debugf1("MC%d: " __FILE__ ": %s() Row=%d, "
-			"Boundry Address=%#0x, Last = %#0x \n",
-			mci->mc_idx, __func__, index, row_high_limit,
+		debugf1("MC%d: %s: %s() Row=%d, "
+			"Boundry Address=%#0x, Last = %#0x\n",
+			mci->mc_idx, __FILE__, __func__, index, row_high_limit,
 			row_high_limit_last);
 
 		/* 440GX goes to 2GB, represented with a DRB of 0. */
@@ -237,7 +237,7 @@
 	enum mem_type mtype;
 	enum edac_type edac_mode;
 
-	debugf0("MC: " __FILE__ ": %s()\n", __func__);
+	debugf0("MC: %s: %s()\n", __FILE__, __func__);
 
 	/* Something is really hosed if PCI config space reads from
 	 * the MC aren't working.
@@ -250,7 +250,7 @@
 	if (mci == NULL)
 		return -ENOMEM;
 
-	debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci);
+	debugf0("MC: %s: %s(): mci = %p\n", __FILE__, __func__, mci);
 	mci->dev = &pdev->dev;
 	mci->mtype_cap = MEM_FLAG_EDO | MEM_FLAG_SDR | MEM_FLAG_RDR;
 	mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
@@ -336,7 +336,7 @@
 			__func__);
 	}
 
-	debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
+	debugf3("MC: %s: %s(): success\n", __FILE__, __func__);
 	return 0;
 
 fail:
@@ -352,7 +352,7 @@
 {
 	int rc;
 
-	debugf0("MC: " __FILE__ ": %s()\n", __func__);
+	debugf0("MC: %s: %s()\n", __FILE__, __func__);
 
 	/* don't need to call pci_enable_device() */
 	rc = i82443bxgx_edacmc_probe1(pdev, ent->driver_data);
@@ -367,7 +367,7 @@
 {
 	struct mem_ctl_info *mci;
 
-	debugf0(__FILE__ ": %s()\n", __func__);
+	debugf0("%s: %s()\n", __FILE__, __func__);
 
 	if (i82443bxgx_pci)
 		edac_pci_release_generic_ctl(i82443bxgx_pci);
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 5045156..9dcb304 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -30,7 +30,6 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
-#include <linux/timer.h>
 #include <linux/workqueue.h>
 
 #include <asm/atomic.h>
@@ -63,7 +62,7 @@
 #define BIB_CRC(v)		((v) <<  0)
 #define BIB_CRC_LENGTH(v)	((v) << 16)
 #define BIB_INFO_LENGTH(v)	((v) << 24)
-
+#define BIB_BUS_NAME		0x31333934 /* "1394" */
 #define BIB_LINK_SPEED(v)	((v) <<  0)
 #define BIB_GENERATION(v)	((v) <<  4)
 #define BIB_MAX_ROM(v)		((v) <<  8)
@@ -73,7 +72,8 @@
 #define BIB_BMC			((1) << 28)
 #define BIB_ISC			((1) << 29)
 #define BIB_CMC			((1) << 30)
-#define BIB_IMC			((1) << 31)
+#define BIB_IRMC		((1) << 31)
+#define NODE_CAPABILITIES	0x0c0083c0 /* per IEEE 1394 clause 8.3.2.6.5.2 */
 
 static void generate_config_rom(struct fw_card *card, __be32 *config_rom)
 {
@@ -91,18 +91,18 @@
 
 	config_rom[0] = cpu_to_be32(
 		BIB_CRC_LENGTH(4) | BIB_INFO_LENGTH(4) | BIB_CRC(0));
-	config_rom[1] = cpu_to_be32(0x31333934);
+	config_rom[1] = cpu_to_be32(BIB_BUS_NAME);
 	config_rom[2] = cpu_to_be32(
 		BIB_LINK_SPEED(card->link_speed) |
 		BIB_GENERATION(card->config_rom_generation++ % 14 + 2) |
 		BIB_MAX_ROM(2) |
 		BIB_MAX_RECEIVE(card->max_receive) |
-		BIB_BMC | BIB_ISC | BIB_CMC | BIB_IMC);
+		BIB_BMC | BIB_ISC | BIB_CMC | BIB_IRMC);
 	config_rom[3] = cpu_to_be32(card->guid >> 32);
 	config_rom[4] = cpu_to_be32(card->guid);
 
 	/* Generate root directory. */
-	config_rom[6] = cpu_to_be32(0x0c0083c0); /* node capabilities */
+	config_rom[6] = cpu_to_be32(NODE_CAPABILITIES);
 	i = 7;
 	j = 7 + descriptor_count;
 
@@ -407,13 +407,6 @@
 	fw_card_put(card);
 }
 
-static void flush_timer_callback(unsigned long data)
-{
-	struct fw_card *card = (struct fw_card *)data;
-
-	fw_flush_transactions(card);
-}
-
 void fw_card_initialize(struct fw_card *card,
 			const struct fw_card_driver *driver,
 			struct device *device)
@@ -432,8 +425,6 @@
 	init_completion(&card->done);
 	INIT_LIST_HEAD(&card->transaction_list);
 	spin_lock_init(&card->lock);
-	setup_timer(&card->flush_timer,
-		    flush_timer_callback, (unsigned long)card);
 
 	card->local_node = NULL;
 
@@ -558,7 +549,6 @@
 	wait_for_completion(&card->done);
 
 	WARN_ON(!list_empty(&card->transaction_list));
-	del_timer_sync(&card->flush_timer);
 }
 EXPORT_SYMBOL(fw_core_remove_card);
 
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 14a34d9..5bf106b 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -227,7 +227,7 @@
 	list_add_tail(&client->link, &device->client_list);
 	mutex_unlock(&device->client_list_mutex);
 
-	return 0;
+	return nonseekable_open(inode, file);
 }
 
 static void queue_event(struct client *client, struct event *event,
@@ -1496,13 +1496,13 @@
 
 const struct file_operations fw_device_ops = {
 	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
 	.open		= fw_device_op_open,
 	.read		= fw_device_op_read,
 	.unlocked_ioctl	= fw_device_op_ioctl,
-	.poll		= fw_device_op_poll,
-	.release	= fw_device_op_release,
 	.mmap		= fw_device_op_mmap,
-
+	.release	= fw_device_op_release,
+	.poll		= fw_device_op_poll,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= fw_device_op_compat_ioctl,
 #endif
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index 673b03f..fdc33ff 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -81,7 +81,7 @@
 	spin_lock_irqsave(&card->lock, flags);
 	list_for_each_entry(t, &card->transaction_list, link) {
 		if (t == transaction) {
-			list_del(&t->link);
+			list_del_init(&t->link);
 			card->tlabel_mask &= ~(1ULL << t->tlabel);
 			break;
 		}
@@ -89,6 +89,7 @@
 	spin_unlock_irqrestore(&card->lock, flags);
 
 	if (&t->link != &card->transaction_list) {
+		del_timer_sync(&t->split_timeout_timer);
 		t->callback(card, rcode, NULL, 0, t->callback_data);
 		return 0;
 	}
@@ -121,6 +122,31 @@
 }
 EXPORT_SYMBOL(fw_cancel_transaction);
 
+static void split_transaction_timeout_callback(unsigned long data)
+{
+	struct fw_transaction *t = (struct fw_transaction *)data;
+	struct fw_card *card = t->card;
+	unsigned long flags;
+
+	spin_lock_irqsave(&card->lock, flags);
+	if (list_empty(&t->link)) {
+		spin_unlock_irqrestore(&card->lock, flags);
+		return;
+	}
+	list_del(&t->link);
+	card->tlabel_mask &= ~(1ULL << t->tlabel);
+	spin_unlock_irqrestore(&card->lock, flags);
+
+	card->driver->cancel_packet(card, &t->packet);
+
+	/*
+	 * At this point cancel_packet will never call the transaction
+	 * callback, since we just took the transaction out of the list.
+	 * So do it here.
+	 */
+	t->callback(card, RCODE_CANCELLED, NULL, 0, t->callback_data);
+}
+
 static void transmit_complete_callback(struct fw_packet *packet,
 				       struct fw_card *card, int status)
 {
@@ -229,6 +255,23 @@
 	packet->payload_mapped = false;
 }
 
+static int allocate_tlabel(struct fw_card *card)
+{
+	int tlabel;
+
+	tlabel = card->current_tlabel;
+	while (card->tlabel_mask & (1ULL << tlabel)) {
+		tlabel = (tlabel + 1) & 0x3f;
+		if (tlabel == card->current_tlabel)
+			return -EBUSY;
+	}
+
+	card->current_tlabel = (tlabel + 1) & 0x3f;
+	card->tlabel_mask |= 1ULL << tlabel;
+
+	return tlabel;
+}
+
 /**
  * This function provides low-level access to the IEEE1394 transaction
  * logic.  Most C programs would use either fw_read(), fw_write() or
@@ -277,31 +320,26 @@
 	int tlabel;
 
 	/*
-	 * Bump the flush timer up 100ms first of all so we
-	 * don't race with a flush timer callback.
-	 */
-
-	mod_timer(&card->flush_timer, jiffies + DIV_ROUND_UP(HZ, 10));
-
-	/*
 	 * Allocate tlabel from the bitmap and put the transaction on
 	 * the list while holding the card spinlock.
 	 */
 
 	spin_lock_irqsave(&card->lock, flags);
 
-	tlabel = card->current_tlabel;
-	if (card->tlabel_mask & (1ULL << tlabel)) {
+	tlabel = allocate_tlabel(card);
+	if (tlabel < 0) {
 		spin_unlock_irqrestore(&card->lock, flags);
 		callback(card, RCODE_SEND_ERROR, NULL, 0, callback_data);
 		return;
 	}
 
-	card->current_tlabel = (card->current_tlabel + 1) & 0x3f;
-	card->tlabel_mask |= (1ULL << tlabel);
-
 	t->node_id = destination_id;
 	t->tlabel = tlabel;
+	t->card = card;
+	setup_timer(&t->split_timeout_timer,
+		    split_transaction_timeout_callback, (unsigned long)t);
+	/* FIXME: start this timer later, relative to t->timestamp */
+	mod_timer(&t->split_timeout_timer, jiffies + DIV_ROUND_UP(HZ, 10));
 	t->callback = callback;
 	t->callback_data = callback_data;
 
@@ -347,11 +385,13 @@
 	struct transaction_callback_data d;
 	struct fw_transaction t;
 
+	init_timer_on_stack(&t.split_timeout_timer);
 	init_completion(&d.done);
 	d.payload = payload;
 	fw_send_request(card, &t, tcode, destination_id, generation, speed,
 			offset, payload, length, transaction_callback, &d);
 	wait_for_completion(&d.done);
+	destroy_timer_on_stack(&t.split_timeout_timer);
 
 	return d.rcode;
 }
@@ -394,30 +434,6 @@
 	mutex_unlock(&phy_config_mutex);
 }
 
-void fw_flush_transactions(struct fw_card *card)
-{
-	struct fw_transaction *t, *next;
-	struct list_head list;
-	unsigned long flags;
-
-	INIT_LIST_HEAD(&list);
-	spin_lock_irqsave(&card->lock, flags);
-	list_splice_init(&card->transaction_list, &list);
-	card->tlabel_mask = 0;
-	spin_unlock_irqrestore(&card->lock, flags);
-
-	list_for_each_entry_safe(t, next, &list, link) {
-		card->driver->cancel_packet(card, &t->packet);
-
-		/*
-		 * At this point cancel_packet will never call the
-		 * transaction callback, since we just took all the
-		 * transactions out of the list.  So do it here.
-		 */
-		t->callback(card, RCODE_CANCELLED, NULL, 0, t->callback_data);
-	}
-}
-
 static struct fw_address_handler *lookup_overlapping_address_handler(
 	struct list_head *list, unsigned long long offset, size_t length)
 {
@@ -827,8 +843,8 @@
 	spin_lock_irqsave(&card->lock, flags);
 	list_for_each_entry(t, &card->transaction_list, link) {
 		if (t->node_id == source && t->tlabel == tlabel) {
-			list_del(&t->link);
-			card->tlabel_mask &= ~(1 << t->tlabel);
+			list_del_init(&t->link);
+			card->tlabel_mask &= ~(1ULL << t->tlabel);
 			break;
 		}
 	}
@@ -869,6 +885,8 @@
 		break;
 	}
 
+	del_timer_sync(&t->split_timeout_timer);
+
 	/*
 	 * The response handler may be executed while the request handler
 	 * is still pending.  Cancel the request handler.
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index fb03213..0ecfcd9 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -27,7 +27,12 @@
 #define PHY_LINK_ACTIVE		0x80
 #define PHY_CONTENDER		0x40
 #define PHY_BUS_RESET		0x40
+#define PHY_EXTENDED_REGISTERS	0xe0
 #define PHY_BUS_SHORT_RESET	0x40
+#define PHY_INT_STATUS_BITS	0x3c
+#define PHY_ENABLE_ACCEL	0x02
+#define PHY_ENABLE_MULTI	0x01
+#define PHY_PAGE_SELECT		0xe0
 
 #define BANDWIDTH_AVAILABLE_INITIAL	4915
 #define BROADCAST_CHANNEL_INITIAL	(1 << 31 | 31)
@@ -215,7 +220,6 @@
 void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet);
 void fw_fill_response(struct fw_packet *response, u32 *request_header,
 		      int rcode, void *payload, size_t length);
-void fw_flush_transactions(struct fw_card *card);
 void fw_send_phy_config(struct fw_card *card,
 			int node_id, int generation, int gap_count);
 
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index a3b083a..9f627e7 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -236,13 +236,15 @@
 #define QUIRK_CYCLE_TIMER		1
 #define QUIRK_RESET_PACKET		2
 #define QUIRK_BE_HEADERS		4
+#define QUIRK_NO_1394A			8
 
 /* In case of multiple matches in ohci_quirks[], only the first one is used. */
 static const struct {
 	unsigned short vendor, device, flags;
 } ohci_quirks[] = {
 	{PCI_VENDOR_ID_TI,	PCI_DEVICE_ID_TI_TSB12LV22, QUIRK_CYCLE_TIMER |
-							    QUIRK_RESET_PACKET},
+							    QUIRK_RESET_PACKET |
+							    QUIRK_NO_1394A},
 	{PCI_VENDOR_ID_TI,	PCI_ANY_ID,	QUIRK_RESET_PACKET},
 	{PCI_VENDOR_ID_AL,	PCI_ANY_ID,	QUIRK_CYCLE_TIMER},
 	{PCI_VENDOR_ID_NEC,	PCI_ANY_ID,	QUIRK_CYCLE_TIMER},
@@ -257,15 +259,16 @@
 	", nonatomic cycle timer = "	__stringify(QUIRK_CYCLE_TIMER)
 	", reset packet generation = "	__stringify(QUIRK_RESET_PACKET)
 	", AR/selfID endianess = "	__stringify(QUIRK_BE_HEADERS)
+	", no 1394a enhancements = "	__stringify(QUIRK_NO_1394A)
 	")");
 
-#ifdef CONFIG_FIREWIRE_OHCI_DEBUG
-
 #define OHCI_PARAM_DEBUG_AT_AR		1
 #define OHCI_PARAM_DEBUG_SELFIDS	2
 #define OHCI_PARAM_DEBUG_IRQS		4
 #define OHCI_PARAM_DEBUG_BUSRESETS	8 /* only effective before chip init */
 
+#ifdef CONFIG_FIREWIRE_OHCI_DEBUG
+
 static int param_debug;
 module_param_named(debug, param_debug, int, 0644);
 MODULE_PARM_DESC(debug, "Verbose logging (default = 0"
@@ -438,9 +441,10 @@
 
 #else
 
-#define log_irqs(evt)
-#define log_selfids(node_id, generation, self_id_count, sid)
-#define log_ar_at_event(dir, speed, header, evt)
+#define param_debug 0
+static inline void log_irqs(u32 evt) {}
+static inline void log_selfids(int node_id, int generation, int self_id_count, u32 *s) {}
+static inline void log_ar_at_event(char dir, int speed, u32 *header, int evt) {}
 
 #endif /* CONFIG_FIREWIRE_OHCI_DEBUG */
 
@@ -460,27 +464,71 @@
 	reg_read(ohci, OHCI1394_Version);
 }
 
+static int read_phy_reg(struct fw_ohci *ohci, int addr)
+{
+	u32 val;
+	int i;
+
+	reg_write(ohci, OHCI1394_PhyControl, OHCI1394_PhyControl_Read(addr));
+	for (i = 0; i < 10; i++) {
+		val = reg_read(ohci, OHCI1394_PhyControl);
+		if (val & OHCI1394_PhyControl_ReadDone)
+			return OHCI1394_PhyControl_ReadData(val);
+
+		msleep(1);
+	}
+	fw_error("failed to read phy reg\n");
+
+	return -EBUSY;
+}
+
+static int write_phy_reg(const struct fw_ohci *ohci, int addr, u32 val)
+{
+	int i;
+
+	reg_write(ohci, OHCI1394_PhyControl,
+		  OHCI1394_PhyControl_Write(addr, val));
+	for (i = 0; i < 100; i++) {
+		val = reg_read(ohci, OHCI1394_PhyControl);
+		if (!(val & OHCI1394_PhyControl_WritePending))
+			return 0;
+
+		msleep(1);
+	}
+	fw_error("failed to write phy reg\n");
+
+	return -EBUSY;
+}
+
 static int ohci_update_phy_reg(struct fw_card *card, int addr,
 			       int clear_bits, int set_bits)
 {
 	struct fw_ohci *ohci = fw_ohci(card);
-	u32 val, old;
+	int ret;
 
-	reg_write(ohci, OHCI1394_PhyControl, OHCI1394_PhyControl_Read(addr));
-	flush_writes(ohci);
-	msleep(2);
-	val = reg_read(ohci, OHCI1394_PhyControl);
-	if ((val & OHCI1394_PhyControl_ReadDone) == 0) {
-		fw_error("failed to set phy reg bits.\n");
-		return -EBUSY;
-	}
+	ret = read_phy_reg(ohci, addr);
+	if (ret < 0)
+		return ret;
 
-	old = OHCI1394_PhyControl_ReadData(val);
-	old = (old & ~clear_bits) | set_bits;
-	reg_write(ohci, OHCI1394_PhyControl,
-		  OHCI1394_PhyControl_Write(addr, old));
+	/*
+	 * The interrupt status bits are cleared by writing a one bit.
+	 * Avoid clearing them unless explicitly requested in set_bits.
+	 */
+	if (addr == 5)
+		clear_bits |= PHY_INT_STATUS_BITS;
 
-	return 0;
+	return write_phy_reg(ohci, addr, (ret & ~clear_bits) | set_bits);
+}
+
+static int read_paged_phy_reg(struct fw_ohci *ohci, int page, int addr)
+{
+	int ret;
+
+	ret = ohci_update_phy_reg(&ohci->card, 7, PHY_PAGE_SELECT, page << 5);
+	if (ret < 0)
+		return ret;
+
+	return read_phy_reg(ohci, addr);
 }
 
 static int ar_context_add_page(struct ar_context *ctx)
@@ -1495,13 +1543,64 @@
 		memset(&dest[length], 0, CONFIG_ROM_SIZE - size);
 }
 
+static int configure_1394a_enhancements(struct fw_ohci *ohci)
+{
+	bool enable_1394a;
+	int ret, clear, set, offset;
+
+	/* Check if the driver should configure link and PHY. */
+	if (!(reg_read(ohci, OHCI1394_HCControlSet) &
+	      OHCI1394_HCControl_programPhyEnable))
+		return 0;
+
+	/* Paranoia: check whether the PHY supports 1394a, too. */
+	enable_1394a = false;
+	ret = read_phy_reg(ohci, 2);
+	if (ret < 0)
+		return ret;
+	if ((ret & PHY_EXTENDED_REGISTERS) == PHY_EXTENDED_REGISTERS) {
+		ret = read_paged_phy_reg(ohci, 1, 8);
+		if (ret < 0)
+			return ret;
+		if (ret >= 1)
+			enable_1394a = true;
+	}
+
+	if (ohci->quirks & QUIRK_NO_1394A)
+		enable_1394a = false;
+
+	/* Configure PHY and link consistently. */
+	if (enable_1394a) {
+		clear = 0;
+		set = PHY_ENABLE_ACCEL | PHY_ENABLE_MULTI;
+	} else {
+		clear = PHY_ENABLE_ACCEL | PHY_ENABLE_MULTI;
+		set = 0;
+	}
+	ret = ohci_update_phy_reg(&ohci->card, 5, clear, set);
+	if (ret < 0)
+		return ret;
+
+	if (enable_1394a)
+		offset = OHCI1394_HCControlSet;
+	else
+		offset = OHCI1394_HCControlClear;
+	reg_write(ohci, offset, OHCI1394_HCControl_aPhyEnhanceEnable);
+
+	/* Clean up: configuration has been taken care of. */
+	reg_write(ohci, OHCI1394_HCControlClear,
+		  OHCI1394_HCControl_programPhyEnable);
+
+	return 0;
+}
+
 static int ohci_enable(struct fw_card *card,
 		       const __be32 *config_rom, size_t length)
 {
 	struct fw_ohci *ohci = fw_ohci(card);
 	struct pci_dev *dev = to_pci_dev(card->device);
 	u32 lps;
-	int i;
+	int i, ret;
 
 	if (software_reset(ohci)) {
 		fw_error("Failed to reset ohci card.\n");
@@ -1565,10 +1664,14 @@
 	if (param_debug & OHCI_PARAM_DEBUG_BUSRESETS)
 		reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_busReset);
 
+	ret = configure_1394a_enhancements(ohci);
+	if (ret < 0)
+		return ret;
+
 	/* Activate link_on bit and contender bit in our self ID packets.*/
-	if (ohci_update_phy_reg(card, 4, 0,
-				PHY_LINK_ACTIVE | PHY_CONTENDER) < 0)
-		return -EIO;
+	ret = ohci_update_phy_reg(card, 4, 0, PHY_LINK_ACTIVE | PHY_CONTENDER);
+	if (ret < 0)
+		return ret;
 
 	/*
 	 * When the link is not yet enabled, the atomic config rom
@@ -2304,7 +2407,7 @@
 };
 
 #ifdef CONFIG_PPC_PMAC
-static void ohci_pmac_on(struct pci_dev *dev)
+static void pmac_ohci_on(struct pci_dev *dev)
 {
 	if (machine_is(powermac)) {
 		struct device_node *ofn = pci_device_to_OF_node(dev);
@@ -2316,7 +2419,7 @@
 	}
 }
 
-static void ohci_pmac_off(struct pci_dev *dev)
+static void pmac_ohci_off(struct pci_dev *dev)
 {
 	if (machine_is(powermac)) {
 		struct device_node *ofn = pci_device_to_OF_node(dev);
@@ -2328,15 +2431,15 @@
 	}
 }
 #else
-#define ohci_pmac_on(dev)
-#define ohci_pmac_off(dev)
+static inline void pmac_ohci_on(struct pci_dev *dev) {}
+static inline void pmac_ohci_off(struct pci_dev *dev) {}
 #endif /* CONFIG_PPC_PMAC */
 
 static int __devinit pci_probe(struct pci_dev *dev,
 			       const struct pci_device_id *ent)
 {
 	struct fw_ohci *ohci;
-	u32 bus_options, max_receive, link_speed, version;
+	u32 bus_options, max_receive, link_speed, version, link_enh;
 	u64 guid;
 	int i, err, n_ir, n_it;
 	size_t size;
@@ -2349,7 +2452,7 @@
 
 	fw_card_initialize(&ohci->card, &ohci_driver, &dev->dev);
 
-	ohci_pmac_on(dev);
+	pmac_ohci_on(dev);
 
 	err = pci_enable_device(dev);
 	if (err) {
@@ -2389,6 +2492,23 @@
 	if (param_quirks)
 		ohci->quirks = param_quirks;
 
+	/* TI OHCI-Lynx and compatible: set recommended configuration bits. */
+	if (dev->vendor == PCI_VENDOR_ID_TI) {
+		pci_read_config_dword(dev, PCI_CFG_TI_LinkEnh, &link_enh);
+
+		/* adjust latency of ATx FIFO: use 1.7 KB threshold */
+		link_enh &= ~TI_LinkEnh_atx_thresh_mask;
+		link_enh |= TI_LinkEnh_atx_thresh_1_7K;
+
+		/* use priority arbitration for asynchronous responses */
+		link_enh |= TI_LinkEnh_enab_unfair;
+
+		/* required for aPhyEnhanceEnable to work */
+		link_enh |= TI_LinkEnh_enab_accel;
+
+		pci_write_config_dword(dev, PCI_CFG_TI_LinkEnh, link_enh);
+	}
+
 	ar_context_init(&ohci->ar_request_ctx, ohci,
 			OHCI1394_AsReqRcvContextControlSet);
 
@@ -2466,7 +2586,7 @@
 	pci_disable_device(dev);
  fail_free:
 	kfree(&ohci->card);
-	ohci_pmac_off(dev);
+	pmac_ohci_off(dev);
  fail:
 	if (err == -ENOMEM)
 		fw_error("Out of memory\n");
@@ -2509,7 +2629,7 @@
 	pci_release_region(dev, 0);
 	pci_disable_device(dev);
 	kfree(&ohci->card);
-	ohci_pmac_off(dev);
+	pmac_ohci_off(dev);
 
 	fw_notify("Removed fw-ohci device.\n");
 }
@@ -2530,7 +2650,7 @@
 	err = pci_set_power_state(dev, pci_choose_state(dev, state));
 	if (err)
 		fw_error("pci_set_power_state failed with %d\n", err);
-	ohci_pmac_off(dev);
+	pmac_ohci_off(dev);
 
 	return 0;
 }
@@ -2540,7 +2660,7 @@
 	struct fw_ohci *ohci = pci_get_drvdata(dev);
 	int err;
 
-	ohci_pmac_on(dev);
+	pmac_ohci_on(dev);
 	pci_set_power_state(dev, PCI_D0);
 	pci_restore_state(dev);
 	err = pci_enable_device(dev);
diff --git a/drivers/firewire/ohci.h b/drivers/firewire/ohci.h
index ba492d8..3bc9a5d 100644
--- a/drivers/firewire/ohci.h
+++ b/drivers/firewire/ohci.h
@@ -67,7 +67,7 @@
 #define   OHCI1394_PhyControl_ReadDone		0x80000000
 #define   OHCI1394_PhyControl_ReadData(r)	(((r) & 0x00ff0000) >> 16)
 #define   OHCI1394_PhyControl_Write(addr, data)	(((addr) << 8) | (data) | 0x00004000)
-#define   OHCI1394_PhyControl_WriteDone		0x00004000
+#define   OHCI1394_PhyControl_WritePending	0x00004000
 #define OHCI1394_IsochronousCycleTimer        0x0F0
 #define OHCI1394_AsReqFilterHiSet             0x100
 #define OHCI1394_AsReqFilterHiClear           0x104
@@ -154,4 +154,12 @@
 
 #define OHCI1394_phy_tcode		0xe
 
+/* TI extensions */
+
+#define PCI_CFG_TI_LinkEnh		0xf4
+#define  TI_LinkEnh_enab_accel		0x00000002
+#define  TI_LinkEnh_enab_unfair		0x00000080
+#define  TI_LinkEnh_atx_thresh_mask	0x00003000
+#define  TI_LinkEnh_atx_thresh_1_7K	0x00001000
+
 #endif /* _FIREWIRE_OHCI_H */
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index fee678f..4fd0f27 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -139,6 +139,13 @@
 	  Board setup code must specify the model to use, and the start
 	  number for these GPIOs.
 
+config GPIO_MAX732X_IRQ
+	bool "Interrupt controller support for MAX732x"
+	depends on GPIO_MAX732X=y && GENERIC_HARDIRQS
+	help
+	  Say yes here to enable the max732x to be used as an interrupt
+	  controller. It requires the driver to be built in the kernel.
+
 config GPIO_PCA953X
 	tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
 	depends on I2C
@@ -264,10 +271,10 @@
 	  If unsure, say N.
 
 config GPIO_LANGWELL
-	bool "Intel Moorestown Platform Langwell GPIO support"
+	bool "Intel Langwell/Penwell GPIO support"
 	depends on PCI
 	help
-	  Say Y here to support Intel Moorestown platform GPIO.
+	  Say Y here to support Intel Langwell/Penwell GPIO.
 
 config GPIO_TIMBERDALE
 	bool "Support for timberdale GPIO IP"
diff --git a/drivers/gpio/cs5535-gpio.c b/drivers/gpio/cs5535-gpio.c
index 0c3c498..f73a155 100644
--- a/drivers/gpio/cs5535-gpio.c
+++ b/drivers/gpio/cs5535-gpio.c
@@ -197,7 +197,7 @@
 	return 0;
 }
 
-static char *cs5535_gpio_names[] = {
+static const char * const cs5535_gpio_names[] = {
 	"GPIO0", "GPIO1", "GPIO2", "GPIO3",
 	"GPIO4", "GPIO5", "GPIO6", "GPIO7",
 	"GPIO8", "GPIO9", "GPIO10", "GPIO11",
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index cae1b8c..3ca3654 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -722,7 +722,7 @@
 	unsigned long		flags;
 	struct gpio_desc	*desc;
 	int			status = -EINVAL;
-	char			*ioname = NULL;
+	const char		*ioname = NULL;
 
 	/* can't export until sysfs is available ... */
 	if (!gpio_class.p) {
@@ -753,7 +753,7 @@
 		struct device	*dev;
 
 		dev = device_create(&gpio_class, desc->chip->dev, MKDEV(0, 0),
-				desc, ioname ? ioname : "gpio%d", gpio);
+				desc, ioname ? ioname : "gpio%u", gpio);
 		if (!IS_ERR(dev)) {
 			status = sysfs_create_group(&dev->kobj,
 						&gpio_attr_group);
@@ -1106,7 +1106,7 @@
 fail:
 	/* failures here can mean systems won't boot... */
 	if (status)
-		pr_err("gpiochip_add: gpios %d..%d (%s) not registered\n",
+		pr_err("gpiochip_add: gpios %d..%d (%s) failed to register\n",
 			chip->base, chip->base + chip->ngpio - 1,
 			chip->label ? : "generic");
 	return status;
@@ -1447,6 +1447,49 @@
 }
 EXPORT_SYMBOL_GPL(gpio_direction_output);
 
+/**
+ * gpio_set_debounce - sets @debounce time for a @gpio
+ * @gpio: the gpio to set debounce time
+ * @debounce: debounce time is microseconds
+ */
+int gpio_set_debounce(unsigned gpio, unsigned debounce)
+{
+	unsigned long		flags;
+	struct gpio_chip	*chip;
+	struct gpio_desc	*desc = &gpio_desc[gpio];
+	int			status = -EINVAL;
+
+	spin_lock_irqsave(&gpio_lock, flags);
+
+	if (!gpio_is_valid(gpio))
+		goto fail;
+	chip = desc->chip;
+	if (!chip || !chip->set || !chip->set_debounce)
+		goto fail;
+	gpio -= chip->base;
+	if (gpio >= chip->ngpio)
+		goto fail;
+	status = gpio_ensure_requested(desc, gpio);
+	if (status < 0)
+		goto fail;
+
+	/* now we know the gpio is valid and chip won't vanish */
+
+	spin_unlock_irqrestore(&gpio_lock, flags);
+
+	might_sleep_if(extra_checks && chip->can_sleep);
+
+	return chip->set_debounce(chip, gpio, debounce);
+
+fail:
+	spin_unlock_irqrestore(&gpio_lock, flags);
+	if (status)
+		pr_debug("%s: gpio-%d status %d\n",
+			__func__, gpio, status);
+
+	return status;
+}
+EXPORT_SYMBOL_GPL(gpio_set_debounce);
 
 /* I/O calls are only valid after configuration completed; the relevant
  * "is this a valid GPIO" error checks should already have been done.
diff --git a/drivers/gpio/it8761e_gpio.c b/drivers/gpio/it8761e_gpio.c
index 41a9388..48fc43c 100644
--- a/drivers/gpio/it8761e_gpio.c
+++ b/drivers/gpio/it8761e_gpio.c
@@ -217,7 +217,10 @@
 static void __exit it8761e_gpio_exit(void)
 {
 	if (gpio_ba) {
-		gpiochip_remove(&it8761e_gpio_chip);
+		int ret = gpiochip_remove(&it8761e_gpio_chip);
+
+		WARN(ret, "%s(): gpiochip_remove() failed, ret=%d\n",
+				__func__, ret);
 
 		release_region(gpio_ba, GPIO_IOSIZE);
 		gpio_ba = 0;
diff --git a/drivers/gpio/langwell_gpio.c b/drivers/gpio/langwell_gpio.c
index 00c3a14..8383a8d 100644
--- a/drivers/gpio/langwell_gpio.c
+++ b/drivers/gpio/langwell_gpio.c
@@ -17,6 +17,7 @@
 
 /* Supports:
  * Moorestown platform Langwell chip.
+ * Medfield platform Penwell chip.
  */
 
 #include <linux/module.h>
@@ -31,44 +32,65 @@
 #include <linux/gpio.h>
 #include <linux/slab.h>
 
-struct lnw_gpio_register {
-	u32	GPLR[2];
-	u32	GPDR[2];
-	u32	GPSR[2];
-	u32	GPCR[2];
-	u32	GRER[2];
-	u32	GFER[2];
-	u32	GEDR[2];
+/*
+ * Langwell chip has 64 pins and thus there are 2 32bit registers to control
+ * each feature, while Penwell chip has 96 pins for each block, and need 3 32bit
+ * registers to control them, so we only define the order here instead of a
+ * structure, to get a bit offset for a pin (use GPDR as an example):
+ *
+ * nreg = ngpio / 32;
+ * reg = offset / 32;
+ * bit = offset % 32;
+ * reg_addr = reg_base + GPDR * nreg * 4 + reg * 4;
+ *
+ * so the bit of reg_addr is to control pin offset's GPDR feature
+*/
+
+enum GPIO_REG {
+	GPLR = 0,	/* pin level read-only */
+	GPDR,		/* pin direction */
+	GPSR,		/* pin set */
+	GPCR,		/* pin clear */
+	GRER,		/* rising edge detect */
+	GFER,		/* falling edge detect */
+	GEDR,		/* edge detect result */
 };
 
 struct lnw_gpio {
 	struct gpio_chip		chip;
-	struct lnw_gpio_register 	*reg_base;
+	void				*reg_base;
 	spinlock_t			lock;
 	unsigned			irq_base;
 };
 
-static int lnw_gpio_get(struct gpio_chip *chip, unsigned offset)
+static void __iomem *gpio_reg(struct gpio_chip *chip, unsigned offset,
+			enum GPIO_REG reg_type)
 {
 	struct lnw_gpio *lnw = container_of(chip, struct lnw_gpio, chip);
+	unsigned nreg = chip->ngpio / 32;
 	u8 reg = offset / 32;
-	void __iomem *gplr;
+	void __iomem *ptr;
 
-	gplr = (void __iomem *)(&lnw->reg_base->GPLR[reg]);
+	ptr = (void __iomem *)(lnw->reg_base + reg_type * nreg * 4 + reg * 4);
+	return ptr;
+}
+
+static int lnw_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	void __iomem *gplr = gpio_reg(chip, offset, GPLR);
+
 	return readl(gplr) & BIT(offset % 32);
 }
 
 static void lnw_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
-	struct lnw_gpio *lnw = container_of(chip, struct lnw_gpio, chip);
-	u8 reg = offset / 32;
 	void __iomem *gpsr, *gpcr;
 
 	if (value) {
-		gpsr = (void __iomem *)(&lnw->reg_base->GPSR[reg]);
+		gpsr = gpio_reg(chip, offset, GPSR);
 		writel(BIT(offset % 32), gpsr);
 	} else {
-		gpcr = (void __iomem *)(&lnw->reg_base->GPCR[reg]);
+		gpcr = gpio_reg(chip, offset, GPCR);
 		writel(BIT(offset % 32), gpcr);
 	}
 }
@@ -76,12 +98,10 @@
 static int lnw_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	struct lnw_gpio *lnw = container_of(chip, struct lnw_gpio, chip);
-	u8 reg = offset / 32;
+	void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
 	u32 value;
 	unsigned long flags;
-	void __iomem *gpdr;
 
-	gpdr = (void __iomem *)(&lnw->reg_base->GPDR[reg]);
 	spin_lock_irqsave(&lnw->lock, flags);
 	value = readl(gpdr);
 	value &= ~BIT(offset % 32);
@@ -94,12 +114,10 @@
 			unsigned offset, int value)
 {
 	struct lnw_gpio *lnw = container_of(chip, struct lnw_gpio, chip);
-	u8 reg = offset / 32;
+	void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
 	unsigned long flags;
-	void __iomem *gpdr;
 
 	lnw_gpio_set(chip, offset, value);
-	gpdr = (void __iomem *)(&lnw->reg_base->GPDR[reg]);
 	spin_lock_irqsave(&lnw->lock, flags);
 	value = readl(gpdr);
 	value |= BIT(offset % 32);;
@@ -118,11 +136,10 @@
 {
 	struct lnw_gpio *lnw = get_irq_chip_data(irq);
 	u32 gpio = irq - lnw->irq_base;
-	u8 reg = gpio / 32;
 	unsigned long flags;
 	u32 value;
-	void __iomem *grer = (void __iomem *)(&lnw->reg_base->GRER[reg]);
-	void __iomem *gfer = (void __iomem *)(&lnw->reg_base->GFER[reg]);
+	void __iomem *grer = gpio_reg(&lnw->chip, gpio, GRER);
+	void __iomem *gfer = gpio_reg(&lnw->chip, gpio, GFER);
 
 	if (gpio >= lnw->chip.ngpio)
 		return -EINVAL;
@@ -158,8 +175,10 @@
 	.set_type	= lnw_irq_type,
 };
 
-static struct pci_device_id lnw_gpio_ids[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080f) },
+static DEFINE_PCI_DEVICE_TABLE(lnw_gpio_ids) = {   /* pin number */
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080f), .driver_data = 64 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x081f), .driver_data = 96 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x081a), .driver_data = 96 },
 	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, lnw_gpio_ids);
@@ -167,17 +186,17 @@
 static void lnw_irq_handler(unsigned irq, struct irq_desc *desc)
 {
 	struct lnw_gpio *lnw = (struct lnw_gpio *)get_irq_data(irq);
-	u32 reg, gpio;
+	u32 base, gpio;
 	void __iomem *gedr;
 	u32 gedr_v;
 
 	/* check GPIO controller to check which pin triggered the interrupt */
-	for (reg = 0; reg < lnw->chip.ngpio / 32; reg++) {
-		gedr = (void __iomem *)(&lnw->reg_base->GEDR[reg]);
+	for (base = 0; base < lnw->chip.ngpio; base += 32) {
+		gedr = gpio_reg(&lnw->chip, base, GEDR);
 		gedr_v = readl(gedr);
 		if (!gedr_v)
 			continue;
-		for (gpio = reg*32; gpio < reg*32+32; gpio++)
+		for (gpio = base; gpio < base + 32; gpio++)
 			if (gedr_v & BIT(gpio % 32)) {
 				pr_debug("pin %d triggered\n", gpio);
 				generic_handle_irq(lnw->irq_base + gpio);
@@ -245,7 +264,7 @@
 	lnw->chip.set = lnw_gpio_set;
 	lnw->chip.to_irq = lnw_gpio_to_irq;
 	lnw->chip.base = gpio_base;
-	lnw->chip.ngpio = 64;
+	lnw->chip.ngpio = id->driver_data;
 	lnw->chip.can_sleep = 0;
 	pci_set_drvdata(pdev, lnw);
 	retval = gpiochip_add(&lnw->chip);
diff --git a/drivers/gpio/max732x.c b/drivers/gpio/max732x.c
index f786824..9cad60f 100644
--- a/drivers/gpio/max732x.c
+++ b/drivers/gpio/max732x.c
@@ -17,7 +17,8 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/gpio.h>
-
+#include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/i2c.h>
 #include <linux/i2c/max732x.h>
 
@@ -31,7 +32,8 @@
  *   - Open Drain I/O
  *
  * designated by 'O', 'I' and 'P' individually according to MAXIM's
- * datasheets.
+ * datasheets. 'I' and 'P' ports are interrupt capables, some with
+ * a dedicated interrupt mask.
  *
  * There are two groups of I/O ports, each group usually includes
  * up to 8 I/O ports, and is accessed by a specific I2C address:
@@ -44,7 +46,8 @@
  *
  * Within each group of ports, there are five known combinations of
  * I/O ports: 4I4O, 4P4O, 8I, 8P, 8O, see the definitions below for
- * the detailed organization of these ports.
+ * the detailed organization of these ports. Only Goup A is interrupt
+ * capable.
  *
  * GPIO numbers start from 'gpio_base + 0' to 'gpio_base + 8/16',
  * and GPIOs from GROUP_A are numbered before those from GROUP_B
@@ -68,16 +71,47 @@
 #define GROUP_A(x)	((x) & 0xffff)	/* I2C Addr: 0b'110xxxx */
 #define GROUP_B(x)	((x) << 16)	/* I2C Addr: 0b'101xxxx */
 
+#define INT_NONE	0x0	/* No interrupt capability */
+#define INT_NO_MASK	0x1	/* Has interrupts, no mask */
+#define INT_INDEP_MASK	0x2	/* Has interrupts, independent mask */
+#define INT_MERGED_MASK 0x3	/* Has interrupts, merged mask */
+
+#define INT_CAPS(x)	(((uint64_t)(x)) << 32)
+
+enum {
+	MAX7319,
+	MAX7320,
+	MAX7321,
+	MAX7322,
+	MAX7323,
+	MAX7324,
+	MAX7325,
+	MAX7326,
+	MAX7327,
+};
+
+static uint64_t max732x_features[] = {
+	[MAX7319] = GROUP_A(IO_8I) | INT_CAPS(INT_MERGED_MASK),
+	[MAX7320] = GROUP_B(IO_8O),
+	[MAX7321] = GROUP_A(IO_8P) | INT_CAPS(INT_NO_MASK),
+	[MAX7322] = GROUP_A(IO_4I4O) | INT_CAPS(INT_MERGED_MASK),
+	[MAX7323] = GROUP_A(IO_4P4O) | INT_CAPS(INT_INDEP_MASK),
+	[MAX7324] = GROUP_A(IO_8I) | GROUP_B(IO_8O) | INT_CAPS(INT_MERGED_MASK),
+	[MAX7325] = GROUP_A(IO_8P) | GROUP_B(IO_8O) | INT_CAPS(INT_NO_MASK),
+	[MAX7326] = GROUP_A(IO_4I4O) | GROUP_B(IO_8O) | INT_CAPS(INT_MERGED_MASK),
+	[MAX7327] = GROUP_A(IO_4P4O) | GROUP_B(IO_8O) | INT_CAPS(INT_NO_MASK),
+};
+
 static const struct i2c_device_id max732x_id[] = {
-	{ "max7319", GROUP_A(IO_8I) },
-	{ "max7320", GROUP_B(IO_8O) },
-	{ "max7321", GROUP_A(IO_8P) },
-	{ "max7322", GROUP_A(IO_4I4O) },
-	{ "max7323", GROUP_A(IO_4P4O) },
-	{ "max7324", GROUP_A(IO_8I) | GROUP_B(IO_8O) },
-	{ "max7325", GROUP_A(IO_8P) | GROUP_B(IO_8O) },
-	{ "max7326", GROUP_A(IO_4I4O) | GROUP_B(IO_8O) },
-	{ "max7327", GROUP_A(IO_4P4O) | GROUP_B(IO_8O) },
+	{ "max7319", MAX7319 },
+	{ "max7320", MAX7320 },
+	{ "max7321", MAX7321 },
+	{ "max7322", MAX7322 },
+	{ "max7323", MAX7323 },
+	{ "max7324", MAX7324 },
+	{ "max7325", MAX7325 },
+	{ "max7326", MAX7326 },
+	{ "max7327", MAX7327 },
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, max732x_id);
@@ -96,9 +130,19 @@
 
 	struct mutex	lock;
 	uint8_t		reg_out[2];
+
+#ifdef CONFIG_GPIO_MAX732X_IRQ
+	struct mutex	irq_lock;
+	int		irq_base;
+	uint8_t		irq_mask;
+	uint8_t		irq_mask_cur;
+	uint8_t		irq_trig_raise;
+	uint8_t		irq_trig_fall;
+	uint8_t		irq_features;
+#endif
 };
 
-static int max732x_write(struct max732x_chip *chip, int group_a, uint8_t val)
+static int max732x_writeb(struct max732x_chip *chip, int group_a, uint8_t val)
 {
 	struct i2c_client *client;
 	int ret;
@@ -113,7 +157,7 @@
 	return 0;
 }
 
-static int max732x_read(struct max732x_chip *chip, int group_a, uint8_t *val)
+static int max732x_readb(struct max732x_chip *chip, int group_a, uint8_t *val)
 {
 	struct i2c_client *client;
 	int ret;
@@ -142,7 +186,7 @@
 
 	chip = container_of(gc, struct max732x_chip, gpio_chip);
 
-	ret = max732x_read(chip, is_group_a(chip, off), &reg_val);
+	ret = max732x_readb(chip, is_group_a(chip, off), &reg_val);
 	if (ret < 0)
 		return 0;
 
@@ -162,7 +206,7 @@
 	reg_out = (off > 7) ? chip->reg_out[1] : chip->reg_out[0];
 	reg_out = (val) ? reg_out | mask : reg_out & ~mask;
 
-	ret = max732x_write(chip, is_group_a(chip, off), reg_out);
+	ret = max732x_writeb(chip, is_group_a(chip, off), reg_out);
 	if (ret < 0)
 		goto out;
 
@@ -188,6 +232,13 @@
 		return -EACCES;
 	}
 
+	/*
+	 * Open-drain pins must be set to high impedance (which is
+	 * equivalent to output-high) to be turned into an input.
+	 */
+	if ((mask & chip->dir_output))
+		max732x_gpio_set_value(gc, off, 1);
+
 	return 0;
 }
 
@@ -209,12 +260,278 @@
 	return 0;
 }
 
+#ifdef CONFIG_GPIO_MAX732X_IRQ
+static int max732x_writew(struct max732x_chip *chip, uint16_t val)
+{
+	int ret;
+
+	val = cpu_to_le16(val);
+
+	ret = i2c_master_send(chip->client_group_a, (char *)&val, 2);
+	if (ret < 0) {
+		dev_err(&chip->client_group_a->dev, "failed writing\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int max732x_readw(struct max732x_chip *chip, uint16_t *val)
+{
+	int ret;
+
+	ret = i2c_master_recv(chip->client_group_a, (char *)val, 2);
+	if (ret < 0) {
+		dev_err(&chip->client_group_a->dev, "failed reading\n");
+		return ret;
+	}
+
+	*val = le16_to_cpu(*val);
+	return 0;
+}
+
+static void max732x_irq_update_mask(struct max732x_chip *chip)
+{
+	uint16_t msg;
+
+	if (chip->irq_mask == chip->irq_mask_cur)
+		return;
+
+	chip->irq_mask = chip->irq_mask_cur;
+
+	if (chip->irq_features == INT_NO_MASK)
+		return;
+
+	mutex_lock(&chip->lock);
+
+	switch (chip->irq_features) {
+	case INT_INDEP_MASK:
+		msg = (chip->irq_mask << 8) | chip->reg_out[0];
+		max732x_writew(chip, msg);
+		break;
+
+	case INT_MERGED_MASK:
+		msg = chip->irq_mask | chip->reg_out[0];
+		max732x_writeb(chip, 1, (uint8_t)msg);
+		break;
+	}
+
+	mutex_unlock(&chip->lock);
+}
+
+static int max732x_gpio_to_irq(struct gpio_chip *gc, unsigned off)
+{
+	struct max732x_chip *chip;
+
+	chip = container_of(gc, struct max732x_chip, gpio_chip);
+	return chip->irq_base + off;
+}
+
+static void max732x_irq_mask(unsigned int irq)
+{
+	struct max732x_chip *chip = get_irq_chip_data(irq);
+
+	chip->irq_mask_cur &= ~(1 << (irq - chip->irq_base));
+}
+
+static void max732x_irq_unmask(unsigned int irq)
+{
+	struct max732x_chip *chip = get_irq_chip_data(irq);
+
+	chip->irq_mask_cur |= 1 << (irq - chip->irq_base);
+}
+
+static void max732x_irq_bus_lock(unsigned int irq)
+{
+	struct max732x_chip *chip = get_irq_chip_data(irq);
+
+	mutex_lock(&chip->irq_lock);
+	chip->irq_mask_cur = chip->irq_mask;
+}
+
+static void max732x_irq_bus_sync_unlock(unsigned int irq)
+{
+	struct max732x_chip *chip = get_irq_chip_data(irq);
+
+	max732x_irq_update_mask(chip);
+	mutex_unlock(&chip->irq_lock);
+}
+
+static int max732x_irq_set_type(unsigned int irq, unsigned int type)
+{
+	struct max732x_chip *chip = get_irq_chip_data(irq);
+	uint16_t off = irq - chip->irq_base;
+	uint16_t mask = 1 << off;
+
+	if (!(mask & chip->dir_input)) {
+		dev_dbg(&chip->client->dev, "%s port %d is output only\n",
+			chip->client->name, off);
+		return -EACCES;
+	}
+
+	if (!(type & IRQ_TYPE_EDGE_BOTH)) {
+		dev_err(&chip->client->dev, "irq %d: unsupported type %d\n",
+			irq, type);
+		return -EINVAL;
+	}
+
+	if (type & IRQ_TYPE_EDGE_FALLING)
+		chip->irq_trig_fall |= mask;
+	else
+		chip->irq_trig_fall &= ~mask;
+
+	if (type & IRQ_TYPE_EDGE_RISING)
+		chip->irq_trig_raise |= mask;
+	else
+		chip->irq_trig_raise &= ~mask;
+
+	return max732x_gpio_direction_input(&chip->gpio_chip, off);
+}
+
+static struct irq_chip max732x_irq_chip = {
+	.name			= "max732x",
+	.mask			= max732x_irq_mask,
+	.unmask			= max732x_irq_unmask,
+	.bus_lock		= max732x_irq_bus_lock,
+	.bus_sync_unlock	= max732x_irq_bus_sync_unlock,
+	.set_type		= max732x_irq_set_type,
+};
+
+static uint8_t max732x_irq_pending(struct max732x_chip *chip)
+{
+	uint8_t cur_stat;
+	uint8_t old_stat;
+	uint8_t trigger;
+	uint8_t pending;
+	uint16_t status;
+	int ret;
+
+	ret = max732x_readw(chip, &status);
+	if (ret)
+		return 0;
+
+	trigger = status >> 8;
+	trigger &= chip->irq_mask;
+
+	if (!trigger)
+		return 0;
+
+	cur_stat = status & 0xFF;
+	cur_stat &= chip->irq_mask;
+
+	old_stat = cur_stat ^ trigger;
+
+	pending = (old_stat & chip->irq_trig_fall) |
+		  (cur_stat & chip->irq_trig_raise);
+	pending &= trigger;
+
+	return pending;
+}
+
+static irqreturn_t max732x_irq_handler(int irq, void *devid)
+{
+	struct max732x_chip *chip = devid;
+	uint8_t pending;
+	uint8_t level;
+
+	pending = max732x_irq_pending(chip);
+
+	if (!pending)
+		return IRQ_HANDLED;
+
+	do {
+		level = __ffs(pending);
+		handle_nested_irq(level + chip->irq_base);
+
+		pending &= ~(1 << level);
+	} while (pending);
+
+	return IRQ_HANDLED;
+}
+
+static int max732x_irq_setup(struct max732x_chip *chip,
+			     const struct i2c_device_id *id)
+{
+	struct i2c_client *client = chip->client;
+	struct max732x_platform_data *pdata = client->dev.platform_data;
+	int has_irq = max732x_features[id->driver_data] >> 32;
+	int ret;
+
+	if (pdata->irq_base && has_irq != INT_NONE) {
+		int lvl;
+
+		chip->irq_base = pdata->irq_base;
+		chip->irq_features = has_irq;
+		mutex_init(&chip->irq_lock);
+
+		for (lvl = 0; lvl < chip->gpio_chip.ngpio; lvl++) {
+			int irq = lvl + chip->irq_base;
+
+			if (!(chip->dir_input & (1 << lvl)))
+				continue;
+
+			set_irq_chip_data(irq, chip);
+			set_irq_chip_and_handler(irq, &max732x_irq_chip,
+						 handle_edge_irq);
+			set_irq_nested_thread(irq, 1);
+#ifdef CONFIG_ARM
+			set_irq_flags(irq, IRQF_VALID);
+#else
+			set_irq_noprobe(irq);
+#endif
+		}
+
+		ret = request_threaded_irq(client->irq,
+					   NULL,
+					   max732x_irq_handler,
+					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					   dev_name(&client->dev), chip);
+		if (ret) {
+			dev_err(&client->dev, "failed to request irq %d\n",
+				client->irq);
+			goto out_failed;
+		}
+
+		chip->gpio_chip.to_irq = max732x_gpio_to_irq;
+	}
+
+	return 0;
+
+out_failed:
+	chip->irq_base = 0;
+	return ret;
+}
+
+static void max732x_irq_teardown(struct max732x_chip *chip)
+{
+	if (chip->irq_base)
+		free_irq(chip->client->irq, chip);
+}
+#else /* CONFIG_GPIO_MAX732X_IRQ */
+static int max732x_irq_setup(struct max732x_chip *chip,
+			     const struct i2c_device_id *id)
+{
+	struct i2c_client *client = chip->client;
+	struct max732x_platform_data *pdata = client->dev.platform_data;
+	int has_irq = max732x_features[id->driver_data] >> 32;
+
+	if (pdata->irq_base && has_irq != INT_NONE)
+		dev_warn(&client->dev, "interrupt support not compiled in\n");
+
+	return 0;
+}
+
+static void max732x_irq_teardown(struct max732x_chip *chip)
+{
+}
+#endif
+
 static int __devinit max732x_setup_gpio(struct max732x_chip *chip,
 					const struct i2c_device_id *id,
 					unsigned gpio_start)
 {
 	struct gpio_chip *gc = &chip->gpio_chip;
-	uint32_t id_data = id->driver_data;
+	uint32_t id_data = (uint32_t)max732x_features[id->driver_data];
 	int i, port = 0;
 
 	for (i = 0; i < 16; i++, id_data >>= 2) {
@@ -285,14 +602,14 @@
 	switch (client->addr & 0x70) {
 	case 0x60:
 		chip->client_group_a = client;
-		if (nr_port > 7) {
+		if (nr_port > 8) {
 			c = i2c_new_dummy(client->adapter, addr_b);
 			chip->client_group_b = chip->client_dummy = c;
 		}
 		break;
 	case 0x50:
 		chip->client_group_b = client;
-		if (nr_port > 7) {
+		if (nr_port > 8) {
 			c = i2c_new_dummy(client->adapter, addr_a);
 			chip->client_group_a = chip->client_dummy = c;
 		}
@@ -306,9 +623,13 @@
 
 	mutex_init(&chip->lock);
 
-	max732x_read(chip, is_group_a(chip, 0), &chip->reg_out[0]);
-	if (nr_port > 7)
-		max732x_read(chip, is_group_a(chip, 8), &chip->reg_out[1]);
+	max732x_readb(chip, is_group_a(chip, 0), &chip->reg_out[0]);
+	if (nr_port > 8)
+		max732x_readb(chip, is_group_a(chip, 8), &chip->reg_out[1]);
+
+	ret = max732x_irq_setup(chip, id);
+	if (ret)
+		goto out_failed;
 
 	ret = gpiochip_add(&chip->gpio_chip);
 	if (ret)
@@ -325,6 +646,7 @@
 	return 0;
 
 out_failed:
+	max732x_irq_teardown(chip);
 	kfree(chip);
 	return ret;
 }
@@ -352,6 +674,8 @@
 		return ret;
 	}
 
+	max732x_irq_teardown(chip);
+
 	/* unregister any dummy i2c_client */
 	if (chip->client_dummy)
 		i2c_unregister_device(chip->client_dummy);
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index f156ab3..a2b12aa 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -73,7 +73,7 @@
 	struct i2c_client *client;
 	struct pca953x_platform_data *dyn_pdata;
 	struct gpio_chip gpio_chip;
-	char **names;
+	const char *const *names;
 };
 
 static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val)
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index 105701a..ee568c8 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -164,7 +164,7 @@
 	unsigned long flags;
 	u8 gpiois, gpioibe, gpioiev;
 
-	if (offset < 0 || offset > PL061_GPIO_NR)
+	if (offset < 0 || offset >= PL061_GPIO_NR)
 		return -EINVAL;
 
 	spin_lock_irqsave(&chip->irq_lock, flags);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index f569ae8..c198186 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -147,7 +147,10 @@
 		csum += raw_edid[i];
 	if (csum) {
 		DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
-		goto bad;
+
+		/* allow CEA to slide through, switches mangle this */
+		if (raw_edid[0] != 0x02)
+			goto bad;
 	}
 
 	/* per-block-type checks */
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 7e663a7..266b0ff 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -241,7 +241,8 @@
 	if (nv_encoder && nv_connector->native_mode) {
 		unsigned status = connector_status_connected;
 
-#ifdef CONFIG_ACPI
+#if defined(CONFIG_ACPI_BUTTON) || \
+	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
 		if (!nouveau_ignorelid && !acpi_lid_open())
 			status = connector_status_unknown;
 #endif
diff --git a/drivers/gpu/drm/nouveau/nv40_graph.c b/drivers/gpu/drm/nouveau/nv40_graph.c
index 0616c96..704a25d 100644
--- a/drivers/gpu/drm/nouveau/nv40_graph.c
+++ b/drivers/gpu/drm/nouveau/nv40_graph.c
@@ -253,7 +253,11 @@
 
 	if (!dev_priv->engine.graph.ctxprog) {
 		struct nouveau_grctx ctx = {};
-		uint32_t cp[256];
+		uint32_t *cp;
+
+		cp = kmalloc(sizeof(*cp) * 256, GFP_KERNEL);
+		if (!cp)
+			return -ENOMEM;
 
 		ctx.dev = dev;
 		ctx.mode = NOUVEAU_GRCTX_PROG;
@@ -265,6 +269,8 @@
 		nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
 		for (i = 0; i < ctx.ctxprog_len; i++)
 			nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA, cp[i]);
+
+		kfree(cp);
 	}
 
 	/* No context present currently */
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 03dd6c4..f3f2827 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -707,6 +707,7 @@
 		break;
 	case ATOM_DCPLL:
 	case ATOM_PPLL_INVALID:
+	default:
 		pll = &rdev->clock.dcpll;
 		break;
 	}
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 66a37fb..669feb6 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -576,6 +576,7 @@
  */
 int radeon_agp_init(struct radeon_device *rdev);
 void radeon_agp_resume(struct radeon_device *rdev);
+void radeon_agp_suspend(struct radeon_device *rdev);
 void radeon_agp_fini(struct radeon_device *rdev);
 
 
diff --git a/drivers/gpu/drm/radeon/radeon_agp.c b/drivers/gpu/drm/radeon/radeon_agp.c
index 28e473f..f40dfb7 100644
--- a/drivers/gpu/drm/radeon/radeon_agp.c
+++ b/drivers/gpu/drm/radeon/radeon_agp.c
@@ -270,3 +270,8 @@
 	}
 #endif
 }
+
+void radeon_agp_suspend(struct radeon_device *rdev)
+{
+	radeon_agp_fini(rdev);
+}
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 6e733fd..24ea683 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -680,11 +680,19 @@
 	uint8_t dac;
 	union atom_supported_devices *supported_devices;
 	int i, j, max_device;
-	struct bios_connector bios_connectors[ATOM_MAX_SUPPORTED_DEVICE];
+	struct bios_connector *bios_connectors;
+	size_t bc_size = sizeof(*bios_connectors) * ATOM_MAX_SUPPORTED_DEVICE;
 
-	if (!atom_parse_data_header(ctx, index, &size, &frev, &crev, &data_offset))
+	bios_connectors = kzalloc(bc_size, GFP_KERNEL);
+	if (!bios_connectors)
 		return false;
 
+	if (!atom_parse_data_header(ctx, index, &size, &frev, &crev,
+				    &data_offset)) {
+		kfree(bios_connectors);
+		return false;
+	}
+
 	supported_devices =
 	    (union atom_supported_devices *)(ctx->bios + data_offset);
 
@@ -851,6 +859,7 @@
 
 	radeon_link_encoder_connector(dev);
 
+	kfree(bios_connectors);
 	return true;
 }
 
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index a20b612..fdc3fdf7 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -754,6 +754,8 @@
 	/* evict remaining vram memory */
 	radeon_bo_evict_vram(rdev);
 
+	radeon_agp_suspend(rdev);
+
 	pci_save_state(dev->pdev);
 	if (state.event == PM_EVENT_SUSPEND) {
 		/* Shut down the device */
diff --git a/drivers/gpu/drm/radeon/radeon_state.c b/drivers/gpu/drm/radeon/radeon_state.c
index cc5316d..b3ba44c0 100644
--- a/drivers/gpu/drm/radeon/radeon_state.c
+++ b/drivers/gpu/drm/radeon/radeon_state.c
@@ -900,9 +900,10 @@
 			flags |= RADEON_FRONT;
 	}
 	if (flags & (RADEON_DEPTH|RADEON_STENCIL)) {
-		if (!dev_priv->have_z_offset)
+		if (!dev_priv->have_z_offset) {
 			printk_once(KERN_ERR "radeon: illegal depth clear request. Buggy mesa detected - please update.\n");
-		flags &= ~(RADEON_DEPTH | RADEON_STENCIL);
+			flags &= ~(RADEON_DEPTH | RADEON_STENCIL);
+		}
 	}
 
 	if (flags & (RADEON_FRONT | RADEON_BACK)) {
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 76ba59b..132278f 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -347,6 +347,14 @@
 	---help---
 	Support for Quanta Optical Touch dual-touch panels.
 
+config HID_ROCCAT
+	tristate "Roccat special event support"
+	depends on USB_HID
+	---help---
+	Support for Roccat special events.
+	Say Y here if you have a Roccat mouse or keyboard and want OSD or
+	macro execution support.
+
 config HID_ROCCAT_KONE
 	tristate "Roccat Kone Mouse support"
 	depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 22e47eae..987fa06 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -48,6 +48,7 @@
 obj-$(CONFIG_HID_PANTHERLORD)	+= hid-pl.o
 obj-$(CONFIG_HID_PETALYNX)	+= hid-petalynx.o
 obj-$(CONFIG_HID_PICOLCD)	+= hid-picolcd.o
+obj-$(CONFIG_HID_ROCCAT)	+= hid-roccat.o
 obj-$(CONFIG_HID_ROCCAT_KONE)	+= hid-roccat-kone.o
 obj-$(CONFIG_HID_SAMSUNG)	+= hid-samsung.o
 obj-$(CONFIG_HID_SMARTJOYPLUS)	+= hid-sjoy.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index e10e314..aa0f7dc 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1301,6 +1301,7 @@
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 56f314f..c940267 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -811,7 +811,7 @@
 	[REL_WHEEL] = "Wheel",		[REL_MISC] = "Misc",
 };
 
-static const char *absolutes[ABS_MAX + 1] = {
+static const char *absolutes[ABS_CNT] = {
 	[ABS_X] = "X",			[ABS_Y] = "Y",
 	[ABS_Z] = "Z",			[ABS_RX] = "Rx",
 	[ABS_RY] = "Ry",		[ABS_RZ] = "Rz",
diff --git a/drivers/hid/hid-gyration.c b/drivers/hid/hid-gyration.c
index 62416e6..3975e03 100644
--- a/drivers/hid/hid-gyration.c
+++ b/drivers/hid/hid-gyration.c
@@ -73,6 +73,7 @@
 static const struct hid_device_id gyration_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, gyration_devices);
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 9776896..6af77ed 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -282,6 +282,7 @@
 #define USB_VENDOR_ID_GYRATION		0x0c16
 #define USB_DEVICE_ID_GYRATION_REMOTE	0x0002
 #define USB_DEVICE_ID_GYRATION_REMOTE_2 0x0003
+#define USB_DEVICE_ID_GYRATION_REMOTE_3 0x0008
 
 #define USB_VENDOR_ID_HAPP		0x078b
 #define USB_DEVICE_ID_UGCI_DRIVING	0x0010
diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index 66e6940..17f2dc0 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -37,6 +37,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include "hid-ids.h"
+#include "hid-roccat.h"
 #include "hid-roccat-kone.h"
 
 static void kone_set_settings_checksum(struct kone_settings *settings)
@@ -263,7 +264,7 @@
 	return 0;
 }
 
-static ssize_t kone_sysfs_read_settings(struct kobject *kobj,
+static ssize_t kone_sysfs_read_settings(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -287,7 +288,7 @@
  * This function keeps values in kone_device up to date and assumes that in
  * case of error the old data is still valid
  */
-static ssize_t kone_sysfs_write_settings(struct kobject *kobj,
+static ssize_t kone_sysfs_write_settings(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	struct device *dev = container_of(kobj, struct device, kobj);
@@ -342,31 +343,31 @@
 	return count;
 }
 
-static ssize_t kone_sysfs_read_profile1(struct kobject *kobj,
+static ssize_t kone_sysfs_read_profile1(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_read_profilex(kobj, attr, buf, off, count, 1);
 }
 
-static ssize_t kone_sysfs_read_profile2(struct kobject *kobj,
+static ssize_t kone_sysfs_read_profile2(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_read_profilex(kobj, attr, buf, off, count, 2);
 }
 
-static ssize_t kone_sysfs_read_profile3(struct kobject *kobj,
+static ssize_t kone_sysfs_read_profile3(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_read_profilex(kobj, attr, buf, off, count, 3);
 }
 
-static ssize_t kone_sysfs_read_profile4(struct kobject *kobj,
+static ssize_t kone_sysfs_read_profile4(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_read_profilex(kobj, attr, buf, off, count, 4);
 }
 
-static ssize_t kone_sysfs_read_profile5(struct kobject *kobj,
+static ssize_t kone_sysfs_read_profile5(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_read_profilex(kobj, attr, buf, off, count, 5);
@@ -404,31 +405,31 @@
 	return sizeof(struct kone_profile);
 }
 
-static ssize_t kone_sysfs_write_profile1(struct kobject *kobj,
+static ssize_t kone_sysfs_write_profile1(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_write_profilex(kobj, attr, buf, off, count, 1);
 }
 
-static ssize_t kone_sysfs_write_profile2(struct kobject *kobj,
+static ssize_t kone_sysfs_write_profile2(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_write_profilex(kobj, attr, buf, off, count, 2);
 }
 
-static ssize_t kone_sysfs_write_profile3(struct kobject *kobj,
+static ssize_t kone_sysfs_write_profile3(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_write_profilex(kobj, attr, buf, off, count, 3);
 }
 
-static ssize_t kone_sysfs_write_profile4(struct kobject *kobj,
+static ssize_t kone_sysfs_write_profile4(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_write_profilex(kobj, attr, buf, off, count, 4);
 }
 
-static ssize_t kone_sysfs_write_profile5(struct kobject *kobj,
+static ssize_t kone_sysfs_write_profile5(struct file *fp, struct kobject *kobj,
 		struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count) {
 	return kone_sysfs_write_profilex(kobj, attr, buf, off, count, 5);
@@ -849,6 +850,16 @@
 					"couldn't init struct kone_device\n");
 			goto exit_free;
 		}
+
+		retval = roccat_connect(hdev);
+		if (retval < 0) {
+			dev_err(&hdev->dev, "couldn't init char dev\n");
+			/* be tolerant about not getting chrdev */
+		} else {
+			kone->roccat_claimed = 1;
+			kone->chrdev_minor = retval;
+		}
+
 		retval = kone_create_sysfs_attributes(intf);
 		if (retval) {
 			dev_err(&hdev->dev, "cannot create sysfs files\n");
@@ -868,10 +879,14 @@
 static void kone_remove_specials(struct hid_device *hdev)
 {
 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+	struct kone_device *kone;
 
 	if (intf->cur_altsetting->desc.bInterfaceProtocol
 			== USB_INTERFACE_PROTOCOL_MOUSE) {
 		kone_remove_sysfs_attributes(intf);
+		kone = hid_get_drvdata(hdev);
+		if (kone->roccat_claimed)
+			roccat_disconnect(kone->chrdev_minor);
 		kfree(hid_get_drvdata(hdev));
 	}
 }
@@ -930,6 +945,37 @@
 	}
 }
 
+static void kone_report_to_chrdev(struct kone_device const *kone,
+		struct kone_mouse_event const *event)
+{
+	struct kone_roccat_report roccat_report;
+
+	switch (event->event) {
+	case kone_mouse_event_switch_profile:
+	case kone_mouse_event_switch_dpi:
+	case kone_mouse_event_osd_profile:
+	case kone_mouse_event_osd_dpi:
+		roccat_report.event = event->event;
+		roccat_report.value = event->value;
+		roccat_report.key = 0;
+		roccat_report_event(kone->chrdev_minor,
+				(uint8_t *)&roccat_report,
+				sizeof(struct kone_roccat_report));
+		break;
+	case kone_mouse_event_call_overlong_macro:
+		if (event->value == kone_keystroke_action_press) {
+			roccat_report.event = kone_mouse_event_call_overlong_macro;
+			roccat_report.value = kone->actual_profile;
+			roccat_report.key = event->macro_key;
+			roccat_report_event(kone->chrdev_minor,
+					(uint8_t *)&roccat_report,
+					sizeof(struct kone_roccat_report));
+		}
+		break;
+	}
+
+}
+
 /*
  * Is called for keyboard- and mousepart.
  * Only mousepart gets informations about special events in its extended event
@@ -958,6 +1004,9 @@
 
 	kone_keep_values_up_to_date(kone, event);
 
+	if (kone->roccat_claimed)
+		kone_report_to_chrdev(kone, event);
+
 	return 0; /* always do further processing */
 }
 
diff --git a/drivers/hid/hid-roccat-kone.h b/drivers/hid/hid-roccat-kone.h
index b413b10..003e6f8 100644
--- a/drivers/hid/hid-roccat-kone.h
+++ b/drivers/hid/hid-roccat-kone.h
@@ -189,6 +189,12 @@
 	kone_command_firmware = 0xe5a
 };
 
+struct kone_roccat_report {
+	uint8_t event;
+	uint8_t value; /* holds dpi or profile value */
+	uint8_t key; /* macro key on overlong macro execution */
+};
+
 #pragma pack(pop)
 
 struct kone_device {
@@ -219,6 +225,9 @@
 	 * so it's read only once
 	 */
 	int firmware_version;
+
+	int roccat_claimed;
+	int chrdev_minor;
 };
 
 #endif
diff --git a/drivers/hid/hid-roccat.c b/drivers/hid/hid-roccat.c
new file mode 100644
index 0000000..e05d48e
--- /dev/null
+++ b/drivers/hid/hid-roccat.c
@@ -0,0 +1,428 @@
+/*
+ * Roccat driver for Linux
+ *
+ * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+/*
+ * Module roccat is a char device used to report special events of roccat
+ * hardware to userland. These events include requests for on-screen-display of
+ * profile or dpi settings or requests for execution of macro sequences that are
+ * not stored in device. The information in these events depends on hid device
+ * implementation and contains data that is not available in a single hid event
+ * or else hidraw could have been used.
+ * It is inspired by hidraw, but uses only one circular buffer for all readers.
+ */
+
+#include <linux/cdev.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+
+#include "hid-roccat.h"
+
+#define ROCCAT_FIRST_MINOR 0
+#define ROCCAT_MAX_DEVICES 8
+
+/* should be a power of 2 for performance reason */
+#define ROCCAT_CBUF_SIZE 16
+
+struct roccat_report {
+	uint8_t *value;
+	int len;
+};
+
+struct roccat_device {
+	unsigned int minor;
+	int open;
+	int exist;
+	wait_queue_head_t wait;
+	struct device *dev;
+	struct hid_device *hid;
+	struct list_head readers;
+	/* protects modifications of readers list */
+	struct mutex readers_lock;
+
+	/*
+	 * circular_buffer has one writer and multiple readers with their own
+	 * read pointers
+	 */
+	struct roccat_report cbuf[ROCCAT_CBUF_SIZE];
+	int cbuf_end;
+	struct mutex cbuf_lock;
+};
+
+struct roccat_reader {
+	struct list_head node;
+	struct roccat_device *device;
+	int cbuf_start;
+};
+
+static int roccat_major;
+static struct class *roccat_class;
+static struct cdev roccat_cdev;
+
+static struct roccat_device *devices[ROCCAT_MAX_DEVICES];
+/* protects modifications of devices array */
+static DEFINE_MUTEX(devices_lock);
+
+static ssize_t roccat_read(struct file *file, char __user *buffer,
+		size_t count, loff_t *ppos)
+{
+	struct roccat_reader *reader = file->private_data;
+	struct roccat_device *device = reader->device;
+	struct roccat_report *report;
+	ssize_t retval = 0, len;
+	DECLARE_WAITQUEUE(wait, current);
+
+	mutex_lock(&device->cbuf_lock);
+
+	/* no data? */
+	if (reader->cbuf_start == device->cbuf_end) {
+		add_wait_queue(&device->wait, &wait);
+		set_current_state(TASK_INTERRUPTIBLE);
+
+		/* wait for data */
+		while (reader->cbuf_start == device->cbuf_end) {
+			if (file->f_flags & O_NONBLOCK) {
+				retval = -EAGAIN;
+				break;
+			}
+			if (signal_pending(current)) {
+				retval = -ERESTARTSYS;
+				break;
+			}
+			if (!device->exist) {
+				retval = -EIO;
+				break;
+			}
+
+			mutex_unlock(&device->cbuf_lock);
+			schedule();
+			mutex_lock(&device->cbuf_lock);
+			set_current_state(TASK_INTERRUPTIBLE);
+		}
+
+		set_current_state(TASK_RUNNING);
+		remove_wait_queue(&device->wait, &wait);
+	}
+
+	/* here we either have data or a reason to return if retval is set */
+	if (retval)
+		goto exit_unlock;
+
+	report = &device->cbuf[reader->cbuf_start];
+	/*
+	 * If report is larger than requested amount of data, rest of report
+	 * is lost!
+	 */
+	len = report->len > count ? count : report->len;
+
+	if (copy_to_user(buffer, report->value, len)) {
+		retval = -EFAULT;
+		goto exit_unlock;
+	}
+	retval += len;
+	reader->cbuf_start = (reader->cbuf_start + 1) % ROCCAT_CBUF_SIZE;
+
+exit_unlock:
+	mutex_unlock(&device->cbuf_lock);
+	return retval;
+}
+
+static unsigned int roccat_poll(struct file *file, poll_table *wait)
+{
+	struct roccat_reader *reader = file->private_data;
+	poll_wait(file, &reader->device->wait, wait);
+	if (reader->cbuf_start != reader->device->cbuf_end)
+		return POLLIN | POLLRDNORM;
+	if (!reader->device->exist)
+		return POLLERR | POLLHUP;
+	return 0;
+}
+
+static int roccat_open(struct inode *inode, struct file *file)
+{
+	unsigned int minor = iminor(inode);
+	struct roccat_reader *reader;
+	struct roccat_device *device;
+	int error = 0;
+
+	reader = kzalloc(sizeof(struct roccat_reader), GFP_KERNEL);
+	if (!reader)
+		return -ENOMEM;
+
+	mutex_lock(&devices_lock);
+
+	device = devices[minor];
+
+	mutex_lock(&device->readers_lock);
+
+	if (!device) {
+		printk(KERN_EMERG "roccat device with minor %d doesn't exist\n",
+				minor);
+		error = -ENODEV;
+		goto exit_unlock;
+	}
+
+	if (!device->open++) {
+		/* power on device on adding first reader */
+		if (device->hid->ll_driver->power) {
+			error = device->hid->ll_driver->power(device->hid,
+					PM_HINT_FULLON);
+			if (error < 0) {
+				--device->open;
+				goto exit_unlock;
+			}
+		}
+		error = device->hid->ll_driver->open(device->hid);
+		if (error < 0) {
+			if (device->hid->ll_driver->power)
+				device->hid->ll_driver->power(device->hid,
+						PM_HINT_NORMAL);
+			--device->open;
+			goto exit_unlock;
+		}
+	}
+
+	reader->device = device;
+	/* new reader doesn't get old events */
+	reader->cbuf_start = device->cbuf_end;
+
+	list_add_tail(&reader->node, &device->readers);
+	file->private_data = reader;
+
+exit_unlock:
+	mutex_unlock(&device->readers_lock);
+	mutex_unlock(&devices_lock);
+	return error;
+}
+
+static int roccat_release(struct inode *inode, struct file *file)
+{
+	unsigned int minor = iminor(inode);
+	struct roccat_reader *reader = file->private_data;
+	struct roccat_device *device;
+
+	mutex_lock(&devices_lock);
+
+	device = devices[minor];
+	if (!device) {
+		mutex_unlock(&devices_lock);
+		printk(KERN_EMERG "roccat device with minor %d doesn't exist\n",
+				minor);
+		return -ENODEV;
+	}
+
+	mutex_lock(&device->readers_lock);
+	list_del(&reader->node);
+	mutex_unlock(&device->readers_lock);
+	kfree(reader);
+
+	if (!--device->open) {
+		/* removing last reader */
+		if (device->exist) {
+			if (device->hid->ll_driver->power)
+				device->hid->ll_driver->power(device->hid,
+						PM_HINT_NORMAL);
+			device->hid->ll_driver->close(device->hid);
+		} else {
+			kfree(device);
+		}
+	}
+
+	mutex_unlock(&devices_lock);
+
+	return 0;
+}
+
+/*
+ * roccat_report_event() - output data to readers
+ * @minor: minor device number returned by roccat_connect()
+ * @data: pointer to data
+ * @len: size of data
+ *
+ * Return value is zero on success, a negative error code on failure.
+ *
+ * This is called from interrupt handler.
+ */
+int roccat_report_event(int minor, u8 const *data, int len)
+{
+	struct roccat_device *device;
+	struct roccat_reader *reader;
+	struct roccat_report *report;
+	uint8_t *new_value;
+
+	new_value = kmemdup(data, len, GFP_ATOMIC);
+	if (!new_value)
+		return -ENOMEM;
+
+	device = devices[minor];
+
+	report = &device->cbuf[device->cbuf_end];
+
+	/* passing NULL is safe */
+	kfree(report->value);
+
+	report->value = new_value;
+	report->len = len;
+	device->cbuf_end = (device->cbuf_end + 1) % ROCCAT_CBUF_SIZE;
+
+	list_for_each_entry(reader, &device->readers, node) {
+		/*
+		 * As we already inserted one element, the buffer can't be
+		 * empty. If start and end are equal, buffer is full and we
+		 * increase start, so that slow reader misses one event, but
+		 * gets the newer ones in the right order.
+		 */
+		if (reader->cbuf_start == device->cbuf_end)
+			reader->cbuf_start = (reader->cbuf_start + 1) % ROCCAT_CBUF_SIZE;
+	}
+
+	wake_up_interruptible(&device->wait);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(roccat_report_event);
+
+/*
+ * roccat_connect() - create a char device for special event output
+ * @hid: the hid device the char device should be connected to.
+ *
+ * Return value is minor device number in Range [0, ROCCAT_MAX_DEVICES] on
+ * success, a negative error code on failure.
+ */
+int roccat_connect(struct hid_device *hid)
+{
+	unsigned int minor;
+	struct roccat_device *device;
+	int temp;
+
+	device = kzalloc(sizeof(struct roccat_device), GFP_KERNEL);
+	if (!device)
+		return -ENOMEM;
+
+	mutex_lock(&devices_lock);
+
+	for (minor = 0; minor < ROCCAT_MAX_DEVICES; ++minor) {
+		if (devices[minor])
+			continue;
+		break;
+	}
+
+	if (minor < ROCCAT_MAX_DEVICES) {
+		devices[minor] = device;
+	} else {
+		mutex_unlock(&devices_lock);
+		kfree(device);
+		return -EINVAL;
+	}
+
+	device->dev = device_create(roccat_class, &hid->dev,
+			MKDEV(roccat_major, minor), NULL,
+			"%s%s%d", "roccat", hid->driver->name, minor);
+
+	if (IS_ERR(device->dev)) {
+		devices[minor] = NULL;
+		mutex_unlock(&devices_lock);
+		temp = PTR_ERR(device->dev);
+		kfree(device);
+		return temp;
+	}
+
+	mutex_unlock(&devices_lock);
+
+	init_waitqueue_head(&device->wait);
+	INIT_LIST_HEAD(&device->readers);
+	mutex_init(&device->readers_lock);
+	mutex_init(&device->cbuf_lock);
+	device->minor = minor;
+	device->hid = hid;
+	device->exist = 1;
+	device->cbuf_end = 0;
+
+	return minor;
+}
+EXPORT_SYMBOL_GPL(roccat_connect);
+
+/* roccat_disconnect() - remove char device from hid device
+ * @minor: the minor device number returned by roccat_connect()
+ */
+void roccat_disconnect(int minor)
+{
+	struct roccat_device *device;
+
+	mutex_lock(&devices_lock);
+	device = devices[minor];
+	devices[minor] = NULL;
+	mutex_unlock(&devices_lock);
+
+	device->exist = 0; /* TODO exist maybe not needed */
+
+	device_destroy(roccat_class, MKDEV(roccat_major, minor));
+
+	if (device->open) {
+		device->hid->ll_driver->close(device->hid);
+		wake_up_interruptible(&device->wait);
+	} else {
+		kfree(device);
+	}
+}
+EXPORT_SYMBOL_GPL(roccat_disconnect);
+
+static const struct file_operations roccat_ops = {
+	.owner = THIS_MODULE,
+	.read = roccat_read,
+	.poll = roccat_poll,
+	.open = roccat_open,
+	.release = roccat_release,
+};
+
+static int __init roccat_init(void)
+{
+	int retval;
+	dev_t dev_id;
+
+	retval = alloc_chrdev_region(&dev_id, ROCCAT_FIRST_MINOR,
+			ROCCAT_MAX_DEVICES, "roccat");
+
+	roccat_major = MAJOR(dev_id);
+
+	if (retval < 0) {
+		printk(KERN_WARNING "roccat: can't get major number\n");
+		return retval;
+	}
+
+	roccat_class = class_create(THIS_MODULE, "roccat");
+	if (IS_ERR(roccat_class)) {
+		retval = PTR_ERR(roccat_class);
+		unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES);
+		return retval;
+	}
+
+	cdev_init(&roccat_cdev, &roccat_ops);
+	cdev_add(&roccat_cdev, dev_id, ROCCAT_MAX_DEVICES);
+
+	return 0;
+}
+
+static void __exit roccat_exit(void)
+{
+	dev_t dev_id = MKDEV(roccat_major, 0);
+
+	cdev_del(&roccat_cdev);
+	class_destroy(roccat_class);
+	unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES);
+}
+
+module_init(roccat_init);
+module_exit(roccat_exit);
+
+MODULE_AUTHOR("Stefan Achatz");
+MODULE_DESCRIPTION("USB Roccat char device");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/hid/hid-roccat.h b/drivers/hid/hid-roccat.h
new file mode 100644
index 0000000..d8aae0c
--- /dev/null
+++ b/drivers/hid/hid-roccat.h
@@ -0,0 +1,31 @@
+#ifndef __HID_ROCCAT_H
+#define __HID_ROCCAT_H
+
+/*
+ * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/hid.h>
+#include <linux/types.h>
+
+#if defined(CONFIG_HID_ROCCAT) || defined (CONFIG_HID_ROCCAT_MODULE)
+int roccat_connect(struct hid_device *hid);
+void roccat_disconnect(int minor);
+int roccat_report_event(int minor, u8 const *data, int len);
+#else
+static inline int roccat_connect(struct hid_device *hid) { return -1; }
+static inline void roccat_disconnect(int minor) {}
+static inline int roccat_report_event(int minor, u8 const *data, int len)
+{
+	return 0;
+}
+#endif
+
+#endif
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 6a9ac75..e19cf8e 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -447,13 +447,14 @@
 	  will be called it87.
 
 config SENSORS_LM63
-	tristate "National Semiconductor LM63"
+	tristate "National Semiconductor LM63 and LM64"
 	depends on I2C
 	help
-	  If you say yes here you get support for the National Semiconductor
-	  LM63 remote diode digital temperature sensor with integrated fan
-	  control.  Such chips are found on the Tyan S4882 (Thunder K8QS Pro)
-	  motherboard, among others.
+	  If you say yes here you get support for the National
+	  Semiconductor LM63 and LM64 remote diode digital temperature
+	  sensors with integrated fan control.  Such chips are found
+	  on the Tyan S4882 (Thunder K8QS Pro) motherboard, among
+	  others.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm63.
@@ -492,7 +493,8 @@
 		- NXP's LM75A
 		- ST Microelectronics STDS75
 		- TelCom (now Microchip) TCN75
-		- Texas Instruments TMP100, TMP101, TMP75, TMP175, TMP275
+		- Texas Instruments TMP100, TMP101, TMP105, TMP75, TMP175,
+		  TMP275
 
 	  This driver supports driver model based binding through board
 	  specific I2C device tables.
@@ -749,6 +751,16 @@
 	  This driver can also be built as a module.  If so, the module
 	  will be called dme1737.
 
+config SENSORS_EMC1403
+	tristate "SMSC EMC1403 thermal sensor"
+	depends on I2C
+	help
+	  If you say yes here you get support for the SMSC EMC1403
+	  temperature monitoring chip.
+
+	  Threshold values can be configured using sysfs.
+	  Data from the different diodes are accessible via sysfs.
+
 config SENSORS_SMSC47M1
 	tristate "SMSC LPC47M10x and compatibles"
 	help
@@ -831,6 +843,16 @@
 	  This driver can also be built as a module.  If so, the module
 	  will be called thmc50.
 
+config SENSORS_TMP102
+	tristate "Texas Instruments TMP102"
+	depends on I2C && EXPERIMENTAL
+	help
+	  If you say yes here you get support for Texas Instruments TMP102
+	  sensor chips.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called tmp102.
+
 config SENSORS_TMP401
 	tristate "Texas Instruments TMP401 and compatibles"
 	depends on I2C && EXPERIMENTAL
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 86920fb..2138ceb 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -41,6 +41,7 @@
 obj-$(CONFIG_SENSORS_CORETEMP)	+= coretemp.o
 obj-$(CONFIG_SENSORS_DME1737)	+= dme1737.o
 obj-$(CONFIG_SENSORS_DS1621)	+= ds1621.o
+obj-$(CONFIG_SENSORS_EMC1403)	+= emc1403.o
 obj-$(CONFIG_SENSORS_F71805F)	+= f71805f.o
 obj-$(CONFIG_SENSORS_F71882FG)	+= f71882fg.o
 obj-$(CONFIG_SENSORS_F75375S)	+= f75375s.o
@@ -90,6 +91,7 @@
 obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
 obj-$(CONFIG_SENSORS_AMC6821)	+= amc6821.o
 obj-$(CONFIG_SENSORS_THMC50)	+= thmc50.o
+obj-$(CONFIG_SENSORS_TMP102)	+= tmp102.o
 obj-$(CONFIG_SENSORS_TMP401)	+= tmp401.o
 obj-$(CONFIG_SENSORS_TMP421)	+= tmp421.o
 obj-$(CONFIG_SENSORS_VIA_CPUTEMP)+= via-cputemp.o
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
index 1644b92..15c1a96 100644
--- a/drivers/hwmon/adm1031.c
+++ b/drivers/hwmon/adm1031.c
@@ -36,6 +36,7 @@
 #define ADM1031_REG_FAN_DIV(nr)		(0x20 + (nr))
 #define ADM1031_REG_PWM			(0x22)
 #define ADM1031_REG_FAN_MIN(nr)		(0x10 + (nr))
+#define ADM1031_REG_FAN_FILTER		(0x23)
 
 #define ADM1031_REG_TEMP_OFFSET(nr)	(0x0d + (nr))
 #define ADM1031_REG_TEMP_MAX(nr)	(0x14 + 4 * (nr))
@@ -61,6 +62,9 @@
 #define ADM1031_CONF2_TACH2_ENABLE	0x08
 #define ADM1031_CONF2_TEMP_ENABLE(chan)	(0x10 << (chan))
 
+#define ADM1031_UPDATE_RATE_MASK	0x1c
+#define ADM1031_UPDATE_RATE_SHIFT	2
+
 /* Addresses to scan */
 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 
@@ -75,6 +79,7 @@
 	int chip_type;
 	char valid;		/* !=0 if following fields are valid */
 	unsigned long last_updated;	/* In jiffies */
+	unsigned int update_rate;	/* In milliseconds */
 	/* The chan_select_table contains the possible configurations for
 	 * auto fan control.
 	 */
@@ -738,6 +743,57 @@
 static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 13);
 static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 14);
 
+/* Update Rate */
+static const unsigned int update_rates[] = {
+	16000, 8000, 4000, 2000, 1000, 500, 250, 125,
+};
+
+static ssize_t show_update_rate(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adm1031_data *data = i2c_get_clientdata(client);
+
+	return sprintf(buf, "%u\n", data->update_rate);
+}
+
+static ssize_t set_update_rate(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adm1031_data *data = i2c_get_clientdata(client);
+	unsigned long val;
+	int i, err;
+	u8 reg;
+
+	err = strict_strtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	/* find the nearest update rate from the table */
+	for (i = 0; i < ARRAY_SIZE(update_rates) - 1; i++) {
+		if (val >= update_rates[i])
+			break;
+	}
+	/* if not found, we point to the last entry (lowest update rate) */
+
+	/* set the new update rate while preserving other settings */
+	reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
+	reg &= ~ADM1031_UPDATE_RATE_MASK;
+	reg |= i << ADM1031_UPDATE_RATE_SHIFT;
+	adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg);
+
+	mutex_lock(&data->update_lock);
+	data->update_rate = update_rates[i];
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static DEVICE_ATTR(update_rate, S_IRUGO | S_IWUSR, show_update_rate,
+		   set_update_rate);
+
 static struct attribute *adm1031_attributes[] = {
 	&sensor_dev_attr_fan1_input.dev_attr.attr,
 	&sensor_dev_attr_fan1_div.dev_attr.attr,
@@ -774,6 +830,7 @@
 
 	&sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr,
 
+	&dev_attr_update_rate.attr,
 	&dev_attr_alarms.attr,
 
 	NULL
@@ -900,6 +957,7 @@
 {
 	unsigned int read_val;
 	unsigned int mask;
+	int i;
 	struct adm1031_data *data = i2c_get_clientdata(client);
 
 	mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE);
@@ -919,18 +977,24 @@
 				ADM1031_CONF1_MONITOR_ENABLE);
 	}
 
+	/* Read the chip's update rate */
+	mask = ADM1031_UPDATE_RATE_MASK;
+	read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
+	i = (read_val & mask) >> ADM1031_UPDATE_RATE_SHIFT;
+	data->update_rate = update_rates[i];
 }
 
 static struct adm1031_data *adm1031_update_device(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm1031_data *data = i2c_get_clientdata(client);
+	unsigned long next_update;
 	int chan;
 
 	mutex_lock(&data->update_lock);
 
-	if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
-	    || !data->valid) {
+	next_update = data->last_updated + msecs_to_jiffies(data->update_rate);
+	if (time_after(jiffies, next_update) || !data->valid) {
 
 		dev_dbg(&client->dev, "Starting adm1031 update\n");
 		for (chan = 0;
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index f085c18..b6598aa 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -148,6 +148,20 @@
 /* Set 18: MacBook Pro 2,2 */
 	{ "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "TM0P", "TTF0",
 	  "Th0H", "Th1H", "Tm0P", "Ts0P", NULL },
+/* Set 19: Macbook Pro 5,3 */
+	{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", "TC0F", "TC0P", "TG0D",
+	  "TG0F", "TG0H", "TG0P", "TG0T", "TN0D", "TN0P", "TTF0", "Th2H",
+	  "Tm0P", "Ts0P", "Ts0S", NULL },
+/* Set 20: MacBook Pro 5,4 */
+	{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", "TC0F", "TC0P", "TN0D",
+	  "TN0P", "TTF0", "Th2H", "Ts0P", "Ts0S", NULL },
+/* Set 21: MacBook Pro 6,2 */
+	{ "TB0T", "TB1T", "TB2T", "TC0C", "TC0D", "TC0P", "TC1C", "TG0D",
+	  "TG0P", "TG0T", "TMCD", "TP0P", "TPCD", "Th1H", "Th2H", "Tm0P",
+	  "Ts0P", "Ts0S", NULL },
+/* Set 22: MacBook Pro 7,1 */
+	{ "TB0T", "TB1T", "TB2T", "TC0D", "TC0P", "TN0D", "TN0P", "TN0S",
+	  "TN1D", "TN1F", "TN1G", "TN1S", "Th1H", "Ts0P", "Ts0S", NULL },
 };
 
 /* List of keys used to read/write fan speeds */
@@ -646,6 +660,17 @@
 		return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right);
 }
 
+/* Displays sensor key as label */
+static ssize_t applesmc_show_sensor_label(struct device *dev,
+			struct device_attribute *devattr, char *sysfsbuf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	const char *key =
+		temperature_sensors_sets[applesmc_temperature_set][attr->index];
+
+	return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
+}
+
 /* Displays degree Celsius * 1000 */
 static ssize_t applesmc_show_temperature(struct device *dev,
 			struct device_attribute *devattr, char *sysfsbuf)
@@ -1113,6 +1138,86 @@
 /*
  * Temperature sensors sysfs entries.
  */
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp7_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp8_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 7);
+static SENSOR_DEVICE_ATTR(temp9_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 8);
+static SENSOR_DEVICE_ATTR(temp10_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 9);
+static SENSOR_DEVICE_ATTR(temp11_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 10);
+static SENSOR_DEVICE_ATTR(temp12_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 11);
+static SENSOR_DEVICE_ATTR(temp13_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 12);
+static SENSOR_DEVICE_ATTR(temp14_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 13);
+static SENSOR_DEVICE_ATTR(temp15_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 14);
+static SENSOR_DEVICE_ATTR(temp16_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 15);
+static SENSOR_DEVICE_ATTR(temp17_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 16);
+static SENSOR_DEVICE_ATTR(temp18_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 17);
+static SENSOR_DEVICE_ATTR(temp19_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 18);
+static SENSOR_DEVICE_ATTR(temp20_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 19);
+static SENSOR_DEVICE_ATTR(temp21_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 20);
+static SENSOR_DEVICE_ATTR(temp22_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 21);
+static SENSOR_DEVICE_ATTR(temp23_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 22);
+static SENSOR_DEVICE_ATTR(temp24_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 23);
+static SENSOR_DEVICE_ATTR(temp25_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 24);
+static SENSOR_DEVICE_ATTR(temp26_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 25);
+static SENSOR_DEVICE_ATTR(temp27_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 26);
+static SENSOR_DEVICE_ATTR(temp28_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 27);
+static SENSOR_DEVICE_ATTR(temp29_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 28);
+static SENSOR_DEVICE_ATTR(temp30_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 29);
+static SENSOR_DEVICE_ATTR(temp31_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 30);
+static SENSOR_DEVICE_ATTR(temp32_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 31);
+static SENSOR_DEVICE_ATTR(temp33_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 32);
+static SENSOR_DEVICE_ATTR(temp34_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 33);
+static SENSOR_DEVICE_ATTR(temp35_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 34);
+static SENSOR_DEVICE_ATTR(temp36_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 35);
+static SENSOR_DEVICE_ATTR(temp37_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 36);
+static SENSOR_DEVICE_ATTR(temp38_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 37);
+static SENSOR_DEVICE_ATTR(temp39_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 38);
+static SENSOR_DEVICE_ATTR(temp40_label, S_IRUGO,
+					applesmc_show_sensor_label, NULL, 39);
 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
 					applesmc_show_temperature, NULL, 0);
 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
@@ -1194,6 +1299,50 @@
 static SENSOR_DEVICE_ATTR(temp40_input, S_IRUGO,
 					applesmc_show_temperature, NULL, 39);
 
+static struct attribute *label_attributes[] = {
+	&sensor_dev_attr_temp1_label.dev_attr.attr,
+	&sensor_dev_attr_temp2_label.dev_attr.attr,
+	&sensor_dev_attr_temp3_label.dev_attr.attr,
+	&sensor_dev_attr_temp4_label.dev_attr.attr,
+	&sensor_dev_attr_temp5_label.dev_attr.attr,
+	&sensor_dev_attr_temp6_label.dev_attr.attr,
+	&sensor_dev_attr_temp7_label.dev_attr.attr,
+	&sensor_dev_attr_temp8_label.dev_attr.attr,
+	&sensor_dev_attr_temp9_label.dev_attr.attr,
+	&sensor_dev_attr_temp10_label.dev_attr.attr,
+	&sensor_dev_attr_temp11_label.dev_attr.attr,
+	&sensor_dev_attr_temp12_label.dev_attr.attr,
+	&sensor_dev_attr_temp13_label.dev_attr.attr,
+	&sensor_dev_attr_temp14_label.dev_attr.attr,
+	&sensor_dev_attr_temp15_label.dev_attr.attr,
+	&sensor_dev_attr_temp16_label.dev_attr.attr,
+	&sensor_dev_attr_temp17_label.dev_attr.attr,
+	&sensor_dev_attr_temp18_label.dev_attr.attr,
+	&sensor_dev_attr_temp19_label.dev_attr.attr,
+	&sensor_dev_attr_temp20_label.dev_attr.attr,
+	&sensor_dev_attr_temp21_label.dev_attr.attr,
+	&sensor_dev_attr_temp22_label.dev_attr.attr,
+	&sensor_dev_attr_temp23_label.dev_attr.attr,
+	&sensor_dev_attr_temp24_label.dev_attr.attr,
+	&sensor_dev_attr_temp25_label.dev_attr.attr,
+	&sensor_dev_attr_temp26_label.dev_attr.attr,
+	&sensor_dev_attr_temp27_label.dev_attr.attr,
+	&sensor_dev_attr_temp28_label.dev_attr.attr,
+	&sensor_dev_attr_temp29_label.dev_attr.attr,
+	&sensor_dev_attr_temp30_label.dev_attr.attr,
+	&sensor_dev_attr_temp31_label.dev_attr.attr,
+	&sensor_dev_attr_temp32_label.dev_attr.attr,
+	&sensor_dev_attr_temp33_label.dev_attr.attr,
+	&sensor_dev_attr_temp34_label.dev_attr.attr,
+	&sensor_dev_attr_temp35_label.dev_attr.attr,
+	&sensor_dev_attr_temp36_label.dev_attr.attr,
+	&sensor_dev_attr_temp37_label.dev_attr.attr,
+	&sensor_dev_attr_temp38_label.dev_attr.attr,
+	&sensor_dev_attr_temp39_label.dev_attr.attr,
+	&sensor_dev_attr_temp40_label.dev_attr.attr,
+	NULL
+};
+
 static struct attribute *temperature_attributes[] = {
 	&sensor_dev_attr_temp1_input.dev_attr.attr,
 	&sensor_dev_attr_temp2_input.dev_attr.attr,
@@ -1241,6 +1390,10 @@
 static const struct attribute_group temperature_attributes_group =
 	{ .attrs = temperature_attributes };
 
+static const struct attribute_group label_attributes_group = {
+	.attrs = label_attributes
+};
+
 /* Module stuff */
 
 /*
@@ -1363,6 +1516,14 @@
 	{ .accelerometer = 0, .light = 0, .temperature_set = 17 },
 /* MacBook Pro 2,2: accelerometer, backlight and temperature set 18 */
 	{ .accelerometer = 1, .light = 1, .temperature_set = 18 },
+/* MacBook Pro 5,3: accelerometer, backlight and temperature set 19 */
+	{ .accelerometer = 1, .light = 1, .temperature_set = 19 },
+/* MacBook Pro 5,4: accelerometer, backlight and temperature set 20 */
+	{ .accelerometer = 1, .light = 1, .temperature_set = 20 },
+/* MacBook Pro 6,2: accelerometer, backlight and temperature set 21 */
+	{ .accelerometer = 1, .light = 1, .temperature_set = 21 },
+/* MacBook Pro 7,1: accelerometer, backlight and temperature set 22 */
+	{ .accelerometer = 1, .light = 1, .temperature_set = 22 },
 };
 
 /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
@@ -1376,6 +1537,22 @@
 	  DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
 	  DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") },
 		&applesmc_dmi_data[7]},
+	{ applesmc_dmi_match, "Apple MacBook Pro 7", {
+	  DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
+	  DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro7") },
+		&applesmc_dmi_data[22]},
+	{ applesmc_dmi_match, "Apple MacBook Pro 5,4", {
+	  DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
+	  DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,4") },
+		&applesmc_dmi_data[20]},
+	{ applesmc_dmi_match, "Apple MacBook Pro 5,3", {
+	  DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
+	  DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,3") },
+		&applesmc_dmi_data[19]},
+	{ applesmc_dmi_match, "Apple MacBook Pro 6", {
+	  DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
+	  DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro6") },
+		&applesmc_dmi_data[21]},
 	{ applesmc_dmi_match, "Apple MacBook Pro 5", {
 	  DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
 	  DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5") },
@@ -1518,7 +1695,8 @@
 	for (i = 0;
 	     temperature_sensors_sets[applesmc_temperature_set][i] != NULL;
 	     i++) {
-		if (temperature_attributes[i] == NULL) {
+		if (temperature_attributes[i] == NULL ||
+		    label_attributes[i] == NULL) {
 			printk(KERN_ERR "applesmc: More temperature sensors "
 				"in temperature_sensors_sets (at least %i)"
 				"than available sysfs files in "
@@ -1530,6 +1708,10 @@
 						temperature_attributes[i]);
 		if (ret)
 			goto out_temperature;
+		ret = sysfs_create_file(&pdev->dev.kobj,
+						label_attributes[i]);
+		if (ret)
+			goto out_temperature;
 	}
 
 	if (applesmc_accelerometer) {
@@ -1580,6 +1762,7 @@
 	if (applesmc_accelerometer)
 		applesmc_release_accelerometer();
 out_temperature:
+	sysfs_remove_group(&pdev->dev.kobj, &label_attributes_group);
 	sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
 out_fans:
 	while (fans_handled)
@@ -1609,6 +1792,7 @@
 	}
 	if (applesmc_accelerometer)
 		applesmc_release_accelerometer();
+	sysfs_remove_group(&pdev->dev.kobj, &label_attributes_group);
 	sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
 	while (fans_handled)
 		sysfs_remove_group(&pdev->dev.kobj,
diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c
index 16c4202..653db1b 100644
--- a/drivers/hwmon/asus_atk0110.c
+++ b/drivers/hwmon/asus_atk0110.c
@@ -1411,6 +1411,13 @@
 {
 	int ret;
 
+	/* Make sure it's safe to access the device through ACPI */
+	if (!acpi_resources_are_enforced()) {
+		pr_err("atk: Resources not safely usable due to "
+		       "acpi_enforce_resources kernel parameter\n");
+		return -EBUSY;
+	}
+
 	ret = acpi_bus_register_driver(&atk_driver);
 	if (ret)
 		pr_info("atk: acpi_bus_register_driver failed: %d\n", ret);
diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index 823dd28..980c17d 100644
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -1,12 +1,14 @@
 /*
- * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x and
- *             SCH5027 Super-I/O chips integrated hardware monitoring features.
- * Copyright (c) 2007, 2008 Juerg Haefliger <juergh@gmail.com>
+ * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027,
+ *             and SCH5127 Super-I/O chips integrated hardware monitoring
+ *             features.
+ * Copyright (c) 2007, 2008, 2009, 2010 Juerg Haefliger <juergh@gmail.com>
  *
  * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access
  * the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus
- * if a SCH311x chip is found. Both types of chips have very similar hardware
- * monitoring capabilities but differ in the way they can be accessed.
+ * if a SCH311x or SCH5127 chip is found. Both types of chips have very
+ * similar hardware monitoring capabilities but differ in the way they can be
+ * accessed.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -57,7 +59,7 @@
 /* Addresses to scan */
 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
 
-enum chips { dme1737, sch5027, sch311x };
+enum chips { dme1737, sch5027, sch311x, sch5127 };
 
 /* ---------------------------------------------------------------------
  * Registers
@@ -164,10 +166,29 @@
 #define DME1737_VERSTEP_MASK	0xf8
 #define SCH311X_DEVICE		0x8c
 #define SCH5027_VERSTEP		0x69
+#define SCH5127_DEVICE		0x8e
+
+/* Device ID values (global configuration register index 0x20) */
+#define DME1737_ID_1	0x77
+#define DME1737_ID_2	0x78
+#define SCH3112_ID	0x7c
+#define SCH3114_ID	0x7d
+#define SCH3116_ID	0x7f
+#define SCH5027_ID	0x89
+#define SCH5127_ID	0x86
 
 /* Length of ISA address segment */
 #define DME1737_EXTENT	2
 
+/* chip-dependent features */
+#define HAS_TEMP_OFFSET		(1 << 0)		/* bit 0 */
+#define HAS_VID			(1 << 1)		/* bit 1 */
+#define HAS_ZONE3		(1 << 2)		/* bit 2 */
+#define HAS_ZONE_HYST		(1 << 3)		/* bit 3 */
+#define HAS_PWM_MIN		(1 << 4)		/* bit 4 */
+#define HAS_FAN(ix)		(1 << ((ix) + 5))	/* bits 5-10 */
+#define HAS_PWM(ix)		(1 << ((ix) + 11))	/* bits 11-16 */
+
 /* ---------------------------------------------------------------------
  * Data structures and manipulation thereof
  * --------------------------------------------------------------------- */
@@ -187,8 +208,7 @@
 
 	u8 vid;
 	u8 pwm_rr_en;
-	u8 has_pwm;
-	u8 has_fan;
+	u32 has_features;
 
 	/* Register values */
 	u16 in[7];
@@ -224,8 +244,11 @@
 					 3300};
 static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
 					 3300};
+static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300,
+					 3300};
 #define IN_NOMINAL(type)	((type) == sch311x ? IN_NOMINAL_SCH311x : \
 				 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
+				 (type) == sch5127 ? IN_NOMINAL_SCH5127 : \
 				 IN_NOMINAL_DME1737)
 
 /* Voltage input
@@ -568,7 +591,7 @@
 
 	/* Sample register contents every 1 sec */
 	if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
-		if (data->type == dme1737) {
+		if (data->has_features & HAS_VID) {
 			data->vid = dme1737_read(data, DME1737_REG_VID) &
 				0x3f;
 		}
@@ -599,7 +622,7 @@
 					DME1737_REG_TEMP_MIN(ix));
 			data->temp_max[ix] = dme1737_read(data,
 					DME1737_REG_TEMP_MAX(ix));
-			if (data->type != sch5027) {
+			if (data->has_features & HAS_TEMP_OFFSET) {
 				data->temp_offset[ix] = dme1737_read(data,
 						DME1737_REG_TEMP_OFFSET(ix));
 			}
@@ -626,7 +649,7 @@
 		for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
 			/* Skip reading registers if optional fans are not
 			 * present */
-			if (!(data->has_fan & (1 << ix))) {
+			if (!(data->has_features & HAS_FAN(ix))) {
 				continue;
 			}
 			data->fan[ix] = dme1737_read(data,
@@ -650,7 +673,7 @@
 		for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
 			/* Skip reading registers if optional PWMs are not
 			 * present */
-			if (!(data->has_pwm & (1 << ix))) {
+			if (!(data->has_features & HAS_PWM(ix))) {
 				continue;
 			}
 			data->pwm[ix] = dme1737_read(data,
@@ -672,12 +695,24 @@
 
 		/* Thermal zone registers */
 		for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
-			data->zone_low[ix] = dme1737_read(data,
-					DME1737_REG_ZONE_LOW(ix));
-			data->zone_abs[ix] = dme1737_read(data,
-					DME1737_REG_ZONE_ABS(ix));
+			/* Skip reading registers if zone3 is not present */
+			if ((ix == 2) && !(data->has_features & HAS_ZONE3)) {
+				continue;
+			}
+			/* sch5127 zone2 registers are special */
+			if ((ix == 1) && (data->type == sch5127)) {
+				data->zone_low[1] = dme1737_read(data,
+						DME1737_REG_ZONE_LOW(2));
+				data->zone_abs[1] = dme1737_read(data,
+						DME1737_REG_ZONE_ABS(2));
+			} else {
+				data->zone_low[ix] = dme1737_read(data,
+						DME1737_REG_ZONE_LOW(ix));
+				data->zone_abs[ix] = dme1737_read(data,
+						DME1737_REG_ZONE_ABS(ix));
+			}
 		}
-		if (data->type != sch5027) {
+		if (data->has_features & HAS_ZONE_HYST) {
 			for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
 				data->zone_hyst[ix] = dme1737_read(data,
 						DME1737_REG_ZONE_HYST(ix));
@@ -1594,10 +1629,6 @@
 	&sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
 	&sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
 	&sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
-	&sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
-	&sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
-	&sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
-	&sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
 	NULL
 };
 
@@ -1605,27 +1636,23 @@
 	.attrs = dme1737_attr,
 };
 
-/* The following struct holds misc attributes, which are not available in all
- * chips. Their creation depends on the chip type which is determined during
- * module load. */
-static struct attribute *dme1737_misc_attr[] = {
-	/* Temperatures */
+/* The following struct holds temp offset attributes, which are not available
+ * in all chips. The following chips support them:
+ * DME1737, SCH311x */
+static struct attribute *dme1737_temp_offset_attr[] = {
 	&sensor_dev_attr_temp1_offset.dev_attr.attr,
 	&sensor_dev_attr_temp2_offset.dev_attr.attr,
 	&sensor_dev_attr_temp3_offset.dev_attr.attr,
-	/* Zones */
-	&sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
-	&sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
-	&sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
 	NULL
 };
 
-static const struct attribute_group dme1737_misc_group = {
-	.attrs = dme1737_misc_attr,
+static const struct attribute_group dme1737_temp_offset_group = {
+	.attrs = dme1737_temp_offset_attr,
 };
 
-/* The following struct holds VID-related attributes. Their creation
-   depends on the chip type which is determined during module load. */
+/* The following struct holds VID related attributes, which are not available
+ * in all chips. The following chips support them:
+ * DME1737 */
 static struct attribute *dme1737_vid_attr[] = {
 	&dev_attr_vrm.attr,
 	&dev_attr_cpu0_vid.attr,
@@ -1636,6 +1663,36 @@
 	.attrs = dme1737_vid_attr,
 };
 
+/* The following struct holds temp zone 3 related attributes, which are not
+ * available in all chips. The following chips support them:
+ * DME1737, SCH311x, SCH5027 */
+static struct attribute *dme1737_zone3_attr[] = {
+	&sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
+	&sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
+	&sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
+	&sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group dme1737_zone3_group = {
+	.attrs = dme1737_zone3_attr,
+};
+
+
+/* The following struct holds temp zone hysteresis  related attributes, which
+ * are not available in all chips. The following chips support them:
+ * DME1737, SCH311x */
+static struct attribute *dme1737_zone_hyst_attr[] = {
+	&sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group dme1737_zone_hyst_group = {
+	.attrs = dme1737_zone_hyst_attr,
+};
+
 /* The following structs hold the PWM attributes, some of which are optional.
  * Their creation depends on the chip configuration which is determined during
  * module load. */
@@ -1691,10 +1748,10 @@
 	{ .attrs = dme1737_pwm6_attr },
 };
 
-/* The following struct holds misc PWM attributes, which are not available in
- * all chips. Their creation depends on the chip type which is determined
+/* The following struct holds auto PWM min attributes, which are not available
+ * in all chips. Their creation depends on the chip type which is determined
  * during module load. */
-static struct attribute *dme1737_pwm_misc_attr[] = {
+static struct attribute *dme1737_auto_pwm_min_attr[] = {
 	&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
 	&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
 	&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
@@ -1764,14 +1821,25 @@
 	&sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
 	&sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
 	&sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group dme1737_zone_chmod_group = {
+	.attrs = dme1737_zone_chmod_attr,
+};
+
+
+/* The permissions of the following zone 3 attributes are changed to read-
+ * writeable if the chip is *not* locked. Otherwise they stay read-only. */
+static struct attribute *dme1737_zone3_chmod_attr[] = {
 	&sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
 	&sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
 	&sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
 	NULL
 };
 
-static const struct attribute_group dme1737_zone_chmod_group = {
-	.attrs = dme1737_zone_chmod_attr,
+static const struct attribute_group dme1737_zone3_chmod_group = {
+	.attrs = dme1737_zone3_chmod_attr,
 };
 
 /* The permissions of the following PWM attributes are changed to read-
@@ -1887,30 +1955,35 @@
 	int ix;
 
 	for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
-		if (data->has_fan & (1 << ix)) {
+		if (data->has_features & HAS_FAN(ix)) {
 			sysfs_remove_group(&dev->kobj,
 					   &dme1737_fan_group[ix]);
 		}
 	}
 
 	for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
-		if (data->has_pwm & (1 << ix)) {
+		if (data->has_features & HAS_PWM(ix)) {
 			sysfs_remove_group(&dev->kobj,
 					   &dme1737_pwm_group[ix]);
-			if (data->type != sch5027 && ix < 3) {
+			if ((data->has_features & HAS_PWM_MIN) && ix < 3) {
 				sysfs_remove_file(&dev->kobj,
-						  dme1737_pwm_misc_attr[ix]);
+						dme1737_auto_pwm_min_attr[ix]);
 			}
 		}
 	}
 
-	if (data->type != sch5027) {
-		sysfs_remove_group(&dev->kobj, &dme1737_misc_group);
+	if (data->has_features & HAS_TEMP_OFFSET) {
+		sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group);
 	}
-	if (data->type == dme1737) {
+	if (data->has_features & HAS_VID) {
 		sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
 	}
-
+	if (data->has_features & HAS_ZONE3) {
+		sysfs_remove_group(&dev->kobj, &dme1737_zone3_group);
+	}
+	if (data->has_features & HAS_ZONE_HYST) {
+		sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group);
+	}
 	sysfs_remove_group(&dev->kobj, &dme1737_group);
 
 	if (!data->client) {
@@ -1934,23 +2007,31 @@
 		goto exit_remove;
 	}
 
-	/* Create misc sysfs attributes */
-	if ((data->type != sch5027) &&
+	/* Create chip-dependent sysfs attributes */
+	if ((data->has_features & HAS_TEMP_OFFSET) &&
 	    (err = sysfs_create_group(&dev->kobj,
-				      &dme1737_misc_group))) {
+				      &dme1737_temp_offset_group))) {
 		goto exit_remove;
 	}
-
-	/* Create VID-related sysfs attributes */
-	if ((data->type == dme1737) &&
+	if ((data->has_features & HAS_VID) &&
 	    (err = sysfs_create_group(&dev->kobj,
 				      &dme1737_vid_group))) {
 		goto exit_remove;
 	}
+	if ((data->has_features & HAS_ZONE3) &&
+	    (err = sysfs_create_group(&dev->kobj,
+				      &dme1737_zone3_group))) {
+		goto exit_remove;
+	}
+	if ((data->has_features & HAS_ZONE_HYST) &&
+	    (err = sysfs_create_group(&dev->kobj,
+				      &dme1737_zone_hyst_group))) {
+		goto exit_remove;
+	}
 
 	/* Create fan sysfs attributes */
 	for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
-		if (data->has_fan & (1 << ix)) {
+		if (data->has_features & HAS_FAN(ix)) {
 			if ((err = sysfs_create_group(&dev->kobj,
 						&dme1737_fan_group[ix]))) {
 				goto exit_remove;
@@ -1960,14 +2041,14 @@
 
 	/* Create PWM sysfs attributes */
 	for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
-		if (data->has_pwm & (1 << ix)) {
+		if (data->has_features & HAS_PWM(ix)) {
 			if ((err = sysfs_create_group(&dev->kobj,
 						&dme1737_pwm_group[ix]))) {
 				goto exit_remove;
 			}
-			if (data->type != sch5027 && ix < 3 &&
+			if ((data->has_features & HAS_PWM_MIN) && ix < 3 &&
 			    (err = sysfs_create_file(&dev->kobj,
-						dme1737_pwm_misc_attr[ix]))) {
+					dme1737_auto_pwm_min_attr[ix]))) {
 				goto exit_remove;
 			}
 		}
@@ -1983,21 +2064,30 @@
 		dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
 				    S_IRUGO | S_IWUSR);
 
-		/* Change permissions of misc sysfs attributes */
-		if (data->type != sch5027) {
-			dme1737_chmod_group(dev, &dme1737_misc_group,
+		/* Change permissions of chip-dependent sysfs attributes */
+		if (data->has_features & HAS_TEMP_OFFSET) {
+			dme1737_chmod_group(dev, &dme1737_temp_offset_group,
+					    S_IRUGO | S_IWUSR);
+		}
+		if (data->has_features & HAS_ZONE3) {
+			dme1737_chmod_group(dev, &dme1737_zone3_chmod_group,
+					    S_IRUGO | S_IWUSR);
+		}
+		if (data->has_features & HAS_ZONE_HYST) {
+			dme1737_chmod_group(dev, &dme1737_zone_hyst_group,
 					    S_IRUGO | S_IWUSR);
 		}
 
 		/* Change permissions of PWM sysfs attributes */
 		for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
-			if (data->has_pwm & (1 << ix)) {
+			if (data->has_features & HAS_PWM(ix)) {
 				dme1737_chmod_group(dev,
 						&dme1737_pwm_chmod_group[ix],
 						S_IRUGO | S_IWUSR);
-				if (data->type != sch5027 && ix < 3) {
+				if ((data->has_features & HAS_PWM_MIN) &&
+				    ix < 3) {
 					dme1737_chmod_file(dev,
-						dme1737_pwm_misc_attr[ix],
+						dme1737_auto_pwm_min_attr[ix],
 						S_IRUGO | S_IWUSR);
 				}
 			}
@@ -2005,7 +2095,7 @@
 
 		/* Change permissions of pwm[1-3] if in manual mode */
 		for (ix = 0; ix < 3; ix++) {
-			if ((data->has_pwm & (1 << ix)) &&
+			if ((data->has_features & HAS_PWM(ix)) &&
 			    (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
 				dme1737_chmod_file(dev,
 						dme1737_pwm_chmod_attr[ix],
@@ -2052,20 +2142,20 @@
 		return -EFAULT;
 	}
 
-	/* Determine which optional fan and pwm features are enabled/present */
+	/* Determine which optional fan and pwm features are enabled (only
+	 * valid for I2C devices) */
 	if (client) {   /* I2C chip */
 		data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
 		/* Check if optional fan3 input is enabled */
 		if (data->config2 & 0x04) {
-			data->has_fan |= (1 << 2);
+			data->has_features |= HAS_FAN(2);
 		}
 
 		/* Fan4 and pwm3 are only available if the client's I2C address
 		 * is the default 0x2e. Otherwise the I/Os associated with
 		 * these functions are used for addr enable/select. */
 		if (client->addr == 0x2e) {
-			data->has_fan |= (1 << 3);
-			data->has_pwm |= (1 << 2);
+			data->has_features |= HAS_FAN(3) | HAS_PWM(2);
 		}
 
 		/* Determine which of the optional fan[5-6] and pwm[5-6]
@@ -2077,26 +2167,40 @@
 			dev_warn(dev, "Failed to query Super-IO for optional "
 				 "features.\n");
 		}
-	} else {   /* ISA chip */
-		/* Fan3 and pwm3 are always available. Fan[4-5] and pwm[5-6]
-		 * don't exist in the ISA chip. */
-		data->has_fan |= (1 << 2);
-		data->has_pwm |= (1 << 2);
 	}
 
-	/* Fan1, fan2, pwm1, and pwm2 are always present */
-	data->has_fan |= 0x03;
-	data->has_pwm |= 0x03;
+	/* Fan[1-2] and pwm[1-2] are present in all chips */
+	data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1);
+
+	/* Chip-dependent features */
+	switch (data->type) {
+	case dme1737:
+		data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 |
+			HAS_ZONE_HYST | HAS_PWM_MIN;
+		break;
+	case sch311x:
+		data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 |
+			HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2);
+		break;
+	case sch5027:
+		data->has_features |= HAS_ZONE3;
+		break;
+	case sch5127:
+		data->has_features |= HAS_FAN(2) | HAS_PWM(2);
+		break;
+	default:
+		break;
+	}
 
 	dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
 		 "fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
-		 (data->has_pwm & (1 << 2)) ? "yes" : "no",
-		 (data->has_pwm & (1 << 4)) ? "yes" : "no",
-		 (data->has_pwm & (1 << 5)) ? "yes" : "no",
-		 (data->has_fan & (1 << 2)) ? "yes" : "no",
-		 (data->has_fan & (1 << 3)) ? "yes" : "no",
-		 (data->has_fan & (1 << 4)) ? "yes" : "no",
-		 (data->has_fan & (1 << 5)) ? "yes" : "no");
+		 (data->has_features & HAS_PWM(2)) ? "yes" : "no",
+		 (data->has_features & HAS_PWM(4)) ? "yes" : "no",
+		 (data->has_features & HAS_PWM(5)) ? "yes" : "no",
+		 (data->has_features & HAS_FAN(2)) ? "yes" : "no",
+		 (data->has_features & HAS_FAN(3)) ? "yes" : "no",
+		 (data->has_features & HAS_FAN(4)) ? "yes" : "no",
+		 (data->has_features & HAS_FAN(5)) ? "yes" : "no");
 
 	reg = dme1737_read(data, DME1737_REG_TACH_PWM);
 	/* Inform if fan-to-pwm mapping differs from the default */
@@ -2122,7 +2226,7 @@
 		for (ix = 0; ix < 3; ix++) {
 			data->pwm_config[ix] = dme1737_read(data,
 						DME1737_REG_PWM_CONFIG(ix));
-			if ((data->has_pwm & (1 << ix)) &&
+			if ((data->has_features & HAS_PWM(ix)) &&
 			    (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
 				dev_info(dev, "Switching pwm%d to "
 					 "manual mode.\n", ix + 1);
@@ -2142,7 +2246,7 @@
 	data->pwm_acz[2] = 4;	/* pwm3 -> zone3 */
 
 	/* Set VRM */
-	if (data->type == dme1737) {
+	if (data->has_features & HAS_VID) {
 		data->vrm = vid_which_vrm();
 	}
 
@@ -2163,10 +2267,10 @@
 	dme1737_sio_enter(sio_cip);
 
 	/* Check device ID
-	 * The DME1737 can return either 0x78 or 0x77 as its device ID.
-	 * The SCH5027 returns 0x89 as its device ID. */
+	 * We currently know about two kinds of DME1737 and SCH5027. */
 	reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
-	if (!(reg == 0x77 || reg == 0x78 || reg == 0x89)) {
+	if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 ||
+	      reg == SCH5027_ID)) {
 		err = -ENODEV;
 		goto exit;
 	}
@@ -2185,16 +2289,16 @@
 	 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
 	 * to '10' if the respective feature is enabled. */
 	if ((inb(addr + 0x43) & 0x0c) == 0x08) { /* fan6 */
-		data->has_fan |= (1 << 5);
+		data->has_features |= HAS_FAN(5);
 	}
 	if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */
-		data->has_pwm |= (1 << 5);
+		data->has_features |= HAS_PWM(5);
 	}
 	if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */
-		data->has_fan |= (1 << 4);
+		data->has_features |= HAS_FAN(4);
 	}
 	if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */
-		data->has_pwm |= (1 << 4);
+		data->has_features |= HAS_PWM(4);
 	}
 
 exit:
@@ -2222,7 +2326,6 @@
 	if (company == DME1737_COMPANY_SMSC &&
 	    verstep == SCH5027_VERSTEP) {
 		name = "sch5027";
-
 	} else if (company == DME1737_COMPANY_SMSC &&
 		   (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
 		name = "dme1737";
@@ -2329,10 +2432,10 @@
 	dme1737_sio_enter(sio_cip);
 
 	/* Check device ID
-	 * We currently know about SCH3112 (0x7c), SCH3114 (0x7d), and
-	 * SCH3116 (0x7f). */
+	 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127 */
 	reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
-	if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) {
+	if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
+	      reg == SCH5127_ID)) {
 		err = -ENODEV;
 		goto exit;
 	}
@@ -2424,23 +2527,42 @@
 	platform_set_drvdata(pdev, data);
 
 	/* Skip chip detection if module is loaded with force_id parameter */
-	if (!force_id) {
+	switch (force_id) {
+	case SCH3112_ID:
+	case SCH3114_ID:
+	case SCH3116_ID:
+		data->type = sch311x;
+		break;
+	case SCH5127_ID:
+		data->type = sch5127;
+		break;
+	default:
 		company = dme1737_read(data, DME1737_REG_COMPANY);
 		device = dme1737_read(data, DME1737_REG_DEVICE);
 
-		if (!((company == DME1737_COMPANY_SMSC) &&
-		      (device == SCH311X_DEVICE))) {
+		if ((company == DME1737_COMPANY_SMSC) &&
+		    (device == SCH311X_DEVICE)) {
+			data->type = sch311x;
+		} else if ((company == DME1737_COMPANY_SMSC) &&
+			   (device == SCH5127_DEVICE)) {
+			data->type = sch5127;
+		} else {
 			err = -ENODEV;
 			goto exit_kfree;
 		}
 	}
-	data->type = sch311x;
 
-	/* Fill in the remaining client fields and initialize the mutex */
-	data->name = "sch311x";
+	if (data->type == sch5127) {
+		data->name = "sch5127";
+	} else {
+		data->name = "sch311x";
+	}
+
+	/* Initialize the mutex */
 	mutex_init(&data->update_lock);
 
-	dev_info(dev, "Found a SCH311x chip at 0x%04x\n", data->addr);
+	dev_info(dev, "Found a %s chip at 0x%04x\n",
+		 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
 
 	/* Initialize the chip */
 	if ((err = dme1737_init_device(dev))) {
diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
new file mode 100644
index 0000000..0e4b564
--- /dev/null
+++ b/drivers/hwmon/emc1403.c
@@ -0,0 +1,344 @@
+/*
+ * emc1403.c - SMSC Thermal Driver
+ *
+ * Copyright (C) 2008 Intel Corp
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * TODO
+ *	-	cache alarm and critical limit registers
+ *	-	add emc1404 support
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/sysfs.h>
+#include <linux/mutex.h>
+
+#define THERMAL_PID_REG		0xfd
+#define THERMAL_SMSC_ID_REG	0xfe
+#define THERMAL_REVISION_REG	0xff
+
+struct thermal_data {
+	struct device *hwmon_dev;
+	struct mutex mutex;
+	/* Cache the hyst value so we don't keep re-reading it. In theory
+	   we could cache it forever as nobody else should be writing it. */
+	u8 cached_hyst;
+	unsigned long hyst_valid;
+};
+
+static ssize_t show_temp(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
+	int retval = i2c_smbus_read_byte_data(client, sda->index);
+
+	if (retval < 0)
+		return retval;
+	return sprintf(buf, "%d000\n", retval);
+}
+
+static ssize_t show_bit(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct sensor_device_attribute_2 *sda = to_sensor_dev_attr_2(attr);
+	int retval = i2c_smbus_read_byte_data(client, sda->nr);
+
+	if (retval < 0)
+		return retval;
+	retval &= sda->index;
+	return sprintf(buf, "%d\n", retval ? 1 : 0);
+}
+
+static ssize_t store_temp(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
+	struct i2c_client *client = to_i2c_client(dev);
+	unsigned long val;
+	int retval;
+
+	if (strict_strtoul(buf, 10, &val))
+		return -EINVAL;
+	retval = i2c_smbus_write_byte_data(client, sda->index,
+					DIV_ROUND_CLOSEST(val, 1000));
+	if (retval < 0)
+		return retval;
+	return count;
+}
+
+static ssize_t show_hyst(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct thermal_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
+	int retval;
+	int hyst;
+
+	retval = i2c_smbus_read_byte_data(client, sda->index);
+	if (retval < 0)
+		return retval;
+
+	if (time_after(jiffies, data->hyst_valid)) {
+		hyst = i2c_smbus_read_byte_data(client, 0x21);
+		if (hyst < 0)
+			return retval;
+		data->cached_hyst = hyst;
+		data->hyst_valid = jiffies + HZ;
+	}
+	return sprintf(buf, "%d000\n", retval - data->cached_hyst);
+}
+
+static ssize_t store_hyst(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct thermal_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
+	int retval;
+	int hyst;
+	unsigned long val;
+
+	if (strict_strtoul(buf, 10, &val))
+		return -EINVAL;
+
+	mutex_lock(&data->mutex);
+	retval = i2c_smbus_read_byte_data(client, sda->index);
+	if (retval < 0)
+		goto fail;
+
+	hyst = val - retval * 1000;
+	hyst = DIV_ROUND_CLOSEST(hyst, 1000);
+	if (hyst < 0 || hyst > 255) {
+		retval = -ERANGE;
+		goto fail;
+	}
+
+	retval = i2c_smbus_write_byte_data(client, 0x21, hyst);
+	if (retval == 0) {
+		retval = count;
+		data->cached_hyst = hyst;
+		data->hyst_valid = jiffies + HZ;
+	}
+fail:
+	mutex_unlock(&data->mutex);
+	return retval;
+}
+
+/*
+ *	Sensors. We pass the actual i2c register to the methods.
+ */
+
+static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x06);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x05);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x20);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0x00);
+static SENSOR_DEVICE_ATTR_2(temp1_min_alarm, S_IRUGO,
+	show_bit, NULL, 0x36, 0x01);
+static SENSOR_DEVICE_ATTR_2(temp1_max_alarm, S_IRUGO,
+	show_bit, NULL, 0x35, 0x01);
+static SENSOR_DEVICE_ATTR_2(temp1_crit_alarm, S_IRUGO,
+	show_bit, NULL, 0x37, 0x01);
+static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO | S_IWUSR,
+	show_hyst, store_hyst, 0x20);
+
+static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x08);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x07);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x19);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0x01);
+static SENSOR_DEVICE_ATTR_2(temp2_min_alarm, S_IRUGO,
+	show_bit, NULL, 0x36, 0x02);
+static SENSOR_DEVICE_ATTR_2(temp2_max_alarm, S_IRUGO,
+	show_bit, NULL, 0x35, 0x02);
+static SENSOR_DEVICE_ATTR_2(temp2_crit_alarm, S_IRUGO,
+	show_bit, NULL, 0x37, 0x02);
+static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO | S_IWUSR,
+	show_hyst, store_hyst, 0x19);
+
+static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x16);
+static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x15);
+static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
+	show_temp, store_temp, 0x1A);
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 0x23);
+static SENSOR_DEVICE_ATTR_2(temp3_min_alarm, S_IRUGO,
+	show_bit, NULL, 0x36, 0x04);
+static SENSOR_DEVICE_ATTR_2(temp3_max_alarm, S_IRUGO,
+	show_bit, NULL, 0x35, 0x04);
+static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO,
+	show_bit, NULL, 0x37, 0x04);
+static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO | S_IWUSR,
+	show_hyst, store_hyst, 0x1A);
+
+static struct attribute *mid_att_thermal[] = {
+	&sensor_dev_attr_temp1_min.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit.dev_attr.attr,
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp2_min.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp3_min.dev_attr.attr,
+	&sensor_dev_attr_temp3_max.dev_attr.attr,
+	&sensor_dev_attr_temp3_crit.dev_attr.attr,
+	&sensor_dev_attr_temp3_input.dev_attr.attr,
+	&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group m_thermal_gr = {
+	.attrs = mid_att_thermal
+};
+
+static int emc1403_detect(struct i2c_client *client,
+			struct i2c_board_info *info)
+{
+	int id;
+	/* Check if thermal chip is SMSC and EMC1403 */
+
+	id = i2c_smbus_read_byte_data(client, THERMAL_SMSC_ID_REG);
+	if (id != 0x5d)
+		return -ENODEV;
+
+	/* Note: 0x25 is the 1404 which is very similar and this
+	   driver could be extended */
+	id = i2c_smbus_read_byte_data(client, THERMAL_PID_REG);
+	if (id != 0x21)
+		return -ENODEV;
+
+	id = i2c_smbus_read_byte_data(client, THERMAL_REVISION_REG);
+	if (id != 0x01)
+		return -ENODEV;
+
+	strlcpy(info->type, "emc1403", I2C_NAME_SIZE);
+	return 0;
+}
+
+static int emc1403_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	int res;
+	struct thermal_data *data;
+
+	data = kzalloc(sizeof(struct thermal_data), GFP_KERNEL);
+	if (data == NULL) {
+		dev_warn(&client->dev, "out of memory");
+		return -ENOMEM;
+	}
+
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->mutex);
+	data->hyst_valid = jiffies - 1;		/* Expired */
+
+	res = sysfs_create_group(&client->dev.kobj, &m_thermal_gr);
+	if (res) {
+		dev_warn(&client->dev, "create group failed\n");
+		hwmon_device_unregister(data->hwmon_dev);
+		goto thermal_error1;
+	}
+	data->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		res = PTR_ERR(data->hwmon_dev);
+		dev_warn(&client->dev, "register hwmon dev failed\n");
+		goto thermal_error2;
+	}
+	dev_info(&client->dev, "EMC1403 Thermal chip found\n");
+	return res;
+
+thermal_error2:
+	sysfs_remove_group(&client->dev.kobj, &m_thermal_gr);
+thermal_error1:
+	kfree(data);
+	return res;
+}
+
+static int emc1403_remove(struct i2c_client *client)
+{
+	struct thermal_data *data = i2c_get_clientdata(client);
+
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&client->dev.kobj, &m_thermal_gr);
+	kfree(data);
+	return 0;
+}
+
+static const unsigned short emc1403_address_list[] = {
+	0x18, 0x2a, 0x4c, 0x4d, I2C_CLIENT_END
+};
+
+static const struct i2c_device_id emc1403_idtable[] = {
+	{ "emc1403", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, emc1403_idtable);
+
+static struct i2c_driver sensor_emc1403 = {
+	.class = I2C_CLASS_HWMON,
+	.driver = {
+		.name = "emc1403",
+	},
+	.detect = emc1403_detect,
+	.probe = emc1403_probe,
+	.remove = emc1403_remove,
+	.id_table = emc1403_idtable,
+	.address_list = emc1403_address_list,
+};
+
+static int __init sensor_emc1403_init(void)
+{
+	return i2c_add_driver(&sensor_emc1403);
+}
+
+static void  __exit sensor_emc1403_exit(void)
+{
+	i2c_del_driver(&sensor_emc1403);
+}
+
+module_init(sensor_emc1403_init);
+module_exit(sensor_emc1403_exit);
+
+MODULE_AUTHOR("Kalhan Trisal <kalhan.trisal@intel.com");
+MODULE_DESCRIPTION("emc1403 Thermal Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index a95fa42..537841e 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -856,21 +856,19 @@
 static int superio_inw(int base, int reg)
 {
 	int val;
-	outb(reg++, base);
-	val = inb(base + 1) << 8;
-	outb(reg, base);
-	val |= inb(base + 1);
+	val  = superio_inb(base, reg) << 8;
+	val |= superio_inb(base, reg + 1);
 	return val;
 }
 
 static inline void superio_enter(int base)
 {
 	/* according to the datasheet the key must be send twice! */
-	outb( SIO_UNLOCK_KEY, base);
-	outb( SIO_UNLOCK_KEY, base);
+	outb(SIO_UNLOCK_KEY, base);
+	outb(SIO_UNLOCK_KEY, base);
 }
 
-static inline void superio_select( int base, int ld)
+static inline void superio_select(int base, int ld)
 {
 	outb(SIO_REG_LDSEL, base);
 	outb(ld, base + 1);
@@ -905,10 +903,8 @@
 {
 	u16 val;
 
-	outb(reg++, data->addr + ADDR_REG_OFFSET);
-	val = inb(data->addr + DATA_REG_OFFSET) << 8;
-	outb(reg, data->addr + ADDR_REG_OFFSET);
-	val |= inb(data->addr + DATA_REG_OFFSET);
+	val  = f71882fg_read8(data, reg) << 8;
+	val |= f71882fg_read8(data, reg + 1);
 
 	return val;
 }
@@ -921,10 +917,8 @@
 
 static void f71882fg_write16(struct f71882fg_data *data, u8 reg, u16 val)
 {
-	outb(reg++, data->addr + ADDR_REG_OFFSET);
-	outb(val >> 8, data->addr + DATA_REG_OFFSET);
-	outb(reg, data->addr + ADDR_REG_OFFSET);
-	outb(val & 255, data->addr + DATA_REG_OFFSET);
+	f71882fg_write8(data, reg,     val >> 8);
+	f71882fg_write8(data, reg + 1, val & 0xff);
 }
 
 static u16 f71882fg_read_temp(struct f71882fg_data *data, int nr)
@@ -945,7 +939,7 @@
 	mutex_lock(&data->update_lock);
 
 	/* Update once every 60 seconds */
-	if ( time_after(jiffies, data->last_limits + 60 * HZ ) ||
+	if (time_after(jiffies, data->last_limits + 60 * HZ) ||
 			!data->valid) {
 		if (data->type == f71882fg || data->type == f71889fg) {
 			data->in1_max =
@@ -1127,8 +1121,12 @@
 				    const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	val = SENSORS_LIMIT(val, 23, 1500000);
 	val = fan_to_reg(val);
@@ -1157,8 +1155,12 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	unsigned long val;
+
+	err = strict_strtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP);
@@ -1206,7 +1208,14 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	long val = simple_strtol(buf, NULL, 10) / 8;
+	int err;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	val /= 8;
 	val = SENSORS_LIMIT(val, 0, 255);
 
 	mutex_lock(&data->update_lock);
@@ -1233,8 +1242,12 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	unsigned long val;
+
+	err = strict_strtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP);
@@ -1299,8 +1312,14 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10) / 1000;
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	val /= 1000;
 	val = SENSORS_LIMIT(val, 0, 255);
 
 	mutex_lock(&data->update_lock);
@@ -1333,10 +1352,16 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10) / 1000;
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
 	ssize_t ret = count;
 	u8 reg;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	val /= 1000;
 
 	mutex_lock(&data->update_lock);
 
@@ -1372,8 +1397,14 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10) / 1000;
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	val /= 1000;
 	val = SENSORS_LIMIT(val, 0, 255);
 
 	mutex_lock(&data->update_lock);
@@ -1427,8 +1458,12 @@
 	*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	unsigned long val;
+
+	err = strict_strtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
@@ -1490,8 +1525,13 @@
 			 size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
 	val = SENSORS_LIMIT(val, 0, 255);
 
 	mutex_lock(&data->update_lock);
@@ -1551,8 +1591,12 @@
 				*devattr, const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	/* Special case for F8000 pwm channel 3 which only does auto mode */
 	if (data->type == f8000 && nr == 2 && val != 2)
@@ -1626,9 +1670,14 @@
 					const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int pwm = to_sensor_dev_attr_2(devattr)->index;
+	int err, pwm = to_sensor_dev_attr_2(devattr)->index;
 	int point = to_sensor_dev_attr_2(devattr)->nr;
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
 	val = SENSORS_LIMIT(val, 0, 255);
 
 	mutex_lock(&data->update_lock);
@@ -1674,10 +1723,16 @@
 					      const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
 	int point = to_sensor_dev_attr_2(devattr)->nr;
-	long val = simple_strtol(buf, NULL, 10) / 1000;
 	u8 reg;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	val /= 1000;
 
 	mutex_lock(&data->update_lock);
 	data->pwm_auto_point_temp[nr][point] =
@@ -1716,8 +1771,12 @@
 				     const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	unsigned long val;
+
+	err = strict_strtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->pwm_auto_point_mapping[nr] =
@@ -1752,8 +1811,12 @@
 					    const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr = to_sensor_dev_attr_2(devattr)->index;
-	long val = simple_strtol(buf, NULL, 10);
+	int err, nr = to_sensor_dev_attr_2(devattr)->index;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	switch (val) {
 	case 1:
@@ -1798,9 +1861,15 @@
 					 const char *buf, size_t count)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int pwm = to_sensor_dev_attr_2(devattr)->index;
+	int err, pwm = to_sensor_dev_attr_2(devattr)->index;
 	int point = to_sensor_dev_attr_2(devattr)->nr;
-	long val = simple_strtol(buf, NULL, 10) / 1000;
+	long val;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	val /= 1000;
 
 	if (data->type == f71889fg)
 		val = SENSORS_LIMIT(val, -128, 127);
@@ -2109,6 +2178,13 @@
 	int err = -ENODEV;
 	u16 devid;
 
+	/* Don't step on other drivers' I/O space by accident */
+	if (!request_region(sioaddr, 2, DRVNAME)) {
+		printk(KERN_ERR DRVNAME ": I/O address 0x%04x already in use\n",
+				(int)sioaddr);
+		return -EBUSY;
+	}
+
 	superio_enter(sioaddr);
 
 	devid = superio_inw(sioaddr, SIO_REG_MANID);
@@ -2151,8 +2227,7 @@
 	}
 
 	*address = superio_inw(sioaddr, SIO_REG_ADDR);
-	if (*address == 0)
-	{
+	if (*address == 0) {
 		printk(KERN_WARNING DRVNAME ": Base address not set\n");
 		goto exit;
 	}
@@ -2164,6 +2239,7 @@
 		(int)superio_inb(sioaddr, SIO_REG_DEVREV));
 exit:
 	superio_exit(sioaddr);
+	release_region(sioaddr, 2);
 	return err;
 }
 
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
index bf81aff..776aeb3 100644
--- a/drivers/hwmon/lm63.c
+++ b/drivers/hwmon/lm63.c
@@ -53,7 +53,7 @@
  * Address is fully defined internally and cannot be changed.
  */
 
-static const unsigned short normal_i2c[] = { 0x4c, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END };
 
 /*
  * The LM63 registers
@@ -131,12 +131,15 @@
 static int lm63_detect(struct i2c_client *client, struct i2c_board_info *info);
 static void lm63_init_client(struct i2c_client *client);
 
+enum chips { lm63, lm64 };
+
 /*
  * Driver data (common to all clients)
  */
 
 static const struct i2c_device_id lm63_id[] = {
-	{ "lm63", 0 },
+	{ "lm63", lm63 },
+	{ "lm64", lm64 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, lm63_id);
@@ -422,6 +425,7 @@
 	struct i2c_adapter *adapter = new_client->adapter;
 	u8 man_id, chip_id, reg_config1, reg_config2;
 	u8 reg_alert_status, reg_alert_mask;
+	int address = new_client->addr;
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return -ENODEV;
@@ -439,7 +443,6 @@
 			 LM63_REG_ALERT_MASK);
 
 	if (man_id != 0x01 /* National Semiconductor */
-	 || chip_id != 0x41 /* LM63 */
 	 || (reg_config1 & 0x18) != 0x00
 	 || (reg_config2 & 0xF8) != 0x00
 	 || (reg_alert_status & 0x20) != 0x00
@@ -450,7 +453,12 @@
 		return -ENODEV;
 	}
 
-	strlcpy(info->type, "lm63", I2C_NAME_SIZE);
+	if (chip_id == 0x41 && address == 0x4c)
+		strlcpy(info->type, "lm63", I2C_NAME_SIZE);
+	else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e))
+		strlcpy(info->type, "lm64", I2C_NAME_SIZE);
+	else
+		return -ENODEV;
 
 	return 0;
 }
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 8ae2cfe..5646342 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -46,6 +46,7 @@
 	tcn75,
 	tmp100,
 	tmp101,
+	tmp105,
 	tmp175,
 	tmp275,
 	tmp75,
@@ -220,6 +221,7 @@
 	{ "tcn75", tcn75, },
 	{ "tmp100", tmp100, },
 	{ "tmp101", tmp101, },
+	{ "tmp105", tmp105, },
 	{ "tmp175", tmp175, },
 	{ "tmp275", tmp275, },
 	{ "tmp75", tmp75, },
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 7cc2708..760ef72 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -982,7 +982,8 @@
 
 	mutex_lock(&data->update_lock);
 
-	if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
+	if (time_after(jiffies, data->last_updated + HZ / 2 + HZ / 10)
+	 || !data->valid) {
 		u8 h, l;
 
 		dev_dbg(&client->dev, "Updating lm90 data.\n");
diff --git a/drivers/hwmon/ltc4245.c b/drivers/hwmon/ltc4245.c
index 65c232a..21d201b 100644
--- a/drivers/hwmon/ltc4245.c
+++ b/drivers/hwmon/ltc4245.c
@@ -45,9 +45,7 @@
 	LTC4245_VEEIN			= 0x19,
 	LTC4245_VEESENSE		= 0x1a,
 	LTC4245_VEEOUT			= 0x1b,
-	LTC4245_GPIOADC1		= 0x1c,
-	LTC4245_GPIOADC2		= 0x1d,
-	LTC4245_GPIOADC3		= 0x1e,
+	LTC4245_GPIOADC			= 0x1c,
 };
 
 struct ltc4245_data {
@@ -61,7 +59,7 @@
 	u8 cregs[0x08];
 
 	/* Voltage registers */
-	u8 vregs[0x0f];
+	u8 vregs[0x0d];
 };
 
 static struct ltc4245_data *ltc4245_update_device(struct device *dev)
@@ -86,7 +84,7 @@
 				data->cregs[i] = val;
 		}
 
-		/* Read voltage registers -- 0x10 to 0x1f */
+		/* Read voltage registers -- 0x10 to 0x1c */
 		for (i = 0; i < ARRAY_SIZE(data->vregs); i++) {
 			val = i2c_smbus_read_byte_data(client, i+0x10);
 			if (unlikely(val < 0))
@@ -128,9 +126,7 @@
 	case LTC4245_VEEOUT:
 		voltage = regval * -55;
 		break;
-	case LTC4245_GPIOADC1:
-	case LTC4245_GPIOADC2:
-	case LTC4245_GPIOADC3:
+	case LTC4245_GPIOADC:
 		voltage = regval * 10;
 		break;
 	default:
@@ -297,9 +293,7 @@
 LTC4245_ALARM(in8_min_alarm,	(1 << 3),	LTC4245_FAULT2);
 
 /* GPIO voltages */
-LTC4245_VOLTAGE(in9_input,			LTC4245_GPIOADC1);
-LTC4245_VOLTAGE(in10_input,			LTC4245_GPIOADC2);
-LTC4245_VOLTAGE(in11_input,			LTC4245_GPIOADC3);
+LTC4245_VOLTAGE(in9_input,			LTC4245_GPIOADC);
 
 /* Power Consumption (virtual) */
 LTC4245_POWER(power1_input,			LTC4245_12VSENSE);
@@ -342,8 +336,6 @@
 	&sensor_dev_attr_in8_min_alarm.dev_attr.attr,
 
 	&sensor_dev_attr_in9_input.dev_attr.attr,
-	&sensor_dev_attr_in10_input.dev_attr.attr,
-	&sensor_dev_attr_in11_input.dev_attr.attr,
 
 	&sensor_dev_attr_power1_input.dev_attr.attr,
 	&sensor_dev_attr_power2_input.dev_attr.attr,
diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c
new file mode 100644
index 0000000..8013895
--- /dev/null
+++ b/drivers/hwmon/tmp102.c
@@ -0,0 +1,321 @@
+/* Texas Instruments TMP102 SMBus temperature sensor driver
+ *
+ * Copyright (C) 2010 Steven King <sfking@fdwdc.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+
+#define	DRIVER_NAME "tmp102"
+
+#define	TMP102_TEMP_REG			0x00
+#define	TMP102_CONF_REG			0x01
+/* note: these bit definitions are byte swapped */
+#define		TMP102_CONF_SD		0x0100
+#define		TMP102_CONF_TM		0x0200
+#define		TMP102_CONF_POL		0x0400
+#define		TMP102_CONF_F0		0x0800
+#define		TMP102_CONF_F1		0x1000
+#define		TMP102_CONF_R0		0x2000
+#define		TMP102_CONF_R1		0x4000
+#define		TMP102_CONF_OS		0x8000
+#define		TMP102_CONF_EM		0x0010
+#define		TMP102_CONF_AL		0x0020
+#define		TMP102_CONF_CR0		0x0040
+#define		TMP102_CONF_CR1		0x0080
+#define	TMP102_TLOW_REG			0x02
+#define	TMP102_THIGH_REG		0x03
+
+struct tmp102 {
+	struct device *hwmon_dev;
+	struct mutex lock;
+	u16 config_orig;
+	unsigned long last_update;
+	int temp[3];
+};
+
+/* SMBus specifies low byte first, but the TMP102 returns high byte first,
+ * so we have to swab16 the values */
+static inline int tmp102_read_reg(struct i2c_client *client, u8 reg)
+{
+	int result = i2c_smbus_read_word_data(client, reg);
+	return result < 0 ? result : swab16(result);
+}
+
+static inline int tmp102_write_reg(struct i2c_client *client, u8 reg, u16 val)
+{
+	return i2c_smbus_write_word_data(client, reg, swab16(val));
+}
+
+/* convert left adjusted 13-bit TMP102 register value to milliCelsius */
+static inline int tmp102_reg_to_mC(s16 val)
+{
+	return ((val & ~0x01) * 1000) / 128;
+}
+
+/* convert milliCelsius to left adjusted 13-bit TMP102 register value */
+static inline u16 tmp102_mC_to_reg(int val)
+{
+	return (val * 128) / 1000;
+}
+
+static const u8 tmp102_reg[] = {
+	TMP102_TEMP_REG,
+	TMP102_TLOW_REG,
+	TMP102_THIGH_REG,
+};
+
+static struct tmp102 *tmp102_update_device(struct i2c_client *client)
+{
+	struct tmp102 *tmp102 = i2c_get_clientdata(client);
+
+	mutex_lock(&tmp102->lock);
+	if (time_after(jiffies, tmp102->last_update + HZ / 3)) {
+		int i;
+		for (i = 0; i < ARRAY_SIZE(tmp102->temp); ++i) {
+			int status = tmp102_read_reg(client, tmp102_reg[i]);
+			if (status > -1)
+				tmp102->temp[i] = tmp102_reg_to_mC(status);
+		}
+		tmp102->last_update = jiffies;
+	}
+	mutex_unlock(&tmp102->lock);
+	return tmp102;
+}
+
+static ssize_t tmp102_show_temp(struct device *dev,
+				struct device_attribute *attr,
+				char *buf)
+{
+	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
+	struct tmp102 *tmp102 = tmp102_update_device(to_i2c_client(dev));
+
+	return sprintf(buf, "%d\n", tmp102->temp[sda->index]);
+}
+
+static ssize_t tmp102_set_temp(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct tmp102 *tmp102 = i2c_get_clientdata(client);
+	long val;
+	int status;
+
+	if (strict_strtol(buf, 10, &val) < 0)
+		return -EINVAL;
+	val = SENSORS_LIMIT(val, -256000, 255000);
+
+	mutex_lock(&tmp102->lock);
+	tmp102->temp[sda->index] = val;
+	status = tmp102_write_reg(client, tmp102_reg[sda->index],
+				  tmp102_mC_to_reg(val));
+	mutex_unlock(&tmp102->lock);
+	return status ? : count;
+}
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, tmp102_show_temp, NULL , 0);
+
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, tmp102_show_temp,
+			  tmp102_set_temp, 1);
+
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, tmp102_show_temp,
+			  tmp102_set_temp, 2);
+
+static struct attribute *tmp102_attributes[] = {
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group tmp102_attr_group = {
+	.attrs = tmp102_attributes,
+};
+
+#define TMP102_CONFIG  (TMP102_CONF_TM | TMP102_CONF_EM | TMP102_CONF_CR1)
+#define TMP102_CONFIG_RD_ONLY (TMP102_CONF_R0 | TMP102_CONF_R1 | TMP102_CONF_AL)
+
+static int __devinit tmp102_probe(struct i2c_client *client,
+				  const struct i2c_device_id *id)
+{
+	struct tmp102 *tmp102;
+	int status;
+
+	if (!i2c_check_functionality(client->adapter,
+				     I2C_FUNC_SMBUS_WORD_DATA)) {
+		dev_err(&client->dev, "adapter doesnt support SMBus word "
+			"transactions\n");
+		return -ENODEV;
+	}
+
+	tmp102 = kzalloc(sizeof(*tmp102), GFP_KERNEL);
+	if (!tmp102) {
+		dev_dbg(&client->dev, "kzalloc failed\n");
+		return -ENOMEM;
+	}
+	i2c_set_clientdata(client, tmp102);
+
+	status = tmp102_read_reg(client, TMP102_CONF_REG);
+	if (status < 0) {
+		dev_err(&client->dev, "error reading config register\n");
+		goto fail_free;
+	}
+	tmp102->config_orig = status;
+	status = tmp102_write_reg(client, TMP102_CONF_REG, TMP102_CONFIG);
+	if (status < 0) {
+		dev_err(&client->dev, "error writing config register\n");
+		goto fail_restore_config;
+	}
+	status = tmp102_read_reg(client, TMP102_CONF_REG);
+	if (status < 0) {
+		dev_err(&client->dev, "error reading config register\n");
+		goto fail_restore_config;
+	}
+	status &= ~TMP102_CONFIG_RD_ONLY;
+	if (status != TMP102_CONFIG) {
+		dev_err(&client->dev, "config settings did not stick\n");
+		status = -ENODEV;
+		goto fail_restore_config;
+	}
+	tmp102->last_update = jiffies - HZ;
+	mutex_init(&tmp102->lock);
+
+	status = sysfs_create_group(&client->dev.kobj, &tmp102_attr_group);
+	if (status) {
+		dev_dbg(&client->dev, "could not create sysfs files\n");
+		goto fail_restore_config;
+	}
+	tmp102->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(tmp102->hwmon_dev)) {
+		dev_dbg(&client->dev, "unable to register hwmon device\n");
+		status = PTR_ERR(tmp102->hwmon_dev);
+		goto fail_remove_sysfs;
+	}
+
+	dev_info(&client->dev, "initialized\n");
+
+	return 0;
+
+fail_remove_sysfs:
+	sysfs_remove_group(&client->dev.kobj, &tmp102_attr_group);
+fail_restore_config:
+	tmp102_write_reg(client, TMP102_CONF_REG, tmp102->config_orig);
+fail_free:
+	i2c_set_clientdata(client, NULL);
+	kfree(tmp102);
+
+	return status;
+}
+
+static int __devexit tmp102_remove(struct i2c_client *client)
+{
+	struct tmp102 *tmp102 = i2c_get_clientdata(client);
+
+	hwmon_device_unregister(tmp102->hwmon_dev);
+	sysfs_remove_group(&client->dev.kobj, &tmp102_attr_group);
+
+	/* Stop monitoring if device was stopped originally */
+	if (tmp102->config_orig & TMP102_CONF_SD) {
+		int config;
+
+		config = tmp102_read_reg(client, TMP102_CONF_REG);
+		if (config >= 0)
+			tmp102_write_reg(client, TMP102_CONF_REG,
+					 config | TMP102_CONF_SD);
+	}
+
+	i2c_set_clientdata(client, NULL);
+	kfree(tmp102);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int tmp102_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	int config;
+
+	config = tmp102_read_reg(client, TMP102_CONF_REG);
+	if (config < 0)
+		return config;
+
+	config |= TMP102_CONF_SD;
+	return tmp102_write_reg(client, TMP102_CONF_REG, config);
+}
+
+static int tmp102_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	int config;
+
+	config = tmp102_read_reg(client, TMP102_CONF_REG);
+	if (config < 0)
+		return config;
+
+	config &= ~TMP102_CONF_SD;
+	return tmp102_write_reg(client, TMP102_CONF_REG, config);
+}
+
+static const struct dev_pm_ops tmp102_dev_pm_ops = {
+	.suspend	= tmp102_suspend,
+	.resume		= tmp102_resume,
+};
+
+#define TMP102_DEV_PM_OPS (&tmp102_dev_pm_ops)
+#else
+#define	TMP102_DEV_PM_OPS NULL
+#endif /* CONFIG_PM */
+
+static const struct i2c_device_id tmp102_id[] = {
+	{ "tmp102", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, tmp102_id);
+
+static struct i2c_driver tmp102_driver = {
+	.driver.name	= DRIVER_NAME,
+	.driver.pm	= TMP102_DEV_PM_OPS,
+	.probe		= tmp102_probe,
+	.remove		= __devexit_p(tmp102_remove),
+	.id_table	= tmp102_id,
+};
+
+static int __init tmp102_init(void)
+{
+	return i2c_add_driver(&tmp102_driver);
+}
+module_init(tmp102_init);
+
+static void __exit tmp102_exit(void)
+{
+	i2c_del_driver(&tmp102_driver);
+}
+module_exit(tmp102_exit);
+
+MODULE_AUTHOR("Steven King <sfking@fdwdc.com>");
+MODULE_DESCRIPTION("Texas Instruments TMP102 temperature sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index d14a1af..ad8d535 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -92,17 +92,6 @@
 #define TMP411_DEVICE_ID			0x12
 
 /*
- * Functions declarations
- */
-
-static int tmp401_probe(struct i2c_client *client,
-			const struct i2c_device_id *id);
-static int tmp401_detect(struct i2c_client *client,
-			 struct i2c_board_info *info);
-static int tmp401_remove(struct i2c_client *client);
-static struct tmp401_data *tmp401_update_device(struct device *dev);
-
-/*
  * Driver data (common to all clients)
  */
 
@@ -113,18 +102,6 @@
 };
 MODULE_DEVICE_TABLE(i2c, tmp401_id);
 
-static struct i2c_driver tmp401_driver = {
-	.class		= I2C_CLASS_HWMON,
-	.driver = {
-		.name	= "tmp401",
-	},
-	.probe		= tmp401_probe,
-	.remove		= tmp401_remove,
-	.id_table	= tmp401_id,
-	.detect		= tmp401_detect,
-	.address_list	= normal_i2c,
-};
-
 /*
  * Client data (each client gets its own)
  */
@@ -194,6 +171,71 @@
 	return (temp + 500) / 1000;
 }
 
+static struct tmp401_data *tmp401_update_device_reg16(
+	struct i2c_client *client, struct tmp401_data *data)
+{
+	int i;
+
+	for (i = 0; i < 2; i++) {
+		/*
+		 * High byte must be read first immediately followed
+		 * by the low byte
+		 */
+		data->temp[i] = i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_MSB[i]) << 8;
+		data->temp[i] |= i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_LSB[i]);
+		data->temp_low[i] = i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8;
+		data->temp_low[i] |= i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_LOW_LIMIT_LSB[i]);
+		data->temp_high[i] = i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8;
+		data->temp_high[i] |= i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_HIGH_LIMIT_LSB[i]);
+		data->temp_crit[i] = i2c_smbus_read_byte_data(client,
+			TMP401_TEMP_CRIT_LIMIT[i]);
+
+		if (data->kind == tmp411) {
+			data->temp_lowest[i] = i2c_smbus_read_byte_data(client,
+				TMP411_TEMP_LOWEST_MSB[i]) << 8;
+			data->temp_lowest[i] |= i2c_smbus_read_byte_data(
+				client, TMP411_TEMP_LOWEST_LSB[i]);
+
+			data->temp_highest[i] = i2c_smbus_read_byte_data(
+				client, TMP411_TEMP_HIGHEST_MSB[i]) << 8;
+			data->temp_highest[i] |= i2c_smbus_read_byte_data(
+				client, TMP411_TEMP_HIGHEST_LSB[i]);
+		}
+	}
+	return data;
+}
+
+static struct tmp401_data *tmp401_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct tmp401_data *data = i2c_get_clientdata(client);
+
+	mutex_lock(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+		data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS);
+		data->config = i2c_smbus_read_byte_data(client,
+						TMP401_CONFIG_READ);
+		tmp401_update_device_reg16(client, data);
+
+		data->temp_crit_hyst = i2c_smbus_read_byte_data(client,
+						TMP401_TEMP_CRIT_HYST);
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	mutex_unlock(&data->update_lock);
+
+	return data;
+}
+
 static ssize_t show_temp_value(struct device *dev,
 	struct device_attribute *devattr, char *buf)
 {
@@ -420,30 +462,36 @@
 }
 
 static struct sensor_device_attribute tmp401_attr[] = {
-	SENSOR_ATTR(temp1_input, 0444, show_temp_value, NULL, 0),
-	SENSOR_ATTR(temp1_min, 0644, show_temp_min, store_temp_min, 0),
-	SENSOR_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 0),
-	SENSOR_ATTR(temp1_crit, 0644, show_temp_crit, store_temp_crit, 0),
-	SENSOR_ATTR(temp1_crit_hyst, 0644, show_temp_crit_hyst,
+	SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_value, NULL, 0),
+	SENSOR_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
+		    store_temp_min, 0),
+	SENSOR_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
+		    store_temp_max, 0),
+	SENSOR_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit,
+		    store_temp_crit, 0),
+	SENSOR_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_crit_hyst,
 		    store_temp_crit_hyst, 0),
-	SENSOR_ATTR(temp1_min_alarm, 0444, show_status, NULL,
+	SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_LOCAL_LOW),
-	SENSOR_ATTR(temp1_max_alarm, 0444, show_status, NULL,
+	SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_LOCAL_HIGH),
-	SENSOR_ATTR(temp1_crit_alarm, 0444, show_status, NULL,
+	SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_LOCAL_CRIT),
-	SENSOR_ATTR(temp2_input, 0444, show_temp_value, NULL, 1),
-	SENSOR_ATTR(temp2_min, 0644, show_temp_min, store_temp_min, 1),
-	SENSOR_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 1),
-	SENSOR_ATTR(temp2_crit, 0644, show_temp_crit, store_temp_crit, 1),
-	SENSOR_ATTR(temp2_crit_hyst, 0444, show_temp_crit_hyst, NULL, 1),
-	SENSOR_ATTR(temp2_fault, 0444, show_status, NULL,
+	SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_value, NULL, 1),
+	SENSOR_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
+		    store_temp_min, 1),
+	SENSOR_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
+		    store_temp_max, 1),
+	SENSOR_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit,
+		    store_temp_crit, 1),
+	SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1),
+	SENSOR_ATTR(temp2_fault, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_REMOTE_OPEN),
-	SENSOR_ATTR(temp2_min_alarm, 0444, show_status, NULL,
+	SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_REMOTE_LOW),
-	SENSOR_ATTR(temp2_max_alarm, 0444, show_status, NULL,
+	SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_REMOTE_HIGH),
-	SENSOR_ATTR(temp2_crit_alarm, 0444, show_status, NULL,
+	SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_status, NULL,
 		    TMP401_STATUS_REMOTE_CRIT),
 };
 
@@ -455,11 +503,11 @@
  * and remote channels.
  */
 static struct sensor_device_attribute tmp411_attr[] = {
-	SENSOR_ATTR(temp1_highest, 0444, show_temp_highest, NULL, 0),
-	SENSOR_ATTR(temp1_lowest, 0444, show_temp_lowest, NULL, 0),
-	SENSOR_ATTR(temp2_highest, 0444, show_temp_highest, NULL, 1),
-	SENSOR_ATTR(temp2_lowest, 0444, show_temp_lowest, NULL, 1),
-	SENSOR_ATTR(temp_reset_history, 0200, NULL, reset_temp_history, 0),
+	SENSOR_ATTR(temp1_highest, S_IRUGO, show_temp_highest, NULL, 0),
+	SENSOR_ATTR(temp1_lowest, S_IRUGO, show_temp_lowest, NULL, 0),
+	SENSOR_ATTR(temp2_highest, S_IRUGO, show_temp_highest, NULL, 1),
+	SENSOR_ATTR(temp2_lowest, S_IRUGO, show_temp_lowest, NULL, 1),
+	SENSOR_ATTR(temp_reset_history, S_IWUSR, NULL, reset_temp_history, 0),
 };
 
 /*
@@ -529,6 +577,27 @@
 	return 0;
 }
 
+static int tmp401_remove(struct i2c_client *client)
+{
+	struct tmp401_data *data = i2c_get_clientdata(client);
+	int i;
+
+	if (data->hwmon_dev)
+		hwmon_device_unregister(data->hwmon_dev);
+
+	for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++)
+		device_remove_file(&client->dev, &tmp401_attr[i].dev_attr);
+
+	if (data->kind == tmp411) {
+		for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++)
+			device_remove_file(&client->dev,
+					   &tmp411_attr[i].dev_attr);
+	}
+
+	kfree(data);
+	return 0;
+}
+
 static int tmp401_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -581,91 +650,17 @@
 	return err;
 }
 
-static int tmp401_remove(struct i2c_client *client)
-{
-	struct tmp401_data *data = i2c_get_clientdata(client);
-	int i;
-
-	if (data->hwmon_dev)
-		hwmon_device_unregister(data->hwmon_dev);
-
-	for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++)
-		device_remove_file(&client->dev, &tmp401_attr[i].dev_attr);
-
-	if (data->kind == tmp411) {
-		for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++)
-			device_remove_file(&client->dev,
-					   &tmp411_attr[i].dev_attr);
-	}
-
-	kfree(data);
-	return 0;
-}
-
-static struct tmp401_data *tmp401_update_device_reg16(
-	struct i2c_client *client, struct tmp401_data *data)
-{
-	int i;
-
-	for (i = 0; i < 2; i++) {
-		/*
-		 * High byte must be read first immediately followed
-		 * by the low byte
-		 */
-		data->temp[i] = i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_MSB[i]) << 8;
-		data->temp[i] |= i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_LSB[i]);
-		data->temp_low[i] = i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8;
-		data->temp_low[i] |= i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_LOW_LIMIT_LSB[i]);
-		data->temp_high[i] = i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8;
-		data->temp_high[i] |= i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_HIGH_LIMIT_LSB[i]);
-		data->temp_crit[i] = i2c_smbus_read_byte_data(client,
-			TMP401_TEMP_CRIT_LIMIT[i]);
-
-		if (data->kind == tmp411) {
-			data->temp_lowest[i] = i2c_smbus_read_byte_data(client,
-				TMP411_TEMP_LOWEST_MSB[i]) << 8;
-			data->temp_lowest[i] |= i2c_smbus_read_byte_data(
-				client, TMP411_TEMP_LOWEST_LSB[i]);
-
-			data->temp_highest[i] = i2c_smbus_read_byte_data(
-				client, TMP411_TEMP_HIGHEST_MSB[i]) << 8;
-			data->temp_highest[i] |= i2c_smbus_read_byte_data(
-				client, TMP411_TEMP_HIGHEST_LSB[i]);
-		}
-	}
-	return data;
-}
-
-static struct tmp401_data *tmp401_update_device(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct tmp401_data *data = i2c_get_clientdata(client);
-
-	mutex_lock(&data->update_lock);
-
-	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
-		data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS);
-		data->config = i2c_smbus_read_byte_data(client,
-						TMP401_CONFIG_READ);
-		tmp401_update_device_reg16(client, data);
-
-		data->temp_crit_hyst = i2c_smbus_read_byte_data(client,
-						TMP401_TEMP_CRIT_HYST);
-
-		data->last_updated = jiffies;
-		data->valid = 1;
-	}
-
-	mutex_unlock(&data->update_lock);
-
-	return data;
-}
+static struct i2c_driver tmp401_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "tmp401",
+	},
+	.probe		= tmp401_probe,
+	.remove		= tmp401_remove,
+	.id_table	= tmp401_id,
+	.detect		= tmp401_detect,
+	.address_list	= normal_i2c,
+};
 
 static int __init tmp401_init(void)
 {
diff --git a/drivers/ide/gayle.c b/drivers/ide/gayle.c
index b9e517d..3feaa26 100644
--- a/drivers/ide/gayle.c
+++ b/drivers/ide/gayle.c
@@ -16,6 +16,7 @@
 #include <linux/init.h>
 #include <linux/zorro.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
 
 #include <asm/setup.h>
 #include <asm/amigahw.h>
@@ -24,15 +25,6 @@
 
 
     /*
-     *  Bases of the IDE interfaces
-     */
-
-#define GAYLE_BASE_4000	0xdd2020	/* A4000/A4000T */
-#define GAYLE_BASE_1200	0xda0000	/* A1200/A600 and E-Matrix 530 */
-
-#define GAYLE_IDEREG_SIZE	0x2000
-
-    /*
      *  Offsets from one of the above bases
      */
 
@@ -68,20 +60,20 @@
 
 static int gayle_test_irq(ide_hwif_t *hwif)
 {
-    unsigned char ch;
+	unsigned char ch;
 
-    ch = z_readb(hwif->io_ports.irq_addr);
-    if (!(ch & GAYLE_IRQ_IDE))
-	return 0;
-    return 1;
+	ch = z_readb(hwif->io_ports.irq_addr);
+	if (!(ch & GAYLE_IRQ_IDE))
+		return 0;
+	return 1;
 }
 
 static void gayle_a1200_clear_irq(ide_drive_t *drive)
 {
-    ide_hwif_t *hwif = drive->hwif;
+	ide_hwif_t *hwif = drive->hwif;
 
-    (void)z_readb(hwif->io_ports.status_addr);
-    z_writeb(0x7c, hwif->io_ports.irq_addr);
+	(void)z_readb(hwif->io_ports.status_addr);
+	z_writeb(0x7c, hwif->io_ports.irq_addr);
 }
 
 static void __init gayle_setup_ports(struct ide_hw *hw, unsigned long base,
@@ -122,64 +114,89 @@
      *  Probe for a Gayle IDE interface (and optionally for an IDE doubler)
      */
 
-static int __init gayle_init(void)
+static int __init amiga_gayle_ide_probe(struct platform_device *pdev)
 {
-    unsigned long phys_base, res_start, res_n;
-    unsigned long base, ctrlport, irqport;
-    int a4000, i, rc;
-    struct ide_hw hw[GAYLE_NUM_HWIFS], *hws[GAYLE_NUM_HWIFS];
-    struct ide_port_info d = gayle_port_info;
+	struct resource *res;
+	struct gayle_ide_platform_data *pdata;
+	unsigned long base, ctrlport, irqport;
+	unsigned int i;
+	int error;
+	struct ide_hw hw[GAYLE_NUM_HWIFS], *hws[GAYLE_NUM_HWIFS];
+	struct ide_port_info d = gayle_port_info;
+	struct ide_host *host;
 
-    if (!MACH_IS_AMIGA)
-	return -ENODEV;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
 
-    if ((a4000 = AMIGAHW_PRESENT(A4000_IDE)) || AMIGAHW_PRESENT(A1200_IDE))
-	goto found;
-
-#ifdef CONFIG_ZORRO
-    if (zorro_find_device(ZORRO_PROD_MTEC_VIPER_MK_V_E_MATRIX_530_SCSI_IDE,
-			  NULL))
-	goto found;
-#endif
-    return -ENODEV;
-
-found:
-	printk(KERN_INFO "ide: Gayle IDE controller (A%d style%s)\n",
-			 a4000 ? 4000 : 1200,
-			 ide_doubler ? ", IDE doubler" : "");
-
-	if (a4000) {
-	    phys_base = GAYLE_BASE_4000;
-	    irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_4000);
-	    d.port_ops = &gayle_a4000_port_ops;
-	} else {
-	    phys_base = GAYLE_BASE_1200;
-	    irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_1200);
-	    d.port_ops = &gayle_a1200_port_ops;
-	}
-
-	res_start = ((unsigned long)phys_base) & ~(GAYLE_NEXT_PORT-1);
-	res_n = GAYLE_IDEREG_SIZE;
-
-	if (!request_mem_region(res_start, res_n, "IDE"))
+	if (!request_mem_region(res->start, resource_size(res), "IDE"))
 		return -EBUSY;
 
-    for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) {
-	base = (unsigned long)ZTWO_VADDR(phys_base + i * GAYLE_NEXT_PORT);
-	ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0;
+	pdata = pdev->dev.platform_data;
+	pr_info("ide: Gayle IDE controller (A%u style%s)\n",
+		pdata->explicit_ack ? 1200 : 4000,
+		ide_doubler ? ", IDE doubler" : "");
 
-	gayle_setup_ports(&hw[i], base, ctrlport, irqport);
+	base = (unsigned long)ZTWO_VADDR(pdata->base);
+	ctrlport = 0;
+	irqport = (unsigned long)ZTWO_VADDR(pdata->irqport);
+	if (pdata->explicit_ack)
+		d.port_ops = &gayle_a1200_port_ops;
+	else
+		d.port_ops = &gayle_a4000_port_ops;
 
-	hws[i] = &hw[i];
-    }
+	for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++, base += GAYLE_NEXT_PORT) {
+		if (GAYLE_HAS_CONTROL_REG)
+			ctrlport = base + GAYLE_CONTROL;
 
-    rc = ide_host_add(&d, hws, i, NULL);
-    if (rc)
-	release_mem_region(res_start, res_n);
+		gayle_setup_ports(&hw[i], base, ctrlport, irqport);
+		hws[i] = &hw[i];
+	}
 
-    return rc;
+	error = ide_host_add(&d, hws, i, &host);
+	if (error)
+		goto out;
+
+	platform_set_drvdata(pdev, host);
+	return 0;
+
+out:
+	release_mem_region(res->start, resource_size(res));
+	return error;
 }
 
-module_init(gayle_init);
+static int __exit amiga_gayle_ide_remove(struct platform_device *pdev)
+{
+	struct ide_host *host = platform_get_drvdata(pdev);
+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	ide_host_remove(host);
+	release_mem_region(res->start, resource_size(res));
+	return 0;
+}
+
+static struct platform_driver amiga_gayle_ide_driver = {
+	.remove = __exit_p(amiga_gayle_ide_remove),
+	.driver   = {
+		.name	= "amiga-gayle-ide",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amiga_gayle_ide_init(void)
+{
+	return platform_driver_probe(&amiga_gayle_ide_driver,
+				     amiga_gayle_ide_probe);
+}
+
+module_init(amiga_gayle_ide_init);
+
+static void __exit amiga_gayle_ide_exit(void)
+{
+	platform_driver_unregister(&amiga_gayle_ide_driver);
+}
+
+module_exit(amiga_gayle_ide_exit);
 
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-gayle-ide");
diff --git a/drivers/idle/Kconfig b/drivers/idle/Kconfig
index f15e90a..fb5c518 100644
--- a/drivers/idle/Kconfig
+++ b/drivers/idle/Kconfig
@@ -1,3 +1,14 @@
+config INTEL_IDLE
+	tristate "Cpuidle Driver for Intel Processors"
+	depends on CPU_IDLE
+	depends on X86
+	depends on CPU_SUP_INTEL
+	depends on EXPERIMENTAL
+	help
+	  Enable intel_idle, a cpuidle driver that includes knowledge of
+	  native Intel hardware idle features.  The acpi_idle driver
+	  can be configured at the same time, in order to handle
+	  processors intel_idle does not support.
 
 menu "Memory power savings"
 depends on X86_64
diff --git a/drivers/idle/Makefile b/drivers/idle/Makefile
index 5f68fc3..23d295c 100644
--- a/drivers/idle/Makefile
+++ b/drivers/idle/Makefile
@@ -1,2 +1,3 @@
 obj-$(CONFIG_I7300_IDLE)			+= i7300_idle.o
+obj-$(CONFIG_INTEL_IDLE)			+= intel_idle.o
 
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
new file mode 100755
index 0000000..54f0fb4
--- /dev/null
+++ b/drivers/idle/intel_idle.c
@@ -0,0 +1,461 @@
+/*
+ * intel_idle.c - native hardware idle loop for modern Intel processors
+ *
+ * Copyright (c) 2010, Intel Corporation.
+ * Len Brown <len.brown@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/*
+ * intel_idle is a cpuidle driver that loads on specific Intel processors
+ * in lieu of the legacy ACPI processor_idle driver.  The intent is to
+ * make Linux more efficient on these processors, as intel_idle knows
+ * more than ACPI, as well as make Linux more immune to ACPI BIOS bugs.
+ */
+
+/*
+ * Design Assumptions
+ *
+ * All CPUs have same idle states as boot CPU
+ *
+ * Chipset BM_STS (bus master status) bit is a NOP
+ *	for preventing entry into deep C-stats
+ */
+
+/*
+ * Known limitations
+ *
+ * The driver currently initializes for_each_online_cpu() upon modprobe.
+ * It it unaware of subsequent processors hot-added to the system.
+ * This means that if you boot with maxcpus=n and later online
+ * processors above n, those processors will use C1 only.
+ *
+ * ACPI has a .suspend hack to turn off deep c-statees during suspend
+ * to avoid complications with the lapic timer workaround.
+ * Have not seen issues with suspend, but may need same workaround here.
+ *
+ * There is currently no kernel-based automatic probing/loading mechanism
+ * if the driver is built as a module.
+ */
+
+/* un-comment DEBUG to enable pr_debug() statements */
+#define DEBUG
+
+#include <linux/kernel.h>
+#include <linux/cpuidle.h>
+#include <linux/clockchips.h>
+#include <linux/hrtimer.h>	/* ktime_get_real() */
+#include <trace/events/power.h>
+#include <linux/sched.h>
+
+#define INTEL_IDLE_VERSION "0.4"
+#define PREFIX "intel_idle: "
+
+#define MWAIT_SUBSTATE_MASK	(0xf)
+#define MWAIT_CSTATE_MASK	(0xf)
+#define MWAIT_SUBSTATE_SIZE	(4)
+#define MWAIT_MAX_NUM_CSTATES	8
+#define CPUID_MWAIT_LEAF (5)
+#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1)
+#define CPUID5_ECX_INTERRUPT_BREAK	(0x2)
+
+static struct cpuidle_driver intel_idle_driver = {
+	.name = "intel_idle",
+	.owner = THIS_MODULE,
+};
+/* intel_idle.max_cstate=0 disables driver */
+static int max_cstate = MWAIT_MAX_NUM_CSTATES - 1;
+static int power_policy = 7; /* 0 = max perf; 15 = max powersave */
+
+static unsigned int substates;
+static int (*choose_substate)(int);
+
+/* Reliable LAPIC Timer States, bit 1 for C1 etc.  */
+static unsigned int lapic_timer_reliable_states;
+
+static struct cpuidle_device *intel_idle_cpuidle_devices;
+static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state);
+
+static struct cpuidle_state *cpuidle_state_table;
+
+/*
+ * States are indexed by the cstate number,
+ * which is also the index into the MWAIT hint array.
+ * Thus C0 is a dummy.
+ */
+static struct cpuidle_state nehalem_cstates[MWAIT_MAX_NUM_CSTATES] = {
+	{ /* MWAIT C0 */ },
+	{ /* MWAIT C1 */
+		.name = "NHM-C1",
+		.desc = "MWAIT 0x00",
+		.driver_data = (void *) 0x00,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 3,
+		.power_usage = 1000,
+		.target_residency = 6,
+		.enter = &intel_idle },
+	{ /* MWAIT C2 */
+		.name = "NHM-C3",
+		.desc = "MWAIT 0x10",
+		.driver_data = (void *) 0x10,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 20,
+		.power_usage = 500,
+		.target_residency = 80,
+		.enter = &intel_idle },
+	{ /* MWAIT C3 */
+		.name = "NHM-C6",
+		.desc = "MWAIT 0x20",
+		.driver_data = (void *) 0x20,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 200,
+		.power_usage = 350,
+		.target_residency = 800,
+		.enter = &intel_idle },
+};
+
+static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
+	{ /* MWAIT C0 */ },
+	{ /* MWAIT C1 */
+		.name = "ATM-C1",
+		.desc = "MWAIT 0x00",
+		.driver_data = (void *) 0x00,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 1,
+		.power_usage = 1000,
+		.target_residency = 4,
+		.enter = &intel_idle },
+	{ /* MWAIT C2 */
+		.name = "ATM-C2",
+		.desc = "MWAIT 0x10",
+		.driver_data = (void *) 0x10,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 20,
+		.power_usage = 500,
+		.target_residency = 80,
+		.enter = &intel_idle },
+	{ /* MWAIT C3 */ },
+	{ /* MWAIT C4 */
+		.name = "ATM-C4",
+		.desc = "MWAIT 0x30",
+		.driver_data = (void *) 0x30,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 100,
+		.power_usage = 250,
+		.target_residency = 400,
+		.enter = &intel_idle },
+	{ /* MWAIT C5 */ },
+	{ /* MWAIT C6 */
+		.name = "ATM-C6",
+		.desc = "MWAIT 0x40",
+		.driver_data = (void *) 0x40,
+		.flags = CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 200,
+		.power_usage = 150,
+		.target_residency = 800,
+		.enter = NULL },	/* disabled */
+};
+
+/*
+ * choose_tunable_substate()
+ *
+ * Run-time decision on which C-state substate to invoke
+ * If power_policy = 0, choose shallowest substate (0)
+ * If power_policy = 15, choose deepest substate
+ * If power_policy = middle, choose middle substate etc.
+ */
+static int choose_tunable_substate(int cstate)
+{
+	unsigned int num_substates;
+	unsigned int substate_choice;
+
+	power_policy &= 0xF;	/* valid range: 0-15 */
+	cstate &= 7;	/* valid range: 0-7 */
+
+	num_substates = (substates >> ((cstate) * 4)) & MWAIT_SUBSTATE_MASK;
+
+	if (num_substates <= 1)
+		return 0;
+
+	substate_choice = ((power_policy + (power_policy + 1) *
+				(num_substates - 1)) / 16);
+
+	return substate_choice;
+}
+
+/*
+ * choose_zero_substate()
+ */
+static int choose_zero_substate(int cstate)
+{
+	return 0;
+}
+
+/**
+ * intel_idle
+ * @dev: cpuidle_device
+ * @state: cpuidle state
+ *
+ */
+static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state)
+{
+	unsigned long ecx = 1; /* break on interrupt flag */
+	unsigned long eax = (unsigned long)cpuidle_get_statedata(state);
+	unsigned int cstate;
+	ktime_t kt_before, kt_after;
+	s64 usec_delta;
+	int cpu = smp_processor_id();
+
+	cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) & MWAIT_CSTATE_MASK) + 1;
+
+	eax = eax + (choose_substate)(cstate);
+
+	local_irq_disable();
+
+	if (!(lapic_timer_reliable_states & (1 << (cstate))))
+		clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu);
+
+	kt_before = ktime_get_real();
+
+	stop_critical_timings();
+#ifndef MODULE
+	trace_power_start(POWER_CSTATE, (eax >> 4) + 1);
+#endif
+	if (!need_resched()) {
+
+		__monitor((void *)&current_thread_info()->flags, 0, 0);
+		smp_mb();
+		if (!need_resched())
+			__mwait(eax, ecx);
+	}
+
+	start_critical_timings();
+
+	kt_after = ktime_get_real();
+	usec_delta = ktime_to_us(ktime_sub(kt_after, kt_before));
+
+	local_irq_enable();
+
+	if (!(lapic_timer_reliable_states & (1 << (cstate))))
+		clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu);
+
+	return usec_delta;
+}
+
+/*
+ * intel_idle_probe()
+ */
+static int intel_idle_probe(void)
+{
+	unsigned int eax, ebx, ecx, edx;
+
+	if (max_cstate == 0) {
+		pr_debug(PREFIX "disabled\n");
+		return -EPERM;
+	}
+
+	if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
+		return -ENODEV;
+
+	if (!boot_cpu_has(X86_FEATURE_MWAIT))
+		return -ENODEV;
+
+	if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF)
+		return -ENODEV;
+
+	cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx);
+
+	if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
+		!(ecx & CPUID5_ECX_INTERRUPT_BREAK))
+			return -ENODEV;
+#ifdef DEBUG
+	if (substates == 0)	/* can over-ride via modparam */
+#endif
+		substates = edx;
+
+	pr_debug(PREFIX "MWAIT substates: 0x%x\n", substates);
+
+	if (boot_cpu_has(X86_FEATURE_ARAT))	/* Always Reliable APIC Timer */
+		lapic_timer_reliable_states = 0xFFFFFFFF;
+
+	if (boot_cpu_data.x86 != 6)	/* family 6 */
+		return -ENODEV;
+
+	switch (boot_cpu_data.x86_model) {
+
+	case 0x1A:	/* Core i7, Xeon 5500 series */
+	case 0x1E:	/* Core i7 and i5 Processor - Lynnfield Jasper Forest */
+	case 0x1F:	/* Core i7 and i5 Processor - Nehalem */
+	case 0x2E:	/* Nehalem-EX Xeon */
+		lapic_timer_reliable_states = (1 << 1);	 /* C1 */
+
+	case 0x25:	/* Westmere */
+	case 0x2C:	/* Westmere */
+		cpuidle_state_table = nehalem_cstates;
+		choose_substate = choose_tunable_substate;
+		break;
+
+	case 0x1C:	/* 28 - Atom Processor */
+		lapic_timer_reliable_states = (1 << 2) | (1 << 1); /* C2, C1 */
+		cpuidle_state_table = atom_cstates;
+		choose_substate = choose_zero_substate;
+		break;
+#ifdef FUTURE_USE
+	case 0x17:	/* 23 - Core 2 Duo */
+		lapic_timer_reliable_states = (1 << 2) | (1 << 1); /* C2, C1 */
+#endif
+
+	default:
+		pr_debug(PREFIX "does not run on family %d model %d\n",
+			boot_cpu_data.x86, boot_cpu_data.x86_model);
+		return -ENODEV;
+	}
+
+	pr_debug(PREFIX "v" INTEL_IDLE_VERSION
+		" model 0x%X\n", boot_cpu_data.x86_model);
+
+	pr_debug(PREFIX "lapic_timer_reliable_states 0x%x\n",
+		lapic_timer_reliable_states);
+	return 0;
+}
+
+/*
+ * intel_idle_cpuidle_devices_uninit()
+ * unregister, free cpuidle_devices
+ */
+static void intel_idle_cpuidle_devices_uninit(void)
+{
+	int i;
+	struct cpuidle_device *dev;
+
+	for_each_online_cpu(i) {
+		dev = per_cpu_ptr(intel_idle_cpuidle_devices, i);
+		cpuidle_unregister_device(dev);
+	}
+
+	free_percpu(intel_idle_cpuidle_devices);
+	return;
+}
+/*
+ * intel_idle_cpuidle_devices_init()
+ * allocate, initialize, register cpuidle_devices
+ */
+static int intel_idle_cpuidle_devices_init(void)
+{
+	int i, cstate;
+	struct cpuidle_device *dev;
+
+	intel_idle_cpuidle_devices = alloc_percpu(struct cpuidle_device);
+	if (intel_idle_cpuidle_devices == NULL)
+		return -ENOMEM;
+
+	for_each_online_cpu(i) {
+		dev = per_cpu_ptr(intel_idle_cpuidle_devices, i);
+
+		dev->state_count = 1;
+
+		for (cstate = 1; cstate < MWAIT_MAX_NUM_CSTATES; ++cstate) {
+			int num_substates;
+
+			if (cstate > max_cstate) {
+				printk(PREFIX "max_cstate %d reached\n",
+					max_cstate);
+				break;
+			}
+
+			/* does the state exist in CPUID.MWAIT? */
+			num_substates = (substates >> ((cstate) * 4))
+						& MWAIT_SUBSTATE_MASK;
+			if (num_substates == 0)
+				continue;
+			/* is the state not enabled? */
+			if (cpuidle_state_table[cstate].enter == NULL) {
+				/* does the driver not know about the state? */
+				if (*cpuidle_state_table[cstate].name == '\0')
+					pr_debug(PREFIX "unaware of model 0x%x"
+						" MWAIT %d please"
+						" contact lenb@kernel.org",
+					boot_cpu_data.x86_model, cstate);
+				continue;
+			}
+
+			if ((cstate > 2) &&
+				!boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
+				mark_tsc_unstable("TSC halts in idle"
+					" states deeper than C2");
+
+			dev->states[dev->state_count] =	/* structure copy */
+				cpuidle_state_table[cstate];
+
+			dev->state_count += 1;
+		}
+
+		dev->cpu = i;
+		if (cpuidle_register_device(dev)) {
+			pr_debug(PREFIX "cpuidle_register_device %d failed!\n",
+				 i);
+			intel_idle_cpuidle_devices_uninit();
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
+
+static int __init intel_idle_init(void)
+{
+	int retval;
+
+	retval = intel_idle_probe();
+	if (retval)
+		return retval;
+
+	retval = cpuidle_register_driver(&intel_idle_driver);
+	if (retval) {
+		printk(KERN_DEBUG PREFIX "intel_idle yielding to %s",
+			cpuidle_get_driver()->name);
+		return retval;
+	}
+
+	retval = intel_idle_cpuidle_devices_init();
+	if (retval) {
+		cpuidle_unregister_driver(&intel_idle_driver);
+		return retval;
+	}
+
+	return 0;
+}
+
+static void __exit intel_idle_exit(void)
+{
+	intel_idle_cpuidle_devices_uninit();
+	cpuidle_unregister_driver(&intel_idle_driver);
+
+	return;
+}
+
+module_init(intel_idle_init);
+module_exit(intel_idle_exit);
+
+module_param(power_policy, int, 0644);
+module_param(max_cstate, int, 0444);
+#ifdef DEBUG
+module_param(substates, int, 0444);
+#endif
+
+MODULE_AUTHOR("Len Brown <len.brown@intel.com>");
+MODULE_DESCRIPTION("Cpuidle driver for Intel Hardware v" INTEL_IDLE_VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c
index 9fd4a0d..adaefab 100644
--- a/drivers/ieee1394/dv1394.c
+++ b/drivers/ieee1394/dv1394.c
@@ -1824,7 +1824,7 @@
 	       "and will not be available in the new firewire driver stack. "
 	       "Try libraw1394 based programs instead.\n", current->comm);
 
-	return 0;
+	return nonseekable_open(inode, file);
 }
 
 
@@ -2153,17 +2153,18 @@
 static const struct file_operations dv1394_fops=
 {
 	.owner =	THIS_MODULE,
-	.poll =         dv1394_poll,
+	.poll =		dv1394_poll,
 	.unlocked_ioctl = dv1394_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl = dv1394_compat_ioctl,
 #endif
 	.mmap =		dv1394_mmap,
 	.open =		dv1394_open,
-	.write =        dv1394_write,
-	.read =         dv1394_read,
+	.write =	dv1394_write,
+	.read =		dv1394_read,
 	.release =	dv1394_release,
-	.fasync =       dv1394_fasync,
+	.fasync =	dv1394_fasync,
+	.llseek =	no_llseek,
 };
 
 
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index 8aa56ac..b563d5e 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -2834,7 +2834,7 @@
 
 	file->private_data = fi;
 
-	return 0;
+	return nonseekable_open(inode, file);
 }
 
 static int raw1394_release(struct inode *inode, struct file *file)
@@ -3035,6 +3035,7 @@
 	.poll = raw1394_poll,
 	.open = raw1394_open,
 	.release = raw1394_release,
+	.llseek = no_llseek,
 };
 
 static int __init init_raw1394(void)
diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index 949064a..a42bd68 100644
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -1239,7 +1239,7 @@
 	ctx->current_ctx = NULL;
 	file->private_data = ctx;
 
-	return 0;
+	return nonseekable_open(inode, file);
 }
 
 static int video1394_release(struct inode *inode, struct file *file)
@@ -1287,7 +1287,8 @@
 	.poll =		video1394_poll,
 	.mmap =		video1394_mmap,
 	.open =		video1394_open,
-	.release =	video1394_release
+	.release =	video1394_release,
+	.llseek =	no_llseek,
 };
 
 /*** HOTPLUG STUFF **********************************************************/
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 07cae55..e571e60 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -847,7 +847,7 @@
 		ehca_gen_dbg("CPU: %x (CPU_PREPARE)", cpu);
 		if (!create_comp_task(pool, cpu)) {
 			ehca_gen_err("Can't create comp_task for cpu: %x", cpu);
-			return NOTIFY_BAD;
+			return notifier_from_errno(-ENOMEM);
 		}
 		break;
 	case CPU_UP_CANCELED:
diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index 423e0e6..34157bb 100644
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -47,15 +47,15 @@
 	struct mutex mutex;
 	struct device dev;
 
-	struct js_corr corr[ABS_MAX + 1];
+	struct js_corr corr[ABS_CNT];
 	struct JS_DATA_SAVE_TYPE glue;
 	int nabs;
 	int nkey;
 	__u16 keymap[KEY_MAX - BTN_MISC + 1];
 	__u16 keypam[KEY_MAX - BTN_MISC + 1];
-	__u8 absmap[ABS_MAX + 1];
-	__u8 abspam[ABS_MAX + 1];
-	__s16 abs[ABS_MAX + 1];
+	__u8 absmap[ABS_CNT];
+	__u8 abspam[ABS_CNT];
+	__s16 abs[ABS_CNT];
 };
 
 struct joydev_client {
@@ -826,7 +826,7 @@
 	joydev->handle.handler = handler;
 	joydev->handle.private = joydev;
 
-	for (i = 0; i < ABS_MAX + 1; i++)
+	for (i = 0; i < ABS_CNT; i++)
 		if (test_bit(i, dev->absbit)) {
 			joydev->absmap[i] = joydev->nabs;
 			joydev->abspam[joydev->nabs] = i;
diff --git a/drivers/input/keyboard/amikbd.c b/drivers/input/keyboard/amikbd.c
index 35149ec..79172af 100644
--- a/drivers/input/keyboard/amikbd.c
+++ b/drivers/input/keyboard/amikbd.c
@@ -35,6 +35,7 @@
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/keyboard.h>
+#include <linux/platform_device.h>
 
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
@@ -154,10 +155,9 @@
 	[7] = KERN_WARNING "amikbd: keyboard interrupt\n"
 };
 
-static struct input_dev *amikbd_dev;
-
-static irqreturn_t amikbd_interrupt(int irq, void *dummy)
+static irqreturn_t amikbd_interrupt(int irq, void *data)
 {
+	struct input_dev *dev = data;
 	unsigned char scancode, down;
 
 	scancode = ~ciaa.sdr;		/* get and invert scancode (keyboard is active low) */
@@ -170,47 +170,42 @@
 
 	if (scancode < 0x78) {		/* scancodes < 0x78 are keys */
 		if (scancode == 98) {	/* CapsLock is a toggle switch key on Amiga */
-			input_report_key(amikbd_dev, scancode, 1);
-			input_report_key(amikbd_dev, scancode, 0);
+			input_report_key(dev, scancode, 1);
+			input_report_key(dev, scancode, 0);
 		} else {
-			input_report_key(amikbd_dev, scancode, down);
+			input_report_key(dev, scancode, down);
 		}
 
-		input_sync(amikbd_dev);
+		input_sync(dev);
 	} else				/* scancodes >= 0x78 are error codes */
 		printk(amikbd_messages[scancode - 0x78]);
 
 	return IRQ_HANDLED;
 }
 
-static int __init amikbd_init(void)
+static int __init amikbd_probe(struct platform_device *pdev)
 {
+	struct input_dev *dev;
 	int i, j, err;
 
-	if (!AMIGAHW_PRESENT(AMI_KEYBOARD))
-		return -ENODEV;
-
-	if (!request_mem_region(CIAA_PHYSADDR-1+0xb00, 0x100, "amikeyb"))
-		return -EBUSY;
-
-	amikbd_dev = input_allocate_device();
-	if (!amikbd_dev) {
-		printk(KERN_ERR "amikbd: not enough memory for input device\n");
-		err = -ENOMEM;
-		goto fail1;
+	dev = input_allocate_device();
+	if (!dev) {
+		dev_err(&pdev->dev, "Not enough memory for input device\n");
+		return -ENOMEM;
 	}
 
-	amikbd_dev->name = "Amiga Keyboard";
-	amikbd_dev->phys = "amikbd/input0";
-	amikbd_dev->id.bustype = BUS_AMIGA;
-	amikbd_dev->id.vendor = 0x0001;
-	amikbd_dev->id.product = 0x0001;
-	amikbd_dev->id.version = 0x0100;
+	dev->name = pdev->name;
+	dev->phys = "amikbd/input0";
+	dev->id.bustype = BUS_AMIGA;
+	dev->id.vendor = 0x0001;
+	dev->id.product = 0x0001;
+	dev->id.version = 0x0100;
+	dev->dev.parent = &pdev->dev;
 
-	amikbd_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
+	dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
 
 	for (i = 0; i < 0x78; i++)
-		set_bit(i, amikbd_dev->keybit);
+		set_bit(i, dev->keybit);
 
 	for (i = 0; i < MAX_NR_KEYMAPS; i++) {
 		static u_short temp_map[NR_KEYS] __initdata;
@@ -229,30 +224,54 @@
 		memcpy(key_maps[i], temp_map, sizeof(temp_map));
 	}
 	ciaa.cra &= ~0x41;	 /* serial data in, turn off TA */
-	if (request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd",
-			amikbd_interrupt)) {
-		err = -EBUSY;
+	err = request_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt, 0, "amikbd",
+			  dev);
+	if (err)
 		goto fail2;
-	}
 
-	err = input_register_device(amikbd_dev);
+	err = input_register_device(dev);
 	if (err)
 		goto fail3;
 
+	platform_set_drvdata(pdev, dev);
+
 	return 0;
 
- fail3:	free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt);
- fail2:	input_free_device(amikbd_dev);
- fail1:	release_mem_region(CIAA_PHYSADDR - 1 + 0xb00, 0x100);
+ fail3:	free_irq(IRQ_AMIGA_CIAA_SP, dev);
+ fail2:	input_free_device(dev);
 	return err;
 }
 
-static void __exit amikbd_exit(void)
+static int __exit amikbd_remove(struct platform_device *pdev)
 {
-	free_irq(IRQ_AMIGA_CIAA_SP, amikbd_interrupt);
-	input_unregister_device(amikbd_dev);
-	release_mem_region(CIAA_PHYSADDR - 1 + 0xb00, 0x100);
+	struct input_dev *dev = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	free_irq(IRQ_AMIGA_CIAA_SP, dev);
+	input_unregister_device(dev);
+	return 0;
+}
+
+static struct platform_driver amikbd_driver = {
+	.remove = __exit_p(amikbd_remove),
+	.driver   = {
+		.name	= "amiga-keyboard",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amikbd_init(void)
+{
+	return platform_driver_probe(&amikbd_driver, amikbd_probe);
 }
 
 module_init(amikbd_init);
+
+static void __exit amikbd_exit(void)
+{
+	platform_driver_unregister(&amikbd_driver);
+}
+
 module_exit(amikbd_exit);
+
+MODULE_ALIAS("platform:amiga-keyboard");
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 48cdabe..c44b9ea 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -80,6 +80,16 @@
 	tristate "M68k Beeper support"
 	depends on M68K
 
+config INPUT_MAX8925_ONKEY
+	tristate "MAX8925 ONKEY support"
+	depends on MFD_MAX8925
+	help
+	  Support the ONKEY of MAX8925 PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called max8925_onkey.
+
 config INPUT_APANEL
 	tristate "Fujitsu Lifebook Application Panel buttons"
 	depends on X86 && I2C && LEDS_CLASS
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index f9f5770..71fe57d 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -20,6 +20,7 @@
 obj-$(CONFIG_INPUT_IXP4XX_BEEPER)	+= ixp4xx-beeper.o
 obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o
 obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o
+obj-$(CONFIG_INPUT_MAX8925_ONKEY)	+= max8925_onkey.o
 obj-$(CONFIG_INPUT_PCAP)		+= pcap_keys.o
 obj-$(CONFIG_INPUT_PCF50633_PMU)	+= pcf50633-input.o
 obj-$(CONFIG_INPUT_PCF8574)		+= pcf8574_keypad.o
diff --git a/drivers/input/misc/max8925_onkey.c b/drivers/input/misc/max8925_onkey.c
new file mode 100644
index 0000000..80af446
--- /dev/null
+++ b/drivers/input/misc/max8925_onkey.c
@@ -0,0 +1,148 @@
+/**
+ * max8925_onkey.c - MAX8925 ONKEY driver
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *      Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/max8925.h>
+#include <linux/slab.h>
+
+#define HARDRESET_EN		(1 << 7)
+#define PWREN_EN		(1 << 7)
+
+struct max8925_onkey_info {
+	struct input_dev	*idev;
+	struct i2c_client	*i2c;
+	int			irq;
+};
+
+/*
+ * MAX8925 gives us an interrupt when ONKEY is held for 3 seconds.
+ * max8925_set_bits() operates I2C bus and may sleep. So implement
+ * it in thread IRQ handler.
+ */
+static irqreturn_t max8925_onkey_handler(int irq, void *data)
+{
+	struct max8925_onkey_info *info = data;
+
+	input_report_key(info->idev, KEY_POWER, 1);
+	input_sync(info->idev);
+
+	/* Enable hardreset to halt if system isn't shutdown on time */
+	max8925_set_bits(info->i2c, MAX8925_SYSENSEL,
+			 HARDRESET_EN, HARDRESET_EN);
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit max8925_onkey_probe(struct platform_device *pdev)
+{
+	struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
+	struct max8925_onkey_info *info;
+	int error;
+
+	info = kzalloc(sizeof(struct max8925_onkey_info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->i2c = chip->i2c;
+	info->irq = chip->irq_base + MAX8925_IRQ_GPM_SW_3SEC;
+
+	info->idev = input_allocate_device();
+	if (!info->idev) {
+		dev_err(chip->dev, "Failed to allocate input dev\n");
+		error = -ENOMEM;
+		goto out_input;
+	}
+
+	info->idev->name = "max8925_on";
+	info->idev->phys = "max8925_on/input0";
+	info->idev->id.bustype = BUS_I2C;
+	info->idev->dev.parent = &pdev->dev;
+	info->idev->evbit[0] = BIT_MASK(EV_KEY);
+	info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+
+	error = request_threaded_irq(info->irq, NULL, max8925_onkey_handler,
+				     IRQF_ONESHOT, "onkey", info);
+	if (error < 0) {
+		dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
+			info->irq, error);
+		goto out_irq;
+	}
+
+	error = input_register_device(info->idev);
+	if (error) {
+		dev_err(chip->dev, "Can't register input device: %d\n", error);
+		goto out;
+	}
+
+	platform_set_drvdata(pdev, info);
+
+	return 0;
+
+out:
+	free_irq(info->irq, info);
+out_irq:
+	input_free_device(info->idev);
+out_input:
+	kfree(info);
+	return error;
+}
+
+static int __devexit max8925_onkey_remove(struct platform_device *pdev)
+{
+	struct max8925_onkey_info *info = platform_get_drvdata(pdev);
+
+	free_irq(info->irq, info);
+	input_unregister_device(info->idev);
+	kfree(info);
+
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver max8925_onkey_driver = {
+	.driver		= {
+		.name	= "max8925-onkey",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= max8925_onkey_probe,
+	.remove		= __devexit_p(max8925_onkey_remove),
+};
+
+static int __init max8925_onkey_init(void)
+{
+	return platform_driver_register(&max8925_onkey_driver);
+}
+module_init(max8925_onkey_init);
+
+static void __exit max8925_onkey_exit(void)
+{
+	platform_driver_unregister(&max8925_onkey_driver);
+}
+module_exit(max8925_onkey_exit);
+
+MODULE_DESCRIPTION("Maxim MAX8925 ONKEY driver");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/twl4030-vibra.c b/drivers/input/misc/twl4030-vibra.c
index fee9eac..4f9b2af 100644
--- a/drivers/input/misc/twl4030-vibra.c
+++ b/drivers/input/misc/twl4030-vibra.c
@@ -90,8 +90,8 @@
 	twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
 			 (reg & ~TWL4030_VIBRA_EN), TWL4030_REG_VIBRA_CTL);
 
-	twl4030_codec_disable_resource(TWL4030_CODEC_RES_POWER);
 	twl4030_codec_disable_resource(TWL4030_CODEC_RES_APLL);
+	twl4030_codec_disable_resource(TWL4030_CODEC_RES_POWER);
 
 	info->enabled = false;
 }
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 1477466..b71eb55 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -300,7 +300,7 @@
 	unsigned int cnt;
 	int retval = 0;
 
-	for (cnt = 0; cnt < ABS_MAX + 1; cnt++) {
+	for (cnt = 0; cnt < ABS_CNT; cnt++) {
 		if (!test_bit(cnt, dev->absbit))
 			continue;
 
@@ -387,7 +387,7 @@
 	dev->id.product	= user_dev->id.product;
 	dev->id.version	= user_dev->id.version;
 
-	size = sizeof(int) * (ABS_MAX + 1);
+	size = sizeof(int) * ABS_CNT;
 	memcpy(dev->absmax, user_dev->absmax, size);
 	memcpy(dev->absmin, user_dev->absmin, size);
 	memcpy(dev->absfuzz, user_dev->absfuzz, size);
diff --git a/drivers/input/mouse/amimouse.c b/drivers/input/mouse/amimouse.c
index a185ac7..ff5f61a 100644
--- a/drivers/input/mouse/amimouse.c
+++ b/drivers/input/mouse/amimouse.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
 
 #include <asm/irq.h>
 #include <asm/setup.h>
@@ -34,10 +35,10 @@
 MODULE_LICENSE("GPL");
 
 static int amimouse_lastx, amimouse_lasty;
-static struct input_dev *amimouse_dev;
 
-static irqreturn_t amimouse_interrupt(int irq, void *dummy)
+static irqreturn_t amimouse_interrupt(int irq, void *data)
 {
+	struct input_dev *dev = data;
 	unsigned short joy0dat, potgor;
 	int nx, ny, dx, dy;
 
@@ -59,14 +60,14 @@
 
 	potgor = amiga_custom.potgor;
 
-	input_report_rel(amimouse_dev, REL_X, dx);
-	input_report_rel(amimouse_dev, REL_Y, dy);
+	input_report_rel(dev, REL_X, dx);
+	input_report_rel(dev, REL_Y, dy);
 
-	input_report_key(amimouse_dev, BTN_LEFT,   ciaa.pra & 0x40);
-	input_report_key(amimouse_dev, BTN_MIDDLE, potgor & 0x0100);
-	input_report_key(amimouse_dev, BTN_RIGHT,  potgor & 0x0400);
+	input_report_key(dev, BTN_LEFT,   ciaa.pra & 0x40);
+	input_report_key(dev, BTN_MIDDLE, potgor & 0x0100);
+	input_report_key(dev, BTN_RIGHT,  potgor & 0x0400);
 
-	input_sync(amimouse_dev);
+	input_sync(dev);
 
 	return IRQ_HANDLED;
 }
@@ -74,63 +75,90 @@
 static int amimouse_open(struct input_dev *dev)
 {
 	unsigned short joy0dat;
+	int error;
 
 	joy0dat = amiga_custom.joy0dat;
 
 	amimouse_lastx = joy0dat & 0xff;
 	amimouse_lasty = joy0dat >> 8;
 
-	if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) {
-                printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
-                return -EBUSY;
-        }
+	error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse",
+			    dev);
+	if (error)
+		dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
 
-        return 0;
+	return error;
 }
 
 static void amimouse_close(struct input_dev *dev)
 {
-	free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt);
+	free_irq(IRQ_AMIGA_VERTB, dev);
 }
 
-static int __init amimouse_init(void)
+static int __init amimouse_probe(struct platform_device *pdev)
 {
 	int err;
+	struct input_dev *dev;
 
-	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_MOUSE))
-		return -ENODEV;
-
-	amimouse_dev = input_allocate_device();
-	if (!amimouse_dev)
+	dev = input_allocate_device();
+	if (!dev)
 		return -ENOMEM;
 
-	amimouse_dev->name = "Amiga mouse";
-	amimouse_dev->phys = "amimouse/input0";
-	amimouse_dev->id.bustype = BUS_AMIGA;
-	amimouse_dev->id.vendor = 0x0001;
-	amimouse_dev->id.product = 0x0002;
-	amimouse_dev->id.version = 0x0100;
+	dev->name = pdev->name;
+	dev->phys = "amimouse/input0";
+	dev->id.bustype = BUS_AMIGA;
+	dev->id.vendor = 0x0001;
+	dev->id.product = 0x0002;
+	dev->id.version = 0x0100;
 
-	amimouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
-	amimouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
-	amimouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
+	dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+	dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+	dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
 		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
-	amimouse_dev->open = amimouse_open;
-	amimouse_dev->close = amimouse_close;
+	dev->open = amimouse_open;
+	dev->close = amimouse_close;
+	dev->dev.parent = &pdev->dev;
 
-	err = input_register_device(amimouse_dev);
+	err = input_register_device(dev);
 	if (err) {
-		input_free_device(amimouse_dev);
+		input_free_device(dev);
 		return err;
 	}
 
+	platform_set_drvdata(pdev, dev);
+
 	return 0;
 }
 
-static void __exit amimouse_exit(void)
+static int __exit amimouse_remove(struct platform_device *pdev)
 {
-        input_unregister_device(amimouse_dev);
+	struct input_dev *dev = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	input_unregister_device(dev);
+	return 0;
+}
+
+static struct platform_driver amimouse_driver = {
+	.remove = __exit_p(amimouse_remove),
+	.driver   = {
+		.name	= "amiga-mouse",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amimouse_init(void)
+{
+	return platform_driver_probe(&amimouse_driver, amimouse_probe);
 }
 
 module_init(amimouse_init);
+
+static void __exit amimouse_exit(void)
+{
+	platform_driver_unregister(&amimouse_driver);
+}
+
 module_exit(amimouse_exit);
+
+MODULE_ALIAS("platform:amiga-mouse");
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 532279c..634f6f6 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -1163,8 +1163,8 @@
 
 	ts->reg = regulator_get(&spi->dev, "vcc");
 	if (IS_ERR(ts->reg)) {
-		dev_err(&spi->dev, "unable to get regulator: %ld\n",
-			PTR_ERR(ts->reg));
+		err = PTR_ERR(ts->reg);
+		dev_err(&spi->dev, "unable to get regulator: %ld\n", err);
 		goto err_free_gpio;
 	}
 
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index e0b7c83..ac5d0f9 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -413,6 +413,8 @@
 #endif
 
 static struct platform_device_id s3cts_driver_ids[] = {
+	{ "s3c2410-ts", 0 },
+	{ "s3c2440-ts", 0 },
 	{ "s3c64xx-ts", FEAT_PEN_IRQ },
 	{ }
 };
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 29a8bbf..567d572 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -857,6 +857,11 @@
 	if ((pkt[0] & 0xe0) != 0xe0)
 		return 0;
 
+	if (be16_to_cpu(packet->data_len) > 0xff)
+		packet->data_len = cpu_to_be16(be16_to_cpu(packet->data_len) - 0x100);
+	if (be16_to_cpu(packet->x_len) > 0xff)
+		packet->x_len = cpu_to_be16(be16_to_cpu(packet->x_len) - 0x80);
+
 	/* send ACK */
 	ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
 
@@ -1112,7 +1117,7 @@
 
 #ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
 	[DEVTYPE_NEXIO] = {
-		.rept_size	= 128,
+		.rept_size	= 1024,
 		.irq_always	= true,
 		.read_data	= nexio_read_data,
 		.init		= nexio_init,
diff --git a/drivers/isdn/capi/kcapi.c b/drivers/isdn/capi/kcapi.c
index bd00dce..bde3c88 100644
--- a/drivers/isdn/capi/kcapi.c
+++ b/drivers/isdn/capi/kcapi.c
@@ -1147,6 +1147,12 @@
 		if (ctr->state == CAPI_CTR_DETECTED)
 			goto reset_unlock_out;
 
+		if (ctr->reset_ctr == NULL) {
+			printk(KERN_DEBUG "kcapi: reset: no reset function\n");
+			retval = -ESRCH;
+			goto reset_unlock_out;
+		}
+
 		ctr->reset_ctr(ctr);
 
 		retval = wait_on_ctr_state(ctr, CAPI_CTR_DETECTED);
diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index ac4cfee..8f78f15 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -922,30 +922,6 @@
  */
 
 /*
- * load firmware
- */
-static int gigaset_load_firmware(struct capi_ctr *ctr, capiloaddata *data)
-{
-	struct cardstate *cs = ctr->driverdata;
-
-	/* AVM specific operation, not needed for Gigaset -- ignore */
-	dev_notice(cs->dev, "load_firmware ignored\n");
-
-	return 0;
-}
-
-/*
- * reset (deactivate) controller
- */
-static void gigaset_reset_ctr(struct capi_ctr *ctr)
-{
-	struct cardstate *cs = ctr->driverdata;
-
-	/* AVM specific operation, not needed for Gigaset -- ignore */
-	dev_notice(cs->dev, "reset_ctr ignored\n");
-}
-
-/*
  * register CAPI application
  */
 static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl,
@@ -2202,8 +2178,8 @@
 	iif->ctr.driverdata    = cs;
 	strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name));
 	iif->ctr.driver_name   = "gigaset";
-	iif->ctr.load_firmware = gigaset_load_firmware;
-	iif->ctr.reset_ctr     = gigaset_reset_ctr;
+	iif->ctr.load_firmware = NULL;
+	iif->ctr.reset_ctr     = NULL;
 	iif->ctr.register_appl = gigaset_register_appl;
 	iif->ctr.release_appl  = gigaset_release_appl;
 	iif->ctr.send_message  = gigaset_send_message;
diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c
index c3243c9..81048b8 100644
--- a/drivers/isdn/mISDN/timerdev.c
+++ b/drivers/isdn/mISDN/timerdev.c
@@ -98,8 +98,6 @@
 	if (*debug & DEBUG_TIMER)
 		printk(KERN_DEBUG "%s(%p, %p, %d, %p)\n", __func__,
 			filep, buf, (int)count, off);
-	if (*off != filep->f_pos)
-		return -ESPIPE;
 
 	if (list_empty(&dev->expired) && (dev->work == 0)) {
 		if (filep->f_flags & O_NONBLOCK)
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 505eb64..81bf25e 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -21,7 +21,7 @@
 
 config LEDS_88PM860X
 	tristate "LED Support for Marvell 88PM860x PMIC"
-	depends on LEDS_CLASS && MFD_88PM860X
+	depends on MFD_88PM860X
 	help
 	  This option enables support for on-chip LED drivers found on Marvell
 	  Semiconductor 88PM8606 PMIC.
@@ -67,6 +67,16 @@
 	  This option enables support for the Soekris net4801 and net4826 error
 	  LED.
 
+config LEDS_NET5501
+	tristate "LED Support for Soekris net5501 series Error LED"
+	depends on LEDS_TRIGGERS
+	depends on X86 && LEDS_GPIO_PLATFORM && GPIO_CS5535
+	select LEDS_TRIGGER_DEFAULT_ON
+	default n
+	help
+	  Add support for the Soekris net5501 board (detection, error led
+	  and GPIO).
+
 config LEDS_FSG
 	tristate "LED Support for the Freecom FSG-3"
 	depends on MACH_FSG
@@ -285,6 +295,13 @@
 	  This adds support for the Latitude 2100 and similar
 	  notebooks that have an external LED.
 
+config LEDS_MC13783
+	tristate "LED Support for MC13783 PMIC"
+	depends on MFD_MC13783
+	help
+	  This option enable support for on-chip LED drivers found
+	  on Freescale Semiconductor MC13783 PMIC.
+
 config LEDS_TRIGGERS
 	bool "LED Trigger support"
 	help
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 0cd8b99..2493de4 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -13,6 +13,7 @@
 obj-$(CONFIG_LEDS_S3C24XX)		+= leds-s3c24xx.o
 obj-$(CONFIG_LEDS_AMS_DELTA)		+= leds-ams-delta.o
 obj-$(CONFIG_LEDS_NET48XX)		+= leds-net48xx.o
+obj-$(CONFIG_LEDS_NET5501)		+= leds-net5501.o
 obj-$(CONFIG_LEDS_WRAP)			+= leds-wrap.o
 obj-$(CONFIG_LEDS_ALIX2)		+= leds-alix2.o
 obj-$(CONFIG_LEDS_H1940)		+= leds-h1940.o
@@ -35,6 +36,7 @@
 obj-$(CONFIG_LEDS_LT3593)		+= leds-lt3593.o
 obj-$(CONFIG_LEDS_ADP5520)		+= leds-adp5520.o
 obj-$(CONFIG_LEDS_DELL_NETBOOKS)	+= dell-led.o
+obj-$(CONFIG_LEDS_MC13783)		+= leds-mc13783.o
 
 # LED SPI Drivers
 obj-$(CONFIG_LEDS_DAC124S085)		+= leds-dac124s085.o
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 69e7d86..2606600 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -74,7 +74,7 @@
 
 static struct device_attribute led_class_attrs[] = {
 	__ATTR(brightness, 0644, led_brightness_show, led_brightness_store),
-	__ATTR(max_brightness, 0644, led_max_brightness_show, NULL),
+	__ATTR(max_brightness, 0444, led_max_brightness_show, NULL),
 #ifdef CONFIG_LEDS_TRIGGERS
 	__ATTR(trigger, 0644, led_trigger_show, led_trigger_store),
 #endif
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
index 16a60c0..b767710 100644
--- a/drivers/leds/leds-88pm860x.c
+++ b/drivers/leds/leds-88pm860x.c
@@ -256,8 +256,10 @@
 	if (pdev->dev.parent->platform_data) {
 		pm860x_pdata = pdev->dev.parent->platform_data;
 		pdata = pm860x_pdata->led;
-	} else
-		pdata = NULL;
+	} else {
+		dev_err(&pdev->dev, "missing platform data\n");
+		return -EINVAL;
+	}
 
 	data = kzalloc(sizeof(struct pm860x_led), GFP_KERNEL);
 	if (data == NULL)
@@ -268,8 +270,11 @@
 	data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
 	data->iset = pdata->iset;
 	data->port = __check_device(pdata, data->name);
-	if (data->port < 0)
+	if (data->port < 0) {
+		dev_err(&pdev->dev, "check device failed\n");
+		kfree(data);
 		return -EINVAL;
+	}
 
 	data->current_brightness = 0;
 	data->cdev.name = data->name;
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 6d94b0b..cc22eee 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -26,7 +26,8 @@
 	u8 new_level;
 	u8 can_sleep;
 	u8 active_low;
-	int (*platform_gpio_blink_set)(unsigned gpio,
+	u8 blinking;
+	int (*platform_gpio_blink_set)(unsigned gpio, int state,
 			unsigned long *delay_on, unsigned long *delay_off);
 };
 
@@ -35,7 +36,13 @@
 	struct gpio_led_data	*led_dat =
 		container_of(work, struct gpio_led_data, work);
 
-	gpio_set_value_cansleep(led_dat->gpio, led_dat->new_level);
+	if (led_dat->blinking) {
+		led_dat->platform_gpio_blink_set(led_dat->gpio,
+						 led_dat->new_level,
+						 NULL, NULL);
+		led_dat->blinking = 0;
+	} else
+		gpio_set_value_cansleep(led_dat->gpio, led_dat->new_level);
 }
 
 static void gpio_led_set(struct led_classdev *led_cdev,
@@ -60,8 +67,14 @@
 	if (led_dat->can_sleep) {
 		led_dat->new_level = level;
 		schedule_work(&led_dat->work);
-	} else
-		gpio_set_value(led_dat->gpio, level);
+	} else {
+		if (led_dat->blinking) {
+			led_dat->platform_gpio_blink_set(led_dat->gpio, level,
+							 NULL, NULL);
+			led_dat->blinking = 0;
+		} else
+			gpio_set_value(led_dat->gpio, level);
+	}
 }
 
 static int gpio_blink_set(struct led_classdev *led_cdev,
@@ -70,12 +83,14 @@
 	struct gpio_led_data *led_dat =
 		container_of(led_cdev, struct gpio_led_data, cdev);
 
-	return led_dat->platform_gpio_blink_set(led_dat->gpio, delay_on, delay_off);
+	led_dat->blinking = 1;
+	return led_dat->platform_gpio_blink_set(led_dat->gpio, GPIO_LED_BLINK,
+						delay_on, delay_off);
 }
 
 static int __devinit create_gpio_led(const struct gpio_led *template,
 	struct gpio_led_data *led_dat, struct device *parent,
-	int (*blink_set)(unsigned, unsigned long *, unsigned long *))
+	int (*blink_set)(unsigned, int, unsigned long *, unsigned long *))
 {
 	int ret, state;
 
@@ -97,6 +112,7 @@
 	led_dat->gpio = template->gpio;
 	led_dat->can_sleep = gpio_cansleep(template->gpio);
 	led_dat->active_low = template->active_low;
+	led_dat->blinking = 0;
 	if (blink_set) {
 		led_dat->platform_gpio_blink_set = blink_set;
 		led_dat->cdev.blink_set = gpio_blink_set;
@@ -113,7 +129,7 @@
 	ret = gpio_direction_output(led_dat->gpio, led_dat->active_low ^ state);
 	if (ret < 0)
 		goto err;
-
+		
 	INIT_WORK(&led_dat->work, gpio_led_work);
 
 	ret = led_classdev_register(parent, &led_dat->cdev);
diff --git a/drivers/leds/leds-lp3944.c b/drivers/leds/leds-lp3944.c
index 8d5ecce..932a58d 100644
--- a/drivers/leds/leds-lp3944.c
+++ b/drivers/leds/leds-lp3944.c
@@ -379,6 +379,7 @@
 {
 	struct lp3944_platform_data *lp3944_pdata = client->dev.platform_data;
 	struct lp3944_data *data;
+	int err;
 
 	if (lp3944_pdata == NULL) {
 		dev_err(&client->dev, "no platform data\n");
@@ -401,9 +402,13 @@
 
 	mutex_init(&data->lock);
 
-	dev_info(&client->dev, "lp3944 enabled\n");
+	err = lp3944_configure(client, data, lp3944_pdata);
+	if (err < 0) {
+		kfree(data);
+		return err;
+	}
 
-	lp3944_configure(client, data, lp3944_pdata);
+	dev_info(&client->dev, "lp3944 enabled\n");
 	return 0;
 }
 
diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c
new file mode 100644
index 0000000..f05bb08
--- /dev/null
+++ b/drivers/leds/leds-mc13783.c
@@ -0,0 +1,403 @@
+/*
+ * LEDs driver for Freescale MC13783
+ *
+ * Copyright (C) 2010 Philippe Rétornaz
+ *
+ * Based on leds-da903x:
+ * Copyright (C) 2008 Compulab, Ltd.
+ *      Mike Rapoport <mike@compulab.co.il>
+ *
+ * Copyright (C) 2006-2008 Marvell International Ltd.
+ *      Eric Miao <eric.miao@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/mc13783.h>
+#include <linux/slab.h>
+
+struct mc13783_led {
+	struct led_classdev	cdev;
+	struct work_struct	work;
+	struct mc13783		*master;
+	enum led_brightness	new_brightness;
+	int			id;
+};
+
+#define MC13783_REG_LED_CONTROL_0	51
+#define MC13783_LED_C0_ENABLE_BIT	(1 << 0)
+#define MC13783_LED_C0_TRIODE_MD_BIT	(1 << 7)
+#define MC13783_LED_C0_TRIODE_AD_BIT	(1 << 8)
+#define MC13783_LED_C0_TRIODE_KP_BIT	(1 << 9)
+#define MC13783_LED_C0_BOOST_BIT	(1 << 10)
+#define MC13783_LED_C0_ABMODE_MASK	0x7
+#define MC13783_LED_C0_ABMODE		11
+#define MC13783_LED_C0_ABREF_MASK	0x3
+#define MC13783_LED_C0_ABREF		14
+
+#define MC13783_REG_LED_CONTROL_1	52
+#define MC13783_LED_C1_TC1HALF_BIT	(1 << 18)
+
+#define MC13783_REG_LED_CONTROL_2	53
+#define MC13783_LED_C2_BL_P_MASK	0xf
+#define MC13783_LED_C2_MD_P		9
+#define MC13783_LED_C2_AD_P		13
+#define MC13783_LED_C2_KP_P		17
+#define MC13783_LED_C2_BL_C_MASK	0x7
+#define MC13783_LED_C2_MD_C		0
+#define MC13783_LED_C2_AD_C		3
+#define MC13783_LED_C2_KP_C		6
+
+#define MC13783_REG_LED_CONTROL_3	54
+#define MC13783_LED_C3_TC_P		6
+#define MC13783_LED_C3_TC_P_MASK	0x1f
+
+#define MC13783_REG_LED_CONTROL_4	55
+#define MC13783_REG_LED_CONTROL_5	56
+
+#define MC13783_LED_Cx_PERIOD		21
+#define MC13783_LED_Cx_PERIOD_MASK	0x3
+#define MC13783_LED_Cx_SLEWLIM_BIT      (1 << 23)
+#define MC13783_LED_Cx_TRIODE_TC_BIT	(1 << 23)
+#define MC13783_LED_Cx_TC_C_MASK	0x3
+
+static void mc13783_led_work(struct work_struct *work)
+{
+	struct mc13783_led *led = container_of(work, struct mc13783_led, work);
+	int reg = 0;
+	int mask = 0;
+	int value = 0;
+	int bank, off, shift;
+
+	switch (led->id) {
+	case MC13783_LED_MD:
+		reg = MC13783_REG_LED_CONTROL_2;
+		mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_MD_P;
+		value = (led->new_brightness >> 4) << MC13783_LED_C2_MD_P;
+		break;
+	case MC13783_LED_AD:
+		reg = MC13783_REG_LED_CONTROL_2;
+		mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_AD_P;
+		value = (led->new_brightness >> 4) << MC13783_LED_C2_AD_P;
+		break;
+	case MC13783_LED_KP:
+		reg = MC13783_REG_LED_CONTROL_2;
+		mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_KP_P;
+		value = (led->new_brightness >> 4) << MC13783_LED_C2_KP_P;
+		break;
+	case MC13783_LED_R1:
+	case MC13783_LED_G1:
+	case MC13783_LED_B1:
+	case MC13783_LED_R2:
+	case MC13783_LED_G2:
+	case MC13783_LED_B2:
+	case MC13783_LED_R3:
+	case MC13783_LED_G3:
+	case MC13783_LED_B3:
+		off = led->id - MC13783_LED_R1;
+		bank = off/3;
+		reg = MC13783_REG_LED_CONTROL_3 + off/3;
+		shift = (off - bank * 3) * 5 + MC13783_LED_C3_TC_P;
+		value = (led->new_brightness >> 3) << shift;
+		mask = MC13783_LED_C3_TC_P_MASK << shift;
+		break;
+	}
+
+	mc13783_lock(led->master);
+
+	mc13783_reg_rmw(led->master, reg, mask, value);
+
+	mc13783_unlock(led->master);
+}
+
+static void mc13783_led_set(struct led_classdev *led_cdev,
+			   enum led_brightness value)
+{
+	struct mc13783_led *led;
+
+	led = container_of(led_cdev, struct mc13783_led, cdev);
+	led->new_brightness = value;
+	schedule_work(&led->work);
+}
+
+static int __devinit mc13783_led_setup(struct mc13783_led *led, int max_current)
+{
+	int shift = 0;
+	int mask = 0;
+	int value = 0;
+	int reg = 0;
+	int ret, bank;
+
+	switch (led->id) {
+	case MC13783_LED_MD:
+		shift = MC13783_LED_C2_MD_C;
+		mask = MC13783_LED_C2_BL_C_MASK;
+		value = max_current & MC13783_LED_C2_BL_C_MASK;
+		reg = MC13783_REG_LED_CONTROL_2;
+		break;
+	case MC13783_LED_AD:
+		shift = MC13783_LED_C2_AD_C;
+		mask = MC13783_LED_C2_BL_C_MASK;
+		value = max_current & MC13783_LED_C2_BL_C_MASK;
+		reg = MC13783_REG_LED_CONTROL_2;
+		break;
+	case MC13783_LED_KP:
+		shift = MC13783_LED_C2_KP_C;
+		mask = MC13783_LED_C2_BL_C_MASK;
+		value = max_current & MC13783_LED_C2_BL_C_MASK;
+		reg = MC13783_REG_LED_CONTROL_2;
+		break;
+	case MC13783_LED_R1:
+	case MC13783_LED_G1:
+	case MC13783_LED_B1:
+	case MC13783_LED_R2:
+	case MC13783_LED_G2:
+	case MC13783_LED_B2:
+	case MC13783_LED_R3:
+	case MC13783_LED_G3:
+	case MC13783_LED_B3:
+		bank = (led->id - MC13783_LED_R1)/3;
+		reg = MC13783_REG_LED_CONTROL_3 + bank;
+		shift = ((led->id - MC13783_LED_R1) - bank * 3) * 2;
+		mask = MC13783_LED_Cx_TC_C_MASK;
+		value = max_current & MC13783_LED_Cx_TC_C_MASK;
+		break;
+	}
+
+	mc13783_lock(led->master);
+
+	ret = mc13783_reg_rmw(led->master, reg, mask << shift,
+						value << shift);
+
+	mc13783_unlock(led->master);
+	return ret;
+}
+
+static int __devinit mc13783_leds_prepare(struct platform_device *pdev)
+{
+	struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
+	int ret = 0;
+	int reg = 0;
+
+	mc13783_lock(dev);
+
+	if (pdata->flags & MC13783_LED_TC1HALF)
+		reg |= MC13783_LED_C1_TC1HALF_BIT;
+
+	if (pdata->flags & MC13783_LED_SLEWLIMTC)
+		reg |= MC13783_LED_Cx_SLEWLIM_BIT;
+
+	ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_1, reg);
+	if (ret)
+		goto out;
+
+	reg = (pdata->bl_period & MC13783_LED_Cx_PERIOD_MASK) <<
+							MC13783_LED_Cx_PERIOD;
+
+	if (pdata->flags & MC13783_LED_SLEWLIMBL)
+		reg |= MC13783_LED_Cx_SLEWLIM_BIT;
+
+	ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_2, reg);
+	if (ret)
+		goto out;
+
+	reg = (pdata->tc1_period & MC13783_LED_Cx_PERIOD_MASK) <<
+							MC13783_LED_Cx_PERIOD;
+
+	if (pdata->flags & MC13783_LED_TRIODE_TC1)
+		reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
+
+	ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_3, reg);
+	if (ret)
+		goto out;
+
+	reg = (pdata->tc2_period & MC13783_LED_Cx_PERIOD_MASK) <<
+							MC13783_LED_Cx_PERIOD;
+
+	if (pdata->flags & MC13783_LED_TRIODE_TC2)
+		reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
+
+	ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_4, reg);
+	if (ret)
+		goto out;
+
+	reg = (pdata->tc3_period & MC13783_LED_Cx_PERIOD_MASK) <<
+							MC13783_LED_Cx_PERIOD;
+
+	if (pdata->flags & MC13783_LED_TRIODE_TC3)
+		reg |= MC13783_LED_Cx_TRIODE_TC_BIT;;
+
+	ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_5, reg);
+	if (ret)
+		goto out;
+
+	reg = MC13783_LED_C0_ENABLE_BIT;
+	if (pdata->flags & MC13783_LED_TRIODE_MD)
+		reg |= MC13783_LED_C0_TRIODE_MD_BIT;
+	if (pdata->flags & MC13783_LED_TRIODE_AD)
+		reg |= MC13783_LED_C0_TRIODE_AD_BIT;
+	if (pdata->flags & MC13783_LED_TRIODE_KP)
+		reg |= MC13783_LED_C0_TRIODE_KP_BIT;
+	if (pdata->flags & MC13783_LED_BOOST_EN)
+		reg |= MC13783_LED_C0_BOOST_BIT;
+
+	reg |= (pdata->abmode & MC13783_LED_C0_ABMODE_MASK) <<
+							MC13783_LED_C0_ABMODE;
+	reg |= (pdata->abref & MC13783_LED_C0_ABREF_MASK) <<
+							MC13783_LED_C0_ABREF;
+
+	ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_0, reg);
+
+out:
+	mc13783_unlock(dev);
+	return ret;
+}
+
+static int __devinit mc13783_led_probe(struct platform_device *pdev)
+{
+	struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct mc13783_led_platform_data *led_cur;
+	struct mc13783_led *led, *led_dat;
+	int ret, i;
+	int init_led = 0;
+
+	if (pdata == NULL) {
+		dev_err(&pdev->dev, "missing platform data\n");
+		return -ENODEV;
+	}
+
+	if (pdata->num_leds < 1 || pdata->num_leds > MC13783_LED_MAX) {
+		dev_err(&pdev->dev, "Invalid led count %d\n", pdata->num_leds);
+		return -EINVAL;
+	}
+
+	led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL);
+	if (led == NULL) {
+		dev_err(&pdev->dev, "failed to alloc memory\n");
+		return -ENOMEM;
+	}
+
+	ret = mc13783_leds_prepare(pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to init led driver\n");
+		goto err_free;
+	}
+
+	for (i = 0; i < pdata->num_leds; i++) {
+		led_dat = &led[i];
+		led_cur = &pdata->led[i];
+
+		if (led_cur->id > MC13783_LED_MAX || led_cur->id < 0) {
+			dev_err(&pdev->dev, "invalid id %d\n", led_cur->id);
+			ret = -EINVAL;
+			goto err_register;
+		}
+
+		if (init_led & (1 << led_cur->id)) {
+			dev_err(&pdev->dev, "led %d already initialized\n",
+					led_cur->id);
+			ret = -EINVAL;
+			goto err_register;
+		}
+
+		init_led |= 1 << led_cur->id;
+		led_dat->cdev.name = led_cur->name;
+		led_dat->cdev.default_trigger = led_cur->default_trigger;
+		led_dat->cdev.brightness_set = mc13783_led_set;
+		led_dat->cdev.brightness = LED_OFF;
+		led_dat->id = led_cur->id;
+		led_dat->master = dev_get_drvdata(pdev->dev.parent);
+
+		INIT_WORK(&led_dat->work, mc13783_led_work);
+
+		ret = led_classdev_register(pdev->dev.parent, &led_dat->cdev);
+		if (ret) {
+			dev_err(&pdev->dev, "failed to register led %d\n",
+					led_dat->id);
+			goto err_register;
+		}
+
+		ret = mc13783_led_setup(led_dat, led_cur->max_current);
+		if (ret) {
+			dev_err(&pdev->dev, "unable to init led %d\n",
+					led_dat->id);
+			i++;
+			goto err_register;
+		}
+	}
+
+	platform_set_drvdata(pdev, led);
+	return 0;
+
+err_register:
+	for (i = i - 1; i >= 0; i--) {
+		led_classdev_unregister(&led[i].cdev);
+		cancel_work_sync(&led[i].work);
+	}
+
+err_free:
+	kfree(led);
+	return ret;
+}
+
+static int __devexit mc13783_led_remove(struct platform_device *pdev)
+{
+	struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct mc13783_led *led = platform_get_drvdata(pdev);
+	struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
+	int i;
+
+	for (i = 0; i < pdata->num_leds; i++) {
+		led_classdev_unregister(&led[i].cdev);
+		cancel_work_sync(&led[i].work);
+	}
+
+	mc13783_lock(dev);
+
+	mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_0, 0);
+	mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_1, 0);
+	mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_2, 0);
+	mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_3, 0);
+	mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_4, 0);
+	mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_5, 0);
+
+	mc13783_unlock(dev);
+
+	kfree(led);
+	return 0;
+}
+
+static struct platform_driver mc13783_led_driver = {
+	.driver	= {
+		.name	= "mc13783-led",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= mc13783_led_probe,
+	.remove		= __devexit_p(mc13783_led_remove),
+};
+
+static int __init mc13783_led_init(void)
+{
+	return platform_driver_register(&mc13783_led_driver);
+}
+module_init(mc13783_led_init);
+
+static void __exit mc13783_led_exit(void)
+{
+	platform_driver_unregister(&mc13783_led_driver);
+}
+module_exit(mc13783_led_exit);
+
+MODULE_DESCRIPTION("LEDs driver for Freescale MC13783 PMIC");
+MODULE_AUTHOR("Philippe Retornaz <philippe.retornaz@epfl.ch>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mc13783-led");
diff --git a/drivers/leds/leds-net5501.c b/drivers/leds/leds-net5501.c
new file mode 100644
index 0000000..3063f59
--- /dev/null
+++ b/drivers/leds/leds-net5501.c
@@ -0,0 +1,94 @@
+/*
+ * Soekris board support code
+ *
+ * Copyright (C) 2008-2009 Tower Technologies
+ * Written by Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/string.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/geode.h>
+
+static struct gpio_led net5501_leds[] = {
+	{
+		.name = "error",
+		.gpio = 6,
+		.default_trigger = "default-on",
+	},
+};
+
+static struct gpio_led_platform_data net5501_leds_data = {
+	.num_leds = ARRAY_SIZE(net5501_leds),
+	.leds = net5501_leds,
+};
+
+static struct platform_device net5501_leds_dev = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev.platform_data = &net5501_leds_data,
+};
+
+static void __init init_net5501(void)
+{
+	platform_device_register(&net5501_leds_dev);
+}
+
+struct soekris_board {
+	u16	offset;
+	char	*sig;
+	u8	len;
+	void	(*init)(void);
+};
+
+static struct soekris_board __initdata boards[] = {
+	{ 0xb7b, "net5501", 7, init_net5501 },	/* net5501 v1.33/1.33c */
+	{ 0xb1f, "net5501", 7, init_net5501 },	/* net5501 v1.32i */
+};
+
+static int __init soekris_init(void)
+{
+	int i;
+	unsigned char *rombase, *bios;
+
+	if (!is_geode())
+		return 0;
+
+	rombase = ioremap(0xffff0000, 0xffff);
+	if (!rombase) {
+		printk(KERN_INFO "Soekris net5501 LED driver failed to get rombase");
+		return 0;
+	}
+
+	bios = rombase + 0x20;	/* null terminated */
+
+	if (strncmp(bios, "comBIOS", 7))
+		goto unmap;
+
+	for (i = 0; i < ARRAY_SIZE(boards); i++) {
+		unsigned char *model = rombase + boards[i].offset;
+
+		if (strncmp(model, boards[i].sig, boards[i].len) == 0) {
+			printk(KERN_INFO "Soekris %s: %s\n", model, bios);
+
+			if (boards[i].init)
+				boards[i].init();
+			break;
+		}
+	}
+
+unmap:
+	iounmap(rombase);
+	return 0;
+}
+
+arch_initcall(soekris_init);
diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c
index 51477ec..a688293 100644
--- a/drivers/leds/leds-ss4200.c
+++ b/drivers/leds/leds-ss4200.c
@@ -534,7 +534,7 @@
 	set_power_light_amber_noblink();
 	return 0;
 out_err:
-	for (; i >= 0; i--)
+	for (i--; i >= 0; i--)
 		unregister_nasgpio_led(i);
 	pci_unregister_driver(&nas_gpio_pci_driver);
 	return ret;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 9ea17d6..d2c0f94 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4645,7 +4645,7 @@
 			kfree(percpu->scribble);
 			pr_err("%s: failed memory allocation for cpu%ld\n",
 			       __func__, cpu);
-			return NOTIFY_BAD;
+			return notifier_from_errno(-ENOMEM);
 		}
 		break;
 	case CPU_DEAD:
diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
index d33693c..c4b117f 100644
--- a/drivers/message/i2o/i2o_config.c
+++ b/drivers/message/i2o/i2o_config.c
@@ -186,14 +186,9 @@
 	if (!dev)
 		return -ENXIO;
 
-	ops = kmalloc(kcmd.oplen, GFP_KERNEL);
-	if (!ops)
-		return -ENOMEM;
-
-	if (copy_from_user(ops, kcmd.opbuf, kcmd.oplen)) {
-		kfree(ops);
-		return -EFAULT;
-	}
+	ops = memdup_user(kcmd.opbuf, kcmd.oplen);
+	if (IS_ERR(ops))
+		return PTR_ERR(ops);
 
 	/*
 	 * It's possible to have a _very_ large table
diff --git a/drivers/mfd/mc13783-core.c b/drivers/mfd/mc13783-core.c
index 1f68eca..fecf38a 100644
--- a/drivers/mfd/mc13783-core.c
+++ b/drivers/mfd/mc13783-core.c
@@ -679,6 +679,10 @@
 	if (pdata->flags & MC13783_USE_TOUCHSCREEN)
 		mc13783_add_subdevice(mc13783, "mc13783-ts");
 
+	if (pdata->flags & MC13783_USE_LED)
+		mc13783_add_subdevice_pdata(mc13783, "mc13783-led",
+					pdata->leds, sizeof(*pdata->leds));
+
 	return 0;
 }
 
diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
index 63a614d..dc95ddb 100644
--- a/drivers/mfd/pcf50633-core.c
+++ b/drivers/mfd/pcf50633-core.c
@@ -620,6 +620,9 @@
 						&pcf->mbc_pdev);
 	pcf50633_client_dev_register(pcf, "pcf50633-adc",
 						&pcf->adc_pdev);
+	pcf50633_client_dev_register(pcf, "pcf50633-backlight",
+						&pcf->bl_pdev);
+
 
 	for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
 		struct platform_device *pdev;
diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c
index 31a9911..5bfb2a2 100644
--- a/drivers/misc/lkdtm.c
+++ b/drivers/misc/lkdtm.c
@@ -75,6 +75,9 @@
 	UNALIGNED_LOAD_STORE_WRITE,
 	OVERWRITE_ALLOCATION,
 	WRITE_AFTER_FREE,
+	SOFTLOCKUP,
+	HARDLOCKUP,
+	HUNG_TASK,
 };
 
 static char* cp_name[] = {
@@ -99,6 +102,9 @@
 	"UNALIGNED_LOAD_STORE_WRITE",
 	"OVERWRITE_ALLOCATION",
 	"WRITE_AFTER_FREE",
+	"SOFTLOCKUP",
+	"HARDLOCKUP",
+	"HUNG_TASK",
 };
 
 static struct jprobe lkdtm;
@@ -320,6 +326,20 @@
 		memset(data, 0x78, len);
 		break;
 	}
+	case SOFTLOCKUP:
+		preempt_disable();
+		for (;;)
+			cpu_relax();
+		break;
+	case HARDLOCKUP:
+		local_irq_disable();
+		for (;;)
+			cpu_relax();
+		break;
+	case HUNG_TASK:
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule();
+		break;
 	case NONE:
 	default:
 		break;
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 3168ebd..569e94d 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1252,9 +1252,8 @@
 /**
  *	mmc_suspend_host - suspend a host
  *	@host: mmc host
- *	@state: suspend mode (PM_SUSPEND_xxx)
  */
-int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
+int mmc_suspend_host(struct mmc_host *host)
 {
 	int err = 0;
 
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 0d96080..63772e7 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -79,8 +79,6 @@
 	 * we cannot use the retries field in mmc_command.
 	 */
 	for (i = 0;i <= retries;i++) {
-		memset(&mrq, 0, sizeof(struct mmc_request));
-
 		err = mmc_app_cmd(host, card);
 		if (err) {
 			/* no point in retrying; no APP commands allowed */
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index ff27c8c..0f687cd 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -406,6 +406,36 @@
 EXPORT_SYMBOL_GPL(sdio_writeb);
 
 /**
+ *	sdio_writeb_readb - write and read a byte from SDIO function
+ *	@func: SDIO function to access
+ *	@write_byte: byte to write
+ *	@addr: address to write to
+ *	@err_ret: optional status value from transfer
+ *
+ *	Performs a RAW (Read after Write) operation as defined by SDIO spec -
+ *	single byte is written to address space of a given SDIO function and
+ *	response is read back from the same address, both using single request.
+ *	If there is a problem with the operation, 0xff is returned and
+ *	@err_ret will contain the error code.
+ */
+u8 sdio_writeb_readb(struct sdio_func *func, u8 write_byte,
+	unsigned int addr, int *err_ret)
+{
+	int ret;
+	u8 val;
+
+	ret = mmc_io_rw_direct(func->card, 1, func->num, addr,
+			write_byte, &val);
+	if (err_ret)
+		*err_ret = ret;
+	if (ret)
+		val = 0xff;
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(sdio_writeb_readb);
+
+/**
  *	sdio_memcpy_fromio - read a chunk of memory from a SDIO function
  *	@func: SDIO function to access
  *	@dst: buffer to store the data
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 2e13b94..e171e77 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -136,6 +136,18 @@
 
 	  If unsure, say N.
 
+config MMC_SDHCI_SPEAR
+	tristate "SDHCI support on ST SPEAr platform"
+	depends on MMC_SDHCI && PLAT_SPEAR
+	help
+	  This selects the Secure Digital Host Controller Interface (SDHCI)
+	  often referrered to as the HSMMC block in some of the ST SPEAR range
+	  of SoC
+
+	  If you have a controller with this interface, say Y or M here.
+
+	  If unsure, say N.
+
 config MMC_SDHCI_S3C_DMA
 	bool "DMA support on S3C SDHCI"
 	depends on MMC_SDHCI_S3C && EXPERIMENTAL
@@ -412,3 +424,11 @@
 	depends on SDH_BFIN
 	help
 	  If you say yes here SD-Cards may work on the EZkit.
+
+config MMC_SH_MMCIF
+	tristate "SuperH Internal MMCIF support"
+	depends on MMC_BLOCK && (SUPERH || ARCH_SHMOBILE)
+	help
+	  This selects the MMC Host Interface controler (MMCIF).
+
+	  This driver supports MMCIF in sh7724/sh7757/sh7372.
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index f480397..e30c2ee 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -14,6 +14,7 @@
 obj-$(CONFIG_MMC_SDHCI_PCI)	+= sdhci-pci.o
 obj-$(CONFIG_MMC_SDHCI_PLTFM)	+= sdhci-pltfm.o
 obj-$(CONFIG_MMC_SDHCI_S3C)	+= sdhci-s3c.o
+obj-$(CONFIG_MMC_SDHCI_SPEAR)	+= sdhci-spear.o
 obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
 obj-$(CONFIG_MMC_AU1X)		+= au1xmmc.o
 obj-$(CONFIG_MMC_OMAP)		+= omap.o
@@ -34,6 +35,7 @@
 obj-$(CONFIG_MMC_CB710)	+= cb710-mmc.o
 obj-$(CONFIG_MMC_VIA_SDMMC)	+= via-sdmmc.o
 obj-$(CONFIG_SDH_BFIN)		+= bfin_sdh.o
+obj-$(CONFIG_MMC_SH_MMCIF)	+= sh_mmcif.o
 
 obj-$(CONFIG_MMC_SDHCI_OF)	+= sdhci-of.o
 sdhci-of-y				:= sdhci-of-core.o
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index 336d9f5..5f3a599 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -1157,7 +1157,7 @@
 		enable_irq_wake(host->board->det_pin);
 
 	if (mmc)
-		ret = mmc_suspend_host(mmc, state);
+		ret = mmc_suspend_host(mmc);
 
 	return ret;
 }
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index df0e8a8..95ef864 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -173,6 +173,7 @@
  * @mmc: The mmc_host representing this slot.
  * @host: The MMC controller this slot is using.
  * @sdc_reg: Value of SDCR to be written before using this slot.
+ * @sdio_irq: SDIO irq mask for this slot.
  * @mrq: mmc_request currently being processed or waiting to be
  *	processed, or NULL when the slot is idle.
  * @queue_node: List node for placing this node in the @queue list of
@@ -191,6 +192,7 @@
 	struct atmel_mci	*host;
 
 	u32			sdc_reg;
+	u32			sdio_irq;
 
 	struct mmc_request	*mrq;
 	struct list_head	queue_node;
@@ -792,7 +794,7 @@
 	mci_writel(host, SDCR, slot->sdc_reg);
 
 	iflags = mci_readl(host, IMR);
-	if (iflags)
+	if (iflags & ~(MCI_SDIOIRQA | MCI_SDIOIRQB))
 		dev_warn(&slot->mmc->class_dev, "WARNING: IMR=0x%08x\n",
 				iflags);
 
@@ -952,10 +954,21 @@
 		if (mci_has_rwproof())
 			host->mode_reg |= (MCI_MR_WRPROOF | MCI_MR_RDPROOF);
 
-		if (list_empty(&host->queue))
+		if (atmci_is_mci2()) {
+			/* setup High Speed mode in relation with card capacity */
+			if (ios->timing == MMC_TIMING_SD_HS)
+				host->cfg_reg |= MCI_CFG_HSMODE;
+			else
+				host->cfg_reg &= ~MCI_CFG_HSMODE;
+		}
+
+		if (list_empty(&host->queue)) {
 			mci_writel(host, MR, host->mode_reg);
-		else
+			if (atmci_is_mci2())
+				mci_writel(host, CFG, host->cfg_reg);
+		} else {
 			host->need_clock_update = true;
+		}
 
 		spin_unlock_bh(&host->lock);
 	} else {
@@ -1030,11 +1043,23 @@
 	return present;
 }
 
+static void atmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+	struct atmel_mci_slot	*slot = mmc_priv(mmc);
+	struct atmel_mci	*host = slot->host;
+
+	if (enable)
+		mci_writel(host, IER, slot->sdio_irq);
+	else
+		mci_writel(host, IDR, slot->sdio_irq);
+}
+
 static const struct mmc_host_ops atmci_ops = {
 	.request	= atmci_request,
 	.set_ios	= atmci_set_ios,
 	.get_ro		= atmci_get_ro,
 	.get_cd		= atmci_get_cd,
+	.enable_sdio_irq = atmci_enable_sdio_irq,
 };
 
 /* Called with host->lock held */
@@ -1052,8 +1077,11 @@
 	 * necessary if set_ios() is called when a different slot is
 	 * busy transfering data.
 	 */
-	if (host->need_clock_update)
+	if (host->need_clock_update) {
 		mci_writel(host, MR, host->mode_reg);
+		if (atmci_is_mci2())
+			mci_writel(host, CFG, host->cfg_reg);
+	}
 
 	host->cur_slot->mrq = NULL;
 	host->mrq = NULL;
@@ -1483,6 +1511,19 @@
 	tasklet_schedule(&host->tasklet);
 }
 
+static void atmci_sdio_interrupt(struct atmel_mci *host, u32 status)
+{
+	int	i;
+
+	for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
+		struct atmel_mci_slot *slot = host->slot[i];
+		if (slot && (status & slot->sdio_irq)) {
+			mmc_signal_sdio_irq(slot->mmc);
+		}
+	}
+}
+
+
 static irqreturn_t atmci_interrupt(int irq, void *dev_id)
 {
 	struct atmel_mci	*host = dev_id;
@@ -1522,6 +1563,10 @@
 
 		if (pending & MCI_CMDRDY)
 			atmci_cmd_interrupt(host, status);
+
+		if (pending & (MCI_SDIOIRQA | MCI_SDIOIRQB))
+			atmci_sdio_interrupt(host, status);
+
 	} while (pass_count++ < 5);
 
 	return pass_count ? IRQ_HANDLED : IRQ_NONE;
@@ -1544,7 +1589,7 @@
 
 static int __init atmci_init_slot(struct atmel_mci *host,
 		struct mci_slot_pdata *slot_data, unsigned int id,
-		u32 sdc_reg)
+		u32 sdc_reg, u32 sdio_irq)
 {
 	struct mmc_host			*mmc;
 	struct atmel_mci_slot		*slot;
@@ -1560,11 +1605,16 @@
 	slot->wp_pin = slot_data->wp_pin;
 	slot->detect_is_active_high = slot_data->detect_is_active_high;
 	slot->sdc_reg = sdc_reg;
+	slot->sdio_irq = sdio_irq;
 
 	mmc->ops = &atmci_ops;
 	mmc->f_min = DIV_ROUND_UP(host->bus_hz, 512);
 	mmc->f_max = host->bus_hz / 2;
 	mmc->ocr_avail	= MMC_VDD_32_33 | MMC_VDD_33_34;
+	if (sdio_irq)
+		mmc->caps |= MMC_CAP_SDIO_IRQ;
+	if (atmci_is_mci2())
+		mmc->caps |= MMC_CAP_SD_HIGHSPEED;
 	if (slot_data->bus_width >= 4)
 		mmc->caps |= MMC_CAP_4_BIT_DATA;
 
@@ -1753,13 +1803,13 @@
 	ret = -ENODEV;
 	if (pdata->slot[0].bus_width) {
 		ret = atmci_init_slot(host, &pdata->slot[0],
-				0, MCI_SDCSEL_SLOT_A);
+				0, MCI_SDCSEL_SLOT_A, MCI_SDIOIRQA);
 		if (!ret)
 			nr_slots++;
 	}
 	if (pdata->slot[1].bus_width) {
 		ret = atmci_init_slot(host, &pdata->slot[1],
-				1, MCI_SDCSEL_SLOT_B);
+				1, MCI_SDCSEL_SLOT_B, MCI_SDIOIRQB);
 		if (!ret)
 			nr_slots++;
 	}
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index f583444..c8da5d3 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -1142,7 +1142,7 @@
 	struct au1xmmc_host *host = platform_get_drvdata(pdev);
 	int ret;
 
-	ret = mmc_suspend_host(host->mmc, state);
+	ret = mmc_suspend_host(host->mmc);
 	if (ret)
 		return ret;
 
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
index 6919e84..4b0e677 100644
--- a/drivers/mmc/host/bfin_sdh.c
+++ b/drivers/mmc/host/bfin_sdh.c
@@ -576,7 +576,7 @@
 	int ret = 0;
 
 	if (mmc)
-		ret = mmc_suspend_host(mmc, state);
+		ret = mmc_suspend_host(mmc);
 
 	bfin_write_SDH_PWR_CTL(bfin_read_SDH_PWR_CTL() & ~PWR_ON);
 	peripheral_free_list(drv_data->pin_req);
diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c
index 92a324f7..ca3bdc8 100644
--- a/drivers/mmc/host/cb710-mmc.c
+++ b/drivers/mmc/host/cb710-mmc.c
@@ -675,7 +675,7 @@
 	struct mmc_host *mmc = cb710_slot_to_mmc(slot);
 	int err;
 
-	err = mmc_suspend_host(mmc, state);
+	err = mmc_suspend_host(mmc);
 	if (err)
 		return err;
 
diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 3bd0ba2..33d9f1b 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -137,15 +137,15 @@
 
 /*
  * One scatterlist dma "segment" is at most MAX_CCNT rw_threshold units,
- * and we handle up to NR_SG segments.  MMC_BLOCK_BOUNCE kicks in only
+ * and we handle up to MAX_NR_SG segments.  MMC_BLOCK_BOUNCE kicks in only
  * for drivers with max_hw_segs == 1, making the segments bigger (64KB)
- * than the page or two that's otherwise typical.  NR_SG == 16 gives at
- * least the same throughput boost, using EDMA transfer linkage instead
- * of spending CPU time copying pages.
+ * than the page or two that's otherwise typical. nr_sg (passed from
+ * platform data) == 16 gives at least the same throughput boost, using
+ * EDMA transfer linkage instead of spending CPU time copying pages.
  */
 #define MAX_CCNT	((1 << 16) - 1)
 
-#define NR_SG		16
+#define MAX_NR_SG	16
 
 static unsigned rw_threshold = 32;
 module_param(rw_threshold, uint, S_IRUGO);
@@ -171,6 +171,7 @@
 #define DAVINCI_MMC_DATADIR_READ	1
 #define DAVINCI_MMC_DATADIR_WRITE	2
 	unsigned char data_dir;
+	unsigned char suspended;
 
 	/* buffer is used during PIO of one scatterlist segment, and
 	 * is updated along with buffer_bytes_left.  bytes_left applies
@@ -192,7 +193,7 @@
 	struct edmacc_param	tx_template;
 	struct edmacc_param	rx_template;
 	unsigned		n_link;
-	u32			links[NR_SG - 1];
+	u32			links[MAX_NR_SG - 1];
 
 	/* For PIO we walk scatterlists one segment at a time. */
 	unsigned int		sg_len;
@@ -202,6 +203,8 @@
 	u8 version;
 	/* for ns in one cycle calculation */
 	unsigned ns_in_one_cycle;
+	/* Number of sg segments */
+	u8 nr_sg;
 #ifdef CONFIG_CPU_FREQ
 	struct notifier_block	freq_transition;
 #endif
@@ -568,6 +571,7 @@
 
 static int __init davinci_acquire_dma_channels(struct mmc_davinci_host *host)
 {
+	u32 link_size;
 	int r, i;
 
 	/* Acquire master DMA write channel */
@@ -593,7 +597,8 @@
 	/* Allocate parameter RAM slots, which will later be bound to a
 	 * channel as needed to handle a scatterlist.
 	 */
-	for (i = 0; i < ARRAY_SIZE(host->links); i++) {
+	link_size = min_t(unsigned, host->nr_sg, ARRAY_SIZE(host->links));
+	for (i = 0; i < link_size; i++) {
 		r = edma_alloc_slot(EDMA_CTLR(host->txdma), EDMA_SLOT_ANY);
 		if (r < 0) {
 			dev_dbg(mmc_dev(host->mmc), "dma PaRAM alloc --> %d\n",
@@ -905,19 +910,26 @@
 	}
 }
 
-static void
-davinci_abort_data(struct mmc_davinci_host *host, struct mmc_data *data)
+static inline void mmc_davinci_reset_ctrl(struct mmc_davinci_host *host,
+								int val)
 {
 	u32 temp;
 
-	/* reset command and data state machines */
 	temp = readl(host->base + DAVINCI_MMCCTL);
-	writel(temp | MMCCTL_CMDRST | MMCCTL_DATRST,
-		host->base + DAVINCI_MMCCTL);
+	if (val)	/* reset */
+		temp |= MMCCTL_CMDRST | MMCCTL_DATRST;
+	else		/* enable */
+		temp &= ~(MMCCTL_CMDRST | MMCCTL_DATRST);
 
-	temp &= ~(MMCCTL_CMDRST | MMCCTL_DATRST);
-	udelay(10);
 	writel(temp, host->base + DAVINCI_MMCCTL);
+	udelay(10);
+}
+
+static void
+davinci_abort_data(struct mmc_davinci_host *host, struct mmc_data *data)
+{
+	mmc_davinci_reset_ctrl(host, 1);
+	mmc_davinci_reset_ctrl(host, 0);
 }
 
 static irqreturn_t mmc_davinci_irq(int irq, void *dev_id)
@@ -1121,15 +1133,8 @@
 #endif
 static void __init init_mmcsd_host(struct mmc_davinci_host *host)
 {
-	/* DAT line portion is diabled and in reset state */
-	writel(readl(host->base + DAVINCI_MMCCTL) | MMCCTL_DATRST,
-		host->base + DAVINCI_MMCCTL);
 
-	/* CMD line portion is diabled and in reset state */
-	writel(readl(host->base + DAVINCI_MMCCTL) | MMCCTL_CMDRST,
-		host->base + DAVINCI_MMCCTL);
-
-	udelay(10);
+	mmc_davinci_reset_ctrl(host, 1);
 
 	writel(0, host->base + DAVINCI_MMCCLK);
 	writel(MMCCLK_CLKEN, host->base + DAVINCI_MMCCLK);
@@ -1137,12 +1142,7 @@
 	writel(0x1FFF, host->base + DAVINCI_MMCTOR);
 	writel(0xFFFF, host->base + DAVINCI_MMCTOD);
 
-	writel(readl(host->base + DAVINCI_MMCCTL) & ~MMCCTL_DATRST,
-		host->base + DAVINCI_MMCCTL);
-	writel(readl(host->base + DAVINCI_MMCCTL) & ~MMCCTL_CMDRST,
-		host->base + DAVINCI_MMCCTL);
-
-	udelay(10);
+	mmc_davinci_reset_ctrl(host, 0);
 }
 
 static int __init davinci_mmcsd_probe(struct platform_device *pdev)
@@ -1202,6 +1202,12 @@
 
 	init_mmcsd_host(host);
 
+	if (pdata->nr_sg)
+		host->nr_sg = pdata->nr_sg - 1;
+
+	if (host->nr_sg > MAX_NR_SG || !host->nr_sg)
+		host->nr_sg = MAX_NR_SG;
+
 	host->use_dma = use_dma;
 	host->irq = irq;
 
@@ -1327,32 +1333,65 @@
 }
 
 #ifdef CONFIG_PM
-static int davinci_mmcsd_suspend(struct platform_device *pdev, pm_message_t msg)
+static int davinci_mmcsd_suspend(struct device *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
 	struct mmc_davinci_host *host = platform_get_drvdata(pdev);
+	int ret;
 
-	return mmc_suspend_host(host->mmc, msg);
+	mmc_host_enable(host->mmc);
+	ret = mmc_suspend_host(host->mmc);
+	if (!ret) {
+		writel(0, host->base + DAVINCI_MMCIM);
+		mmc_davinci_reset_ctrl(host, 1);
+		mmc_host_disable(host->mmc);
+		clk_disable(host->clk);
+		host->suspended = 1;
+	} else {
+		host->suspended = 0;
+		mmc_host_disable(host->mmc);
+	}
+
+	return ret;
 }
 
-static int davinci_mmcsd_resume(struct platform_device *pdev)
+static int davinci_mmcsd_resume(struct device *dev)
 {
+	struct platform_device *pdev = to_platform_device(dev);
 	struct mmc_davinci_host *host = platform_get_drvdata(pdev);
+	int ret;
 
-	return mmc_resume_host(host->mmc);
+	if (!host->suspended)
+		return 0;
+
+	clk_enable(host->clk);
+	mmc_host_enable(host->mmc);
+
+	mmc_davinci_reset_ctrl(host, 0);
+	ret = mmc_resume_host(host->mmc);
+	if (!ret)
+		host->suspended = 0;
+
+	return ret;
 }
+
+static const struct dev_pm_ops davinci_mmcsd_pm = {
+	.suspend        = davinci_mmcsd_suspend,
+	.resume         = davinci_mmcsd_resume,
+};
+
+#define davinci_mmcsd_pm_ops (&davinci_mmcsd_pm)
 #else
-#define davinci_mmcsd_suspend	NULL
-#define davinci_mmcsd_resume	NULL
+#define davinci_mmcsd_pm_ops NULL
 #endif
 
 static struct platform_driver davinci_mmcsd_driver = {
 	.driver		= {
 		.name	= "davinci_mmc",
 		.owner	= THIS_MODULE,
+		.pm	= davinci_mmcsd_pm_ops,
 	},
 	.remove		= __exit_p(davinci_mmcsd_remove),
-	.suspend	= davinci_mmcsd_suspend,
-	.resume		= davinci_mmcsd_resume,
 };
 
 static int __init davinci_mmcsd_init(void)
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c
index bf98d7c..9a68ff4 100644
--- a/drivers/mmc/host/imxmmc.c
+++ b/drivers/mmc/host/imxmmc.c
@@ -1115,7 +1115,7 @@
 	int ret = 0;
 
 	if (mmc)
-		ret = mmc_suspend_host(mmc, state);
+		ret = mmc_suspend_host(mmc);
 
 	return ret;
 }
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index ff115d9..4917af9 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -824,7 +824,7 @@
 	if (mmc) {
 		struct mmci_host *host = mmc_priv(mmc);
 
-		ret = mmc_suspend_host(mmc, state);
+		ret = mmc_suspend_host(mmc);
 		if (ret == 0)
 			writel(0, host->base + MMCIMASK0);
 	}
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 61f1d27..24e0945 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -1327,7 +1327,7 @@
 			disable_irq(host->stat_irq);
 
 		if (mmc->card && mmc->card->type != MMC_TYPE_SDIO)
-			rc = mmc_suspend_host(mmc, state);
+			rc = mmc_suspend_host(mmc);
 		if (!rc)
 			msmsdcc_writel(host, 0, MMCIMASK0);
 		if (host->clks_on)
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index 34e2348..366eefa 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -865,7 +865,7 @@
 	int ret = 0;
 
 	if (mmc)
-		ret = mmc_suspend_host(mmc, state);
+		ret = mmc_suspend_host(mmc);
 
 	return ret;
 }
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index ec18e3b..d9d4a72 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -932,7 +932,7 @@
 	int ret = 0;
 
 	if (mmc)
-		ret = mmc_suspend_host(mmc, state);
+		ret = mmc_suspend_host(mmc);
 
 	return ret;
 }
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 84d2804..2b28168 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -39,30 +39,30 @@
 #include <plat/fpga.h>
 
 #define	OMAP_MMC_REG_CMD	0x00
-#define	OMAP_MMC_REG_ARGL	0x04
-#define	OMAP_MMC_REG_ARGH	0x08
-#define	OMAP_MMC_REG_CON	0x0c
-#define	OMAP_MMC_REG_STAT	0x10
-#define	OMAP_MMC_REG_IE		0x14
-#define	OMAP_MMC_REG_CTO	0x18
-#define	OMAP_MMC_REG_DTO	0x1c
-#define	OMAP_MMC_REG_DATA	0x20
-#define	OMAP_MMC_REG_BLEN	0x24
-#define	OMAP_MMC_REG_NBLK	0x28
-#define	OMAP_MMC_REG_BUF	0x2c
-#define OMAP_MMC_REG_SDIO	0x34
-#define	OMAP_MMC_REG_REV	0x3c
-#define	OMAP_MMC_REG_RSP0	0x40
-#define	OMAP_MMC_REG_RSP1	0x44
-#define	OMAP_MMC_REG_RSP2	0x48
-#define	OMAP_MMC_REG_RSP3	0x4c
-#define	OMAP_MMC_REG_RSP4	0x50
-#define	OMAP_MMC_REG_RSP5	0x54
-#define	OMAP_MMC_REG_RSP6	0x58
-#define	OMAP_MMC_REG_RSP7	0x5c
-#define	OMAP_MMC_REG_IOSR	0x60
-#define	OMAP_MMC_REG_SYSC	0x64
-#define	OMAP_MMC_REG_SYSS	0x68
+#define	OMAP_MMC_REG_ARGL	0x01
+#define	OMAP_MMC_REG_ARGH	0x02
+#define	OMAP_MMC_REG_CON	0x03
+#define	OMAP_MMC_REG_STAT	0x04
+#define	OMAP_MMC_REG_IE		0x05
+#define	OMAP_MMC_REG_CTO	0x06
+#define	OMAP_MMC_REG_DTO	0x07
+#define	OMAP_MMC_REG_DATA	0x08
+#define	OMAP_MMC_REG_BLEN	0x09
+#define	OMAP_MMC_REG_NBLK	0x0a
+#define	OMAP_MMC_REG_BUF	0x0b
+#define	OMAP_MMC_REG_SDIO	0x0d
+#define	OMAP_MMC_REG_REV	0x0f
+#define	OMAP_MMC_REG_RSP0	0x10
+#define	OMAP_MMC_REG_RSP1	0x11
+#define	OMAP_MMC_REG_RSP2	0x12
+#define	OMAP_MMC_REG_RSP3	0x13
+#define	OMAP_MMC_REG_RSP4	0x14
+#define	OMAP_MMC_REG_RSP5	0x15
+#define	OMAP_MMC_REG_RSP6	0x16
+#define	OMAP_MMC_REG_RSP7	0x17
+#define	OMAP_MMC_REG_IOSR	0x18
+#define	OMAP_MMC_REG_SYSC	0x19
+#define	OMAP_MMC_REG_SYSS	0x1a
 
 #define	OMAP_MMC_STAT_CARD_ERR		(1 << 14)
 #define	OMAP_MMC_STAT_CARD_IRQ		(1 << 13)
@@ -78,8 +78,9 @@
 #define	OMAP_MMC_STAT_CARD_BUSY		(1 <<  2)
 #define	OMAP_MMC_STAT_END_OF_CMD	(1 <<  0)
 
-#define OMAP_MMC_READ(host, reg)	__raw_readw((host)->virt_base + OMAP_MMC_REG_##reg)
-#define OMAP_MMC_WRITE(host, reg, val)	__raw_writew((val), (host)->virt_base + OMAP_MMC_REG_##reg)
+#define OMAP_MMC_REG(host, reg)		(OMAP_MMC_REG_##reg << (host)->reg_shift)
+#define OMAP_MMC_READ(host, reg)	__raw_readw((host)->virt_base + OMAP_MMC_REG(host, reg))
+#define OMAP_MMC_WRITE(host, reg, val)	__raw_writew((val), (host)->virt_base + OMAP_MMC_REG(host, reg))
 
 /*
  * Command types
@@ -133,6 +134,7 @@
 	int			irq;
 	unsigned char		bus_mode;
 	unsigned char		hw_bus_mode;
+	unsigned int		reg_shift;
 
 	struct work_struct	cmd_abort_work;
 	unsigned		abort:1;
@@ -680,9 +682,9 @@
 	host->data->bytes_xfered += n;
 
 	if (write) {
-		__raw_writesw(host->virt_base + OMAP_MMC_REG_DATA, host->buffer, n);
+		__raw_writesw(host->virt_base + OMAP_MMC_REG(host, DATA), host->buffer, n);
 	} else {
-		__raw_readsw(host->virt_base + OMAP_MMC_REG_DATA, host->buffer, n);
+		__raw_readsw(host->virt_base + OMAP_MMC_REG(host, DATA), host->buffer, n);
 	}
 }
 
@@ -900,7 +902,7 @@
 	int dst_port = 0;
 	int sync_dev = 0;
 
-	data_addr = host->phys_base + OMAP_MMC_REG_DATA;
+	data_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
 	frame = data->blksz;
 	count = sg_dma_len(sg);
 
@@ -1493,6 +1495,8 @@
 		}
 	}
 
+	host->reg_shift = (cpu_is_omap7xx() ? 1 : 2);
+
 	return 0;
 
 err_plat_cleanup:
@@ -1557,7 +1561,7 @@
 		struct mmc_omap_slot *slot;
 
 		slot = host->slots[i];
-		ret = mmc_suspend_host(slot->mmc, mesg);
+		ret = mmc_suspend_host(slot->mmc);
 		if (ret < 0) {
 			while (--i >= 0) {
 				slot = host->slots[i];
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index e9caf69..b032828 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -157,12 +157,10 @@
 	 */
 	struct	regulator	*vcc;
 	struct	regulator	*vcc_aux;
-	struct	semaphore	sem;
 	struct	work_struct	mmc_carddetect_work;
 	void	__iomem		*base;
 	resource_size_t		mapbase;
 	spinlock_t		irq_lock; /* Prevent races with irq handler */
-	unsigned long		flags;
 	unsigned int		id;
 	unsigned int		dma_len;
 	unsigned int		dma_sg_idx;
@@ -183,6 +181,7 @@
 	int			protect_card;
 	int			reqs_blocked;
 	int			use_reg;
+	int			req_in_progress;
 
 	struct	omap_mmc_platform_data	*pdata;
 };
@@ -524,6 +523,27 @@
 		dev_dbg(mmc_dev(host->mmc), "MMC Clock is not stoped\n");
 }
 
+static void omap_hsmmc_enable_irq(struct omap_hsmmc_host *host)
+{
+	unsigned int irq_mask;
+
+	if (host->use_dma)
+		irq_mask = INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE);
+	else
+		irq_mask = INT_EN_MASK;
+
+	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+	OMAP_HSMMC_WRITE(host->base, ISE, irq_mask);
+	OMAP_HSMMC_WRITE(host->base, IE, irq_mask);
+}
+
+static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host)
+{
+	OMAP_HSMMC_WRITE(host->base, ISE, 0);
+	OMAP_HSMMC_WRITE(host->base, IE, 0);
+	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+}
+
 #ifdef CONFIG_PM
 
 /*
@@ -592,9 +612,7 @@
 		&& time_before(jiffies, timeout))
 		;
 
-	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
-	OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK);
-	OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
+	omap_hsmmc_disable_irq(host);
 
 	/* Do not initialize card-specific things if the power is off */
 	if (host->power_mode == MMC_POWER_OFF)
@@ -697,6 +715,8 @@
 		return;
 
 	disable_irq(host->irq);
+
+	OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
 	OMAP_HSMMC_WRITE(host->base, CON,
 		OMAP_HSMMC_READ(host->base, CON) | INIT_STREAM);
 	OMAP_HSMMC_WRITE(host->base, CMD, INIT_STREAM_CMD);
@@ -762,17 +782,7 @@
 		mmc_hostname(host->mmc), cmd->opcode, cmd->arg);
 	host->cmd = cmd;
 
-	/*
-	 * Clear status bits and enable interrupts
-	 */
-	OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
-	OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK);
-
-	if (host->use_dma)
-		OMAP_HSMMC_WRITE(host->base, IE,
-				 INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE));
-	else
-		OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
+	omap_hsmmc_enable_irq(host);
 
 	host->response_busy = 0;
 	if (cmd->flags & MMC_RSP_PRESENT) {
@@ -806,13 +816,7 @@
 	if (host->use_dma)
 		cmdreg |= DMA_EN;
 
-	/*
-	 * In an interrupt context (i.e. STOP command), the spinlock is unlocked
-	 * by the interrupt handler, otherwise (i.e. for a new request) it is
-	 * unlocked here.
-	 */
-	if (!in_interrupt())
-		spin_unlock_irqrestore(&host->irq_lock, host->flags);
+	host->req_in_progress = 1;
 
 	OMAP_HSMMC_WRITE(host->base, ARG, cmd->arg);
 	OMAP_HSMMC_WRITE(host->base, CMD, cmdreg);
@@ -827,6 +831,23 @@
 		return DMA_FROM_DEVICE;
 }
 
+static void omap_hsmmc_request_done(struct omap_hsmmc_host *host, struct mmc_request *mrq)
+{
+	int dma_ch;
+
+	spin_lock(&host->irq_lock);
+	host->req_in_progress = 0;
+	dma_ch = host->dma_ch;
+	spin_unlock(&host->irq_lock);
+
+	omap_hsmmc_disable_irq(host);
+	/* Do not complete the request if DMA is still in progress */
+	if (mrq->data && host->use_dma && dma_ch != -1)
+		return;
+	host->mrq = NULL;
+	mmc_request_done(host->mmc, mrq);
+}
+
 /*
  * Notify the transfer complete to MMC core
  */
@@ -843,25 +864,19 @@
 			return;
 		}
 
-		host->mrq = NULL;
-		mmc_request_done(host->mmc, mrq);
+		omap_hsmmc_request_done(host, mrq);
 		return;
 	}
 
 	host->data = NULL;
 
-	if (host->use_dma && host->dma_ch != -1)
-		dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_len,
-			omap_hsmmc_get_dma_dir(host, data));
-
 	if (!data->error)
 		data->bytes_xfered += data->blocks * (data->blksz);
 	else
 		data->bytes_xfered = 0;
 
 	if (!data->stop) {
-		host->mrq = NULL;
-		mmc_request_done(host->mmc, data->mrq);
+		omap_hsmmc_request_done(host, data->mrq);
 		return;
 	}
 	omap_hsmmc_start_command(host, data->stop, NULL);
@@ -887,10 +902,8 @@
 			cmd->resp[0] = OMAP_HSMMC_READ(host->base, RSP10);
 		}
 	}
-	if ((host->data == NULL && !host->response_busy) || cmd->error) {
-		host->mrq = NULL;
-		mmc_request_done(host->mmc, cmd->mrq);
-	}
+	if ((host->data == NULL && !host->response_busy) || cmd->error)
+		omap_hsmmc_request_done(host, cmd->mrq);
 }
 
 /*
@@ -898,14 +911,19 @@
  */
 static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno)
 {
+	int dma_ch;
+
 	host->data->error = errno;
 
-	if (host->use_dma && host->dma_ch != -1) {
+	spin_lock(&host->irq_lock);
+	dma_ch = host->dma_ch;
+	host->dma_ch = -1;
+	spin_unlock(&host->irq_lock);
+
+	if (host->use_dma && dma_ch != -1) {
 		dma_unmap_sg(mmc_dev(host->mmc), host->data->sg, host->dma_len,
 			omap_hsmmc_get_dma_dir(host, host->data));
-		omap_free_dma(host->dma_ch);
-		host->dma_ch = -1;
-		up(&host->sem);
+		omap_free_dma(dma_ch);
 	}
 	host->data = NULL;
 }
@@ -967,28 +985,21 @@
 			__func__);
 }
 
-/*
- * MMC controller IRQ handler
- */
-static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id)
+static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status)
 {
-	struct omap_hsmmc_host *host = dev_id;
 	struct mmc_data *data;
-	int end_cmd = 0, end_trans = 0, status;
+	int end_cmd = 0, end_trans = 0;
 
-	spin_lock(&host->irq_lock);
-
-	if (host->mrq == NULL) {
-		OMAP_HSMMC_WRITE(host->base, STAT,
-			OMAP_HSMMC_READ(host->base, STAT));
-		/* Flush posted write */
-		OMAP_HSMMC_READ(host->base, STAT);
-		spin_unlock(&host->irq_lock);
-		return IRQ_HANDLED;
+	if (!host->req_in_progress) {
+		do {
+			OMAP_HSMMC_WRITE(host->base, STAT, status);
+			/* Flush posted write */
+			status = OMAP_HSMMC_READ(host->base, STAT);
+		} while (status & INT_EN_MASK);
+		return;
 	}
 
 	data = host->data;
-	status = OMAP_HSMMC_READ(host->base, STAT);
 	dev_dbg(mmc_dev(host->mmc), "IRQ Status is %x\n", status);
 
 	if (status & ERR) {
@@ -1041,15 +1052,27 @@
 	}
 
 	OMAP_HSMMC_WRITE(host->base, STAT, status);
-	/* Flush posted write */
-	OMAP_HSMMC_READ(host->base, STAT);
 
 	if (end_cmd || ((status & CC) && host->cmd))
 		omap_hsmmc_cmd_done(host, host->cmd);
 	if ((end_trans || (status & TC)) && host->mrq)
 		omap_hsmmc_xfer_done(host, data);
+}
 
-	spin_unlock(&host->irq_lock);
+/*
+ * MMC controller IRQ handler
+ */
+static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id)
+{
+	struct omap_hsmmc_host *host = dev_id;
+	int status;
+
+	status = OMAP_HSMMC_READ(host->base, STAT);
+	do {
+		omap_hsmmc_do_irq(host, status);
+		/* Flush posted write */
+		status = OMAP_HSMMC_READ(host->base, STAT);
+	} while (status & INT_EN_MASK);
 
 	return IRQ_HANDLED;
 }
@@ -1244,31 +1267,47 @@
 /*
  * DMA call back function
  */
-static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *data)
+static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
 {
-	struct omap_hsmmc_host *host = data;
+	struct omap_hsmmc_host *host = cb_data;
+	struct mmc_data *data = host->mrq->data;
+	int dma_ch, req_in_progress;
 
 	if (ch_status & OMAP2_DMA_MISALIGNED_ERR_IRQ)
 		dev_dbg(mmc_dev(host->mmc), "MISALIGNED_ADRS_ERR\n");
 
-	if (host->dma_ch < 0)
+	spin_lock(&host->irq_lock);
+	if (host->dma_ch < 0) {
+		spin_unlock(&host->irq_lock);
 		return;
+	}
 
 	host->dma_sg_idx++;
 	if (host->dma_sg_idx < host->dma_len) {
 		/* Fire up the next transfer. */
-		omap_hsmmc_config_dma_params(host, host->data,
-					   host->data->sg + host->dma_sg_idx);
+		omap_hsmmc_config_dma_params(host, data,
+					   data->sg + host->dma_sg_idx);
+		spin_unlock(&host->irq_lock);
 		return;
 	}
 
-	omap_free_dma(host->dma_ch);
+	dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_len,
+		omap_hsmmc_get_dma_dir(host, data));
+
+	req_in_progress = host->req_in_progress;
+	dma_ch = host->dma_ch;
 	host->dma_ch = -1;
-	/*
-	 * DMA Callback: run in interrupt context.
-	 * mutex_unlock will throw a kernel warning if used.
-	 */
-	up(&host->sem);
+	spin_unlock(&host->irq_lock);
+
+	omap_free_dma(dma_ch);
+
+	/* If DMA has finished after TC, complete the request */
+	if (!req_in_progress) {
+		struct mmc_request *mrq = host->mrq;
+
+		host->mrq = NULL;
+		mmc_request_done(host->mmc, mrq);
+	}
 }
 
 /*
@@ -1277,7 +1316,7 @@
 static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
 					struct mmc_request *req)
 {
-	int dma_ch = 0, ret = 0, err = 1, i;
+	int dma_ch = 0, ret = 0, i;
 	struct mmc_data *data = req->data;
 
 	/* Sanity check: all the SG entries must be aligned by block size. */
@@ -1294,23 +1333,7 @@
 		 */
 		return -EINVAL;
 
-	/*
-	 * If for some reason the DMA transfer is still active,
-	 * we wait for timeout period and free the dma
-	 */
-	if (host->dma_ch != -1) {
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(100);
-		if (down_trylock(&host->sem)) {
-			omap_free_dma(host->dma_ch);
-			host->dma_ch = -1;
-			up(&host->sem);
-			return err;
-		}
-	} else {
-		if (down_trylock(&host->sem))
-			return err;
-	}
+	BUG_ON(host->dma_ch != -1);
 
 	ret = omap_request_dma(omap_hsmmc_get_dma_sync_dev(host, data),
 			       "MMC/SD", omap_hsmmc_dma_cb, host, &dma_ch);
@@ -1410,37 +1433,27 @@
 	struct omap_hsmmc_host *host = mmc_priv(mmc);
 	int err;
 
-	/*
-	 * Prevent races with the interrupt handler because of unexpected
-	 * interrupts, but not if we are already in interrupt context i.e.
-	 * retries.
-	 */
-	if (!in_interrupt()) {
-		spin_lock_irqsave(&host->irq_lock, host->flags);
-		/*
-		 * Protect the card from I/O if there is a possibility
-		 * it can be removed.
-		 */
-		if (host->protect_card) {
-			if (host->reqs_blocked < 3) {
-				/*
-				 * Ensure the controller is left in a consistent
-				 * state by resetting the command and data state
-				 * machines.
-				 */
-				omap_hsmmc_reset_controller_fsm(host, SRD);
-				omap_hsmmc_reset_controller_fsm(host, SRC);
-				host->reqs_blocked += 1;
-			}
-			req->cmd->error = -EBADF;
-			if (req->data)
-				req->data->error = -EBADF;
-			spin_unlock_irqrestore(&host->irq_lock, host->flags);
-			mmc_request_done(mmc, req);
-			return;
-		} else if (host->reqs_blocked)
-			host->reqs_blocked = 0;
-	}
+	BUG_ON(host->req_in_progress);
+	BUG_ON(host->dma_ch != -1);
+	if (host->protect_card) {
+		if (host->reqs_blocked < 3) {
+			/*
+			 * Ensure the controller is left in a consistent
+			 * state by resetting the command and data state
+			 * machines.
+			 */
+			omap_hsmmc_reset_controller_fsm(host, SRD);
+			omap_hsmmc_reset_controller_fsm(host, SRC);
+			host->reqs_blocked += 1;
+		}
+		req->cmd->error = -EBADF;
+		if (req->data)
+			req->data->error = -EBADF;
+		req->cmd->retries = 0;
+		mmc_request_done(mmc, req);
+		return;
+	} else if (host->reqs_blocked)
+		host->reqs_blocked = 0;
 	WARN_ON(host->mrq != NULL);
 	host->mrq = req;
 	err = omap_hsmmc_prepare_data(host, req);
@@ -1449,8 +1462,6 @@
 		if (req->data)
 			req->data->error = err;
 		host->mrq = NULL;
-		if (!in_interrupt())
-			spin_unlock_irqrestore(&host->irq_lock, host->flags);
 		mmc_request_done(mmc, req);
 		return;
 	}
@@ -2019,7 +2030,6 @@
 	mmc->f_min	= 400000;
 	mmc->f_max	= 52000000;
 
-	sema_init(&host->sem, 1);
 	spin_lock_init(&host->irq_lock);
 
 	host->iclk = clk_get(&pdev->dev, "ick");
@@ -2162,8 +2172,7 @@
 		}
 	}
 
-	OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK);
-	OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
+	omap_hsmmc_disable_irq(host);
 
 	mmc_host_lazy_disable(host->mmc);
 
@@ -2258,10 +2267,12 @@
 }
 
 #ifdef CONFIG_PM
-static int omap_hsmmc_suspend(struct platform_device *pdev, pm_message_t state)
+static int omap_hsmmc_suspend(struct device *dev)
 {
 	int ret = 0;
+	struct platform_device *pdev = to_platform_device(dev);
 	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
+	pm_message_t state = PMSG_SUSPEND; /* unused by MMC core */
 
 	if (host && host->suspended)
 		return 0;
@@ -2281,12 +2292,9 @@
 		}
 		cancel_work_sync(&host->mmc_carddetect_work);
 		mmc_host_enable(host->mmc);
-		ret = mmc_suspend_host(host->mmc, state);
+		ret = mmc_suspend_host(host->mmc);
 		if (ret == 0) {
-			OMAP_HSMMC_WRITE(host->base, ISE, 0);
-			OMAP_HSMMC_WRITE(host->base, IE, 0);
-
-
+			omap_hsmmc_disable_irq(host);
 			OMAP_HSMMC_WRITE(host->base, HCTL,
 				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
 			mmc_host_disable(host->mmc);
@@ -2310,9 +2318,10 @@
 }
 
 /* Routine to resume the MMC device */
-static int omap_hsmmc_resume(struct platform_device *pdev)
+static int omap_hsmmc_resume(struct device *dev)
 {
 	int ret = 0;
+	struct platform_device *pdev = to_platform_device(dev);
 	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
 
 	if (host && !host->suspended)
@@ -2363,13 +2372,17 @@
 #define omap_hsmmc_resume		NULL
 #endif
 
-static struct platform_driver omap_hsmmc_driver = {
-	.remove		= omap_hsmmc_remove,
+static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
 	.suspend	= omap_hsmmc_suspend,
 	.resume		= omap_hsmmc_resume,
+};
+
+static struct platform_driver omap_hsmmc_driver = {
+	.remove		= omap_hsmmc_remove,
 	.driver		= {
 		.name = DRIVER_NAME,
 		.owner = THIS_MODULE,
+		.pm = &omap_hsmmc_dev_pm_ops,
 	},
 };
 
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index e4f00e7..0a4e43f 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -813,7 +813,7 @@
 	int ret = 0;
 
 	if (mmc)
-		ret = mmc_suspend_host(mmc, PMSG_SUSPEND);
+		ret = mmc_suspend_host(mmc);
 
 	return ret;
 }
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 2fdf768..2e16e0a 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -1881,9 +1881,8 @@
 static int s3cmci_suspend(struct device *dev)
 {
 	struct mmc_host *mmc = platform_get_drvdata(to_platform_device(dev));
-	struct pm_message event = { PM_EVENT_SUSPEND };
 
-	return mmc_suspend_host(mmc, event);
+	return mmc_suspend_host(mmc);
 }
 
 static int s3cmci_resume(struct device *dev)
diff --git a/drivers/mmc/host/sdhci-of-core.c b/drivers/mmc/host/sdhci-of-core.c
index 7802a54..a2e9820 100644
--- a/drivers/mmc/host/sdhci-of-core.c
+++ b/drivers/mmc/host/sdhci-of-core.c
@@ -89,7 +89,7 @@
 {
 	struct sdhci_host *host = dev_get_drvdata(&ofdev->dev);
 
-	return mmc_suspend_host(host->mmc, state);
+	return mmc_suspend_host(host->mmc);
 }
 
 static int sdhci_of_resume(struct of_device *ofdev)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index d5b11a1..c8623de 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -129,12 +129,12 @@
 		  SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET |
 		  SDHCI_QUIRK_NO_CARD_NO_RESET,
 	.ops = {
-		.readl = sdhci_be32bs_readl,
-		.readw = esdhc_readw,
-		.readb = sdhci_be32bs_readb,
-		.writel = sdhci_be32bs_writel,
-		.writew = esdhc_writew,
-		.writeb = esdhc_writeb,
+		.read_l = sdhci_be32bs_readl,
+		.read_w = esdhc_readw,
+		.read_b = sdhci_be32bs_readb,
+		.write_l = sdhci_be32bs_writel,
+		.write_w = esdhc_writew,
+		.write_b = esdhc_writeb,
 		.set_clock = esdhc_set_clock,
 		.enable_dma = esdhc_enable_dma,
 		.get_max_clock = esdhc_get_max_clock,
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index 35117f3..68ddb75 100644
--- a/drivers/mmc/host/sdhci-of-hlwd.c
+++ b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -55,11 +55,11 @@
 	.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
 		  SDHCI_QUIRK_32BIT_DMA_SIZE,
 	.ops = {
-		.readl = sdhci_be32bs_readl,
-		.readw = sdhci_be32bs_readw,
-		.readb = sdhci_be32bs_readb,
-		.writel = sdhci_hlwd_writel,
-		.writew = sdhci_hlwd_writew,
-		.writeb = sdhci_hlwd_writeb,
+		.read_l = sdhci_be32bs_readl,
+		.read_w = sdhci_be32bs_readw,
+		.read_b = sdhci_be32bs_readb,
+		.write_l = sdhci_hlwd_writel,
+		.write_w = sdhci_hlwd_writew,
+		.write_b = sdhci_hlwd_writeb,
 	},
 };
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 6701af6..65483fd 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -628,7 +628,7 @@
 	host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
 	if (IS_ERR(host)) {
 		dev_err(&pdev->dev, "cannot allocate host\n");
-		return ERR_PTR(PTR_ERR(host));
+		return ERR_CAST(host);
 	}
 
 	slot = sdhci_priv(host);
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 297f40a..b6ee0d7 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -29,6 +29,7 @@
 #include <linux/mmc/host.h>
 
 #include <linux/io.h>
+#include <linux/sdhci-pltfm.h>
 
 #include "sdhci.h"
 
@@ -49,19 +50,18 @@
 
 static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
 {
+	struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
 	struct sdhci_host *host;
 	struct resource *iomem;
 	int ret;
 
-	BUG_ON(pdev == NULL);
-
 	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!iomem) {
 		ret = -ENOMEM;
 		goto err;
 	}
 
-	if (resource_size(iomem) != 0x100)
+	if (resource_size(iomem) < 0x100)
 		dev_err(&pdev->dev, "Invalid iomem size. You may "
 			"experience problems.\n");
 
@@ -76,7 +76,12 @@
 	}
 
 	host->hw_name = "platform";
-	host->ops = &sdhci_pltfm_ops;
+	if (pdata && pdata->ops)
+		host->ops = pdata->ops;
+	else
+		host->ops = &sdhci_pltfm_ops;
+	if (pdata)
+		host->quirks = pdata->quirks;
 	host->irq = platform_get_irq(pdev, 0);
 
 	if (!request_mem_region(iomem->start, resource_size(iomem),
@@ -93,6 +98,12 @@
 		goto err_remap;
 	}
 
+	if (pdata && pdata->init) {
+		ret = pdata->init(host);
+		if (ret)
+			goto err_plat_init;
+	}
+
 	ret = sdhci_add_host(host);
 	if (ret)
 		goto err_add_host;
@@ -102,6 +113,9 @@
 	return 0;
 
 err_add_host:
+	if (pdata && pdata->exit)
+		pdata->exit(host);
+err_plat_init:
 	iounmap(host->ioaddr);
 err_remap:
 	release_mem_region(iomem->start, resource_size(iomem));
@@ -114,6 +128,7 @@
 
 static int __devexit sdhci_pltfm_remove(struct platform_device *pdev)
 {
+	struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	int dead;
@@ -125,6 +140,8 @@
 		dead = 1;
 
 	sdhci_remove_host(host, dead);
+	if (pdata && pdata->exit)
+		pdata->exit(host);
 	iounmap(host->ioaddr);
 	release_mem_region(iomem->start, resource_size(iomem));
 	sdhci_free_host(host);
@@ -165,4 +182,3 @@
 MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:sdhci");
-
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 2136794..af21792 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -317,12 +317,7 @@
 	host->irq = irq;
 
 	/* Setup quirks for the controller */
-
-	/* Currently with ADMA enabled we are getting some length
-	 * interrupts that are not being dealt with, do disable
-	 * ADMA until this is sorted out. */
-	host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
-	host->quirks |= SDHCI_QUIRK_32BIT_ADMA_SIZE;
+	host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
 
 #ifndef CONFIG_MMC_SDHCI_S3C_DMA
 
@@ -330,9 +325,6 @@
 	 * support as well. */
 	host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
 
-	/* PIO currently has problems with multi-block IO */
-	host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
-
 #endif /* CONFIG_MMC_SDHCI_S3C_DMA */
 
 	/* It seems we do not get an DATA transfer complete on non-busy
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
new file mode 100644
index 0000000..d70c54c
--- /dev/null
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -0,0 +1,298 @@
+/*
+ * drivers/mmc/host/sdhci-spear.c
+ *
+ * Support of SDHCI platform devices for spear soc family
+ *
+ * Copyright (C) 2010 ST Microelectronics
+ * Viresh Kumar<viresh.kumar@st.com>
+ *
+ * Inspired by sdhci-pltfm.c
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/highmem.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/sdhci-spear.h>
+#include <linux/io.h>
+#include "sdhci.h"
+
+struct spear_sdhci {
+	struct clk *clk;
+	struct sdhci_plat_data *data;
+};
+
+/* sdhci ops */
+static struct sdhci_ops sdhci_pltfm_ops = {
+	/* Nothing to do for now. */
+};
+
+/* gpio card detection interrupt handler */
+static irqreturn_t sdhci_gpio_irq(int irq, void *dev_id)
+{
+	struct platform_device *pdev = dev_id;
+	struct sdhci_host *host = platform_get_drvdata(pdev);
+	struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev);
+	unsigned long gpio_irq_type;
+	int val;
+
+	val = gpio_get_value(sdhci->data->card_int_gpio);
+
+	/* val == 1 -> card removed, val == 0 -> card inserted */
+	/* if card removed - set irq for low level, else vice versa */
+	gpio_irq_type = val ? IRQF_TRIGGER_LOW : IRQF_TRIGGER_HIGH;
+	set_irq_type(irq, gpio_irq_type);
+
+	if (sdhci->data->card_power_gpio >= 0) {
+		if (!sdhci->data->power_always_enb) {
+			/* if card inserted, give power, otherwise remove it */
+			val = sdhci->data->power_active_high ? !val : val ;
+			gpio_set_value(sdhci->data->card_power_gpio, val);
+		}
+	}
+
+	/* inform sdhci driver about card insertion/removal */
+	tasklet_schedule(&host->card_tasklet);
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit sdhci_probe(struct platform_device *pdev)
+{
+	struct sdhci_host *host;
+	struct resource *iomem;
+	struct spear_sdhci *sdhci;
+	int ret;
+
+	BUG_ON(pdev == NULL);
+
+	iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!iomem) {
+		ret = -ENOMEM;
+		dev_dbg(&pdev->dev, "memory resource not defined\n");
+		goto err;
+	}
+
+	if (!request_mem_region(iomem->start, resource_size(iomem),
+				"spear-sdhci")) {
+		ret = -EBUSY;
+		dev_dbg(&pdev->dev, "cannot request region\n");
+		goto err;
+	}
+
+	sdhci = kzalloc(sizeof(*sdhci), GFP_KERNEL);
+	if (!sdhci) {
+		ret = -ENOMEM;
+		dev_dbg(&pdev->dev, "cannot allocate memory for sdhci\n");
+		goto err_kzalloc;
+	}
+
+	/* clk enable */
+	sdhci->clk = clk_get(&pdev->dev, NULL);
+	if (IS_ERR(sdhci->clk)) {
+		ret = PTR_ERR(sdhci->clk);
+		dev_dbg(&pdev->dev, "Error getting clock\n");
+		goto err_clk_get;
+	}
+
+	ret = clk_enable(sdhci->clk);
+	if (ret) {
+		dev_dbg(&pdev->dev, "Error enabling clock\n");
+		goto err_clk_enb;
+	}
+
+	/* overwrite platform_data */
+	sdhci->data = dev_get_platdata(&pdev->dev);
+	pdev->dev.platform_data = sdhci;
+
+	if (pdev->dev.parent)
+		host = sdhci_alloc_host(pdev->dev.parent, 0);
+	else
+		host = sdhci_alloc_host(&pdev->dev, 0);
+
+	if (IS_ERR(host)) {
+		ret = PTR_ERR(host);
+		dev_dbg(&pdev->dev, "error allocating host\n");
+		goto err_alloc_host;
+	}
+
+	host->hw_name = "sdhci";
+	host->ops = &sdhci_pltfm_ops;
+	host->irq = platform_get_irq(pdev, 0);
+	host->quirks = SDHCI_QUIRK_BROKEN_ADMA;
+
+	host->ioaddr = ioremap(iomem->start, resource_size(iomem));
+	if (!host->ioaddr) {
+		ret = -ENOMEM;
+		dev_dbg(&pdev->dev, "failed to remap registers\n");
+		goto err_ioremap;
+	}
+
+	ret = sdhci_add_host(host);
+	if (ret) {
+		dev_dbg(&pdev->dev, "error adding host\n");
+		goto err_add_host;
+	}
+
+	platform_set_drvdata(pdev, host);
+
+	/*
+	 * It is optional to use GPIOs for sdhci Power control & sdhci card
+	 * interrupt detection. If sdhci->data is NULL, then use original sdhci
+	 * lines otherwise GPIO lines.
+	 * If GPIO is selected for power control, then power should be disabled
+	 * after card removal and should be enabled when card insertion
+	 * interrupt occurs
+	 */
+	if (!sdhci->data)
+		return 0;
+
+	if (sdhci->data->card_power_gpio >= 0) {
+		int val = 0;
+
+		ret = gpio_request(sdhci->data->card_power_gpio, "sdhci");
+		if (ret < 0) {
+			dev_dbg(&pdev->dev, "gpio request fail: %d\n",
+					sdhci->data->card_power_gpio);
+			goto err_pgpio_request;
+		}
+
+		if (sdhci->data->power_always_enb)
+			val = sdhci->data->power_active_high;
+		else
+			val = !sdhci->data->power_active_high;
+
+		ret = gpio_direction_output(sdhci->data->card_power_gpio, val);
+		if (ret) {
+			dev_dbg(&pdev->dev, "gpio set direction fail: %d\n",
+					sdhci->data->card_power_gpio);
+			goto err_pgpio_direction;
+		}
+
+		gpio_set_value(sdhci->data->card_power_gpio, 1);
+	}
+
+	if (sdhci->data->card_int_gpio >= 0) {
+		ret = gpio_request(sdhci->data->card_int_gpio, "sdhci");
+		if (ret < 0) {
+			dev_dbg(&pdev->dev, "gpio request fail: %d\n",
+					sdhci->data->card_int_gpio);
+			goto err_igpio_request;
+		}
+
+		ret = gpio_direction_input(sdhci->data->card_int_gpio);
+		if (ret) {
+			dev_dbg(&pdev->dev, "gpio set direction fail: %d\n",
+					sdhci->data->card_int_gpio);
+			goto err_igpio_direction;
+		}
+		ret = request_irq(gpio_to_irq(sdhci->data->card_int_gpio),
+				sdhci_gpio_irq, IRQF_TRIGGER_LOW,
+				mmc_hostname(host->mmc), pdev);
+		if (ret) {
+			dev_dbg(&pdev->dev, "gpio request irq fail: %d\n",
+					sdhci->data->card_int_gpio);
+			goto err_igpio_request_irq;
+		}
+
+	}
+
+	return 0;
+
+err_igpio_request_irq:
+err_igpio_direction:
+	if (sdhci->data->card_int_gpio >= 0)
+		gpio_free(sdhci->data->card_int_gpio);
+err_igpio_request:
+err_pgpio_direction:
+	if (sdhci->data->card_power_gpio >= 0)
+		gpio_free(sdhci->data->card_power_gpio);
+err_pgpio_request:
+	platform_set_drvdata(pdev, NULL);
+	sdhci_remove_host(host, 1);
+err_add_host:
+	iounmap(host->ioaddr);
+err_ioremap:
+	sdhci_free_host(host);
+err_alloc_host:
+	clk_disable(sdhci->clk);
+err_clk_enb:
+	clk_put(sdhci->clk);
+err_clk_get:
+	kfree(sdhci);
+err_kzalloc:
+	release_mem_region(iomem->start, resource_size(iomem));
+err:
+	dev_err(&pdev->dev, "spear-sdhci probe failed: %d\n", ret);
+	return ret;
+}
+
+static int __devexit sdhci_remove(struct platform_device *pdev)
+{
+	struct sdhci_host *host = platform_get_drvdata(pdev);
+	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev);
+	int dead;
+	u32 scratch;
+
+	if (sdhci->data) {
+		if (sdhci->data->card_int_gpio >= 0) {
+			free_irq(gpio_to_irq(sdhci->data->card_int_gpio), pdev);
+			gpio_free(sdhci->data->card_int_gpio);
+		}
+
+		if (sdhci->data->card_power_gpio >= 0)
+			gpio_free(sdhci->data->card_power_gpio);
+	}
+
+	platform_set_drvdata(pdev, NULL);
+	dead = 0;
+	scratch = readl(host->ioaddr + SDHCI_INT_STATUS);
+	if (scratch == (u32)-1)
+		dead = 1;
+
+	sdhci_remove_host(host, dead);
+	iounmap(host->ioaddr);
+	sdhci_free_host(host);
+	clk_disable(sdhci->clk);
+	clk_put(sdhci->clk);
+	kfree(sdhci);
+	if (iomem)
+		release_mem_region(iomem->start, resource_size(iomem));
+
+	return 0;
+}
+
+static struct platform_driver sdhci_driver = {
+	.driver = {
+		.name	= "sdhci",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= sdhci_probe,
+	.remove		= __devexit_p(sdhci_remove),
+};
+
+static int __init sdhci_init(void)
+{
+	return platform_driver_register(&sdhci_driver);
+}
+module_init(sdhci_init);
+
+static void __exit sdhci_exit(void)
+{
+	platform_driver_unregister(&sdhci_driver);
+}
+module_exit(sdhci_exit);
+
+MODULE_DESCRIPTION("SPEAr Secure Digital Host Controller Interface driver");
+MODULE_AUTHOR("Viresh Kumar <viresh.kumar@st.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 9d4fdfa..c6d1bd8 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -496,12 +496,22 @@
 		WARN_ON((desc - host->adma_desc) > (128 * 2 + 1) * 4);
 	}
 
-	/*
-	 * Add a terminating entry.
-	 */
+	if (host->quirks & SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC) {
+		/*
+		* Mark the last descriptor as the terminating descriptor
+		*/
+		if (desc != host->adma_desc) {
+			desc -= 8;
+			desc[0] |= 0x2; /* end */
+		}
+	} else {
+		/*
+		* Add a terminating entry.
+		*/
 
-	/* nop, end, valid */
-	sdhci_set_adma_desc(desc, 0, 0, 0x3);
+		/* nop, end, valid */
+		sdhci_set_adma_desc(desc, 0, 0, 0x3);
+	}
 
 	/*
 	 * Resync align buffer as we might have changed it.
@@ -1587,7 +1597,7 @@
 
 	sdhci_disable_card_detection(host);
 
-	ret = mmc_suspend_host(host->mmc, state);
+	ret = mmc_suspend_host(host->mmc);
 	if (ret)
 		return ret;
 
@@ -1744,7 +1754,8 @@
 	host->max_clk =
 		(caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
 	host->max_clk *= 1000000;
-	if (host->max_clk == 0) {
+	if (host->max_clk == 0 || host->quirks &
+			SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN) {
 		if (!host->ops->get_max_clock) {
 			printk(KERN_ERR
 			       "%s: Hardware doesn't specify base clock "
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 842f46f..c846813 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -127,7 +127,7 @@
 #define  SDHCI_INT_DATA_MASK	(SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
 		SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
 		SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
-		SDHCI_INT_DATA_END_BIT | SDHCI_ADMA_ERROR)
+		SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR)
 #define SDHCI_INT_ALL_MASK	((unsigned int)-1)
 
 #define SDHCI_ACMD12_ERR	0x3C
@@ -236,6 +236,10 @@
 #define SDHCI_QUIRK_DELAY_AFTER_POWER			(1<<23)
 /* Controller uses SDCLK instead of TMCLK for data timeouts */
 #define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK		(1<<24)
+/* Controller reports wrong base clock capability */
+#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN		(1<<25)
+/* Controller cannot support End Attribute in NOP ADMA descriptor */
+#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC		(1<<26)
 
 	int			irq;		/* Device IRQ */
 	void __iomem *		ioaddr;		/* Mapped address */
@@ -294,12 +298,12 @@
 
 struct sdhci_ops {
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
-	u32		(*readl)(struct sdhci_host *host, int reg);
-	u16		(*readw)(struct sdhci_host *host, int reg);
-	u8		(*readb)(struct sdhci_host *host, int reg);
-	void		(*writel)(struct sdhci_host *host, u32 val, int reg);
-	void		(*writew)(struct sdhci_host *host, u16 val, int reg);
-	void		(*writeb)(struct sdhci_host *host, u8 val, int reg);
+	u32		(*read_l)(struct sdhci_host *host, int reg);
+	u16		(*read_w)(struct sdhci_host *host, int reg);
+	u8		(*read_b)(struct sdhci_host *host, int reg);
+	void		(*write_l)(struct sdhci_host *host, u32 val, int reg);
+	void		(*write_w)(struct sdhci_host *host, u16 val, int reg);
+	void		(*write_b)(struct sdhci_host *host, u8 val, int reg);
 #endif
 
 	void	(*set_clock)(struct sdhci_host *host, unsigned int clock);
@@ -314,48 +318,48 @@
 
 static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
 {
-	if (unlikely(host->ops->writel))
-		host->ops->writel(host, val, reg);
+	if (unlikely(host->ops->write_l))
+		host->ops->write_l(host, val, reg);
 	else
 		writel(val, host->ioaddr + reg);
 }
 
 static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
 {
-	if (unlikely(host->ops->writew))
-		host->ops->writew(host, val, reg);
+	if (unlikely(host->ops->write_w))
+		host->ops->write_w(host, val, reg);
 	else
 		writew(val, host->ioaddr + reg);
 }
 
 static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
 {
-	if (unlikely(host->ops->writeb))
-		host->ops->writeb(host, val, reg);
+	if (unlikely(host->ops->write_b))
+		host->ops->write_b(host, val, reg);
 	else
 		writeb(val, host->ioaddr + reg);
 }
 
 static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
 {
-	if (unlikely(host->ops->readl))
-		return host->ops->readl(host, reg);
+	if (unlikely(host->ops->read_l))
+		return host->ops->read_l(host, reg);
 	else
 		return readl(host->ioaddr + reg);
 }
 
 static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
 {
-	if (unlikely(host->ops->readw))
-		return host->ops->readw(host, reg);
+	if (unlikely(host->ops->read_w))
+		return host->ops->read_w(host, reg);
 	else
 		return readw(host->ioaddr + reg);
 }
 
 static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
 {
-	if (unlikely(host->ops->readb))
-		return host->ops->readb(host, reg);
+	if (unlikely(host->ops->read_b))
+		return host->ops->read_b(host, reg);
 	else
 		return readb(host->ioaddr + reg);
 }
diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c
index cb41e9c..e7507af 100644
--- a/drivers/mmc/host/sdricoh_cs.c
+++ b/drivers/mmc/host/sdricoh_cs.c
@@ -519,7 +519,7 @@
 {
 	struct mmc_host *mmc = link->priv;
 	dev_dbg(&link->dev, "suspend\n");
-	mmc_suspend_host(mmc, PMSG_SUSPEND);
+	mmc_suspend_host(mmc);
 	return 0;
 }
 
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
new file mode 100644
index 0000000..eb97830
--- /dev/null
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -0,0 +1,965 @@
+/*
+ * MMCIF eMMC driver.
+ *
+ * Copyright (C) 2010 Renesas Solutions Corp.
+ * Yusuke Goda <yusuke.goda.sx@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ *
+ * TODO
+ *  1. DMA
+ *  2. Power management
+ *  3. Handle MMC errors better
+ *
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sdio.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/mmc/sh_mmcif.h>
+
+#define DRIVER_NAME	"sh_mmcif"
+#define DRIVER_VERSION	"2010-04-28"
+
+#define MMCIF_CE_CMD_SET	0x00000000
+#define MMCIF_CE_ARG		0x00000008
+#define MMCIF_CE_ARG_CMD12	0x0000000C
+#define MMCIF_CE_CMD_CTRL	0x00000010
+#define MMCIF_CE_BLOCK_SET	0x00000014
+#define MMCIF_CE_CLK_CTRL	0x00000018
+#define MMCIF_CE_BUF_ACC	0x0000001C
+#define MMCIF_CE_RESP3		0x00000020
+#define MMCIF_CE_RESP2		0x00000024
+#define MMCIF_CE_RESP1		0x00000028
+#define MMCIF_CE_RESP0		0x0000002C
+#define MMCIF_CE_RESP_CMD12	0x00000030
+#define MMCIF_CE_DATA		0x00000034
+#define MMCIF_CE_INT		0x00000040
+#define MMCIF_CE_INT_MASK	0x00000044
+#define MMCIF_CE_HOST_STS1	0x00000048
+#define MMCIF_CE_HOST_STS2	0x0000004C
+#define MMCIF_CE_VERSION	0x0000007C
+
+/* CE_CMD_SET */
+#define CMD_MASK		0x3f000000
+#define CMD_SET_RTYP_NO		((0 << 23) | (0 << 22))
+#define CMD_SET_RTYP_6B		((0 << 23) | (1 << 22)) /* R1/R1b/R3/R4/R5 */
+#define CMD_SET_RTYP_17B	((1 << 23) | (0 << 22)) /* R2 */
+#define CMD_SET_RBSY		(1 << 21) /* R1b */
+#define CMD_SET_CCSEN		(1 << 20)
+#define CMD_SET_WDAT		(1 << 19) /* 1: on data, 0: no data */
+#define CMD_SET_DWEN		(1 << 18) /* 1: write, 0: read */
+#define CMD_SET_CMLTE		(1 << 17) /* 1: multi block trans, 0: single */
+#define CMD_SET_CMD12EN		(1 << 16) /* 1: CMD12 auto issue */
+#define CMD_SET_RIDXC_INDEX	((0 << 15) | (0 << 14)) /* index check */
+#define CMD_SET_RIDXC_BITS	((0 << 15) | (1 << 14)) /* check bits check */
+#define CMD_SET_RIDXC_NO	((1 << 15) | (0 << 14)) /* no check */
+#define CMD_SET_CRC7C		((0 << 13) | (0 << 12)) /* CRC7 check*/
+#define CMD_SET_CRC7C_BITS	((0 << 13) | (1 << 12)) /* check bits check*/
+#define CMD_SET_CRC7C_INTERNAL	((1 << 13) | (0 << 12)) /* internal CRC7 check*/
+#define CMD_SET_CRC16C		(1 << 10) /* 0: CRC16 check*/
+#define CMD_SET_CRCSTE		(1 << 8) /* 1: not receive CRC status */
+#define CMD_SET_TBIT		(1 << 7) /* 1: tran mission bit "Low" */
+#define CMD_SET_OPDM		(1 << 6) /* 1: open/drain */
+#define CMD_SET_CCSH		(1 << 5)
+#define CMD_SET_DATW_1		((0 << 1) | (0 << 0)) /* 1bit */
+#define CMD_SET_DATW_4		((0 << 1) | (1 << 0)) /* 4bit */
+#define CMD_SET_DATW_8		((1 << 1) | (0 << 0)) /* 8bit */
+
+/* CE_CMD_CTRL */
+#define CMD_CTRL_BREAK		(1 << 0)
+
+/* CE_BLOCK_SET */
+#define BLOCK_SIZE_MASK		0x0000ffff
+
+/* CE_CLK_CTRL */
+#define CLK_ENABLE		(1 << 24) /* 1: output mmc clock */
+#define CLK_CLEAR		((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
+#define CLK_SUP_PCLK		((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
+#define SRSPTO_256		((1 << 13) | (0 << 12)) /* resp timeout */
+#define SRBSYTO_29		((1 << 11) | (1 << 10) |	\
+				 (1 << 9) | (1 << 8)) /* resp busy timeout */
+#define SRWDTO_29		((1 << 7) | (1 << 6) |		\
+				 (1 << 5) | (1 << 4)) /* read/write timeout */
+#define SCCSTO_29		((1 << 3) | (1 << 2) |		\
+				 (1 << 1) | (1 << 0)) /* ccs timeout */
+
+/* CE_BUF_ACC */
+#define BUF_ACC_DMAWEN		(1 << 25)
+#define BUF_ACC_DMAREN		(1 << 24)
+#define BUF_ACC_BUSW_32		(0 << 17)
+#define BUF_ACC_BUSW_16		(1 << 17)
+#define BUF_ACC_ATYP		(1 << 16)
+
+/* CE_INT */
+#define INT_CCSDE		(1 << 29)
+#define INT_CMD12DRE		(1 << 26)
+#define INT_CMD12RBE		(1 << 25)
+#define INT_CMD12CRE		(1 << 24)
+#define INT_DTRANE		(1 << 23)
+#define INT_BUFRE		(1 << 22)
+#define INT_BUFWEN		(1 << 21)
+#define INT_BUFREN		(1 << 20)
+#define INT_CCSRCV		(1 << 19)
+#define INT_RBSYE		(1 << 17)
+#define INT_CRSPE		(1 << 16)
+#define INT_CMDVIO		(1 << 15)
+#define INT_BUFVIO		(1 << 14)
+#define INT_WDATERR		(1 << 11)
+#define INT_RDATERR		(1 << 10)
+#define INT_RIDXERR		(1 << 9)
+#define INT_RSPERR		(1 << 8)
+#define INT_CCSTO		(1 << 5)
+#define INT_CRCSTO		(1 << 4)
+#define INT_WDATTO		(1 << 3)
+#define INT_RDATTO		(1 << 2)
+#define INT_RBSYTO		(1 << 1)
+#define INT_RSPTO		(1 << 0)
+#define INT_ERR_STS		(INT_CMDVIO | INT_BUFVIO | INT_WDATERR |  \
+				 INT_RDATERR | INT_RIDXERR | INT_RSPERR | \
+				 INT_CCSTO | INT_CRCSTO | INT_WDATTO |	  \
+				 INT_RDATTO | INT_RBSYTO | INT_RSPTO)
+
+/* CE_INT_MASK */
+#define MASK_ALL		0x00000000
+#define MASK_MCCSDE		(1 << 29)
+#define MASK_MCMD12DRE		(1 << 26)
+#define MASK_MCMD12RBE		(1 << 25)
+#define MASK_MCMD12CRE		(1 << 24)
+#define MASK_MDTRANE		(1 << 23)
+#define MASK_MBUFRE		(1 << 22)
+#define MASK_MBUFWEN		(1 << 21)
+#define MASK_MBUFREN		(1 << 20)
+#define MASK_MCCSRCV		(1 << 19)
+#define MASK_MRBSYE		(1 << 17)
+#define MASK_MCRSPE		(1 << 16)
+#define MASK_MCMDVIO		(1 << 15)
+#define MASK_MBUFVIO		(1 << 14)
+#define MASK_MWDATERR		(1 << 11)
+#define MASK_MRDATERR		(1 << 10)
+#define MASK_MRIDXERR		(1 << 9)
+#define MASK_MRSPERR		(1 << 8)
+#define MASK_MCCSTO		(1 << 5)
+#define MASK_MCRCSTO		(1 << 4)
+#define MASK_MWDATTO		(1 << 3)
+#define MASK_MRDATTO		(1 << 2)
+#define MASK_MRBSYTO		(1 << 1)
+#define MASK_MRSPTO		(1 << 0)
+
+/* CE_HOST_STS1 */
+#define STS1_CMDSEQ		(1 << 31)
+
+/* CE_HOST_STS2 */
+#define STS2_CRCSTE		(1 << 31)
+#define STS2_CRC16E		(1 << 30)
+#define STS2_AC12CRCE		(1 << 29)
+#define STS2_RSPCRC7E		(1 << 28)
+#define STS2_CRCSTEBE		(1 << 27)
+#define STS2_RDATEBE		(1 << 26)
+#define STS2_AC12REBE		(1 << 25)
+#define STS2_RSPEBE		(1 << 24)
+#define STS2_AC12IDXE		(1 << 23)
+#define STS2_RSPIDXE		(1 << 22)
+#define STS2_CCSTO		(1 << 15)
+#define STS2_RDATTO		(1 << 14)
+#define STS2_DATBSYTO		(1 << 13)
+#define STS2_CRCSTTO		(1 << 12)
+#define STS2_AC12BSYTO		(1 << 11)
+#define STS2_RSPBSYTO		(1 << 10)
+#define STS2_AC12RSPTO		(1 << 9)
+#define STS2_RSPTO		(1 << 8)
+#define STS2_CRC_ERR		(STS2_CRCSTE | STS2_CRC16E |		\
+				 STS2_AC12CRCE | STS2_RSPCRC7E | STS2_CRCSTEBE)
+#define STS2_TIMEOUT_ERR	(STS2_CCSTO | STS2_RDATTO |		\
+				 STS2_DATBSYTO | STS2_CRCSTTO |		\
+				 STS2_AC12BSYTO | STS2_RSPBSYTO |	\
+				 STS2_AC12RSPTO | STS2_RSPTO)
+
+/* CE_VERSION */
+#define SOFT_RST_ON		(1 << 31)
+#define SOFT_RST_OFF		(0 << 31)
+
+#define CLKDEV_EMMC_DATA	52000000 /* 52MHz */
+#define CLKDEV_MMC_DATA		20000000 /* 20MHz */
+#define CLKDEV_INIT		400000   /* 400 KHz */
+
+struct sh_mmcif_host {
+	struct mmc_host *mmc;
+	struct mmc_data *data;
+	struct mmc_command *cmd;
+	struct platform_device *pd;
+	struct clk *hclk;
+	unsigned int clk;
+	int bus_width;
+	u16 wait_int;
+	u16 sd_error;
+	long timeout;
+	void __iomem *addr;
+	wait_queue_head_t intr_wait;
+};
+
+static inline u32 sh_mmcif_readl(struct sh_mmcif_host *host, unsigned int reg)
+{
+	return readl(host->addr + reg);
+}
+
+static inline void sh_mmcif_writel(struct sh_mmcif_host *host,
+					unsigned int reg, u32 val)
+{
+	writel(val, host->addr + reg);
+}
+
+static inline void sh_mmcif_bitset(struct sh_mmcif_host *host,
+					unsigned int reg, u32 val)
+{
+	writel(val | sh_mmcif_readl(host, reg), host->addr + reg);
+}
+
+static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host,
+					unsigned int reg, u32 val)
+{
+	writel(~val & sh_mmcif_readl(host, reg), host->addr + reg);
+}
+
+
+static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
+{
+	struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
+
+	sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
+	sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR);
+
+	if (!clk)
+		return;
+	if (p->sup_pclk && clk == host->clk)
+		sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK);
+	else
+		sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR &
+			(ilog2(__rounddown_pow_of_two(host->clk / clk)) << 16));
+
+	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
+}
+
+static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
+{
+	u32 tmp;
+
+	tmp = 0x010f0000 & sh_mmcif_readl(host, MMCIF_CE_CLK_CTRL);
+
+	sh_mmcif_writel(host, MMCIF_CE_VERSION, SOFT_RST_ON);
+	sh_mmcif_writel(host, MMCIF_CE_VERSION, SOFT_RST_OFF);
+	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, tmp |
+		SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | SCCSTO_29);
+	/* byte swap on */
+	sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP);
+}
+
+static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
+{
+	u32 state1, state2;
+	int ret, timeout = 10000000;
+
+	host->sd_error = 0;
+	host->wait_int = 0;
+
+	state1 = sh_mmcif_readl(host, MMCIF_CE_HOST_STS1);
+	state2 = sh_mmcif_readl(host, MMCIF_CE_HOST_STS2);
+	pr_debug("%s: ERR HOST_STS1 = %08x\n", \
+			DRIVER_NAME, sh_mmcif_readl(host, MMCIF_CE_HOST_STS1));
+	pr_debug("%s: ERR HOST_STS2 = %08x\n", \
+			DRIVER_NAME, sh_mmcif_readl(host, MMCIF_CE_HOST_STS2));
+
+	if (state1 & STS1_CMDSEQ) {
+		sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, CMD_CTRL_BREAK);
+		sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, ~CMD_CTRL_BREAK);
+		while (1) {
+			timeout--;
+			if (timeout < 0) {
+				pr_err(DRIVER_NAME": Forceed end of " \
+					"command sequence timeout err\n");
+				return -EIO;
+			}
+			if (!(sh_mmcif_readl(host, MMCIF_CE_HOST_STS1)
+								& STS1_CMDSEQ))
+				break;
+			mdelay(1);
+		}
+		sh_mmcif_sync_reset(host);
+		pr_debug(DRIVER_NAME": Forced end of command sequence\n");
+		return -EIO;
+	}
+
+	if (state2 & STS2_CRC_ERR) {
+		pr_debug(DRIVER_NAME": Happened CRC error\n");
+		ret = -EIO;
+	} else if (state2 & STS2_TIMEOUT_ERR) {
+		pr_debug(DRIVER_NAME": Happened Timeout error\n");
+		ret = -ETIMEDOUT;
+	} else {
+		pr_debug(DRIVER_NAME": Happened End/Index error\n");
+		ret = -EIO;
+	}
+	return ret;
+}
+
+static int sh_mmcif_single_read(struct sh_mmcif_host *host,
+					struct mmc_request *mrq)
+{
+	struct mmc_data *data = mrq->data;
+	long time;
+	u32 blocksize, i, *p = sg_virt(data->sg);
+
+	host->wait_int = 0;
+
+	/* buf read enable */
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
+	time = wait_event_interruptible_timeout(host->intr_wait,
+			host->wait_int == 1 ||
+			host->sd_error == 1, host->timeout);
+	if (host->wait_int != 1 && (time == 0 || host->sd_error != 0))
+		return sh_mmcif_error_manage(host);
+
+	host->wait_int = 0;
+	blocksize = (BLOCK_SIZE_MASK &
+			sh_mmcif_readl(host, MMCIF_CE_BLOCK_SET)) + 3;
+	for (i = 0; i < blocksize / 4; i++)
+		*p++ = sh_mmcif_readl(host, MMCIF_CE_DATA);
+
+	/* buffer read end */
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
+	time = wait_event_interruptible_timeout(host->intr_wait,
+			host->wait_int == 1 ||
+			host->sd_error == 1, host->timeout);
+	if (host->wait_int != 1 && (time == 0 || host->sd_error != 0))
+		return sh_mmcif_error_manage(host);
+
+	host->wait_int = 0;
+	return 0;
+}
+
+static int sh_mmcif_multi_read(struct sh_mmcif_host *host,
+					struct mmc_request *mrq)
+{
+	struct mmc_data *data = mrq->data;
+	long time;
+	u32 blocksize, i, j, sec, *p;
+
+	blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host, MMCIF_CE_BLOCK_SET);
+	for (j = 0; j < data->sg_len; j++) {
+		p = sg_virt(data->sg);
+		host->wait_int = 0;
+		for (sec = 0; sec < data->sg->length / blocksize; sec++) {
+			sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
+			/* buf read enable */
+			time = wait_event_interruptible_timeout(host->intr_wait,
+				host->wait_int == 1 ||
+				host->sd_error == 1, host->timeout);
+
+			if (host->wait_int != 1 &&
+			    (time == 0 || host->sd_error != 0))
+				return sh_mmcif_error_manage(host);
+
+			host->wait_int = 0;
+			for (i = 0; i < blocksize / 4; i++)
+				*p++ = sh_mmcif_readl(host, MMCIF_CE_DATA);
+		}
+		if (j < data->sg_len - 1)
+			data->sg++;
+	}
+	return 0;
+}
+
+static int sh_mmcif_single_write(struct sh_mmcif_host *host,
+					struct mmc_request *mrq)
+{
+	struct mmc_data *data = mrq->data;
+	long time;
+	u32 blocksize, i, *p = sg_virt(data->sg);
+
+	host->wait_int = 0;
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+
+	/* buf write enable */
+	time = wait_event_interruptible_timeout(host->intr_wait,
+			host->wait_int == 1 ||
+			host->sd_error == 1, host->timeout);
+	if (host->wait_int != 1 && (time == 0 || host->sd_error != 0))
+		return sh_mmcif_error_manage(host);
+
+	host->wait_int = 0;
+	blocksize = (BLOCK_SIZE_MASK &
+			sh_mmcif_readl(host, MMCIF_CE_BLOCK_SET)) + 3;
+	for (i = 0; i < blocksize / 4; i++)
+		sh_mmcif_writel(host, MMCIF_CE_DATA, *p++);
+
+	/* buffer write end */
+	sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
+
+	time = wait_event_interruptible_timeout(host->intr_wait,
+			host->wait_int == 1 ||
+			host->sd_error == 1, host->timeout);
+	if (host->wait_int != 1 && (time == 0 || host->sd_error != 0))
+		return sh_mmcif_error_manage(host);
+
+	host->wait_int = 0;
+	return 0;
+}
+
+static int sh_mmcif_multi_write(struct sh_mmcif_host *host,
+						struct mmc_request *mrq)
+{
+	struct mmc_data *data = mrq->data;
+	long time;
+	u32 i, sec, j, blocksize, *p;
+
+	blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host, MMCIF_CE_BLOCK_SET);
+
+	for (j = 0; j < data->sg_len; j++) {
+		p = sg_virt(data->sg);
+		host->wait_int = 0;
+		for (sec = 0; sec < data->sg->length / blocksize; sec++) {
+			sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+			/* buf write enable*/
+			time = wait_event_interruptible_timeout(host->intr_wait,
+				host->wait_int == 1 ||
+				host->sd_error == 1, host->timeout);
+
+			if (host->wait_int != 1 &&
+			    (time == 0 || host->sd_error != 0))
+				return sh_mmcif_error_manage(host);
+
+			host->wait_int = 0;
+			for (i = 0; i < blocksize / 4; i++)
+				sh_mmcif_writel(host, MMCIF_CE_DATA, *p++);
+		}
+		if (j < data->sg_len - 1)
+			data->sg++;
+	}
+	return 0;
+}
+
+static void sh_mmcif_get_response(struct sh_mmcif_host *host,
+						struct mmc_command *cmd)
+{
+	if (cmd->flags & MMC_RSP_136) {
+		cmd->resp[0] = sh_mmcif_readl(host, MMCIF_CE_RESP3);
+		cmd->resp[1] = sh_mmcif_readl(host, MMCIF_CE_RESP2);
+		cmd->resp[2] = sh_mmcif_readl(host, MMCIF_CE_RESP1);
+		cmd->resp[3] = sh_mmcif_readl(host, MMCIF_CE_RESP0);
+	} else
+		cmd->resp[0] = sh_mmcif_readl(host, MMCIF_CE_RESP0);
+}
+
+static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host,
+						struct mmc_command *cmd)
+{
+	cmd->resp[0] = sh_mmcif_readl(host, MMCIF_CE_RESP_CMD12);
+}
+
+static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
+		struct mmc_request *mrq, struct mmc_command *cmd, u32 opc)
+{
+	u32 tmp = 0;
+
+	/* Response Type check */
+	switch (mmc_resp_type(cmd)) {
+	case MMC_RSP_NONE:
+		tmp |= CMD_SET_RTYP_NO;
+		break;
+	case MMC_RSP_R1:
+	case MMC_RSP_R1B:
+	case MMC_RSP_R3:
+		tmp |= CMD_SET_RTYP_6B;
+		break;
+	case MMC_RSP_R2:
+		tmp |= CMD_SET_RTYP_17B;
+		break;
+	default:
+		pr_err(DRIVER_NAME": Not support type response.\n");
+		break;
+	}
+	switch (opc) {
+	/* RBSY */
+	case MMC_SWITCH:
+	case MMC_STOP_TRANSMISSION:
+	case MMC_SET_WRITE_PROT:
+	case MMC_CLR_WRITE_PROT:
+	case MMC_ERASE:
+	case MMC_GEN_CMD:
+		tmp |= CMD_SET_RBSY;
+		break;
+	}
+	/* WDAT / DATW */
+	if (host->data) {
+		tmp |= CMD_SET_WDAT;
+		switch (host->bus_width) {
+		case MMC_BUS_WIDTH_1:
+			tmp |= CMD_SET_DATW_1;
+			break;
+		case MMC_BUS_WIDTH_4:
+			tmp |= CMD_SET_DATW_4;
+			break;
+		case MMC_BUS_WIDTH_8:
+			tmp |= CMD_SET_DATW_8;
+			break;
+		default:
+			pr_err(DRIVER_NAME": Not support bus width.\n");
+			break;
+		}
+	}
+	/* DWEN */
+	if (opc == MMC_WRITE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK)
+		tmp |= CMD_SET_DWEN;
+	/* CMLTE/CMD12EN */
+	if (opc == MMC_READ_MULTIPLE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) {
+		tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN;
+		sh_mmcif_bitset(host, MMCIF_CE_BLOCK_SET,
+					mrq->data->blocks << 16);
+	}
+	/* RIDXC[1:0] check bits */
+	if (opc == MMC_SEND_OP_COND || opc == MMC_ALL_SEND_CID ||
+	    opc == MMC_SEND_CSD || opc == MMC_SEND_CID)
+		tmp |= CMD_SET_RIDXC_BITS;
+	/* RCRC7C[1:0] check bits */
+	if (opc == MMC_SEND_OP_COND)
+		tmp |= CMD_SET_CRC7C_BITS;
+	/* RCRC7C[1:0] internal CRC7 */
+	if (opc == MMC_ALL_SEND_CID ||
+		opc == MMC_SEND_CSD || opc == MMC_SEND_CID)
+		tmp |= CMD_SET_CRC7C_INTERNAL;
+
+	return opc = ((opc << 24) | tmp);
+}
+
+static u32 sh_mmcif_data_trans(struct sh_mmcif_host *host,
+				struct mmc_request *mrq, u32 opc)
+{
+	u32 ret;
+
+	switch (opc) {
+	case MMC_READ_MULTIPLE_BLOCK:
+		ret = sh_mmcif_multi_read(host, mrq);
+		break;
+	case MMC_WRITE_MULTIPLE_BLOCK:
+		ret = sh_mmcif_multi_write(host, mrq);
+		break;
+	case MMC_WRITE_BLOCK:
+		ret = sh_mmcif_single_write(host, mrq);
+		break;
+	case MMC_READ_SINGLE_BLOCK:
+	case MMC_SEND_EXT_CSD:
+		ret = sh_mmcif_single_read(host, mrq);
+		break;
+	default:
+		pr_err(DRIVER_NAME": NOT SUPPORT CMD = d'%08d\n", opc);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
+			struct mmc_request *mrq, struct mmc_command *cmd)
+{
+	long time;
+	int ret = 0, mask = 0;
+	u32 opc = cmd->opcode;
+
+	host->cmd = cmd;
+
+	switch (opc) {
+	/* respons busy check */
+	case MMC_SWITCH:
+	case MMC_STOP_TRANSMISSION:
+	case MMC_SET_WRITE_PROT:
+	case MMC_CLR_WRITE_PROT:
+	case MMC_ERASE:
+	case MMC_GEN_CMD:
+		mask = MASK_MRBSYE;
+		break;
+	default:
+		mask = MASK_MCRSPE;
+		break;
+	}
+	mask |=	MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR |
+		MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR |
+		MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO |
+		MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO;
+
+	if (host->data) {
+		sh_mmcif_writel(host, MMCIF_CE_BLOCK_SET, 0);
+		sh_mmcif_writel(host, MMCIF_CE_BLOCK_SET, mrq->data->blksz);
+	}
+	opc = sh_mmcif_set_cmd(host, mrq, cmd, opc);
+
+	sh_mmcif_writel(host, MMCIF_CE_INT, 0xD80430C0);
+	sh_mmcif_writel(host, MMCIF_CE_INT_MASK, mask);
+	/* set arg */
+	sh_mmcif_writel(host, MMCIF_CE_ARG, cmd->arg);
+	host->wait_int = 0;
+	/* set cmd */
+	sh_mmcif_writel(host, MMCIF_CE_CMD_SET, opc);
+
+	time = wait_event_interruptible_timeout(host->intr_wait,
+		host->wait_int == 1 || host->sd_error == 1, host->timeout);
+	if (host->wait_int != 1 && time == 0) {
+		cmd->error = sh_mmcif_error_manage(host);
+		return;
+	}
+	if (host->sd_error) {
+		switch (cmd->opcode) {
+		case MMC_ALL_SEND_CID:
+		case MMC_SELECT_CARD:
+		case MMC_APP_CMD:
+			cmd->error = -ETIMEDOUT;
+			break;
+		default:
+			pr_debug("%s: Cmd(d'%d) err\n",
+					DRIVER_NAME, cmd->opcode);
+			cmd->error = sh_mmcif_error_manage(host);
+			break;
+		}
+		host->sd_error = 0;
+		host->wait_int = 0;
+		return;
+	}
+	if (!(cmd->flags & MMC_RSP_PRESENT)) {
+		cmd->error = ret;
+		host->wait_int = 0;
+		return;
+	}
+	if (host->wait_int == 1) {
+		sh_mmcif_get_response(host, cmd);
+		host->wait_int = 0;
+	}
+	if (host->data) {
+		ret = sh_mmcif_data_trans(host, mrq, cmd->opcode);
+		if (ret < 0)
+			mrq->data->bytes_xfered = 0;
+		else
+			mrq->data->bytes_xfered =
+				mrq->data->blocks * mrq->data->blksz;
+	}
+	cmd->error = ret;
+}
+
+static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host,
+		struct mmc_request *mrq, struct mmc_command *cmd)
+{
+	long time;
+
+	if (mrq->cmd->opcode == MMC_READ_MULTIPLE_BLOCK)
+		sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
+	else if (mrq->cmd->opcode == MMC_WRITE_MULTIPLE_BLOCK)
+		sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
+	else {
+		pr_err(DRIVER_NAME": not support stop cmd\n");
+		cmd->error = sh_mmcif_error_manage(host);
+		return;
+	}
+
+	time = wait_event_interruptible_timeout(host->intr_wait,
+			host->wait_int == 1 ||
+			host->sd_error == 1, host->timeout);
+	if (host->wait_int != 1 && (time == 0 || host->sd_error != 0)) {
+		cmd->error = sh_mmcif_error_manage(host);
+		return;
+	}
+	sh_mmcif_get_cmd12response(host, cmd);
+	host->wait_int = 0;
+	cmd->error = 0;
+}
+
+static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+	struct sh_mmcif_host *host = mmc_priv(mmc);
+
+	switch (mrq->cmd->opcode) {
+	/* MMCIF does not support SD/SDIO command */
+	case SD_IO_SEND_OP_COND:
+	case MMC_APP_CMD:
+		mrq->cmd->error = -ETIMEDOUT;
+		mmc_request_done(mmc, mrq);
+		return;
+	case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
+		if (!mrq->data) {
+			/* send_if_cond cmd (not support) */
+			mrq->cmd->error = -ETIMEDOUT;
+			mmc_request_done(mmc, mrq);
+			return;
+		}
+		break;
+	default:
+		break;
+	}
+	host->data = mrq->data;
+	sh_mmcif_start_cmd(host, mrq, mrq->cmd);
+	host->data = NULL;
+
+	if (mrq->cmd->error != 0) {
+		mmc_request_done(mmc, mrq);
+		return;
+	}
+	if (mrq->stop)
+		sh_mmcif_stop_cmd(host, mrq, mrq->stop);
+	mmc_request_done(mmc, mrq);
+}
+
+static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+	struct sh_mmcif_host *host = mmc_priv(mmc);
+	struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;
+
+	if (ios->power_mode == MMC_POWER_OFF) {
+		/* clock stop */
+		sh_mmcif_clock_control(host, 0);
+		if (p->down_pwr)
+			p->down_pwr(host->pd);
+		return;
+	} else if (ios->power_mode == MMC_POWER_UP) {
+		if (p->set_pwr)
+			p->set_pwr(host->pd, ios->power_mode);
+	}
+
+	if (ios->clock)
+		sh_mmcif_clock_control(host, ios->clock);
+
+	host->bus_width = ios->bus_width;
+}
+
+static struct mmc_host_ops sh_mmcif_ops = {
+	.request	= sh_mmcif_request,
+	.set_ios	= sh_mmcif_set_ios,
+};
+
+static void sh_mmcif_detect(struct mmc_host *mmc)
+{
+	mmc_detect_change(mmc, 0);
+}
+
+static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
+{
+	struct sh_mmcif_host *host = dev_id;
+	u32 state = 0;
+	int err = 0;
+
+	state = sh_mmcif_readl(host, MMCIF_CE_INT);
+
+	if (state & INT_RBSYE) {
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~(INT_RBSYE | INT_CRSPE));
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE);
+	} else if (state & INT_CRSPE) {
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~INT_CRSPE);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE);
+	} else if (state & INT_BUFREN) {
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~INT_BUFREN);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
+	} else if (state & INT_BUFWEN) {
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~INT_BUFWEN);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
+	} else if (state & INT_CMD12DRE) {
+		sh_mmcif_writel(host, MMCIF_CE_INT,
+			~(INT_CMD12DRE | INT_CMD12RBE |
+			  INT_CMD12CRE | INT_BUFRE));
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
+	} else if (state & INT_BUFRE) {
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~INT_BUFRE);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
+	} else if (state & INT_DTRANE) {
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~INT_DTRANE);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
+	} else if (state & INT_CMD12RBE) {
+		sh_mmcif_writel(host, MMCIF_CE_INT,
+				~(INT_CMD12RBE | INT_CMD12CRE));
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
+	} else if (state & INT_ERR_STS) {
+		/* err interrupts */
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~state);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
+		err = 1;
+	} else {
+		pr_debug("%s: Not support int\n", DRIVER_NAME);
+		sh_mmcif_writel(host, MMCIF_CE_INT, ~state);
+		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
+		err = 1;
+	}
+	if (err) {
+		host->sd_error = 1;
+		pr_debug("%s: int err state = %08x\n", DRIVER_NAME, state);
+	}
+	host->wait_int = 1;
+	wake_up(&host->intr_wait);
+
+	return IRQ_HANDLED;
+}
+
+static int __devinit sh_mmcif_probe(struct platform_device *pdev)
+{
+	int ret = 0, irq[2];
+	struct mmc_host *mmc;
+	struct sh_mmcif_host *host = NULL;
+	struct sh_mmcif_plat_data *pd = NULL;
+	struct resource *res;
+	void __iomem *reg;
+	char clk_name[8];
+
+	irq[0] = platform_get_irq(pdev, 0);
+	irq[1] = platform_get_irq(pdev, 1);
+	if (irq[0] < 0 || irq[1] < 0) {
+		pr_err(DRIVER_NAME": Get irq error\n");
+		return -ENXIO;
+	}
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "platform_get_resource error.\n");
+		return -ENXIO;
+	}
+	reg = ioremap(res->start, resource_size(res));
+	if (!reg) {
+		dev_err(&pdev->dev, "ioremap error.\n");
+		return -ENOMEM;
+	}
+	pd = (struct sh_mmcif_plat_data *)(pdev->dev.platform_data);
+	if (!pd) {
+		dev_err(&pdev->dev, "sh_mmcif plat data error.\n");
+		ret = -ENXIO;
+		goto clean_up;
+	}
+	mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev);
+	if (!mmc) {
+		ret = -ENOMEM;
+		goto clean_up;
+	}
+	host		= mmc_priv(mmc);
+	host->mmc	= mmc;
+	host->addr	= reg;
+	host->timeout	= 1000;
+
+	snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
+	host->hclk = clk_get(&pdev->dev, clk_name);
+	if (IS_ERR(host->hclk)) {
+		dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
+		ret = PTR_ERR(host->hclk);
+		goto clean_up1;
+	}
+	clk_enable(host->hclk);
+	host->clk = clk_get_rate(host->hclk);
+	host->pd = pdev;
+
+	init_waitqueue_head(&host->intr_wait);
+
+	mmc->ops = &sh_mmcif_ops;
+	mmc->f_max = host->clk;
+	/* close to 400KHz */
+	if (mmc->f_max < 51200000)
+		mmc->f_min = mmc->f_max / 128;
+	else if (mmc->f_max < 102400000)
+		mmc->f_min = mmc->f_max / 256;
+	else
+		mmc->f_min = mmc->f_max / 512;
+	if (pd->ocr)
+		mmc->ocr_avail = pd->ocr;
+	mmc->caps = MMC_CAP_MMC_HIGHSPEED;
+	if (pd->caps)
+		mmc->caps |= pd->caps;
+	mmc->max_phys_segs = 128;
+	mmc->max_hw_segs = 128;
+	mmc->max_blk_size = 512;
+	mmc->max_blk_count = 65535;
+	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+	mmc->max_seg_size = mmc->max_req_size;
+
+	sh_mmcif_sync_reset(host);
+	platform_set_drvdata(pdev, host);
+	mmc_add_host(mmc);
+
+	ret = request_irq(irq[0], sh_mmcif_intr, 0, "sh_mmc:error", host);
+	if (ret) {
+		pr_err(DRIVER_NAME": request_irq error (sh_mmc:error)\n");
+		goto clean_up2;
+	}
+	ret = request_irq(irq[1], sh_mmcif_intr, 0, "sh_mmc:int", host);
+	if (ret) {
+		free_irq(irq[0], host);
+		pr_err(DRIVER_NAME": request_irq error (sh_mmc:int)\n");
+		goto clean_up2;
+	}
+
+	sh_mmcif_writel(host, MMCIF_CE_INT_MASK, MASK_ALL);
+	sh_mmcif_detect(host->mmc);
+
+	pr_info("%s: driver version %s\n", DRIVER_NAME, DRIVER_VERSION);
+	pr_debug("%s: chip ver H'%04x\n", DRIVER_NAME,
+			sh_mmcif_readl(host, MMCIF_CE_VERSION) & 0x0000ffff);
+	return ret;
+
+clean_up2:
+	clk_disable(host->hclk);
+clean_up1:
+	mmc_free_host(mmc);
+clean_up:
+	if (reg)
+		iounmap(reg);
+	return ret;
+}
+
+static int __devexit sh_mmcif_remove(struct platform_device *pdev)
+{
+	struct sh_mmcif_host *host = platform_get_drvdata(pdev);
+	int irq[2];
+
+	sh_mmcif_writel(host, MMCIF_CE_INT_MASK, MASK_ALL);
+
+	irq[0] = platform_get_irq(pdev, 0);
+	irq[1] = platform_get_irq(pdev, 1);
+
+	if (host->addr)
+		iounmap(host->addr);
+
+	platform_set_drvdata(pdev, NULL);
+	mmc_remove_host(host->mmc);
+
+	free_irq(irq[0], host);
+	free_irq(irq[1], host);
+
+	clk_disable(host->hclk);
+	mmc_free_host(host->mmc);
+
+	return 0;
+}
+
+static struct platform_driver sh_mmcif_driver = {
+	.probe		= sh_mmcif_probe,
+	.remove		= sh_mmcif_remove,
+	.driver		= {
+		.name	= DRIVER_NAME,
+	},
+};
+
+static int __init sh_mmcif_init(void)
+{
+	return platform_driver_register(&sh_mmcif_driver);
+}
+
+static void __exit sh_mmcif_exit(void)
+{
+	platform_driver_unregister(&sh_mmcif_driver);
+}
+
+module_init(sh_mmcif_init);
+module_exit(sh_mmcif_exit);
+
+
+MODULE_DESCRIPTION("SuperH on-chip MMC/eMMC interface driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS(DRIVER_NAME);
+MODULE_AUTHOR("Yusuke Goda <yusuke.goda.sx@renesas.com>");
diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c
index 82554dd..cec9995 100644
--- a/drivers/mmc/host/tifm_sd.c
+++ b/drivers/mmc/host/tifm_sd.c
@@ -1032,7 +1032,7 @@
 
 static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)
 {
-	return mmc_suspend_host(tifm_get_drvdata(sock), state);
+	return mmc_suspend_host(tifm_get_drvdata(sock));
 }
 
 static int tifm_sd_resume(struct tifm_dev *sock)
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index 883fcac..ee7d0a5 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -768,7 +768,7 @@
 	struct mmc_host *mmc = platform_get_drvdata(dev);
 	int ret;
 
-	ret = mmc_suspend_host(mmc, state);
+	ret = mmc_suspend_host(mmc);
 
 	/* Tell MFD core it can disable us now.*/
 	if (!ret && cell->disable)
diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c
index 632858a..19f2d72 100644
--- a/drivers/mmc/host/via-sdmmc.c
+++ b/drivers/mmc/host/via-sdmmc.c
@@ -1280,7 +1280,7 @@
 	via_save_pcictrlreg(host);
 	via_save_sdcreg(host);
 
-	ret = mmc_suspend_host(host->mmc, state);
+	ret = mmc_suspend_host(host->mmc);
 
 	pci_save_state(pcidev);
 	pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c
index 69efe01..0012f5d 100644
--- a/drivers/mmc/host/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -1819,7 +1819,7 @@
 {
 	BUG_ON(host == NULL);
 
-	return mmc_suspend_host(host->mmc, state);
+	return mmc_suspend_host(host->mmc);
 }
 
 static int wbsd_resume(struct wbsd_host *host)
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 72ebb3f..4dfa6b9 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -189,8 +189,7 @@
 	return new_offset;
 }
 
-static int vol_cdev_fsync(struct file *file, struct dentry *dentry,
-			  int datasync)
+static int vol_cdev_fsync(struct file *file, int datasync)
 {
 	struct ubi_volume_desc *desc = file->private_data;
 	struct ubi_device *ubi = desc->vol->ubi;
diff --git a/drivers/net/3c507.c b/drivers/net/3c507.c
index 82eaf65..ea9b7a0 100644
--- a/drivers/net/3c507.c
+++ b/drivers/net/3c507.c
@@ -551,8 +551,7 @@
 	void __iomem *shmem;
 
 	if (dev == NULL) {
-		pr_err("%s: net_interrupt(): irq %d for unknown device.\n",
-			dev->name, irq);
+		pr_err("net_interrupt(): irq %d for unknown device.\n", irq);
 		return IRQ_NONE;
 	}
 
diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h
index 373c1a5..b46be49 100644
--- a/drivers/net/benet/be.h
+++ b/drivers/net/benet/be.h
@@ -283,6 +283,8 @@
 	u8 port_type;
 	u8 transceiver;
 	u8 generation;		/* BladeEngine ASIC generation */
+	u32 flash_status;
+	struct completion flash_compl;
 
 	bool sriov_enabled;
 	u32 vf_if_handle[BE_MAX_VF];
diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index e79bf8b..9d11dbf 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -59,6 +59,13 @@
 
 	compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
 				CQE_STATUS_COMPL_MASK;
+
+	if ((compl->tag0 == OPCODE_COMMON_WRITE_FLASHROM) &&
+		(compl->tag1 == CMD_SUBSYSTEM_COMMON)) {
+		adapter->flash_status = compl_status;
+		complete(&adapter->flash_compl);
+	}
+
 	if (compl_status == MCC_STATUS_SUCCESS) {
 		if (compl->tag0 == OPCODE_ETH_GET_STATISTICS) {
 			struct be_cmd_resp_get_stats *resp =
@@ -287,7 +294,7 @@
 		} else {
 			return 0;
 		}
-	} while (timeout < 20);
+	} while (timeout < 40);
 
 	dev_err(&adapter->pdev->dev, "POST timeout; stage=0x%x\n", stage);
 	return -1;
@@ -1417,6 +1424,7 @@
 	int status;
 
 	spin_lock_bh(&adapter->mcc_lock);
+	adapter->flash_status = 0;
 
 	wrb = wrb_from_mccq(adapter);
 	if (!wrb) {
@@ -1428,6 +1436,7 @@
 
 	be_wrb_hdr_prepare(wrb, cmd->size, false, 1,
 			OPCODE_COMMON_WRITE_FLASHROM);
+	wrb->tag1 = CMD_SUBSYSTEM_COMMON;
 
 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
 		OPCODE_COMMON_WRITE_FLASHROM, cmd->size);
@@ -1439,10 +1448,16 @@
 	req->params.op_code = cpu_to_le32(flash_opcode);
 	req->params.data_buf_size = cpu_to_le32(buf_size);
 
-	status = be_mcc_notify_wait(adapter);
+	be_mcc_notify(adapter);
+	spin_unlock_bh(&adapter->mcc_lock);
+
+	if (!wait_for_completion_timeout(&adapter->flash_compl,
+			msecs_to_jiffies(12000)))
+		status = -1;
+	else
+		status = adapter->flash_status;
 
 err:
-	spin_unlock_bh(&adapter->mcc_lock);
 	return status;
 }
 
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 058d7f9..54b1427 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -1861,7 +1861,7 @@
 				goto if_destroy;
 			}
 			vf++;
-		} while (vf < num_vfs);
+		}
 	} else if (!be_physfn(adapter)) {
 		status = be_cmd_mac_addr_query(adapter, mac,
 			MAC_ADDRESS_TYPE_NETWORK, false, adapter->if_handle);
@@ -2319,6 +2319,7 @@
 	spin_lock_init(&adapter->mcc_lock);
 	spin_lock_init(&adapter->mcc_cq_lock);
 
+	init_completion(&adapter->flash_compl);
 	pci_save_state(adapter->pdev);
 	return 0;
 
@@ -2487,10 +2488,6 @@
 		status = be_cmd_POST(adapter);
 		if (status)
 			goto ctrl_clean;
-
-		status = be_cmd_reset_function(adapter);
-		if (status)
-			goto ctrl_clean;
 	}
 
 	/* tell fw we're ready to fire cmds */
@@ -2498,6 +2495,12 @@
 	if (status)
 		goto ctrl_clean;
 
+	if (be_physfn(adapter)) {
+		status = be_cmd_reset_function(adapter);
+		if (status)
+			goto ctrl_clean;
+	}
+
 	status = be_stats_init(adapter);
 	if (status)
 		goto ctrl_clean;
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index 39a54ba..368f333 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -1626,6 +1626,7 @@
 	return 0;
 
 out_err_mdiobus_register:
+	kfree(miibus->irq);
 	mdiobus_free(miibus);
 out_err_alloc:
 	peripheral_free_list(pin_req);
@@ -1638,6 +1639,7 @@
 	struct mii_bus *miibus = platform_get_drvdata(pdev);
 	platform_set_drvdata(pdev, NULL);
 	mdiobus_unregister(miibus);
+	kfree(miibus->irq);
 	mdiobus_free(miibus);
 	peripheral_free_list(pin_req);
 	return 0;
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index 85f7cbf..0a8de01 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -599,6 +599,8 @@
 	priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
 		CAN_CTRLMODE_BERR_REPORTING;
 
+	spin_lock_init(&priv->cmdreg_lock);
+
 	if (sizeof_priv)
 		priv->priv = (void *)priv + sizeof(struct sja1000_priv);
 
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index be90d35..fe92566 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -3367,13 +3367,9 @@
 
 static void cnic_init_context(struct cnic_dev *dev, u32 cid)
 {
-	struct cnic_local *cp = dev->cnic_priv;
 	u32 cid_addr;
 	int i;
 
-	if (CHIP_NUM(cp) == CHIP_NUM_5709)
-		return;
-
 	cid_addr = GET_CID_ADDR(cid);
 
 	for (i = 0; i < CTX_SIZE; i += 4)
@@ -3530,14 +3526,11 @@
 
 	sb_id = cp->status_blk_num;
 	tx_cid = 20;
-	cnic_init_context(dev, tx_cid);
-	cnic_init_context(dev, tx_cid + 1);
 	cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
 	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
 		struct status_block_msix *sblk = cp->status_blk.bnx2;
 
 		tx_cid = TX_TSS_CID + sb_id - 1;
-		cnic_init_context(dev, tx_cid);
 		CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
 			(TX_TSS_CID << 7));
 		cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
@@ -3556,6 +3549,9 @@
 		offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
 		offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
 	} else {
+		cnic_init_context(dev, tx_cid);
+		cnic_init_context(dev, tx_cid + 1);
+
 		offset0 = BNX2_L2CTX_TYPE;
 		offset1 = BNX2_L2CTX_CMD_TYPE;
 		offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
diff --git a/drivers/net/cnic_if.h b/drivers/net/cnic_if.h
index 110c620..0c55177 100644
--- a/drivers/net/cnic_if.h
+++ b/drivers/net/cnic_if.h
@@ -12,8 +12,8 @@
 #ifndef CNIC_IF_H
 #define CNIC_IF_H
 
-#define CNIC_MODULE_VERSION	"2.1.1"
-#define CNIC_MODULE_RELDATE	"Feb 22, 2010"
+#define CNIC_MODULE_VERSION	"2.1.2"
+#define CNIC_MODULE_RELDATE	"May 26, 2010"
 
 #define CNIC_ULP_RDMA		0
 #define CNIC_ULP_ISCSI		1
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index e125113..6586b5c 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -1034,9 +1034,10 @@
 {
 	struct vic_provinfo *vp;
 	u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
-	unsigned short *uuid;
+	u8 *uuid;
 	char uuid_str[38];
-	static char *uuid_fmt = "%04X%04X-%04X-%04X-%04X-%04X%04X%04X";
+	static char *uuid_fmt = "%02X%02X%02X%02X-%02X%02X-%02X%02X-"
+		"%02X%02X-%02X%02X%02X%02X%0X%02X";
 	int err;
 
 	if (!name)
@@ -1058,20 +1059,24 @@
 		ETH_ALEN, mac);
 
 	if (instance_uuid) {
-		uuid = (unsigned short *)instance_uuid;
+		uuid = instance_uuid;
 		sprintf(uuid_str, uuid_fmt,
-			uuid[0], uuid[1], uuid[2], uuid[3],
-			uuid[4], uuid[5], uuid[6], uuid[7]);
+			uuid[0],  uuid[1],  uuid[2],  uuid[3],
+			uuid[4],  uuid[5],  uuid[6],  uuid[7],
+			uuid[8],  uuid[9],  uuid[10], uuid[11],
+			uuid[12], uuid[13], uuid[14], uuid[15]);
 		vic_provinfo_add_tlv(vp,
 			VIC_LINUX_PROV_TLV_CLIENT_UUID_STR,
 			sizeof(uuid_str), uuid_str);
 	}
 
 	if (host_uuid) {
-		uuid = (unsigned short *)host_uuid;
+		uuid = host_uuid;
 		sprintf(uuid_str, uuid_fmt,
-			uuid[0], uuid[1], uuid[2], uuid[3],
-			uuid[4], uuid[5], uuid[6], uuid[7]);
+			uuid[0],  uuid[1],  uuid[2],  uuid[3],
+			uuid[4],  uuid[5],  uuid[6],  uuid[7],
+			uuid[8],  uuid[9],  uuid[10], uuid[11],
+			uuid[12], uuid[13], uuid[14], uuid[15]);
 		vic_provinfo_add_tlv(vp,
 			VIC_LINUX_PROV_TLV_HOST_UUID_STR,
 			sizeof(uuid_str), uuid_str);
@@ -1127,6 +1132,14 @@
 	switch (request) {
 	case PORT_REQUEST_ASSOCIATE:
 
+		/* If the interface mac addr hasn't been assigned,
+		 * assign a random mac addr before setting port-
+		 * profile.
+		 */
+
+		if (is_zero_ether_addr(netdev->dev_addr))
+			random_ether_addr(netdev->dev_addr);
+
 		if (port[IFLA_PORT_PROFILE])
 			name = nla_data(port[IFLA_PORT_PROFILE]);
 
diff --git a/drivers/net/ethoc.c b/drivers/net/ethoc.c
index 14cbde5..6ed2df1 100644
--- a/drivers/net/ethoc.c
+++ b/drivers/net/ethoc.c
@@ -174,6 +174,7 @@
  * @iobase:	pointer to I/O memory region
  * @membase:	pointer to buffer memory region
  * @dma_alloc:	dma allocated buffer size
+ * @io_region_size:	I/O memory region size
  * @num_tx:	number of send buffers
  * @cur_tx:	last send buffer written
  * @dty_tx:	last buffer actually sent
@@ -193,6 +194,7 @@
 	void __iomem *iobase;
 	void __iomem *membase;
 	int dma_alloc;
+	resource_size_t io_region_size;
 
 	unsigned int num_tx;
 	unsigned int cur_tx;
@@ -943,6 +945,7 @@
 	priv = netdev_priv(netdev);
 	priv->netdev = netdev;
 	priv->dma_alloc = 0;
+	priv->io_region_size = mmio->end - mmio->start + 1;
 
 	priv->iobase = devm_ioremap_nocache(&pdev->dev, netdev->base_addr,
 			resource_size(mmio));
@@ -1047,20 +1050,34 @@
 	ret = register_netdev(netdev);
 	if (ret < 0) {
 		dev_err(&netdev->dev, "failed to register interface\n");
-		goto error;
+		goto error2;
 	}
 
 	goto out;
 
+error2:
+	netif_napi_del(&priv->napi);
 error:
 	mdiobus_unregister(priv->mdio);
 free_mdio:
 	kfree(priv->mdio->irq);
 	mdiobus_free(priv->mdio);
 free:
-	if (priv->dma_alloc)
-		dma_free_coherent(NULL, priv->dma_alloc, priv->membase,
-			netdev->mem_start);
+	if (priv) {
+		if (priv->dma_alloc)
+			dma_free_coherent(NULL, priv->dma_alloc, priv->membase,
+					  netdev->mem_start);
+		else if (priv->membase)
+			devm_iounmap(&pdev->dev, priv->membase);
+		if (priv->iobase)
+			devm_iounmap(&pdev->dev, priv->iobase);
+	}
+	if (mem)
+		devm_release_mem_region(&pdev->dev, mem->start,
+					mem->end - mem->start + 1);
+	if (mmio)
+		devm_release_mem_region(&pdev->dev, mmio->start,
+					mmio->end - mmio->start + 1);
 	free_netdev(netdev);
 out:
 	return ret;
@@ -1078,6 +1095,7 @@
 	platform_set_drvdata(pdev, NULL);
 
 	if (netdev) {
+		netif_napi_del(&priv->napi);
 		phy_disconnect(priv->phy);
 		priv->phy = NULL;
 
@@ -1089,6 +1107,14 @@
 		if (priv->dma_alloc)
 			dma_free_coherent(NULL, priv->dma_alloc, priv->membase,
 				netdev->mem_start);
+		else {
+			devm_iounmap(&pdev->dev, priv->membase);
+			devm_release_mem_region(&pdev->dev, netdev->mem_start,
+				netdev->mem_end - netdev->mem_start + 1);
+		}
+		devm_iounmap(&pdev->dev, priv->iobase);
+		devm_release_mem_region(&pdev->dev, netdev->base_addr,
+			priv->io_region_size);
 		unregister_netdev(netdev);
 		free_netdev(netdev);
 	}
diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index 42d9ac9..ddf7a86 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -41,6 +41,7 @@
 #include <linux/clk.h>
 #include <linux/platform_device.h>
 #include <linux/phy.h>
+#include <linux/fec.h>
 
 #include <asm/cacheflush.h>
 
@@ -182,6 +183,7 @@
 	struct  phy_device *phy_dev;
 	int     mii_timeout;
 	uint    phy_speed;
+	phy_interface_t	phy_interface;
 	int	index;
 	int	link;
 	int	full_duplex;
@@ -679,6 +681,8 @@
 	struct phy_device *phy_dev = NULL;
 	int phy_addr;
 
+	fep->phy_dev = NULL;
+
 	/* find the first phy */
 	for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
 		if (fep->mii_bus->phy_map[phy_addr]) {
@@ -709,6 +713,11 @@
 	fep->link = 0;
 	fep->full_duplex = 0;
 
+	printk(KERN_INFO "%s: Freescale FEC PHY driver [%s] "
+		"(mii_bus:phy_addr=%s, irq=%d)\n", dev->name,
+		fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev),
+		fep->phy_dev->irq);
+
 	return 0;
 }
 
@@ -754,13 +763,8 @@
 	if (mdiobus_register(fep->mii_bus))
 		goto err_out_free_mdio_irq;
 
-	if (fec_enet_mii_probe(dev) != 0)
-		goto err_out_unregister_bus;
-
 	return 0;
 
-err_out_unregister_bus:
-	mdiobus_unregister(fep->mii_bus);
 err_out_free_mdio_irq:
 	kfree(fep->mii_bus->irq);
 err_out_free_mdiobus:
@@ -913,7 +917,12 @@
 	if (ret)
 		return ret;
 
-	/* schedule a link state check */
+	/* Probe and connect to PHY when open the interface */
+	ret = fec_enet_mii_probe(dev);
+	if (ret) {
+		fec_enet_free_buffers(dev);
+		return ret;
+	}
 	phy_start(fep->phy_dev);
 	netif_start_queue(dev);
 	fep->opened = 1;
@@ -927,10 +936,12 @@
 
 	/* Don't know what to do yet. */
 	fep->opened = 0;
-	phy_stop(fep->phy_dev);
 	netif_stop_queue(dev);
 	fec_stop(dev);
 
+	if (fep->phy_dev)
+		phy_disconnect(fep->phy_dev);
+
         fec_enet_free_buffers(dev);
 
 	return 0;
@@ -1191,6 +1202,21 @@
 	/* Set MII speed */
 	writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
 
+#ifdef FEC_MIIGSK_ENR
+	if (fep->phy_interface == PHY_INTERFACE_MODE_RMII) {
+		/* disable the gasket and wait */
+		writel(0, fep->hwp + FEC_MIIGSK_ENR);
+		while (readl(fep->hwp + FEC_MIIGSK_ENR) & 4)
+			udelay(1);
+
+		/* configure the gasket: RMII, 50 MHz, no loopback, no echo */
+		writel(1, fep->hwp + FEC_MIIGSK_CFGR);
+
+		/* re-enable the gasket */
+		writel(2, fep->hwp + FEC_MIIGSK_ENR);
+	}
+#endif
+
 	/* And last, enable the transmit and receive processing */
 	writel(2, fep->hwp + FEC_ECNTRL);
 	writel(0, fep->hwp + FEC_R_DES_ACTIVE);
@@ -1226,6 +1252,7 @@
 fec_probe(struct platform_device *pdev)
 {
 	struct fec_enet_private *fep;
+	struct fec_platform_data *pdata;
 	struct net_device *ndev;
 	int i, irq, ret = 0;
 	struct resource *r;
@@ -1259,6 +1286,10 @@
 
 	platform_set_drvdata(pdev, ndev);
 
+	pdata = pdev->dev.platform_data;
+	if (pdata)
+		fep->phy_interface = pdata->phy;
+
 	/* This device has up to three irqs on some platforms */
 	for (i = 0; i < 3; i++) {
 		irq = platform_get_irq(pdev, i);
@@ -1294,11 +1325,6 @@
 	if (ret)
 		goto failed_register;
 
-	printk(KERN_INFO "%s: Freescale FEC PHY driver [%s] "
-		"(mii_bus:phy_addr=%s, irq=%d)\n", ndev->name,
-		fep->phy_dev->drv->name, dev_name(&fep->phy_dev->dev),
-		fep->phy_dev->irq);
-
 	return 0;
 
 failed_register:
diff --git a/drivers/net/fec.h b/drivers/net/fec.h
index cc47f3f..2c48b25 100644
--- a/drivers/net/fec.h
+++ b/drivers/net/fec.h
@@ -43,6 +43,8 @@
 #define FEC_R_DES_START		0x180 /* Receive descriptor ring */
 #define FEC_X_DES_START		0x184 /* Transmit descriptor ring */
 #define FEC_R_BUFF_SIZE		0x188 /* Maximum receive buff size */
+#define FEC_MIIGSK_CFGR		0x300 /* MIIGSK Configuration reg */
+#define FEC_MIIGSK_ENR		0x308 /* MIIGSK Enable reg */
 
 #else
 
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 694132e..4e7d1d0 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -1151,8 +1151,7 @@
 		dev = alloc_netdev(sizeof(struct yam_port), name,
 				   yam_setup);
 		if (!dev) {
-			printk(KERN_ERR "yam: cannot allocate net device %s\n",
-			       dev->name);
+			pr_err("yam: cannot allocate net device\n");
 			err = -ENOMEM;
 			goto error;
 		}
diff --git a/drivers/net/irda/bfin_sir.c b/drivers/net/irda/bfin_sir.c
index 911c082..f940dfa 100644
--- a/drivers/net/irda/bfin_sir.c
+++ b/drivers/net/irda/bfin_sir.c
@@ -107,8 +107,12 @@
 	case 57600:
 	case 115200:
 
-		quot = (port->clk + (8 * speed)) / (16 * speed)\
-						- ANOMALY_05000230;
+		/*
+		 * IRDA is not affected by anomaly 05000230, so there is no
+		 * need to tweak the divisor like he UART driver (which will
+		 * slightly speed up the baud rate on us).
+		 */
+		quot = (port->clk + (8 * speed)) / (16 * speed);
 
 		do {
 			udelay(utime);
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index d0ea3d6..ffae480 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -360,6 +360,7 @@
 	u32 flags2;
 #define IXGBE_FLAG2_RSC_CAPABLE                 (u32)(1)
 #define IXGBE_FLAG2_RSC_ENABLED                 (u32)(1 << 1)
+#define IXGBE_FLAG2_TEMP_SENSOR_CAPABLE         (u32)(1 << 2)
 /* default to trying for four seconds */
 #define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
 
@@ -407,6 +408,8 @@
 	u16 eeprom_version;
 
 	int node;
+	struct work_struct check_overtemp_task;
+	u32 interrupt_event;
 
 	/* SR-IOV */
 	DECLARE_BITMAP(active_vfs, IXGBE_MAX_VF_FUNCTIONS);
diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
index f2b7ff4..9c02d60 100644
--- a/drivers/net/ixgbe/ixgbe_82598.c
+++ b/drivers/net/ixgbe/ixgbe_82598.c
@@ -1236,6 +1236,7 @@
 	.setup_link		= &ixgbe_setup_phy_link_generic,
 	.setup_link_speed	= &ixgbe_setup_phy_link_speed_generic,
 	.read_i2c_eeprom	= &ixgbe_read_i2c_eeprom_82598,
+	.check_overtemp   = &ixgbe_tn_check_overtemp,
 };
 
 struct ixgbe_info ixgbe_82598_info = {
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index e9706eb..a4e2901 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -2395,6 +2395,7 @@
 	.write_i2c_byte         = &ixgbe_write_i2c_byte_generic,
 	.read_i2c_eeprom        = &ixgbe_read_i2c_eeprom_generic,
 	.write_i2c_eeprom       = &ixgbe_write_i2c_eeprom_generic,
+	.check_overtemp         = &ixgbe_tn_check_overtemp,
 };
 
 struct ixgbe_info ixgbe_82599_info = {
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 9551cbb..d571d10 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -108,6 +108,8 @@
 	 board_82599 },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
 	 board_82599 },
+	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM),
+	 board_82599 },
 	{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
 	 board_82599 },
 
@@ -1618,6 +1620,48 @@
 	}
 }
 
+/**
+ * ixgbe_check_overtemp_task - worker thread to check over tempurature
+ * @work: pointer to work_struct containing our data
+ **/
+static void ixgbe_check_overtemp_task(struct work_struct *work)
+{
+	struct ixgbe_adapter *adapter = container_of(work,
+	                                             struct ixgbe_adapter,
+	                                             check_overtemp_task);
+	struct ixgbe_hw *hw = &adapter->hw;
+	u32 eicr = adapter->interrupt_event;
+
+	if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
+		switch (hw->device_id) {
+		case IXGBE_DEV_ID_82599_T3_LOM: {
+			u32 autoneg;
+			bool link_up = false;
+
+			if (hw->mac.ops.check_link)
+				hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
+
+			if (((eicr & IXGBE_EICR_GPI_SDP0) && (!link_up)) ||
+			    (eicr & IXGBE_EICR_LSC))
+				/* Check if this is due to overtemp */
+				if (hw->phy.ops.check_overtemp(hw) == IXGBE_ERR_OVERTEMP)
+					break;
+			}
+			return;
+		default:
+			if (!(eicr & IXGBE_EICR_GPI_SDP0))
+				return;
+			break;
+		}
+		DPRINTK(DRV, ERR, "Network adapter has been stopped because it "
+		        "has over heated. Restart the computer. If the problem "
+		        "persists, power off the system and replace the "
+		        "adapter\n");
+		/* write to clear the interrupt */
+		IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0);
+	}
+}
+
 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
 {
 	struct ixgbe_hw *hw = &adapter->hw;
@@ -1689,6 +1733,10 @@
 
 	if (hw->mac.type == ixgbe_mac_82599EB) {
 		ixgbe_check_sfp_event(adapter, eicr);
+		adapter->interrupt_event = eicr;
+		if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
+		    ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
+			schedule_work(&adapter->check_overtemp_task);
 
 		/* Handle Flow Director Full threshold interrupt */
 		if (eicr & IXGBE_EICR_FLOW_DIR) {
@@ -2190,6 +2238,8 @@
 	u32 mask;
 
 	mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
+	if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
+		mask |= IXGBE_EIMS_GPI_SDP0;
 	if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
 		mask |= IXGBE_EIMS_GPI_SDP1;
 	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
@@ -2250,6 +2300,9 @@
 		ixgbe_check_sfp_event(adapter, eicr);
 
 	ixgbe_check_fan_failure(adapter, eicr);
+	if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
+	    ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
+		schedule_work(&adapter->check_overtemp_task);
 
 	if (napi_schedule_prep(&(q_vector->napi))) {
 		adapter->tx_ring[0]->total_packets = 0;
@@ -3265,6 +3318,13 @@
 		IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
 	}
 
+	/* Enable Thermal over heat sensor interrupt */
+	if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
+		gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
+		gpie |= IXGBE_SDP0_GPIEN;
+		IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
+	}
+
 	/* Enable fan failure interrupt if media type is copper */
 	if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
 		gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
@@ -3666,6 +3726,9 @@
 	    adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
 		cancel_work_sync(&adapter->fdir_reinit_task);
 
+	if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
+		cancel_work_sync(&adapter->check_overtemp_task);
+
 	/* disable transmits in the hardware now that interrupts are off */
 	for (i = 0; i < adapter->num_tx_queues; i++) {
 		j = adapter->tx_ring[i]->reg_idx;
@@ -4645,6 +4708,8 @@
 		adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
 		adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
 		adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
+		if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
+			adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
 		if (dev->features & NETIF_F_NTUPLE) {
 			/* Flow Director perfect filter enabled */
 			adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
@@ -6561,7 +6626,9 @@
 	}
 
 	/* reset_hw fills in the perm_addr as well */
+	hw->phy.reset_if_overtemp = true;
 	err = hw->mac.ops.reset_hw(hw);
+	hw->phy.reset_if_overtemp = false;
 	if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
 	    hw->mac.type == ixgbe_mac_82598EB) {
 		/*
@@ -6730,6 +6797,8 @@
 	    adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
 		INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
 
+	if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
+		INIT_WORK(&adapter->check_overtemp_task, ixgbe_check_overtemp_task);
 #ifdef CONFIG_IXGBE_DCA
 	if (dca_add_requester(&pdev->dev) == 0) {
 		adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
diff --git a/drivers/net/ixgbe/ixgbe_phy.c b/drivers/net/ixgbe/ixgbe_phy.c
index 22d21af..09e1911 100644
--- a/drivers/net/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ixgbe/ixgbe_phy.c
@@ -135,6 +135,11 @@
  **/
 s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw)
 {
+	/* Don't reset PHY if it's shut down due to overtemp. */
+	if (!hw->phy.reset_if_overtemp &&
+	    (IXGBE_ERR_OVERTEMP == hw->phy.ops.check_overtemp(hw)))
+		return 0;
+
 	/*
 	 * Perform soft PHY reset to the PHY_XS.
 	 * This will cause a soft reset to the PHY
@@ -1345,3 +1350,28 @@
 	return status;
 }
 
+/**
+ *  ixgbe_tn_check_overtemp - Checks if an overtemp occured.
+ *  @hw: pointer to hardware structure
+ *
+ *  Checks if the LASI temp alarm status was triggered due to overtemp
+ **/
+s32 ixgbe_tn_check_overtemp(struct ixgbe_hw *hw)
+{
+	s32 status = 0;
+	u16 phy_data = 0;
+
+	if (hw->device_id != IXGBE_DEV_ID_82599_T3_LOM)
+		goto out;
+
+	/* Check that the LASI temp alarm status was triggered */
+	hw->phy.ops.read_reg(hw, IXGBE_TN_LASI_STATUS_REG,
+	                     MDIO_MMD_PMAPMD, &phy_data);
+
+	if (!(phy_data & IXGBE_TN_LASI_STATUS_TEMP_ALARM))
+		goto out;
+
+	status = IXGBE_ERR_OVERTEMP;
+out:
+	return status;
+}
diff --git a/drivers/net/ixgbe/ixgbe_phy.h b/drivers/net/ixgbe/ixgbe_phy.h
index c9c5459..ef4ba83 100644
--- a/drivers/net/ixgbe/ixgbe_phy.h
+++ b/drivers/net/ixgbe/ixgbe_phy.h
@@ -80,6 +80,8 @@
 #define IXGBE_I2C_T_SU_STO  4
 #define IXGBE_I2C_T_BUF     5
 
+#define IXGBE_TN_LASI_STATUS_REG        0x9005
+#define IXGBE_TN_LASI_STATUS_TEMP_ALARM 0x0008
 
 s32 ixgbe_init_phy_ops_generic(struct ixgbe_hw *hw);
 s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw);
@@ -106,6 +108,7 @@
 s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
                                         u16 *list_offset,
                                         u16 *data_offset);
+s32 ixgbe_tn_check_overtemp(struct ixgbe_hw *hw);
 s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
                                 u8 dev_addr, u8 *data);
 s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index 39b9be8..2eb6e15 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -51,6 +51,7 @@
 #define IXGBE_DEV_ID_82599_KX4           0x10F7
 #define IXGBE_DEV_ID_82599_KX4_MEZZ      0x1514
 #define IXGBE_DEV_ID_82599_KR            0x1517
+#define IXGBE_DEV_ID_82599_T3_LOM        0x151C
 #define IXGBE_DEV_ID_82599_CX4           0x10F9
 #define IXGBE_DEV_ID_82599_SFP           0x10FB
 #define IXGBE_DEV_ID_82599_SFP_EM        0x1507
@@ -2470,6 +2471,7 @@
 	s32 (*write_i2c_byte)(struct ixgbe_hw *, u8, u8, u8);
 	s32 (*read_i2c_eeprom)(struct ixgbe_hw *, u8 , u8 *);
 	s32 (*write_i2c_eeprom)(struct ixgbe_hw *, u8, u8);
+	s32 (*check_overtemp)(struct ixgbe_hw *);
 };
 
 struct ixgbe_eeprom_info {
@@ -2518,6 +2520,7 @@
 	enum ixgbe_smart_speed          smart_speed;
 	bool                            smart_speed_active;
 	bool                            multispeed_fiber;
+	bool                            reset_if_overtemp;
 };
 
 #include "ixgbe_mbx.h"
@@ -2605,6 +2608,7 @@
 #define IXGBE_ERR_FDIR_REINIT_FAILED            -23
 #define IXGBE_ERR_EEPROM_VERSION                -24
 #define IXGBE_ERR_NO_SPACE                      -25
+#define IXGBE_ERR_OVERTEMP                      -26
 #define IXGBE_NOT_IMPLEMENTED                   0x7FFFFFFF
 
 #endif /* _IXGBE_TYPE_H_ */
diff --git a/drivers/net/ll_temac.h b/drivers/net/ll_temac.h
index c033584..522abe2 100644
--- a/drivers/net/ll_temac.h
+++ b/drivers/net/ll_temac.h
@@ -295,6 +295,10 @@
 
 #define MULTICAST_CAM_TABLE_NUM 4
 
+/* TEMAC Synthesis features */
+#define TEMAC_FEATURE_RX_CSUM  (1 << 0)
+#define TEMAC_FEATURE_TX_CSUM  (1 << 1)
+
 /* TX/RX CURDESC_PTR points to first descriptor */
 /* TX/RX TAILDESC_PTR points to last descriptor in linked list */
 
@@ -353,6 +357,7 @@
 	struct mutex indirect_mutex;
 	u32 options;			/* Current options word */
 	int last_link;
+	unsigned int temac_features;
 
 	/* Buffer descriptors */
 	struct cdmac_bd *tx_bd_v;
diff --git a/drivers/net/ll_temac_main.c b/drivers/net/ll_temac_main.c
index fa7620e2..52dcc84 100644
--- a/drivers/net/ll_temac_main.c
+++ b/drivers/net/ll_temac_main.c
@@ -245,7 +245,7 @@
 					  CHNL_CTRL_IRQ_COAL_EN);
 	/* 0x10220483 */
 	/* 0x00100483 */
-	lp->dma_out(lp, RX_CHNL_CTRL, 0xff010000 |
+	lp->dma_out(lp, RX_CHNL_CTRL, 0xff070000 |
 					  CHNL_CTRL_IRQ_EN |
 					  CHNL_CTRL_IRQ_DLY_EN |
 					  CHNL_CTRL_IRQ_COAL_EN |
@@ -574,6 +574,10 @@
 		if (cur_p->app4)
 			dev_kfree_skb_irq((struct sk_buff *)cur_p->app4);
 		cur_p->app0 = 0;
+		cur_p->app1 = 0;
+		cur_p->app2 = 0;
+		cur_p->app3 = 0;
+		cur_p->app4 = 0;
 
 		ndev->stats.tx_packets++;
 		ndev->stats.tx_bytes += cur_p->len;
@@ -589,6 +593,29 @@
 	netif_wake_queue(ndev);
 }
 
+static inline int temac_check_tx_bd_space(struct temac_local *lp, int num_frag)
+{
+	struct cdmac_bd *cur_p;
+	int tail;
+
+	tail = lp->tx_bd_tail;
+	cur_p = &lp->tx_bd_v[tail];
+
+	do {
+		if (cur_p->app0)
+			return NETDEV_TX_BUSY;
+
+		tail++;
+		if (tail >= TX_BD_NUM)
+			tail = 0;
+
+		cur_p = &lp->tx_bd_v[tail];
+		num_frag--;
+	} while (num_frag >= 0);
+
+	return 0;
+}
+
 static int temac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 {
 	struct temac_local *lp = netdev_priv(ndev);
@@ -603,7 +630,7 @@
 	start_p = lp->tx_bd_p + sizeof(*lp->tx_bd_v) * lp->tx_bd_tail;
 	cur_p = &lp->tx_bd_v[lp->tx_bd_tail];
 
-	if (cur_p->app0 & STS_CTRL_APP0_CMPLT) {
+	if (temac_check_tx_bd_space(lp, num_frag)) {
 		if (!netif_queue_stopped(ndev)) {
 			netif_stop_queue(ndev);
 			return NETDEV_TX_BUSY;
@@ -613,29 +640,14 @@
 
 	cur_p->app0 = 0;
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		const struct iphdr *ip = ip_hdr(skb);
-		int length = 0, start = 0, insert = 0;
+		unsigned int csum_start_off = skb_transport_offset(skb);
+		unsigned int csum_index_off = csum_start_off + skb->csum_offset;
 
-		switch (ip->protocol) {
-		case IPPROTO_TCP:
-			start = sizeof(struct iphdr) + ETH_HLEN;
-			insert = sizeof(struct iphdr) + ETH_HLEN + 16;
-			length = ip->tot_len - sizeof(struct iphdr);
-			break;
-		case IPPROTO_UDP:
-			start = sizeof(struct iphdr) + ETH_HLEN;
-			insert = sizeof(struct iphdr) + ETH_HLEN + 6;
-			length = ip->tot_len - sizeof(struct iphdr);
-			break;
-		default:
-			break;
-		}
-		cur_p->app1 = ((start << 16) | insert);
-		cur_p->app2 = csum_tcpudp_magic(ip->saddr, ip->daddr,
-						length, ip->protocol, 0);
-		skb->data[insert] = 0;
-		skb->data[insert + 1] = 0;
+		cur_p->app0 |= 1; /* TX Checksum Enabled */
+		cur_p->app1 = (csum_start_off << 16) | csum_index_off;
+		cur_p->app2 = 0;  /* initial checksum seed */
 	}
+
 	cur_p->app0 |= STS_CTRL_APP0_SOP;
 	cur_p->len = skb_headlen(skb);
 	cur_p->phys = dma_map_single(ndev->dev.parent, skb->data, skb->len,
@@ -699,6 +711,15 @@
 		skb->protocol = eth_type_trans(skb, ndev);
 		skb->ip_summed = CHECKSUM_NONE;
 
+		/* if we're doing rx csum offload, set it up */
+		if (((lp->temac_features & TEMAC_FEATURE_RX_CSUM) != 0) &&
+			(skb->protocol == __constant_htons(ETH_P_IP)) &&
+			(skb->len > 64)) {
+
+			skb->csum = cur_p->app3 & 0xFFFF;
+			skb->ip_summed = CHECKSUM_COMPLETE;
+		}
+
 		netif_rx(skb);
 
 		ndev->stats.rx_packets++;
@@ -883,6 +904,7 @@
 	struct temac_local *lp;
 	struct net_device *ndev;
 	const void *addr;
+	__be32 *p;
 	int size, rc = 0;
 
 	/* Init network device structure */
@@ -926,6 +948,18 @@
 		goto nodev;
 	}
 
+	/* Setup checksum offload, but default to off if not specified */
+	lp->temac_features = 0;
+	p = (__be32 *)of_get_property(op->dev.of_node, "xlnx,txcsum", NULL);
+	if (p && be32_to_cpu(*p)) {
+		lp->temac_features |= TEMAC_FEATURE_TX_CSUM;
+		/* Can checksum TCP/UDP over IPv4. */
+		ndev->features |= NETIF_F_IP_CSUM;
+	}
+	p = (__be32 *)of_get_property(op->dev.of_node, "xlnx,rxcsum", NULL);
+	if (p && be32_to_cpu(*p))
+		lp->temac_features |= TEMAC_FEATURE_RX_CSUM;
+
 	/* Find the DMA node, map the DMA registers, and decode the DMA IRQs */
 	np = of_parse_phandle(op->dev.of_node, "llink-connected", 0);
 	if (!np) {
@@ -950,7 +984,7 @@
 
 	lp->rx_irq = irq_of_parse_and_map(np, 0);
 	lp->tx_irq = irq_of_parse_and_map(np, 1);
-	if (!lp->rx_irq || !lp->tx_irq) {
+	if ((lp->rx_irq == NO_IRQ) || (lp->tx_irq == NO_IRQ)) {
 		dev_err(&op->dev, "could not determine irqs\n");
 		rc = -ENOMEM;
 		goto nodev;
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 4e238af..87e8d4c 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -634,11 +634,18 @@
 
 	err = register_netdevice(dev);
 	if (err < 0)
-		return err;
+		goto destroy_port;
 
 	list_add_tail(&vlan->list, &port->vlans);
 	netif_stacked_transfer_operstate(lowerdev, dev);
+
 	return 0;
+
+destroy_port:
+	if (list_empty(&port->vlans))
+		macvlan_port_destroy(lowerdev);
+
+	return err;
 }
 EXPORT_SYMBOL_GPL(macvlan_common_newlink);
 
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 5441688..c5f8eb1 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -2926,5 +2926,5 @@
 EXPORT_SYMBOL(ppp_register_compressor);
 EXPORT_SYMBOL(ppp_unregister_compressor);
 MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(PPP_MAJOR);
-MODULE_ALIAS("/dev/ppp");
+MODULE_ALIAS_CHARDEV(PPP_MAJOR, 0);
+MODULE_ALIAS("devname:ppp");
diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c
index b1b93ff..805b64d 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -289,6 +289,7 @@
 	struct pppoe_net *pn;
 	int i;
 
+	pn = pppoe_pernet(dev_net(dev));
 	write_lock_bh(&pn->hash_lock);
 	for (i = 0; i < PPPOE_HASH_SIZE; i++) {
 		struct pppox_sock *po = pn->hash_table[i];
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 586ed09..501a55f 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -1294,6 +1294,9 @@
 	/* remove mdio bus info from net_device */
 	dev_set_drvdata(&ndev->dev, NULL);
 
+	/* free interrupts memory */
+	kfree(bus->irq);
+
 	/* free bitbang info */
 	free_mdio_bitbang(bus);
 
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 97b2553..6ad6fe7 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -526,6 +526,8 @@
 	struct sk_buff *skb;
 	int err;
 
+	sock_update_classid(sk);
+
 	/* Under a page?  Don't bother with paged skb. */
 	if (prepad + len < PAGE_SIZE || !linear)
 		linear = len;
@@ -1649,3 +1651,4 @@
 MODULE_AUTHOR(DRV_COPYRIGHT);
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_MISCDEV(TUN_MINOR);
+MODULE_ALIAS("devname:net/tun");
diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index 31b7331..1f802e90 100644
--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -322,7 +322,7 @@
 		size = (u16) (header & 0x0000ffff);
 
 		if ((skb->len) - ((size + 1) & 0xfffe) == 0) {
-			u8 alignment = (u32)skb->data & 0x3;
+			u8 alignment = (unsigned long)skb->data & 0x3;
 			if (alignment != 0x2) {
 				/*
 				 * not 16bit aligned so use the room provided by
@@ -351,7 +351,7 @@
 		}
 		ax_skb = skb_clone(skb, GFP_ATOMIC);
 		if (ax_skb) {
-			u8 alignment = (u32)packet & 0x3;
+			u8 alignment = (unsigned long)packet & 0x3;
 			ax_skb->len = size;
 
 			if (alignment != 0x2) {
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 9964df1..0a3c41f 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -475,6 +475,9 @@
 	{USB_DEVICE(0x0af0, 0x8302)},
 	{USB_DEVICE(0x0af0, 0x8304)},
 	{USB_DEVICE(0x0af0, 0x8400)},
+	{USB_DEVICE(0x0af0, 0x8600)},
+	{USB_DEVICE(0x0af0, 0x8800)},
+	{USB_DEVICE(0x0af0, 0x8900)},
 	{USB_DEVICE(0x0af0, 0xd035)},
 	{USB_DEVICE(0x0af0, 0xd055)},
 	{USB_DEVICE(0x0af0, 0xd155)},
diff --git a/drivers/net/wimax/i2400m/rx.c b/drivers/net/wimax/i2400m/rx.c
index 6537593..8cc9e31 100644
--- a/drivers/net/wimax/i2400m/rx.c
+++ b/drivers/net/wimax/i2400m/rx.c
@@ -1027,12 +1027,12 @@
 		ro_sn = (reorder >> I2400M_RO_SN_SHIFT) & I2400M_RO_SN;
 
 		spin_lock_irqsave(&i2400m->rx_lock, flags);
-		roq = &i2400m->rx_roq[ro_cin];
-		if (roq == NULL) {
+		if (i2400m->rx_roq == NULL) {
 			kfree_skb(skb);	/* rx_roq is already destroyed */
 			spin_unlock_irqrestore(&i2400m->rx_lock, flags);
 			goto error;
 		}
+		roq = &i2400m->rx_roq[ro_cin];
 		kref_get(&i2400m->rx_roq_refcount);
 		spin_unlock_irqrestore(&i2400m->rx_lock, flags);
 
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 5f04cf3..cc6d41d 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -1214,6 +1214,7 @@
 	struct ath5k_hw *ah = sc->ah;
 	struct sk_buff *skb = bf->skb;
 	struct ath5k_desc *ds;
+	int ret;
 
 	if (!skb) {
 		skb = ath5k_rx_skb_alloc(sc, &bf->skbaddr);
@@ -1240,9 +1241,9 @@
 	ds = bf->desc;
 	ds->ds_link = bf->daddr;	/* link to self */
 	ds->ds_data = bf->skbaddr;
-	ah->ah_setup_rx_desc(ah, ds,
-		skb_tailroom(skb),	/* buffer size */
-		0);
+	ret = ah->ah_setup_rx_desc(ah, ds, ah->common.rx_bufsize, 0);
+	if (ret)
+		return ret;
 
 	if (sc->rxlink != NULL)
 		*sc->rxlink = bf->daddr;
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index c8a4558..f43d85a 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -76,22 +76,13 @@
 	ds = bf->bf_desc;
 	flags = ATH9K_TXDESC_NOACK;
 
-	if (((sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
-	     (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) &&
-	    (ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
-		ds->ds_link = bf->bf_daddr; /* self-linked */
-		flags |= ATH9K_TXDESC_VEOL;
-		/* Let hardware handle antenna switching. */
-		antenna = 0;
-	} else {
-		ds->ds_link = 0;
-		/*
-		 * Switch antenna every beacon.
-		 * Should only switch every beacon period, not for every SWBA
-		 * XXX assumes two antennae
-		 */
-		antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
-	}
+	ds->ds_link = 0;
+	/*
+	 * Switch antenna every beacon.
+	 * Should only switch every beacon period, not for every SWBA
+	 * XXX assumes two antennae
+	 */
+	antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
 
 	sband = &sc->sbands[common->hw->conf.channel->band];
 	rate = sband->bitrates[rateidx].hw_value;
@@ -215,36 +206,6 @@
 	return bf;
 }
 
-/*
- * Startup beacon transmission for adhoc mode when they are sent entirely
- * by the hardware using the self-linked descriptor + veol trick.
-*/
-static void ath_beacon_start_adhoc(struct ath_softc *sc,
-				   struct ieee80211_vif *vif)
-{
-	struct ath_hw *ah = sc->sc_ah;
-	struct ath_common *common = ath9k_hw_common(ah);
-	struct ath_buf *bf;
-	struct ath_vif *avp;
-	struct sk_buff *skb;
-
-	avp = (void *)vif->drv_priv;
-
-	if (avp->av_bcbuf == NULL)
-		return;
-
-	bf = avp->av_bcbuf;
-	skb = bf->bf_mpdu;
-
-	ath_beacon_setup(sc, avp, bf, 0);
-
-	/* NB: caller is known to have already stopped tx dma */
-	ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bf->bf_daddr);
-	ath9k_hw_txstart(ah, sc->beacon.beaconq);
-	ath_print(common, ATH_DBG_BEACON, "TXDP%u = %llx (%p)\n",
-		  sc->beacon.beaconq, ito64(bf->bf_daddr), bf->bf_desc);
-}
-
 int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
 {
 	struct ath_softc *sc = aphy->sc;
@@ -265,7 +226,8 @@
 		list_del(&avp->av_bcbuf->list);
 
 		if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
-		    !(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
+		    sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC ||
+		    sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) {
 			int slot;
 			/*
 			 * Assign the vif to a beacon xmit slot. As
@@ -274,17 +236,11 @@
 			avp->av_bslot = 0;
 			for (slot = 0; slot < ATH_BCBUF; slot++)
 				if (sc->beacon.bslot[slot] == NULL) {
-					/*
-					 * XXX hack, space out slots to better
-					 * deal with misses
-					 */
-					if (slot+1 < ATH_BCBUF &&
-					    sc->beacon.bslot[slot+1] == NULL) {
-						avp->av_bslot = slot+1;
-						break;
-					}
 					avp->av_bslot = slot;
+
 					/* NB: keep looking for a double slot */
+					if (slot == 0 || !sc->beacon.bslot[slot-1])
+						break;
 				}
 			BUG_ON(sc->beacon.bslot[avp->av_bslot] != NULL);
 			sc->beacon.bslot[avp->av_bslot] = vif;
@@ -721,8 +677,7 @@
 	 * self-linked tx descriptor and let the hardware deal with things.
 	 */
 	intval |= ATH9K_BEACON_ENA;
-	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_VEOL))
-		ah->imask |= ATH9K_INT_SWBA;
+	ah->imask |= ATH9K_INT_SWBA;
 
 	ath_beaconq_config(sc);
 
@@ -732,10 +687,6 @@
 	ath9k_beacon_init(sc, nexttbtt, intval);
 	sc->beacon.bmisscnt = 0;
 	ath9k_hw_set_interrupts(ah, ah->imask);
-
-	/* FIXME: Handle properly when vif is NULL */
-	if (vif && ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)
-		ath_beacon_start_adhoc(sc, vif);
 }
 
 void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index 46dc41a..77b3591 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -107,12 +107,14 @@
 static void hif_usb_tx_cb(struct urb *urb)
 {
 	struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
-	struct hif_device_usb *hif_dev = tx_buf->hif_dev;
+	struct hif_device_usb *hif_dev;
 	struct sk_buff *skb;
 
-	if (!hif_dev || !tx_buf)
+	if (!tx_buf || !tx_buf->hif_dev)
 		return;
 
+	hif_dev = tx_buf->hif_dev;
+
 	switch (urb->status) {
 	case 0:
 		break;
@@ -607,6 +609,10 @@
 
 	return 0;
 err:
+	if (tx_buf) {
+		kfree(tx_buf->buf);
+		kfree(tx_buf);
+	}
 	ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
 	return -ENOMEM;
 }
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index ad556aa..c251603 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -23,6 +23,7 @@
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
 #include <linux/leds.h>
+#include <linux/slab.h>
 #include <net/mac80211.h>
 
 #include "common.h"
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index 257b10ba..1ec836c 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -28,7 +28,6 @@
 	{ PCI_VDEVICE(ATHEROS, 0x002C) }, /* PCI-E 802.11n bonded out */
 	{ PCI_VDEVICE(ATHEROS, 0x002D) }, /* PCI   */
 	{ PCI_VDEVICE(ATHEROS, 0x002E) }, /* PCI-E */
-	{ PCI_VDEVICE(ATHEROS, 0x0030) }, /* PCI-E  AR9300 */
 	{ 0 }
 };
 
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index ba13913..ca6065b 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -19,6 +19,12 @@
 
 #define SKB_CB_ATHBUF(__skb)	(*((struct ath_buf **)__skb->cb))
 
+static inline bool ath9k_check_auto_sleep(struct ath_softc *sc)
+{
+	return sc->ps_enabled &&
+	       (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP);
+}
+
 static struct ieee80211_hw * ath_get_virt_hw(struct ath_softc *sc,
 					     struct ieee80211_hdr *hdr)
 {
@@ -616,8 +622,8 @@
 	hdr = (struct ieee80211_hdr *)skb->data;
 
 	/* Process Beacon and CAB receive in PS state */
-	if ((sc->ps_flags & PS_WAIT_FOR_BEACON) &&
-	    ieee80211_is_beacon(hdr->frame_control))
+	if (((sc->ps_flags & PS_WAIT_FOR_BEACON) || ath9k_check_auto_sleep(sc))
+	    && ieee80211_is_beacon(hdr->frame_control))
 		ath_rx_ps_beacon(sc, skb);
 	else if ((sc->ps_flags & PS_WAIT_FOR_CAB) &&
 		 (ieee80211_is_data(hdr->frame_control) ||
@@ -932,9 +938,10 @@
 			sc->rx.rxotherant = 0;
 		}
 
-		if (unlikely(sc->ps_flags & (PS_WAIT_FOR_BEACON |
-					     PS_WAIT_FOR_CAB |
-					     PS_WAIT_FOR_PSPOLL_DATA)))
+		if (unlikely(ath9k_check_auto_sleep(sc) ||
+			     (sc->ps_flags & (PS_WAIT_FOR_BEACON |
+					      PS_WAIT_FOR_CAB |
+					      PS_WAIT_FOR_PSPOLL_DATA))))
 			ath_rx_ps(sc, skb);
 
 		ath_rx_send_to_mac80211(hw, sc, skb, rxs);
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-ict.c b/drivers/net/wireless/iwlwifi/iwl-agn-ict.c
index a273e37..c92b2c0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-ict.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-ict.c
@@ -30,6 +30,7 @@
 #include <linux/module.h>
 #include <linux/etherdevice.h>
 #include <linux/sched.h>
+#include <linux/gfp.h>
 #include <net/mac80211.h>
 
 #include "iwl-dev.h"
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 107e173..5d3f51f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -376,6 +376,11 @@
 
 	mutex_lock(&priv->mutex);
 
+	if (priv->is_internal_short_scan == true) {
+		IWL_DEBUG_SCAN(priv, "Internal scan already in progress\n");
+		goto unlock;
+	}
+
 	if (!iwl_is_ready_rf(priv)) {
 		IWL_DEBUG_SCAN(priv, "not ready or exit pending\n");
 		goto unlock;
@@ -497,17 +502,27 @@
 {
 	struct iwl_priv *priv =
 	    container_of(work, struct iwl_priv, scan_completed);
+	bool internal = false;
 
 	IWL_DEBUG_SCAN(priv, "SCAN complete scan\n");
 
 	cancel_delayed_work(&priv->scan_check);
 
-	if (!priv->is_internal_short_scan)
-		ieee80211_scan_completed(priv->hw, false);
-	else {
+	mutex_lock(&priv->mutex);
+	if (priv->is_internal_short_scan) {
 		priv->is_internal_short_scan = false;
 		IWL_DEBUG_SCAN(priv, "internal short scan completed\n");
+		internal = true;
 	}
+	mutex_unlock(&priv->mutex);
+
+	/*
+	 * Do not hold mutex here since this will cause mac80211 to call
+	 * into driver again into functions that will attempt to take
+	 * mutex.
+	 */
+	if (!internal)
+		ieee80211_scan_completed(priv->hw, false);
 
 	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 		return;
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index 85ed235..83a2636 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -431,7 +431,7 @@
 	struct iwl_link_quality_cmd *link_cmd;
 	unsigned long flags;
 
-	if (*sta_id_r)
+	if (sta_id_r)
 		*sta_id_r = IWL_INVALID_STATION;
 
 	ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id);
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 2d28908..4bd61ee 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -2572,14 +2572,18 @@
 
 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
 {
-	union iwreq_data evt;
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+
+	if (priv->connected) {
+		priv->connected = false;
+		memset(priv->bssid, 0, ETH_ALEN);
+
+		deauthenticate(usbdev);
+
+		cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
+	}
 
 	netif_carrier_off(usbdev->net);
-
-	evt.data.flags = 0;
-	evt.data.length = 0;
-	memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
-	wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
 }
 
 static void rndis_wlan_worker(struct work_struct *work)
diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 4ba7b038..ad2c98a 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -926,7 +926,7 @@
 static int rt2400pci_set_state(struct rt2x00_dev *rt2x00dev,
 			       enum dev_state state)
 {
-	u32 reg;
+	u32 reg, reg2;
 	unsigned int i;
 	char put_to_sleep;
 	char bbp_state;
@@ -947,11 +947,12 @@
 	 * device has entered the correct state.
 	 */
 	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-		rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
-		bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
-		rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
+		rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg2);
+		bbp_state = rt2x00_get_field32(reg2, PWRCSR1_BBP_CURR_STATE);
+		rf_state = rt2x00_get_field32(reg2, PWRCSR1_RF_CURR_STATE);
 		if (bbp_state == state && rf_state == state)
 			return 0;
+		rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
 		msleep(10);
 	}
 
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index 89d132d..41da3d2 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -1084,7 +1084,7 @@
 static int rt2500pci_set_state(struct rt2x00_dev *rt2x00dev,
 			       enum dev_state state)
 {
-	u32 reg;
+	u32 reg, reg2;
 	unsigned int i;
 	char put_to_sleep;
 	char bbp_state;
@@ -1105,11 +1105,12 @@
 	 * device has entered the correct state.
 	 */
 	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-		rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg);
-		bbp_state = rt2x00_get_field32(reg, PWRCSR1_BBP_CURR_STATE);
-		rf_state = rt2x00_get_field32(reg, PWRCSR1_RF_CURR_STATE);
+		rt2x00pci_register_read(rt2x00dev, PWRCSR1, &reg2);
+		bbp_state = rt2x00_get_field32(reg2, PWRCSR1_BBP_CURR_STATE);
+		rf_state = rt2x00_get_field32(reg2, PWRCSR1_RF_CURR_STATE);
 		if (bbp_state == state && rf_state == state)
 			return 0;
+		rt2x00pci_register_write(rt2x00dev, PWRCSR1, reg);
 		msleep(10);
 	}
 
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 0f8b84b..6991613 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -413,7 +413,7 @@
 	 */
 	rt2x00_desc_read(txi, 0, &word);
 	rt2x00_set_field32(&word, TXINFO_W0_USB_DMA_TX_PKT_LEN,
-			   skb->len + TXWI_DESC_SIZE);
+			   skb->len - TXINFO_DESC_SIZE);
 	rt2x00_set_field32(&word, TXINFO_W0_WIV,
 			   !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags));
 	rt2x00_set_field32(&word, TXINFO_W0_QSEL, 2);
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index a016f7c..f71eee6 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -206,7 +206,7 @@
 	/*
 	 * Free irq line.
 	 */
-	free_irq(to_pci_dev(rt2x00dev->dev)->irq, rt2x00dev);
+	free_irq(rt2x00dev->irq, rt2x00dev);
 
 	/*
 	 * Free DMA
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 2e3076f..6a74baf 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1689,7 +1689,7 @@
 
 static int rt61pci_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
 {
-	u32 reg;
+	u32 reg, reg2;
 	unsigned int i;
 	char put_to_sleep;
 
@@ -1706,10 +1706,11 @@
 	 * device has entered the correct state.
 	 */
 	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-		rt2x00pci_register_read(rt2x00dev, MAC_CSR12, &reg);
-		state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
+		rt2x00pci_register_read(rt2x00dev, MAC_CSR12, &reg2);
+		state = rt2x00_get_field32(reg2, MAC_CSR12_BBP_CURRENT_STATE);
 		if (state == !put_to_sleep)
 			return 0;
+		rt2x00pci_register_write(rt2x00dev, MAC_CSR12, reg);
 		msleep(10);
 	}
 
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index e35bd19..6e0d82e 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1366,7 +1366,7 @@
 
 static int rt73usb_set_state(struct rt2x00_dev *rt2x00dev, enum dev_state state)
 {
-	u32 reg;
+	u32 reg, reg2;
 	unsigned int i;
 	char put_to_sleep;
 
@@ -1383,10 +1383,11 @@
 	 * device has entered the correct state.
 	 */
 	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
-		rt2x00usb_register_read(rt2x00dev, MAC_CSR12, &reg);
-		state = rt2x00_get_field32(reg, MAC_CSR12_BBP_CURRENT_STATE);
+		rt2x00usb_register_read(rt2x00dev, MAC_CSR12, &reg2);
+		state = rt2x00_get_field32(reg2, MAC_CSR12_BBP_CURRENT_STATE);
 		if (state == !put_to_sleep)
 			return 0;
+		rt2x00usb_register_write(rt2x00dev, MAC_CSR12, reg);
 		msleep(10);
 	}
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_rx.c b/drivers/net/wireless/wl12xx/wl1271_rx.c
index 57f4bfd..b98fb64 100644
--- a/drivers/net/wireless/wl12xx/wl1271_rx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_rx.c
@@ -113,6 +113,8 @@
 	wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb, skb->len,
 		     beacon ? "beacon" : "");
 
+	skb_trim(skb, skb->len - desc->pad_len);
+
 	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 	ieee80211_rx_ni(wl->hw, skb);
 }
diff --git a/drivers/parport/parport_amiga.c b/drivers/parport/parport_amiga.c
index 1586e1c..8bef6d6 100644
--- a/drivers/parport/parport_amiga.c
+++ b/drivers/parport/parport_amiga.c
@@ -18,6 +18,8 @@
 #include <linux/parport.h>
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
 #include <asm/setup.h>
 #include <asm/amigahw.h>
 #include <asm/irq.h>
@@ -31,7 +33,6 @@
 #define DPRINTK(x...)	do { } while (0)
 #endif
 
-static struct parport *this_port = NULL;
 
 static void amiga_write_data(struct parport *p, unsigned char data)
 {
@@ -227,18 +228,11 @@
 
 /* ----------- Initialisation code --------------------------------- */
 
-static int __init parport_amiga_init(void)
+static int __init amiga_parallel_probe(struct platform_device *pdev)
 {
 	struct parport *p;
 	int err;
 
-	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_PARALLEL))
-		return -ENODEV;
-
-	err = -EBUSY;
-	if (!request_mem_region(CIAA_PHYSADDR-1+0x100, 0x100, "parallel"))
-		goto out_mem;
-
 	ciaa.ddrb = 0xff;
 	ciab.ddra &= 0xf8;
 	mb();
@@ -246,41 +240,63 @@
 	p = parport_register_port((unsigned long)&ciaa.prb, IRQ_AMIGA_CIAA_FLG,
 				   PARPORT_DMA_NONE, &pp_amiga_ops);
 	if (!p)
-		goto out_port;
+		return -EBUSY;
 
-	err = request_irq(IRQ_AMIGA_CIAA_FLG, parport_irq_handler, 0, p->name, p);
+	err = request_irq(IRQ_AMIGA_CIAA_FLG, parport_irq_handler, 0, p->name,
+			  p);
 	if (err)
 		goto out_irq;
 
-	this_port = p;
 	printk(KERN_INFO "%s: Amiga built-in port using irq\n", p->name);
 	/* XXX: set operating mode */
 	parport_announce_port(p);
 
+	platform_set_drvdata(pdev, p);
+
 	return 0;
 
 out_irq:
 	parport_put_port(p);
-out_port:
-	release_mem_region(CIAA_PHYSADDR-1+0x100, 0x100);
-out_mem:
 	return err;
 }
 
-static void __exit parport_amiga_exit(void)
+static int __exit amiga_parallel_remove(struct platform_device *pdev)
 {
-	parport_remove_port(this_port);
-	if (this_port->irq != PARPORT_IRQ_NONE)
-		free_irq(IRQ_AMIGA_CIAA_FLG, this_port);
-	parport_put_port(this_port);
-	release_mem_region(CIAA_PHYSADDR-1+0x100, 0x100);
+	struct parport *port = platform_get_drvdata(pdev);
+
+	parport_remove_port(port);
+	if (port->irq != PARPORT_IRQ_NONE)
+		free_irq(IRQ_AMIGA_CIAA_FLG, port);
+	parport_put_port(port);
+	platform_set_drvdata(pdev, NULL);
+	return 0;
 }
 
+static struct platform_driver amiga_parallel_driver = {
+	.remove = __exit_p(amiga_parallel_remove),
+	.driver   = {
+		.name	= "amiga-parallel",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amiga_parallel_init(void)
+{
+	return platform_driver_probe(&amiga_parallel_driver,
+				     amiga_parallel_probe);
+}
+
+module_init(amiga_parallel_init);
+
+static void __exit amiga_parallel_exit(void)
+{
+	platform_driver_unregister(&amiga_parallel_driver);
+}
+
+module_exit(amiga_parallel_exit);
 
 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 MODULE_DESCRIPTION("Parport Driver for Amiga builtin Port");
 MODULE_SUPPORTED_DEVICE("Amiga builtin Parallel Port");
 MODULE_LICENSE("GPL");
-
-module_init(parport_amiga_init)
-module_exit(parport_amiga_exit)
+MODULE_ALIAS("platform:amiga-parallel");
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index 7aaae2d..80c11d1 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -130,4 +130,21 @@
 }
 #endif
 
+#ifdef CONFIG_ACPI_APEI
+extern int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
+#else
+static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
+{
+	if (pci_dev->__aer_firmware_first_valid)
+		return pci_dev->__aer_firmware_first;
+	return 0;
+}
+#endif
+
+static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev,
+						 int enable)
+{
+	pci_dev->__aer_firmware_first = !!enable;
+	pci_dev->__aer_firmware_first_valid = 1;
+}
 #endif /* _AERDRV_H_ */
diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c
index 0481408..f278d7b 100644
--- a/drivers/pci/pcie/aer/aerdrv_acpi.c
+++ b/drivers/pci/pcie/aer/aerdrv_acpi.c
@@ -16,6 +16,7 @@
 #include <linux/acpi.h>
 #include <linux/pci-acpi.h>
 #include <linux/delay.h>
+#include <acpi/apei.h>
 #include "aerdrv.h"
 
 /**
@@ -53,3 +54,79 @@
 
 	return 0;
 }
+
+#ifdef CONFIG_ACPI_APEI
+static inline int hest_match_pci(struct acpi_hest_aer_common *p,
+				 struct pci_dev *pci)
+{
+	return	(0           == pci_domain_nr(pci->bus) &&
+		 p->bus      == pci->bus->number &&
+		 p->device   == PCI_SLOT(pci->devfn) &&
+		 p->function == PCI_FUNC(pci->devfn));
+}
+
+struct aer_hest_parse_info {
+	struct pci_dev *pci_dev;
+	int firmware_first;
+};
+
+static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data)
+{
+	struct aer_hest_parse_info *info = data;
+	struct acpi_hest_aer_common *p;
+	u8 pcie_type = 0;
+	u8 bridge = 0;
+	int ff = 0;
+
+	switch (hest_hdr->type) {
+	case ACPI_HEST_TYPE_AER_ROOT_PORT:
+		pcie_type = PCI_EXP_TYPE_ROOT_PORT;
+		break;
+	case ACPI_HEST_TYPE_AER_ENDPOINT:
+		pcie_type = PCI_EXP_TYPE_ENDPOINT;
+		break;
+	case ACPI_HEST_TYPE_AER_BRIDGE:
+		if ((info->pci_dev->class >> 16) == PCI_BASE_CLASS_BRIDGE)
+			bridge = 1;
+		break;
+	default:
+		return 0;
+	}
+
+	p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
+	if (p->flags & ACPI_HEST_GLOBAL) {
+		if ((info->pci_dev->is_pcie &&
+		     info->pci_dev->pcie_type == pcie_type) || bridge)
+			ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+	} else
+		if (hest_match_pci(p, info->pci_dev))
+			ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+	info->firmware_first = ff;
+
+	return 0;
+}
+
+static void aer_set_firmware_first(struct pci_dev *pci_dev)
+{
+	int rc;
+	struct aer_hest_parse_info info = {
+		.pci_dev	= pci_dev,
+		.firmware_first	= 0,
+	};
+
+	rc = apei_hest_parse(aer_hest_parse, &info);
+
+	if (rc)
+		pci_dev->__aer_firmware_first = 0;
+	else
+		pci_dev->__aer_firmware_first = info.firmware_first;
+	pci_dev->__aer_firmware_first_valid = 1;
+}
+
+int pcie_aer_get_firmware_first(struct pci_dev *dev)
+{
+	if (!dev->__aer_firmware_first_valid)
+		aer_set_firmware_first(dev);
+	return dev->__aer_firmware_first;
+}
+#endif
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index df2d686..8af4f61 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -36,7 +36,7 @@
 	u16 reg16 = 0;
 	int pos;
 
-	if (dev->aer_firmware_first)
+	if (pcie_aer_get_firmware_first(dev))
 		return -EIO;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
@@ -63,7 +63,7 @@
 	u16 reg16 = 0;
 	int pos;
 
-	if (dev->aer_firmware_first)
+	if (pcie_aer_get_firmware_first(dev))
 		return -EIO;
 
 	pos = pci_pcie_cap(dev);
@@ -771,7 +771,7 @@
  */
 int aer_init(struct pcie_device *dev)
 {
-	if (dev->port->aer_firmware_first) {
+	if (pcie_aer_get_firmware_first(dev->port)) {
 		dev_printk(KERN_DEBUG, &dev->device,
 			   "PCIe errors handled by platform firmware.\n");
 		goto out;
@@ -785,7 +785,7 @@
 	if (forceload) {
 		dev_printk(KERN_DEBUG, &dev->device,
 			   "aerdrv forceload requested.\n");
-		dev->port->aer_firmware_first = 0;
+		pcie_aer_force_firmware_first(dev->port, 0);
 		return 0;
 	}
 	return -ENXIO;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index c82548a..f4adba2 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -10,7 +10,6 @@
 #include <linux/module.h>
 #include <linux/cpumask.h>
 #include <linux/pci-aspm.h>
-#include <acpi/acpi_hest.h>
 #include "pci.h"
 
 #define CARDBUS_LATENCY_TIMER	176	/* secondary latency timer */
@@ -904,12 +903,6 @@
 		pdev->is_hotplug_bridge = 1;
 }
 
-static void set_pci_aer_firmware_first(struct pci_dev *pdev)
-{
-	if (acpi_hest_firmware_first_pci(pdev))
-		pdev->aer_firmware_first = 1;
-}
-
 #define LEGACY_IO_RESOURCE	(IORESOURCE_IO | IORESOURCE_PCI_FIXED)
 
 /**
@@ -939,7 +932,6 @@
 	dev->multifunction = !!(hdr_type & 0x80);
 	dev->error_state = pci_channel_io_normal;
 	set_pcie_port_type(dev);
-	set_pci_aer_firmware_first(dev);
 
 	list_for_each_entry(slot, &dev->bus->slots, list)
 		if (PCI_SLOT(dev->devfn) == slot->number)
diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig
index c32822a..070211a 100644
--- a/drivers/rapidio/Kconfig
+++ b/drivers/rapidio/Kconfig
@@ -8,3 +8,27 @@
 	---help---
 	  Amount of time a discovery node waits for a host to complete
 	  enumeration before giving up.
+
+config RAPIDIO_ENABLE_RX_TX_PORTS
+	bool "Enable RapidIO Input/Output Ports"
+	depends on RAPIDIO
+	---help---
+	  The RapidIO specification describes a Output port transmit
+	  enable and a Input port receive enable. The recommended state
+	  for Input ports and Output ports should be disabled. When
+	  this switch is set the RapidIO subsystem will enable all
+	  ports for Input/Output direction to allow other traffic
+	  than Maintenance transfers.
+
+source "drivers/rapidio/switches/Kconfig"
+
+config RAPIDIO_DEBUG
+	bool "RapidIO subsystem debug messages"
+	depends on RAPIDIO
+	help
+	  Say Y here if you want the RapidIO subsystem to produce a bunch of
+	  debug messages to the system log. Select this if you are having a
+	  problem with the RapidIO subsystem and want to see more of what is
+	  going on.
+
+	  If you are unsure about this, say N here.
diff --git a/drivers/rapidio/Makefile b/drivers/rapidio/Makefile
index 7c0e181..b6139fe 100644
--- a/drivers/rapidio/Makefile
+++ b/drivers/rapidio/Makefile
@@ -4,3 +4,7 @@
 obj-y += rio.o rio-access.o rio-driver.o rio-scan.o rio-sysfs.o
 
 obj-$(CONFIG_RAPIDIO)		+= switches/
+
+ifeq ($(CONFIG_RAPIDIO_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index 4541509..8070e07 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -4,6 +4,14 @@
  * Copyright 2005 MontaVista Software, Inc.
  * Matt Porter <mporter@kernel.crashing.org>
  *
+ * Copyright 2009 Integrated Device Technology, Inc.
+ * Alex Bounine <alexandre.bounine@idt.com>
+ * - Added Port-Write/Error Management initialization and handling
+ *
+ * Copyright 2009 Sysgo AG
+ * Thomas Moll <thomas.moll@sysgo.com>
+ * - Added Input- Output- enable functionality, to allow full communication
+ *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
@@ -31,15 +39,16 @@
 LIST_HEAD(rio_devices);
 static LIST_HEAD(rio_switches);
 
-#define RIO_ENUM_CMPL_MAGIC	0xdeadbeef
-
 static void rio_enum_timeout(unsigned long);
 
+static void rio_init_em(struct rio_dev *rdev);
+
 DEFINE_SPINLOCK(rio_global_list_lock);
 
 static int next_destid = 0;
 static int next_switchid = 0;
 static int next_net = 0;
+static int next_comptag;
 
 static struct timer_list rio_enum_timer =
 TIMER_INITIALIZER(rio_enum_timeout, 0, 0);
@@ -52,12 +61,6 @@
 	-1,
 };
 
-static int rio_sport_phys_table[] = {
-	RIO_EFB_PAR_EP_FREE_ID,
-	RIO_EFB_SER_EP_FREE_ID,
-	-1,
-};
-
 /**
  * rio_get_device_id - Get the base/extended device id for a device
  * @port: RIO master port
@@ -118,12 +121,26 @@
 	u32 result;
 	int ret = 0;
 
-	/* Write component tag CSR magic complete value */
-	rio_local_write_config_32(port, RIO_COMPONENT_TAG_CSR,
-				  RIO_ENUM_CMPL_MAGIC);
-	list_for_each_entry(rdev, &rio_devices, global_list)
-	    rio_write_config_32(rdev, RIO_COMPONENT_TAG_CSR,
-				RIO_ENUM_CMPL_MAGIC);
+	/* Assign component tag to all devices */
+	next_comptag = 1;
+	rio_local_write_config_32(port, RIO_COMPONENT_TAG_CSR, next_comptag++);
+
+	list_for_each_entry(rdev, &rio_devices, global_list) {
+		/* Mark device as discovered */
+		rio_read_config_32(rdev,
+				   rdev->phys_efptr + RIO_PORT_GEN_CTL_CSR,
+				   &result);
+		rio_write_config_32(rdev,
+				    rdev->phys_efptr + RIO_PORT_GEN_CTL_CSR,
+				    result | RIO_PORT_GEN_DISCOVERED);
+
+		rio_write_config_32(rdev, RIO_COMPONENT_TAG_CSR, next_comptag);
+		rdev->comp_tag = next_comptag++;
+		if (next_comptag >= 0x10000) {
+			pr_err("RIO: Component Tag Counter Overflow\n");
+			break;
+		}
+	}
 
 	/* Release host device id locks */
 	rio_local_write_config_32(port, RIO_HOST_DID_LOCK_CSR,
@@ -229,27 +246,37 @@
 }
 
 /**
- * rio_route_set_ops- Sets routing operations for a particular vendor switch
+ * rio_switch_init - Sets switch operations for a particular vendor switch
  * @rdev: RIO device
+ * @do_enum: Enumeration/Discovery mode flag
  *
- * Searches the RIO route ops table for known switch types. If the vid
- * and did match a switch table entry, then set the add_entry() and
- * get_entry() ops to the table entry values.
+ * Searches the RIO switch ops table for known switch types. If the vid
+ * and did match a switch table entry, then call switch initialization
+ * routine to setup switch-specific routines.
  */
-static void rio_route_set_ops(struct rio_dev *rdev)
+static void rio_switch_init(struct rio_dev *rdev, int do_enum)
 {
-	struct rio_route_ops *cur = __start_rio_route_ops;
-	struct rio_route_ops *end = __end_rio_route_ops;
+	struct rio_switch_ops *cur = __start_rio_switch_ops;
+	struct rio_switch_ops *end = __end_rio_switch_ops;
 
 	while (cur < end) {
 		if ((cur->vid == rdev->vid) && (cur->did == rdev->did)) {
-			pr_debug("RIO: adding routing ops for %s\n", rio_name(rdev));
-			rdev->rswitch->add_entry = cur->add_hook;
-			rdev->rswitch->get_entry = cur->get_hook;
+			pr_debug("RIO: calling init routine for %s\n",
+				 rio_name(rdev));
+			cur->init_hook(rdev, do_enum);
+			break;
 		}
 		cur++;
 	}
 
+	if ((cur >= end) && (rdev->pef & RIO_PEF_STD_RT)) {
+		pr_debug("RIO: adding STD routing ops for %s\n",
+			rio_name(rdev));
+		rdev->rswitch->add_entry = rio_std_route_add_entry;
+		rdev->rswitch->get_entry = rio_std_route_get_entry;
+		rdev->rswitch->clr_table = rio_std_route_clr_table;
+	}
+
 	if (!rdev->rswitch->add_entry || !rdev->rswitch->get_entry)
 		printk(KERN_ERR "RIO: missing routing ops for %s\n",
 		       rio_name(rdev));
@@ -281,6 +308,65 @@
 }
 
 /**
+ * rio_enable_rx_tx_port - enable input reciever and output transmitter of
+ * given port
+ * @port: Master port associated with the RIO network
+ * @local: local=1 select local port otherwise a far device is reached
+ * @destid: Destination ID of the device to check host bit
+ * @hopcount: Number of hops to reach the target
+ * @port_num: Port (-number on switch) to enable on a far end device
+ *
+ * Returns 0 or 1 from on General Control Command and Status Register
+ * (EXT_PTR+0x3C)
+ */
+inline int rio_enable_rx_tx_port(struct rio_mport *port,
+				 int local, u16 destid,
+				 u8 hopcount, u8 port_num) {
+#ifdef CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS
+	u32 regval;
+	u32 ext_ftr_ptr;
+
+	/*
+	* enable rx input tx output port
+	*/
+	pr_debug("rio_enable_rx_tx_port(local = %d, destid = %d, hopcount = "
+		 "%d, port_num = %d)\n", local, destid, hopcount, port_num);
+
+	ext_ftr_ptr = rio_mport_get_physefb(port, local, destid, hopcount);
+
+	if (local) {
+		rio_local_read_config_32(port, ext_ftr_ptr +
+				RIO_PORT_N_CTL_CSR(0),
+				&regval);
+	} else {
+		if (rio_mport_read_config_32(port, destid, hopcount,
+		ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), &regval) < 0)
+			return -EIO;
+	}
+
+	if (regval & RIO_PORT_N_CTL_P_TYP_SER) {
+		/* serial */
+		regval = regval | RIO_PORT_N_CTL_EN_RX_SER
+				| RIO_PORT_N_CTL_EN_TX_SER;
+	} else {
+		/* parallel */
+		regval = regval | RIO_PORT_N_CTL_EN_RX_PAR
+				| RIO_PORT_N_CTL_EN_TX_PAR;
+	}
+
+	if (local) {
+		rio_local_write_config_32(port, ext_ftr_ptr +
+					  RIO_PORT_N_CTL_CSR(0), regval);
+	} else {
+		if (rio_mport_write_config_32(port, destid, hopcount,
+		    ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), regval) < 0)
+			return -EIO;
+	}
+#endif
+	return 0;
+}
+
+/**
  * rio_setup_device- Allocates and sets up a RIO device
  * @net: RIO network
  * @port: Master port to send transactions
@@ -325,8 +411,14 @@
 	rdev->asm_rev = result >> 16;
 	rio_mport_read_config_32(port, destid, hopcount, RIO_PEF_CAR,
 				 &rdev->pef);
-	if (rdev->pef & RIO_PEF_EXT_FEATURES)
+	if (rdev->pef & RIO_PEF_EXT_FEATURES) {
 		rdev->efptr = result & 0xffff;
+		rdev->phys_efptr = rio_mport_get_physefb(port, 0, destid,
+							 hopcount);
+
+		rdev->em_efptr = rio_mport_get_feature(port, 0, destid,
+						hopcount, RIO_EFB_ERR_MGMNT);
+	}
 
 	rio_mport_read_config_32(port, destid, hopcount, RIO_SRC_OPS_CAR,
 				 &rdev->src_ops);
@@ -349,12 +441,13 @@
 	if (rio_is_switch(rdev)) {
 		rio_mport_read_config_32(port, destid, hopcount,
 					 RIO_SWP_INFO_CAR, &rdev->swpinfo);
-		rswitch = kmalloc(sizeof(struct rio_switch), GFP_KERNEL);
+		rswitch = kzalloc(sizeof(struct rio_switch), GFP_KERNEL);
 		if (!rswitch)
 			goto cleanup;
 		rswitch->switchid = next_switchid;
 		rswitch->hopcount = hopcount;
 		rswitch->destid = destid;
+		rswitch->port_ok = 0;
 		rswitch->route_table = kzalloc(sizeof(u8)*
 					RIO_MAX_ROUTE_ENTRIES(port->sys_size),
 					GFP_KERNEL);
@@ -367,13 +460,22 @@
 		rdev->rswitch = rswitch;
 		dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id,
 			     rdev->rswitch->switchid);
-		rio_route_set_ops(rdev);
+		rio_switch_init(rdev, do_enum);
+
+		if (do_enum && rdev->rswitch->clr_table)
+			rdev->rswitch->clr_table(port, destid, hopcount,
+						 RIO_GLOBAL_TABLE);
 
 		list_add_tail(&rswitch->node, &rio_switches);
 
-	} else
+	} else {
+		if (do_enum)
+			/*Enable Input Output Port (transmitter reviever)*/
+			rio_enable_rx_tx_port(port, 0, destid, hopcount, 0);
+
 		dev_set_name(&rdev->dev, "%02x:e:%04x", rdev->net->id,
 			     rdev->destid);
+	}
 
 	rdev->dev.bus = &rio_bus_type;
 
@@ -414,23 +516,29 @@
  *
  * Reads the port error status CSR for a particular switch port to
  * determine if the port has an active link.  Returns
- * %PORT_N_ERR_STS_PORT_OK if the port is active or %0 if it is
+ * %RIO_PORT_N_ERR_STS_PORT_OK if the port is active or %0 if it is
  * inactive.
  */
 static int
 rio_sport_is_active(struct rio_mport *port, u16 destid, u8 hopcount, int sport)
 {
-	u32 result;
+	u32 result = 0;
 	u32 ext_ftr_ptr;
 
-	int *entry = rio_sport_phys_table;
+	ext_ftr_ptr = rio_mport_get_efb(port, 0, destid, hopcount, 0);
 
-	do {
-		if ((ext_ftr_ptr =
-		     rio_mport_get_feature(port, 0, destid, hopcount, *entry)))
-
+	while (ext_ftr_ptr) {
+		rio_mport_read_config_32(port, destid, hopcount,
+					 ext_ftr_ptr, &result);
+		result = RIO_GET_BLOCK_ID(result);
+		if ((result == RIO_EFB_SER_EP_FREE_ID) ||
+		    (result == RIO_EFB_SER_EP_FREE_ID_V13P) ||
+		    (result == RIO_EFB_SER_EP_FREC_ID))
 			break;
-	} while (*++entry >= 0);
+
+		ext_ftr_ptr = rio_mport_get_efb(port, 0, destid, hopcount,
+						ext_ftr_ptr);
+	}
 
 	if (ext_ftr_ptr)
 		rio_mport_read_config_32(port, destid, hopcount,
@@ -438,7 +546,81 @@
 					 RIO_PORT_N_ERR_STS_CSR(sport),
 					 &result);
 
-	return (result & PORT_N_ERR_STS_PORT_OK);
+	return result & RIO_PORT_N_ERR_STS_PORT_OK;
+}
+
+/**
+ * rio_lock_device - Acquires host device lock for specified device
+ * @port: Master port to send transaction
+ * @destid: Destination ID for device/switch
+ * @hopcount: Hopcount to reach switch
+ * @wait_ms: Max wait time in msec (0 = no timeout)
+ *
+ * Attepts to acquire host device lock for specified device
+ * Returns 0 if device lock acquired or EINVAL if timeout expires.
+ */
+static int
+rio_lock_device(struct rio_mport *port, u16 destid, u8 hopcount, int wait_ms)
+{
+	u32 result;
+	int tcnt = 0;
+
+	/* Attempt to acquire device lock */
+	rio_mport_write_config_32(port, destid, hopcount,
+				  RIO_HOST_DID_LOCK_CSR, port->host_deviceid);
+	rio_mport_read_config_32(port, destid, hopcount,
+				 RIO_HOST_DID_LOCK_CSR, &result);
+
+	while (result != port->host_deviceid) {
+		if (wait_ms != 0 && tcnt == wait_ms) {
+			pr_debug("RIO: timeout when locking device %x:%x\n",
+				destid, hopcount);
+			return -EINVAL;
+		}
+
+		/* Delay a bit */
+		mdelay(1);
+		tcnt++;
+		/* Try to acquire device lock again */
+		rio_mport_write_config_32(port, destid,
+			hopcount,
+			RIO_HOST_DID_LOCK_CSR,
+			port->host_deviceid);
+		rio_mport_read_config_32(port, destid,
+			hopcount,
+			RIO_HOST_DID_LOCK_CSR, &result);
+	}
+
+	return 0;
+}
+
+/**
+ * rio_unlock_device - Releases host device lock for specified device
+ * @port: Master port to send transaction
+ * @destid: Destination ID for device/switch
+ * @hopcount: Hopcount to reach switch
+ *
+ * Returns 0 if device lock released or EINVAL if fails.
+ */
+static int
+rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount)
+{
+	u32 result;
+
+	/* Release device lock */
+	rio_mport_write_config_32(port, destid,
+				  hopcount,
+				  RIO_HOST_DID_LOCK_CSR,
+				  port->host_deviceid);
+	rio_mport_read_config_32(port, destid, hopcount,
+		RIO_HOST_DID_LOCK_CSR, &result);
+	if ((result & 0xffff) != 0xffff) {
+		pr_debug("RIO: badness when releasing device lock %x:%x\n",
+			 destid, hopcount);
+		return -EINVAL;
+	}
+
+	return 0;
 }
 
 /**
@@ -448,6 +630,7 @@
  * @table: Routing table ID
  * @route_destid: Destination ID to be routed
  * @route_port: Port number to be routed
+ * @lock: lock switch device flag
  *
  * Calls the switch specific add_entry() method to add a route entry
  * on a switch. The route table can be specified using the @table
@@ -456,12 +639,26 @@
  * %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL
  * on failure.
  */
-static int rio_route_add_entry(struct rio_mport *mport, struct rio_switch *rswitch,
-			       u16 table, u16 route_destid, u8 route_port)
+static int
+rio_route_add_entry(struct rio_mport *mport, struct rio_switch *rswitch,
+		    u16 table, u16 route_destid, u8 route_port, int lock)
 {
-	return rswitch->add_entry(mport, rswitch->destid,
+	int rc;
+
+	if (lock) {
+		rc = rio_lock_device(mport, rswitch->destid,
+				     rswitch->hopcount, 1000);
+		if (rc)
+			return rc;
+	}
+
+	rc = rswitch->add_entry(mport, rswitch->destid,
 					rswitch->hopcount, table,
 					route_destid, route_port);
+	if (lock)
+		rio_unlock_device(mport, rswitch->destid, rswitch->hopcount);
+
+	return rc;
 }
 
 /**
@@ -471,6 +668,7 @@
  * @table: Routing table ID
  * @route_destid: Destination ID to be routed
  * @route_port: Pointer to read port number into
+ * @lock: lock switch device flag
  *
  * Calls the switch specific get_entry() method to read a route entry
  * in a switch. The route table can be specified using the @table
@@ -481,11 +679,24 @@
  */
 static int
 rio_route_get_entry(struct rio_mport *mport, struct rio_switch *rswitch, u16 table,
-		    u16 route_destid, u8 * route_port)
+		    u16 route_destid, u8 *route_port, int lock)
 {
-	return rswitch->get_entry(mport, rswitch->destid,
+	int rc;
+
+	if (lock) {
+		rc = rio_lock_device(mport, rswitch->destid,
+				     rswitch->hopcount, 1000);
+		if (rc)
+			return rc;
+	}
+
+	rc = rswitch->get_entry(mport, rswitch->destid,
 					rswitch->hopcount, table,
 					route_destid, route_port);
+	if (lock)
+		rio_unlock_device(mport, rswitch->destid, rswitch->hopcount);
+
+	return rc;
 }
 
 /**
@@ -625,14 +836,14 @@
 		sw_inport = rio_get_swpinfo_inport(port,
 				RIO_ANY_DESTID(port->sys_size), hopcount);
 		rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
-				    port->host_deviceid, sw_inport);
+				    port->host_deviceid, sw_inport, 0);
 		rdev->rswitch->route_table[port->host_deviceid] = sw_inport;
 
 		for (destid = 0; destid < next_destid; destid++) {
 			if (destid == port->host_deviceid)
 				continue;
 			rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
-					    destid, sw_inport);
+					    destid, sw_inport, 0);
 			rdev->rswitch->route_table[destid] = sw_inport;
 		}
 
@@ -644,8 +855,15 @@
 		    rio_name(rdev), rdev->vid, rdev->did, num_ports);
 		sw_destid = next_destid;
 		for (port_num = 0; port_num < num_ports; port_num++) {
-			if (sw_inport == port_num)
+			/*Enable Input Output Port (transmitter reviever)*/
+			rio_enable_rx_tx_port(port, 0,
+					      RIO_ANY_DESTID(port->sys_size),
+					      hopcount, port_num);
+
+			if (sw_inport == port_num) {
+				rdev->rswitch->port_ok |= (1 << port_num);
 				continue;
+			}
 
 			cur_destid = next_destid;
 
@@ -655,10 +873,11 @@
 				pr_debug(
 				    "RIO: scanning device on port %d\n",
 				    port_num);
+				rdev->rswitch->port_ok |= (1 << port_num);
 				rio_route_add_entry(port, rdev->rswitch,
 						RIO_GLOBAL_TABLE,
 						RIO_ANY_DESTID(port->sys_size),
-						port_num);
+						port_num, 0);
 
 				if (rio_enum_peer(net, port, hopcount + 1) < 0)
 					return -1;
@@ -672,15 +891,35 @@
 						rio_route_add_entry(port, rdev->rswitch,
 								    RIO_GLOBAL_TABLE,
 								    destid,
-								    port_num);
+								    port_num,
+								    0);
 						rdev->rswitch->
 						    route_table[destid] =
 						    port_num;
 					}
 				}
+			} else {
+				/* If switch supports Error Management,
+				 * set PORT_LOCKOUT bit for unused port
+				 */
+				if (rdev->em_efptr)
+					rio_set_port_lockout(rdev, port_num, 1);
+
+				rdev->rswitch->port_ok &= ~(1 << port_num);
 			}
 		}
 
+		/* Direct Port-write messages to the enumeratiing host */
+		if ((rdev->src_ops & RIO_SRC_OPS_PORT_WRITE) &&
+		    (rdev->em_efptr)) {
+			rio_write_config_32(rdev,
+					rdev->em_efptr + RIO_EM_PW_TGT_DEVID,
+					(port->host_deviceid << 16) |
+					(port->sys_size << 15));
+		}
+
+		rio_init_em(rdev);
+
 		/* Check for empty switch */
 		if (next_destid == sw_destid) {
 			next_destid++;
@@ -700,21 +939,16 @@
  * rio_enum_complete- Tests if enumeration of a network is complete
  * @port: Master port to send transaction
  *
- * Tests the Component Tag CSR for presence of the magic enumeration
- * complete flag. Return %1 if enumeration is complete or %0 if
+ * Tests the Component Tag CSR for non-zero value (enumeration
+ * complete flag). Return %1 if enumeration is complete or %0 if
  * enumeration is incomplete.
  */
 static int rio_enum_complete(struct rio_mport *port)
 {
 	u32 tag_csr;
-	int ret = 0;
 
 	rio_local_read_config_32(port, RIO_COMPONENT_TAG_CSR, &tag_csr);
-
-	if (tag_csr == RIO_ENUM_CMPL_MAGIC)
-		ret = 1;
-
-	return ret;
+	return (tag_csr & 0xffff) ? 1 : 0;
 }
 
 /**
@@ -763,17 +997,21 @@
 				pr_debug(
 				    "RIO: scanning device on port %d\n",
 				    port_num);
+
+				rio_lock_device(port, destid, hopcount, 1000);
+
 				for (ndestid = 0;
 				     ndestid < RIO_ANY_DESTID(port->sys_size);
 				     ndestid++) {
 					rio_route_get_entry(port, rdev->rswitch,
 							    RIO_GLOBAL_TABLE,
 							    ndestid,
-							    &route_port);
+							    &route_port, 0);
 					if (route_port == port_num)
 						break;
 				}
 
+				rio_unlock_device(port, destid, hopcount);
 				if (rio_disc_peer
 				    (net, port, ndestid, hopcount + 1) < 0)
 					return -1;
@@ -792,7 +1030,7 @@
  *
  * Reads the port error status CSR for the master port to
  * determine if the port has an active link.  Returns
- * %PORT_N_ERR_STS_PORT_OK if the  master port is active
+ * %RIO_PORT_N_ERR_STS_PORT_OK if the  master port is active
  * or %0 if it is inactive.
  */
 static int rio_mport_is_active(struct rio_mport *port)
@@ -813,7 +1051,7 @@
 					 RIO_PORT_N_ERR_STS_CSR(port->index),
 					 &result);
 
-	return (result & PORT_N_ERR_STS_PORT_OK);
+	return result & RIO_PORT_N_ERR_STS_PORT_OK;
 }
 
 /**
@@ -866,12 +1104,17 @@
 				continue;
 
 			if (RIO_INVALID_ROUTE == rswitch->route_table[destid]) {
+				/* Skip if destid ends in empty switch*/
+				if (rswitch->destid == destid)
+					continue;
 
 				sport = rio_get_swpinfo_inport(port,
 						rswitch->destid, rswitch->hopcount);
 
 				if (rswitch->add_entry)	{
-					rio_route_add_entry(port, rswitch, RIO_GLOBAL_TABLE, destid, sport);
+					rio_route_add_entry(port, rswitch,
+						RIO_GLOBAL_TABLE, destid,
+						sport, 0);
 					rswitch->route_table[destid] = sport;
 				}
 			}
@@ -880,6 +1123,32 @@
 }
 
 /**
+ * rio_init_em - Initializes RIO Error Management (for switches)
+ * @rdev: RIO device
+ *
+ * For each enumerated switch, call device-specific error management
+ * initialization routine (if supplied by the switch driver).
+ */
+static void rio_init_em(struct rio_dev *rdev)
+{
+	if (rio_is_switch(rdev) && (rdev->em_efptr) &&
+	    (rdev->rswitch->em_init)) {
+		rdev->rswitch->em_init(rdev);
+	}
+}
+
+/**
+ * rio_pw_enable - Enables/disables port-write handling by a master port
+ * @port: Master port associated with port-write handling
+ * @enable:  1=enable,  0=disable
+ */
+static void rio_pw_enable(struct rio_mport *port, int enable)
+{
+	if (port->ops->pwenable)
+		port->ops->pwenable(port, enable);
+}
+
+/**
  * rio_enum_mport- Start enumeration through a master port
  * @mport: Master port to send transactions
  *
@@ -911,6 +1180,10 @@
 			rc = -ENOMEM;
 			goto out;
 		}
+
+		/* Enable Input Output Port (transmitter reviever) */
+		rio_enable_rx_tx_port(mport, 1, 0, 0, 0);
+
 		if (rio_enum_peer(net, mport, 0) < 0) {
 			/* A higher priority host won enumeration, bail. */
 			printk(KERN_INFO
@@ -922,6 +1195,7 @@
 		}
 		rio_update_route_tables(mport);
 		rio_clear_locks(mport);
+		rio_pw_enable(mport, 1);
 	} else {
 		printk(KERN_INFO "RIO: master port %d link inactive\n",
 		       mport->id);
@@ -945,15 +1219,22 @@
 	u8 sport;
 
 	list_for_each_entry(rdev, &rio_devices, global_list)
-	    if (rio_is_switch(rdev))
-		for (i = 0;
-		     i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
-		     i++) {
-			if (rio_route_get_entry
-			    (rdev->net->hport, rdev->rswitch, RIO_GLOBAL_TABLE,
-			     i, &sport) < 0)
-				continue;
-			rdev->rswitch->route_table[i] = sport;
+		if (rio_is_switch(rdev)) {
+			rio_lock_device(rdev->net->hport, rdev->rswitch->destid,
+					rdev->rswitch->hopcount, 1000);
+			for (i = 0;
+			     i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
+			     i++) {
+				if (rio_route_get_entry
+				    (rdev->net->hport, rdev->rswitch,
+				     RIO_GLOBAL_TABLE, i, &sport, 0) < 0)
+					continue;
+				rdev->rswitch->route_table[i] = sport;
+			}
+
+			rio_unlock_device(rdev->net->hport,
+					  rdev->rswitch->destid,
+					  rdev->rswitch->hopcount);
 		}
 }
 
@@ -1012,6 +1293,13 @@
 		del_timer_sync(&rio_enum_timer);
 
 		pr_debug("done\n");
+
+		/* Read DestID assigned by enumerator */
+		rio_local_read_config_32(mport, RIO_DID_CSR,
+					 &mport->host_deviceid);
+		mport->host_deviceid = RIO_GET_DID(mport->sys_size,
+						   mport->host_deviceid);
+
 		if (rio_disc_peer(net, mport, RIO_ANY_DESTID(mport->sys_size),
 					0) < 0) {
 			printk(KERN_INFO
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
index 6395c78..08fa453 100644
--- a/drivers/rapidio/rio.c
+++ b/drivers/rapidio/rio.c
@@ -5,6 +5,10 @@
  * Copyright 2005 MontaVista Software, Inc.
  * Matt Porter <mporter@kernel.crashing.org>
  *
+ * Copyright 2009 Integrated Device Technology, Inc.
+ * Alex Bounine <alexandre.bounine@idt.com>
+ * - Added Port-Write/Error Management initialization and handling
+ *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
@@ -333,6 +337,331 @@
 }
 
 /**
+ * rio_request_inb_pwrite - request inbound port-write message service
+ * @rdev: RIO device to which register inbound port-write callback routine
+ * @pwcback: Callback routine to execute when port-write is received
+ *
+ * Binds a port-write callback function to the RapidIO device.
+ * Returns 0 if the request has been satisfied.
+ */
+int rio_request_inb_pwrite(struct rio_dev *rdev,
+	int (*pwcback)(struct rio_dev *rdev, union rio_pw_msg *msg, int step))
+{
+	int rc = 0;
+
+	spin_lock(&rio_global_list_lock);
+	if (rdev->pwcback != NULL)
+		rc = -ENOMEM;
+	else
+		rdev->pwcback = pwcback;
+
+	spin_unlock(&rio_global_list_lock);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(rio_request_inb_pwrite);
+
+/**
+ * rio_release_inb_pwrite - release inbound port-write message service
+ * @rdev: RIO device which registered for inbound port-write callback
+ *
+ * Removes callback from the rio_dev structure. Returns 0 if the request
+ * has been satisfied.
+ */
+int rio_release_inb_pwrite(struct rio_dev *rdev)
+{
+	int rc = -ENOMEM;
+
+	spin_lock(&rio_global_list_lock);
+	if (rdev->pwcback) {
+		rdev->pwcback = NULL;
+		rc = 0;
+	}
+
+	spin_unlock(&rio_global_list_lock);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(rio_release_inb_pwrite);
+
+/**
+ * rio_mport_get_physefb - Helper function that returns register offset
+ *                      for Physical Layer Extended Features Block.
+ * @port: Master port to issue transaction
+ * @local: Indicate a local master port or remote device access
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ */
+u32
+rio_mport_get_physefb(struct rio_mport *port, int local,
+		      u16 destid, u8 hopcount)
+{
+	u32 ext_ftr_ptr;
+	u32 ftr_header;
+
+	ext_ftr_ptr = rio_mport_get_efb(port, local, destid, hopcount, 0);
+
+	while (ext_ftr_ptr)  {
+		if (local)
+			rio_local_read_config_32(port, ext_ftr_ptr,
+						 &ftr_header);
+		else
+			rio_mport_read_config_32(port, destid, hopcount,
+						 ext_ftr_ptr, &ftr_header);
+
+		ftr_header = RIO_GET_BLOCK_ID(ftr_header);
+		switch (ftr_header) {
+
+		case RIO_EFB_SER_EP_ID_V13P:
+		case RIO_EFB_SER_EP_REC_ID_V13P:
+		case RIO_EFB_SER_EP_FREE_ID_V13P:
+		case RIO_EFB_SER_EP_ID:
+		case RIO_EFB_SER_EP_REC_ID:
+		case RIO_EFB_SER_EP_FREE_ID:
+		case RIO_EFB_SER_EP_FREC_ID:
+
+			return ext_ftr_ptr;
+
+		default:
+			break;
+		}
+
+		ext_ftr_ptr = rio_mport_get_efb(port, local, destid,
+						hopcount, ext_ftr_ptr);
+	}
+
+	return ext_ftr_ptr;
+}
+
+/**
+ * rio_get_comptag - Begin or continue searching for a RIO device by component tag
+ * @comp_tag: RIO component tag to match
+ * @from: Previous RIO device found in search, or %NULL for new search
+ *
+ * Iterates through the list of known RIO devices. If a RIO device is
+ * found with a matching @comp_tag, a pointer to its device
+ * structure is returned. Otherwise, %NULL is returned. A new search
+ * is initiated by passing %NULL to the @from argument. Otherwise, if
+ * @from is not %NULL, searches continue from next device on the global
+ * list.
+ */
+static struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from)
+{
+	struct list_head *n;
+	struct rio_dev *rdev;
+
+	spin_lock(&rio_global_list_lock);
+	n = from ? from->global_list.next : rio_devices.next;
+
+	while (n && (n != &rio_devices)) {
+		rdev = rio_dev_g(n);
+		if (rdev->comp_tag == comp_tag)
+			goto exit;
+		n = n->next;
+	}
+	rdev = NULL;
+exit:
+	spin_unlock(&rio_global_list_lock);
+	return rdev;
+}
+
+/**
+ * rio_set_port_lockout - Sets/clears LOCKOUT bit (RIO EM 1.3) for a switch port.
+ * @rdev: Pointer to RIO device control structure
+ * @pnum: Switch port number to set LOCKOUT bit
+ * @lock: Operation : set (=1) or clear (=0)
+ */
+int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock)
+{
+	u8 hopcount = 0xff;
+	u16 destid = rdev->destid;
+	u32 regval;
+
+	if (rdev->rswitch) {
+		destid = rdev->rswitch->destid;
+		hopcount = rdev->rswitch->hopcount;
+	}
+
+	rio_mport_read_config_32(rdev->net->hport, destid, hopcount,
+				 rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
+				 &regval);
+	if (lock)
+		regval |= RIO_PORT_N_CTL_LOCKOUT;
+	else
+		regval &= ~RIO_PORT_N_CTL_LOCKOUT;
+
+	rio_mport_write_config_32(rdev->net->hport, destid, hopcount,
+				  rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
+				  regval);
+	return 0;
+}
+
+/**
+ * rio_inb_pwrite_handler - process inbound port-write message
+ * @pw_msg: pointer to inbound port-write message
+ *
+ * Processes an inbound port-write message. Returns 0 if the request
+ * has been satisfied.
+ */
+int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
+{
+	struct rio_dev *rdev;
+	struct rio_mport *mport;
+	u8 hopcount;
+	u16 destid;
+	u32 err_status;
+	int rc, portnum;
+
+	rdev = rio_get_comptag(pw_msg->em.comptag, NULL);
+	if (rdev == NULL) {
+		/* Someting bad here (probably enumeration error) */
+		pr_err("RIO: %s No matching device for CTag 0x%08x\n",
+			__func__, pw_msg->em.comptag);
+		return -EIO;
+	}
+
+	pr_debug("RIO: Port-Write message from %s\n", rio_name(rdev));
+
+#ifdef DEBUG_PW
+	{
+	u32 i;
+	for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) {
+			pr_debug("0x%02x: %08x %08x %08x %08x",
+				 i*4, pw_msg->raw[i], pw_msg->raw[i + 1],
+				 pw_msg->raw[i + 2], pw_msg->raw[i + 3]);
+			i += 4;
+	}
+	pr_debug("\n");
+	}
+#endif
+
+	/* Call an external service function (if such is registered
+	 * for this device). This may be the service for endpoints that send
+	 * device-specific port-write messages. End-point messages expected
+	 * to be handled completely by EP specific device driver.
+	 * For switches rc==0 signals that no standard processing required.
+	 */
+	if (rdev->pwcback != NULL) {
+		rc = rdev->pwcback(rdev, pw_msg, 0);
+		if (rc == 0)
+			return 0;
+	}
+
+	/* For End-point devices processing stops here */
+	if (!(rdev->pef & RIO_PEF_SWITCH))
+		return 0;
+
+	if (rdev->phys_efptr == 0) {
+		pr_err("RIO_PW: Bad switch initialization for %s\n",
+			rio_name(rdev));
+		return 0;
+	}
+
+	mport = rdev->net->hport;
+	destid = rdev->rswitch->destid;
+	hopcount = rdev->rswitch->hopcount;
+
+	/*
+	 * Process the port-write notification from switch
+	 */
+
+	portnum = pw_msg->em.is_port & 0xFF;
+
+	if (rdev->rswitch->em_handle)
+		rdev->rswitch->em_handle(rdev, portnum);
+
+	rio_mport_read_config_32(mport, destid, hopcount,
+			rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+			&err_status);
+	pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status);
+
+	if (pw_msg->em.errdetect) {
+		pr_debug("RIO_PW: RIO_EM_P%d_ERR_DETECT=0x%08x\n",
+			 portnum, pw_msg->em.errdetect);
+		/* Clear EM Port N Error Detect CSR */
+		rio_mport_write_config_32(mport, destid, hopcount,
+			rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0);
+	}
+
+	if (pw_msg->em.ltlerrdet) {
+		pr_debug("RIO_PW: RIO_EM_LTL_ERR_DETECT=0x%08x\n",
+			 pw_msg->em.ltlerrdet);
+		/* Clear EM L/T Layer Error Detect CSR */
+		rio_mport_write_config_32(mport, destid, hopcount,
+			rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0);
+	}
+
+	/* Clear Port Errors */
+	rio_mport_write_config_32(mport, destid, hopcount,
+			rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+			err_status & RIO_PORT_N_ERR_STS_CLR_MASK);
+
+	if (rdev->rswitch->port_ok & (1 << portnum)) {
+		if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) {
+			rdev->rswitch->port_ok &= ~(1 << portnum);
+			rio_set_port_lockout(rdev, portnum, 1);
+
+			rio_mport_write_config_32(mport, destid, hopcount,
+				rdev->phys_efptr +
+					RIO_PORT_N_ACK_STS_CSR(portnum),
+				RIO_PORT_N_ACK_CLEAR);
+
+			/* Schedule Extraction Service */
+			pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n",
+			       rio_name(rdev), portnum);
+		}
+	} else {
+		if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) {
+			rdev->rswitch->port_ok |= (1 << portnum);
+			rio_set_port_lockout(rdev, portnum, 0);
+
+			/* Schedule Insertion Service */
+			pr_debug("RIO_PW: Device Insertion on [%s]-P%d\n",
+			       rio_name(rdev), portnum);
+		}
+	}
+
+	/* Clear Port-Write Pending bit */
+	rio_mport_write_config_32(mport, destid, hopcount,
+			rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+			RIO_PORT_N_ERR_STS_PW_PEND);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler);
+
+/**
+ * rio_mport_get_efb - get pointer to next extended features block
+ * @port: Master port to issue transaction
+ * @local: Indicate a local master port or remote device access
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @from: Offset of  current Extended Feature block header (if 0 starts
+ * from	ExtFeaturePtr)
+ */
+u32
+rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
+		      u8 hopcount, u32 from)
+{
+	u32 reg_val;
+
+	if (from == 0) {
+		if (local)
+			rio_local_read_config_32(port, RIO_ASM_INFO_CAR,
+						 &reg_val);
+		else
+			rio_mport_read_config_32(port, destid, hopcount,
+						 RIO_ASM_INFO_CAR, &reg_val);
+		return reg_val & RIO_EXT_FTR_PTR_MASK;
+	} else {
+		if (local)
+			rio_local_read_config_32(port, from, &reg_val);
+		else
+			rio_mport_read_config_32(port, destid, hopcount,
+						 from, &reg_val);
+		return RIO_GET_BLOCK_ID(reg_val);
+	}
+}
+
+/**
  * rio_mport_get_feature - query for devices' extended features
  * @port: Master port to issue transaction
  * @local: Indicate a local master port or remote device access
@@ -451,6 +780,110 @@
 	return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from);
 }
 
+/**
+ * rio_std_route_add_entry - Add switch route table entry using standard
+ *   registers defined in RIO specification rev.1.3
+ * @mport: Master port to issue transaction
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @table: routing table ID (global or port-specific)
+ * @route_destid: destID entry in the RT
+ * @route_port: destination port for specified destID
+ */
+int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 route_port)
+{
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_DESTID_SEL_CSR,
+				(u32)route_destid);
+		rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_PORT_SEL_CSR,
+				(u32)route_port);
+	}
+
+	udelay(10);
+	return 0;
+}
+
+/**
+ * rio_std_route_get_entry - Read switch route table entry (port number)
+ *   assosiated with specified destID using standard registers defined in RIO
+ *   specification rev.1.3
+ * @mport: Master port to issue transaction
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @table: routing table ID (global or port-specific)
+ * @route_destid: destID entry in the RT
+ * @route_port: returned destination port for specified destID
+ */
+int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 *route_port)
+{
+	u32 result;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
+		rio_mport_read_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+		*route_port = (u8)result;
+	}
+
+	return 0;
+}
+
+/**
+ * rio_std_route_clr_table - Clear swotch route table using standard registers
+ *   defined in RIO specification rev.1.3.
+ * @mport: Master port to issue transaction
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @table: routing table ID (global or port-specific)
+ */
+int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table)
+{
+	u32 max_destid = 0xff;
+	u32 i, pef, id_inc = 1, ext_cfg = 0;
+	u32 port_sel = RIO_INVALID_ROUTE;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_read_config_32(mport, destid, hopcount,
+					 RIO_PEF_CAR, &pef);
+
+		if (mport->sys_size) {
+			rio_mport_read_config_32(mport, destid, hopcount,
+						 RIO_SWITCH_RT_LIMIT,
+						 &max_destid);
+			max_destid &= RIO_RT_MAX_DESTID;
+		}
+
+		if (pef & RIO_PEF_EXT_RT) {
+			ext_cfg = 0x80000000;
+			id_inc = 4;
+			port_sel = (RIO_INVALID_ROUTE << 24) |
+				   (RIO_INVALID_ROUTE << 16) |
+				   (RIO_INVALID_ROUTE << 8) |
+				   RIO_INVALID_ROUTE;
+		}
+
+		for (i = 0; i <= max_destid;) {
+			rio_mport_write_config_32(mport, destid, hopcount,
+					RIO_STD_RTE_CONF_DESTID_SEL_CSR,
+					ext_cfg | i);
+			rio_mport_write_config_32(mport, destid, hopcount,
+					RIO_STD_RTE_CONF_PORT_SEL_CSR,
+					port_sel);
+			i += id_inc;
+		}
+	}
+
+	udelay(10);
+	return 0;
+}
+
 static void rio_fixup_device(struct rio_dev *dev)
 {
 }
diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h
index 7786d02..f27b7a9 100644
--- a/drivers/rapidio/rio.h
+++ b/drivers/rapidio/rio.h
@@ -18,38 +18,50 @@
 
 extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
 				 u8 hopcount, int ftr);
+extern u32 rio_mport_get_physefb(struct rio_mport *port, int local,
+				 u16 destid, u8 hopcount);
+extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
+			     u8 hopcount, u32 from);
 extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
 extern int rio_enum_mport(struct rio_mport *mport);
 extern int rio_disc_mport(struct rio_mport *mport);
+extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid,
+				   u8 hopcount, u16 table, u16 route_destid,
+				   u8 route_port);
+extern int rio_std_route_get_entry(struct rio_mport *mport, u16 destid,
+				   u8 hopcount, u16 table, u16 route_destid,
+				   u8 *route_port);
+extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid,
+				   u8 hopcount, u16 table);
+extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock);
 
 /* Structures internal to the RIO core code */
 extern struct device_attribute rio_dev_attrs[];
 extern spinlock_t rio_global_list_lock;
 
-extern struct rio_route_ops __start_rio_route_ops[];
-extern struct rio_route_ops __end_rio_route_ops[];
+extern struct rio_switch_ops __start_rio_switch_ops[];
+extern struct rio_switch_ops __end_rio_switch_ops[];
 
 /* Helpers internal to the RIO core code */
-#define DECLARE_RIO_ROUTE_SECTION(section, vid, did, add_hook, get_hook)  \
-	static struct rio_route_ops __rio_route_ops __used   \
-	__section(section)= { vid, did, add_hook, get_hook };
+#define DECLARE_RIO_SWITCH_SECTION(section, name, vid, did, init_hook) \
+	static const struct rio_switch_ops __rio_switch_##name __used \
+	__section(section) = { vid, did, init_hook };
 
 /**
- * DECLARE_RIO_ROUTE_OPS - Registers switch routing operations
+ * DECLARE_RIO_SWITCH_INIT - Registers switch initialization routine
  * @vid: RIO vendor ID
  * @did: RIO device ID
- * @add_hook: Callback that adds a route entry
- * @get_hook: Callback that gets a route entry
+ * @init_hook: Callback that performs switch-specific initialization
  *
- * Manipulating switch route tables in RIO is switch specific. This
- * registers a switch by vendor and device ID with two callbacks for
- * modifying and retrieving route entries in a switch. A &struct
- * rio_route_ops is initialized with the ops and placed into a
- * RIO-specific kernel section.
+ * Manipulating switch route tables and error management in RIO
+ * is switch specific. This registers a switch by vendor and device ID with
+ * initialization callback for setting up switch operations and (if required)
+ * hardware initialization. A &struct rio_switch_ops is initialized with
+ * pointer to the init routine and placed into a RIO-specific kernel section.
  */
-#define DECLARE_RIO_ROUTE_OPS(vid, did, add_hook, get_hook)		\
-	DECLARE_RIO_ROUTE_SECTION(.rio_route_ops,			\
-			vid, did, add_hook, get_hook)
+#define DECLARE_RIO_SWITCH_INIT(vid, did, init_hook)		\
+	DECLARE_RIO_SWITCH_SECTION(.rio_switch_ops, vid##did, \
+			vid, did, init_hook)
 
 #define RIO_GET_DID(size, x)	(size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
 #define RIO_SET_DID(size, x)	(size ? (x & 0xffff) : ((x & 0x000000ff) << 16))
diff --git a/drivers/rapidio/switches/Kconfig b/drivers/rapidio/switches/Kconfig
new file mode 100644
index 0000000..2b4e9b2
--- /dev/null
+++ b/drivers/rapidio/switches/Kconfig
@@ -0,0 +1,28 @@
+#
+# RapidIO switches configuration
+#
+config RAPIDIO_TSI57X
+	bool "IDT Tsi57x SRIO switches support"
+	depends on RAPIDIO
+	---help---
+	  Includes support for IDT Tsi57x family of serial RapidIO switches.
+
+config RAPIDIO_CPS_XX
+	bool "IDT CPS-xx SRIO switches support"
+	depends on RAPIDIO
+	---help---
+	  Includes support for IDT CPS-16/12/10/8 serial RapidIO switches.
+
+config RAPIDIO_TSI568
+	bool "Tsi568 SRIO switch support"
+	depends on RAPIDIO
+	default n
+	---help---
+	  Includes support for IDT Tsi568 serial RapidIO switch.
+
+config RAPIDIO_TSI500
+	bool "Tsi500 Parallel RapidIO switch support"
+	depends on RAPIDIO
+	default n
+	---help---
+	  Includes support for IDT Tsi500 parallel RapidIO switch.
diff --git a/drivers/rapidio/switches/Makefile b/drivers/rapidio/switches/Makefile
index b924f83..fe4adc3 100644
--- a/drivers/rapidio/switches/Makefile
+++ b/drivers/rapidio/switches/Makefile
@@ -2,4 +2,11 @@
 # Makefile for RIO switches
 #
 
-obj-$(CONFIG_RAPIDIO)	+= tsi500.o
+obj-$(CONFIG_RAPIDIO_TSI57X)	+= tsi57x.o
+obj-$(CONFIG_RAPIDIO_CPS_XX)	+= idtcps.o
+obj-$(CONFIG_RAPIDIO_TSI568)	+= tsi568.o
+obj-$(CONFIG_RAPIDIO_TSI500)	+= tsi500.o
+
+ifeq ($(CONFIG_RAPIDIO_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
diff --git a/drivers/rapidio/switches/idtcps.c b/drivers/rapidio/switches/idtcps.c
new file mode 100644
index 0000000..2c790c1
--- /dev/null
+++ b/drivers/rapidio/switches/idtcps.c
@@ -0,0 +1,137 @@
+/*
+ * IDT CPS RapidIO switches support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include "../rio.h"
+
+#define CPS_DEFAULT_ROUTE	0xde
+#define CPS_NO_ROUTE		0xdf
+
+#define IDTCPS_RIO_DOMAIN 0xf20020
+
+static int
+idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 route_port)
+{
+	u32 result;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
+
+		rio_mport_read_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+		result = (0xffffff00 & result) | (u32)route_port;
+		rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_PORT_SEL_CSR, result);
+	}
+
+	return 0;
+}
+
+static int
+idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 *route_port)
+{
+	u32 result;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
+
+		rio_mport_read_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+		if (CPS_DEFAULT_ROUTE == (u8)result ||
+		    CPS_NO_ROUTE == (u8)result)
+			*route_port = RIO_INVALID_ROUTE;
+		else
+			*route_port = (u8)result;
+	}
+
+	return 0;
+}
+
+static int
+idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table)
+{
+	u32 i;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		for (i = 0x80000000; i <= 0x800000ff;) {
+			rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_DESTID_SEL_CSR, i);
+			rio_mport_write_config_32(mport, destid, hopcount,
+				RIO_STD_RTE_CONF_PORT_SEL_CSR,
+				(CPS_DEFAULT_ROUTE << 24) |
+				(CPS_DEFAULT_ROUTE << 16) |
+				(CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE);
+			i += 4;
+		}
+	}
+
+	return 0;
+}
+
+static int
+idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u8 sw_domain)
+{
+	/*
+	 * Switch domain configuration operates only at global level
+	 */
+	rio_mport_write_config_32(mport, destid, hopcount,
+				  IDTCPS_RIO_DOMAIN, (u32)sw_domain);
+	return 0;
+}
+
+static int
+idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u8 *sw_domain)
+{
+	u32 regval;
+
+	/*
+	 * Switch domain configuration operates only at global level
+	 */
+	rio_mport_read_config_32(mport, destid, hopcount,
+				IDTCPS_RIO_DOMAIN, &regval);
+
+	*sw_domain = (u8)(regval & 0xff);
+
+	return 0;
+}
+
+static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
+{
+	pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+	rdev->rswitch->add_entry = idtcps_route_add_entry;
+	rdev->rswitch->get_entry = idtcps_route_get_entry;
+	rdev->rswitch->clr_table = idtcps_route_clr_table;
+	rdev->rswitch->set_domain = idtcps_set_domain;
+	rdev->rswitch->get_domain = idtcps_get_domain;
+	rdev->rswitch->em_init = NULL;
+	rdev->rswitch->em_handle = NULL;
+
+	return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init);
diff --git a/drivers/rapidio/switches/tsi500.c b/drivers/rapidio/switches/tsi500.c
index c77c23b..914eddd 100644
--- a/drivers/rapidio/switches/tsi500.c
+++ b/drivers/rapidio/switches/tsi500.c
@@ -1,6 +1,10 @@
 /*
  * RapidIO Tsi500 switch support
  *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ *  - Modified switch operations initialization.
+ *
  * Copyright 2005 MontaVista Software, Inc.
  * Matt Porter <mporter@kernel.crashing.org>
  *
@@ -57,4 +61,18 @@
 	return ret;
 }
 
-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_route_add_entry, tsi500_route_get_entry);
+static int tsi500_switch_init(struct rio_dev *rdev, int do_enum)
+{
+	pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+	rdev->rswitch->add_entry = tsi500_route_add_entry;
+	rdev->rswitch->get_entry = tsi500_route_get_entry;
+	rdev->rswitch->clr_table = NULL;
+	rdev->rswitch->set_domain = NULL;
+	rdev->rswitch->get_domain = NULL;
+	rdev->rswitch->em_init = NULL;
+	rdev->rswitch->em_handle = NULL;
+
+	return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_switch_init);
diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
new file mode 100644
index 0000000..f7fd789
--- /dev/null
+++ b/drivers/rapidio/switches/tsi568.c
@@ -0,0 +1,146 @@
+/*
+ * RapidIO Tsi568 switch support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ *  - Added EM support
+ *  - Modified switch operations initialization.
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/delay.h>
+#include "../rio.h"
+
+/* Global (broadcast) route registers */
+#define SPBC_ROUTE_CFG_DESTID	0x10070
+#define SPBC_ROUTE_CFG_PORT	0x10074
+
+/* Per port route registers */
+#define SPP_ROUTE_CFG_DESTID(n)	(0x11070 + 0x100*n)
+#define SPP_ROUTE_CFG_PORT(n)	(0x11074 + 0x100*n)
+
+#define TSI568_SP_MODE_BC	0x10004
+#define  TSI568_SP_MODE_PW_DIS	0x08000000
+
+static int
+tsi568_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 route_port)
+{
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPBC_ROUTE_CFG_DESTID, route_destid);
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPBC_ROUTE_CFG_PORT, route_port);
+	} else {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPP_ROUTE_CFG_DESTID(table),
+					route_destid);
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPP_ROUTE_CFG_PORT(table), route_port);
+	}
+
+	udelay(10);
+
+	return 0;
+}
+
+static int
+tsi568_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 *route_port)
+{
+	int ret = 0;
+	u32 result;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPBC_ROUTE_CFG_DESTID, route_destid);
+		rio_mport_read_config_32(mport, destid, hopcount,
+					SPBC_ROUTE_CFG_PORT, &result);
+	} else {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPP_ROUTE_CFG_DESTID(table),
+					route_destid);
+		rio_mport_read_config_32(mport, destid, hopcount,
+					SPP_ROUTE_CFG_PORT(table), &result);
+	}
+
+	*route_port = result;
+	if (*route_port > 15)
+		ret = -1;
+
+	return ret;
+}
+
+static int
+tsi568_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table)
+{
+	u32 route_idx;
+	u32 lut_size;
+
+	lut_size = (mport->sys_size) ? 0x1ff : 0xff;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPBC_ROUTE_CFG_DESTID, 0x80000000);
+		for (route_idx = 0; route_idx <= lut_size; route_idx++)
+			rio_mport_write_config_32(mport, destid, hopcount,
+						SPBC_ROUTE_CFG_PORT,
+						RIO_INVALID_ROUTE);
+	} else {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					SPP_ROUTE_CFG_DESTID(table),
+					0x80000000);
+		for (route_idx = 0; route_idx <= lut_size; route_idx++)
+			rio_mport_write_config_32(mport, destid, hopcount,
+						SPP_ROUTE_CFG_PORT(table),
+						RIO_INVALID_ROUTE);
+	}
+
+	return 0;
+}
+
+static int
+tsi568_em_init(struct rio_dev *rdev)
+{
+	struct rio_mport *mport = rdev->net->hport;
+	u16 destid = rdev->rswitch->destid;
+	u8 hopcount = rdev->rswitch->hopcount;
+	u32 regval;
+
+	pr_debug("TSI568 %s [%d:%d]\n", __func__, destid, hopcount);
+
+	/* Make sure that Port-Writes are disabled (for all ports) */
+	rio_mport_read_config_32(mport, destid, hopcount,
+			TSI568_SP_MODE_BC, &regval);
+	rio_mport_write_config_32(mport, destid, hopcount,
+			TSI568_SP_MODE_BC, regval | TSI568_SP_MODE_PW_DIS);
+
+	return 0;
+}
+
+static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
+{
+	pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+	rdev->rswitch->add_entry = tsi568_route_add_entry;
+	rdev->rswitch->get_entry = tsi568_route_get_entry;
+	rdev->rswitch->clr_table = tsi568_route_clr_table;
+	rdev->rswitch->set_domain = NULL;
+	rdev->rswitch->get_domain = NULL;
+	rdev->rswitch->em_init = tsi568_em_init;
+	rdev->rswitch->em_handle = NULL;
+
+	return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_switch_init);
diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c
new file mode 100644
index 0000000..d34df72
--- /dev/null
+++ b/drivers/rapidio/switches/tsi57x.c
@@ -0,0 +1,315 @@
+/*
+ * RapidIO Tsi57x switch family support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ *  - Added EM support
+ *  - Modified switch operations initialization.
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/delay.h>
+#include "../rio.h"
+
+/* Global (broadcast) route registers */
+#define SPBC_ROUTE_CFG_DESTID	0x10070
+#define SPBC_ROUTE_CFG_PORT	0x10074
+
+/* Per port route registers */
+#define SPP_ROUTE_CFG_DESTID(n)	(0x11070 + 0x100*n)
+#define SPP_ROUTE_CFG_PORT(n)	(0x11074 + 0x100*n)
+
+#define TSI578_SP_MODE(n)	(0x11004 + n*0x100)
+#define TSI578_SP_MODE_GLBL	0x10004
+#define  TSI578_SP_MODE_PW_DIS	0x08000000
+#define  TSI578_SP_MODE_LUT_512	0x01000000
+
+#define TSI578_SP_CTL_INDEP(n)	(0x13004 + n*0x100)
+#define TSI578_SP_LUT_PEINF(n)	(0x13010 + n*0x100)
+#define TSI578_SP_CS_TX(n)	(0x13014 + n*0x100)
+#define TSI578_SP_INT_STATUS(n) (0x13018 + n*0x100)
+
+#define TSI578_GLBL_ROUTE_BASE	0x10078
+
+static int
+tsi57x_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 route_port)
+{
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					  SPBC_ROUTE_CFG_DESTID, route_destid);
+		rio_mport_write_config_32(mport, destid, hopcount,
+					  SPBC_ROUTE_CFG_PORT, route_port);
+	} else {
+		rio_mport_write_config_32(mport, destid, hopcount,
+				SPP_ROUTE_CFG_DESTID(table), route_destid);
+		rio_mport_write_config_32(mport, destid, hopcount,
+				SPP_ROUTE_CFG_PORT(table), route_port);
+	}
+
+	udelay(10);
+
+	return 0;
+}
+
+static int
+tsi57x_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table, u16 route_destid, u8 *route_port)
+{
+	int ret = 0;
+	u32 result;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		/* Use local RT of the ingress port to avoid possible
+		   race condition */
+		rio_mport_read_config_32(mport, destid, hopcount,
+			RIO_SWP_INFO_CAR, &result);
+		table = (result & RIO_SWP_INFO_PORT_NUM_MASK);
+	}
+
+	rio_mport_write_config_32(mport, destid, hopcount,
+				SPP_ROUTE_CFG_DESTID(table), route_destid);
+	rio_mport_read_config_32(mport, destid, hopcount,
+				SPP_ROUTE_CFG_PORT(table), &result);
+
+	*route_port = (u8)result;
+	if (*route_port > 15)
+		ret = -1;
+
+	return ret;
+}
+
+static int
+tsi57x_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u16 table)
+{
+	u32 route_idx;
+	u32 lut_size;
+
+	lut_size = (mport->sys_size) ? 0x1ff : 0xff;
+
+	if (table == RIO_GLOBAL_TABLE) {
+		rio_mport_write_config_32(mport, destid, hopcount,
+					  SPBC_ROUTE_CFG_DESTID, 0x80000000);
+		for (route_idx = 0; route_idx <= lut_size; route_idx++)
+			rio_mport_write_config_32(mport, destid, hopcount,
+						  SPBC_ROUTE_CFG_PORT,
+						  RIO_INVALID_ROUTE);
+	} else {
+		rio_mport_write_config_32(mport, destid, hopcount,
+				SPP_ROUTE_CFG_DESTID(table), 0x80000000);
+		for (route_idx = 0; route_idx <= lut_size; route_idx++)
+			rio_mport_write_config_32(mport, destid, hopcount,
+				SPP_ROUTE_CFG_PORT(table) , RIO_INVALID_ROUTE);
+	}
+
+	return 0;
+}
+
+static int
+tsi57x_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u8 sw_domain)
+{
+	u32 regval;
+
+	/*
+	 * Switch domain configuration operates only at global level
+	 */
+
+	/* Turn off flat (LUT_512) mode */
+	rio_mport_read_config_32(mport, destid, hopcount,
+				 TSI578_SP_MODE_GLBL, &regval);
+	rio_mport_write_config_32(mport, destid, hopcount, TSI578_SP_MODE_GLBL,
+				  regval & ~TSI578_SP_MODE_LUT_512);
+	/* Set switch domain base */
+	rio_mport_write_config_32(mport, destid, hopcount,
+				  TSI578_GLBL_ROUTE_BASE,
+				  (u32)(sw_domain << 24));
+	return 0;
+}
+
+static int
+tsi57x_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+		       u8 *sw_domain)
+{
+	u32 regval;
+
+	/*
+	 * Switch domain configuration operates only at global level
+	 */
+	rio_mport_read_config_32(mport, destid, hopcount,
+				TSI578_GLBL_ROUTE_BASE, &regval);
+
+	*sw_domain = (u8)(regval >> 24);
+
+	return 0;
+}
+
+static int
+tsi57x_em_init(struct rio_dev *rdev)
+{
+	struct rio_mport *mport = rdev->net->hport;
+	u16 destid = rdev->rswitch->destid;
+	u8 hopcount = rdev->rswitch->hopcount;
+	u32 regval;
+	int portnum;
+
+	pr_debug("TSI578 %s [%d:%d]\n", __func__, destid, hopcount);
+
+	for (portnum = 0; portnum < 16; portnum++) {
+		/* Make sure that Port-Writes are enabled (for all ports) */
+		rio_mport_read_config_32(mport, destid, hopcount,
+				TSI578_SP_MODE(portnum), &regval);
+		rio_mport_write_config_32(mport, destid, hopcount,
+				TSI578_SP_MODE(portnum),
+				regval & ~TSI578_SP_MODE_PW_DIS);
+
+		/* Clear all pending interrupts */
+		rio_mport_read_config_32(mport, destid, hopcount,
+				rdev->phys_efptr +
+					RIO_PORT_N_ERR_STS_CSR(portnum),
+				&regval);
+		rio_mport_write_config_32(mport, destid, hopcount,
+				rdev->phys_efptr +
+					RIO_PORT_N_ERR_STS_CSR(portnum),
+				regval & 0x07120214);
+
+		rio_mport_read_config_32(mport, destid, hopcount,
+				TSI578_SP_INT_STATUS(portnum), &regval);
+		rio_mport_write_config_32(mport, destid, hopcount,
+				TSI578_SP_INT_STATUS(portnum),
+				regval & 0x000700bd);
+
+		/* Enable all interrupts to allow ports to send a port-write */
+		rio_mport_read_config_32(mport, destid, hopcount,
+				TSI578_SP_CTL_INDEP(portnum), &regval);
+		rio_mport_write_config_32(mport, destid, hopcount,
+				TSI578_SP_CTL_INDEP(portnum),
+				regval | 0x000b0000);
+
+		/* Skip next (odd) port if the current port is in x4 mode */
+		rio_mport_read_config_32(mport, destid, hopcount,
+				rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+				&regval);
+		if ((regval & RIO_PORT_N_CTL_PWIDTH) == RIO_PORT_N_CTL_PWIDTH_4)
+			portnum++;
+	}
+
+	return 0;
+}
+
+static int
+tsi57x_em_handler(struct rio_dev *rdev, u8 portnum)
+{
+	struct rio_mport *mport = rdev->net->hport;
+	u16 destid = rdev->rswitch->destid;
+	u8 hopcount = rdev->rswitch->hopcount;
+	u32 intstat, err_status;
+	int sendcount, checkcount;
+	u8 route_port;
+	u32 regval;
+
+	rio_mport_read_config_32(mport, destid, hopcount,
+			rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+			&err_status);
+
+	if ((err_status & RIO_PORT_N_ERR_STS_PORT_OK) &&
+	    (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
+			  RIO_PORT_N_ERR_STS_PW_INP_ES))) {
+		/* Remove any queued packets by locking/unlocking port */
+		rio_mport_read_config_32(mport, destid, hopcount,
+			rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+			&regval);
+		if (!(regval & RIO_PORT_N_CTL_LOCKOUT)) {
+			rio_mport_write_config_32(mport, destid, hopcount,
+				rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+				regval | RIO_PORT_N_CTL_LOCKOUT);
+			udelay(50);
+			rio_mport_write_config_32(mport, destid, hopcount,
+				rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+				regval);
+		}
+
+		/* Read from link maintenance response register to clear
+		 * valid bit
+		 */
+		rio_mport_read_config_32(mport, destid, hopcount,
+			rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(portnum),
+			&regval);
+
+		/* Send a Packet-Not-Accepted/Link-Request-Input-Status control
+		 * symbol to recover from IES/OES
+		 */
+		sendcount = 3;
+		while (sendcount) {
+			rio_mport_write_config_32(mport, destid, hopcount,
+					  TSI578_SP_CS_TX(portnum), 0x40fc8000);
+			checkcount = 3;
+			while (checkcount--) {
+				udelay(50);
+				rio_mport_read_config_32(
+					mport, destid, hopcount,
+					rdev->phys_efptr +
+						RIO_PORT_N_MNT_RSP_CSR(portnum),
+					&regval);
+				if (regval & RIO_PORT_N_MNT_RSP_RVAL)
+					goto exit_es;
+			}
+
+			sendcount--;
+		}
+	}
+
+exit_es:
+	/* Clear implementation specific error status bits */
+	rio_mport_read_config_32(mport, destid, hopcount,
+				 TSI578_SP_INT_STATUS(portnum), &intstat);
+	pr_debug("TSI578[%x:%x] SP%d_INT_STATUS=0x%08x\n",
+		 destid, hopcount, portnum, intstat);
+
+	if (intstat & 0x10000) {
+		rio_mport_read_config_32(mport, destid, hopcount,
+				TSI578_SP_LUT_PEINF(portnum), &regval);
+		regval = (mport->sys_size) ? (regval >> 16) : (regval >> 24);
+		route_port = rdev->rswitch->route_table[regval];
+		pr_debug("RIO: TSI578[%s] P%d LUT Parity Error (destID=%d)\n",
+			rio_name(rdev), portnum, regval);
+		tsi57x_route_add_entry(mport, destid, hopcount,
+				RIO_GLOBAL_TABLE, regval, route_port);
+	}
+
+	rio_mport_write_config_32(mport, destid, hopcount,
+				  TSI578_SP_INT_STATUS(portnum),
+				  intstat & 0x000700bd);
+
+	return 0;
+}
+
+static int tsi57x_switch_init(struct rio_dev *rdev, int do_enum)
+{
+	pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+	rdev->rswitch->add_entry = tsi57x_route_add_entry;
+	rdev->rswitch->get_entry = tsi57x_route_get_entry;
+	rdev->rswitch->clr_table = tsi57x_route_clr_table;
+	rdev->rswitch->set_domain = tsi57x_set_domain;
+	rdev->rswitch->get_domain = tsi57x_get_domain;
+	rdev->rswitch->em_init = tsi57x_em_init;
+	rdev->rswitch->em_handle = tsi57x_em_handler;
+
+	return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI572, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI574, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI577, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI578, tsi57x_switch_init);
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index f159832..10ba12c 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -611,6 +611,13 @@
 	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
 	  support. This chip contains a battery- and capacitor-backed RTC.
 
+config RTC_DRV_AB8500
+	tristate "ST-Ericsson AB8500 RTC"
+	depends on AB8500_CORE
+	help
+	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
+	  support. This chip contains a battery- and capacitor-backed RTC.
+
 config RTC_DRV_NUC900
 	tristate "NUC910/NUC920 RTC driver"
 	depends on RTC_CLASS && ARCH_W90X900
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 245311a..5adbba7 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -18,6 +18,7 @@
 # Keep the list ordered.
 
 obj-$(CONFIG_RTC_DRV_AB3100)	+= rtc-ab3100.o
+obj-$(CONFIG_RTC_DRV_AB8500)	+= rtc-ab8500.o
 obj-$(CONFIG_RTC_DRV_AT32AP700X)+= rtc-at32ap700x.o
 obj-$(CONFIG_RTC_DRV_AT91RM9200)+= rtc-at91rm9200.o
 obj-$(CONFIG_RTC_DRV_AT91SAM9)	+= rtc-at91sam9.o
diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c
new file mode 100644
index 0000000..2fda031
--- /dev/null
+++ b/drivers/rtc/rtc-ab8500.c
@@ -0,0 +1,363 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ * Author: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
+ *
+ * RTC clock driver for the RTC part of the AB8500 Power management chip.
+ * Based on RTC clock driver for the AB3100 Analog Baseband Chip by
+ * Linus Walleij <linus.walleij@stericsson.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/mfd/ab8500.h>
+#include <linux/delay.h>
+
+#define AB8500_RTC_SOFF_STAT_REG	0x0F00
+#define AB8500_RTC_CC_CONF_REG		0x0F01
+#define AB8500_RTC_READ_REQ_REG		0x0F02
+#define AB8500_RTC_WATCH_TSECMID_REG	0x0F03
+#define AB8500_RTC_WATCH_TSECHI_REG	0x0F04
+#define AB8500_RTC_WATCH_TMIN_LOW_REG	0x0F05
+#define AB8500_RTC_WATCH_TMIN_MID_REG	0x0F06
+#define AB8500_RTC_WATCH_TMIN_HI_REG	0x0F07
+#define AB8500_RTC_ALRM_MIN_LOW_REG	0x0F08
+#define AB8500_RTC_ALRM_MIN_MID_REG	0x0F09
+#define AB8500_RTC_ALRM_MIN_HI_REG	0x0F0A
+#define AB8500_RTC_STAT_REG		0x0F0B
+#define AB8500_RTC_BKUP_CHG_REG		0x0F0C
+#define AB8500_RTC_FORCE_BKUP_REG	0x0F0D
+#define AB8500_RTC_CALIB_REG		0x0F0E
+#define AB8500_RTC_SWITCH_STAT_REG	0x0F0F
+#define AB8500_REV_REG			0x1080
+
+/* RtcReadRequest bits */
+#define RTC_READ_REQUEST		0x01
+#define RTC_WRITE_REQUEST		0x02
+
+/* RtcCtrl bits */
+#define RTC_ALARM_ENA			0x04
+#define RTC_STATUS_DATA			0x01
+
+#define COUNTS_PER_SEC			(0xF000 / 60)
+#define AB8500_RTC_EPOCH		2000
+
+static const unsigned long ab8500_rtc_time_regs[] = {
+	AB8500_RTC_WATCH_TMIN_HI_REG, AB8500_RTC_WATCH_TMIN_MID_REG,
+	AB8500_RTC_WATCH_TMIN_LOW_REG, AB8500_RTC_WATCH_TSECHI_REG,
+	AB8500_RTC_WATCH_TSECMID_REG
+};
+
+static const unsigned long ab8500_rtc_alarm_regs[] = {
+	AB8500_RTC_ALRM_MIN_HI_REG, AB8500_RTC_ALRM_MIN_MID_REG,
+	AB8500_RTC_ALRM_MIN_LOW_REG
+};
+
+/* Calculate the seconds from 1970 to 01-01-2000 00:00:00 */
+static unsigned long get_elapsed_seconds(int year)
+{
+	unsigned long secs;
+	struct rtc_time tm = {
+		.tm_year = year - 1900,
+		.tm_mday = 1,
+	};
+
+	/*
+	 * This function calculates secs from 1970 and not from
+	 * 1900, even if we supply the offset from year 1900.
+	 */
+	rtc_tm_to_time(&tm, &secs);
+	return secs;
+}
+
+static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+	unsigned long timeout = jiffies + HZ;
+	int retval, i;
+	unsigned long mins, secs;
+	unsigned char buf[ARRAY_SIZE(ab8500_rtc_time_regs)];
+
+	/* Request a data read */
+	retval = ab8500_write(ab8500, AB8500_RTC_READ_REQ_REG,
+			      RTC_READ_REQUEST);
+	if (retval < 0)
+		return retval;
+
+	/* Early AB8500 chips will not clear the rtc read request bit */
+	if (ab8500->revision == 0) {
+		msleep(1);
+	} else {
+		/* Wait for some cycles after enabling the rtc read in ab8500 */
+		while (time_before(jiffies, timeout)) {
+			retval = ab8500_read(ab8500, AB8500_RTC_READ_REQ_REG);
+			if (retval < 0)
+				return retval;
+
+			if (!(retval & RTC_READ_REQUEST))
+				break;
+
+			msleep(1);
+		}
+	}
+
+	/* Read the Watchtime registers */
+	for (i = 0; i < ARRAY_SIZE(ab8500_rtc_time_regs); i++) {
+		retval = ab8500_read(ab8500, ab8500_rtc_time_regs[i]);
+		if (retval < 0)
+			return retval;
+		buf[i] = retval;
+	}
+
+	mins = (buf[0] << 16) | (buf[1] << 8) | buf[2];
+
+	secs =	(buf[3] << 8) | buf[4];
+	secs =	secs / COUNTS_PER_SEC;
+	secs =	secs + (mins * 60);
+
+	/* Add back the initially subtracted number of seconds */
+	secs += get_elapsed_seconds(AB8500_RTC_EPOCH);
+
+	rtc_time_to_tm(secs, tm);
+	return rtc_valid_tm(tm);
+}
+
+static int ab8500_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+	int retval, i;
+	unsigned char buf[ARRAY_SIZE(ab8500_rtc_time_regs)];
+	unsigned long no_secs, no_mins, secs = 0;
+
+	if (tm->tm_year < (AB8500_RTC_EPOCH - 1900)) {
+		dev_dbg(dev, "year should be equal to or greater than %d\n",
+				AB8500_RTC_EPOCH);
+		return -EINVAL;
+	}
+
+	/* Get the number of seconds since 1970 */
+	rtc_tm_to_time(tm, &secs);
+
+	/*
+	 * Convert it to the number of seconds since 01-01-2000 00:00:00, since
+	 * we only have a small counter in the RTC.
+	 */
+	secs -= get_elapsed_seconds(AB8500_RTC_EPOCH);
+
+	no_mins = secs / 60;
+
+	no_secs = secs % 60;
+	/* Make the seconds count as per the RTC resolution */
+	no_secs = no_secs * COUNTS_PER_SEC;
+
+	buf[4] = no_secs & 0xFF;
+	buf[3] = (no_secs >> 8) & 0xFF;
+
+	buf[2] = no_mins & 0xFF;
+	buf[1] = (no_mins >> 8) & 0xFF;
+	buf[0] = (no_mins >> 16) & 0xFF;
+
+	for (i = 0; i < ARRAY_SIZE(ab8500_rtc_time_regs); i++) {
+		retval = ab8500_write(ab8500, ab8500_rtc_time_regs[i], buf[i]);
+		if (retval < 0)
+			return retval;
+	}
+
+	/* Request a data write */
+	return ab8500_write(ab8500, AB8500_RTC_READ_REQ_REG, RTC_WRITE_REQUEST);
+}
+
+static int ab8500_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+	int retval, i;
+	int rtc_ctrl;
+	unsigned char buf[ARRAY_SIZE(ab8500_rtc_alarm_regs)];
+	unsigned long secs, mins;
+
+	/* Check if the alarm is enabled or not */
+	rtc_ctrl = ab8500_read(ab8500, AB8500_RTC_STAT_REG);
+	if (rtc_ctrl < 0)
+		return rtc_ctrl;
+
+	if (rtc_ctrl & RTC_ALARM_ENA)
+		alarm->enabled = 1;
+	else
+		alarm->enabled = 0;
+
+	alarm->pending = 0;
+
+	for (i = 0; i < ARRAY_SIZE(ab8500_rtc_alarm_regs); i++) {
+		retval = ab8500_read(ab8500, ab8500_rtc_alarm_regs[i]);
+		if (retval < 0)
+			return retval;
+		buf[i] = retval;
+	}
+
+	mins = (buf[0] << 16) | (buf[1] << 8) | (buf[2]);
+	secs = mins * 60;
+
+	/* Add back the initially subtracted number of seconds */
+	secs += get_elapsed_seconds(AB8500_RTC_EPOCH);
+
+	rtc_time_to_tm(secs, &alarm->time);
+
+	return rtc_valid_tm(&alarm->time);
+}
+
+static int ab8500_rtc_irq_enable(struct device *dev, unsigned int enabled)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+
+	return ab8500_set_bits(ab8500, AB8500_RTC_STAT_REG, RTC_ALARM_ENA,
+			       enabled ? RTC_ALARM_ENA : 0);
+}
+
+static int ab8500_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+	int retval, i;
+	unsigned char buf[ARRAY_SIZE(ab8500_rtc_alarm_regs)];
+	unsigned long mins, secs = 0;
+
+	if (alarm->time.tm_year < (AB8500_RTC_EPOCH - 1900)) {
+		dev_dbg(dev, "year should be equal to or greater than %d\n",
+				AB8500_RTC_EPOCH);
+		return -EINVAL;
+	}
+
+	/* Get the number of seconds since 1970 */
+	rtc_tm_to_time(&alarm->time, &secs);
+
+	/*
+	 * Convert it to the number of seconds since 01-01-2000 00:00:00, since
+	 * we only have a small counter in the RTC.
+	 */
+	secs -= get_elapsed_seconds(AB8500_RTC_EPOCH);
+
+	mins = secs / 60;
+
+	buf[2] = mins & 0xFF;
+	buf[1] = (mins >> 8) & 0xFF;
+	buf[0] = (mins >> 16) & 0xFF;
+
+	/* Set the alarm time */
+	for (i = 0; i < ARRAY_SIZE(ab8500_rtc_alarm_regs); i++) {
+		retval = ab8500_write(ab8500, ab8500_rtc_alarm_regs[i], buf[i]);
+		if (retval < 0)
+			return retval;
+	}
+
+	return ab8500_rtc_irq_enable(dev, alarm->enabled);
+}
+
+static irqreturn_t rtc_alarm_handler(int irq, void *data)
+{
+	struct rtc_device *rtc = data;
+	unsigned long events = RTC_IRQF | RTC_AF;
+
+	dev_dbg(&rtc->dev, "%s\n", __func__);
+	rtc_update_irq(rtc, 1, events);
+
+	return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops ab8500_rtc_ops = {
+	.read_time		= ab8500_rtc_read_time,
+	.set_time		= ab8500_rtc_set_time,
+	.read_alarm		= ab8500_rtc_read_alarm,
+	.set_alarm		= ab8500_rtc_set_alarm,
+	.alarm_irq_enable	= ab8500_rtc_irq_enable,
+};
+
+static int __devinit ab8500_rtc_probe(struct platform_device *pdev)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
+	int err;
+	struct rtc_device *rtc;
+	int rtc_ctrl;
+	int irq;
+
+	irq = platform_get_irq_byname(pdev, "ALARM");
+	if (irq < 0)
+		return irq;
+
+	/* For RTC supply test */
+	err = ab8500_set_bits(ab8500, AB8500_RTC_STAT_REG, RTC_STATUS_DATA,
+			RTC_STATUS_DATA);
+	if (err < 0)
+		return err;
+
+	/* Wait for reset by the PorRtc */
+	msleep(1);
+
+	rtc_ctrl = ab8500_read(ab8500, AB8500_RTC_STAT_REG);
+	if (rtc_ctrl < 0)
+		return rtc_ctrl;
+
+	/* Check if the RTC Supply fails */
+	if (!(rtc_ctrl & RTC_STATUS_DATA)) {
+		dev_err(&pdev->dev, "RTC supply failure\n");
+		return -ENODEV;
+	}
+
+	rtc = rtc_device_register("ab8500-rtc", &pdev->dev, &ab8500_rtc_ops,
+			THIS_MODULE);
+	if (IS_ERR(rtc)) {
+		dev_err(&pdev->dev, "Registration failed\n");
+		err = PTR_ERR(rtc);
+		return err;
+	}
+
+	err = request_threaded_irq(irq, NULL, rtc_alarm_handler, 0,
+				   "ab8500-rtc", rtc);
+	if (err < 0) {
+		rtc_device_unregister(rtc);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, rtc);
+
+	return 0;
+}
+
+static int __devexit ab8500_rtc_remove(struct platform_device *pdev)
+{
+	struct rtc_device *rtc = platform_get_drvdata(pdev);
+	int irq = platform_get_irq_byname(pdev, "ALARM");
+
+	free_irq(irq, rtc);
+	rtc_device_unregister(rtc);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static struct platform_driver ab8500_rtc_driver = {
+	.driver = {
+		.name = "ab8500-rtc",
+		.owner = THIS_MODULE,
+	},
+	.probe	= ab8500_rtc_probe,
+	.remove = __devexit_p(ab8500_rtc_remove),
+};
+
+static int __init ab8500_rtc_init(void)
+{
+	return platform_driver_register(&ab8500_rtc_driver);
+}
+
+static void __exit ab8500_rtc_exit(void)
+{
+	platform_driver_unregister(&ab8500_rtc_driver);
+}
+
+module_init(ab8500_rtc_init);
+module_exit(ab8500_rtc_exit);
+MODULE_AUTHOR("Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>");
+MODULE_DESCRIPTION("AB8500 RTC Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 038095d..6dc4e62 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -595,10 +595,6 @@
 static ssize_t wdt_write(struct file *file, const char __user *buf,
 			 size_t count, loff_t *ppos)
 {
-	/*  Can't seek (pwrite) on this device
-	if (ppos != &file->f_pos)
-	return -ESPIPE;
-	*/
 	if (count) {
 		wdt_ping();
 		return 1;
@@ -707,7 +703,7 @@
 		 */
 		wdt_is_open = 1;
 		unlock_kernel();
-		return 0;
+		return nonseekable_open(inode, file);
 	}
 	return -ENODEV;
 }
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 0e86247..33975e9 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1186,6 +1186,29 @@
 	dasd_schedule_device_bh(device);
 }
 
+enum uc_todo dasd_generic_uc_handler(struct ccw_device *cdev, struct irb *irb)
+{
+	struct dasd_device *device;
+
+	device = dasd_device_from_cdev_locked(cdev);
+
+	if (IS_ERR(device))
+		goto out;
+	if (test_bit(DASD_FLAG_OFFLINE, &device->flags) ||
+	   device->state != device->target ||
+	   !device->discipline->handle_unsolicited_interrupt){
+		dasd_put_device(device);
+		goto out;
+	}
+
+	dasd_device_clear_timer(device);
+	device->discipline->handle_unsolicited_interrupt(device, irb);
+	dasd_put_device(device);
+out:
+	return UC_TODO_RETRY;
+}
+EXPORT_SYMBOL_GPL(dasd_generic_uc_handler);
+
 /*
  * If we have an error on a dasd_block layer request then we cancel
  * and return all further requests from the same dasd_block as well.
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 5b1cd8d..ab84da5 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -3436,6 +3436,7 @@
 	.freeze      = dasd_generic_pm_freeze,
 	.thaw	     = dasd_generic_restore_device,
 	.restore     = dasd_generic_restore_device,
+	.uc_handler  = dasd_generic_uc_handler,
 };
 
 /*
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 32fac18..49b431d 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -617,6 +617,7 @@
 void dasd_generic_handle_state_change(struct dasd_device *);
 int dasd_generic_pm_freeze(struct ccw_device *);
 int dasd_generic_restore_device(struct ccw_device *);
+enum uc_todo dasd_generic_uc_handler(struct ccw_device *, struct irb *);
 
 int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int);
 char *dasd_get_sense(struct irb *);
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 5f97ea2..97b25d6 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -123,8 +123,10 @@
 
 	for (i = 0; i < gdev->count; i++) {
 		if (gdev->cdev[i]) {
+			spin_lock_irq(gdev->cdev[i]->ccwlock);
 			if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
 				dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
+			spin_unlock_irq(gdev->cdev[i]->ccwlock);
 			put_device(&gdev->cdev[i]->dev);
 		}
 	}
@@ -262,11 +264,14 @@
 			goto error;
 		}
 		/* Don't allow a device to belong to more than one group. */
+		spin_lock_irq(gdev->cdev[i]->ccwlock);
 		if (dev_get_drvdata(&gdev->cdev[i]->dev)) {
+			spin_unlock_irq(gdev->cdev[i]->ccwlock);
 			rc = -EINVAL;
 			goto error;
 		}
 		dev_set_drvdata(&gdev->cdev[i]->dev, gdev);
+		spin_unlock_irq(gdev->cdev[i]->ccwlock);
 	}
 	/* Check for sufficient number of bus ids. */
 	if (i < num_devices && !curr_buf) {
@@ -303,8 +308,10 @@
 error:
 	for (i = 0; i < num_devices; i++)
 		if (gdev->cdev[i]) {
+			spin_lock_irq(gdev->cdev[i]->ccwlock);
 			if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
 				dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
+			spin_unlock_irq(gdev->cdev[i]->ccwlock);
 			put_device(&gdev->cdev[i]->dev);
 			gdev->cdev[i] = NULL;
 		}
diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c
index 37df42a..7f206ed 100644
--- a/drivers/s390/cio/ccwreq.c
+++ b/drivers/s390/cio/ccwreq.c
@@ -159,6 +159,7 @@
 {
 	struct irb *irb = &cdev->private->irb;
 	struct cmd_scsw *scsw = &irb->scsw.cmd;
+	enum uc_todo todo;
 
 	/* Perform BASIC SENSE if needed. */
 	if (ccw_device_accumulate_and_sense(cdev, lcirb))
@@ -178,6 +179,20 @@
 		/* Check for command reject. */
 		if (irb->ecw[0] & SNS0_CMD_REJECT)
 			return IO_REJECTED;
+		/* Ask the driver what to do */
+		if (cdev->drv && cdev->drv->uc_handler) {
+			todo = cdev->drv->uc_handler(cdev, lcirb);
+			switch (todo) {
+			case UC_TODO_RETRY:
+				return IO_STATUS_ERROR;
+			case UC_TODO_RETRY_ON_NEW_PATH:
+				return IO_PATH_ERROR;
+			case UC_TODO_STOP:
+				return IO_REJECTED;
+			default:
+				return IO_STATUS_ERROR;
+			}
+		}
 		/* Assume that unexpected SENSE data implies an error. */
 		return IO_STATUS_ERROR;
 	}
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h
index 7592627..fac0615 100644
--- a/drivers/s390/cio/ioasm.h
+++ b/drivers/s390/cio/ioasm.h
@@ -23,21 +23,6 @@
  * Some S390 specific IO instructions as inline
  */
 
-static inline int stsch(struct subchannel_id schid, struct schib *addr)
-{
-	register struct subchannel_id reg1 asm ("1") = schid;
-	int ccode;
-
-	asm volatile(
-		"	stsch	0(%3)\n"
-		"	ipm	%0\n"
-		"	srl	%0,28"
-		: "=d" (ccode), "=m" (*addr)
-		: "d" (reg1), "a" (addr)
-		: "cc");
-	return ccode;
-}
-
 static inline int stsch_err(struct subchannel_id schid, struct schib *addr)
 {
 	register struct subchannel_id reg1 asm ("1") = schid;
diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c
index 308541f..1bb5d3f 100644
--- a/drivers/scsi/a2091.c
+++ b/drivers/scsi/a2091.c
@@ -1,34 +1,31 @@
 #include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/zorro.h>
 
-#include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <linux/spinlock.h>
 
 #include "scsi.h"
-#include <scsi/scsi_host.h>
 #include "wd33c93.h"
 #include "a2091.h"
 
-#include <linux/stat.h>
 
-
-static int a2091_release(struct Scsi_Host *instance);
+struct a2091_hostdata {
+	struct WD33C93_hostdata wh;
+	struct a2091_scsiregs *regs;
+};
 
 static irqreturn_t a2091_intr(int irq, void *data)
 {
 	struct Scsi_Host *instance = data;
-	a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
-	unsigned int status = regs->ISTR;
+	struct a2091_hostdata *hdata = shost_priv(instance);
+	unsigned int status = hdata->regs->ISTR;
 	unsigned long flags;
 
 	if (!(status & (ISTR_INT_F | ISTR_INT_P)) || !(status & ISTR_INTS))
@@ -43,38 +40,39 @@
 static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 {
 	struct Scsi_Host *instance = cmd->device->host;
-	struct WD33C93_hostdata *hdata = shost_priv(instance);
-	a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
+	struct a2091_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct a2091_scsiregs *regs = hdata->regs;
 	unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
 	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
 
 	/* don't allow DMA if the physical address is bad */
 	if (addr & A2091_XFER_MASK) {
-		hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
-		hdata->dma_bounce_buffer = kmalloc(hdata->dma_bounce_len,
-						   GFP_KERNEL);
+		wh->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
+		wh->dma_bounce_buffer = kmalloc(wh->dma_bounce_len,
+						GFP_KERNEL);
 
 		/* can't allocate memory; use PIO */
-		if (!hdata->dma_bounce_buffer) {
-			hdata->dma_bounce_len = 0;
+		if (!wh->dma_bounce_buffer) {
+			wh->dma_bounce_len = 0;
 			return 1;
 		}
 
 		/* get the physical address of the bounce buffer */
-		addr = virt_to_bus(hdata->dma_bounce_buffer);
+		addr = virt_to_bus(wh->dma_bounce_buffer);
 
 		/* the bounce buffer may not be in the first 16M of physmem */
 		if (addr & A2091_XFER_MASK) {
 			/* we could use chipmem... maybe later */
-			kfree(hdata->dma_bounce_buffer);
-			hdata->dma_bounce_buffer = NULL;
-			hdata->dma_bounce_len = 0;
+			kfree(wh->dma_bounce_buffer);
+			wh->dma_bounce_buffer = NULL;
+			wh->dma_bounce_len = 0;
 			return 1;
 		}
 
 		if (!dir_in) {
 			/* copy to bounce buffer for a write */
-			memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr,
+			memcpy(wh->dma_bounce_buffer, cmd->SCp.ptr,
 			       cmd->SCp.this_residual);
 		}
 	}
@@ -84,7 +82,7 @@
 		cntr |= CNTR_DDIR;
 
 	/* remember direction */
-	hdata->dma_dir = dir_in;
+	wh->dma_dir = dir_in;
 
 	regs->CNTR = cntr;
 
@@ -108,20 +106,21 @@
 static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 		     int status)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(instance);
-	a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
+	struct a2091_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct a2091_scsiregs *regs = hdata->regs;
 
 	/* disable SCSI interrupts */
 	unsigned short cntr = CNTR_PDMD;
 
-	if (!hdata->dma_dir)
+	if (!wh->dma_dir)
 		cntr |= CNTR_DDIR;
 
 	/* disable SCSI interrupts */
 	regs->CNTR = cntr;
 
 	/* flush if we were reading */
-	if (hdata->dma_dir) {
+	if (wh->dma_dir) {
 		regs->FLUSH = 1;
 		while (!(regs->ISTR & ISTR_FE_FLG))
 			;
@@ -137,95 +136,37 @@
 	regs->CNTR = CNTR_PDMD | CNTR_INTEN;
 
 	/* copy from a bounce buffer, if necessary */
-	if (status && hdata->dma_bounce_buffer) {
-		if (hdata->dma_dir)
-			memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer,
+	if (status && wh->dma_bounce_buffer) {
+		if (wh->dma_dir)
+			memcpy(SCpnt->SCp.ptr, wh->dma_bounce_buffer,
 			       SCpnt->SCp.this_residual);
-		kfree(hdata->dma_bounce_buffer);
-		hdata->dma_bounce_buffer = NULL;
-		hdata->dma_bounce_len = 0;
+		kfree(wh->dma_bounce_buffer);
+		wh->dma_bounce_buffer = NULL;
+		wh->dma_bounce_len = 0;
 	}
 }
 
-static int __init a2091_detect(struct scsi_host_template *tpnt)
-{
-	static unsigned char called = 0;
-	struct Scsi_Host *instance;
-	unsigned long address;
-	struct zorro_dev *z = NULL;
-	wd33c93_regs wdregs;
-	a2091_scsiregs *regs;
-	struct WD33C93_hostdata *hdata;
-	int num_a2091 = 0;
-
-	if (!MACH_IS_AMIGA || called)
-		return 0;
-	called = 1;
-
-	tpnt->proc_name = "A2091";
-	tpnt->proc_info = &wd33c93_proc_info;
-
-	while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
-		if (z->id != ZORRO_PROD_CBM_A590_A2091_1 &&
-		    z->id != ZORRO_PROD_CBM_A590_A2091_2)
-			continue;
-		address = z->resource.start;
-		if (!request_mem_region(address, 256, "wd33c93"))
-			continue;
-
-		instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
-		if (instance == NULL)
-			goto release;
-		instance->base = ZTWO_VADDR(address);
-		instance->irq = IRQ_AMIGA_PORTS;
-		instance->unique_id = z->slotaddr;
-		regs = (a2091_scsiregs *)(instance->base);
-		regs->DAWR = DAWR_A2091;
-		wdregs.SASR = &regs->SASR;
-		wdregs.SCMD = &regs->SCMD;
-		hdata = shost_priv(instance);
-		hdata->no_sync = 0xff;
-		hdata->fast = 0;
-		hdata->dma_mode = CTRL_DMA;
-		wd33c93_init(instance, wdregs, dma_setup, dma_stop,
-			     WD33C93_FS_8_10);
-		if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED,
-				"A2091 SCSI", instance))
-			goto unregister;
-		regs->CNTR = CNTR_PDMD | CNTR_INTEN;
-		num_a2091++;
-		continue;
-
-unregister:
-		scsi_unregister(instance);
-release:
-		release_mem_region(address, 256);
-	}
-
-	return num_a2091;
-}
-
 static int a2091_bus_reset(struct scsi_cmnd *cmd)
 {
+	struct Scsi_Host *instance = cmd->device->host;
+
 	/* FIXME perform bus-specific reset */
 
 	/* FIXME 2: kill this function, and let midlayer fall back
 	   to the same action, calling wd33c93_host_reset() */
 
-	spin_lock_irq(cmd->device->host->host_lock);
+	spin_lock_irq(instance->host_lock);
 	wd33c93_host_reset(cmd);
-	spin_unlock_irq(cmd->device->host->host_lock);
+	spin_unlock_irq(instance->host_lock);
 
 	return SUCCESS;
 }
 
-#define HOSTS_C
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "A2901",
+static struct scsi_host_template a2091_scsi_template = {
+	.module			= THIS_MODULE,
 	.name			= "Commodore A2091/A590 SCSI",
-	.detect			= a2091_detect,
-	.release		= a2091_release,
+	.proc_info		= wd33c93_proc_info,
+	.proc_name		= "A2901",
 	.queuecommand		= wd33c93_queuecommand,
 	.eh_abort_handler	= wd33c93_abort,
 	.eh_bus_reset_handler	= a2091_bus_reset,
@@ -237,19 +178,103 @@
 	.use_clustering		= DISABLE_CLUSTERING
 };
 
-
-#include "scsi_module.c"
-
-static int a2091_release(struct Scsi_Host *instance)
+static int __devinit a2091_probe(struct zorro_dev *z,
+				 const struct zorro_device_id *ent)
 {
-#ifdef MODULE
-	a2091_scsiregs *regs = (a2091_scsiregs *)(instance->base);
+	struct Scsi_Host *instance;
+	int error;
+	struct a2091_scsiregs *regs;
+	wd33c93_regs wdregs;
+	struct a2091_hostdata *hdata;
 
-	regs->CNTR = 0;
-	release_mem_region(ZTWO_PADDR(instance->base), 256);
+	if (!request_mem_region(z->resource.start, 256, "wd33c93"))
+		return -EBUSY;
+
+	instance = scsi_host_alloc(&a2091_scsi_template,
+				   sizeof(struct a2091_hostdata));
+	if (!instance) {
+		error = -ENOMEM;
+		goto fail_alloc;
+	}
+
+	instance->irq = IRQ_AMIGA_PORTS;
+	instance->unique_id = z->slotaddr;
+
+	regs = (struct a2091_scsiregs *)ZTWO_VADDR(z->resource.start);
+	regs->DAWR = DAWR_A2091;
+
+	wdregs.SASR = &regs->SASR;
+	wdregs.SCMD = &regs->SCMD;
+
+	hdata = shost_priv(instance);
+	hdata->wh.no_sync = 0xff;
+	hdata->wh.fast = 0;
+	hdata->wh.dma_mode = CTRL_DMA;
+	hdata->regs = regs;
+
+	wd33c93_init(instance, wdregs, dma_setup, dma_stop, WD33C93_FS_8_10);
+	error = request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED,
+			    "A2091 SCSI", instance);
+	if (error)
+		goto fail_irq;
+
+	regs->CNTR = CNTR_PDMD | CNTR_INTEN;
+
+	error = scsi_add_host(instance, NULL);
+	if (error)
+		goto fail_host;
+
+	zorro_set_drvdata(z, instance);
+
+	scsi_scan_host(instance);
+	return 0;
+
+fail_host:
 	free_irq(IRQ_AMIGA_PORTS, instance);
-#endif
-	return 1;
+fail_irq:
+	scsi_host_put(instance);
+fail_alloc:
+	release_mem_region(z->resource.start, 256);
+	return error;
 }
 
+static void __devexit a2091_remove(struct zorro_dev *z)
+{
+	struct Scsi_Host *instance = zorro_get_drvdata(z);
+	struct a2091_hostdata *hdata = shost_priv(instance);
+
+	hdata->regs->CNTR = 0;
+	scsi_remove_host(instance);
+	free_irq(IRQ_AMIGA_PORTS, instance);
+	scsi_host_put(instance);
+	release_mem_region(z->resource.start, 256);
+}
+
+static struct zorro_device_id a2091_zorro_tbl[] __devinitdata = {
+	{ ZORRO_PROD_CBM_A590_A2091_1 },
+	{ ZORRO_PROD_CBM_A590_A2091_2 },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(zorro, a2091_zorro_tbl);
+
+static struct zorro_driver a2091_driver = {
+	.name		= "a2091",
+	.id_table	= a2091_zorro_tbl,
+	.probe		= a2091_probe,
+	.remove		= __devexit_p(a2091_remove),
+};
+
+static int __init a2091_init(void)
+{
+	return zorro_register_driver(&a2091_driver);
+}
+module_init(a2091_init);
+
+static void __exit a2091_exit(void)
+{
+	zorro_unregister_driver(&a2091_driver);
+}
+module_exit(a2091_exit);
+
+MODULE_DESCRIPTION("Commodore A2091/A590 SCSI");
 MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/a2091.h b/drivers/scsi/a2091.h
index 1c3daa1..794b8e6 100644
--- a/drivers/scsi/a2091.h
+++ b/drivers/scsi/a2091.h
@@ -25,7 +25,7 @@
  */
 #define A2091_XFER_MASK		(0xff000001)
 
-typedef struct {
+struct a2091_scsiregs {
 		 unsigned char	pad1[64];
 	volatile unsigned short	ISTR;
 	volatile unsigned short	CNTR;
@@ -44,7 +44,7 @@
 	volatile unsigned short	CINT;
 		 unsigned char	pad7[2];
 	volatile unsigned short	FLUSH;
-} a2091_scsiregs;
+};
 
 #define DAWR_A2091		(3)
 
diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c
index bc6eb69..d946802 100644
--- a/drivers/scsi/a3000.c
+++ b/drivers/scsi/a3000.c
@@ -1,53 +1,52 @@
 #include <linux/types.h>
 #include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
 
-#include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
-#include <asm/irq.h>
 
 #include "scsi.h"
-#include <scsi/scsi_host.h>
 #include "wd33c93.h"
 #include "a3000.h"
 
-#include <linux/stat.h>
 
+struct a3000_hostdata {
+	struct WD33C93_hostdata wh;
+	struct a3000_scsiregs *regs;
+};
 
-#define DMA(ptr)	((a3000_scsiregs *)((ptr)->base))
-
-static struct Scsi_Host *a3000_host = NULL;
-
-static int a3000_release(struct Scsi_Host *instance);
-
-static irqreturn_t a3000_intr(int irq, void *dummy)
+static irqreturn_t a3000_intr(int irq, void *data)
 {
+	struct Scsi_Host *instance = data;
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	unsigned int status = hdata->regs->ISTR;
 	unsigned long flags;
-	unsigned int status = DMA(a3000_host)->ISTR;
 
 	if (!(status & ISTR_INT_P))
 		return IRQ_NONE;
 	if (status & ISTR_INTS) {
-		spin_lock_irqsave(a3000_host->host_lock, flags);
-		wd33c93_intr(a3000_host);
-		spin_unlock_irqrestore(a3000_host->host_lock, flags);
+		spin_lock_irqsave(instance->host_lock, flags);
+		wd33c93_intr(instance);
+		spin_unlock_irqrestore(instance->host_lock, flags);
 		return IRQ_HANDLED;
 	}
-	printk("Non-serviced A3000 SCSI-interrupt? ISTR = %02x\n", status);
+	pr_warning("Non-serviced A3000 SCSI-interrupt? ISTR = %02x\n", status);
 	return IRQ_NONE;
 }
 
 static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(a3000_host);
+	struct Scsi_Host *instance = cmd->device->host;
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct a3000_scsiregs *regs = hdata->regs;
 	unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
 	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
 
@@ -58,23 +57,23 @@
 	 * buffer
 	 */
 	if (addr & A3000_XFER_MASK) {
-		hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
-		hdata->dma_bounce_buffer = kmalloc(hdata->dma_bounce_len,
-						   GFP_KERNEL);
+		wh->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
+		wh->dma_bounce_buffer = kmalloc(wh->dma_bounce_len,
+						GFP_KERNEL);
 
 		/* can't allocate memory; use PIO */
-		if (!hdata->dma_bounce_buffer) {
-			hdata->dma_bounce_len = 0;
+		if (!wh->dma_bounce_buffer) {
+			wh->dma_bounce_len = 0;
 			return 1;
 		}
 
 		if (!dir_in) {
 			/* copy to bounce buffer for a write */
-			memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr,
+			memcpy(wh->dma_bounce_buffer, cmd->SCp.ptr,
 			       cmd->SCp.this_residual);
 		}
 
-		addr = virt_to_bus(hdata->dma_bounce_buffer);
+		addr = virt_to_bus(wh->dma_bounce_buffer);
 	}
 
 	/* setup dma direction */
@@ -82,12 +81,12 @@
 		cntr |= CNTR_DDIR;
 
 	/* remember direction */
-	hdata->dma_dir = dir_in;
+	wh->dma_dir = dir_in;
 
-	DMA(a3000_host)->CNTR = cntr;
+	regs->CNTR = cntr;
 
 	/* setup DMA *physical* address */
-	DMA(a3000_host)->ACR = addr;
+	regs->ACR = addr;
 
 	if (dir_in) {
 		/* invalidate any cache */
@@ -99,7 +98,7 @@
 
 	/* start DMA */
 	mb();			/* make sure setup is completed */
-	DMA(a3000_host)->ST_DMA = 1;
+	regs->ST_DMA = 1;
 	mb();			/* make sure DMA has started before next IO */
 
 	/* return success */
@@ -109,22 +108,24 @@
 static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 		     int status)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(instance);
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct a3000_scsiregs *regs = hdata->regs;
 
 	/* disable SCSI interrupts */
 	unsigned short cntr = CNTR_PDMD;
 
-	if (!hdata->dma_dir)
+	if (!wh->dma_dir)
 		cntr |= CNTR_DDIR;
 
-	DMA(instance)->CNTR = cntr;
+	regs->CNTR = cntr;
 	mb();			/* make sure CNTR is updated before next IO */
 
 	/* flush if we were reading */
-	if (hdata->dma_dir) {
-		DMA(instance)->FLUSH = 1;
+	if (wh->dma_dir) {
+		regs->FLUSH = 1;
 		mb();		/* don't allow prefetch */
-		while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
+		while (!(regs->ISTR & ISTR_FE_FLG))
 			barrier();
 		mb();		/* no IO until FLUSH is done */
 	}
@@ -133,96 +134,54 @@
 	/* I think that this CINT is only necessary if you are
 	 * using the terminal count features.   HM 7 Mar 1994
 	 */
-	DMA(instance)->CINT = 1;
+	regs->CINT = 1;
 
 	/* stop DMA */
-	DMA(instance)->SP_DMA = 1;
+	regs->SP_DMA = 1;
 	mb();			/* make sure DMA is stopped before next IO */
 
 	/* restore the CONTROL bits (minus the direction flag) */
-	DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
+	regs->CNTR = CNTR_PDMD | CNTR_INTEN;
 	mb();			/* make sure CNTR is updated before next IO */
 
 	/* copy from a bounce buffer, if necessary */
-	if (status && hdata->dma_bounce_buffer) {
+	if (status && wh->dma_bounce_buffer) {
 		if (SCpnt) {
-			if (hdata->dma_dir && SCpnt)
-				memcpy(SCpnt->SCp.ptr,
-				       hdata->dma_bounce_buffer,
+			if (wh->dma_dir && SCpnt)
+				memcpy(SCpnt->SCp.ptr, wh->dma_bounce_buffer,
 				       SCpnt->SCp.this_residual);
-			kfree(hdata->dma_bounce_buffer);
-			hdata->dma_bounce_buffer = NULL;
-			hdata->dma_bounce_len = 0;
+			kfree(wh->dma_bounce_buffer);
+			wh->dma_bounce_buffer = NULL;
+			wh->dma_bounce_len = 0;
 		} else {
-			kfree(hdata->dma_bounce_buffer);
-			hdata->dma_bounce_buffer = NULL;
-			hdata->dma_bounce_len = 0;
+			kfree(wh->dma_bounce_buffer);
+			wh->dma_bounce_buffer = NULL;
+			wh->dma_bounce_len = 0;
 		}
 	}
 }
 
-static int __init a3000_detect(struct scsi_host_template *tpnt)
-{
-	wd33c93_regs regs;
-	struct WD33C93_hostdata *hdata;
-
-	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(A3000_SCSI))
-		return 0;
-	if (!request_mem_region(0xDD0000, 256, "wd33c93"))
-		return 0;
-
-	tpnt->proc_name = "A3000";
-	tpnt->proc_info = &wd33c93_proc_info;
-
-	a3000_host = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
-	if (a3000_host == NULL)
-		goto fail_register;
-
-	a3000_host->base = ZTWO_VADDR(0xDD0000);
-	a3000_host->irq = IRQ_AMIGA_PORTS;
-	DMA(a3000_host)->DAWR = DAWR_A3000;
-	regs.SASR = &(DMA(a3000_host)->SASR);
-	regs.SCMD = &(DMA(a3000_host)->SCMD);
-	hdata = shost_priv(a3000_host);
-	hdata->no_sync = 0xff;
-	hdata->fast = 0;
-	hdata->dma_mode = CTRL_DMA;
-	wd33c93_init(a3000_host, regs, dma_setup, dma_stop, WD33C93_FS_12_15);
-	if (request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED, "A3000 SCSI",
-			a3000_intr))
-		goto fail_irq;
-	DMA(a3000_host)->CNTR = CNTR_PDMD | CNTR_INTEN;
-
-	return 1;
-
-fail_irq:
-	scsi_unregister(a3000_host);
-fail_register:
-	release_mem_region(0xDD0000, 256);
-	return 0;
-}
-
 static int a3000_bus_reset(struct scsi_cmnd *cmd)
 {
+	struct Scsi_Host *instance = cmd->device->host;
+
 	/* FIXME perform bus-specific reset */
 
 	/* FIXME 2: kill this entire function, which should
 	   cause mid-layer to call wd33c93_host_reset anyway? */
 
-	spin_lock_irq(cmd->device->host->host_lock);
+	spin_lock_irq(instance->host_lock);
 	wd33c93_host_reset(cmd);
-	spin_unlock_irq(cmd->device->host->host_lock);
+	spin_unlock_irq(instance->host_lock);
 
 	return SUCCESS;
 }
 
-#define HOSTS_C
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "A3000",
+static struct scsi_host_template amiga_a3000_scsi_template = {
+	.module			= THIS_MODULE,
 	.name			= "Amiga 3000 built-in SCSI",
-	.detect			= a3000_detect,
-	.release		= a3000_release,
+	.proc_info		= wd33c93_proc_info,
+	.proc_name		= "A3000",
 	.queuecommand		= wd33c93_queuecommand,
 	.eh_abort_handler	= wd33c93_abort,
 	.eh_bus_reset_handler	= a3000_bus_reset,
@@ -234,15 +193,104 @@
 	.use_clustering		= ENABLE_CLUSTERING
 };
 
-
-#include "scsi_module.c"
-
-static int a3000_release(struct Scsi_Host *instance)
+static int __init amiga_a3000_scsi_probe(struct platform_device *pdev)
 {
-	DMA(instance)->CNTR = 0;
-	release_mem_region(0xDD0000, 256);
-	free_irq(IRQ_AMIGA_PORTS, a3000_intr);
-	return 1;
+	struct resource *res;
+	struct Scsi_Host *instance;
+	int error;
+	struct a3000_scsiregs *regs;
+	wd33c93_regs wdregs;
+	struct a3000_hostdata *hdata;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
+
+	if (!request_mem_region(res->start, resource_size(res), "wd33c93"))
+		return -EBUSY;
+
+	instance = scsi_host_alloc(&amiga_a3000_scsi_template,
+				   sizeof(struct a3000_hostdata));
+	if (!instance) {
+		error = -ENOMEM;
+		goto fail_alloc;
+	}
+
+	instance->irq = IRQ_AMIGA_PORTS;
+
+	regs = (struct a3000_scsiregs *)ZTWO_VADDR(res->start);
+	regs->DAWR = DAWR_A3000;
+
+	wdregs.SASR = &regs->SASR;
+	wdregs.SCMD = &regs->SCMD;
+
+	hdata = shost_priv(instance);
+	hdata->wh.no_sync = 0xff;
+	hdata->wh.fast = 0;
+	hdata->wh.dma_mode = CTRL_DMA;
+	hdata->regs = regs;
+
+	wd33c93_init(instance, wdregs, dma_setup, dma_stop, WD33C93_FS_12_15);
+	error = request_irq(IRQ_AMIGA_PORTS, a3000_intr, IRQF_SHARED,
+			    "A3000 SCSI", instance);
+	if (error)
+		goto fail_irq;
+
+	regs->CNTR = CNTR_PDMD | CNTR_INTEN;
+
+	error = scsi_add_host(instance, NULL);
+	if (error)
+		goto fail_host;
+
+	platform_set_drvdata(pdev, instance);
+
+	scsi_scan_host(instance);
+	return 0;
+
+fail_host:
+	free_irq(IRQ_AMIGA_PORTS, instance);
+fail_irq:
+	scsi_host_put(instance);
+fail_alloc:
+	release_mem_region(res->start, resource_size(res));
+	return error;
 }
 
+static int __exit amiga_a3000_scsi_remove(struct platform_device *pdev)
+{
+	struct Scsi_Host *instance = platform_get_drvdata(pdev);
+	struct a3000_hostdata *hdata = shost_priv(instance);
+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	hdata->regs->CNTR = 0;
+	scsi_remove_host(instance);
+	free_irq(IRQ_AMIGA_PORTS, instance);
+	scsi_host_put(instance);
+	release_mem_region(res->start, resource_size(res));
+	return 0;
+}
+
+static struct platform_driver amiga_a3000_scsi_driver = {
+	.remove = __exit_p(amiga_a3000_scsi_remove),
+	.driver   = {
+		.name	= "amiga-a3000-scsi",
+		.owner	= THIS_MODULE,
+	},
+};
+
+static int __init amiga_a3000_scsi_init(void)
+{
+	return platform_driver_probe(&amiga_a3000_scsi_driver,
+				     amiga_a3000_scsi_probe);
+}
+module_init(amiga_a3000_scsi_init);
+
+static void __exit amiga_a3000_scsi_exit(void)
+{
+	platform_driver_unregister(&amiga_a3000_scsi_driver);
+}
+module_exit(amiga_a3000_scsi_exit);
+
+MODULE_DESCRIPTION("Amiga 3000 built-in SCSI");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-a3000-scsi");
diff --git a/drivers/scsi/a3000.h b/drivers/scsi/a3000.h
index 684813e..49db4a3 100644
--- a/drivers/scsi/a3000.h
+++ b/drivers/scsi/a3000.h
@@ -25,7 +25,7 @@
  */
 #define A3000_XFER_MASK		(0x00000003)
 
-typedef struct {
+struct a3000_scsiregs {
 		 unsigned char	pad1[2];
 	volatile unsigned short	DAWR;
 	volatile unsigned int	WTC;
@@ -46,7 +46,7 @@
 	volatile unsigned char	SASR;
 		 unsigned char	pad9;
 	volatile unsigned char	SCMD;
-} a3000_scsiregs;
+};
 
 #define DAWR_A3000		(3)
 
diff --git a/drivers/scsi/a4000t.c b/drivers/scsi/a4000t.c
index 11ae6be..23c76f4 100644
--- a/drivers/scsi/a4000t.c
+++ b/drivers/scsi/a4000t.c
@@ -20,10 +20,6 @@
 
 #include "53c700.h"
 
-MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
-MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
-MODULE_LICENSE("GPL");
-
 
 static struct scsi_host_template a4000t_scsi_driver_template = {
 	.name		= "A4000T builtin SCSI",
@@ -32,30 +28,35 @@
 	.module		= THIS_MODULE,
 };
 
-static struct platform_device *a4000t_scsi_device;
 
-#define A4000T_SCSI_ADDR 0xdd0040
+#define A4000T_SCSI_OFFSET	0x40
 
-static int __devinit a4000t_probe(struct platform_device *dev)
+static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev)
 {
-	struct Scsi_Host *host;
+	struct resource *res;
+	phys_addr_t scsi_addr;
 	struct NCR_700_Host_Parameters *hostdata;
+	struct Scsi_Host *host;
 
-	if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
-		goto out;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
 
-	if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
+	if (!request_mem_region(res->start, resource_size(res),
 				"A4000T builtin SCSI"))
-		goto out;
+		return -EBUSY;
 
-	hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
+	hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters),
+			   GFP_KERNEL);
 	if (!hostdata) {
-		printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
+		dev_err(&pdev->dev, "Failed to allocate host data\n");
 		goto out_release;
 	}
 
+	scsi_addr = res->start + A4000T_SCSI_OFFSET;
+
 	/* Fill in the required pieces of hostdata */
-	hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
+	hostdata->base = (void __iomem *)ZTWO_VADDR(scsi_addr);
 	hostdata->clock = 50;
 	hostdata->chip710 = 1;
 	hostdata->dmode_extra = DMODE_FC2;
@@ -63,26 +64,25 @@
 
 	/* and register the chip */
 	host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata,
-			      &dev->dev);
+			      &pdev->dev);
 	if (!host) {
-		printk(KERN_ERR "a4000t-scsi: No host detected; "
-				"board configuration problem?\n");
+		dev_err(&pdev->dev,
+			"No host detected; board configuration problem?\n");
 		goto out_free;
 	}
 
 	host->this_id = 7;
-	host->base = A4000T_SCSI_ADDR;
+	host->base = scsi_addr;
 	host->irq = IRQ_AMIGA_PORTS;
 
 	if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
 			host)) {
-		printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
+		dev_err(&pdev->dev, "request_irq failed\n");
 		goto out_put_host;
 	}
 
-	platform_set_drvdata(dev, host);
+	platform_set_drvdata(pdev, host);
 	scsi_scan_host(host);
-
 	return 0;
 
  out_put_host:
@@ -90,58 +90,49 @@
  out_free:
 	kfree(hostdata);
  out_release:
-	release_mem_region(A4000T_SCSI_ADDR, 0x1000);
- out:
+	release_mem_region(res->start, resource_size(res));
 	return -ENODEV;
 }
 
-static __devexit int a4000t_device_remove(struct platform_device *dev)
+static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev)
 {
-	struct Scsi_Host *host = platform_get_drvdata(dev);
+	struct Scsi_Host *host = platform_get_drvdata(pdev);
 	struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
 	scsi_remove_host(host);
-
 	NCR_700_release(host);
 	kfree(hostdata);
 	free_irq(host->irq, host);
-	release_mem_region(A4000T_SCSI_ADDR, 0x1000);
-
+	release_mem_region(res->start, resource_size(res));
 	return 0;
 }
 
-static struct platform_driver a4000t_scsi_driver = {
-	.driver = {
-		.name           = "a4000t-scsi",
-		.owner          = THIS_MODULE,
+static struct platform_driver amiga_a4000t_scsi_driver = {
+	.remove = __exit_p(amiga_a4000t_scsi_remove),
+	.driver   = {
+		.name	= "amiga-a4000t-scsi",
+		.owner	= THIS_MODULE,
 	},
-	.probe          = a4000t_probe,
-	.remove         = __devexit_p(a4000t_device_remove),
 };
 
-static int __init a4000t_scsi_init(void)
+static int __init amiga_a4000t_scsi_init(void)
 {
-	int err;
-
-	err = platform_driver_register(&a4000t_scsi_driver);
-	if (err)
-		return err;
-
-	a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
-			-1, NULL, 0);
-	if (IS_ERR(a4000t_scsi_device)) {
-		platform_driver_unregister(&a4000t_scsi_driver);
-		return PTR_ERR(a4000t_scsi_device);
-	}
-
-	return err;
+	return platform_driver_probe(&amiga_a4000t_scsi_driver,
+				     amiga_a4000t_scsi_probe);
 }
 
-static void __exit a4000t_scsi_exit(void)
+module_init(amiga_a4000t_scsi_init);
+
+static void __exit amiga_a4000t_scsi_exit(void)
 {
-	platform_device_unregister(a4000t_scsi_device);
-	platform_driver_unregister(&a4000t_scsi_driver);
+	platform_driver_unregister(&amiga_a4000t_scsi_driver);
 }
 
-module_init(a4000t_scsi_init);
-module_exit(a4000t_scsi_exit);
+module_exit(amiga_a4000t_scsi_exit);
+
+MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / "
+	      "Kars de Jong <jongk@linux-m68k.org>");
+MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-a4000t-scsi");
diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index 9c0c911..1a5bf57 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -655,9 +655,9 @@
 				/* Does this really need to be GFP_DMA? */
 				p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 				if(!p) {
-					kfree (usg);
-					dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
+					dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 					  usg->sg[i].count,i,usg->count));
+					kfree(usg);
 					rcode = -ENOMEM;
 					goto cleanup;
 				}
diff --git a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
index ab646e5..ce5371b 100644
--- a/drivers/scsi/arcmsr/arcmsr.h
+++ b/drivers/scsi/arcmsr/arcmsr.h
@@ -48,7 +48,7 @@
 /*The limit of outstanding scsi command that firmware can handle*/
 #define ARCMSR_MAX_OUTSTANDING_CMD						256
 #define ARCMSR_MAX_FREECCB_NUM							320
-#define ARCMSR_DRIVER_VERSION		     "Driver Version 1.20.00.15 2008/02/27"
+#define ARCMSR_DRIVER_VERSION		     "Driver Version 1.20.00.15 2008/11/03"
 #define ARCMSR_SCSI_INITIATOR_ID						255
 #define ARCMSR_MAX_XFER_SECTORS							512
 #define ARCMSR_MAX_XFER_SECTORS_B						4096
@@ -110,6 +110,8 @@
 #define FUNCTION_SAY_HELLO			0x0807
 #define FUNCTION_SAY_GOODBYE			0x0808
 #define FUNCTION_FLUSH_ADAPTER_CACHE		0x0809
+#define FUNCTION_GET_FIRMWARE_STATUS			0x080A
+#define FUNCTION_HARDWARE_RESET			0x080B
 /* ARECA IO CONTROL CODE*/
 #define ARCMSR_MESSAGE_READ_RQBUFFER       \
 	ARECA_SATA_RAID | FUNCTION_READ_RQBUFFER
@@ -133,6 +135,7 @@
 #define ARCMSR_MESSAGE_RETURNCODE_OK              0x00000001
 #define ARCMSR_MESSAGE_RETURNCODE_ERROR           0x00000006
 #define ARCMSR_MESSAGE_RETURNCODE_3F              0x0000003F
+#define ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON	0x00000088
 /*
 *************************************************************
 **   structure for holding DMA address data
@@ -341,13 +344,13 @@
 	uint32_t	done_qbuffer[ARCMSR_MAX_HBB_POSTQUEUE];
 	uint32_t	postq_index;
 	uint32_t	doneq_index;
-	void		__iomem *drv2iop_doorbell_reg;
-	void		__iomem *drv2iop_doorbell_mask_reg;
-	void		__iomem *iop2drv_doorbell_reg;
-	void		__iomem *iop2drv_doorbell_mask_reg;
-	void		__iomem *msgcode_rwbuffer_reg;
-	void		__iomem *ioctl_wbuffer_reg;
-	void		__iomem *ioctl_rbuffer_reg;
+	uint32_t		__iomem *drv2iop_doorbell_reg;
+	uint32_t		__iomem *drv2iop_doorbell_mask_reg;
+	uint32_t		__iomem *iop2drv_doorbell_reg;
+	uint32_t		__iomem *iop2drv_doorbell_mask_reg;
+	uint32_t		__iomem *msgcode_rwbuffer_reg;
+	uint32_t		__iomem *ioctl_wbuffer_reg;
+	uint32_t		__iomem *ioctl_rbuffer_reg;
 };
 
 /*
@@ -375,6 +378,7 @@
 	/* message unit ATU inbound base address0 */
 
 	uint32_t			acb_flags;
+	uint8_t                   		adapter_index;
 	#define ACB_F_SCSISTOPADAPTER         	0x0001
 	#define ACB_F_MSG_STOP_BGRB     	0x0002
 	/* stop RAID background rebuild */
@@ -390,7 +394,7 @@
 	#define ACB_F_BUS_RESET               	0x0080
 	#define ACB_F_IOP_INITED              	0x0100
 	/* iop init */
-
+	#define ACB_F_FIRMWARE_TRAP           		0x0400
 	struct CommandControlBlock *			pccb_pool[ARCMSR_MAX_FREECCB_NUM];
 	/* used for memory free */
 	struct list_head		ccb_free_list;
@@ -423,12 +427,19 @@
 #define ARECA_RAID_GOOD               0xaa
 	uint32_t			num_resets;
 	uint32_t			num_aborts;
+	uint32_t			signature;
 	uint32_t			firm_request_len;
 	uint32_t			firm_numbers_queue;
 	uint32_t			firm_sdram_size;
 	uint32_t			firm_hd_channels;
 	char				firm_model[12];
 	char				firm_version[20];
+	char			device_map[20];			/*21,84-99*/
+	struct work_struct 		arcmsr_do_message_isr_bh;
+	struct timer_list		eternal_timer;
+	unsigned short		fw_state;
+	atomic_t 			rq_map_token;
+	int			ante_token_value;
 };/* HW_DEVICE_EXTENSION */
 /*
 *******************************************************************************
diff --git a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
index a4e04c5..07fdfe5 100644
--- a/drivers/scsi/arcmsr/arcmsr_attr.c
+++ b/drivers/scsi/arcmsr/arcmsr_attr.c
@@ -192,6 +192,7 @@
 	.attr = {
 		.name = "mu_read",
 		.mode = S_IRUSR ,
+		.owner = THIS_MODULE,
 	},
 	.size = 1032,
 	.read = arcmsr_sysfs_iop_message_read,
@@ -201,6 +202,7 @@
 	.attr = {
 		.name = "mu_write",
 		.mode = S_IWUSR,
+		.owner = THIS_MODULE,
 	},
 	.size = 1032,
 	.write = arcmsr_sysfs_iop_message_write,
@@ -210,6 +212,7 @@
 	.attr = {
 		.name = "mu_clear",
 		.mode = S_IWUSR,
+		.owner = THIS_MODULE,
 	},
 	.size = 1,
 	.write = arcmsr_sysfs_iop_message_clear,
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index ffbe219..ffa5479 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -72,8 +72,16 @@
 #include <scsi/scsicam.h>
 #include "arcmsr.h"
 
+#ifdef CONFIG_SCSI_ARCMSR_RESET
+	static int sleeptime = 20;
+	static int retrycount = 12;
+	module_param(sleeptime, int, S_IRUGO|S_IWUSR);
+	MODULE_PARM_DESC(sleeptime, "The waiting period for FW ready while bus reset");
+	module_param(retrycount, int, S_IRUGO|S_IWUSR);
+	MODULE_PARM_DESC(retrycount, "The retry count for FW ready while bus reset");
+#endif
 MODULE_AUTHOR("Erich Chen <support@areca.com.tw>");
-MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter");
+MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID Host Bus Adapter");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
 
@@ -96,6 +104,13 @@
 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
+static void arcmsr_request_device_map(unsigned long pacb);
+static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb);
+static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb);
+static void arcmsr_message_isr_bh_fn(struct work_struct *work);
+static void *arcmsr_get_firmware_spec(struct AdapterControlBlock *acb, int mode);
+static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
+
 static const char *arcmsr_info(struct Scsi_Host *);
 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
@@ -112,7 +127,7 @@
 
 static struct scsi_host_template arcmsr_scsi_host_template = {
 	.module			= THIS_MODULE,
-	.name			= "ARCMSR ARECA SATA/SAS RAID HOST Adapter"
+	.name			= "ARCMSR ARECA SATA/SAS RAID Host Bus Adapter"
 							ARCMSR_DRIVER_VERSION,
 	.info			= arcmsr_info,
 	.queuecommand		= arcmsr_queue_command,
@@ -128,16 +143,6 @@
 	.use_clustering		= ENABLE_CLUSTERING,
 	.shost_attrs		= arcmsr_host_attrs,
 };
-#ifdef CONFIG_SCSI_ARCMSR_AER
-static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev);
-static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
-						pci_channel_state_t state);
-
-static struct pci_error_handlers arcmsr_pci_error_handlers = {
-	.error_detected		= arcmsr_pci_error_detected,
-	.slot_reset		= arcmsr_pci_slot_reset,
-};
-#endif
 static struct pci_device_id arcmsr_device_id_table[] = {
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
@@ -166,9 +171,6 @@
 	.probe			= arcmsr_probe,
 	.remove			= arcmsr_remove,
 	.shutdown		= arcmsr_shutdown,
-	#ifdef CONFIG_SCSI_ARCMSR_AER
-	.err_handler		= &arcmsr_pci_error_handlers,
-	#endif
 };
 
 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
@@ -236,10 +238,9 @@
 		void *dma_coherent;
 		dma_addr_t dma_coherent_handle, dma_addr;
 		struct CommandControlBlock *ccb_tmp;
-		uint32_t intmask_org;
 		int i, j;
 
-		acb->pmuA = pci_ioremap_bar(pdev, 0);
+		acb->pmuA = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
 		if (!acb->pmuA) {
 			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n",
 							acb->host->host_no);
@@ -281,12 +282,6 @@
 		for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 			for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 				acb->devstate[i][j] = ARECA_RAID_GONE;
-
-		/*
-		** here we need to tell iop 331 our ccb_tmp.HighPart
-		** if ccb_tmp.HighPart is not zero
-		*/
-		intmask_org = arcmsr_disable_outbound_ints(acb);
 		}
 		break;
 
@@ -297,7 +292,6 @@
 		void __iomem *mem_base0, *mem_base1;
 		void *dma_coherent;
 		dma_addr_t dma_coherent_handle, dma_addr;
-		uint32_t intmask_org;
 		struct CommandControlBlock *ccb_tmp;
 		int i, j;
 
@@ -333,11 +327,13 @@
 		reg = (struct MessageUnit_B *)(dma_coherent +
 		ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
 		acb->pmuB = reg;
-		mem_base0 = pci_ioremap_bar(pdev, 0);
+		mem_base0 = ioremap(pci_resource_start(pdev, 0),
+					pci_resource_len(pdev, 0));
 		if (!mem_base0)
 			goto out;
 
-		mem_base1 = pci_ioremap_bar(pdev, 2);
+		mem_base1 = ioremap(pci_resource_start(pdev, 2),
+					pci_resource_len(pdev, 2));
 		if (!mem_base1) {
 			iounmap(mem_base0);
 			goto out;
@@ -357,12 +353,6 @@
 		for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
 			for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
 				acb->devstate[i][j] = ARECA_RAID_GOOD;
-
-		/*
-		** here we need to tell iop 331 our ccb_tmp.HighPart
-		** if ccb_tmp.HighPart is not zero
-		*/
-		intmask_org = arcmsr_disable_outbound_ints(acb);
 		}
 		break;
 	}
@@ -374,6 +364,88 @@
 		sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
 	return -ENOMEM;
 }
+static void arcmsr_message_isr_bh_fn(struct work_struct *work)
+{
+	struct AdapterControlBlock *acb = container_of(work, struct AdapterControlBlock, arcmsr_do_message_isr_bh);
+
+	switch (acb->adapter_type) {
+		case ACB_ADAPTER_TYPE_A: {
+
+			struct MessageUnit_A __iomem *reg  = acb->pmuA;
+			char *acb_dev_map = (char *)acb->device_map;
+			uint32_t __iomem *signature = (uint32_t __iomem *) (&reg->message_rwbuffer[0]);
+			char __iomem *devicemap = (char __iomem *) (&reg->message_rwbuffer[21]);
+			int target, lun;
+			struct scsi_device *psdev;
+			char diff;
+
+			atomic_inc(&acb->rq_map_token);
+			if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
+				for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
+					diff = (*acb_dev_map)^readb(devicemap);
+					if (diff != 0) {
+						char temp;
+						*acb_dev_map = readb(devicemap);
+						temp = *acb_dev_map;
+						for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
+							if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
+								scsi_add_device(acb->host, 0, target, lun);
+							} else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
+								psdev = scsi_device_lookup(acb->host, 0, target, lun);
+								if (psdev != NULL) {
+									scsi_remove_device(psdev);
+									scsi_device_put(psdev);
+								}
+							}
+							temp >>= 1;
+							diff >>= 1;
+						}
+					}
+					devicemap++;
+					acb_dev_map++;
+				}
+			}
+			break;
+		}
+
+		case ACB_ADAPTER_TYPE_B: {
+			struct MessageUnit_B *reg  = acb->pmuB;
+			char *acb_dev_map = (char *)acb->device_map;
+			uint32_t __iomem *signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer_reg[0]);
+			char __iomem *devicemap = (char __iomem *)(&reg->msgcode_rwbuffer_reg[21]);
+			int target, lun;
+			struct scsi_device *psdev;
+			char diff;
+
+			atomic_inc(&acb->rq_map_token);
+			if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) {
+				for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++) {
+					diff = (*acb_dev_map)^readb(devicemap);
+					if (diff != 0) {
+						char temp;
+						*acb_dev_map = readb(devicemap);
+						temp = *acb_dev_map;
+						for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
+							if ((temp & 0x01) == 1 && (diff & 0x01) == 1) {
+								scsi_add_device(acb->host, 0, target, lun);
+							} else if ((temp & 0x01) == 0 && (diff & 0x01) == 1) {
+								psdev = scsi_device_lookup(acb->host, 0, target, lun);
+								if (psdev != NULL) {
+									scsi_remove_device(psdev);
+									scsi_device_put(psdev);
+								}
+							}
+							temp >>= 1;
+							diff >>= 1;
+						}
+					}
+					devicemap++;
+					acb_dev_map++;
+				}
+			}
+		}
+	}
+}
 
 static int arcmsr_probe(struct pci_dev *pdev,
 	const struct pci_device_id *id)
@@ -432,17 +504,17 @@
 			   ACB_F_MESSAGE_WQBUFFER_READED);
 	acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
 	INIT_LIST_HEAD(&acb->ccb_free_list);
-
+	INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
 	error = arcmsr_alloc_ccb_pool(acb);
 	if (error)
 		goto out_release_regions;
 
+	arcmsr_iop_init(acb);
 	error = request_irq(pdev->irq, arcmsr_do_interrupt,
 			    IRQF_SHARED, "arcmsr", acb);
 	if (error)
 		goto out_free_ccb_pool;
 
-	arcmsr_iop_init(acb);
 	pci_set_drvdata(pdev, host);
 	if (strncmp(acb->firm_version, "V1.42", 5) >= 0)
 		host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B;
@@ -459,6 +531,14 @@
 	#ifdef CONFIG_SCSI_ARCMSR_AER
 	pci_enable_pcie_error_reporting(pdev);
 	#endif
+	atomic_set(&acb->rq_map_token, 16);
+	acb->fw_state = true;
+	init_timer(&acb->eternal_timer);
+	acb->eternal_timer.expires = jiffies + msecs_to_jiffies(10*HZ);
+	acb->eternal_timer.data = (unsigned long) acb;
+	acb->eternal_timer.function = &arcmsr_request_device_map;
+	add_timer(&acb->eternal_timer);
+
 	return 0;
  out_free_sysfs:
  out_free_irq:
@@ -518,40 +598,48 @@
 	return 0xff;
 }
 
-static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
+static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 
 	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
-	if (arcmsr_hba_wait_msgint_ready(acb))
+	if (arcmsr_hba_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
 			, acb->host->host_no);
+		return 0xff;
+	}
+	return 0x00;
 }
 
-static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
+static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_B *reg = acb->pmuB;
 
 	writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg);
-	if (arcmsr_hbb_wait_msgint_ready(acb))
+	if (arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
 			, acb->host->host_no);
+		return 0xff;
+	}
+	return 0x00;
 }
 
-static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
+static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
 {
+	uint8_t rtnval = 0;
 	switch (acb->adapter_type) {
 	case ACB_ADAPTER_TYPE_A: {
-		arcmsr_abort_hba_allcmd(acb);
+		rtnval = arcmsr_abort_hba_allcmd(acb);
 		}
 		break;
 
 	case ACB_ADAPTER_TYPE_B: {
-		arcmsr_abort_hbb_allcmd(acb);
+		rtnval = arcmsr_abort_hbb_allcmd(acb);
 		}
 	}
+	return rtnval;
 }
 
 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
@@ -649,8 +737,7 @@
 
 	case ACB_ADAPTER_TYPE_A : {
 		struct MessageUnit_A __iomem *reg = acb->pmuA;
-		orig_mask = readl(&reg->outbound_intmask)|\
-				ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
+		orig_mask = readl(&reg->outbound_intmask);
 		writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
 						&reg->outbound_intmask);
 		}
@@ -658,8 +745,7 @@
 
 	case ACB_ADAPTER_TYPE_B : {
 		struct MessageUnit_B *reg = acb->pmuB;
-		orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \
-					(~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
+		orig_mask = readl(reg->iop2drv_doorbell_mask_reg);
 		writel(0, reg->iop2drv_doorbell_mask_reg);
 		}
 		break;
@@ -795,12 +881,13 @@
 	struct AdapterControlBlock *acb =
 		(struct AdapterControlBlock *) host->hostdata;
 	int poll_count = 0;
-
 	arcmsr_free_sysfs_attr(acb);
 	scsi_remove_host(host);
+	flush_scheduled_work();
+	del_timer_sync(&acb->eternal_timer);
+	arcmsr_disable_outbound_ints(acb);
 	arcmsr_stop_adapter_bgrb(acb);
 	arcmsr_flush_adapter_cache(acb);
-	arcmsr_disable_outbound_ints(acb);
 	acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
 	acb->acb_flags &= ~ACB_F_IOP_INITED;
 
@@ -841,7 +928,9 @@
 	struct Scsi_Host *host = pci_get_drvdata(pdev);
 	struct AdapterControlBlock *acb =
 		(struct AdapterControlBlock *)host->hostdata;
-
+	del_timer_sync(&acb->eternal_timer);
+	arcmsr_disable_outbound_ints(acb);
+	flush_scheduled_work();
 	arcmsr_stop_adapter_bgrb(acb);
 	arcmsr_flush_adapter_cache(acb);
 }
@@ -861,7 +950,7 @@
 module_init(arcmsr_module_init);
 module_exit(arcmsr_module_exit);
 
-static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \
+static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
 						u32 intmask_org)
 {
 	u32 mask;
@@ -871,7 +960,8 @@
 	case ACB_ADAPTER_TYPE_A : {
 		struct MessageUnit_A __iomem *reg = acb->pmuA;
 		mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
-			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
+			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
+			     ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
 		writel(mask, &reg->outbound_intmask);
 		acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
 		}
@@ -879,8 +969,10 @@
 
 	case ACB_ADAPTER_TYPE_B : {
 		struct MessageUnit_B *reg = acb->pmuB;
-		mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \
-			ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE);
+		mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
+			ARCMSR_IOP2DRV_DATA_READ_OK |
+			ARCMSR_IOP2DRV_CDB_DONE |
+			ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
 		writel(mask, reg->iop2drv_doorbell_mask_reg);
 		acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
 		}
@@ -1048,8 +1140,8 @@
 	}
 	case ACB_ADAPTER_TYPE_B: {
 		struct MessageUnit_B *reg = acb->pmuB;
-		iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
-		iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
+		iounmap((u8 *)reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
+		iounmap((u8 *)reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
 		dma_free_coherent(&acb->pdev->dev,
 		(ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
 		sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
@@ -1249,13 +1341,36 @@
 		reg->doneq_index = index;
 	}
 }
+/*
+**********************************************************************************
+** Handle a message interrupt
+**
+** The only message interrupt we expect is in response to a query for the current adapter config.
+** We want this in order to compare the drivemap so that we can detect newly-attached drives.
+**********************************************************************************
+*/
+static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A *reg  = acb->pmuA;
 
+	/*clear interrupt and message state*/
+	writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
+	schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg  = acb->pmuB;
+
+	/*clear interrupt and message state*/
+	writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg);
+	schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb)
 {
 	uint32_t outbound_intstatus;
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 
-	outbound_intstatus = readl(&reg->outbound_intstatus) & \
+	outbound_intstatus = readl(&reg->outbound_intstatus) &
 							acb->outbound_int_enable;
 	if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))	{
 		return 1;
@@ -1267,6 +1382,10 @@
 	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
 		arcmsr_hba_postqueue_isr(acb);
 	}
+	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) 	{
+		/* messenger of "driver to iop commands" */
+		arcmsr_hba_message_isr(acb);
+	}
 	return 0;
 }
 
@@ -1275,13 +1394,14 @@
 	uint32_t outbound_doorbell;
 	struct MessageUnit_B *reg = acb->pmuB;
 
-	outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \
+	outbound_doorbell = readl(reg->iop2drv_doorbell_reg) &
 							acb->outbound_int_enable;
 	if (!outbound_doorbell)
 		return 1;
 
 	writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
-	/*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/
+	/*in case the last action of doorbell interrupt clearance is cached,
+	this action can push HW to write down the clear bit*/
 	readl(reg->iop2drv_doorbell_reg);
 	writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
 	if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) 	{
@@ -1293,6 +1413,10 @@
 	if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
 		arcmsr_hbb_postqueue_isr(acb);
 	}
+	if (outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
+		/* messenger of "driver to iop commands" */
+		arcmsr_hbb_message_isr(acb);
+	}
 
 	return 0;
 }
@@ -1360,7 +1484,7 @@
 	}
 }
 
-static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
 					struct scsi_cmnd *cmd)
 {
 	struct CMD_MESSAGE_FIELD *pcmdmessagefld;
@@ -1398,6 +1522,13 @@
 			retvalue = ARCMSR_MESSAGE_FAIL;
 			goto message_out;
 		}
+
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
+
 		ptmpQbuffer = ver_addr;
 		while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
 			&& (allxfer_len < 1031)) {
@@ -1444,6 +1575,12 @@
 			retvalue = ARCMSR_MESSAGE_FAIL;
 			goto message_out;
 		}
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
+
 		ptmpuserbuffer = ver_addr;
 		user_len = pcmdmessagefld->cmdmessage.Length;
 		memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
@@ -1496,6 +1633,11 @@
 
 	case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
 		uint8_t *pQbuffer = acb->rqbuffer;
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 
 		if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
 			acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
@@ -1511,6 +1653,11 @@
 
 	case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
 		uint8_t *pQbuffer = acb->wqbuffer;
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 
 		if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
 			acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
@@ -1529,6 +1676,11 @@
 
 	case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
 		uint8_t *pQbuffer;
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 
 		if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
 			acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
@@ -1551,13 +1703,22 @@
 		break;
 
 	case ARCMSR_MESSAGE_RETURN_CODE_3F: {
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 		pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
 		}
 		break;
 
 	case ARCMSR_MESSAGE_SAY_HELLO: {
 		int8_t *hello_string = "Hello! I am ARCMSR";
-
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 		memcpy(pcmdmessagefld->messagedatabuffer, hello_string
 			, (int16_t)strlen(hello_string));
 		pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
@@ -1565,10 +1726,20 @@
 		break;
 
 	case ARCMSR_MESSAGE_SAY_GOODBYE:
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 		arcmsr_iop_parking(acb);
 		break;
 
 	case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
+		if (!acb->fw_state) {
+			pcmdmessagefld->cmdmessage.ReturnCode =
+			ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+			goto message_out;
+		}
 		arcmsr_flush_adapter_cache(acb);
 		break;
 
@@ -1651,16 +1822,57 @@
 	struct CommandControlBlock *ccb;
 	int target = cmd->device->id;
 	int lun = cmd->device->lun;
-
+	uint8_t scsicmd = cmd->cmnd[0];
 	cmd->scsi_done = done;
 	cmd->host_scribble = NULL;
 	cmd->result = 0;
+
+	if ((scsicmd == SYNCHRONIZE_CACHE) || (scsicmd == SEND_DIAGNOSTIC)) {
+		if (acb->devstate[target][lun] == ARECA_RAID_GONE) {
+			cmd->result = (DID_NO_CONNECT << 16);
+		}
+		cmd->scsi_done(cmd);
+		return 0;
+	}
+
 	if (acb->acb_flags & ACB_F_BUS_RESET) {
-		printk(KERN_NOTICE "arcmsr%d: bus reset"
-			" and return busy \n"
-			, acb->host->host_no);
+		switch (acb->adapter_type) {
+			case ACB_ADAPTER_TYPE_A: {
+				struct MessageUnit_A __iomem *reg = acb->pmuA;
+				uint32_t intmask_org, outbound_doorbell;
+
+				if ((readl(&reg->outbound_msgaddr1) &
+					ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
+					printk(KERN_NOTICE "arcmsr%d: bus reset and return busy\n",
+						acb->host->host_no);
 		return SCSI_MLQUEUE_HOST_BUSY;
 	}
+
+				acb->acb_flags &= ~ACB_F_FIRMWARE_TRAP;
+				printk(KERN_NOTICE "arcmsr%d: hardware bus reset and reset ok\n",
+					acb->host->host_no);
+				/* disable all outbound interrupt */
+				intmask_org = arcmsr_disable_outbound_ints(acb);
+				arcmsr_get_firmware_spec(acb, 1);
+				/*start background rebuild*/
+				arcmsr_start_adapter_bgrb(acb);
+				/* clear Qbuffer if door bell ringed */
+				outbound_doorbell = readl(&reg->outbound_doorbell);
+				/*clear interrupt */
+				writel(outbound_doorbell, &reg->outbound_doorbell);
+				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
+					&reg->inbound_doorbell);
+				/* enable outbound Post Queue,outbound doorbell Interrupt */
+				arcmsr_enable_outbound_ints(acb, intmask_org);
+				acb->acb_flags |= ACB_F_IOP_INITED;
+				acb->acb_flags &= ~ACB_F_BUS_RESET;
+			}
+			break;
+			case ACB_ADAPTER_TYPE_B: {
+			}
+		}
+	}
+
 	if (target == 16) {
 		/* virtual device for iop message transfer */
 		arcmsr_handle_virtual_command(acb, cmd);
@@ -1699,21 +1911,25 @@
 	return 0;
 }
 
-static void arcmsr_get_hba_config(struct AdapterControlBlock *acb)
+static void *arcmsr_get_hba_config(struct AdapterControlBlock *acb, int mode)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
 	char *acb_firm_model = acb->firm_model;
 	char *acb_firm_version = acb->firm_version;
+	char *acb_device_map = acb->device_map;
 	char __iomem *iop_firm_model = (char __iomem *)(&reg->message_rwbuffer[15]);
 	char __iomem *iop_firm_version = (char __iomem *)(&reg->message_rwbuffer[17]);
+	char __iomem *iop_device_map = (char __iomem *) (&reg->message_rwbuffer[21]);
 	int count;
 
 	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
 	if (arcmsr_hba_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
 			miscellaneous data' timeout \n", acb->host->host_no);
+		return NULL;
 	}
 
+	if (mode == 1) {
 	count = 8;
 	while (count) {
 		*acb_firm_model = readb(iop_firm_model);
@@ -1730,34 +1946,48 @@
 		count--;
 	}
 
+		count = 16;
+		while (count) {
+			*acb_device_map = readb(iop_device_map);
+			acb_device_map++;
+			iop_device_map++;
+			count--;
+		}
+
 	printk(KERN_INFO 	"ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n"
 		, acb->host->host_no
 		, acb->firm_version);
-
+		acb->signature = readl(&reg->message_rwbuffer[0]);
 	acb->firm_request_len = readl(&reg->message_rwbuffer[1]);
 	acb->firm_numbers_queue = readl(&reg->message_rwbuffer[2]);
 	acb->firm_sdram_size = readl(&reg->message_rwbuffer[3]);
 	acb->firm_hd_channels = readl(&reg->message_rwbuffer[4]);
 }
-
-static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
+	return reg->message_rwbuffer;
+}
+static void __iomem *arcmsr_get_hbb_config(struct AdapterControlBlock *acb, int mode)
 {
 	struct MessageUnit_B *reg = acb->pmuB;
 	uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg;
 	char *acb_firm_model = acb->firm_model;
 	char *acb_firm_version = acb->firm_version;
+	char *acb_device_map = acb->device_map;
 	char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]);
 	/*firm_model,15,60-67*/
 	char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]);
 	/*firm_version,17,68-83*/
+	char __iomem *iop_device_map = (char __iomem *) (&lrwbuffer[21]);
+	/*firm_version,21,84-99*/
 	int count;
 
 	writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg);
 	if (arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
 			miscellaneous data' timeout \n", acb->host->host_no);
+		return NULL;
 	}
 
+	if (mode == 1) {
 	count = 8;
 	while (count)
 	{
@@ -1776,11 +2006,20 @@
 		count--;
 	}
 
+		count = 16;
+		while (count) {
+			*acb_device_map = readb(iop_device_map);
+			acb_device_map++;
+			iop_device_map++;
+			count--;
+		}
+
 	printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n",
 			acb->host->host_no,
 			acb->firm_version);
 
-	lrwbuffer++;
+		acb->signature = readl(lrwbuffer++);
+		/*firm_signature,1,00-03*/
 	acb->firm_request_len = readl(lrwbuffer++);
 	/*firm_request_len,1,04-07*/
 	acb->firm_numbers_queue = readl(lrwbuffer++);
@@ -1790,20 +2029,23 @@
 	acb->firm_hd_channels = readl(lrwbuffer);
 	/*firm_ide_channels,4,16-19*/
 }
-
-static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
+	return reg->msgcode_rwbuffer_reg;
+}
+static void *arcmsr_get_firmware_spec(struct AdapterControlBlock *acb, int mode)
 {
+	void *rtnval = 0;
 	switch (acb->adapter_type) {
 	case ACB_ADAPTER_TYPE_A: {
-		arcmsr_get_hba_config(acb);
+		rtnval = arcmsr_get_hba_config(acb, mode);
 		}
 		break;
 
 	case ACB_ADAPTER_TYPE_B: {
-		arcmsr_get_hbb_config(acb);
+		rtnval = arcmsr_get_hbb_config(acb, mode);
 		}
 		break;
 	}
+	return rtnval;
 }
 
 static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
@@ -2043,6 +2285,66 @@
 	}
 }
 
+static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+
+	if (unlikely(atomic_read(&acb->rq_map_token) == 0)) {
+		acb->fw_state = false;
+	} else {
+	/*to prevent rq_map_token from changing by other interrupt, then
+	avoid the dead-lock*/
+		acb->fw_state = true;
+		atomic_dec(&acb->rq_map_token);
+		if (!(acb->fw_state) ||
+			(acb->ante_token_value == atomic_read(&acb->rq_map_token))) {
+			atomic_set(&acb->rq_map_token, 16);
+		}
+		acb->ante_token_value = atomic_read(&acb->rq_map_token);
+		writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+	}
+	mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6000));
+	return;
+}
+
+static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B __iomem *reg = acb->pmuB;
+
+	if (unlikely(atomic_read(&acb->rq_map_token) == 0)) {
+		acb->fw_state = false;
+	} else {
+	/*to prevent rq_map_token from changing by other interrupt, then
+	avoid the dead-lock*/
+		acb->fw_state = true;
+		atomic_dec(&acb->rq_map_token);
+		if (!(acb->fw_state) ||
+			(acb->ante_token_value == atomic_read(&acb->rq_map_token))) {
+			atomic_set(&acb->rq_map_token, 16);
+		}
+		acb->ante_token_value = atomic_read(&acb->rq_map_token);
+		writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg);
+	}
+	mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6000));
+	return;
+}
+
+static void arcmsr_request_device_map(unsigned long pacb)
+{
+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb;
+
+	switch (acb->adapter_type) {
+		case ACB_ADAPTER_TYPE_A: {
+			arcmsr_request_hba_device_map(acb);
+		}
+		break;
+		case ACB_ADAPTER_TYPE_B: {
+			arcmsr_request_hbb_device_map(acb);
+		}
+		break;
+	}
+}
+
 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
 {
 	struct MessageUnit_A __iomem *reg = acb->pmuA;
@@ -2121,6 +2423,60 @@
 	return;
 }
 
+static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
+{
+	uint8_t value[64];
+	int i;
+
+	/* backup pci config data */
+	for (i = 0; i < 64; i++) {
+		pci_read_config_byte(acb->pdev, i, &value[i]);
+	}
+	/* hardware reset signal */
+	pci_write_config_byte(acb->pdev, 0x84, 0x20);
+	msleep(1000);
+	/* write back pci config data */
+	for (i = 0; i < 64; i++) {
+		pci_write_config_byte(acb->pdev, i, value[i]);
+	}
+	msleep(1000);
+	return;
+}
+/*
+****************************************************************************
+****************************************************************************
+*/
+#ifdef CONFIG_SCSI_ARCMSR_RESET
+	int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd)
+	{
+			struct Scsi_Host *shost = NULL;
+			spinlock_t *host_lock = NULL;
+			int i, isleep;
+
+			shost = cmd->device->host;
+			host_lock = shost->host_lock;
+
+			printk(KERN_NOTICE "Host %d bus reset over, sleep %d seconds (busy %d, can queue %d) ...........\n",
+					shost->host_no, sleeptime, shost->host_busy, shost->can_queue);
+			isleep = sleeptime / 10;
+			spin_unlock_irq(host_lock);
+			if (isleep > 0) {
+				for (i = 0; i < isleep; i++) {
+					msleep(10000);
+					printk(KERN_NOTICE "^%d^\n", i);
+				}
+			}
+
+			isleep = sleeptime % 10;
+			if (isleep > 0) {
+				msleep(isleep * 1000);
+				printk(KERN_NOTICE "^v^\n");
+			}
+			spin_lock_irq(host_lock);
+			printk(KERN_NOTICE "***** wake up *****\n");
+			return 0;
+	}
+#endif
 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
 {
 	uint32_t intmask_org;
@@ -2129,7 +2485,7 @@
        intmask_org = arcmsr_disable_outbound_ints(acb);
 	arcmsr_wait_firmware_ready(acb);
 	arcmsr_iop_confirm(acb);
-	arcmsr_get_firmware_spec(acb);
+	arcmsr_get_firmware_spec(acb, 1);
 	/*start background rebuild*/
 	arcmsr_start_adapter_bgrb(acb);
 	/* empty doorbell Qbuffer if door bell ringed */
@@ -2140,51 +2496,110 @@
 	acb->acb_flags |= ACB_F_IOP_INITED;
 }
 
-static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
+static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
 {
 	struct CommandControlBlock *ccb;
 	uint32_t intmask_org;
+	uint8_t rtnval = 0x00;
 	int i = 0;
 
 	if (atomic_read(&acb->ccboutstandingcount) != 0) {
-		/* talk to iop 331 outstanding command aborted */
-		arcmsr_abort_allcmd(acb);
-
-		/* wait for 3 sec for all command aborted*/
-		ssleep(3);
-
 		/* disable all outbound interrupt */
 		intmask_org = arcmsr_disable_outbound_ints(acb);
+		/* talk to iop 331 outstanding command aborted */
+		rtnval = arcmsr_abort_allcmd(acb);
+		/* wait for 3 sec for all command aborted*/
+		ssleep(3);
 		/* clear all outbound posted Q */
 		arcmsr_done4abort_postqueue(acb);
 		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 			ccb = acb->pccb_pool[i];
 			if (ccb->startdone == ARCMSR_CCB_START) {
-				ccb->startdone = ARCMSR_CCB_ABORTED;
 				arcmsr_ccb_complete(ccb, 1);
 			}
 		}
+		atomic_set(&acb->ccboutstandingcount, 0);
 		/* enable all outbound interrupt */
 		arcmsr_enable_outbound_ints(acb, intmask_org);
+		return rtnval;
 	}
+	return rtnval;
 }
 
 static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
 {
 	struct AdapterControlBlock *acb =
 		(struct AdapterControlBlock *)cmd->device->host->hostdata;
-	int i;
+	int retry = 0;
 
-	acb->num_resets++;
+	if (acb->acb_flags & ACB_F_BUS_RESET)
+		return SUCCESS;
+
+	printk(KERN_NOTICE "arcmsr%d: bus reset ..... \n", acb->adapter_index);
 	acb->acb_flags |= ACB_F_BUS_RESET;
-	for (i = 0; i < 400; i++) {
-		if (!atomic_read(&acb->ccboutstandingcount))
-			break;
-		arcmsr_interrupt(acb);/* FIXME: need spinlock */
-		msleep(25);
+	acb->num_resets++;
+	while (atomic_read(&acb->ccboutstandingcount) != 0 && retry < 4) {
+		arcmsr_interrupt(acb);
+		retry++;
 	}
-	arcmsr_iop_reset(acb);
+
+	if (arcmsr_iop_reset(acb)) {
+		switch (acb->adapter_type) {
+		case ACB_ADAPTER_TYPE_A: {
+			printk(KERN_NOTICE "arcmsr%d: do hardware bus reset, num_resets = %d num_aborts = %d \n",
+				acb->adapter_index, acb->num_resets, acb->num_aborts);
+			arcmsr_hardware_reset(acb);
+			acb->acb_flags |= ACB_F_FIRMWARE_TRAP;
+			acb->acb_flags &= ~ACB_F_IOP_INITED;
+			#ifdef CONFIG_SCSI_ARCMSR_RESET
+			struct MessageUnit_A __iomem *reg = acb->pmuA;
+			uint32_t intmask_org, outbound_doorbell;
+			int retry_count = 0;
+sleep_again:
+			arcmsr_sleep_for_bus_reset(cmd);
+			if ((readl(&reg->outbound_msgaddr1) &
+			ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) {
+			printk(KERN_NOTICE "arcmsr%d: hardware bus reset and return busy, retry=%d \n",
+			acb->host->host_no, retry_count);
+			if (retry_count > retrycount) {
+				printk(KERN_NOTICE "arcmsr%d: hardware bus reset and return busy, retry aborted \n",
+				acb->host->host_no);
+			return SUCCESS;
+			}
+			retry_count++;
+			goto sleep_again;
+			}
+			acb->acb_flags &= ~ACB_F_FIRMWARE_TRAP;
+			acb->acb_flags |= ACB_F_IOP_INITED;
+			acb->acb_flags &= ~ACB_F_BUS_RESET;
+			printk(KERN_NOTICE "arcmsr%d: hardware bus reset and reset ok \n",
+				acb->host->host_no);
+			/* disable all outbound interrupt */
+			intmask_org = arcmsr_disable_outbound_ints(acb);
+			arcmsr_get_firmware_spec(acb, 1);
+			/*start	background rebuild*/
+			arcmsr_start_adapter_bgrb(acb);
+			/* clear Qbuffer if door bell ringed */
+			outbound_doorbell = readl(&reg->outbound_doorbell);
+			writel(outbound_doorbell, &reg->outbound_doorbell); /*clear interrupt */
+			writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
+			/* enable outbound Post Queue,outbound doorbell Interrupt */
+			arcmsr_enable_outbound_ints(acb, intmask_org);
+			atomic_set(&acb->rq_map_token, 16);
+			init_timer(&acb->eternal_timer);
+			acb->eternal_timer.expires = jiffies + msecs_to_jiffies(20*HZ);
+			acb->eternal_timer.data = (unsigned long) acb;
+			acb->eternal_timer.function = &arcmsr_request_device_map;
+			add_timer(&acb->eternal_timer);
+			#endif
+		}
+			break;
+		case ACB_ADAPTER_TYPE_B: {
+	}
+		}
+	} else {
 	acb->acb_flags &= ~ACB_F_BUS_RESET;
+	}
 	return SUCCESS;
 }
 
@@ -2277,98 +2692,3 @@
 			ARCMSR_DRIVER_VERSION);
 	return buf;
 }
-#ifdef CONFIG_SCSI_ARCMSR_AER
-static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev)
-{
-	struct Scsi_Host *host = pci_get_drvdata(pdev);
-	struct AdapterControlBlock *acb =
-		(struct AdapterControlBlock *) host->hostdata;
-	uint32_t intmask_org;
-	int i, j;
-
-	if (pci_enable_device(pdev)) {
-		return PCI_ERS_RESULT_DISCONNECT;
-	}
-	pci_set_master(pdev);
-	intmask_org = arcmsr_disable_outbound_ints(acb);
-	acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
-			   ACB_F_MESSAGE_RQBUFFER_CLEARED |
-			   ACB_F_MESSAGE_WQBUFFER_READED);
-	acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
-	for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
-		for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
-			acb->devstate[i][j] = ARECA_RAID_GONE;
-
-	arcmsr_wait_firmware_ready(acb);
-	arcmsr_iop_confirm(acb);
-       /* disable all outbound interrupt */
-	arcmsr_get_firmware_spec(acb);
-	/*start background rebuild*/
-	arcmsr_start_adapter_bgrb(acb);
-	/* empty doorbell Qbuffer if door bell ringed */
-	arcmsr_clear_doorbell_queue_buffer(acb);
-	arcmsr_enable_eoi_mode(acb);
-	/* enable outbound Post Queue,outbound doorbell Interrupt */
-	arcmsr_enable_outbound_ints(acb, intmask_org);
-	acb->acb_flags |= ACB_F_IOP_INITED;
-
-	pci_enable_pcie_error_reporting(pdev);
-	return PCI_ERS_RESULT_RECOVERED;
-}
-
-static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev)
-{
-	struct Scsi_Host *host = pci_get_drvdata(pdev);
-	struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata;
-	struct CommandControlBlock *ccb;
-	uint32_t intmask_org;
-	int i = 0;
-
-	if (atomic_read(&acb->ccboutstandingcount) != 0) {
-		/* talk to iop 331 outstanding command aborted */
-		arcmsr_abort_allcmd(acb);
-		/* wait for 3 sec for all command aborted*/
-		ssleep(3);
-		/* disable all outbound interrupt */
-		intmask_org = arcmsr_disable_outbound_ints(acb);
-		/* clear all outbound posted Q */
-		arcmsr_done4abort_postqueue(acb);
-		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
-			ccb = acb->pccb_pool[i];
-			if (ccb->startdone == ARCMSR_CCB_START) {
-				ccb->startdone = ARCMSR_CCB_ABORTED;
-				arcmsr_ccb_complete(ccb, 1);
-			}
-		}
-		/* enable all outbound interrupt */
-		arcmsr_enable_outbound_ints(acb, intmask_org);
-	}
-	pci_disable_device(pdev);
-}
-
-static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev)
-{
-			struct Scsi_Host *host = pci_get_drvdata(pdev);
-			struct AdapterControlBlock *acb	= \
-				(struct AdapterControlBlock *)host->hostdata;
-
-			arcmsr_stop_adapter_bgrb(acb);
-			arcmsr_flush_adapter_cache(acb);
-}
-
-static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
-						pci_channel_state_t state)
-{
-	switch (state) {
-	case pci_channel_io_frozen:
-			arcmsr_pci_ers_need_reset_forepart(pdev);
-			return PCI_ERS_RESULT_NEED_RESET;
-	case pci_channel_io_perm_failure:
-			arcmsr_pci_ers_disconnect_forepart(pdev);
-			return PCI_ERS_RESULT_DISCONNECT;
-			break;
-	default:
-			return PCI_ERS_RESULT_NEED_RESET;
-	  }
-}
-#endif
diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index e641922..350cbea 100644
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -167,10 +167,9 @@
 				&nonemb_cmd.dma);
 	if (nonemb_cmd.va == NULL) {
 		SE_DEBUG(DBG_LVL_1,
-			 "Failed to allocate memory for"
-			 "mgmt_invalidate_icds \n");
+			 "Failed to allocate memory for mgmt_invalidate_icds\n");
 		spin_unlock(&ctrl->mbox_lock);
-		return -1;
+		return 0;
 	}
 	nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
 	req = nonemb_cmd.va;
diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c
index 0c08e18..3a7b3f8 100644
--- a/drivers/scsi/bfa/bfa_core.c
+++ b/drivers/scsi/bfa/bfa_core.c
@@ -84,11 +84,32 @@
 	for (i = 0; hal_mods[i]; i++)
 		hal_mods[i]->meminfo(cfg, &km_len, &dm_len);
 
+	dm_len += bfa_port_meminfo();
 
 	meminfo->meminfo[BFA_MEM_TYPE_KVA - 1].mem_len = km_len;
 	meminfo->meminfo[BFA_MEM_TYPE_DMA - 1].mem_len = dm_len;
 }
 
+static void
+bfa_com_port_attach(struct bfa_s *bfa, struct bfa_meminfo_s *mi)
+{
+	struct bfa_port_s       *port = &bfa->modules.port;
+	uint32_t                dm_len;
+	uint8_t                 *dm_kva;
+	uint64_t                dm_pa;
+
+	dm_len = bfa_port_meminfo();
+	dm_kva = bfa_meminfo_dma_virt(mi);
+	dm_pa  = bfa_meminfo_dma_phys(mi);
+
+	memset(port, 0, sizeof(struct bfa_port_s));
+	bfa_port_attach(port, &bfa->ioc, bfa, bfa->trcmod, bfa->logm);
+	bfa_port_mem_claim(port, dm_kva, dm_pa);
+
+	bfa_meminfo_dma_virt(mi) = dm_kva + dm_len;
+	bfa_meminfo_dma_phys(mi) = dm_pa + dm_len;
+}
+
 /**
  * Use this function to do attach the driver instance with the BFA
  * library. This function will not trigger any HW initialization
@@ -140,6 +161,7 @@
 	for (i = 0; hal_mods[i]; i++)
 		hal_mods[i]->attach(bfa, bfad, cfg, meminfo, pcidev);
 
+	bfa_com_port_attach(bfa, meminfo);
 }
 
 /**
diff --git a/drivers/scsi/gvp11.c b/drivers/scsi/gvp11.c
index 18b7102..2ce26eb 100644
--- a/drivers/scsi/gvp11.c
+++ b/drivers/scsi/gvp11.c
@@ -1,36 +1,35 @@
 #include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/zorro.h>
 
-#include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/amigaints.h>
 #include <asm/amigahw.h>
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <linux/spinlock.h>
 
 #include "scsi.h"
-#include <scsi/scsi_host.h>
 #include "wd33c93.h"
 #include "gvp11.h"
 
-#include <linux/stat.h>
 
+#define CHECK_WD33C93
 
-#define DMA(ptr)	((gvp11_scsiregs *)((ptr)->base))
+struct gvp11_hostdata {
+	struct WD33C93_hostdata wh;
+	struct gvp11_scsiregs *regs;
+};
 
-static irqreturn_t gvp11_intr(int irq, void *_instance)
+static irqreturn_t gvp11_intr(int irq, void *data)
 {
+	struct Scsi_Host *instance = data;
+	struct gvp11_hostdata *hdata = shost_priv(instance);
+	unsigned int status = hdata->regs->CNTR;
 	unsigned long flags;
-	unsigned int status;
-	struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
 
-	status = DMA(instance)->CNTR;
 	if (!(status & GVP11_DMAC_INT_PENDING))
 		return IRQ_NONE;
 
@@ -50,64 +49,66 @@
 static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 {
 	struct Scsi_Host *instance = cmd->device->host;
-	struct WD33C93_hostdata *hdata = shost_priv(instance);
+	struct gvp11_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct gvp11_scsiregs *regs = hdata->regs;
 	unsigned short cntr = GVP11_DMAC_INT_ENABLE;
 	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
 	int bank_mask;
 	static int scsi_alloc_out_of_range = 0;
 
 	/* use bounce buffer if the physical address is bad */
-	if (addr & hdata->dma_xfer_mask) {
-		hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
+	if (addr & wh->dma_xfer_mask) {
+		wh->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff;
 
 		if (!scsi_alloc_out_of_range) {
-			hdata->dma_bounce_buffer =
-				kmalloc(hdata->dma_bounce_len, GFP_KERNEL);
-			hdata->dma_buffer_pool = BUF_SCSI_ALLOCED;
+			wh->dma_bounce_buffer =
+				kmalloc(wh->dma_bounce_len, GFP_KERNEL);
+			wh->dma_buffer_pool = BUF_SCSI_ALLOCED;
 		}
 
 		if (scsi_alloc_out_of_range ||
-		    !hdata->dma_bounce_buffer) {
-			hdata->dma_bounce_buffer =
-				amiga_chip_alloc(hdata->dma_bounce_len,
+		    !wh->dma_bounce_buffer) {
+			wh->dma_bounce_buffer =
+				amiga_chip_alloc(wh->dma_bounce_len,
 						 "GVP II SCSI Bounce Buffer");
 
-			if (!hdata->dma_bounce_buffer) {
-				hdata->dma_bounce_len = 0;
+			if (!wh->dma_bounce_buffer) {
+				wh->dma_bounce_len = 0;
 				return 1;
 			}
 
-			hdata->dma_buffer_pool = BUF_CHIP_ALLOCED;
+			wh->dma_buffer_pool = BUF_CHIP_ALLOCED;
 		}
 
 		/* check if the address of the bounce buffer is OK */
-		addr = virt_to_bus(hdata->dma_bounce_buffer);
+		addr = virt_to_bus(wh->dma_bounce_buffer);
 
-		if (addr & hdata->dma_xfer_mask) {
+		if (addr & wh->dma_xfer_mask) {
 			/* fall back to Chip RAM if address out of range */
-			if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) {
-				kfree(hdata->dma_bounce_buffer);
+			if (wh->dma_buffer_pool == BUF_SCSI_ALLOCED) {
+				kfree(wh->dma_bounce_buffer);
 				scsi_alloc_out_of_range = 1;
 			} else {
-				amiga_chip_free(hdata->dma_bounce_buffer);
+				amiga_chip_free(wh->dma_bounce_buffer);
 			}
 
-			hdata->dma_bounce_buffer =
-				amiga_chip_alloc(hdata->dma_bounce_len,
+			wh->dma_bounce_buffer =
+				amiga_chip_alloc(wh->dma_bounce_len,
 						 "GVP II SCSI Bounce Buffer");
 
-			if (!hdata->dma_bounce_buffer) {
-				hdata->dma_bounce_len = 0;
+			if (!wh->dma_bounce_buffer) {
+				wh->dma_bounce_len = 0;
 				return 1;
 			}
 
-			addr = virt_to_bus(hdata->dma_bounce_buffer);
-			hdata->dma_buffer_pool = BUF_CHIP_ALLOCED;
+			addr = virt_to_bus(wh->dma_bounce_buffer);
+			wh->dma_buffer_pool = BUF_CHIP_ALLOCED;
 		}
 
 		if (!dir_in) {
 			/* copy to bounce buffer for a write */
-			memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr,
+			memcpy(wh->dma_bounce_buffer, cmd->SCp.ptr,
 			       cmd->SCp.this_residual);
 		}
 	}
@@ -116,11 +117,11 @@
 	if (!dir_in)
 		cntr |= GVP11_DMAC_DIR_WRITE;
 
-	hdata->dma_dir = dir_in;
-	DMA(cmd->device->host)->CNTR = cntr;
+	wh->dma_dir = dir_in;
+	regs->CNTR = cntr;
 
 	/* setup DMA *physical* address */
-	DMA(cmd->device->host)->ACR = addr;
+	regs->ACR = addr;
 
 	if (dir_in) {
 		/* invalidate any cache */
@@ -130,12 +131,12 @@
 		cache_push(addr, cmd->SCp.this_residual);
 	}
 
-	bank_mask = (~hdata->dma_xfer_mask >> 18) & 0x01c0;
+	bank_mask = (~wh->dma_xfer_mask >> 18) & 0x01c0;
 	if (bank_mask)
-		DMA(cmd->device->host)->BANK = bank_mask & (addr >> 18);
+		regs->BANK = bank_mask & (addr >> 18);
 
 	/* start DMA */
-	DMA(cmd->device->host)->ST_DMA = 1;
+	regs->ST_DMA = 1;
 
 	/* return success */
 	return 0;
@@ -144,236 +145,53 @@
 static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 		     int status)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(instance);
+	struct gvp11_hostdata *hdata = shost_priv(instance);
+	struct WD33C93_hostdata *wh = &hdata->wh;
+	struct gvp11_scsiregs *regs = hdata->regs;
 
 	/* stop DMA */
-	DMA(instance)->SP_DMA = 1;
+	regs->SP_DMA = 1;
 	/* remove write bit from CONTROL bits */
-	DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
+	regs->CNTR = GVP11_DMAC_INT_ENABLE;
 
 	/* copy from a bounce buffer, if necessary */
-	if (status && hdata->dma_bounce_buffer) {
-		if (hdata->dma_dir && SCpnt)
-			memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer,
+	if (status && wh->dma_bounce_buffer) {
+		if (wh->dma_dir && SCpnt)
+			memcpy(SCpnt->SCp.ptr, wh->dma_bounce_buffer,
 			       SCpnt->SCp.this_residual);
 
-		if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED)
-			kfree(hdata->dma_bounce_buffer);
+		if (wh->dma_buffer_pool == BUF_SCSI_ALLOCED)
+			kfree(wh->dma_bounce_buffer);
 		else
-			amiga_chip_free(hdata->dma_bounce_buffer);
+			amiga_chip_free(wh->dma_bounce_buffer);
 
-		hdata->dma_bounce_buffer = NULL;
-		hdata->dma_bounce_len = 0;
+		wh->dma_bounce_buffer = NULL;
+		wh->dma_bounce_len = 0;
 	}
 }
 
-#define CHECK_WD33C93
-
-int __init gvp11_detect(struct scsi_host_template *tpnt)
-{
-	static unsigned char called = 0;
-	struct Scsi_Host *instance;
-	unsigned long address;
-	unsigned int epc;
-	struct zorro_dev *z = NULL;
-	unsigned int default_dma_xfer_mask;
-	struct WD33C93_hostdata *hdata;
-	wd33c93_regs regs;
-	int num_gvp11 = 0;
-#ifdef CHECK_WD33C93
-	volatile unsigned char *sasr_3393, *scmd_3393;
-	unsigned char save_sasr;
-	unsigned char q, qq;
-#endif
-
-	if (!MACH_IS_AMIGA || called)
-		return 0;
-	called = 1;
-
-	tpnt->proc_name = "GVP11";
-	tpnt->proc_info = &wd33c93_proc_info;
-
-	while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
-		/*
-		 * This should (hopefully) be the correct way to identify
-		 * all the different GVP SCSI controllers (except for the
-		 * SERIES I though).
-		 */
-
-		if (z->id == ZORRO_PROD_GVP_COMBO_030_R3_SCSI ||
-		    z->id == ZORRO_PROD_GVP_SERIES_II)
-			default_dma_xfer_mask = ~0x00ffffff;
-		else if (z->id == ZORRO_PROD_GVP_GFORCE_030_SCSI ||
-			 z->id == ZORRO_PROD_GVP_A530_SCSI ||
-			 z->id == ZORRO_PROD_GVP_COMBO_030_R4_SCSI)
-			default_dma_xfer_mask = ~0x01ffffff;
-		else if (z->id == ZORRO_PROD_GVP_A1291 ||
-			 z->id == ZORRO_PROD_GVP_GFORCE_040_SCSI_1)
-			default_dma_xfer_mask = ~0x07ffffff;
-		else
-			continue;
-
-		/*
-		 * Rumors state that some GVP ram boards use the same product
-		 * code as the SCSI controllers. Therefore if the board-size
-		 * is not 64KB we asume it is a ram board and bail out.
-		 */
-		if (z->resource.end - z->resource.start != 0xffff)
-			continue;
-
-		address = z->resource.start;
-		if (!request_mem_region(address, 256, "wd33c93"))
-			continue;
-
-#ifdef CHECK_WD33C93
-
-		/*
-		 * These darn GVP boards are a problem - it can be tough to tell
-		 * whether or not they include a SCSI controller. This is the
-		 * ultimate Yet-Another-GVP-Detection-Hack in that it actually
-		 * probes for a WD33c93 chip: If we find one, it's extremely
-		 * likely that this card supports SCSI, regardless of Product_
-		 * Code, Board_Size, etc.
-		 */
-
-		/* Get pointers to the presumed register locations and save contents */
-
-		sasr_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SASR);
-		scmd_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SCMD);
-		save_sasr = *sasr_3393;
-
-		/* First test the AuxStatus Reg */
-
-		q = *sasr_3393;	/* read it */
-		if (q & 0x08)	/* bit 3 should always be clear */
-			goto release;
-		*sasr_3393 = WD_AUXILIARY_STATUS;	/* setup indirect address */
-		if (*sasr_3393 == WD_AUXILIARY_STATUS) {	/* shouldn't retain the write */
-			*sasr_3393 = save_sasr;	/* Oops - restore this byte */
-			goto release;
-		}
-		if (*sasr_3393 != q) {	/* should still read the same */
-			*sasr_3393 = save_sasr;	/* Oops - restore this byte */
-			goto release;
-		}
-		if (*scmd_3393 != q)	/* and so should the image at 0x1f */
-			goto release;
-
-		/*
-		 * Ok, we probably have a wd33c93, but let's check a few other places
-		 * for good measure. Make sure that this works for both 'A and 'B
-		 * chip versions.
-		 */
-
-		*sasr_3393 = WD_SCSI_STATUS;
-		q = *scmd_3393;
-		*sasr_3393 = WD_SCSI_STATUS;
-		*scmd_3393 = ~q;
-		*sasr_3393 = WD_SCSI_STATUS;
-		qq = *scmd_3393;
-		*sasr_3393 = WD_SCSI_STATUS;
-		*scmd_3393 = q;
-		if (qq != q)	/* should be read only */
-			goto release;
-		*sasr_3393 = 0x1e;	/* this register is unimplemented */
-		q = *scmd_3393;
-		*sasr_3393 = 0x1e;
-		*scmd_3393 = ~q;
-		*sasr_3393 = 0x1e;
-		qq = *scmd_3393;
-		*sasr_3393 = 0x1e;
-		*scmd_3393 = q;
-		if (qq != q || qq != 0xff)	/* should be read only, all 1's */
-			goto release;
-		*sasr_3393 = WD_TIMEOUT_PERIOD;
-		q = *scmd_3393;
-		*sasr_3393 = WD_TIMEOUT_PERIOD;
-		*scmd_3393 = ~q;
-		*sasr_3393 = WD_TIMEOUT_PERIOD;
-		qq = *scmd_3393;
-		*sasr_3393 = WD_TIMEOUT_PERIOD;
-		*scmd_3393 = q;
-		if (qq != (~q & 0xff))	/* should be read/write */
-			goto release;
-#endif
-
-		instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
-		if (instance == NULL)
-			goto release;
-		instance->base = ZTWO_VADDR(address);
-		instance->irq = IRQ_AMIGA_PORTS;
-		instance->unique_id = z->slotaddr;
-
-		hdata = shost_priv(instance);
-		if (gvp11_xfer_mask)
-			hdata->dma_xfer_mask = gvp11_xfer_mask;
-		else
-			hdata->dma_xfer_mask = default_dma_xfer_mask;
-
-		DMA(instance)->secret2 = 1;
-		DMA(instance)->secret1 = 0;
-		DMA(instance)->secret3 = 15;
-		while (DMA(instance)->CNTR & GVP11_DMAC_BUSY)
-			;
-		DMA(instance)->CNTR = 0;
-
-		DMA(instance)->BANK = 0;
-
-		epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000);
-
-		/*
-		 * Check for 14MHz SCSI clock
-		 */
-		regs.SASR = &(DMA(instance)->SASR);
-		regs.SCMD = &(DMA(instance)->SCMD);
-		hdata->no_sync = 0xff;
-		hdata->fast = 0;
-		hdata->dma_mode = CTRL_DMA;
-		wd33c93_init(instance, regs, dma_setup, dma_stop,
-			     (epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10
-						     : WD33C93_FS_12_15);
-
-		if (request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED,
-				"GVP11 SCSI", instance))
-			goto unregister;
-		DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
-		num_gvp11++;
-		continue;
-
-unregister:
-		scsi_unregister(instance);
-release:
-		release_mem_region(address, 256);
-	}
-
-	return num_gvp11;
-}
-
 static int gvp11_bus_reset(struct scsi_cmnd *cmd)
 {
+	struct Scsi_Host *instance = cmd->device->host;
+
 	/* FIXME perform bus-specific reset */
 
 	/* FIXME 2: shouldn't we no-op this function (return
 	   FAILED), and fall back to host reset function,
 	   wd33c93_host_reset ? */
 
-	spin_lock_irq(cmd->device->host->host_lock);
+	spin_lock_irq(instance->host_lock);
 	wd33c93_host_reset(cmd);
-	spin_unlock_irq(cmd->device->host->host_lock);
+	spin_unlock_irq(instance->host_lock);
 
 	return SUCCESS;
 }
 
-
-#define HOSTS_C
-
-#include "gvp11.h"
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "GVP11",
+static struct scsi_host_template gvp11_scsi_template = {
+	.module			= THIS_MODULE,
 	.name			= "GVP Series II SCSI",
-	.detect			= gvp11_detect,
-	.release		= gvp11_release,
+	.proc_info		= wd33c93_proc_info,
+	.proc_name		= "GVP11",
 	.queuecommand		= wd33c93_queuecommand,
 	.eh_abort_handler	= wd33c93_abort,
 	.eh_bus_reset_handler	= gvp11_bus_reset,
@@ -385,17 +203,230 @@
 	.use_clustering		= DISABLE_CLUSTERING
 };
 
-
-#include "scsi_module.c"
-
-int gvp11_release(struct Scsi_Host *instance)
+static int __devinit check_wd33c93(struct gvp11_scsiregs *regs)
 {
-#ifdef MODULE
-	DMA(instance)->CNTR = 0;
-	release_mem_region(ZTWO_PADDR(instance->base), 256);
-	free_irq(IRQ_AMIGA_PORTS, instance);
-#endif
-	return 1;
+#ifdef CHECK_WD33C93
+	volatile unsigned char *sasr_3393, *scmd_3393;
+	unsigned char save_sasr;
+	unsigned char q, qq;
+
+	/*
+	 * These darn GVP boards are a problem - it can be tough to tell
+	 * whether or not they include a SCSI controller. This is the
+	 * ultimate Yet-Another-GVP-Detection-Hack in that it actually
+	 * probes for a WD33c93 chip: If we find one, it's extremely
+	 * likely that this card supports SCSI, regardless of Product_
+	 * Code, Board_Size, etc.
+	 */
+
+	/* Get pointers to the presumed register locations and save contents */
+
+	sasr_3393 = &regs->SASR;
+	scmd_3393 = &regs->SCMD;
+	save_sasr = *sasr_3393;
+
+	/* First test the AuxStatus Reg */
+
+	q = *sasr_3393;	/* read it */
+	if (q & 0x08)	/* bit 3 should always be clear */
+		return -ENODEV;
+	*sasr_3393 = WD_AUXILIARY_STATUS;	/* setup indirect address */
+	if (*sasr_3393 == WD_AUXILIARY_STATUS) {	/* shouldn't retain the write */
+		*sasr_3393 = save_sasr;	/* Oops - restore this byte */
+		return -ENODEV;
+	}
+	if (*sasr_3393 != q) {	/* should still read the same */
+		*sasr_3393 = save_sasr;	/* Oops - restore this byte */
+		return -ENODEV;
+	}
+	if (*scmd_3393 != q)	/* and so should the image at 0x1f */
+		return -ENODEV;
+
+	/*
+	 * Ok, we probably have a wd33c93, but let's check a few other places
+	 * for good measure. Make sure that this works for both 'A and 'B
+	 * chip versions.
+	 */
+
+	*sasr_3393 = WD_SCSI_STATUS;
+	q = *scmd_3393;
+	*sasr_3393 = WD_SCSI_STATUS;
+	*scmd_3393 = ~q;
+	*sasr_3393 = WD_SCSI_STATUS;
+	qq = *scmd_3393;
+	*sasr_3393 = WD_SCSI_STATUS;
+	*scmd_3393 = q;
+	if (qq != q)	/* should be read only */
+		return -ENODEV;
+	*sasr_3393 = 0x1e;	/* this register is unimplemented */
+	q = *scmd_3393;
+	*sasr_3393 = 0x1e;
+	*scmd_3393 = ~q;
+	*sasr_3393 = 0x1e;
+	qq = *scmd_3393;
+	*sasr_3393 = 0x1e;
+	*scmd_3393 = q;
+	if (qq != q || qq != 0xff)	/* should be read only, all 1's */
+		return -ENODEV;
+	*sasr_3393 = WD_TIMEOUT_PERIOD;
+	q = *scmd_3393;
+	*sasr_3393 = WD_TIMEOUT_PERIOD;
+	*scmd_3393 = ~q;
+	*sasr_3393 = WD_TIMEOUT_PERIOD;
+	qq = *scmd_3393;
+	*sasr_3393 = WD_TIMEOUT_PERIOD;
+	*scmd_3393 = q;
+	if (qq != (~q & 0xff))	/* should be read/write */
+		return -ENODEV;
+#endif /* CHECK_WD33C93 */
+
+	return 0;
 }
 
+static int __devinit gvp11_probe(struct zorro_dev *z,
+				 const struct zorro_device_id *ent)
+{
+	struct Scsi_Host *instance;
+	unsigned long address;
+	int error;
+	unsigned int epc;
+	unsigned int default_dma_xfer_mask;
+	struct gvp11_hostdata *hdata;
+	struct gvp11_scsiregs *regs;
+	wd33c93_regs wdregs;
+
+	default_dma_xfer_mask = ent->driver_data;
+
+	/*
+	 * Rumors state that some GVP ram boards use the same product
+	 * code as the SCSI controllers. Therefore if the board-size
+	 * is not 64KB we asume it is a ram board and bail out.
+	 */
+	if (zorro_resource_len(z) != 0x10000)
+		return -ENODEV;
+
+	address = z->resource.start;
+	if (!request_mem_region(address, 256, "wd33c93"))
+		return -EBUSY;
+
+	regs = (struct gvp11_scsiregs *)(ZTWO_VADDR(address));
+
+	error = check_wd33c93(regs);
+	if (error)
+		goto fail_check_or_alloc;
+
+	instance = scsi_host_alloc(&gvp11_scsi_template,
+				   sizeof(struct gvp11_hostdata));
+	if (!instance) {
+		error = -ENOMEM;
+		goto fail_check_or_alloc;
+	}
+
+	instance->irq = IRQ_AMIGA_PORTS;
+	instance->unique_id = z->slotaddr;
+
+	regs->secret2 = 1;
+	regs->secret1 = 0;
+	regs->secret3 = 15;
+	while (regs->CNTR & GVP11_DMAC_BUSY)
+		;
+	regs->CNTR = 0;
+	regs->BANK = 0;
+
+	wdregs.SASR = &regs->SASR;
+	wdregs.SCMD = &regs->SCMD;
+
+	hdata = shost_priv(instance);
+	if (gvp11_xfer_mask)
+		hdata->wh.dma_xfer_mask = gvp11_xfer_mask;
+	else
+		hdata->wh.dma_xfer_mask = default_dma_xfer_mask;
+
+	hdata->wh.no_sync = 0xff;
+	hdata->wh.fast = 0;
+	hdata->wh.dma_mode = CTRL_DMA;
+	hdata->regs = regs;
+
+	/*
+	 * Check for 14MHz SCSI clock
+	 */
+	epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000);
+	wd33c93_init(instance, wdregs, dma_setup, dma_stop,
+		     (epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10
+					     : WD33C93_FS_12_15);
+
+	error = request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED,
+			    "GVP11 SCSI", instance);
+	if (error)
+		goto fail_irq;
+
+	regs->CNTR = GVP11_DMAC_INT_ENABLE;
+
+	error = scsi_add_host(instance, NULL);
+	if (error)
+		goto fail_host;
+
+	zorro_set_drvdata(z, instance);
+	scsi_scan_host(instance);
+	return 0;
+
+fail_host:
+	free_irq(IRQ_AMIGA_PORTS, instance);
+fail_irq:
+	scsi_host_put(instance);
+fail_check_or_alloc:
+	release_mem_region(address, 256);
+	return error;
+}
+
+static void __devexit gvp11_remove(struct zorro_dev *z)
+{
+	struct Scsi_Host *instance = zorro_get_drvdata(z);
+	struct gvp11_hostdata *hdata = shost_priv(instance);
+
+	hdata->regs->CNTR = 0;
+	scsi_remove_host(instance);
+	free_irq(IRQ_AMIGA_PORTS, instance);
+	scsi_host_put(instance);
+	release_mem_region(z->resource.start, 256);
+}
+
+	/*
+	 * This should (hopefully) be the correct way to identify
+	 * all the different GVP SCSI controllers (except for the
+	 * SERIES I though).
+	 */
+
+static struct zorro_device_id gvp11_zorro_tbl[] __devinitdata = {
+	{ ZORRO_PROD_GVP_COMBO_030_R3_SCSI,	~0x00ffffff },
+	{ ZORRO_PROD_GVP_SERIES_II,		~0x00ffffff },
+	{ ZORRO_PROD_GVP_GFORCE_030_SCSI,	~0x01ffffff },
+	{ ZORRO_PROD_GVP_A530_SCSI,		~0x01ffffff },
+	{ ZORRO_PROD_GVP_COMBO_030_R4_SCSI,	~0x01ffffff },
+	{ ZORRO_PROD_GVP_A1291,			~0x07ffffff },
+	{ ZORRO_PROD_GVP_GFORCE_040_SCSI_1,	~0x07ffffff },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(zorro, gvp11_zorro_tbl);
+
+static struct zorro_driver gvp11_driver = {
+	.name		= "gvp11",
+	.id_table	= gvp11_zorro_tbl,
+	.probe		= gvp11_probe,
+	.remove		= __devexit_p(gvp11_remove),
+};
+
+static int __init gvp11_init(void)
+{
+	return zorro_register_driver(&gvp11_driver);
+}
+module_init(gvp11_init);
+
+static void __exit gvp11_exit(void)
+{
+	zorro_unregister_driver(&gvp11_driver);
+}
+module_exit(gvp11_exit);
+
+MODULE_DESCRIPTION("GVP Series II SCSI");
 MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/gvp11.h b/drivers/scsi/gvp11.h
index e2efdf9..852913c 100644
--- a/drivers/scsi/gvp11.h
+++ b/drivers/scsi/gvp11.h
@@ -11,9 +11,6 @@
 
 #include <linux/types.h>
 
-int gvp11_detect(struct scsi_host_template *);
-int gvp11_release(struct Scsi_Host *);
-
 #ifndef CMD_PER_LUN
 #define CMD_PER_LUN		2
 #endif
@@ -22,15 +19,13 @@
 #define CAN_QUEUE		16
 #endif
 
-#ifndef HOSTS_C
-
 /*
  * if the transfer address ANDed with this results in a non-zero
  * result, then we can't use DMA.
  */
 #define GVP11_XFER_MASK		(0xff000001)
 
-typedef struct {
+struct gvp11_scsiregs {
 		 unsigned char	pad1[64];
 	volatile unsigned short	CNTR;
 		 unsigned char	pad2[31];
@@ -46,7 +41,7 @@
 	volatile unsigned short	SP_DMA;
 	volatile unsigned short	secret2; /* store 1 here */
 	volatile unsigned short	secret3; /* store 15 here */
-} gvp11_scsiregs;
+};
 
 /* bits in CNTR */
 #define GVP11_DMAC_BUSY		(1<<0)
@@ -54,6 +49,4 @@
 #define GVP11_DMAC_INT_ENABLE	(1<<3)
 #define GVP11_DMAC_DIR_WRITE	(1<<4)
 
-#endif /* else def HOSTS_C */
-
 #endif /* GVP11_H */
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 6a6661c..82ea4a8 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -567,7 +567,8 @@
 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 {
 	struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-	struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
+	struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
+	struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 	dma_addr_t dma_addr = ipr_cmd->dma_addr;
 
 	memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
@@ -576,19 +577,19 @@
 	ioarcb->ioadl_len = 0;
 	ioarcb->read_ioadl_len = 0;
 
-	if (ipr_cmd->ioa_cfg->sis64)
+	if (ipr_cmd->ioa_cfg->sis64) {
 		ioarcb->u.sis64_addr_data.data_ioadl_addr =
 			cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
-	else {
+		ioasa64->u.gata.status = 0;
+	} else {
 		ioarcb->write_ioadl_addr =
 			cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 		ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
+		ioasa->u.gata.status = 0;
 	}
 
-	ioasa->ioasc = 0;
-	ioasa->residual_data_len = 0;
-	ioasa->u.gata.status = 0;
-
+	ioasa->hdr.ioasc = 0;
+	ioasa->hdr.residual_data_len = 0;
 	ipr_cmd->scsi_cmd = NULL;
 	ipr_cmd->qc = NULL;
 	ipr_cmd->sense_buffer[0] = 0;
@@ -768,8 +769,8 @@
 	list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
 		list_del(&ipr_cmd->queue);
 
-		ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
-		ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
+		ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
+		ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
 
 		if (ipr_cmd->scsi_cmd)
 			ipr_cmd->done = ipr_scsi_eh_done;
@@ -1040,7 +1041,7 @@
 		proto = cfgtew->u.cfgte64->proto;
 		res->res_flags = cfgtew->u.cfgte64->res_flags;
 		res->qmodel = IPR_QUEUEING_MODEL64(res);
-		res->type = cfgtew->u.cfgte64->res_type & 0x0f;
+		res->type = cfgtew->u.cfgte64->res_type;
 
 		memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
 			sizeof(res->res_path));
@@ -1319,7 +1320,7 @@
 {
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 	struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	list_del(&hostrcb->queue);
 	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
@@ -2354,7 +2355,7 @@
 {
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 	struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 	u32 fd_ioasc;
 
 	if (ioa_cfg->sis64)
@@ -4509,11 +4510,16 @@
 	}
 
 	ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
-	ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
-	if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
-		memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
-		       sizeof(struct ipr_ioasa_gata));
+	if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
+		if (ipr_cmd->ioa_cfg->sis64)
+			memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
+			       sizeof(struct ipr_ioasa_gata));
+		else
+			memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
+			       sizeof(struct ipr_ioasa_gata));
+	}
 
 	LEAVE;
 	return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
@@ -4768,7 +4774,7 @@
 	scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
 		    scsi_cmd->cmnd[0]);
 	ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
-	ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	/*
 	 * If the abort task timed out and we sent a bus reset, we will get
@@ -4812,15 +4818,39 @@
 /**
  * ipr_handle_other_interrupt - Handle "other" interrupts
  * @ioa_cfg:	ioa config struct
- * @int_reg:	interrupt register
  *
  * Return value:
  * 	IRQ_NONE / IRQ_HANDLED
  **/
-static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
-					      volatile u32 int_reg)
+static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg)
 {
 	irqreturn_t rc = IRQ_HANDLED;
+	volatile u32 int_reg, int_mask_reg;
+
+	int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
+	int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
+
+	/* If an interrupt on the adapter did not occur, ignore it.
+	 * Or in the case of SIS 64, check for a stage change interrupt.
+	 */
+	if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
+		if (ioa_cfg->sis64) {
+			int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
+			int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
+			if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
+
+				/* clear stage change */
+				writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
+				int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
+				list_del(&ioa_cfg->reset_cmd->queue);
+				del_timer(&ioa_cfg->reset_cmd->timer);
+				ipr_reset_ioa_job(ioa_cfg->reset_cmd);
+				return IRQ_HANDLED;
+			}
+		}
+
+		return IRQ_NONE;
+	}
 
 	if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
 		/* Mask the interrupt */
@@ -4881,7 +4911,7 @@
 {
 	struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
 	unsigned long lock_flags = 0;
-	volatile u32 int_reg, int_mask_reg;
+	volatile u32 int_reg;
 	u32 ioasc;
 	u16 cmd_index;
 	int num_hrrq = 0;
@@ -4896,33 +4926,6 @@
 		return IRQ_NONE;
 	}
 
-	int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
-	int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
-
-	/* If an interrupt on the adapter did not occur, ignore it.
-	 * Or in the case of SIS 64, check for a stage change interrupt.
-	 */
-	if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
-		if (ioa_cfg->sis64) {
-			int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
-			int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
-			if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
-
-				/* clear stage change */
-				writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
-				int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
-				list_del(&ioa_cfg->reset_cmd->queue);
-				del_timer(&ioa_cfg->reset_cmd->timer);
-				ipr_reset_ioa_job(ioa_cfg->reset_cmd);
-				spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
-				return IRQ_HANDLED;
-			}
-		}
-
-		spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
-		return IRQ_NONE;
-	}
-
 	while (1) {
 		ipr_cmd = NULL;
 
@@ -4940,7 +4943,7 @@
 
 			ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
 
-			ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+			ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 			ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
 
@@ -4962,7 +4965,7 @@
 			/* Clear the PCI interrupt */
 			do {
 				writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
-				int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
+				int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
 			} while (int_reg & IPR_PCII_HRRQ_UPDATED &&
 					num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
 
@@ -4977,7 +4980,7 @@
 	}
 
 	if (unlikely(rc == IRQ_NONE))
-		rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
+		rc = ipr_handle_other_interrupt(ioa_cfg);
 
 	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 	return rc;
@@ -5014,6 +5017,10 @@
 
 	ipr_cmd->dma_use_sg = nseg;
 
+	ioarcb->data_transfer_length = cpu_to_be32(length);
+	ioarcb->ioadl_len =
+		cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
+
 	if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
 		ioadl_flags = IPR_IOADL_FLAGS_WRITE;
 		ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
@@ -5135,7 +5142,7 @@
 	struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 	struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
 		scsi_cmd->result |= (DID_ERROR << 16);
@@ -5166,7 +5173,7 @@
 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
 {
 	struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
-	struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
+	struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 	dma_addr_t dma_addr = ipr_cmd->dma_addr;
 
 	memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
@@ -5174,8 +5181,8 @@
 	ioarcb->read_data_transfer_length = 0;
 	ioarcb->ioadl_len = 0;
 	ioarcb->read_ioadl_len = 0;
-	ioasa->ioasc = 0;
-	ioasa->residual_data_len = 0;
+	ioasa->hdr.ioasc = 0;
+	ioasa->hdr.residual_data_len = 0;
 
 	if (ipr_cmd->ioa_cfg->sis64)
 		ioarcb->u.sis64_addr_data.data_ioadl_addr =
@@ -5200,7 +5207,7 @@
 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
 {
 	struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
 		ipr_erp_done(ipr_cmd);
@@ -5277,12 +5284,12 @@
 	int i;
 	u16 data_len;
 	u32 ioasc, fd_ioasc;
-	struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
+	struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 	__be32 *ioasa_data = (__be32 *)ioasa;
 	int error_index;
 
-	ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
-	fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
+	ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
+	fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
 
 	if (0 == ioasc)
 		return;
@@ -5297,7 +5304,7 @@
 
 	if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
 		/* Don't log an error if the IOA already logged one */
-		if (ioasa->ilid != 0)
+		if (ioasa->hdr.ilid != 0)
 			return;
 
 		if (!ipr_is_gscsi(res))
@@ -5309,10 +5316,11 @@
 
 	ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
 
-	if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
+	data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
+	if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
+		data_len = sizeof(struct ipr_ioasa64);
+	else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
 		data_len = sizeof(struct ipr_ioasa);
-	else
-		data_len = be16_to_cpu(ioasa->ret_stat_len);
 
 	ipr_err("IOASA Dump:\n");
 
@@ -5338,8 +5346,8 @@
 	u32 failing_lba;
 	u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
 	struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
-	struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
-	u32 ioasc = be32_to_cpu(ioasa->ioasc);
+	struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
+	u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
 
 	memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
 
@@ -5382,7 +5390,7 @@
 
 		/* Illegal request */
 		if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
-		    (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
+		    (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
 			sense_buf[7] = 10;	/* additional length */
 
 			/* IOARCB was in error */
@@ -5393,10 +5401,10 @@
 
 			sense_buf[16] =
 			    ((IPR_FIELD_POINTER_MASK &
-			      be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
+			      be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
 			sense_buf[17] =
 			    (IPR_FIELD_POINTER_MASK &
-			     be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
+			     be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
 		} else {
 			if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
 				if (ipr_is_vset_device(res))
@@ -5428,14 +5436,20 @@
  **/
 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
 {
-	struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
+	struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
+	struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 
-	if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
+	if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
 		return 0;
 
-	memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
-	       min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
-		   SCSI_SENSE_BUFFERSIZE));
+	if (ipr_cmd->ioa_cfg->sis64)
+		memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
+		       min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
+			   SCSI_SENSE_BUFFERSIZE));
+	else
+		memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
+		       min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
+			   SCSI_SENSE_BUFFERSIZE));
 	return 1;
 }
 
@@ -5455,7 +5469,7 @@
 {
 	struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 	struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 	u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
 
 	if (!res) {
@@ -5547,9 +5561,9 @@
 {
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 	struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
-	scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
+	scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
 
 	if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
 		scsi_dma_unmap(ipr_cmd->scsi_cmd);
@@ -5839,19 +5853,23 @@
 	struct ata_queued_cmd *qc = ipr_cmd->qc;
 	struct ipr_sata_port *sata_port = qc->ap->private_data;
 	struct ipr_resource_entry *res = sata_port->res;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
-	memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
-	       sizeof(struct ipr_ioasa_gata));
+	if (ipr_cmd->ioa_cfg->sis64)
+		memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
+		       sizeof(struct ipr_ioasa_gata));
+	else
+		memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
+		       sizeof(struct ipr_ioasa_gata));
 	ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
 
-	if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
+	if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
 		scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
 
 	if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
-		qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
+		qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
 	else
-		qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
+		qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
 	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
 	ata_qc_complete(qc);
 }
@@ -6520,7 +6538,7 @@
 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
 {
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	dev_err(&ioa_cfg->pdev->dev,
 		"0x%02X failed with IOASC: 0x%08X\n",
@@ -6544,7 +6562,7 @@
 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
 {
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
 		ipr_cmd->job_step = ipr_set_supported_devs;
@@ -6634,7 +6652,7 @@
  **/
 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
 {
-	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+	u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 	if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
 		ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
@@ -6706,7 +6724,7 @@
 		list_move_tail(&res->queue, &old_res);
 
 	if (ioa_cfg->sis64)
-		entries = ioa_cfg->u.cfg_table64->hdr64.num_entries;
+		entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
 	else
 		entries = ioa_cfg->u.cfg_table->hdr.num_entries;
 
@@ -6792,6 +6810,7 @@
 	ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
 
 	ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
+	ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
 	ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
 	ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
 
@@ -7122,7 +7141,9 @@
 	ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
 
 	/* sanity check the stage_time value */
-	if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
+	if (stage_time == 0)
+		stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
+	else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
 		stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
 	else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
 		stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
@@ -7165,13 +7186,14 @@
 {
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 	volatile u32 int_reg;
+	volatile u64 maskval;
 
 	ENTER;
 	ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
 	ipr_init_ioa_mem(ioa_cfg);
 
 	ioa_cfg->allow_interrupts = 1;
-	int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
+	int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
 
 	if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
 		writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
@@ -7183,9 +7205,12 @@
 	/* Enable destructive diagnostics on IOA */
 	writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
 
-	writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
-	if (ioa_cfg->sis64)
-		writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_mask_reg);
+	if (ioa_cfg->sis64) {
+		maskval = IPR_PCII_IPL_STAGE_CHANGE;
+		maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
+		writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
+	} else
+		writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
 
 	int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
 
@@ -7332,12 +7357,12 @@
 	rc = pci_restore_state(ioa_cfg->pdev);
 
 	if (rc != PCIBIOS_SUCCESSFUL) {
-		ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
+		ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
 		return IPR_RC_JOB_CONTINUE;
 	}
 
 	if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
-		ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
+		ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
 		return IPR_RC_JOB_CONTINUE;
 	}
 
@@ -7364,7 +7389,7 @@
 		}
 	}
 
-	ENTER;
+	LEAVE;
 	return IPR_RC_JOB_CONTINUE;
 }
 
@@ -7406,7 +7431,7 @@
 
 	if (rc != PCIBIOS_SUCCESSFUL) {
 		pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
-		ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
+		ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
 		rc = IPR_RC_JOB_CONTINUE;
 	} else {
 		ipr_cmd->job_step = ipr_reset_bist_done;
@@ -7665,7 +7690,7 @@
 	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 
 	do {
-		ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+		ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
 
 		if (ioa_cfg->reset_cmd != ipr_cmd) {
 			/*
@@ -8048,13 +8073,13 @@
 			ioarcb->u.sis64_addr_data.data_ioadl_addr =
 				cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
 			ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
-				cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, ioasa));
+				cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
 		} else {
 			ioarcb->write_ioadl_addr =
 				cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 			ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
 			ioarcb->ioasa_host_pci_addr =
-				cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
+				cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
 		}
 		ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
 		ipr_cmd->cmd_index = i;
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 4c267b5..9ecd225 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -244,6 +244,7 @@
 #define IPR_RUNTIME_RESET				0x40000000
 
 #define IPR_IPL_INIT_MIN_STAGE_TIME			5
+#define IPR_IPL_INIT_DEFAULT_STAGE_TIME                 15
 #define IPR_IPL_INIT_STAGE_UNKNOWN			0x0
 #define IPR_IPL_INIT_STAGE_TRANSOP			0xB0000000
 #define IPR_IPL_INIT_STAGE_MASK				0xff000000
@@ -613,7 +614,7 @@
 	__be32 data[SCSI_SENSE_BUFFERSIZE/sizeof(__be32)];
 };
 
-struct ipr_ioasa {
+struct ipr_ioasa_hdr {
 	__be32 ioasc;
 #define IPR_IOASC_SENSE_KEY(ioasc) ((ioasc) >> 24)
 #define IPR_IOASC_SENSE_CODE(ioasc) (((ioasc) & 0x00ff0000) >> 16)
@@ -645,6 +646,25 @@
 #define IPR_FIELD_POINTER_VALID		(0x80000000 >> 8)
 #define IPR_FIELD_POINTER_MASK		0x0000ffff
 
+}__attribute__((packed, aligned (4)));
+
+struct ipr_ioasa {
+	struct ipr_ioasa_hdr hdr;
+
+	union {
+		struct ipr_ioasa_vset vset;
+		struct ipr_ioasa_af_dasd dasd;
+		struct ipr_ioasa_gpdd gpdd;
+		struct ipr_ioasa_gata gata;
+	} u;
+
+	struct ipr_auto_sense auto_sense;
+}__attribute__((packed, aligned (4)));
+
+struct ipr_ioasa64 {
+	struct ipr_ioasa_hdr hdr;
+	u8 fd_res_path[8];
+
 	union {
 		struct ipr_ioasa_vset vset;
 		struct ipr_ioasa_af_dasd dasd;
@@ -804,7 +824,7 @@
 }__attribute__((packed, aligned (4)));
 
 struct ipr_hostrcb_type_ff_error {
-	__be32 ioa_data[502];
+	__be32 ioa_data[758];
 }__attribute__((packed, aligned (4)));
 
 struct ipr_hostrcb_type_01_error {
@@ -1181,7 +1201,7 @@
 	u8 flags;
 	__be16 res_flags;
 
-	__be32 type;
+	u8 type;
 
 	u8 qmodel;
 	struct ipr_std_inq_data std_inq_data;
@@ -1464,7 +1484,10 @@
 		struct ipr_ioadl64_desc ioadl64[IPR_NUM_IOADL_ENTRIES];
 		struct ipr_ata64_ioadl ata_ioadl;
 	} i;
-	struct ipr_ioasa ioasa;
+	union {
+		struct ipr_ioasa ioasa;
+		struct ipr_ioasa64 ioasa64;
+	} s;
 	struct list_head queue;
 	struct scsi_cmnd *scsi_cmd;
 	struct ata_queued_cmd *qc;
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index bf55d30..fec47de 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -601,10 +601,8 @@
 	set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
 	write_unlock_bh(&tcp_sw_conn->sock->sk->sk_callback_lock);
 
-	if (sk_sleep(sock->sk)) {
-		sock->sk->sk_err = EIO;
-		wake_up_interruptible(sk_sleep(sock->sk));
-	}
+	sock->sk->sk_err = EIO;
+	wake_up_interruptible(sk_sleep(sock->sk));
 
 	iscsi_conn_stop(cls_conn, flag);
 	iscsi_sw_tcp_release_conn(conn);
diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c
index 716d178..c29d0db 100644
--- a/drivers/scsi/mvme147.c
+++ b/drivers/scsi/mvme147.c
@@ -16,12 +16,12 @@
 #include <linux/stat.h>
 
 
-static struct Scsi_Host *mvme147_host = NULL;
-
-static irqreturn_t mvme147_intr(int irq, void *dummy)
+static irqreturn_t mvme147_intr(int irq, void *data)
 {
+	struct Scsi_Host *instance = data;
+
 	if (irq == MVME147_IRQ_SCSI_PORT)
-		wd33c93_intr(mvme147_host);
+		wd33c93_intr(instance);
 	else
 		m147_pcc->dma_intr = 0x89;	/* Ack and enable ints */
 	return IRQ_HANDLED;
@@ -29,7 +29,8 @@
 
 static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 {
-	struct WD33C93_hostdata *hdata = shost_priv(mvme147_host);
+	struct Scsi_Host *instance = cmd->device->host;
+	struct WD33C93_hostdata *hdata = shost_priv(instance);
 	unsigned char flags = 0x01;
 	unsigned long addr = virt_to_bus(cmd->SCp.ptr);
 
@@ -66,6 +67,7 @@
 int mvme147_detect(struct scsi_host_template *tpnt)
 {
 	static unsigned char called = 0;
+	struct Scsi_Host *instance;
 	wd33c93_regs regs;
 	struct WD33C93_hostdata *hdata;
 
@@ -76,25 +78,25 @@
 	tpnt->proc_name = "MVME147";
 	tpnt->proc_info = &wd33c93_proc_info;
 
-	mvme147_host = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
-	if (!mvme147_host)
+	instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
+	if (!instance)
 		goto err_out;
 
-	mvme147_host->base = 0xfffe4000;
-	mvme147_host->irq = MVME147_IRQ_SCSI_PORT;
+	instance->base = 0xfffe4000;
+	instance->irq = MVME147_IRQ_SCSI_PORT;
 	regs.SASR = (volatile unsigned char *)0xfffe4000;
 	regs.SCMD = (volatile unsigned char *)0xfffe4001;
-	hdata = shost_priv(mvme147_host);
+	hdata = shost_priv(instance);
 	hdata->no_sync = 0xff;
 	hdata->fast = 0;
 	hdata->dma_mode = CTRL_DMA;
-	wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
+	wd33c93_init(instance, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
 
 	if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0,
-			"MVME147 SCSI PORT", mvme147_intr))
+			"MVME147 SCSI PORT", instance))
 		goto err_unregister;
 	if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0,
-			"MVME147 SCSI DMA", mvme147_intr))
+			"MVME147 SCSI DMA", instance))
 		goto err_free_irq;
 #if 0	/* Disabled; causes problems booting */
 	m147_pcc->scsi_interrupt = 0x10;	/* Assert SCSI bus reset */
@@ -113,7 +115,7 @@
 err_free_irq:
 	free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
 err_unregister:
-	scsi_unregister(mvme147_host);
+	scsi_unregister(instance);
 err_out:
 	return 0;
 }
@@ -132,9 +134,6 @@
 	return SUCCESS;
 }
 
-#define HOSTS_C
-
-#include "mvme147.h"
 
 static struct scsi_host_template driver_template = {
 	.proc_name		= "MVME147",
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index 8dbf1c3..d64b717 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -3587,7 +3587,7 @@
 		if (i == (-ENOSPC)) {
 			transfer = STp->buffer->writing;	/* FIXME -- check this logic */
 			if (transfer <= do_count) {
-				filp->f_pos += do_count - transfer;
+				*ppos += do_count - transfer;
 				count -= do_count - transfer;
 				if (STps->drv_block >= 0) {
 					STps->drv_block += (do_count - transfer) / STp->block_size;
@@ -3625,7 +3625,7 @@
 			goto out;
 		}
 
-		filp->f_pos += do_count;
+		*ppos += do_count;
 		b_point += do_count;
 		count -= do_count;
 		if (STps->drv_block >= 0) {
@@ -3647,7 +3647,7 @@
 		if (STps->drv_block >= 0) {
 			STps->drv_block += blks;
 		}
-		filp->f_pos += count;
+		*ppos += count;
 		count = 0;
 	}
 
@@ -3823,7 +3823,7 @@
 			}
 			STp->logical_blk_num += transfer / STp->block_size;
 			STps->drv_block      += transfer / STp->block_size;
-			filp->f_pos          += transfer;
+			*ppos          += transfer;
 			buf                  += transfer;
 			total                += transfer;
 		}
@@ -5626,6 +5626,7 @@
 	.open =         os_scsi_tape_open,
 	.flush =        os_scsi_tape_flush,
 	.release =      os_scsi_tape_close,
+	.llseek =	noop_llseek,
 };
 
 static int osst_supports(struct scsi_device * SDp)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 9798c2c..1c027a9 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -492,19 +492,20 @@
 	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
 	unsigned long flags;
 	enum scsi_target_state state;
-	int empty;
+	int empty = 0;
 
 	spin_lock_irqsave(shost->host_lock, flags);
 	state = starget->state;
-	empty = --starget->reap_ref == 0 &&
-		list_empty(&starget->devices) ? 1 : 0;
+	if (--starget->reap_ref == 0 && list_empty(&starget->devices)) {
+		empty = 1;
+		starget->state = STARGET_DEL;
+	}
 	spin_unlock_irqrestore(shost->host_lock, flags);
 
 	if (!empty)
 		return;
 
 	BUG_ON(state == STARGET_DEL);
-	starget->state = STARGET_DEL;
 	if (state == STARGET_CREATED)
 		scsi_target_destroy(starget);
 	else
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 3ea1a71..24211d0 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -3962,6 +3962,7 @@
 	.open =		st_open,
 	.flush =	st_flush,
 	.release =	st_release,
+	.llseek =	noop_llseek,
 };
 
 static int st_probe(struct device *dev)
diff --git a/drivers/serial/s5pv210.c b/drivers/serial/s5pv210.c
index 8dc0383..4a789e5 100644
--- a/drivers/serial/s5pv210.c
+++ b/drivers/serial/s5pv210.c
@@ -119,7 +119,7 @@
 	return s3c24xx_serial_probe(pdev, s5p_uart_inf[pdev->id]);
 }
 
-static struct platform_driver s5p_serial_drv = {
+static struct platform_driver s5p_serial_driver = {
 	.probe		= s5p_serial_probe,
 	.remove		= __devexit_p(s3c24xx_serial_remove),
 	.driver		= {
@@ -130,19 +130,19 @@
 
 static int __init s5pv210_serial_console_init(void)
 {
-	return s3c24xx_serial_initconsole(&s5p_serial_drv, s5p_uart_inf);
+	return s3c24xx_serial_initconsole(&s5p_serial_driver, s5p_uart_inf);
 }
 
 console_initcall(s5pv210_serial_console_init);
 
 static int __init s5p_serial_init(void)
 {
-	return s3c24xx_serial_init(&s5p_serial_drv, *s5p_uart_inf);
+	return s3c24xx_serial_init(&s5p_serial_driver, *s5p_uart_inf);
 }
 
 static void __exit s5p_serial_exit(void)
 {
-	platform_driver_unregister(&s5p_serial_drv);
+	platform_driver_unregister(&s5p_serial_driver);
 }
 
 module_init(s5p_serial_init);
diff --git a/drivers/sfi/sfi_acpi.c b/drivers/sfi/sfi_acpi.c
index 34aba30..f5b4ca5 100644
--- a/drivers/sfi/sfi_acpi.c
+++ b/drivers/sfi/sfi_acpi.c
@@ -173,3 +173,44 @@
 	sfi_acpi_put_table(table);
 	return ret;
 }
+
+static ssize_t sfi_acpi_table_show(struct file *filp, struct kobject *kobj,
+			       struct bin_attribute *bin_attr, char *buf,
+			       loff_t offset, size_t count)
+{
+	struct sfi_table_attr *tbl_attr =
+	    container_of(bin_attr, struct sfi_table_attr, attr);
+	struct acpi_table_header *th = NULL;
+	struct sfi_table_key key;
+	ssize_t cnt;
+
+	key.sig = tbl_attr->name;
+	key.oem_id = NULL;
+	key.oem_table_id = NULL;
+
+	th = sfi_acpi_get_table(&key);
+	if (!th)
+		return 0;
+
+	cnt =  memory_read_from_buffer(buf, count, &offset,
+					th, th->length);
+	sfi_acpi_put_table(th);
+
+	return cnt;
+}
+
+
+void __init sfi_acpi_sysfs_init(void)
+{
+	u32 tbl_cnt, i;
+	struct sfi_table_attr *tbl_attr;
+
+	tbl_cnt = XSDT_GET_NUM_ENTRIES(xsdt_va, u64);
+	for (i = 0; i < tbl_cnt; i++) {
+		tbl_attr =
+			sfi_sysfs_install_table(xsdt_va->table_offset_entry[i]);
+		tbl_attr->attr.read = sfi_acpi_table_show;
+	}
+
+	return;
+}
diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c
index b204a09..0051959 100644
--- a/drivers/sfi/sfi_core.c
+++ b/drivers/sfi/sfi_core.c
@@ -67,6 +67,7 @@
 #include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/sfi.h>
+#include <linux/slab.h>
 
 #include "sfi_core.h"
 
@@ -382,6 +383,102 @@
 	return -1;
 }
 
+static struct kobject *sfi_kobj;
+static struct kobject *tables_kobj;
+
+static ssize_t sfi_table_show(struct file *filp, struct kobject *kobj,
+			       struct bin_attribute *bin_attr, char *buf,
+			       loff_t offset, size_t count)
+{
+	struct sfi_table_attr *tbl_attr =
+	    container_of(bin_attr, struct sfi_table_attr, attr);
+	struct sfi_table_header *th = NULL;
+	struct sfi_table_key key;
+	ssize_t cnt;
+
+	key.sig = tbl_attr->name;
+	key.oem_id = NULL;
+	key.oem_table_id = NULL;
+
+	if (strncmp(SFI_SIG_SYST, tbl_attr->name, SFI_SIGNATURE_SIZE)) {
+		th = sfi_get_table(&key);
+		if (!th)
+			return 0;
+
+		cnt =  memory_read_from_buffer(buf, count, &offset,
+						th, th->len);
+		sfi_put_table(th);
+	} else
+		cnt =  memory_read_from_buffer(buf, count, &offset,
+					syst_va, syst_va->header.len);
+
+	return cnt;
+}
+
+struct sfi_table_attr __init *sfi_sysfs_install_table(u64 pa)
+{
+	struct sfi_table_attr *tbl_attr;
+	struct sfi_table_header *th;
+	int ret;
+
+	tbl_attr = kzalloc(sizeof(struct sfi_table_attr), GFP_KERNEL);
+	if (!tbl_attr)
+		return NULL;
+
+	th = sfi_map_table(pa);
+	if (!th || !th->sig[0]) {
+		kfree(tbl_attr);
+		return NULL;
+	}
+
+	sysfs_attr_init(&tbl_attr->attr.attr);
+	memcpy(tbl_attr->name, th->sig, SFI_SIGNATURE_SIZE);
+
+	tbl_attr->attr.size = 0;
+	tbl_attr->attr.read = sfi_table_show;
+	tbl_attr->attr.attr.name = tbl_attr->name;
+	tbl_attr->attr.attr.mode = 0400;
+
+	ret = sysfs_create_bin_file(tables_kobj,
+				  &tbl_attr->attr);
+	if (ret)
+		kfree(tbl_attr);
+
+	sfi_unmap_table(th);
+	return tbl_attr;
+}
+
+static int __init sfi_sysfs_init(void)
+{
+	int tbl_cnt, i;
+
+	if (sfi_disabled)
+		return 0;
+
+	sfi_kobj = kobject_create_and_add("sfi", firmware_kobj);
+	if (!sfi_kobj)
+		return 0;
+
+	tables_kobj = kobject_create_and_add("tables", sfi_kobj);
+	if (!tables_kobj) {
+		kobject_put(sfi_kobj);
+		return 0;
+	}
+
+	sfi_sysfs_install_table(syst_pa);
+
+	tbl_cnt = SFI_GET_NUM_ENTRIES(syst_va, u64);
+
+	for (i = 0; i < tbl_cnt; i++)
+		sfi_sysfs_install_table(syst_va->pentry[i]);
+
+	sfi_acpi_sysfs_init();
+	kobject_uevent(sfi_kobj, KOBJ_ADD);
+	kobject_uevent(tables_kobj, KOBJ_ADD);
+	pr_info("SFI sysfs interfaces init success\n");
+	return 0;
+}
+
 void __init sfi_init(void)
 {
 	if (!acpi_disabled)
@@ -390,7 +487,7 @@
 	if (sfi_disabled)
 		return;
 
-	pr_info("Simple Firmware Interface v0.7 http://simplefirmware.org\n");
+	pr_info("Simple Firmware Interface v0.81 http://simplefirmware.org\n");
 
 	if (sfi_find_syst() || sfi_parse_syst() || sfi_platform_init())
 		disable_sfi();
@@ -414,3 +511,9 @@
 
 	sfi_acpi_init();
 }
+
+/*
+ * The reason we put it here becasue we need wait till the /sys/firmware
+ * is setup, then our interface can be registered in /sys/firmware/sfi
+ */
+core_initcall(sfi_sysfs_init);
diff --git a/drivers/sfi/sfi_core.h b/drivers/sfi/sfi_core.h
index da82d39..b7cf220 100644
--- a/drivers/sfi/sfi_core.h
+++ b/drivers/sfi/sfi_core.h
@@ -61,6 +61,12 @@
 	char	*oem_table_id;
 };
 
+/* sysfs interface */
+struct sfi_table_attr {
+	struct bin_attribute attr;
+	char name[8];
+};
+
 #define SFI_ANY_KEY { .sig = NULL, .oem_id = NULL, .oem_table_id = NULL }
 
 extern int __init sfi_acpi_init(void);
@@ -68,3 +74,5 @@
 					struct sfi_table_key *key);
 struct sfi_table_header *sfi_get_table(struct sfi_table_key *key);
 extern void sfi_put_table(struct sfi_table_header *table);
+extern struct sfi_table_attr __init *sfi_sysfs_install_table(u64 pa);
+extern void __init sfi_acpi_sysfs_init(void);
diff --git a/drivers/staging/go7007/saa7134-go7007.c b/drivers/staging/go7007/saa7134-go7007.c
index 49f0d31..cf7c34a 100644
--- a/drivers/staging/go7007/saa7134-go7007.c
+++ b/drivers/staging/go7007/saa7134-go7007.c
@@ -242,13 +242,13 @@
 		printk(KERN_DEBUG "saa7134-go7007: irq: lost %ld\n",
 				(status >> 16) & 0x0f);
 	if (status & 0x100000) {
-		dma_sync_single(&dev->pci->dev,
-				saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
+		dma_sync_single_for_cpu(&dev->pci->dev,
+					saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
 		go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
 		saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
 	} else {
-		dma_sync_single(&dev->pci->dev,
-				saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
+		dma_sync_single_for_cpu(&dev->pci->dev,
+					saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
 		go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
 		saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
 	}
diff --git a/drivers/staging/pohmelfs/inode.c b/drivers/staging/pohmelfs/inode.c
index 9286e86..643b413 100644
--- a/drivers/staging/pohmelfs/inode.c
+++ b/drivers/staging/pohmelfs/inode.c
@@ -29,7 +29,6 @@
 #include <linux/slab.h>
 #include <linux/statfs.h>
 #include <linux/writeback.h>
-#include <linux/quotaops.h>
 
 #include "netfs.h"
 
@@ -880,7 +879,7 @@
 /*
  * We want fsync() to work on POHMELFS.
  */
-static int pohmelfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+static int pohmelfs_fsync(struct file *file, int datasync)
 {
 	struct inode *inode = file->f_mapping->host;
 	struct writeback_control wbc = {
@@ -969,13 +968,6 @@
 		goto err_out_exit;
 	}
 
-	if ((attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
-	    (attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
-		err = dquot_transfer(inode, attr);
-		if (err)
-			goto err_out_exit;
-	}
-
 	err = inode_setattr(inode, attr);
 	if (err) {
 		dprintk("%s: ino: %llu, failed to set the attributes.\n", __func__, POHMELFS_I(inode)->ino);
diff --git a/drivers/telephony/ixj.c b/drivers/telephony/ixj.c
index e89304c..b53deee 100644
--- a/drivers/telephony/ixj.c
+++ b/drivers/telephony/ixj.c
@@ -5879,20 +5879,13 @@
 static int ixj_build_filter_cadence(IXJ *j, IXJ_FILTER_CADENCE __user * cp)
 {
 	IXJ_FILTER_CADENCE *lcp;
-	lcp = kmalloc(sizeof(IXJ_FILTER_CADENCE), GFP_KERNEL);
-	if (lcp == NULL) {
+	lcp = memdup_user(cp, sizeof(IXJ_FILTER_CADENCE));
+	if (IS_ERR(lcp)) {
 		if(ixjdebug & 0x0001) {
-			printk(KERN_INFO "Could not allocate memory for cadence\n");
+			printk(KERN_INFO "Could not allocate memory for cadence or could not copy cadence to kernel\n");
 		}
-		return -ENOMEM;
+		return PTR_ERR(lcp);
         }
-	if (copy_from_user(lcp, cp, sizeof(IXJ_FILTER_CADENCE))) {
-		if(ixjdebug & 0x0001) {
-			printk(KERN_INFO "Could not copy cadence to kernel\n");
-		}
-		kfree(lcp);
-		return -EFAULT;
-	}
 	if (lcp->filter > 5) {
 		if(ixjdebug & 0x0001) {
 			printk(KERN_INFO "Cadence out of range\n");
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 6b8bf8c..43abf55 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -794,7 +794,7 @@
 }
 
 static int
-printer_fsync(struct file *fd, struct dentry *dentry, int datasync)
+printer_fsync(struct file *fd, int datasync)
 {
 	struct printer_dev	*dev = fd->private_data;
 	unsigned long		flags;
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index aa88911..0f41c91 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -593,17 +593,17 @@
 	int r;
 	switch (ioctl) {
 	case VHOST_NET_SET_BACKEND:
-		r = copy_from_user(&backend, argp, sizeof backend);
-		if (r < 0)
-			return r;
+		if (copy_from_user(&backend, argp, sizeof backend))
+			return -EFAULT;
 		return vhost_net_set_backend(n, backend.index, backend.fd);
 	case VHOST_GET_FEATURES:
 		features = VHOST_FEATURES;
-		return copy_to_user(featurep, &features, sizeof features);
+		if (copy_to_user(featurep, &features, sizeof features))
+			return -EFAULT;
+		return 0;
 	case VHOST_SET_FEATURES:
-		r = copy_from_user(&features, featurep, sizeof features);
-		if (r < 0)
-			return r;
+		if (copy_from_user(&features, featurep, sizeof features))
+			return -EFAULT;
 		if (features & ~VHOST_FEATURES)
 			return -EOPNOTSUPP;
 		return vhost_net_set_features(n, features);
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c6fb8e9..3b83382 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -320,10 +320,8 @@
 {
 	struct vhost_memory mem, *newmem, *oldmem;
 	unsigned long size = offsetof(struct vhost_memory, regions);
-	long r;
-	r = copy_from_user(&mem, m, size);
-	if (r)
-		return r;
+	if (copy_from_user(&mem, m, size))
+		return -EFAULT;
 	if (mem.padding)
 		return -EOPNOTSUPP;
 	if (mem.nregions > VHOST_MEMORY_MAX_NREGIONS)
@@ -333,15 +331,16 @@
 		return -ENOMEM;
 
 	memcpy(newmem, &mem, size);
-	r = copy_from_user(newmem->regions, m->regions,
-			   mem.nregions * sizeof *m->regions);
-	if (r) {
+	if (copy_from_user(newmem->regions, m->regions,
+			   mem.nregions * sizeof *m->regions)) {
 		kfree(newmem);
-		return r;
+		return -EFAULT;
 	}
 
-	if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL)))
+	if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL))) {
+		kfree(newmem);
 		return -EFAULT;
+	}
 	oldmem = d->memory;
 	rcu_assign_pointer(d->memory, newmem);
 	synchronize_rcu();
@@ -374,7 +373,7 @@
 	r = get_user(idx, idxp);
 	if (r < 0)
 		return r;
-	if (idx > d->nvqs)
+	if (idx >= d->nvqs)
 		return -ENOBUFS;
 
 	vq = d->vqs + idx;
@@ -389,9 +388,10 @@
 			r = -EBUSY;
 			break;
 		}
-		r = copy_from_user(&s, argp, sizeof s);
-		if (r < 0)
+		if (copy_from_user(&s, argp, sizeof s)) {
+			r = -EFAULT;
 			break;
+		}
 		if (!s.num || s.num > 0xffff || (s.num & (s.num - 1))) {
 			r = -EINVAL;
 			break;
@@ -405,9 +405,10 @@
 			r = -EBUSY;
 			break;
 		}
-		r = copy_from_user(&s, argp, sizeof s);
-		if (r < 0)
+		if (copy_from_user(&s, argp, sizeof s)) {
+			r = -EFAULT;
 			break;
+		}
 		if (s.num > 0xffff) {
 			r = -EINVAL;
 			break;
@@ -419,12 +420,14 @@
 	case VHOST_GET_VRING_BASE:
 		s.index = idx;
 		s.num = vq->last_avail_idx;
-		r = copy_to_user(argp, &s, sizeof s);
+		if (copy_to_user(argp, &s, sizeof s))
+			r = -EFAULT;
 		break;
 	case VHOST_SET_VRING_ADDR:
-		r = copy_from_user(&a, argp, sizeof a);
-		if (r < 0)
+		if (copy_from_user(&a, argp, sizeof a)) {
+			r = -EFAULT;
 			break;
+		}
 		if (a.flags & ~(0x1 << VHOST_VRING_F_LOG)) {
 			r = -EOPNOTSUPP;
 			break;
@@ -477,9 +480,10 @@
 		vq->used = (void __user *)(unsigned long)a.used_user_addr;
 		break;
 	case VHOST_SET_VRING_KICK:
-		r = copy_from_user(&f, argp, sizeof f);
-		if (r < 0)
+		if (copy_from_user(&f, argp, sizeof f)) {
+			r = -EFAULT;
 			break;
+		}
 		eventfp = f.fd == -1 ? NULL : eventfd_fget(f.fd);
 		if (IS_ERR(eventfp)) {
 			r = PTR_ERR(eventfp);
@@ -492,9 +496,10 @@
 			filep = eventfp;
 		break;
 	case VHOST_SET_VRING_CALL:
-		r = copy_from_user(&f, argp, sizeof f);
-		if (r < 0)
+		if (copy_from_user(&f, argp, sizeof f)) {
+			r = -EFAULT;
 			break;
+		}
 		eventfp = f.fd == -1 ? NULL : eventfd_fget(f.fd);
 		if (IS_ERR(eventfp)) {
 			r = PTR_ERR(eventfp);
@@ -510,9 +515,10 @@
 			filep = eventfp;
 		break;
 	case VHOST_SET_VRING_ERR:
-		r = copy_from_user(&f, argp, sizeof f);
-		if (r < 0)
+		if (copy_from_user(&f, argp, sizeof f)) {
+			r = -EFAULT;
 			break;
+		}
 		eventfp = f.fd == -1 ? NULL : eventfd_fget(f.fd);
 		if (IS_ERR(eventfp)) {
 			r = PTR_ERR(eventfp);
@@ -575,9 +581,10 @@
 		r = vhost_set_memory(d, argp);
 		break;
 	case VHOST_SET_LOG_BASE:
-		r = copy_from_user(&p, argp, sizeof p);
-		if (r < 0)
+		if (copy_from_user(&p, argp, sizeof p)) {
+			r = -EFAULT;
 			break;
+		}
 		if ((u64)(unsigned long)p != p) {
 			r = -EFAULT;
 			break;
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
index 68d2518..38ffc3f 100644
--- a/drivers/video/backlight/88pm860x_bl.c
+++ b/drivers/video/backlight/88pm860x_bl.c
@@ -222,6 +222,7 @@
 	data->port = __check_device(pdata, name);
 	if (data->port < 0) {
 		dev_err(&pdev->dev, "wrong platform data is assigned");
+		kfree(data);
 		return -EINVAL;
 	}
 
@@ -266,6 +267,7 @@
 	backlight_update_status(bl);
 	return 0;
 out:
+	backlight_device_unregister(bl);
 	kfree(data);
 	return ret;
 }
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index c025c84..e54a337 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -8,12 +8,13 @@
 	  Enable this to be able to choose the drivers for controlling the
 	  backlight and the LCD panel on some platforms, for example on PDAs.
 
+if BACKLIGHT_LCD_SUPPORT
+
 #
 # LCD
 #
 config LCD_CLASS_DEVICE
         tristate "Lowlevel LCD controls"
-	depends on BACKLIGHT_LCD_SUPPORT
 	default m
 	help
 	  This framework adds support for low-level control of LCD.
@@ -24,31 +25,32 @@
 	  To have support for your specific LCD panel you will have to
 	  select the proper drivers which depend on this option.
 
+if LCD_CLASS_DEVICE
+
 config LCD_CORGI
 	tristate "LCD Panel support for SHARP corgi/spitz model"
-	depends on LCD_CLASS_DEVICE && SPI_MASTER && PXA_SHARPSL
+	depends on SPI_MASTER && PXA_SHARPSL
 	help
 	  Say y here to support the LCD panels usually found on SHARP
 	  corgi (C7x0) and spitz (Cxx00) models.
 
 config LCD_L4F00242T03
 	tristate "Epson L4F00242T03 LCD"
-	depends on LCD_CLASS_DEVICE && SPI_MASTER && GENERIC_GPIO
+	depends on SPI_MASTER && GENERIC_GPIO
 	help
 	  SPI driver for Epson L4F00242T03. This provides basic support
 	  for init and powering the LCD up/down through a sysfs interface.
 
 config LCD_LMS283GF05
 	tristate "Samsung LMS283GF05 LCD"
-	depends on LCD_CLASS_DEVICE && SPI_MASTER && GENERIC_GPIO
+	depends on SPI_MASTER && GENERIC_GPIO
 	help
 	  SPI driver for Samsung LMS283GF05. This provides basic support
 	  for powering the LCD up/down through a sysfs interface.
 
 config LCD_LTV350QV
 	tristate "Samsung LTV350QV LCD Panel"
-	depends on LCD_CLASS_DEVICE && SPI_MASTER
-	default n
+	depends on SPI_MASTER
 	help
 	  If you have a Samsung LTV350QV LCD panel, say y to include a
 	  power control driver for it.  The panel starts up in power
@@ -59,60 +61,61 @@
 
 config LCD_ILI9320
 	tristate
-	depends on LCD_CLASS_DEVICE && BACKLIGHT_LCD_SUPPORT
-	default n
 	help
 	  If you have a panel based on the ILI9320 controller chip
 	  then say y to include a power driver for it.
 
 config LCD_TDO24M
 	tristate "Toppoly TDO24M  and TDO35S LCD Panels support"
-	depends on LCD_CLASS_DEVICE && SPI_MASTER
-	default n
+	depends on SPI_MASTER
 	help
 	  If you have a Toppoly TDO24M/TDO35S series LCD panel, say y here to
 	  include the support for it.
 
 config LCD_VGG2432A4
 	tristate "VGG2432A4 LCM device support"
-	depends on BACKLIGHT_LCD_SUPPORT && LCD_CLASS_DEVICE && SPI_MASTER
+	depends on SPI_MASTER
 	select LCD_ILI9320
-	default n
 	help
 	  If you have a VGG2432A4 panel based on the ILI9320 controller chip
 	  then say y to include a power driver for it.
 
 config LCD_PLATFORM
 	tristate "Platform LCD controls"
-	depends on LCD_CLASS_DEVICE
 	help
 	  This driver provides a platform-device registered LCD power
 	  control interface.
 
 config LCD_TOSA
 	tristate "Sharp SL-6000 LCD Driver"
-	depends on LCD_CLASS_DEVICE && SPI
-	depends on MACH_TOSA
-	default n
+	depends on SPI && MACH_TOSA
 	help
 	  If you have an Sharp SL-6000 Zaurus say Y to enable a driver
 	  for its LCD.
 
 config LCD_HP700
 	tristate "HP Jornada 700 series LCD Driver"
-	depends on LCD_CLASS_DEVICE
 	depends on SA1100_JORNADA720_SSP && !PREEMPT
 	default y
 	help
 	  If you have an HP Jornada 700 series handheld (710/720/728)
 	  say Y to enable LCD control driver.
 
+config LCD_S6E63M0
+	tristate "S6E63M0 AMOLED LCD Driver"
+	depends on SPI && BACKLIGHT_CLASS_DEVICE
+	default n
+	help
+	  If you have an S6E63M0 LCD Panel, say Y to enable its
+	  LCD control driver.
+
+endif # LCD_CLASS_DEVICE
+
 #
 # Backlight
 #
 config BACKLIGHT_CLASS_DEVICE
         tristate "Lowlevel Backlight controls"
-	depends on BACKLIGHT_LCD_SUPPORT
 	default m
 	help
 	  This framework adds support for low-level control of the LCD
@@ -121,9 +124,11 @@
 	  To have support for your specific LCD panel you will have to
 	  select the proper drivers which depend on this option.
 
+if BACKLIGHT_CLASS_DEVICE
+
 config BACKLIGHT_ATMEL_LCDC
 	bool "Atmel LCDC Contrast-as-Backlight control"
-	depends on BACKLIGHT_CLASS_DEVICE && FB_ATMEL
+	depends on FB_ATMEL
 	default y if MACH_SAM9261EK || MACH_SAM9G10EK || MACH_SAM9263EK
 	help
 	  This provides a backlight control internal to the Atmel LCDC
@@ -136,8 +141,7 @@
 
 config BACKLIGHT_ATMEL_PWM
 	tristate "Atmel PWM backlight control"
-	depends on BACKLIGHT_CLASS_DEVICE && ATMEL_PWM
-	default n
+	depends on ATMEL_PWM
 	help
 	  Say Y here if you want to use the PWM peripheral in Atmel AT91 and
 	  AVR32 devices. This driver will need additional platform data to know
@@ -146,9 +150,18 @@
 	  To compile this driver as a module, choose M here: the module will be
 	  called atmel-pwm-bl.
 
+config BACKLIGHT_EP93XX
+	tristate "Cirrus EP93xx Backlight Driver"
+	depends on FB_EP93XX
+	help
+	  If you have a LCD backlight connected to the BRIGHT output of
+	  the EP93xx, say Y here to enable this driver.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called ep93xx_bl.
+
 config BACKLIGHT_GENERIC
 	tristate "Generic (aka Sharp Corgi) Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE
 	default y
 	help
 	  Say y to enable the generic platform backlight driver previously
@@ -157,7 +170,7 @@
 
 config BACKLIGHT_LOCOMO
 	tristate "Sharp LOCOMO LCD/Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && SHARP_LOCOMO
+	depends on SHARP_LOCOMO
 	default y
 	help
 	  If you have a Sharp Zaurus SL-5500 (Collie) or SL-5600 (Poodle) say y to
@@ -165,7 +178,7 @@
 
 config BACKLIGHT_OMAP1
 	tristate "OMAP1 PWL-based LCD Backlight"
-	depends on BACKLIGHT_CLASS_DEVICE && ARCH_OMAP1
+	depends on ARCH_OMAP1
 	default y
 	help
 	  This driver controls the LCD backlight level and power for
@@ -174,7 +187,7 @@
 
 config BACKLIGHT_HP680
 	tristate "HP Jornada 680 Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && SH_HP6XX
+	depends on SH_HP6XX
 	default y
 	help
 	  If you have a HP Jornada 680, say y to enable the
@@ -182,7 +195,6 @@
 
 config BACKLIGHT_HP700
 	tristate "HP Jornada 700 series Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE
 	depends on SA1100_JORNADA720_SSP && !PREEMPT
 	default y
 	help
@@ -191,76 +203,70 @@
 
 config BACKLIGHT_PROGEAR
 	tristate "Frontpath ProGear Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && PCI && X86
-	default n
+	depends on PCI && X86
 	help
 	  If you have a Frontpath ProGear say Y to enable the
 	  backlight driver.
 
 config BACKLIGHT_CARILLO_RANCH
 	tristate "Intel Carillo Ranch Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && LCD_CLASS_DEVICE && PCI && X86 && FB_LE80578
-	default n
+	depends on LCD_CLASS_DEVICE && PCI && X86 && FB_LE80578
 	help
 	  If you have a Intel LE80578 (Carillo Ranch) say Y to enable the
 	  backlight driver.
 
 config BACKLIGHT_PWM
 	tristate "Generic PWM based Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && HAVE_PWM
+	depends on HAVE_PWM
 	help
 	  If you have a LCD backlight adjustable by PWM, say Y to enable
 	  this driver.
 
 config BACKLIGHT_DA903X
 	tristate "Backlight Driver for DA9030/DA9034 using WLED"
-	depends on BACKLIGHT_CLASS_DEVICE && PMIC_DA903X
+	depends on PMIC_DA903X
 	help
 	  If you have a LCD backlight connected to the WLED output of DA9030
 	  or DA9034 WLED output, say Y here to enable this driver.
 
 config BACKLIGHT_MAX8925
 	tristate "Backlight driver for MAX8925"
-	depends on BACKLIGHT_CLASS_DEVICE && MFD_MAX8925
+	depends on MFD_MAX8925
 	help
 	  If you have a LCD backlight connected to the WLED output of MAX8925
 	  WLED output, say Y here to enable this driver.
 
 config BACKLIGHT_MBP_NVIDIA
        tristate "MacBook Pro Nvidia Backlight Driver"
-       depends on BACKLIGHT_CLASS_DEVICE && X86
-       default n
+       depends on X86
        help
          If you have an Apple Macbook Pro with Nvidia graphics hardware say Y
 	 to enable a driver for its backlight
 
 config BACKLIGHT_TOSA
 	tristate "Sharp SL-6000 Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && I2C
-	depends on MACH_TOSA && LCD_TOSA
-	default n
+	depends on I2C && MACH_TOSA && LCD_TOSA
 	help
 	  If you have an Sharp SL-6000 Zaurus say Y to enable a driver
 	  for its backlight
 
 config BACKLIGHT_SAHARA
 	tristate "Tabletkiosk Sahara Touch-iT Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && X86
-	default n
+	depends on X86
 	help
 	  If you have a Tabletkiosk Sahara Touch-iT, say y to enable the
 	  backlight driver.
 
 config BACKLIGHT_WM831X
 	tristate "WM831x PMIC Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && MFD_WM831X
+	depends on MFD_WM831X
 	help
 	  If you have a backlight driven by the ISINK and DCDC of a
 	  WM831x PMIC say y to enable the backlight driver for it.
 
 config BACKLIGHT_ADX
 	tristate "Avionic Design Xanthos Backlight Driver"
-	depends on BACKLIGHT_CLASS_DEVICE && ARCH_PXA_ADX
+	depends on ARCH_PXA_ADX
 	default y
 	help
 	  Say Y to enable the backlight driver on Avionic Design Xanthos-based
@@ -268,7 +274,7 @@
 
 config BACKLIGHT_ADP5520
 	tristate "Backlight Driver for ADP5520/ADP5501 using WLED"
-	depends on BACKLIGHT_CLASS_DEVICE && PMIC_ADP5520
+	depends on PMIC_ADP5520
 	help
 	  If you have a LCD backlight connected to the BST/BL_SNK output of
 	  ADP5520 or ADP5501, say Y here to enable this driver.
@@ -276,9 +282,31 @@
 	  To compile this driver as a module, choose M here: the module will
 	  be called adp5520_bl.
 
+config BACKLIGHT_ADP8860
+	tristate "Backlight Driver for ADP8860/ADP8861/ADP8863 using WLED"
+	depends on BACKLIGHT_CLASS_DEVICE && I2C
+	select NEW_LEDS
+	select LEDS_CLASS
+	help
+	  If you have a LCD backlight connected to the ADP8860, ADP8861 or
+	  ADP8863 say Y here to enable this driver.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called adp8860_bl.
+
 config BACKLIGHT_88PM860X
 	tristate "Backlight Driver for 88PM8606 using WLED"
-	depends on BACKLIGHT_CLASS_DEVICE && MFD_88PM860X
+	depends on MFD_88PM860X
 	help
 	  Say Y to enable the backlight driver for Marvell 88PM8606.
 
+config BACKLIGHT_PCF50633
+	tristate "Backlight driver for NXP PCF50633 MFD"
+	depends on BACKLIGHT_CLASS_DEVICE && MFD_PCF50633
+	help
+	  If you have a backlight driven by a NXP PCF50633 MFD, say Y here to
+	  enable its driver.
+
+endif # BACKLIGHT_CLASS_DEVICE
+
+endif # BACKLIGHT_LCD_SUPPORT
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 09d1f14..44c0f81 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -11,9 +11,11 @@
 obj-$(CONFIG_LCD_VGG2432A4)	   += vgg2432a4.o
 obj-$(CONFIG_LCD_TDO24M)	   += tdo24m.o
 obj-$(CONFIG_LCD_TOSA)		   += tosa_lcd.o
+obj-$(CONFIG_LCD_S6E63M0)	+= s6e63m0.o
 
 obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
 obj-$(CONFIG_BACKLIGHT_ATMEL_PWM)    += atmel-pwm-bl.o
+obj-$(CONFIG_BACKLIGHT_EP93XX)	+= ep93xx_bl.o
 obj-$(CONFIG_BACKLIGHT_GENERIC)	+= generic_bl.o
 obj-$(CONFIG_BACKLIGHT_HP700)	+= jornada720_bl.o
 obj-$(CONFIG_BACKLIGHT_HP680)	+= hp680_bl.o
@@ -30,5 +32,7 @@
 obj-$(CONFIG_BACKLIGHT_WM831X)	+= wm831x_bl.o
 obj-$(CONFIG_BACKLIGHT_ADX)    += adx_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP5520)	+= adp5520_bl.o
+obj-$(CONFIG_BACKLIGHT_ADP8860)	+= adp8860_bl.o
 obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o
+obj-$(CONFIG_BACKLIGHT_PCF50633)	+= pcf50633-backlight.o
 
diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
new file mode 100644
index 0000000..921ca37
--- /dev/null
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -0,0 +1,838 @@
+/*
+ * Backlight driver for Analog Devices ADP8860 Backlight Devices
+ *
+ * Copyright 2009-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#include <linux/i2c/adp8860.h>
+#define ADP8860_EXT_FEATURES
+#define ADP8860_USE_LEDS
+
+#define ADP8860_MFDVID 0x00 /* Manufacturer and device ID */
+#define ADP8860_MDCR 0x01 /* Device mode and status */
+#define ADP8860_MDCR2 0x02 /* Device mode and Status Register 2 */
+#define ADP8860_INTR_EN 0x03 /* Interrupts enable */
+#define ADP8860_CFGR 0x04 /* Configuration register */
+#define ADP8860_BLSEN 0x05 /* Sink enable backlight or independent */
+#define ADP8860_BLOFF 0x06 /* Backlight off timeout */
+#define ADP8860_BLDIM 0x07 /* Backlight dim timeout */
+#define ADP8860_BLFR 0x08 /* Backlight fade in and out rates */
+#define ADP8860_BLMX1 0x09 /* Backlight (Brightness Level 1-daylight) maximum current */
+#define ADP8860_BLDM1 0x0A /* Backlight (Brightness Level 1-daylight) dim current */
+#define ADP8860_BLMX2 0x0B /* Backlight (Brightness Level 2-office) maximum current */
+#define ADP8860_BLDM2 0x0C /* Backlight (Brightness Level 2-office) dim current */
+#define ADP8860_BLMX3 0x0D /* Backlight (Brightness Level 3-dark) maximum current */
+#define ADP8860_BLDM3 0x0E /* Backlight (Brightness Level 3-dark) dim current */
+#define ADP8860_ISCFR 0x0F /* Independent sink current fade control register */
+#define ADP8860_ISCC 0x10 /* Independent sink current control register */
+#define ADP8860_ISCT1 0x11 /* Independent Sink Current Timer Register LED[7:5] */
+#define ADP8860_ISCT2 0x12 /* Independent Sink Current Timer Register LED[4:1] */
+#define ADP8860_ISCF 0x13 /* Independent sink current fade register */
+#define ADP8860_ISC7 0x14 /* Independent Sink Current LED7 */
+#define ADP8860_ISC6 0x15 /* Independent Sink Current LED6 */
+#define ADP8860_ISC5 0x16 /* Independent Sink Current LED5 */
+#define ADP8860_ISC4 0x17 /* Independent Sink Current LED4 */
+#define ADP8860_ISC3 0x18 /* Independent Sink Current LED3 */
+#define ADP8860_ISC2 0x19 /* Independent Sink Current LED2 */
+#define ADP8860_ISC1 0x1A /* Independent Sink Current LED1 */
+#define ADP8860_CCFG 0x1B /* Comparator configuration */
+#define ADP8860_CCFG2 0x1C /* Second comparator configuration */
+#define ADP8860_L2_TRP 0x1D /* L2 comparator reference */
+#define ADP8860_L2_HYS 0x1E /* L2 hysteresis */
+#define ADP8860_L3_TRP 0x1F /* L3 comparator reference */
+#define ADP8860_L3_HYS 0x20 /* L3 hysteresis */
+#define ADP8860_PH1LEVL 0x21 /* First phototransistor ambient light level-low byte register */
+#define ADP8860_PH1LEVH 0x22 /* First phototransistor ambient light level-high byte register */
+#define ADP8860_PH2LEVL 0x23 /* Second phototransistor ambient light level-low byte register */
+#define ADP8860_PH2LEVH 0x24 /* Second phototransistor ambient light level-high byte register */
+
+#define ADP8860_MANUFID		0x0  /* Analog Devices ADP8860 Manufacturer ID */
+#define ADP8861_MANUFID		0x4  /* Analog Devices ADP8861 Manufacturer ID */
+#define ADP8863_MANUFID		0x2  /* Analog Devices ADP8863 Manufacturer ID */
+
+#define ADP8860_DEVID(x)	((x) & 0xF)
+#define ADP8860_MANID(x)	((x) >> 4)
+
+/* MDCR Device mode and status */
+#define INT_CFG			(1 << 6)
+#define NSTBY			(1 << 5)
+#define DIM_EN			(1 << 4)
+#define GDWN_DIS		(1 << 3)
+#define SIS_EN			(1 << 2)
+#define CMP_AUTOEN		(1 << 1)
+#define BLEN			(1 << 0)
+
+/* ADP8860_CCFG Main ALS comparator level enable */
+#define L3_EN			(1 << 1)
+#define L2_EN			(1 << 0)
+
+#define CFGR_BLV_SHIFT		3
+#define CFGR_BLV_MASK		0x3
+#define ADP8860_FLAG_LED_MASK	0xFF
+
+#define FADE_VAL(in, out)	((0xF & (in)) | ((0xF & (out)) << 4))
+#define BL_CFGR_VAL(law, blv)	((((blv) & CFGR_BLV_MASK) << CFGR_BLV_SHIFT) | ((0x3 & (law)) << 1))
+#define ALS_CCFG_VAL(filt)	((0x7 & filt) << 5)
+
+enum {
+	adp8860,
+	adp8861,
+	adp8863
+};
+
+struct adp8860_led {
+	struct led_classdev	cdev;
+	struct work_struct	work;
+	struct i2c_client	*client;
+	enum led_brightness	new_brightness;
+	int			id;
+	int			flags;
+};
+
+struct adp8860_bl {
+	struct i2c_client *client;
+	struct backlight_device *bl;
+	struct adp8860_led *led;
+	struct adp8860_backlight_platform_data *pdata;
+	struct mutex lock;
+	unsigned long cached_daylight_max;
+	int id;
+	int revid;
+	int current_brightness;
+	unsigned en_ambl_sens:1;
+	unsigned gdwn_dis:1;
+};
+
+static int adp8860_read(struct i2c_client *client, int reg, uint8_t *val)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(client, reg);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed reading at 0x%02x\n", reg);
+		return ret;
+	}
+
+	*val = (uint8_t)ret;
+	return 0;
+}
+
+static int adp8860_write(struct i2c_client *client, u8 reg, u8 val)
+{
+	return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int adp8860_set_bits(struct i2c_client *client, int reg, uint8_t bit_mask)
+{
+	struct adp8860_bl *data = i2c_get_clientdata(client);
+	uint8_t reg_val;
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	ret = adp8860_read(client, reg, &reg_val);
+
+	if (!ret && ((reg_val & bit_mask) == 0)) {
+		reg_val |= bit_mask;
+		ret = adp8860_write(client, reg, reg_val);
+	}
+
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int adp8860_clr_bits(struct i2c_client *client, int reg, uint8_t bit_mask)
+{
+	struct adp8860_bl *data = i2c_get_clientdata(client);
+	uint8_t reg_val;
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	ret = adp8860_read(client, reg, &reg_val);
+
+	if (!ret && (reg_val & bit_mask)) {
+		reg_val &= ~bit_mask;
+		ret = adp8860_write(client, reg, reg_val);
+	}
+
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+/*
+ * Independent sink / LED
+ */
+#if defined(ADP8860_USE_LEDS)
+static void adp8860_led_work(struct work_struct *work)
+{
+	struct adp8860_led *led = container_of(work, struct adp8860_led, work);
+	adp8860_write(led->client, ADP8860_ISC1 - led->id + 1,
+			 led->new_brightness >> 1);
+}
+
+static void adp8860_led_set(struct led_classdev *led_cdev,
+			   enum led_brightness value)
+{
+	struct adp8860_led *led;
+
+	led = container_of(led_cdev, struct adp8860_led, cdev);
+	led->new_brightness = value;
+	schedule_work(&led->work);
+}
+
+static int adp8860_led_setup(struct adp8860_led *led)
+{
+	struct i2c_client *client = led->client;
+	int ret = 0;
+
+	ret = adp8860_write(client, ADP8860_ISC1 - led->id + 1, 0);
+	ret |= adp8860_set_bits(client, ADP8860_ISCC, 1 << (led->id - 1));
+
+	if (led->id > 4)
+		ret |= adp8860_set_bits(client, ADP8860_ISCT1,
+				(led->flags & 0x3) << ((led->id - 5) * 2));
+	else
+		ret |= adp8860_set_bits(client, ADP8860_ISCT2,
+				(led->flags & 0x3) << ((led->id - 1) * 2));
+
+	return ret;
+}
+
+static int __devinit adp8860_led_probe(struct i2c_client *client)
+{
+	struct adp8860_backlight_platform_data *pdata =
+		client->dev.platform_data;
+	struct adp8860_bl *data = i2c_get_clientdata(client);
+	struct adp8860_led *led, *led_dat;
+	struct led_info *cur_led;
+	int ret, i;
+
+	led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL);
+	if (led == NULL) {
+		dev_err(&client->dev, "failed to alloc memory\n");
+		return -ENOMEM;
+	}
+
+	ret = adp8860_write(client, ADP8860_ISCFR, pdata->led_fade_law);
+	ret = adp8860_write(client, ADP8860_ISCT1,
+			(pdata->led_on_time & 0x3) << 6);
+	ret |= adp8860_write(client, ADP8860_ISCF,
+			FADE_VAL(pdata->led_fade_in, pdata->led_fade_out));
+
+	if (ret) {
+		dev_err(&client->dev, "failed to write\n");
+		goto err_free;
+	}
+
+	for (i = 0; i < pdata->num_leds; ++i) {
+		cur_led = &pdata->leds[i];
+		led_dat = &led[i];
+
+		led_dat->id = cur_led->flags & ADP8860_FLAG_LED_MASK;
+
+		if (led_dat->id > 7 || led_dat->id < 1) {
+			dev_err(&client->dev, "Invalid LED ID %d\n",
+				led_dat->id);
+			goto err;
+		}
+
+		if (pdata->bl_led_assign & (1 << (led_dat->id - 1))) {
+			dev_err(&client->dev, "LED %d used by Backlight\n",
+				led_dat->id);
+			goto err;
+		}
+
+		led_dat->cdev.name = cur_led->name;
+		led_dat->cdev.default_trigger = cur_led->default_trigger;
+		led_dat->cdev.brightness_set = adp8860_led_set;
+		led_dat->cdev.brightness = LED_OFF;
+		led_dat->flags = cur_led->flags >> FLAG_OFFT_SHIFT;
+		led_dat->client = client;
+		led_dat->new_brightness = LED_OFF;
+		INIT_WORK(&led_dat->work, adp8860_led_work);
+
+		ret = led_classdev_register(&client->dev, &led_dat->cdev);
+		if (ret) {
+			dev_err(&client->dev, "failed to register LED %d\n",
+				led_dat->id);
+			goto err;
+		}
+
+		ret = adp8860_led_setup(led_dat);
+		if (ret) {
+			dev_err(&client->dev, "failed to write\n");
+			i++;
+			goto err;
+		}
+	}
+
+	data->led = led;
+
+	return 0;
+
+ err:
+	for (i = i - 1; i >= 0; --i) {
+		led_classdev_unregister(&led[i].cdev);
+		cancel_work_sync(&led[i].work);
+	}
+
+ err_free:
+	kfree(led);
+
+	return ret;
+}
+
+static int __devexit adp8860_led_remove(struct i2c_client *client)
+{
+	struct adp8860_backlight_platform_data *pdata =
+		client->dev.platform_data;
+	struct adp8860_bl *data = i2c_get_clientdata(client);
+	int i;
+
+	for (i = 0; i < pdata->num_leds; i++) {
+		led_classdev_unregister(&data->led[i].cdev);
+		cancel_work_sync(&data->led[i].work);
+	}
+
+	kfree(data->led);
+	return 0;
+}
+#else
+static int __devinit adp8860_led_probe(struct i2c_client *client)
+{
+	return 0;
+}
+
+static int __devexit adp8860_led_remove(struct i2c_client *client)
+{
+	return 0;
+}
+#endif
+
+static int adp8860_bl_set(struct backlight_device *bl, int brightness)
+{
+	struct adp8860_bl *data = bl_get_data(bl);
+	struct i2c_client *client = data->client;
+	int ret = 0;
+
+	if (data->en_ambl_sens) {
+		if ((brightness > 0) && (brightness < ADP8860_MAX_BRIGHTNESS)) {
+			/* Disable Ambient Light auto adjust */
+			ret |= adp8860_clr_bits(client, ADP8860_MDCR,
+					CMP_AUTOEN);
+			ret |= adp8860_write(client, ADP8860_BLMX1, brightness);
+		} else {
+			/*
+			 * MAX_BRIGHTNESS -> Enable Ambient Light auto adjust
+			 * restore daylight l1 sysfs brightness
+			 */
+			ret |= adp8860_write(client, ADP8860_BLMX1,
+					 data->cached_daylight_max);
+			ret |= adp8860_set_bits(client, ADP8860_MDCR,
+					 CMP_AUTOEN);
+		}
+	} else
+		ret |= adp8860_write(client, ADP8860_BLMX1, brightness);
+
+	if (data->current_brightness && brightness == 0)
+		ret |= adp8860_set_bits(client,
+				ADP8860_MDCR, DIM_EN);
+	else if (data->current_brightness == 0 && brightness)
+		ret |= adp8860_clr_bits(client,
+				ADP8860_MDCR, DIM_EN);
+
+	if (!ret)
+		data->current_brightness = brightness;
+
+	return ret;
+}
+
+static int adp8860_bl_update_status(struct backlight_device *bl)
+{
+	int brightness = bl->props.brightness;
+	if (bl->props.power != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	return adp8860_bl_set(bl, brightness);
+}
+
+static int adp8860_bl_get_brightness(struct backlight_device *bl)
+{
+	struct adp8860_bl *data = bl_get_data(bl);
+
+	return data->current_brightness;
+}
+
+static const struct backlight_ops adp8860_bl_ops = {
+	.update_status	= adp8860_bl_update_status,
+	.get_brightness	= adp8860_bl_get_brightness,
+};
+
+static int adp8860_bl_setup(struct backlight_device *bl)
+{
+	struct adp8860_bl *data = bl_get_data(bl);
+	struct i2c_client *client = data->client;
+	struct adp8860_backlight_platform_data *pdata = data->pdata;
+	int ret = 0;
+
+	ret |= adp8860_write(client, ADP8860_BLSEN, ~pdata->bl_led_assign);
+	ret |= adp8860_write(client, ADP8860_BLMX1, pdata->l1_daylight_max);
+	ret |= adp8860_write(client, ADP8860_BLDM1, pdata->l1_daylight_dim);
+
+	if (data->en_ambl_sens) {
+		data->cached_daylight_max = pdata->l1_daylight_max;
+		ret |= adp8860_write(client, ADP8860_BLMX2,
+						pdata->l2_office_max);
+		ret |= adp8860_write(client, ADP8860_BLDM2,
+						pdata->l2_office_dim);
+		ret |= adp8860_write(client, ADP8860_BLMX3,
+						pdata->l3_dark_max);
+		ret |= adp8860_write(client, ADP8860_BLDM3,
+						pdata->l3_dark_dim);
+
+		ret |= adp8860_write(client, ADP8860_L2_TRP, pdata->l2_trip);
+		ret |= adp8860_write(client, ADP8860_L2_HYS, pdata->l2_hyst);
+		ret |= adp8860_write(client, ADP8860_L3_TRP, pdata->l3_trip);
+		ret |= adp8860_write(client, ADP8860_L3_HYS, pdata->l3_hyst);
+		ret |= adp8860_write(client, ADP8860_CCFG, L2_EN | L3_EN |
+						ALS_CCFG_VAL(pdata->abml_filt));
+	}
+
+	ret |= adp8860_write(client, ADP8860_CFGR,
+			BL_CFGR_VAL(pdata->bl_fade_law, 0));
+
+	ret |= adp8860_write(client, ADP8860_BLFR, FADE_VAL(pdata->bl_fade_in,
+			pdata->bl_fade_out));
+
+	ret |= adp8860_set_bits(client, ADP8860_MDCR, BLEN | DIM_EN | NSTBY |
+			(data->gdwn_dis ? GDWN_DIS : 0));
+
+	return ret;
+}
+
+static ssize_t adp8860_show(struct device *dev, char *buf, int reg)
+{
+	struct adp8860_bl *data = dev_get_drvdata(dev);
+	int error;
+	uint8_t reg_val;
+
+	mutex_lock(&data->lock);
+	error = adp8860_read(data->client, reg, &reg_val);
+	mutex_unlock(&data->lock);
+
+	if (error < 0)
+		return error;
+
+	return sprintf(buf, "%u\n", reg_val);
+}
+
+static ssize_t adp8860_store(struct device *dev, const char *buf,
+			 size_t count, int reg)
+{
+	struct adp8860_bl *data = dev_get_drvdata(dev);
+	unsigned long val;
+	int ret;
+
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	mutex_lock(&data->lock);
+	adp8860_write(data->client, reg, val);
+	mutex_unlock(&data->lock);
+
+	return count;
+}
+
+static ssize_t adp8860_bl_l3_dark_max_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	return adp8860_show(dev, buf, ADP8860_BLMX3);
+}
+
+static ssize_t adp8860_bl_l3_dark_max_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	return adp8860_store(dev, buf, count, ADP8860_BLMX3);
+}
+
+static DEVICE_ATTR(l3_dark_max, 0664, adp8860_bl_l3_dark_max_show,
+			adp8860_bl_l3_dark_max_store);
+
+static ssize_t adp8860_bl_l2_office_max_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	return adp8860_show(dev, buf, ADP8860_BLMX2);
+}
+
+static ssize_t adp8860_bl_l2_office_max_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	return adp8860_store(dev, buf, count, ADP8860_BLMX2);
+}
+static DEVICE_ATTR(l2_office_max, 0664, adp8860_bl_l2_office_max_show,
+			adp8860_bl_l2_office_max_store);
+
+static ssize_t adp8860_bl_l1_daylight_max_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	return adp8860_show(dev, buf, ADP8860_BLMX1);
+}
+
+static ssize_t adp8860_bl_l1_daylight_max_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct adp8860_bl *data = dev_get_drvdata(dev);
+
+	strict_strtoul(buf, 10, &data->cached_daylight_max);
+	return adp8860_store(dev, buf, count, ADP8860_BLMX1);
+}
+static DEVICE_ATTR(l1_daylight_max, 0664, adp8860_bl_l1_daylight_max_show,
+			adp8860_bl_l1_daylight_max_store);
+
+static ssize_t adp8860_bl_l3_dark_dim_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	return adp8860_show(dev, buf, ADP8860_BLDM3);
+}
+
+static ssize_t adp8860_bl_l3_dark_dim_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	return adp8860_store(dev, buf, count, ADP8860_BLDM3);
+}
+static DEVICE_ATTR(l3_dark_dim, 0664, adp8860_bl_l3_dark_dim_show,
+			adp8860_bl_l3_dark_dim_store);
+
+static ssize_t adp8860_bl_l2_office_dim_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	return adp8860_show(dev, buf, ADP8860_BLDM2);
+}
+
+static ssize_t adp8860_bl_l2_office_dim_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	return adp8860_store(dev, buf, count, ADP8860_BLDM2);
+}
+static DEVICE_ATTR(l2_office_dim, 0664, adp8860_bl_l2_office_dim_show,
+			adp8860_bl_l2_office_dim_store);
+
+static ssize_t adp8860_bl_l1_daylight_dim_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	return adp8860_show(dev, buf, ADP8860_BLDM1);
+}
+
+static ssize_t adp8860_bl_l1_daylight_dim_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	return adp8860_store(dev, buf, count, ADP8860_BLDM1);
+}
+static DEVICE_ATTR(l1_daylight_dim, 0664, adp8860_bl_l1_daylight_dim_show,
+			adp8860_bl_l1_daylight_dim_store);
+
+#ifdef ADP8860_EXT_FEATURES
+static ssize_t adp8860_bl_ambient_light_level_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct adp8860_bl *data = dev_get_drvdata(dev);
+	int error;
+	uint8_t reg_val;
+	uint16_t ret_val;
+
+	mutex_lock(&data->lock);
+	error = adp8860_read(data->client, ADP8860_PH1LEVL, &reg_val);
+	ret_val = reg_val;
+	error |= adp8860_read(data->client, ADP8860_PH1LEVH, &reg_val);
+	mutex_unlock(&data->lock);
+
+	if (error < 0)
+		return error;
+
+	/* Return 13-bit conversion value for the first light sensor */
+	ret_val += (reg_val & 0x1F) << 8;
+
+	return sprintf(buf, "%u\n", ret_val);
+}
+static DEVICE_ATTR(ambient_light_level, 0444,
+		adp8860_bl_ambient_light_level_show, NULL);
+
+static ssize_t adp8860_bl_ambient_light_zone_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct adp8860_bl *data = dev_get_drvdata(dev);
+	int error;
+	uint8_t reg_val;
+
+	mutex_lock(&data->lock);
+	error = adp8860_read(data->client, ADP8860_CFGR, &reg_val);
+	mutex_unlock(&data->lock);
+
+	if (error < 0)
+		return error;
+
+	return sprintf(buf, "%u\n",
+		((reg_val >> CFGR_BLV_SHIFT) & CFGR_BLV_MASK) + 1);
+}
+
+static ssize_t adp8860_bl_ambient_light_zone_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	struct adp8860_bl *data = dev_get_drvdata(dev);
+	unsigned long val;
+	uint8_t reg_val;
+	int ret;
+
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	if (val == 0) {
+		/* Enable automatic ambient light sensing */
+		adp8860_set_bits(data->client, ADP8860_MDCR, CMP_AUTOEN);
+	} else if ((val > 0) && (val < 6)) {
+		/* Disable automatic ambient light sensing */
+		adp8860_clr_bits(data->client, ADP8860_MDCR, CMP_AUTOEN);
+
+		/* Set user supplied ambient light zone */
+		mutex_lock(&data->lock);
+		adp8860_read(data->client, ADP8860_CFGR, &reg_val);
+		reg_val &= ~(CFGR_BLV_MASK << CFGR_BLV_SHIFT);
+		reg_val |= val << CFGR_BLV_SHIFT;
+		adp8860_write(data->client, ADP8860_CFGR, reg_val);
+		mutex_unlock(&data->lock);
+	}
+
+	return count;
+}
+static DEVICE_ATTR(ambient_light_zone, 0664,
+		adp8860_bl_ambient_light_zone_show,
+		adp8860_bl_ambient_light_zone_store);
+#endif
+
+static struct attribute *adp8860_bl_attributes[] = {
+	&dev_attr_l3_dark_max.attr,
+	&dev_attr_l3_dark_dim.attr,
+	&dev_attr_l2_office_max.attr,
+	&dev_attr_l2_office_dim.attr,
+	&dev_attr_l1_daylight_max.attr,
+	&dev_attr_l1_daylight_dim.attr,
+#ifdef ADP8860_EXT_FEATURES
+	&dev_attr_ambient_light_level.attr,
+	&dev_attr_ambient_light_zone.attr,
+#endif
+	NULL
+};
+
+static const struct attribute_group adp8860_bl_attr_group = {
+	.attrs = adp8860_bl_attributes,
+};
+
+static int __devinit adp8860_probe(struct i2c_client *client,
+					const struct i2c_device_id *id)
+{
+	struct backlight_device *bl;
+	struct adp8860_bl *data;
+	struct adp8860_backlight_platform_data *pdata =
+		client->dev.platform_data;
+	struct backlight_properties props;
+	uint8_t reg_val;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter,
+					I2C_FUNC_SMBUS_BYTE_DATA)) {
+		dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
+		return -EIO;
+	}
+
+	if (!pdata) {
+		dev_err(&client->dev, "no platform data?\n");
+		return -EINVAL;
+	}
+
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	ret = adp8860_read(client, ADP8860_MFDVID, &reg_val);
+	if (ret < 0)
+		goto out2;
+
+	switch (ADP8860_MANID(reg_val)) {
+	case ADP8863_MANUFID:
+		data->gdwn_dis = !!pdata->gdwn_dis;
+	case ADP8860_MANUFID:
+		data->en_ambl_sens = !!pdata->en_ambl_sens;
+		break;
+	case ADP8861_MANUFID:
+		data->gdwn_dis = !!pdata->gdwn_dis;
+		break;
+	default:
+		dev_err(&client->dev, "failed to probe\n");
+		ret = -ENODEV;
+		goto out2;
+	}
+
+	/* It's confirmed that the DEVID field is actually a REVID */
+
+	data->revid = ADP8860_DEVID(reg_val);
+	data->client = client;
+	data->pdata = pdata;
+	data->id = id->driver_data;
+	data->current_brightness = 0;
+	i2c_set_clientdata(client, data);
+
+	memset(&props, 0, sizeof(props));
+	props.max_brightness = ADP8860_MAX_BRIGHTNESS;
+
+	mutex_init(&data->lock);
+
+	bl = backlight_device_register(dev_driver_string(&client->dev),
+			&client->dev, data, &adp8860_bl_ops, &props);
+	if (IS_ERR(bl)) {
+		dev_err(&client->dev, "failed to register backlight\n");
+		ret = PTR_ERR(bl);
+		goto out2;
+	}
+
+	bl->props.max_brightness =
+		bl->props.brightness = ADP8860_MAX_BRIGHTNESS;
+
+	data->bl = bl;
+
+	if (data->en_ambl_sens)
+		ret = sysfs_create_group(&bl->dev.kobj,
+			&adp8860_bl_attr_group);
+
+	if (ret) {
+		dev_err(&client->dev, "failed to register sysfs\n");
+		goto out1;
+	}
+
+	ret = adp8860_bl_setup(bl);
+	if (ret) {
+		ret = -EIO;
+		goto out;
+	}
+
+	backlight_update_status(bl);
+
+	dev_info(&client->dev, "%s Rev.%d Backlight\n",
+		client->name, data->revid);
+
+	if (pdata->num_leds)
+		adp8860_led_probe(client);
+
+	return 0;
+
+out:
+	if (data->en_ambl_sens)
+		sysfs_remove_group(&data->bl->dev.kobj,
+			&adp8860_bl_attr_group);
+out1:
+	backlight_device_unregister(bl);
+out2:
+	i2c_set_clientdata(client, NULL);
+	kfree(data);
+
+	return ret;
+}
+
+static int __devexit adp8860_remove(struct i2c_client *client)
+{
+	struct adp8860_bl *data = i2c_get_clientdata(client);
+
+	adp8860_clr_bits(client, ADP8860_MDCR, NSTBY);
+
+	if (data->led)
+		adp8860_led_remove(client);
+
+	if (data->en_ambl_sens)
+		sysfs_remove_group(&data->bl->dev.kobj,
+			&adp8860_bl_attr_group);
+
+	backlight_device_unregister(data->bl);
+	i2c_set_clientdata(client, NULL);
+	kfree(data);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int adp8860_i2c_suspend(struct i2c_client *client, pm_message_t message)
+{
+	adp8860_clr_bits(client, ADP8860_MDCR, NSTBY);
+
+	return 0;
+}
+
+static int adp8860_i2c_resume(struct i2c_client *client)
+{
+	adp8860_set_bits(client, ADP8860_MDCR, NSTBY);
+
+	return 0;
+}
+#else
+#define adp8860_i2c_suspend NULL
+#define adp8860_i2c_resume NULL
+#endif
+
+static const struct i2c_device_id adp8860_id[] = {
+	{ "adp8860", adp8860 },
+	{ "adp8861", adp8861 },
+	{ "adp8863", adp8863 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adp8860_id);
+
+static struct i2c_driver adp8860_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+	},
+	.probe    = adp8860_probe,
+	.remove   = __devexit_p(adp8860_remove),
+	.suspend = adp8860_i2c_suspend,
+	.resume  = adp8860_i2c_resume,
+	.id_table = adp8860_id,
+};
+
+static int __init adp8860_init(void)
+{
+	return i2c_add_driver(&adp8860_driver);
+}
+module_init(adp8860_init);
+
+static void __exit adp8860_exit(void)
+{
+	i2c_del_driver(&adp8860_driver);
+}
+module_exit(adp8860_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("ADP8860 Backlight driver");
+MODULE_ALIAS("i2c:adp8860-backlight");
diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
index 7f4a7c3..fe9af12 100644
--- a/drivers/video/backlight/adx_bl.c
+++ b/drivers/video/backlight/adx_bl.c
@@ -107,8 +107,8 @@
 	props.max_brightness = 0xff;
 	bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
 					  bl, &adx_backlight_ops, &props);
-	if (!bldev) {
-		ret = -ENOMEM;
+	if (IS_ERR(bldev)) {
+		ret = PTR_ERR(bldev);
 		goto out;
 	}
 
diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c
new file mode 100644
index 0000000..b0cc491
--- /dev/null
+++ b/drivers/video/backlight/ep93xx_bl.c
@@ -0,0 +1,160 @@
+/*
+ * Driver for the Cirrus EP93xx lcd backlight
+ *
+ * Copyright (c) 2010 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This driver controls the pulse width modulated brightness control output,
+ * BRIGHT, on the Cirrus EP9307, EP9312, and EP9315 processors.
+ */
+
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+
+#include <mach/hardware.h>
+
+#define EP93XX_RASTER_REG(x)		(EP93XX_RASTER_BASE + (x))
+#define EP93XX_RASTER_BRIGHTNESS	EP93XX_RASTER_REG(0x20)
+
+#define EP93XX_MAX_COUNT		255
+#define EP93XX_MAX_BRIGHT		255
+#define EP93XX_DEF_BRIGHT		128
+
+struct ep93xxbl {
+	void __iomem *mmio;
+	int brightness;
+};
+
+static int ep93xxbl_set(struct backlight_device *bl, int brightness)
+{
+	struct ep93xxbl *ep93xxbl = bl_get_data(bl);
+
+	__raw_writel((brightness << 8) | EP93XX_MAX_COUNT, ep93xxbl->mmio);
+
+	ep93xxbl->brightness = brightness;
+
+	return 0;
+}
+
+static int ep93xxbl_update_status(struct backlight_device *bl)
+{
+	int brightness = bl->props.brightness;
+
+	if (bl->props.power != FB_BLANK_UNBLANK ||
+	    bl->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	return ep93xxbl_set(bl, brightness);
+}
+
+static int ep93xxbl_get_brightness(struct backlight_device *bl)
+{
+	struct ep93xxbl *ep93xxbl = bl_get_data(bl);
+
+	return ep93xxbl->brightness;
+}
+
+static const struct backlight_ops ep93xxbl_ops = {
+	.update_status	= ep93xxbl_update_status,
+	.get_brightness	= ep93xxbl_get_brightness,
+};
+
+static int __init ep93xxbl_probe(struct platform_device *dev)
+{
+	struct ep93xxbl *ep93xxbl;
+	struct backlight_device *bl;
+	struct backlight_properties props;
+
+	ep93xxbl = devm_kzalloc(&dev->dev, sizeof(*ep93xxbl), GFP_KERNEL);
+	if (!ep93xxbl)
+		return -ENOMEM;
+
+	/*
+	 * This register is located in the range already ioremap'ed by
+	 * the framebuffer driver.  A MFD driver seems a bit of overkill
+	 * to handle this so use the static I/O mapping; this address
+	 * is already virtual.
+	 *
+	 * NOTE: No locking is required; the framebuffer does not touch
+	 * this register.
+	 */
+	ep93xxbl->mmio = EP93XX_RASTER_BRIGHTNESS;
+
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.max_brightness = EP93XX_MAX_BRIGHT;
+	bl = backlight_device_register(dev->name, &dev->dev, ep93xxbl,
+				       &ep93xxbl_ops, &props);
+	if (IS_ERR(bl))
+		return PTR_ERR(bl);
+
+	bl->props.brightness = EP93XX_DEF_BRIGHT;
+
+	platform_set_drvdata(dev, bl);
+
+	ep93xxbl_update_status(bl);
+
+	return 0;
+}
+
+static int ep93xxbl_remove(struct platform_device *dev)
+{
+	struct backlight_device *bl = platform_get_drvdata(dev);
+
+	backlight_device_unregister(bl);
+	platform_set_drvdata(dev, NULL);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ep93xxbl_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct backlight_device *bl = platform_get_drvdata(dev);
+
+	return ep93xxbl_set(bl, 0);
+}
+
+static int ep93xxbl_resume(struct platform_device *dev)
+{
+	struct backlight_device *bl = platform_get_drvdata(dev);
+
+	backlight_update_status(bl);
+	return 0;
+}
+#else
+#define ep93xxbl_suspend	NULL
+#define ep93xxbl_resume		NULL
+#endif
+
+static struct platform_driver ep93xxbl_driver = {
+	.driver		= {
+		.name	= "ep93xx-bl",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= ep93xxbl_probe,
+	.remove		= __devexit_p(ep93xxbl_remove),
+	.suspend	= ep93xxbl_suspend,
+	.resume		= ep93xxbl_resume,
+};
+
+static int __init ep93xxbl_init(void)
+{
+	return platform_driver_register(&ep93xxbl_driver);
+}
+module_init(ep93xxbl_init);
+
+static void __exit ep93xxbl_exit(void)
+{
+	platform_driver_unregister(&ep93xxbl_driver);
+}
+module_exit(ep93xxbl_exit);
+
+MODULE_DESCRIPTION("EP93xx Backlight Driver");
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ep93xx-bl");
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index bcdb12c..9093ef0 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -125,8 +125,7 @@
 
 	if (priv == NULL) {
 		dev_err(&spi->dev, "No memory for this device.\n");
-		ret = -ENOMEM;
-		goto err;
+		return -ENOMEM;
 	}
 
 	dev_set_drvdata(&spi->dev, priv);
@@ -139,7 +138,7 @@
 	if (ret) {
 		dev_err(&spi->dev,
 			"Unable to get the lcd l4f00242t03 reset gpio.\n");
-		return ret;
+		goto err;
 	}
 
 	ret = gpio_direction_output(pdata->reset_gpio, 1);
@@ -151,7 +150,7 @@
 	if (ret) {
 		dev_err(&spi->dev,
 			"Unable to get the lcd l4f00242t03 data en gpio.\n");
-		return ret;
+		goto err2;
 	}
 
 	ret = gpio_direction_output(pdata->data_enable_gpio, 0);
@@ -222,9 +221,9 @@
 	gpio_free(pdata->reset_gpio);
 
 	if (priv->io_reg)
-		regulator_put(priv->core_reg);
-	if (priv->core_reg)
 		regulator_put(priv->io_reg);
+	if (priv->core_reg)
+		regulator_put(priv->core_reg);
 
 	kfree(priv);
 
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index b5accc9..b2b2c7b 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -162,6 +162,7 @@
 	backlight_update_status(bl);
 	return 0;
 out:
+	backlight_device_unregister(bl);
 	kfree(data);
 	return ret;
 }
diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c
index 1b5d3fe..9fb533f 100644
--- a/drivers/video/backlight/mbp_nvidia_bl.c
+++ b/drivers/video/backlight/mbp_nvidia_bl.c
@@ -141,7 +141,7 @@
 		.callback	= mbp_dmi_match,
 		.ident		= "MacBook 1,1",
 		.matches	= {
-			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
 		},
 		.driver_data	= (void *)&intel_chipset_data,
@@ -184,6 +184,42 @@
 	},
 	{
 		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 1,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 1,2",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,2"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 2,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,1"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 2,2",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
 		.ident		= "MacBookPro 3,1",
 		.matches	= {
 			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
@@ -238,6 +274,15 @@
 	},
 	{
 		.callback	= mbp_dmi_match,
+		.ident		= "MacBook 6,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),
+		},
+		.driver_data	= (void *)&nvidia_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
 		.ident		= "MacBookAir 2,1",
 		.matches	= {
 			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c
new file mode 100644
index 0000000..3c424f7
--- /dev/null
+++ b/drivers/video/backlight/pcf50633-backlight.c
@@ -0,0 +1,190 @@
+/*
+ *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
+ *      PCF50633 backlight device driver
+ *
+ *  This program is free software; you can redistribute	 it and/or modify it
+ *  under  the terms of	 the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+#include <linux/backlight.h>
+#include <linux/fb.h>
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/backlight.h>
+
+struct pcf50633_bl {
+	struct pcf50633 *pcf;
+	struct backlight_device *bl;
+
+	unsigned int brightness;
+	unsigned int brightness_limit;
+};
+
+/*
+ * pcf50633_bl_set_brightness_limit
+ *
+ * Update the brightness limit for the pc50633 backlight. The actual brightness
+ * will not go above the limit. This is useful to limit power drain for example
+ * on low battery.
+ *
+ * @dev: Pointer to a pcf50633 device
+ * @limit: The brightness limit. Valid values are 0-63
+ */
+int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit)
+{
+	struct pcf50633_bl *pcf_bl = platform_get_drvdata(pcf->bl_pdev);
+
+	if (!pcf_bl)
+		return -ENODEV;
+
+	pcf_bl->brightness_limit = limit & 0x3f;
+	backlight_update_status(pcf_bl->bl);
+
+    return 0;
+}
+
+static int pcf50633_bl_update_status(struct backlight_device *bl)
+{
+	struct pcf50633_bl *pcf_bl = bl_get_data(bl);
+	unsigned int new_brightness;
+
+
+	if (bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK) ||
+		bl->props.power != FB_BLANK_UNBLANK)
+		new_brightness = 0;
+	else if (bl->props.brightness < pcf_bl->brightness_limit)
+		new_brightness = bl->props.brightness;
+	else
+		new_brightness = pcf_bl->brightness_limit;
+
+
+	if (pcf_bl->brightness == new_brightness)
+		return 0;
+
+	if (new_brightness) {
+		pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDOUT,
+					new_brightness);
+		if (!pcf_bl->brightness)
+			pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDENA, 1);
+	} else {
+		pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDENA, 0);
+	}
+
+	pcf_bl->brightness = new_brightness;
+
+	return 0;
+}
+
+static int pcf50633_bl_get_brightness(struct backlight_device *bl)
+{
+	struct pcf50633_bl *pcf_bl = bl_get_data(bl);
+	return pcf_bl->brightness;
+}
+
+static const struct backlight_ops pcf50633_bl_ops = {
+	.get_brightness = pcf50633_bl_get_brightness,
+	.update_status	= pcf50633_bl_update_status,
+	.options	= BL_CORE_SUSPENDRESUME,
+};
+
+static int __devinit pcf50633_bl_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct pcf50633_bl *pcf_bl;
+	struct device *parent = pdev->dev.parent;
+	struct pcf50633_platform_data *pcf50633_data = parent->platform_data;
+	struct pcf50633_bl_platform_data *pdata = pcf50633_data->backlight_data;
+	struct backlight_properties bl_props;
+
+	pcf_bl = kzalloc(sizeof(*pcf_bl), GFP_KERNEL);
+	if (!pcf_bl)
+		return -ENOMEM;
+
+	bl_props.max_brightness = 0x3f;
+	bl_props.power = FB_BLANK_UNBLANK;
+
+	if (pdata) {
+		bl_props.brightness = pdata->default_brightness;
+		pcf_bl->brightness_limit = pdata->default_brightness_limit;
+	} else {
+		bl_props.brightness = 0x3f;
+		pcf_bl->brightness_limit = 0x3f;
+	}
+
+	pcf_bl->pcf = dev_to_pcf50633(pdev->dev.parent);
+
+	pcf_bl->bl = backlight_device_register(pdev->name, &pdev->dev, pcf_bl,
+						&pcf50633_bl_ops, &bl_props);
+
+	if (IS_ERR(pcf_bl->bl)) {
+		ret = PTR_ERR(pcf_bl->bl);
+		goto err_free;
+	}
+
+	platform_set_drvdata(pdev, pcf_bl);
+
+	pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDDIM, pdata->ramp_time);
+
+	/* Should be different from bl_props.brightness, so we do not exit
+	 * update_status early the first time it's called */
+	pcf_bl->brightness = pcf_bl->bl->props.brightness + 1;
+
+	backlight_update_status(pcf_bl->bl);
+
+	return 0;
+
+err_free:
+	kfree(pcf_bl);
+
+	return ret;
+}
+
+static int __devexit pcf50633_bl_remove(struct platform_device *pdev)
+{
+	struct pcf50633_bl *pcf_bl = platform_get_drvdata(pdev);
+
+	backlight_device_unregister(pcf_bl->bl);
+
+	platform_set_drvdata(pdev, NULL);
+
+	kfree(pcf_bl);
+
+	return 0;
+}
+
+static struct platform_driver pcf50633_bl_driver = {
+	.probe =	pcf50633_bl_probe,
+	.remove =	__devexit_p(pcf50633_bl_remove),
+	.driver = {
+		.name = "pcf50633-backlight",
+	},
+};
+
+static int __init pcf50633_bl_init(void)
+{
+	return platform_driver_register(&pcf50633_bl_driver);
+}
+module_init(pcf50633_bl_init);
+
+static void __exit pcf50633_bl_exit(void)
+{
+	platform_driver_unregister(&pcf50633_bl_driver);
+}
+module_exit(pcf50633_bl_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("PCF50633 backlight driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcf50633-backlight");
diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c
new file mode 100644
index 0000000..a3128c9
--- /dev/null
+++ b/drivers/video/backlight/s6e63m0.c
@@ -0,0 +1,920 @@
+/*
+ * S6E63M0 AMOLED LCD panel driver.
+ *
+ * Author: InKi Dae  <inki.dae@samsung.com>
+ *
+ * Derived from drivers/video/omap/lcd-apollon.c
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include <linux/wait.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/lcd.h>
+#include <linux/backlight.h>
+
+#include "s6e63m0_gamma.h"
+
+#define SLEEPMSEC		0x1000
+#define ENDDEF			0x2000
+#define	DEFMASK			0xFF00
+#define COMMAND_ONLY		0xFE
+#define DATA_ONLY		0xFF
+
+#define MIN_BRIGHTNESS		0
+#define MAX_BRIGHTNESS		10
+
+#define POWER_IS_ON(pwr)	((pwr) <= FB_BLANK_NORMAL)
+
+struct s6e63m0 {
+	struct device			*dev;
+	struct spi_device		*spi;
+	unsigned int			power;
+	unsigned int			current_brightness;
+	unsigned int			gamma_mode;
+	unsigned int			gamma_table_count;
+	struct lcd_device		*ld;
+	struct backlight_device		*bd;
+	struct lcd_platform_data	*lcd_pd;
+};
+
+static const unsigned short SEQ_PANEL_CONDITION_SET[] = {
+	0xF8, 0x01,
+	DATA_ONLY, 0x27,
+	DATA_ONLY, 0x27,
+	DATA_ONLY, 0x07,
+	DATA_ONLY, 0x07,
+	DATA_ONLY, 0x54,
+	DATA_ONLY, 0x9f,
+	DATA_ONLY, 0x63,
+	DATA_ONLY, 0x86,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x33,
+	DATA_ONLY, 0x0d,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_DISPLAY_CONDITION_SET[] = {
+	0xf2, 0x02,
+	DATA_ONLY, 0x03,
+	DATA_ONLY, 0x1c,
+	DATA_ONLY, 0x10,
+	DATA_ONLY, 0x10,
+
+	0xf7, 0x03,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_GAMMA_SETTING[] = {
+	0xfa, 0x00,
+	DATA_ONLY, 0x18,
+	DATA_ONLY, 0x08,
+	DATA_ONLY, 0x24,
+	DATA_ONLY, 0x64,
+	DATA_ONLY, 0x56,
+	DATA_ONLY, 0x33,
+	DATA_ONLY, 0xb6,
+	DATA_ONLY, 0xba,
+	DATA_ONLY, 0xa8,
+	DATA_ONLY, 0xac,
+	DATA_ONLY, 0xb1,
+	DATA_ONLY, 0x9d,
+	DATA_ONLY, 0xc1,
+	DATA_ONLY, 0xc1,
+	DATA_ONLY, 0xb7,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x9c,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x9f,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0xd6,
+
+	0xfa, 0x01,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_ETC_CONDITION_SET[] = {
+	0xf6, 0x00,
+	DATA_ONLY, 0x8c,
+	DATA_ONLY, 0x07,
+
+	0xb3, 0xc,
+
+	0xb5, 0x2c,
+	DATA_ONLY, 0x12,
+	DATA_ONLY, 0x0c,
+	DATA_ONLY, 0x0a,
+	DATA_ONLY, 0x10,
+	DATA_ONLY, 0x0e,
+	DATA_ONLY, 0x17,
+	DATA_ONLY, 0x13,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x2a,
+	DATA_ONLY, 0x24,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x1b,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x17,
+
+	DATA_ONLY, 0x2b,
+	DATA_ONLY, 0x26,
+	DATA_ONLY, 0x22,
+	DATA_ONLY, 0x20,
+	DATA_ONLY, 0x3a,
+	DATA_ONLY, 0x34,
+	DATA_ONLY, 0x30,
+	DATA_ONLY, 0x2c,
+	DATA_ONLY, 0x29,
+	DATA_ONLY, 0x26,
+	DATA_ONLY, 0x25,
+	DATA_ONLY, 0x23,
+	DATA_ONLY, 0x21,
+	DATA_ONLY, 0x20,
+	DATA_ONLY, 0x1e,
+	DATA_ONLY, 0x1e,
+
+	0xb6, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x11,
+	DATA_ONLY, 0x22,
+	DATA_ONLY, 0x33,
+	DATA_ONLY, 0x44,
+	DATA_ONLY, 0x44,
+	DATA_ONLY, 0x44,
+
+	DATA_ONLY, 0x55,
+	DATA_ONLY, 0x55,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+
+	0xb7, 0x2c,
+	DATA_ONLY, 0x12,
+	DATA_ONLY, 0x0c,
+	DATA_ONLY, 0x0a,
+	DATA_ONLY, 0x10,
+	DATA_ONLY, 0x0e,
+	DATA_ONLY, 0x17,
+	DATA_ONLY, 0x13,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x2a,
+	DATA_ONLY, 0x24,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x1b,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x17,
+
+	DATA_ONLY, 0x2b,
+	DATA_ONLY, 0x26,
+	DATA_ONLY, 0x22,
+	DATA_ONLY, 0x20,
+	DATA_ONLY, 0x3a,
+	DATA_ONLY, 0x34,
+	DATA_ONLY, 0x30,
+	DATA_ONLY, 0x2c,
+	DATA_ONLY, 0x29,
+	DATA_ONLY, 0x26,
+	DATA_ONLY, 0x25,
+	DATA_ONLY, 0x23,
+	DATA_ONLY, 0x21,
+	DATA_ONLY, 0x20,
+	DATA_ONLY, 0x1e,
+	DATA_ONLY, 0x1e,
+
+	0xb8, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x11,
+	DATA_ONLY, 0x22,
+	DATA_ONLY, 0x33,
+	DATA_ONLY, 0x44,
+	DATA_ONLY, 0x44,
+	DATA_ONLY, 0x44,
+
+	DATA_ONLY, 0x55,
+	DATA_ONLY, 0x55,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+
+	0xb9, 0x2c,
+	DATA_ONLY, 0x12,
+	DATA_ONLY, 0x0c,
+	DATA_ONLY, 0x0a,
+	DATA_ONLY, 0x10,
+	DATA_ONLY, 0x0e,
+	DATA_ONLY, 0x17,
+	DATA_ONLY, 0x13,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x2a,
+	DATA_ONLY, 0x24,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x1b,
+	DATA_ONLY, 0x1a,
+	DATA_ONLY, 0x17,
+
+	DATA_ONLY, 0x2b,
+	DATA_ONLY, 0x26,
+	DATA_ONLY, 0x22,
+	DATA_ONLY, 0x20,
+	DATA_ONLY, 0x3a,
+	DATA_ONLY, 0x34,
+	DATA_ONLY, 0x30,
+	DATA_ONLY, 0x2c,
+	DATA_ONLY, 0x29,
+	DATA_ONLY, 0x26,
+	DATA_ONLY, 0x25,
+	DATA_ONLY, 0x23,
+	DATA_ONLY, 0x21,
+	DATA_ONLY, 0x20,
+	DATA_ONLY, 0x1e,
+	DATA_ONLY, 0x1e,
+
+	0xba, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x11,
+	DATA_ONLY, 0x22,
+	DATA_ONLY, 0x33,
+	DATA_ONLY, 0x44,
+	DATA_ONLY, 0x44,
+	DATA_ONLY, 0x44,
+
+	DATA_ONLY, 0x55,
+	DATA_ONLY, 0x55,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+	DATA_ONLY, 0x66,
+
+	0xc1, 0x4d,
+	DATA_ONLY, 0x96,
+	DATA_ONLY, 0x1d,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x01,
+	DATA_ONLY, 0xdf,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x03,
+	DATA_ONLY, 0x1f,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x00,
+	DATA_ONLY, 0x03,
+	DATA_ONLY, 0x06,
+	DATA_ONLY, 0x09,
+	DATA_ONLY, 0x0d,
+	DATA_ONLY, 0x0f,
+	DATA_ONLY, 0x12,
+	DATA_ONLY, 0x15,
+	DATA_ONLY, 0x18,
+
+	0xb2, 0x10,
+	DATA_ONLY, 0x10,
+	DATA_ONLY, 0x0b,
+	DATA_ONLY, 0x05,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_ACL_ON[] = {
+	/* ACL on */
+	0xc0, 0x01,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_ACL_OFF[] = {
+	/* ACL off */
+	0xc0, 0x00,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_ELVSS_ON[] = {
+	/* ELVSS on */
+	0xb1, 0x0b,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_ELVSS_OFF[] = {
+	/* ELVSS off */
+	0xb1, 0x0a,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_STAND_BY_OFF[] = {
+	0x11, COMMAND_ONLY,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_STAND_BY_ON[] = {
+	0x10, COMMAND_ONLY,
+
+	ENDDEF, 0x0000
+};
+
+static const unsigned short SEQ_DISPLAY_ON[] = {
+	0x29, COMMAND_ONLY,
+
+	ENDDEF, 0x0000
+};
+
+
+static int s6e63m0_spi_write_byte(struct s6e63m0 *lcd, int addr, int data)
+{
+	u16 buf[1];
+	struct spi_message msg;
+
+	struct spi_transfer xfer = {
+		.len		= 2,
+		.tx_buf		= buf,
+	};
+
+	buf[0] = (addr << 8) | data;
+
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+
+	return spi_sync(lcd->spi, &msg);
+}
+
+static int s6e63m0_spi_write(struct s6e63m0 *lcd, unsigned char address,
+	unsigned char command)
+{
+	int ret = 0;
+
+	if (address != DATA_ONLY)
+		ret = s6e63m0_spi_write_byte(lcd, 0x0, address);
+	if (command != COMMAND_ONLY)
+		ret = s6e63m0_spi_write_byte(lcd, 0x1, command);
+
+	return ret;
+}
+
+static int s6e63m0_panel_send_sequence(struct s6e63m0 *lcd,
+	const unsigned short *wbuf)
+{
+	int ret = 0, i = 0;
+
+	while ((wbuf[i] & DEFMASK) != ENDDEF) {
+		if ((wbuf[i] & DEFMASK) != SLEEPMSEC) {
+			ret = s6e63m0_spi_write(lcd, wbuf[i], wbuf[i+1]);
+			if (ret)
+				break;
+		} else
+			udelay(wbuf[i+1]*1000);
+		i += 2;
+	}
+
+	return ret;
+}
+
+static int _s6e63m0_gamma_ctl(struct s6e63m0 *lcd, const unsigned int *gamma)
+{
+	unsigned int i = 0;
+	int ret = 0;
+
+	/* disable gamma table updating. */
+	ret = s6e63m0_spi_write(lcd, 0xfa, 0x00);
+	if (ret) {
+		dev_err(lcd->dev, "failed to disable gamma table updating.\n");
+		goto gamma_err;
+	}
+
+	for (i = 0 ; i < GAMMA_TABLE_COUNT; i++) {
+		ret = s6e63m0_spi_write(lcd, DATA_ONLY, gamma[i]);
+		if (ret) {
+			dev_err(lcd->dev, "failed to set gamma table.\n");
+			goto gamma_err;
+		}
+	}
+
+	/* update gamma table. */
+	ret = s6e63m0_spi_write(lcd, 0xfa, 0x01);
+	if (ret)
+		dev_err(lcd->dev, "failed to update gamma table.\n");
+
+gamma_err:
+	return ret;
+}
+
+static int s6e63m0_gamma_ctl(struct s6e63m0 *lcd, int gamma)
+{
+	int ret = 0;
+
+	ret = _s6e63m0_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
+
+	return ret;
+}
+
+
+static int s6e63m0_ldi_init(struct s6e63m0 *lcd)
+{
+	int ret, i;
+	const unsigned short *init_seq[] = {
+		SEQ_PANEL_CONDITION_SET,
+		SEQ_DISPLAY_CONDITION_SET,
+		SEQ_GAMMA_SETTING,
+		SEQ_ETC_CONDITION_SET,
+		SEQ_ACL_ON,
+		SEQ_ELVSS_ON,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+		ret = s6e63m0_panel_send_sequence(lcd, init_seq[i]);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int s6e63m0_ldi_enable(struct s6e63m0 *lcd)
+{
+	int ret = 0, i;
+	const unsigned short *enable_seq[] = {
+		SEQ_STAND_BY_OFF,
+		SEQ_DISPLAY_ON,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(enable_seq); i++) {
+		ret = s6e63m0_panel_send_sequence(lcd, enable_seq[i]);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static int s6e63m0_ldi_disable(struct s6e63m0 *lcd)
+{
+	int ret;
+
+	ret = s6e63m0_panel_send_sequence(lcd, SEQ_STAND_BY_ON);
+
+	return ret;
+}
+
+static int s6e63m0_power_on(struct s6e63m0 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd = NULL;
+	struct backlight_device *bd = NULL;
+
+	pd = lcd->lcd_pd;
+	if (!pd) {
+		dev_err(lcd->dev, "platform data is NULL.\n");
+		return -EFAULT;
+	}
+
+	bd = lcd->bd;
+	if (!bd) {
+		dev_err(lcd->dev, "backlight device is NULL.\n");
+		return -EFAULT;
+	}
+
+	if (!pd->power_on) {
+		dev_err(lcd->dev, "power_on is NULL.\n");
+		return -EFAULT;
+	} else {
+		pd->power_on(lcd->ld, 1);
+		mdelay(pd->power_on_delay);
+	}
+
+	if (!pd->reset) {
+		dev_err(lcd->dev, "reset is NULL.\n");
+		return -EFAULT;
+	} else {
+		pd->reset(lcd->ld);
+		mdelay(pd->reset_delay);
+	}
+
+	ret = s6e63m0_ldi_init(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "failed to initialize ldi.\n");
+		return ret;
+	}
+
+	ret = s6e63m0_ldi_enable(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "failed to enable ldi.\n");
+		return ret;
+	}
+
+	/* set brightness to current value after power on or resume. */
+	ret = s6e63m0_gamma_ctl(lcd, bd->props.brightness);
+	if (ret) {
+		dev_err(lcd->dev, "lcd gamma setting failed.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int s6e63m0_power_off(struct s6e63m0 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd = NULL;
+
+	pd = lcd->lcd_pd;
+	if (!pd) {
+		dev_err(lcd->dev, "platform data is NULL.\n");
+		return -EFAULT;
+	}
+
+	ret = s6e63m0_ldi_disable(lcd);
+	if (ret) {
+		dev_err(lcd->dev, "lcd setting failed.\n");
+		return -EIO;
+	}
+
+	mdelay(pd->power_off_delay);
+
+	if (!pd->power_on) {
+		dev_err(lcd->dev, "power_on is NULL.\n");
+		return -EFAULT;
+	} else
+		pd->power_on(lcd->ld, 0);
+
+	return 0;
+}
+
+static int s6e63m0_power(struct s6e63m0 *lcd, int power)
+{
+	int ret = 0;
+
+	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))
+		ret = s6e63m0_power_on(lcd);
+	else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))
+		ret = s6e63m0_power_off(lcd);
+
+	if (!ret)
+		lcd->power = power;
+
+	return ret;
+}
+
+static int s6e63m0_set_power(struct lcd_device *ld, int power)
+{
+	struct s6e63m0 *lcd = lcd_get_data(ld);
+
+	if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+		power != FB_BLANK_NORMAL) {
+		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
+		return -EINVAL;
+	}
+
+	return s6e63m0_power(lcd, power);
+}
+
+static int s6e63m0_get_power(struct lcd_device *ld)
+{
+	struct s6e63m0 *lcd = lcd_get_data(ld);
+
+	return lcd->power;
+}
+
+static int s6e63m0_get_brightness(struct backlight_device *bd)
+{
+	return bd->props.brightness;
+}
+
+static int s6e63m0_set_brightness(struct backlight_device *bd)
+{
+	int ret = 0, brightness = bd->props.brightness;
+	struct s6e63m0 *lcd = bl_get_data(bd);
+
+	if (brightness < MIN_BRIGHTNESS ||
+		brightness > bd->props.max_brightness) {
+		dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",
+			MIN_BRIGHTNESS, MAX_BRIGHTNESS);
+		return -EINVAL;
+	}
+
+	ret = s6e63m0_gamma_ctl(lcd, bd->props.brightness);
+	if (ret) {
+		dev_err(&bd->dev, "lcd brightness setting failed.\n");
+		return -EIO;
+	}
+
+	return ret;
+}
+
+static struct lcd_ops s6e63m0_lcd_ops = {
+	.set_power = s6e63m0_set_power,
+	.get_power = s6e63m0_get_power,
+};
+
+static const struct backlight_ops s6e63m0_backlight_ops  = {
+	.get_brightness = s6e63m0_get_brightness,
+	.update_status = s6e63m0_set_brightness,
+};
+
+static ssize_t s6e63m0_sysfs_show_gamma_mode(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct s6e63m0 *lcd = dev_get_drvdata(dev);
+	char temp[10];
+
+	switch (lcd->gamma_mode) {
+	case 0:
+		sprintf(temp, "2.2 mode\n");
+		strcat(buf, temp);
+		break;
+	case 1:
+		sprintf(temp, "1.9 mode\n");
+		strcat(buf, temp);
+		break;
+	case 2:
+		sprintf(temp, "1.7 mode\n");
+		strcat(buf, temp);
+		break;
+	default:
+		dev_info(dev, "gamma mode could be 0:2.2, 1:1.9 or 2:1.7)n");
+		break;
+	}
+
+	return strlen(buf);
+}
+
+static ssize_t s6e63m0_sysfs_store_gamma_mode(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf, size_t len)
+{
+	struct s6e63m0 *lcd = dev_get_drvdata(dev);
+	struct backlight_device *bd = NULL;
+	int brightness, rc;
+
+	rc = strict_strtoul(buf, 0, (unsigned long *)&lcd->gamma_mode);
+	if (rc < 0)
+		return rc;
+
+	bd = lcd->bd;
+
+	brightness = bd->props.brightness;
+
+	switch (lcd->gamma_mode) {
+	case 0:
+		_s6e63m0_gamma_ctl(lcd, gamma_table.gamma_22_table[brightness]);
+		break;
+	case 1:
+		_s6e63m0_gamma_ctl(lcd, gamma_table.gamma_19_table[brightness]);
+		break;
+	case 2:
+		_s6e63m0_gamma_ctl(lcd, gamma_table.gamma_17_table[brightness]);
+		break;
+	default:
+		dev_info(dev, "gamma mode could be 0:2.2, 1:1.9 or 2:1.7\n");
+		_s6e63m0_gamma_ctl(lcd, gamma_table.gamma_22_table[brightness]);
+		break;
+	}
+	return len;
+}
+
+static DEVICE_ATTR(gamma_mode, 0644,
+		s6e63m0_sysfs_show_gamma_mode, s6e63m0_sysfs_store_gamma_mode);
+
+static ssize_t s6e63m0_sysfs_show_gamma_table(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct s6e63m0 *lcd = dev_get_drvdata(dev);
+	char temp[3];
+
+	sprintf(temp, "%d\n", lcd->gamma_table_count);
+	strcpy(buf, temp);
+
+	return strlen(buf);
+}
+static DEVICE_ATTR(gamma_table, 0644,
+		s6e63m0_sysfs_show_gamma_table, NULL);
+
+static int __init s6e63m0_probe(struct spi_device *spi)
+{
+	int ret = 0;
+	struct s6e63m0 *lcd = NULL;
+	struct lcd_device *ld = NULL;
+	struct backlight_device *bd = NULL;
+
+	lcd = kzalloc(sizeof(struct s6e63m0), GFP_KERNEL);
+	if (!lcd)
+		return -ENOMEM;
+
+	/* s6e63m0 lcd panel uses 3-wire 9bits SPI Mode. */
+	spi->bits_per_word = 9;
+
+	ret = spi_setup(spi);
+	if (ret < 0) {
+		dev_err(&spi->dev, "spi setup failed.\n");
+		goto out_free_lcd;
+	}
+
+	lcd->spi = spi;
+	lcd->dev = &spi->dev;
+
+	lcd->lcd_pd = (struct lcd_platform_data *)spi->dev.platform_data;
+	if (!lcd->lcd_pd) {
+		dev_err(&spi->dev, "platform data is NULL.\n");
+		goto out_free_lcd;
+	}
+
+	ld = lcd_device_register("s6e63m0", &spi->dev, lcd, &s6e63m0_lcd_ops);
+	if (IS_ERR(ld)) {
+		ret = PTR_ERR(ld);
+		goto out_free_lcd;
+	}
+
+	lcd->ld = ld;
+
+	bd = backlight_device_register("s6e63m0bl-bl", &spi->dev, lcd,
+		&s6e63m0_backlight_ops, NULL);
+	if (IS_ERR(bd)) {
+		ret =  PTR_ERR(bd);
+		goto out_lcd_unregister;
+	}
+
+	bd->props.max_brightness = MAX_BRIGHTNESS;
+	bd->props.brightness = MAX_BRIGHTNESS;
+	lcd->bd = bd;
+
+	/*
+	 * it gets gamma table count available so it gets user
+	 * know that.
+	 */
+	lcd->gamma_table_count =
+	    sizeof(gamma_table) / (MAX_GAMMA_LEVEL * sizeof(int));
+
+	ret = device_create_file(&(spi->dev), &dev_attr_gamma_mode);
+	if (ret < 0)
+		dev_err(&(spi->dev), "failed to add sysfs entries\n");
+
+	ret = device_create_file(&(spi->dev), &dev_attr_gamma_table);
+	if (ret < 0)
+		dev_err(&(spi->dev), "failed to add sysfs entries\n");
+
+	/*
+	 * if lcd panel was on from bootloader like u-boot then
+	 * do not lcd on.
+	 */
+	if (!lcd->lcd_pd->lcd_enabled) {
+		/*
+		 * if lcd panel was off from bootloader then
+		 * current lcd status is powerdown and then
+		 * it enables lcd panel.
+		 */
+		lcd->power = FB_BLANK_POWERDOWN;
+
+		s6e63m0_power(lcd, FB_BLANK_UNBLANK);
+	} else
+		lcd->power = FB_BLANK_UNBLANK;
+
+	dev_set_drvdata(&spi->dev, lcd);
+
+	dev_info(&spi->dev, "s6e63m0 panel driver has been probed.\n");
+
+	return 0;
+
+out_lcd_unregister:
+	lcd_device_unregister(ld);
+out_free_lcd:
+	kfree(lcd);
+	return ret;
+}
+
+static int __devexit s6e63m0_remove(struct spi_device *spi)
+{
+	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+
+	s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
+	lcd_device_unregister(lcd->ld);
+	kfree(lcd);
+
+	return 0;
+}
+
+#if defined(CONFIG_PM)
+unsigned int before_power;
+
+static int s6e63m0_suspend(struct spi_device *spi, pm_message_t mesg)
+{
+	int ret = 0;
+	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+
+	dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
+
+	before_power = lcd->power;
+
+	/*
+	 * when lcd panel is suspend, lcd panel becomes off
+	 * regardless of status.
+	 */
+	ret = s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
+
+	return ret;
+}
+
+static int s6e63m0_resume(struct spi_device *spi)
+{
+	int ret = 0;
+	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+
+	/*
+	 * after suspended, if lcd panel status is FB_BLANK_UNBLANK
+	 * (at that time, before_power is FB_BLANK_UNBLANK) then
+	 * it changes that status to FB_BLANK_POWERDOWN to get lcd on.
+	 */
+	if (before_power == FB_BLANK_UNBLANK)
+		lcd->power = FB_BLANK_POWERDOWN;
+
+	dev_dbg(&spi->dev, "before_power = %d\n", before_power);
+
+	ret = s6e63m0_power(lcd, before_power);
+
+	return ret;
+}
+#else
+#define s6e63m0_suspend		NULL
+#define s6e63m0_resume		NULL
+#endif
+
+/* Power down all displays on reboot, poweroff or halt. */
+static void s6e63m0_shutdown(struct spi_device *spi)
+{
+	struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
+
+	s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver s6e63m0_driver = {
+	.driver = {
+		.name	= "s6e63m0",
+		.bus	= &spi_bus_type,
+		.owner	= THIS_MODULE,
+	},
+	.probe		= s6e63m0_probe,
+	.remove		= __devexit_p(s6e63m0_remove),
+	.shutdown	= s6e63m0_shutdown,
+	.suspend	= s6e63m0_suspend,
+	.resume		= s6e63m0_resume,
+};
+
+static int __init s6e63m0_init(void)
+{
+	return spi_register_driver(&s6e63m0_driver);
+}
+
+static void __exit s6e63m0_exit(void)
+{
+	spi_unregister_driver(&s6e63m0_driver);
+}
+
+module_init(s6e63m0_init);
+module_exit(s6e63m0_exit);
+
+MODULE_AUTHOR("InKi Dae <inki.dae@samsung.com>");
+MODULE_DESCRIPTION("S6E63M0 LCD Driver");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/video/backlight/s6e63m0_gamma.h b/drivers/video/backlight/s6e63m0_gamma.h
new file mode 100644
index 0000000..2c44bdb
--- /dev/null
+++ b/drivers/video/backlight/s6e63m0_gamma.h
@@ -0,0 +1,266 @@
+/* linux/drivers/video/samsung/s6e63m0_brightness.h
+ *
+ * Gamma level definitions.
+ *
+ * Copyright (c) 2009 Samsung Electronics
+ * InKi Dae <inki.dae@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef _S6E63M0_BRIGHTNESS_H
+#define _S6E63M0_BRIGHTNESS_H
+
+#define MAX_GAMMA_LEVEL		11
+#define GAMMA_TABLE_COUNT	21
+
+/* gamma value: 2.2 */
+static const unsigned int s6e63m0_22_300[] = {
+	0x18, 0x08, 0x24, 0x5f, 0x50, 0x2d, 0xB6,
+	0xB9, 0xA7, 0xAd, 0xB1, 0x9f, 0xbe, 0xC0,
+	0xB5, 0x00, 0xa0, 0x00, 0xa4, 0x00, 0xdb
+};
+
+static const unsigned int s6e63m0_22_280[] = {
+	0x18, 0x08, 0x24, 0x64, 0x56, 0x33, 0xB6,
+	0xBA, 0xA8, 0xAC, 0xB1, 0x9D, 0xC1, 0xC1,
+	0xB7, 0x00, 0x9C, 0x00, 0x9F, 0x00, 0xD6
+};
+
+static const unsigned int s6e63m0_22_260[] = {
+	0x18, 0x08, 0x24, 0x66, 0x58, 0x34, 0xB6,
+	0xBA, 0xA7, 0xAF, 0xB3, 0xA0, 0xC1, 0xC2,
+	0xB7, 0x00, 0x97, 0x00, 0x9A, 0x00, 0xD1
+
+};
+
+static const unsigned int s6e63m0_22_240[] = {
+	0x18, 0x08, 0x24, 0x62, 0x54, 0x30, 0xB9,
+	0xBB, 0xA9, 0xB0, 0xB3, 0xA1, 0xC1, 0xC3,
+	0xB7, 0x00, 0x91, 0x00, 0x95, 0x00, 0xDA
+
+};
+static const unsigned int s6e63m0_22_220[] = {
+	0x18, 0x08, 0x24, 0x63, 0x53, 0x31, 0xB8,
+	0xBC, 0xA9, 0xB0, 0xB5, 0xA2, 0xC4, 0xC4,
+	0xB8, 0x00, 0x8B, 0x00, 0x8E, 0x00, 0xC2
+};
+
+static const unsigned int s6e63m0_22_200[] = {
+	0x18, 0x08, 0x24, 0x66, 0x55, 0x34, 0xBA,
+	0xBD, 0xAB, 0xB1, 0xB5, 0xA3, 0xC5, 0xC6,
+	0xB9, 0x00, 0x85, 0x00, 0x88, 0x00, 0xBA
+};
+
+static const unsigned int s6e63m0_22_170[] = {
+	0x18, 0x08, 0x24, 0x69, 0x54, 0x37, 0xBB,
+	0xBE, 0xAC, 0xB4, 0xB7, 0xA6, 0xC7, 0xC8,
+	0xBC, 0x00, 0x7B, 0x00, 0x7E, 0x00, 0xAB
+};
+
+static const unsigned int s6e63m0_22_140[] = {
+	0x18, 0x08, 0x24, 0x6C, 0x54, 0x3A, 0xBC,
+	0xBF, 0xAC, 0xB7, 0xBB, 0xA9, 0xC9, 0xC9,
+	0xBE, 0x00, 0x71, 0x00, 0x73, 0x00, 0x9E
+};
+
+static const unsigned int s6e63m0_22_110[] = {
+	0x18, 0x08, 0x24, 0x70, 0x51, 0x3E, 0xBF,
+	0xC1, 0xAF, 0xB9, 0xBC, 0xAB, 0xCC, 0xCC,
+	0xC2, 0x00, 0x65, 0x00, 0x67, 0x00, 0x8D
+};
+
+static const unsigned int s6e63m0_22_90[] = {
+	0x18, 0x08, 0x24, 0x73, 0x4A, 0x3D, 0xC0,
+	0xC2, 0xB1, 0xBB, 0xBE, 0xAC, 0xCE, 0xCF,
+	0xC5, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x82
+};
+
+static const unsigned int s6e63m0_22_30[] = {
+	0x18, 0x08, 0x24, 0x78, 0xEC, 0x3D, 0xC8,
+	0xC2, 0xB6, 0xC4, 0xC7, 0xB6, 0xD5, 0xD7,
+	0xCC, 0x00, 0x39, 0x00, 0x36, 0x00, 0x51
+};
+
+/* gamma value: 1.9 */
+static const unsigned int s6e63m0_19_300[] = {
+	0x18, 0x08, 0x24, 0x61, 0x5F, 0x39, 0xBA,
+	0xBD, 0xAD, 0xB1, 0xB6, 0xA5, 0xC4, 0xC5,
+	0xBC, 0x00, 0xA0, 0x00, 0xA4, 0x00, 0xDB
+};
+
+static const unsigned int s6e63m0_19_280[] = {
+	0x18, 0x08, 0x24, 0x61, 0x60, 0x39, 0xBB,
+	0xBE, 0xAD, 0xB2, 0xB6, 0xA6, 0xC5, 0xC7,
+	0xBD, 0x00, 0x9B, 0x00, 0x9E, 0x00, 0xD5
+};
+
+static const unsigned int s6e63m0_19_260[] = {
+	0x18, 0x08, 0x24, 0x63, 0x61, 0x3B, 0xBA,
+	0xBE, 0xAC, 0xB3, 0xB8, 0xA7, 0xC6, 0xC8,
+	0xBD, 0x00, 0x96, 0x00, 0x98, 0x00, 0xCF
+};
+
+static const unsigned int s6e63m0_19_240[] = {
+	0x18, 0x08, 0x24, 0x67, 0x64, 0x3F, 0xBB,
+	0xBE, 0xAD, 0xB3, 0xB9, 0xA7, 0xC8, 0xC9,
+	0xBE, 0x00, 0x90, 0x00, 0x92, 0x00, 0xC8
+};
+
+static const unsigned int s6e63m0_19_220[] = {
+	0x18, 0x08, 0x24, 0x68, 0x64, 0x40, 0xBC,
+	0xBF, 0xAF, 0xB4, 0xBA, 0xA9, 0xC8, 0xCA,
+	0xBE, 0x00, 0x8B, 0x00, 0x8C, 0x00, 0xC0
+};
+
+static const unsigned int s6e63m0_19_200[] = {
+	0x18, 0x08, 0x24, 0x68, 0x64, 0x3F, 0xBE,
+	0xC0, 0xB0, 0xB6, 0xBB, 0xAB, 0xC8, 0xCB,
+	0xBF, 0x00, 0x85, 0x00, 0x86, 0x00, 0xB8
+};
+
+static const unsigned int s6e63m0_19_170[] = {
+	0x18, 0x08, 0x24, 0x69, 0x64, 0x40, 0xBF,
+	0xC1, 0xB0, 0xB9, 0xBE, 0xAD, 0xCB, 0xCD,
+	0xC2, 0x00, 0x7A, 0x00, 0x7B, 0x00, 0xAA
+};
+
+static const unsigned int s6e63m0_19_140[] = {
+	0x18, 0x08, 0x24, 0x6E, 0x65, 0x45, 0xC0,
+	0xC3, 0xB2, 0xBA, 0xBE, 0xAE, 0xCD, 0xD0,
+	0xC4, 0x00, 0x70, 0x00, 0x70, 0x00, 0x9C
+};
+
+static const unsigned int s6e63m0_19_110[] = {
+	0x18, 0x08, 0x24, 0x6F, 0x65, 0x46, 0xC2,
+	0xC4, 0xB3, 0xBF, 0xC2, 0xB2, 0xCF, 0xD1,
+	0xC6, 0x00, 0x64, 0x00, 0x64, 0x00, 0x8D
+};
+
+static const unsigned int s6e63m0_19_90[] = {
+	0x18, 0x08, 0x24, 0x74, 0x60, 0x4A, 0xC3,
+	0xC6, 0xB5, 0xBF, 0xC3, 0xB2, 0xD2, 0xD3,
+	0xC8, 0x00, 0x5B, 0x00, 0x5B, 0x00, 0x81
+};
+
+static const unsigned int s6e63m0_19_30[] = {
+	0x18, 0x08, 0x24, 0x84, 0x45, 0x4F, 0xCA,
+	0xCB, 0xBC, 0xC9, 0xCB, 0xBC, 0xDA, 0xDA,
+	0xD0, 0x00, 0x35, 0x00, 0x34, 0x00, 0x4E
+};
+
+/* gamma value: 1.7 */
+static const unsigned int s6e63m0_17_300[] = {
+	0x18, 0x08, 0x24, 0x70, 0x70, 0x4F, 0xBF,
+	0xC2, 0xB2, 0xB8, 0xBC, 0xAC, 0xCB, 0xCD,
+	0xC3, 0x00, 0xA0, 0x00, 0xA4, 0x00, 0xDB
+};
+
+static const unsigned int s6e63m0_17_280[] = {
+	0x18, 0x08, 0x24, 0x71, 0x71, 0x50, 0xBF,
+	0xC2, 0xB2, 0xBA, 0xBE, 0xAE, 0xCB, 0xCD,
+	0xC3, 0x00, 0x9C, 0x00, 0x9F, 0x00, 0xD6
+};
+
+static const unsigned int s6e63m0_17_260[] = {
+	0x18, 0x08, 0x24, 0x72, 0x72, 0x50, 0xC0,
+	0xC3, 0xB4, 0xB9, 0xBE, 0xAE, 0xCC, 0xCF,
+	0xC4, 0x00, 0x97, 0x00, 0x9A, 0x00, 0xD1
+};
+
+static const unsigned int s6e63m0_17_240[] = {
+	0x18, 0x08, 0x24, 0x71, 0x72, 0x4F, 0xC2,
+	0xC4, 0xB5, 0xBB, 0xBF, 0xB0, 0xCC, 0xCF,
+	0xC3, 0x00, 0x91, 0x00, 0x95, 0x00, 0xCA
+};
+
+static const unsigned int s6e63m0_17_220[] = {
+	0x18, 0x08, 0x24, 0x71, 0x73, 0x4F, 0xC2,
+	0xC5, 0xB5, 0xBD, 0xC0, 0xB2, 0xCD, 0xD1,
+	0xC5, 0x00, 0x8B, 0x00, 0x8E, 0x00, 0xC2
+};
+
+static const unsigned int s6e63m0_17_200[] = {
+	0x18, 0x08, 0x24, 0x72, 0x75, 0x51, 0xC2,
+	0xC6, 0xB5, 0xBF, 0xC1, 0xB3, 0xCE, 0xD1,
+	0xC6, 0x00, 0x85, 0x00, 0x88, 0x00, 0xBA
+};
+
+static const unsigned int s6e63m0_17_170[] = {
+	0x18, 0x08, 0x24, 0x75, 0x77, 0x54, 0xC3,
+	0xC7, 0xB7, 0xC0, 0xC3, 0xB4, 0xD1, 0xD3,
+	0xC9, 0x00, 0x7B, 0x00, 0x7E, 0x00, 0xAB
+};
+
+static const unsigned int s6e63m0_17_140[] = {
+	0x18, 0x08, 0x24, 0x7B, 0x77, 0x58, 0xC3,
+	0xC8, 0xB8, 0xC2, 0xC6, 0xB6, 0xD3, 0xD4,
+	0xCA, 0x00, 0x71, 0x00, 0x73, 0x00, 0x9E
+};
+
+static const unsigned int s6e63m0_17_110[] = {
+	0x18, 0x08, 0x24, 0x81, 0x7B, 0x5D, 0xC6,
+	0xCA, 0xBB, 0xC3, 0xC7, 0xB8, 0xD6, 0xD8,
+	0xCD, 0x00, 0x65, 0x00, 0x67, 0x00, 0x8D
+};
+
+static const unsigned int s6e63m0_17_90[] = {
+	0x18, 0x08, 0x24, 0x82, 0x7A, 0x5B, 0xC8,
+	0xCB, 0xBD, 0xC5, 0xCA, 0xBA, 0xD6, 0xD8,
+	0xCE, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x82
+};
+
+static const unsigned int s6e63m0_17_30[] = {
+	0x18, 0x08, 0x24, 0x8F, 0x73, 0x63, 0xD1,
+	0xD0, 0xC5, 0xCC, 0xD1, 0xC2, 0xDE, 0xE0,
+	0xD6, 0x00, 0x39, 0x00, 0x36, 0x00, 0x51
+};
+
+struct s6e63m0_gamma {
+	unsigned int *gamma_22_table[MAX_GAMMA_LEVEL];
+	unsigned int *gamma_19_table[MAX_GAMMA_LEVEL];
+	unsigned int *gamma_17_table[MAX_GAMMA_LEVEL];
+};
+
+static struct s6e63m0_gamma gamma_table = {
+	.gamma_22_table[0] = (unsigned int *)&s6e63m0_22_30,
+	.gamma_22_table[1] = (unsigned int *)&s6e63m0_22_90,
+	.gamma_22_table[2] = (unsigned int *)&s6e63m0_22_110,
+	.gamma_22_table[3] = (unsigned int *)&s6e63m0_22_140,
+	.gamma_22_table[4] = (unsigned int *)&s6e63m0_22_170,
+	.gamma_22_table[5] = (unsigned int *)&s6e63m0_22_200,
+	.gamma_22_table[6] = (unsigned int *)&s6e63m0_22_220,
+	.gamma_22_table[7] = (unsigned int *)&s6e63m0_22_240,
+	.gamma_22_table[8] = (unsigned int *)&s6e63m0_22_260,
+	.gamma_22_table[9] = (unsigned int *)&s6e63m0_22_280,
+	.gamma_22_table[10] = (unsigned int *)&s6e63m0_22_300,
+
+	.gamma_19_table[0] = (unsigned int *)&s6e63m0_19_30,
+	.gamma_19_table[1] = (unsigned int *)&s6e63m0_19_90,
+	.gamma_19_table[2] = (unsigned int *)&s6e63m0_19_110,
+	.gamma_19_table[3] = (unsigned int *)&s6e63m0_19_140,
+	.gamma_19_table[4] = (unsigned int *)&s6e63m0_19_170,
+	.gamma_19_table[5] = (unsigned int *)&s6e63m0_19_200,
+	.gamma_19_table[6] = (unsigned int *)&s6e63m0_19_220,
+	.gamma_19_table[7] = (unsigned int *)&s6e63m0_19_240,
+	.gamma_19_table[8] = (unsigned int *)&s6e63m0_19_260,
+	.gamma_19_table[9] = (unsigned int *)&s6e63m0_19_280,
+	.gamma_19_table[10] = (unsigned int *)&s6e63m0_19_300,
+
+	.gamma_17_table[0] = (unsigned int *)&s6e63m0_17_30,
+	.gamma_17_table[1] = (unsigned int *)&s6e63m0_17_90,
+	.gamma_17_table[2] = (unsigned int *)&s6e63m0_17_110,
+	.gamma_17_table[3] = (unsigned int *)&s6e63m0_17_140,
+	.gamma_17_table[4] = (unsigned int *)&s6e63m0_17_170,
+	.gamma_17_table[5] = (unsigned int *)&s6e63m0_17_200,
+	.gamma_17_table[6] = (unsigned int *)&s6e63m0_17_220,
+	.gamma_17_table[7] = (unsigned int *)&s6e63m0_17_240,
+	.gamma_17_table[8] = (unsigned int *)&s6e63m0_17_260,
+	.gamma_17_table[9] = (unsigned int *)&s6e63m0_17_280,
+	.gamma_17_table[10] = (unsigned int *)&s6e63m0_17_300,
+};
+
+#endif
+
diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 23b2a8c..b020ba7 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -501,7 +501,9 @@
 
 static int __devinit bfin_bf54x_probe(struct platform_device *pdev)
 {
+#ifndef NO_BL_SUPPORT
 	struct backlight_properties props;
+#endif
 	struct bfin_bf54xfb_info *info;
 	struct fb_info *fbinfo;
 	int ret;
@@ -654,7 +656,8 @@
 		printk(KERN_ERR DRIVER_NAME
 			": unable to register backlight.\n");
 		ret = -EINVAL;
-		goto out9;
+		unregister_framebuffer(fbinfo);
+		goto out8;
 	}
 
 	lcd_dev = lcd_device_register(DRIVER_NAME, &pdev->dev, NULL, &bfin_lcd_ops);
@@ -663,8 +666,6 @@
 
 	return 0;
 
-out9:
-	unregister_framebuffer(fbinfo);
 out8:
 	free_irq(info->irq, info);
 out7:
diff --git a/drivers/video/bfin-t350mcqb-fb.c b/drivers/video/bfin-t350mcqb-fb.c
index c2ec3dcd..7a50272 100644
--- a/drivers/video/bfin-t350mcqb-fb.c
+++ b/drivers/video/bfin-t350mcqb-fb.c
@@ -420,7 +420,9 @@
 
 static int __devinit bfin_t350mcqb_probe(struct platform_device *pdev)
 {
+#ifndef NO_BL_SUPPORT
 	struct backlight_properties props;
+#endif
 	struct bfin_t350mcqbfb_info *info;
 	struct fb_info *fbinfo;
 	int ret;
@@ -550,7 +552,8 @@
 		printk(KERN_ERR DRIVER_NAME
 			": unable to register backlight.\n");
 		ret = -EINVAL;
-		goto out9;
+		unregister_framebuffer(fbinfo);
+		goto out8;
 	}
 
 	lcd_dev = lcd_device_register(DRIVER_NAME, NULL, &bfin_lcd_ops);
@@ -559,8 +562,6 @@
 
 	return 0;
 
-out9:
-	unregister_framebuffer(fbinfo);
 out8:
 	free_irq(info->irq, info);
 out7:
diff --git a/drivers/video/fb_defio.c b/drivers/video/fb_defio.c
index 1105a59..073c9b4 100644
--- a/drivers/video/fb_defio.c
+++ b/drivers/video/fb_defio.c
@@ -66,7 +66,7 @@
 	return 0;
 }
 
-int fb_deferred_io_fsync(struct file *file, struct dentry *dentry, int datasync)
+int fb_deferred_io_fsync(struct file *file, int datasync)
 {
 	struct fb_info *info = file->private_data;
 
diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c
index d4471b4..dce8c97 100644
--- a/drivers/video/s3fb.c
+++ b/drivers/video/s3fb.c
@@ -71,7 +71,8 @@
 			"S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX",
 			"S3 Plato/PX", "S3 Aurora64VP", "S3 Virge",
 			"S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX",
-			"S3 Virge/GX2", "S3 Virge/GX2P", "S3 Virge/GX2P"};
+			"S3 Virge/GX2", "S3 Virge/GX2P", "S3 Virge/GX2P",
+			"S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X"};
 
 #define CHIP_UNKNOWN		0x00
 #define CHIP_732_TRIO32		0x01
@@ -89,10 +90,14 @@
 #define CHIP_356_VIRGE_GX2	0x0D
 #define CHIP_357_VIRGE_GX2P	0x0E
 #define CHIP_359_VIRGE_GX2P	0x0F
+#define CHIP_360_TRIO3D_1X	0x10
+#define CHIP_362_TRIO3D_2X	0x11
+#define CHIP_368_TRIO3D_2X	0x12
 
 #define CHIP_XXX_TRIO		0x80
 #define CHIP_XXX_TRIO64V2_DXGX	0x81
 #define CHIP_XXX_VIRGE_DXGX	0x82
+#define CHIP_36X_TRIO3D_1X_2X	0x83
 
 #define CHIP_UNDECIDED_FLAG	0x80
 #define CHIP_MASK		0xFF
@@ -324,6 +329,7 @@
 
 static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
 {
+	struct s3fb_info *par = info->par;
 	u16 m, n, r;
 	u8 regval;
 	int rv;
@@ -339,7 +345,13 @@
 	vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
 
 	/* Set S3 clock registers */
-	vga_wseq(NULL, 0x12, ((n - 2) | (r << 5)));
+	if (par->chip == CHIP_360_TRIO3D_1X ||
+	    par->chip == CHIP_362_TRIO3D_2X ||
+	    par->chip == CHIP_368_TRIO3D_2X) {
+		vga_wseq(NULL, 0x12, (n - 2) | ((r & 3) << 6));	/* n and two bits of r */
+		vga_wseq(NULL, 0x29, r >> 2); /* remaining highest bit of r */
+	} else
+		vga_wseq(NULL, 0x12, (n - 2) | (r << 5));
 	vga_wseq(NULL, 0x13, m - 2);
 
 	udelay(1000);
@@ -456,7 +468,7 @@
 static int s3fb_set_par(struct fb_info *info)
 {
 	struct s3fb_info *par = info->par;
-	u32 value, mode, hmul, offset_value, screen_size, multiplex;
+	u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes;
 	u32 bpp = info->var.bits_per_pixel;
 
 	if (bpp != 0) {
@@ -518,7 +530,7 @@
 	svga_wcrt_mask(0x33, 0x00, 0x08); /* no DDR ?	*/
 	svga_wcrt_mask(0x43, 0x00, 0x01); /* no DDR ?	*/
 
-	svga_wcrt_mask(0x5D, 0x00, 0x28); // Clear strange HSlen bits
+	svga_wcrt_mask(0x5D, 0x00, 0x28); /* Clear strange HSlen bits */
 
 /*	svga_wcrt_mask(0x58, 0x03, 0x03); */
 
@@ -530,10 +542,14 @@
 	pr_debug("fb%d: offset register       : %d\n", info->node, offset_value);
 	svga_wcrt_multi(s3_offset_regs, offset_value);
 
-	vga_wcrt(NULL, 0x54, 0x18); /* M parameter */
-	vga_wcrt(NULL, 0x60, 0xff); /* N parameter */
-	vga_wcrt(NULL, 0x61, 0xff); /* L parameter */
-	vga_wcrt(NULL, 0x62, 0xff); /* L parameter */
+	if (par->chip != CHIP_360_TRIO3D_1X &&
+	    par->chip != CHIP_362_TRIO3D_2X &&
+	    par->chip != CHIP_368_TRIO3D_2X) {
+		vga_wcrt(NULL, 0x54, 0x18); /* M parameter */
+		vga_wcrt(NULL, 0x60, 0xff); /* N parameter */
+		vga_wcrt(NULL, 0x61, 0xff); /* L parameter */
+		vga_wcrt(NULL, 0x62, 0xff); /* L parameter */
+	}
 
 	vga_wcrt(NULL, 0x3A, 0x35);
 	svga_wattr(0x33, 0x00);
@@ -570,6 +586,16 @@
 		vga_wcrt(NULL, 0x66, 0x90);
 	}
 
+	if (par->chip == CHIP_360_TRIO3D_1X ||
+	    par->chip == CHIP_362_TRIO3D_2X ||
+	    par->chip == CHIP_368_TRIO3D_2X) {
+		dbytes = info->var.xres * ((bpp+7)/8);
+		vga_wcrt(NULL, 0x91, (dbytes + 7) / 8);
+		vga_wcrt(NULL, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80);
+
+		vga_wcrt(NULL, 0x66, 0x81);
+	}
+
 	svga_wcrt_mask(0x31, 0x00, 0x40);
 	multiplex = 0;
 	hmul = 1;
@@ -615,11 +641,13 @@
 		break;
 	case 3:
 		pr_debug("fb%d: 8 bit pseudocolor\n", info->node);
-		if (info->var.pixclock > 20000) {
-			svga_wcrt_mask(0x50, 0x00, 0x30);
+		svga_wcrt_mask(0x50, 0x00, 0x30);
+		if (info->var.pixclock > 20000 ||
+		    par->chip == CHIP_360_TRIO3D_1X ||
+		    par->chip == CHIP_362_TRIO3D_2X ||
+		    par->chip == CHIP_368_TRIO3D_2X)
 			svga_wcrt_mask(0x67, 0x00, 0xF0);
-		} else {
-			svga_wcrt_mask(0x50, 0x00, 0x30);
+		else {
 			svga_wcrt_mask(0x67, 0x10, 0xF0);
 			multiplex = 1;
 		}
@@ -634,7 +662,10 @@
 		} else {
 			svga_wcrt_mask(0x50, 0x10, 0x30);
 			svga_wcrt_mask(0x67, 0x30, 0xF0);
-			hmul = 2;
+			if (par->chip != CHIP_360_TRIO3D_1X &&
+			    par->chip != CHIP_362_TRIO3D_2X &&
+			    par->chip != CHIP_368_TRIO3D_2X)
+				hmul = 2;
 		}
 		break;
 	case 5:
@@ -647,7 +678,10 @@
 		} else {
 			svga_wcrt_mask(0x50, 0x10, 0x30);
 			svga_wcrt_mask(0x67, 0x50, 0xF0);
-			hmul = 2;
+			if (par->chip != CHIP_360_TRIO3D_1X &&
+			    par->chip != CHIP_362_TRIO3D_2X &&
+			    par->chip != CHIP_368_TRIO3D_2X)
+				hmul = 2;
 		}
 		break;
 	case 6:
@@ -866,6 +900,17 @@
 			return CHIP_385_VIRGE_GX;
 	}
 
+	if (chip == CHIP_36X_TRIO3D_1X_2X) {
+		switch (vga_rcrt(NULL, 0x2f)) {
+		case 0x00:
+			return CHIP_360_TRIO3D_1X;
+		case 0x01:
+			return CHIP_362_TRIO3D_2X;
+		case 0x02:
+			return CHIP_368_TRIO3D_2X;
+		}
+	}
+
 	return CHIP_UNKNOWN;
 }
 
@@ -930,17 +975,32 @@
 	vga_wcrt(NULL, 0x38, 0x48);
 	vga_wcrt(NULL, 0x39, 0xA5);
 
-	/* Find how many physical memory there is on card */
-	/* 0x36 register is accessible even if other registers are locked */
-	regval = vga_rcrt(NULL, 0x36);
-	info->screen_size = s3_memsizes[regval >> 5] << 10;
-	info->fix.smem_len = info->screen_size;
-
+	/* Identify chip type */
 	par->chip = id->driver_data & CHIP_MASK;
 	par->rev = vga_rcrt(NULL, 0x2f);
 	if (par->chip & CHIP_UNDECIDED_FLAG)
 		par->chip = s3_identification(par->chip);
 
+	/* Find how many physical memory there is on card */
+	/* 0x36 register is accessible even if other registers are locked */
+	regval = vga_rcrt(NULL, 0x36);
+	if (par->chip == CHIP_360_TRIO3D_1X ||
+	    par->chip == CHIP_362_TRIO3D_2X ||
+	    par->chip == CHIP_368_TRIO3D_2X) {
+		switch ((regval & 0xE0) >> 5) {
+		case 0: /* 8MB -- only 4MB usable for display */
+		case 1: /* 4MB with 32-bit bus */
+		case 2:	/* 4MB */
+			info->screen_size = 4 << 20;
+			break;
+		case 6: /* 2MB */
+			info->screen_size = 2 << 20;
+			break;
+		}
+	} else
+		info->screen_size = s3_memsizes[regval >> 5] << 10;
+	info->fix.smem_len = info->screen_size;
+
 	/* Find MCLK frequency */
 	regval = vga_rseq(NULL, 0x10);
 	par->mclk_freq = ((vga_rseq(NULL, 0x11) + 2) * 14318) / ((regval & 0x1F)  + 2);
@@ -1131,6 +1191,7 @@
 	{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_356_VIRGE_GX2},
 	{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_357_VIRGE_GX2P},
 	{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
+	{PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
 
 	{0, 0, 0, 0, 0, 0, 0}
 };
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c
index 2bc40e6..1082541 100644
--- a/drivers/video/via/viafbdev.c
+++ b/drivers/video/via/viafbdev.c
@@ -578,14 +578,9 @@
 		break;
 
 	case VIAFB_SET_GAMMA_LUT:
-		viafb_gamma_table = kmalloc(256 * sizeof(u32), GFP_KERNEL);
-		if (!viafb_gamma_table)
-			return -ENOMEM;
-		if (copy_from_user(viafb_gamma_table, argp,
-				256 * sizeof(u32))) {
-			kfree(viafb_gamma_table);
-			return -EFAULT;
-		}
+		viafb_gamma_table = memdup_user(argp, 256 * sizeof(u32));
+		if (IS_ERR(viafb_gamma_table))
+			return PTR_ERR(viafb_gamma_table);
 		viafb_set_gamma_table(viafb_bpp, viafb_gamma_table);
 		kfree(viafb_gamma_table);
 		break;
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 25b300e..2bedc6c 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -257,15 +257,13 @@
 	return total;
 }
 
-static int v9fs_file_fsync(struct file *filp, struct dentry *dentry,
-					int datasync)
+static int v9fs_file_fsync(struct file *filp, int datasync)
 {
 	struct p9_fid *fid;
 	struct p9_wstat wstat;
 	int retval;
 
-	P9_DPRINTK(P9_DEBUG_VFS, "filp %p dentry %p datasync %x\n", filp,
-						dentry, datasync);
+	P9_DPRINTK(P9_DEBUG_VFS, "filp %p datasync %x\n", filp, datasync);
 
 	fid = filp->private_data;
 	v9fs_blank_wstat(&wstat);
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 23aa52f..f4287e4 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -197,7 +197,7 @@
 	.read		= generic_read_dir,
 	.llseek		= generic_file_llseek,
 	.readdir	= adfs_readdir,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 };
 
 static int
diff --git a/fs/adfs/file.c b/fs/adfs/file.c
index 005ea34..a36da53 100644
--- a/fs/adfs/file.c
+++ b/fs/adfs/file.c
@@ -26,7 +26,7 @@
 	.read		= do_sync_read,
 	.aio_read	= generic_file_aio_read,
 	.mmap		= generic_file_mmap,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 	.write		= do_sync_write,
 	.aio_write	= generic_file_aio_write,
 	.splice_read	= generic_file_splice_read,
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index 0f5e309..6f850b0 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -322,8 +322,9 @@
 	if (error)
 		goto out;
 
+	/* XXX: this is missing some actual on-disk truncation.. */
 	if (ia_valid & ATTR_SIZE)
-		error = vmtruncate(inode, attr->ia_size);
+		error = simple_setsize(inode, attr->ia_size);
 
 	if (error)
 		goto out;
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 861dae6..f05b615 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -183,7 +183,7 @@
 
 void		affs_free_prealloc(struct inode *inode);
 extern void	affs_truncate(struct inode *);
-int		affs_file_fsync(struct file *, struct dentry *, int);
+int		affs_file_fsync(struct file *, int);
 
 /* dir.c */
 
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 184e55c..322710c 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -916,9 +916,9 @@
 	affs_free_prealloc(inode);
 }
 
-int affs_file_fsync(struct file *filp, struct dentry *dentry, int datasync)
+int affs_file_fsync(struct file *filp, int datasync)
 {
-	struct inode * inode = dentry->d_inode;
+	struct inode *inode = filp->f_mapping->host;
 	int ret, err;
 
 	ret = write_inode_now(inode, 0);
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index d70bbba..914d1c0 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -224,7 +224,7 @@
 		affs_brelse(bh);
 		inode = affs_iget(sb, ino);
 		if (IS_ERR(inode))
-			return ERR_PTR(PTR_ERR(inode));
+			return ERR_CAST(inode);
 	}
 	dentry->d_op = AFFS_SB(sb)->s_flags & SF_INTL ? &affs_intl_dentry_operations : &affs_dentry_operations;
 	d_add(dentry, inode);
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 807f284..5f679b7 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -740,7 +740,7 @@
 extern ssize_t afs_file_write(struct kiocb *, const struct iovec *,
 			      unsigned long, loff_t);
 extern int afs_writeback_all(struct afs_vnode *);
-extern int afs_fsync(struct file *, struct dentry *, int);
+extern int afs_fsync(struct file *, int);
 
 
 /*****************************************************************************/
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 3bed54a..3dab9e9 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -701,8 +701,9 @@
  * - the return status from this call provides a reliable indication of
  *   whether any write errors occurred for this process.
  */
-int afs_fsync(struct file *file, struct dentry *dentry, int datasync)
+int afs_fsync(struct file *file, int datasync)
 {
+	struct dentry *dentry = file->f_path.dentry;
 	struct afs_writeback *wb, *xwb;
 	struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode);
 	int ret;
diff --git a/fs/aio.c b/fs/aio.c
index 1cf12b3..1ccf25c 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -36,6 +36,7 @@
 #include <linux/blkdev.h>
 #include <linux/mempool.h>
 #include <linux/hash.h>
+#include <linux/compat.h>
 
 #include <asm/kmap_types.h>
 #include <asm/uaccess.h>
@@ -526,7 +527,7 @@
 
 		/* Complete the fput(s) */
 		if (req->ki_filp != NULL)
-			__fput(req->ki_filp);
+			fput(req->ki_filp);
 
 		/* Link the iocb into the context's free list */
 		spin_lock_irq(&ctx->ctx_lock);
@@ -559,11 +560,11 @@
 
 	/*
 	 * Try to optimize the aio and eventfd file* puts, by avoiding to
-	 * schedule work in case it is not __fput() time. In normal cases,
+	 * schedule work in case it is not final fput() time. In normal cases,
 	 * we would not be holding the last reference to the file*, so
 	 * this function will be executed w/out any aio kthread wakeup.
 	 */
-	if (unlikely(atomic_long_dec_and_test(&req->ki_filp->f_count))) {
+	if (unlikely(!fput_atomic(req->ki_filp))) {
 		get_ioctx(ctx);
 		spin_lock(&fput_lock);
 		list_add(&req->ki_list, &fput_head);
@@ -1384,13 +1385,22 @@
 	return ret;
 }
 
-static ssize_t aio_setup_vectored_rw(int type, struct kiocb *kiocb)
+static ssize_t aio_setup_vectored_rw(int type, struct kiocb *kiocb, bool compat)
 {
 	ssize_t ret;
 
-	ret = rw_copy_check_uvector(type, (struct iovec __user *)kiocb->ki_buf,
-				    kiocb->ki_nbytes, 1,
-				    &kiocb->ki_inline_vec, &kiocb->ki_iovec);
+#ifdef CONFIG_COMPAT
+	if (compat)
+		ret = compat_rw_copy_check_uvector(type,
+				(struct compat_iovec __user *)kiocb->ki_buf,
+				kiocb->ki_nbytes, 1, &kiocb->ki_inline_vec,
+				&kiocb->ki_iovec);
+	else
+#endif
+		ret = rw_copy_check_uvector(type,
+				(struct iovec __user *)kiocb->ki_buf,
+				kiocb->ki_nbytes, 1, &kiocb->ki_inline_vec,
+				&kiocb->ki_iovec);
 	if (ret < 0)
 		goto out;
 
@@ -1420,7 +1430,7 @@
  *	Performs the initial checks and aio retry method
  *	setup for the kiocb at the time of io submission.
  */
-static ssize_t aio_setup_iocb(struct kiocb *kiocb)
+static ssize_t aio_setup_iocb(struct kiocb *kiocb, bool compat)
 {
 	struct file *file = kiocb->ki_filp;
 	ssize_t ret = 0;
@@ -1469,7 +1479,7 @@
 		ret = security_file_permission(file, MAY_READ);
 		if (unlikely(ret))
 			break;
-		ret = aio_setup_vectored_rw(READ, kiocb);
+		ret = aio_setup_vectored_rw(READ, kiocb, compat);
 		if (ret)
 			break;
 		ret = -EINVAL;
@@ -1483,7 +1493,7 @@
 		ret = security_file_permission(file, MAY_WRITE);
 		if (unlikely(ret))
 			break;
-		ret = aio_setup_vectored_rw(WRITE, kiocb);
+		ret = aio_setup_vectored_rw(WRITE, kiocb, compat);
 		if (ret)
 			break;
 		ret = -EINVAL;
@@ -1548,7 +1558,8 @@
 }
 
 static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
-			 struct iocb *iocb, struct hlist_head *batch_hash)
+			 struct iocb *iocb, struct hlist_head *batch_hash,
+			 bool compat)
 {
 	struct kiocb *req;
 	struct file *file;
@@ -1609,7 +1620,7 @@
 	req->ki_left = req->ki_nbytes = iocb->aio_nbytes;
 	req->ki_opcode = iocb->aio_lio_opcode;
 
-	ret = aio_setup_iocb(req);
+	ret = aio_setup_iocb(req, compat);
 
 	if (ret)
 		goto out_put_req;
@@ -1637,20 +1648,8 @@
 	return ret;
 }
 
-/* sys_io_submit:
- *	Queue the nr iocbs pointed to by iocbpp for processing.  Returns
- *	the number of iocbs queued.  May return -EINVAL if the aio_context
- *	specified by ctx_id is invalid, if nr is < 0, if the iocb at
- *	*iocbpp[0] is not properly initialized, if the operation specified
- *	is invalid for the file descriptor in the iocb.  May fail with
- *	-EFAULT if any of the data structures point to invalid data.  May
- *	fail with -EBADF if the file descriptor specified in the first
- *	iocb is invalid.  May fail with -EAGAIN if insufficient resources
- *	are available to queue any iocbs.  Will return 0 if nr is 0.  Will
- *	fail with -ENOSYS if not implemented.
- */
-SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
-		struct iocb __user * __user *, iocbpp)
+long do_io_submit(aio_context_t ctx_id, long nr,
+		  struct iocb __user *__user *iocbpp, bool compat)
 {
 	struct kioctx *ctx;
 	long ret = 0;
@@ -1687,7 +1686,7 @@
 			break;
 		}
 
-		ret = io_submit_one(ctx, user_iocb, &tmp, batch_hash);
+		ret = io_submit_one(ctx, user_iocb, &tmp, batch_hash, compat);
 		if (ret)
 			break;
 	}
@@ -1697,6 +1696,24 @@
 	return i ? i : ret;
 }
 
+/* sys_io_submit:
+ *	Queue the nr iocbs pointed to by iocbpp for processing.  Returns
+ *	the number of iocbs queued.  May return -EINVAL if the aio_context
+ *	specified by ctx_id is invalid, if nr is < 0, if the iocb at
+ *	*iocbpp[0] is not properly initialized, if the operation specified
+ *	is invalid for the file descriptor in the iocb.  May fail with
+ *	-EFAULT if any of the data structures point to invalid data.  May
+ *	fail with -EBADF if the file descriptor specified in the first
+ *	iocb is invalid.  May fail with -EAGAIN if insufficient resources
+ *	are available to queue any iocbs.  Will return 0 if nr is 0.  Will
+ *	fail with -ENOSYS if not implemented.
+ */
+SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
+		struct iocb __user * __user *, iocbpp)
+{
+	return do_io_submit(ctx_id, nr, iocbpp, 0);
+}
+
 /* lookup_kiocb
  *	Finds a given iocb for cancellation.
  */
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 9bd4b38..e4b75d6 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -205,7 +205,7 @@
 	 * that it already _is_ on the dirty list.
 	 */
 	inode->i_state = I_DIRTY;
-	inode->i_mode = S_IFREG | S_IRUSR | S_IWUSR;
+	inode->i_mode = S_IRUSR | S_IWUSR;
 	inode->i_uid = current_fsuid();
 	inode->i_gid = current_fsgid();
 	inode->i_flags |= S_PRIVATE;
diff --git a/fs/attr.c b/fs/attr.c
index 0815e93..b4fa3b0 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -67,14 +67,14 @@
  * @offset:	the new size to assign to the inode
  * @Returns:	0 on success, -ve errno on failure
  *
+ * inode_newsize_ok must be called with i_mutex held.
+ *
  * inode_newsize_ok will check filesystem limits and ulimits to check that the
  * new inode size is within limits. inode_newsize_ok will also send SIGXFSZ
  * when necessary. Caller must not proceed with inode size change if failure is
  * returned. @inode must be a file (not directory), with appropriate
  * permissions to allow truncate (inode_newsize_ok does NOT check these
  * conditions).
- *
- * inode_newsize_ok must be called with i_mutex held.
  */
 int inode_newsize_ok(const struct inode *inode, loff_t offset)
 {
@@ -104,17 +104,25 @@
 }
 EXPORT_SYMBOL(inode_newsize_ok);
 
-int inode_setattr(struct inode * inode, struct iattr * attr)
+/**
+ * generic_setattr - copy simple metadata updates into the generic inode
+ * @inode:	the inode to be updated
+ * @attr:	the new attributes
+ *
+ * generic_setattr must be called with i_mutex held.
+ *
+ * generic_setattr updates the inode's metadata with that specified
+ * in attr. Noticably missing is inode size update, which is more complex
+ * as it requires pagecache updates. See simple_setsize.
+ *
+ * The inode is not marked as dirty after this operation. The rationale is
+ * that for "simple" filesystems, the struct inode is the inode storage.
+ * The caller is free to mark the inode dirty afterwards if needed.
+ */
+void generic_setattr(struct inode *inode, const struct iattr *attr)
 {
 	unsigned int ia_valid = attr->ia_valid;
 
-	if (ia_valid & ATTR_SIZE &&
-	    attr->ia_size != i_size_read(inode)) {
-		int error = vmtruncate(inode, attr->ia_size);
-		if (error)
-			return error;
-	}
-
 	if (ia_valid & ATTR_UID)
 		inode->i_uid = attr->ia_uid;
 	if (ia_valid & ATTR_GID)
@@ -135,6 +143,28 @@
 			mode &= ~S_ISGID;
 		inode->i_mode = mode;
 	}
+}
+EXPORT_SYMBOL(generic_setattr);
+
+/*
+ * note this function is deprecated, the new truncate sequence should be
+ * used instead -- see eg. simple_setsize, generic_setattr.
+ */
+int inode_setattr(struct inode *inode, const struct iattr *attr)
+{
+	unsigned int ia_valid = attr->ia_valid;
+
+	if (ia_valid & ATTR_SIZE &&
+	    attr->ia_size != i_size_read(inode)) {
+		int error;
+
+		error = vmtruncate(inode, attr->ia_size);
+		if (error)
+			return error;
+	}
+
+	generic_setattr(inode, attr);
+
 	mark_inode_dirty(inode);
 
 	return 0;
diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index 8713c7c..9a0520b 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -28,6 +28,7 @@
 static int autofs_root_ioctl(struct inode *, struct file *,unsigned int,unsigned long);
 
 const struct file_operations autofs_root_operations = {
+	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= autofs_root_readdir,
 	.ioctl		= autofs_root_ioctl,
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index d29b7f6..ba4a38b 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -95,7 +95,7 @@
  */
 static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *in)
 {
-	struct autofs_dev_ioctl tmp, *ads;
+	struct autofs_dev_ioctl tmp;
 
 	if (copy_from_user(&tmp, in, sizeof(tmp)))
 		return ERR_PTR(-EFAULT);
@@ -103,16 +103,7 @@
 	if (tmp.size < sizeof(tmp))
 		return ERR_PTR(-EINVAL);
 
-	ads = kmalloc(tmp.size, GFP_KERNEL);
-	if (!ads)
-		return ERR_PTR(-ENOMEM);
-
-	if (copy_from_user(ads, in, tmp.size)) {
-		kfree(ads);
-		return ERR_PTR(-EFAULT);
-	}
-
-	return ads;
+	return memdup_user(in, tmp.size);
 }
 
 static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)
@@ -736,11 +727,14 @@
 };
 
 static struct miscdevice _autofs_dev_ioctl_misc = {
-	.minor 		= MISC_DYNAMIC_MINOR,
+	.minor		= AUTOFS_MINOR,
 	.name  		= AUTOFS_DEVICE_NAME,
 	.fops  		= &_dev_ioctl_fops
 };
 
+MODULE_ALIAS_MISCDEV(AUTOFS_MINOR);
+MODULE_ALIAS("devname:autofs");
+
 /* Register/deregister misc character device */
 int autofs_dev_ioctl_init(void)
 {
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index a05287a..52e59bf 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -93,8 +93,7 @@
 	return -EIO;
 }
 
-static int bad_file_fsync(struct file *file, struct dentry *dentry,
-			int datasync)
+static int bad_file_fsync(struct file *file, int datasync)
 {
 	return -EIO;
 }
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 8f73841..d967e05 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -78,7 +78,7 @@
 const struct file_operations bfs_dir_operations = {
 	.read		= generic_read_dir,
 	.readdir	= bfs_readdir,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 	.llseek		= generic_file_llseek,
 };
 
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 26e5f50..7346c96 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -172,8 +172,9 @@
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
 
-	return blockdev_direct_IO_no_locking(rw, iocb, inode, I_BDEV(inode),
-				iov, offset, nr_segs, blkdev_get_blocks, NULL);
+	return blockdev_direct_IO_no_locking_newtrunc(rw, iocb, inode,
+				I_BDEV(inode), iov, offset, nr_segs,
+				blkdev_get_blocks, NULL);
 }
 
 int __sync_blockdev(struct block_device *bdev, int wait)
@@ -309,8 +310,8 @@
 			struct page **pagep, void **fsdata)
 {
 	*pagep = NULL;
-	return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-				blkdev_get_block);
+	return block_write_begin_newtrunc(file, mapping, pos, len, flags,
+				pagep, fsdata, blkdev_get_block);
 }
 
 static int blkdev_write_end(struct file *file, struct address_space *mapping,
@@ -358,12 +359,7 @@
 	return retval;
 }
 	
-/*
- *	Filp is never NULL; the only case when ->fsync() is called with
- *	NULL first argument is nfsd_sync_dir() and that's not a directory.
- */
- 
-int blkdev_fsync(struct file *filp, struct dentry *dentry, int datasync)
+int blkdev_fsync(struct file *filp, int datasync)
 {
 	struct inode *bd_inode = filp->f_mapping->host;
 	struct block_device *bdev = I_BDEV(bd_inode);
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 462859a3..7ec1409 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -377,6 +377,7 @@
 				if (!list_empty(&worker->pending) ||
 				    !list_empty(&worker->prio_pending)) {
 					spin_unlock_irq(&worker->lock);
+					set_current_state(TASK_RUNNING);
 					goto again;
 				}
 
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 7a4dee1..6ad63f1 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -137,8 +137,8 @@
 	 * of extent items we've reserved metadata for.
 	 */
 	spinlock_t accounting_lock;
+	atomic_t outstanding_extents;
 	int reserved_extents;
-	int outstanding_extents;
 
 	/*
 	 * ordered_data_close is set by truncate when a file that used
@@ -151,6 +151,7 @@
 	 * of these.
 	 */
 	unsigned ordered_data_close:1;
+	unsigned orphan_meta_reserved:1;
 	unsigned dummy_inode:1;
 
 	/*
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 6795a71..0d1d966 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -280,7 +280,8 @@
 static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
 				       struct btrfs_root *root,
 				       struct extent_buffer *buf,
-				       struct extent_buffer *cow)
+				       struct extent_buffer *cow,
+				       int *last_ref)
 {
 	u64 refs;
 	u64 owner;
@@ -366,6 +367,7 @@
 			BUG_ON(ret);
 		}
 		clean_tree_block(trans, root, buf);
+		*last_ref = 1;
 	}
 	return 0;
 }
@@ -392,6 +394,7 @@
 	struct btrfs_disk_key disk_key;
 	struct extent_buffer *cow;
 	int level;
+	int last_ref = 0;
 	int unlock_orig = 0;
 	u64 parent_start;
 
@@ -442,7 +445,10 @@
 			    (unsigned long)btrfs_header_fsid(cow),
 			    BTRFS_FSID_SIZE);
 
-	update_ref_for_cow(trans, root, buf, cow);
+	update_ref_for_cow(trans, root, buf, cow, &last_ref);
+
+	if (root->ref_cows)
+		btrfs_reloc_cow_block(trans, root, buf, cow);
 
 	if (buf == root->node) {
 		WARN_ON(parent && parent != buf);
@@ -457,8 +463,8 @@
 		extent_buffer_get(cow);
 		spin_unlock(&root->node_lock);
 
-		btrfs_free_tree_block(trans, root, buf->start, buf->len,
-				parent_start, root->root_key.objectid, level);
+		btrfs_free_tree_block(trans, root, buf, parent_start,
+				      last_ref);
 		free_extent_buffer(buf);
 		add_root_to_dirty_list(root);
 	} else {
@@ -473,8 +479,8 @@
 		btrfs_set_node_ptr_generation(parent, parent_slot,
 					      trans->transid);
 		btrfs_mark_buffer_dirty(parent);
-		btrfs_free_tree_block(trans, root, buf->start, buf->len,
-				parent_start, root->root_key.objectid, level);
+		btrfs_free_tree_block(trans, root, buf, parent_start,
+				      last_ref);
 	}
 	if (unlock_orig)
 		btrfs_tree_unlock(buf);
@@ -949,6 +955,22 @@
 	return bin_search(eb, key, level, slot);
 }
 
+static void root_add_used(struct btrfs_root *root, u32 size)
+{
+	spin_lock(&root->accounting_lock);
+	btrfs_set_root_used(&root->root_item,
+			    btrfs_root_used(&root->root_item) + size);
+	spin_unlock(&root->accounting_lock);
+}
+
+static void root_sub_used(struct btrfs_root *root, u32 size)
+{
+	spin_lock(&root->accounting_lock);
+	btrfs_set_root_used(&root->root_item,
+			    btrfs_root_used(&root->root_item) - size);
+	spin_unlock(&root->accounting_lock);
+}
+
 /* given a node and slot number, this reads the blocks it points to.  The
  * extent buffer is returned with a reference taken (but unlocked).
  * NULL is returned on error.
@@ -1019,7 +1041,11 @@
 		btrfs_tree_lock(child);
 		btrfs_set_lock_blocking(child);
 		ret = btrfs_cow_block(trans, root, child, mid, 0, &child);
-		BUG_ON(ret);
+		if (ret) {
+			btrfs_tree_unlock(child);
+			free_extent_buffer(child);
+			goto enospc;
+		}
 
 		spin_lock(&root->node_lock);
 		root->node = child;
@@ -1034,11 +1060,12 @@
 		btrfs_tree_unlock(mid);
 		/* once for the path */
 		free_extent_buffer(mid);
-		ret = btrfs_free_tree_block(trans, root, mid->start, mid->len,
-					    0, root->root_key.objectid, level);
+
+		root_sub_used(root, mid->len);
+		btrfs_free_tree_block(trans, root, mid, 0, 1);
 		/* once for the root ptr */
 		free_extent_buffer(mid);
-		return ret;
+		return 0;
 	}
 	if (btrfs_header_nritems(mid) >
 	    BTRFS_NODEPTRS_PER_BLOCK(root) / 4)
@@ -1088,23 +1115,16 @@
 		if (wret < 0 && wret != -ENOSPC)
 			ret = wret;
 		if (btrfs_header_nritems(right) == 0) {
-			u64 bytenr = right->start;
-			u32 blocksize = right->len;
-
 			clean_tree_block(trans, root, right);
 			btrfs_tree_unlock(right);
-			free_extent_buffer(right);
-			right = NULL;
 			wret = del_ptr(trans, root, path, level + 1, pslot +
 				       1);
 			if (wret)
 				ret = wret;
-			wret = btrfs_free_tree_block(trans, root,
-						     bytenr, blocksize, 0,
-						     root->root_key.objectid,
-						     level);
-			if (wret)
-				ret = wret;
+			root_sub_used(root, right->len);
+			btrfs_free_tree_block(trans, root, right, 0, 1);
+			free_extent_buffer(right);
+			right = NULL;
 		} else {
 			struct btrfs_disk_key right_key;
 			btrfs_node_key(right, &right_key, 0);
@@ -1136,21 +1156,15 @@
 		BUG_ON(wret == 1);
 	}
 	if (btrfs_header_nritems(mid) == 0) {
-		/* we've managed to empty the middle node, drop it */
-		u64 bytenr = mid->start;
-		u32 blocksize = mid->len;
-
 		clean_tree_block(trans, root, mid);
 		btrfs_tree_unlock(mid);
-		free_extent_buffer(mid);
-		mid = NULL;
 		wret = del_ptr(trans, root, path, level + 1, pslot);
 		if (wret)
 			ret = wret;
-		wret = btrfs_free_tree_block(trans, root, bytenr, blocksize,
-					 0, root->root_key.objectid, level);
-		if (wret)
-			ret = wret;
+		root_sub_used(root, mid->len);
+		btrfs_free_tree_block(trans, root, mid, 0, 1);
+		free_extent_buffer(mid);
+		mid = NULL;
 	} else {
 		/* update the parent key to reflect our changes */
 		struct btrfs_disk_key mid_key;
@@ -1590,7 +1604,7 @@
 	btrfs_release_path(NULL, p);
 
 	ret = -EAGAIN;
-	tmp = read_tree_block(root, blocknr, blocksize, gen);
+	tmp = read_tree_block(root, blocknr, blocksize, 0);
 	if (tmp) {
 		/*
 		 * If the read above didn't mark this buffer up to date,
@@ -1740,7 +1754,6 @@
 					      p->nodes[level + 1],
 					      p->slots[level + 1], &b);
 			if (err) {
-				free_extent_buffer(b);
 				ret = err;
 				goto done;
 			}
@@ -2076,6 +2089,8 @@
 	if (IS_ERR(c))
 		return PTR_ERR(c);
 
+	root_add_used(root, root->nodesize);
+
 	memset_extent_buffer(c, 0, 0, sizeof(struct btrfs_header));
 	btrfs_set_header_nritems(c, 1);
 	btrfs_set_header_level(c, level);
@@ -2134,6 +2149,7 @@
 	int nritems;
 
 	BUG_ON(!path->nodes[level]);
+	btrfs_assert_tree_locked(path->nodes[level]);
 	lower = path->nodes[level];
 	nritems = btrfs_header_nritems(lower);
 	BUG_ON(slot > nritems);
@@ -2202,6 +2218,8 @@
 	if (IS_ERR(split))
 		return PTR_ERR(split);
 
+	root_add_used(root, root->nodesize);
+
 	memset_extent_buffer(split, 0, 0, sizeof(struct btrfs_header));
 	btrfs_set_header_level(split, btrfs_header_level(c));
 	btrfs_set_header_bytenr(split, split->start);
@@ -2415,6 +2433,9 @@
 
 	if (left_nritems)
 		btrfs_mark_buffer_dirty(left);
+	else
+		clean_tree_block(trans, root, left);
+
 	btrfs_mark_buffer_dirty(right);
 
 	btrfs_item_key(right, &disk_key, 0);
@@ -2660,6 +2681,8 @@
 	btrfs_mark_buffer_dirty(left);
 	if (right_nritems)
 		btrfs_mark_buffer_dirty(right);
+	else
+		clean_tree_block(trans, root, right);
 
 	btrfs_item_key(right, &disk_key, 0);
 	wret = fixup_low_keys(trans, root, path, &disk_key, 1);
@@ -2669,8 +2692,6 @@
 	/* then fixup the leaf pointer in the path */
 	if (path->slots[0] < push_items) {
 		path->slots[0] += old_left_nritems;
-		if (btrfs_header_nritems(path->nodes[0]) == 0)
-			clean_tree_block(trans, root, path->nodes[0]);
 		btrfs_tree_unlock(path->nodes[0]);
 		free_extent_buffer(path->nodes[0]);
 		path->nodes[0] = left;
@@ -2932,10 +2953,10 @@
 	right = btrfs_alloc_free_block(trans, root, root->leafsize, 0,
 					root->root_key.objectid,
 					&disk_key, 0, l->start, 0);
-	if (IS_ERR(right)) {
-		BUG_ON(1);
+	if (IS_ERR(right))
 		return PTR_ERR(right);
-	}
+
+	root_add_used(root, root->leafsize);
 
 	memset_extent_buffer(right, 0, 0, sizeof(struct btrfs_header));
 	btrfs_set_header_bytenr(right, right->start);
@@ -3054,7 +3075,8 @@
 
 	btrfs_set_path_blocking(path);
 	ret = split_leaf(trans, root, &key, path, ins_len, 1);
-	BUG_ON(ret);
+	if (ret)
+		goto err;
 
 	path->keep_locks = 0;
 	btrfs_unlock_up_safe(path, 1);
@@ -3796,9 +3818,10 @@
 	 */
 	btrfs_unlock_up_safe(path, 0);
 
-	ret = btrfs_free_tree_block(trans, root, leaf->start, leaf->len,
-				    0, root->root_key.objectid, 0);
-	return ret;
+	root_sub_used(root, leaf->len);
+
+	btrfs_free_tree_block(trans, root, leaf, 0, 1);
+	return 0;
 }
 /*
  * delete the item at the leaf level in path.  If that empties
@@ -3865,6 +3888,8 @@
 		if (leaf == root->node) {
 			btrfs_set_header_level(leaf, 0);
 		} else {
+			btrfs_set_path_blocking(path);
+			clean_tree_block(trans, root, leaf);
 			ret = btrfs_del_leaf(trans, root, path, leaf);
 			BUG_ON(ret);
 		}
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 746a724..29c2009 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -34,6 +34,7 @@
 
 struct btrfs_trans_handle;
 struct btrfs_transaction;
+struct btrfs_pending_snapshot;
 extern struct kmem_cache *btrfs_trans_handle_cachep;
 extern struct kmem_cache *btrfs_transaction_cachep;
 extern struct kmem_cache *btrfs_bit_radix_cachep;
@@ -663,6 +664,7 @@
 #define BTRFS_BLOCK_GROUP_RAID1    (1 << 4)
 #define BTRFS_BLOCK_GROUP_DUP	   (1 << 5)
 #define BTRFS_BLOCK_GROUP_RAID10   (1 << 6)
+#define BTRFS_NR_RAID_TYPES	   5
 
 struct btrfs_block_group_item {
 	__le64 used;
@@ -674,42 +676,46 @@
 	u64 flags;
 
 	u64 total_bytes;	/* total bytes in the space */
-	u64 bytes_used;		/* total bytes used on disk */
+	u64 bytes_used;		/* total bytes used,
+				   this does't take mirrors into account */
 	u64 bytes_pinned;	/* total bytes pinned, will be freed when the
 				   transaction finishes */
 	u64 bytes_reserved;	/* total bytes the allocator has reserved for
 				   current allocations */
 	u64 bytes_readonly;	/* total bytes that are read only */
-	u64 bytes_super;	/* total bytes reserved for the super blocks */
-	u64 bytes_root;		/* the number of bytes needed to commit a
-				   transaction */
+
 	u64 bytes_may_use;	/* number of bytes that may be used for
 				   delalloc/allocations */
-	u64 bytes_delalloc;	/* number of bytes currently reserved for
-				   delayed allocation */
+	u64 disk_used;		/* total bytes used on disk */
 
 	int full;		/* indicates that we cannot allocate any more
 				   chunks for this space */
 	int force_alloc;	/* set if we need to force a chunk alloc for
 				   this space */
-	int force_delalloc;	/* make people start doing filemap_flush until
-				   we're under a threshold */
 
 	struct list_head list;
 
-	/* for controlling how we free up space for allocations */
-	wait_queue_head_t allocate_wait;
-	wait_queue_head_t flush_wait;
-	int allocating_chunk;
-	int flushing;
-
 	/* for block groups in our same type */
-	struct list_head block_groups;
+	struct list_head block_groups[BTRFS_NR_RAID_TYPES];
 	spinlock_t lock;
 	struct rw_semaphore groups_sem;
 	atomic_t caching_threads;
 };
 
+struct btrfs_block_rsv {
+	u64 size;
+	u64 reserved;
+	u64 freed[2];
+	struct btrfs_space_info *space_info;
+	struct list_head list;
+	spinlock_t lock;
+	atomic_t usage;
+	unsigned int priority:8;
+	unsigned int durable:1;
+	unsigned int refill_used:1;
+	unsigned int full:1;
+};
+
 /*
  * free clusters are used to claim free space in relatively large chunks,
  * allowing us to do less seeky writes.  They are used for all metadata
@@ -760,6 +766,7 @@
 	spinlock_t lock;
 	u64 pinned;
 	u64 reserved;
+	u64 reserved_pinned;
 	u64 bytes_super;
 	u64 flags;
 	u64 sectorsize;
@@ -825,6 +832,22 @@
 	/* logical->physical extent mapping */
 	struct btrfs_mapping_tree mapping_tree;
 
+	/* block reservation for extent, checksum and root tree */
+	struct btrfs_block_rsv global_block_rsv;
+	/* block reservation for delay allocation */
+	struct btrfs_block_rsv delalloc_block_rsv;
+	/* block reservation for metadata operations */
+	struct btrfs_block_rsv trans_block_rsv;
+	/* block reservation for chunk tree */
+	struct btrfs_block_rsv chunk_block_rsv;
+
+	struct btrfs_block_rsv empty_block_rsv;
+
+	/* list of block reservations that cross multiple transactions */
+	struct list_head durable_block_rsv_list;
+
+	struct mutex durable_block_rsv_mutex;
+
 	u64 generation;
 	u64 last_trans_committed;
 
@@ -927,7 +950,6 @@
 	struct btrfs_workers endio_meta_write_workers;
 	struct btrfs_workers endio_write_workers;
 	struct btrfs_workers submit_workers;
-	struct btrfs_workers enospc_workers;
 	/*
 	 * fixup workers take dirty pages that didn't properly go through
 	 * the cow mechanism and make them safe to write.  It happens
@@ -943,6 +965,7 @@
 	int do_barriers;
 	int closing;
 	int log_root_recovering;
+	int enospc_unlink;
 
 	u64 total_pinned;
 
@@ -1012,6 +1035,9 @@
 	struct completion kobj_unregister;
 	struct mutex objectid_mutex;
 
+	spinlock_t accounting_lock;
+	struct btrfs_block_rsv *block_rsv;
+
 	struct mutex log_mutex;
 	wait_queue_head_t log_writer_wait;
 	wait_queue_head_t log_commit_wait[2];
@@ -1043,7 +1069,6 @@
 	int ref_cows;
 	int track_dirty;
 	int in_radix;
-	int clean_orphans;
 
 	u64 defrag_trans_start;
 	struct btrfs_key defrag_progress;
@@ -1057,8 +1082,11 @@
 
 	struct list_head root_list;
 
-	spinlock_t list_lock;
+	spinlock_t orphan_lock;
 	struct list_head orphan_list;
+	struct btrfs_block_rsv *orphan_block_rsv;
+	int orphan_item_inserted;
+	int orphan_cleanup_state;
 
 	spinlock_t inode_lock;
 	/* red-black tree that keeps track of in-memory inodes */
@@ -1965,6 +1993,9 @@
 int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root, unsigned long count);
 int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len);
+int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
+			     struct btrfs_root *root, u64 bytenr,
+			     u64 num_bytes, u64 *refs, u64 *flags);
 int btrfs_pin_extent(struct btrfs_root *root,
 		     u64 bytenr, u64 num, int reserved);
 int btrfs_drop_leaf_ref(struct btrfs_trans_handle *trans,
@@ -1984,10 +2015,10 @@
 					u64 parent, u64 root_objectid,
 					struct btrfs_disk_key *key, int level,
 					u64 hint, u64 empty_size);
-int btrfs_free_tree_block(struct btrfs_trans_handle *trans,
-			  struct btrfs_root *root,
-			  u64 bytenr, u32 blocksize,
-			  u64 parent, u64 root_objectid, int level);
+void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
+			   struct btrfs_root *root,
+			   struct extent_buffer *buf,
+			   u64 parent, int last_ref);
 struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
 					    struct btrfs_root *root,
 					    u64 bytenr, u32 blocksize,
@@ -2041,27 +2072,49 @@
 			   u64 size);
 int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root, u64 group_start);
-int btrfs_prepare_block_group_relocation(struct btrfs_root *root,
-				struct btrfs_block_group_cache *group);
-
 u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags);
 void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde);
 void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
-
-int btrfs_reserve_metadata_space(struct btrfs_root *root, int num_items);
-int btrfs_unreserve_metadata_space(struct btrfs_root *root, int num_items);
-int btrfs_unreserve_metadata_for_delalloc(struct btrfs_root *root,
-					  struct inode *inode, int num_items);
-int btrfs_reserve_metadata_for_delalloc(struct btrfs_root *root,
-					struct inode *inode, int num_items);
-int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode,
-				u64 bytes);
-void btrfs_free_reserved_data_space(struct btrfs_root *root,
-				    struct inode *inode, u64 bytes);
-void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode,
-				 u64 bytes);
-void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode,
-			      u64 bytes);
+int btrfs_check_data_free_space(struct inode *inode, u64 bytes);
+void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes);
+int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans,
+				struct btrfs_root *root,
+				int num_items, int *retries);
+void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans,
+				struct btrfs_root *root);
+int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans,
+				  struct inode *inode);
+void btrfs_orphan_release_metadata(struct inode *inode);
+int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans,
+				struct btrfs_pending_snapshot *pending);
+int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes);
+void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes);
+int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes);
+void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes);
+void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv);
+struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root);
+void btrfs_free_block_rsv(struct btrfs_root *root,
+			  struct btrfs_block_rsv *rsv);
+void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info,
+				 struct btrfs_block_rsv *rsv);
+int btrfs_block_rsv_add(struct btrfs_trans_handle *trans,
+			struct btrfs_root *root,
+			struct btrfs_block_rsv *block_rsv,
+			u64 num_bytes, int *retries);
+int btrfs_block_rsv_check(struct btrfs_trans_handle *trans,
+			  struct btrfs_root *root,
+			  struct btrfs_block_rsv *block_rsv,
+			  u64 min_reserved, int min_factor);
+int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
+			    struct btrfs_block_rsv *dst_rsv,
+			    u64 num_bytes);
+void btrfs_block_rsv_release(struct btrfs_root *root,
+			     struct btrfs_block_rsv *block_rsv,
+			     u64 num_bytes);
+int btrfs_set_block_group_ro(struct btrfs_root *root,
+			     struct btrfs_block_group_cache *cache);
+int btrfs_set_block_group_rw(struct btrfs_root *root,
+			     struct btrfs_block_group_cache *cache);
 /* ctree.c */
 int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key,
 		     int level, int *slot);
@@ -2152,7 +2205,8 @@
 int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
 int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
 int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
-int btrfs_drop_snapshot(struct btrfs_root *root, int update_ref);
+int btrfs_drop_snapshot(struct btrfs_root *root,
+			struct btrfs_block_rsv *block_rsv, int update_ref);
 int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
 			struct btrfs_root *root,
 			struct extent_buffer *node,
@@ -2245,6 +2299,12 @@
 			   struct btrfs_root *root,
 			   const char *name, int name_len,
 			   u64 inode_objectid, u64 ref_objectid, u64 *index);
+struct btrfs_inode_ref *
+btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans,
+			struct btrfs_root *root,
+			struct btrfs_path *path,
+			const char *name, int name_len,
+			u64 inode_objectid, u64 ref_objectid, int mod);
 int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root,
 			     struct btrfs_path *path, u64 objectid);
@@ -2257,6 +2317,8 @@
 		    struct btrfs_root *root, u64 bytenr, u64 len);
 int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
 			  struct bio *bio, u32 *dst);
+int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
+			      struct bio *bio, u64 logical_offset, u32 *dst);
 int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root,
 			     u64 objectid, u64 pos,
@@ -2311,6 +2373,7 @@
 			       u32 min_type);
 
 int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput);
+int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput);
 int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
 			      struct extent_state **cached_state);
 int btrfs_writepages(struct address_space *mapping,
@@ -2349,10 +2412,20 @@
 int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode);
 int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
 void btrfs_orphan_cleanup(struct btrfs_root *root);
+void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans,
+				struct btrfs_pending_snapshot *pending,
+				u64 *bytes_to_reserve);
+void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans,
+				struct btrfs_pending_snapshot *pending);
+void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
+			      struct btrfs_root *root);
 int btrfs_cont_expand(struct inode *inode, loff_t size);
 int btrfs_invalidate_inodes(struct btrfs_root *root);
 void btrfs_add_delayed_iput(struct inode *inode);
 void btrfs_run_delayed_iputs(struct btrfs_root *root);
+int btrfs_prealloc_file_range(struct inode *inode, int mode,
+			      u64 start, u64 num_bytes, u64 min_size,
+			      loff_t actual_len, u64 *alloc_hint);
 extern const struct dentry_operations btrfs_dentry_operations;
 
 /* ioctl.c */
@@ -2361,7 +2434,7 @@
 void btrfs_inherit_iflags(struct inode *inode, struct inode *dir);
 
 /* file.c */
-int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync);
+int btrfs_sync_file(struct file *file, int datasync);
 int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
 			    int skip_pinned);
 int btrfs_check_file(struct btrfs_root *root, struct inode *inode);
@@ -2409,4 +2482,12 @@
 			    struct btrfs_root *root);
 int btrfs_recover_relocation(struct btrfs_root *root);
 int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len);
+void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
+			   struct btrfs_root *root, struct extent_buffer *buf,
+			   struct extent_buffer *cow);
+void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans,
+			      struct btrfs_pending_snapshot *pending,
+			      u64 *bytes_to_reserve);
+void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
+			      struct btrfs_pending_snapshot *pending);
 #endif
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 902ce50..e807b14 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -319,107 +319,6 @@
 }
 
 /*
- * helper function to lookup reference count and flags of extent.
- *
- * the head node for delayed ref is used to store the sum of all the
- * reference count modifications queued up in the rbtree. the head
- * node may also store the extent flags to set. This way you can check
- * to see what the reference count and extent flags would be if all of
- * the delayed refs are not processed.
- */
-int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root, u64 bytenr,
-			     u64 num_bytes, u64 *refs, u64 *flags)
-{
-	struct btrfs_delayed_ref_node *ref;
-	struct btrfs_delayed_ref_head *head;
-	struct btrfs_delayed_ref_root *delayed_refs;
-	struct btrfs_path *path;
-	struct btrfs_extent_item *ei;
-	struct extent_buffer *leaf;
-	struct btrfs_key key;
-	u32 item_size;
-	u64 num_refs;
-	u64 extent_flags;
-	int ret;
-
-	path = btrfs_alloc_path();
-	if (!path)
-		return -ENOMEM;
-
-	key.objectid = bytenr;
-	key.type = BTRFS_EXTENT_ITEM_KEY;
-	key.offset = num_bytes;
-	delayed_refs = &trans->transaction->delayed_refs;
-again:
-	ret = btrfs_search_slot(trans, root->fs_info->extent_root,
-				&key, path, 0, 0);
-	if (ret < 0)
-		goto out;
-
-	if (ret == 0) {
-		leaf = path->nodes[0];
-		item_size = btrfs_item_size_nr(leaf, path->slots[0]);
-		if (item_size >= sizeof(*ei)) {
-			ei = btrfs_item_ptr(leaf, path->slots[0],
-					    struct btrfs_extent_item);
-			num_refs = btrfs_extent_refs(leaf, ei);
-			extent_flags = btrfs_extent_flags(leaf, ei);
-		} else {
-#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
-			struct btrfs_extent_item_v0 *ei0;
-			BUG_ON(item_size != sizeof(*ei0));
-			ei0 = btrfs_item_ptr(leaf, path->slots[0],
-					     struct btrfs_extent_item_v0);
-			num_refs = btrfs_extent_refs_v0(leaf, ei0);
-			/* FIXME: this isn't correct for data */
-			extent_flags = BTRFS_BLOCK_FLAG_FULL_BACKREF;
-#else
-			BUG();
-#endif
-		}
-		BUG_ON(num_refs == 0);
-	} else {
-		num_refs = 0;
-		extent_flags = 0;
-		ret = 0;
-	}
-
-	spin_lock(&delayed_refs->lock);
-	ref = find_ref_head(&delayed_refs->root, bytenr, NULL);
-	if (ref) {
-		head = btrfs_delayed_node_to_head(ref);
-		if (!mutex_trylock(&head->mutex)) {
-			atomic_inc(&ref->refs);
-			spin_unlock(&delayed_refs->lock);
-
-			btrfs_release_path(root->fs_info->extent_root, path);
-
-			mutex_lock(&head->mutex);
-			mutex_unlock(&head->mutex);
-			btrfs_put_delayed_ref(ref);
-			goto again;
-		}
-		if (head->extent_op && head->extent_op->update_flags)
-			extent_flags |= head->extent_op->flags_to_set;
-		else
-			BUG_ON(num_refs == 0);
-
-		num_refs += ref->ref_mod;
-		mutex_unlock(&head->mutex);
-	}
-	WARN_ON(num_refs == 0);
-	if (refs)
-		*refs = num_refs;
-	if (flags)
-		*flags = extent_flags;
-out:
-	spin_unlock(&delayed_refs->lock);
-	btrfs_free_path(path);
-	return ret;
-}
-
-/*
  * helper function to update an extent delayed ref in the
  * rbtree.  existing and update must both have the same
  * bytenr and parent
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index f6fc67d..50e3cf9 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -167,9 +167,6 @@
 struct btrfs_delayed_ref_head *
 btrfs_find_delayed_ref_head(struct btrfs_trans_handle *trans, u64 bytenr);
 int btrfs_delayed_ref_pending(struct btrfs_trans_handle *trans, u64 bytenr);
-int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root, u64 bytenr,
-			     u64 num_bytes, u64 *refs, u64 *flags);
 int btrfs_update_delayed_ref(struct btrfs_trans_handle *trans,
 			  u64 bytenr, u64 num_bytes, u64 orig_parent,
 			  u64 parent, u64 orig_ref_root, u64 ref_root,
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index feca041..f3b287c 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -74,6 +74,11 @@
 	int rw;
 	int mirror_num;
 	unsigned long bio_flags;
+	/*
+	 * bio_offset is optional, can be used if the pages in the bio
+	 * can't tell us where in the file the bio should go
+	 */
+	u64 bio_offset;
 	struct btrfs_work work;
 };
 
@@ -534,7 +539,8 @@
 	async = container_of(work, struct  async_submit_bio, work);
 	fs_info = BTRFS_I(async->inode)->root->fs_info;
 	async->submit_bio_start(async->inode, async->rw, async->bio,
-			       async->mirror_num, async->bio_flags);
+			       async->mirror_num, async->bio_flags,
+			       async->bio_offset);
 }
 
 static void run_one_async_done(struct btrfs_work *work)
@@ -556,7 +562,8 @@
 		wake_up(&fs_info->async_submit_wait);
 
 	async->submit_bio_done(async->inode, async->rw, async->bio,
-			       async->mirror_num, async->bio_flags);
+			       async->mirror_num, async->bio_flags,
+			       async->bio_offset);
 }
 
 static void run_one_async_free(struct btrfs_work *work)
@@ -570,6 +577,7 @@
 int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
 			int rw, struct bio *bio, int mirror_num,
 			unsigned long bio_flags,
+			u64 bio_offset,
 			extent_submit_bio_hook_t *submit_bio_start,
 			extent_submit_bio_hook_t *submit_bio_done)
 {
@@ -592,6 +600,7 @@
 
 	async->work.flags = 0;
 	async->bio_flags = bio_flags;
+	async->bio_offset = bio_offset;
 
 	atomic_inc(&fs_info->nr_async_submits);
 
@@ -627,7 +636,8 @@
 
 static int __btree_submit_bio_start(struct inode *inode, int rw,
 				    struct bio *bio, int mirror_num,
-				    unsigned long bio_flags)
+				    unsigned long bio_flags,
+				    u64 bio_offset)
 {
 	/*
 	 * when we're called for a write, we're already in the async
@@ -638,7 +648,8 @@
 }
 
 static int __btree_submit_bio_done(struct inode *inode, int rw, struct bio *bio,
-				 int mirror_num, unsigned long bio_flags)
+				 int mirror_num, unsigned long bio_flags,
+				 u64 bio_offset)
 {
 	/*
 	 * when we're called for a write, we're already in the async
@@ -648,7 +659,8 @@
 }
 
 static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
-				 int mirror_num, unsigned long bio_flags)
+				 int mirror_num, unsigned long bio_flags,
+				 u64 bio_offset)
 {
 	int ret;
 
@@ -671,6 +683,7 @@
 	 */
 	return btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
 				   inode, rw, bio, mirror_num, 0,
+				   bio_offset,
 				   __btree_submit_bio_start,
 				   __btree_submit_bio_done);
 }
@@ -894,7 +907,8 @@
 	root->ref_cows = 0;
 	root->track_dirty = 0;
 	root->in_radix = 0;
-	root->clean_orphans = 0;
+	root->orphan_item_inserted = 0;
+	root->orphan_cleanup_state = 0;
 
 	root->fs_info = fs_info;
 	root->objectid = objectid;
@@ -903,13 +917,16 @@
 	root->name = NULL;
 	root->in_sysfs = 0;
 	root->inode_tree = RB_ROOT;
+	root->block_rsv = NULL;
+	root->orphan_block_rsv = NULL;
 
 	INIT_LIST_HEAD(&root->dirty_list);
 	INIT_LIST_HEAD(&root->orphan_list);
 	INIT_LIST_HEAD(&root->root_list);
 	spin_lock_init(&root->node_lock);
-	spin_lock_init(&root->list_lock);
+	spin_lock_init(&root->orphan_lock);
 	spin_lock_init(&root->inode_lock);
+	spin_lock_init(&root->accounting_lock);
 	mutex_init(&root->objectid_mutex);
 	mutex_init(&root->log_mutex);
 	init_waitqueue_head(&root->log_writer_wait);
@@ -968,42 +985,6 @@
 	return 0;
 }
 
-int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
-			     struct btrfs_fs_info *fs_info)
-{
-	struct extent_buffer *eb;
-	struct btrfs_root *log_root_tree = fs_info->log_root_tree;
-	u64 start = 0;
-	u64 end = 0;
-	int ret;
-
-	if (!log_root_tree)
-		return 0;
-
-	while (1) {
-		ret = find_first_extent_bit(&log_root_tree->dirty_log_pages,
-				0, &start, &end, EXTENT_DIRTY | EXTENT_NEW);
-		if (ret)
-			break;
-
-		clear_extent_bits(&log_root_tree->dirty_log_pages, start, end,
-				  EXTENT_DIRTY | EXTENT_NEW, GFP_NOFS);
-	}
-	eb = fs_info->log_root_tree->node;
-
-	WARN_ON(btrfs_header_level(eb) != 0);
-	WARN_ON(btrfs_header_nritems(eb) != 0);
-
-	ret = btrfs_free_reserved_extent(fs_info->tree_root,
-				eb->start, eb->len);
-	BUG_ON(ret);
-
-	free_extent_buffer(eb);
-	kfree(fs_info->log_root_tree);
-	fs_info->log_root_tree = NULL;
-	return 0;
-}
-
 static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans,
 					 struct btrfs_fs_info *fs_info)
 {
@@ -1191,19 +1172,23 @@
 	if (root)
 		return root;
 
-	ret = btrfs_find_orphan_item(fs_info->tree_root, location->objectid);
-	if (ret == 0)
-		ret = -ENOENT;
-	if (ret < 0)
-		return ERR_PTR(ret);
-
 	root = btrfs_read_fs_root_no_radix(fs_info->tree_root, location);
 	if (IS_ERR(root))
 		return root;
 
-	WARN_ON(btrfs_root_refs(&root->root_item) == 0);
 	set_anon_super(&root->anon_super, NULL);
 
+	if (btrfs_root_refs(&root->root_item) == 0) {
+		ret = -ENOENT;
+		goto fail;
+	}
+
+	ret = btrfs_find_orphan_item(fs_info->tree_root, location->objectid);
+	if (ret < 0)
+		goto fail;
+	if (ret == 0)
+		root->orphan_item_inserted = 1;
+
 	ret = radix_tree_preload(GFP_NOFS & ~__GFP_HIGHMEM);
 	if (ret)
 		goto fail;
@@ -1212,10 +1197,9 @@
 	ret = radix_tree_insert(&fs_info->fs_roots_radix,
 				(unsigned long)root->root_key.objectid,
 				root);
-	if (ret == 0) {
+	if (ret == 0)
 		root->in_radix = 1;
-		root->clean_orphans = 1;
-	}
+
 	spin_unlock(&fs_info->fs_roots_radix_lock);
 	radix_tree_preload_end();
 	if (ret) {
@@ -1461,10 +1445,6 @@
 	struct btrfs_root *root = arg;
 
 	do {
-		smp_mb();
-		if (root->fs_info->closing)
-			break;
-
 		vfs_check_frozen(root->fs_info->sb, SB_FREEZE_WRITE);
 
 		if (!(root->fs_info->sb->s_flags & MS_RDONLY) &&
@@ -1477,11 +1457,9 @@
 		if (freezing(current)) {
 			refrigerator();
 		} else {
-			smp_mb();
-			if (root->fs_info->closing)
-				break;
 			set_current_state(TASK_INTERRUPTIBLE);
-			schedule();
+			if (!kthread_should_stop())
+				schedule();
 			__set_current_state(TASK_RUNNING);
 		}
 	} while (!kthread_should_stop());
@@ -1493,36 +1471,40 @@
 	struct btrfs_root *root = arg;
 	struct btrfs_trans_handle *trans;
 	struct btrfs_transaction *cur;
+	u64 transid;
 	unsigned long now;
 	unsigned long delay;
 	int ret;
 
 	do {
-		smp_mb();
-		if (root->fs_info->closing)
-			break;
-
 		delay = HZ * 30;
 		vfs_check_frozen(root->fs_info->sb, SB_FREEZE_WRITE);
 		mutex_lock(&root->fs_info->transaction_kthread_mutex);
 
-		mutex_lock(&root->fs_info->trans_mutex);
+		spin_lock(&root->fs_info->new_trans_lock);
 		cur = root->fs_info->running_transaction;
 		if (!cur) {
-			mutex_unlock(&root->fs_info->trans_mutex);
+			spin_unlock(&root->fs_info->new_trans_lock);
 			goto sleep;
 		}
 
 		now = get_seconds();
-		if (now < cur->start_time || now - cur->start_time < 30) {
-			mutex_unlock(&root->fs_info->trans_mutex);
+		if (!cur->blocked &&
+		    (now < cur->start_time || now - cur->start_time < 30)) {
+			spin_unlock(&root->fs_info->new_trans_lock);
 			delay = HZ * 5;
 			goto sleep;
 		}
-		mutex_unlock(&root->fs_info->trans_mutex);
-		trans = btrfs_start_transaction(root, 1);
-		ret = btrfs_commit_transaction(trans, root);
+		transid = cur->transid;
+		spin_unlock(&root->fs_info->new_trans_lock);
 
+		trans = btrfs_join_transaction(root, 1);
+		if (transid == trans->transid) {
+			ret = btrfs_commit_transaction(trans, root);
+			BUG_ON(ret);
+		} else {
+			btrfs_end_transaction(trans, root);
+		}
 sleep:
 		wake_up_process(root->fs_info->cleaner_kthread);
 		mutex_unlock(&root->fs_info->transaction_kthread_mutex);
@@ -1530,10 +1512,10 @@
 		if (freezing(current)) {
 			refrigerator();
 		} else {
-			if (root->fs_info->closing)
-				break;
 			set_current_state(TASK_INTERRUPTIBLE);
-			schedule_timeout(delay);
+			if (!kthread_should_stop() &&
+			    !btrfs_transaction_blocked(root->fs_info))
+				schedule_timeout(delay);
 			__set_current_state(TASK_RUNNING);
 		}
 	} while (!kthread_should_stop());
@@ -1620,6 +1602,13 @@
 	INIT_LIST_HEAD(&fs_info->dirty_cowonly_roots);
 	INIT_LIST_HEAD(&fs_info->space_info);
 	btrfs_mapping_init(&fs_info->mapping_tree);
+	btrfs_init_block_rsv(&fs_info->global_block_rsv);
+	btrfs_init_block_rsv(&fs_info->delalloc_block_rsv);
+	btrfs_init_block_rsv(&fs_info->trans_block_rsv);
+	btrfs_init_block_rsv(&fs_info->chunk_block_rsv);
+	btrfs_init_block_rsv(&fs_info->empty_block_rsv);
+	INIT_LIST_HEAD(&fs_info->durable_block_rsv_list);
+	mutex_init(&fs_info->durable_block_rsv_mutex);
 	atomic_set(&fs_info->nr_async_submits, 0);
 	atomic_set(&fs_info->async_delalloc_pages, 0);
 	atomic_set(&fs_info->async_submit_draining, 0);
@@ -1759,9 +1748,6 @@
 			   min_t(u64, fs_devices->num_devices,
 			   fs_info->thread_pool_size),
 			   &fs_info->generic_worker);
-	btrfs_init_workers(&fs_info->enospc_workers, "enospc",
-			   fs_info->thread_pool_size,
-			   &fs_info->generic_worker);
 
 	/* a higher idle thresh on the submit workers makes it much more
 	 * likely that bios will be send down in a sane order to the
@@ -1809,7 +1795,6 @@
 	btrfs_start_workers(&fs_info->endio_meta_workers, 1);
 	btrfs_start_workers(&fs_info->endio_meta_write_workers, 1);
 	btrfs_start_workers(&fs_info->endio_write_workers, 1);
-	btrfs_start_workers(&fs_info->enospc_workers, 1);
 
 	fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
 	fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
@@ -1912,17 +1897,18 @@
 
 	csum_root->track_dirty = 1;
 
+	fs_info->generation = generation;
+	fs_info->last_trans_committed = generation;
+	fs_info->data_alloc_profile = (u64)-1;
+	fs_info->metadata_alloc_profile = (u64)-1;
+	fs_info->system_alloc_profile = fs_info->metadata_alloc_profile;
+
 	ret = btrfs_read_block_groups(extent_root);
 	if (ret) {
 		printk(KERN_ERR "Failed to read block groups: %d\n", ret);
 		goto fail_block_groups;
 	}
 
-	fs_info->generation = generation;
-	fs_info->last_trans_committed = generation;
-	fs_info->data_alloc_profile = (u64)-1;
-	fs_info->metadata_alloc_profile = (u64)-1;
-	fs_info->system_alloc_profile = fs_info->metadata_alloc_profile;
 	fs_info->cleaner_kthread = kthread_run(cleaner_kthread, tree_root,
 					       "btrfs-cleaner");
 	if (IS_ERR(fs_info->cleaner_kthread))
@@ -1977,6 +1963,9 @@
 	BUG_ON(ret);
 
 	if (!(sb->s_flags & MS_RDONLY)) {
+		ret = btrfs_cleanup_fs_roots(fs_info);
+		BUG_ON(ret);
+
 		ret = btrfs_recover_relocation(tree_root);
 		if (ret < 0) {
 			printk(KERN_WARNING
@@ -2040,7 +2029,6 @@
 	btrfs_stop_workers(&fs_info->endio_meta_write_workers);
 	btrfs_stop_workers(&fs_info->endio_write_workers);
 	btrfs_stop_workers(&fs_info->submit_workers);
-	btrfs_stop_workers(&fs_info->enospc_workers);
 fail_iput:
 	invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
 	iput(fs_info->btree_inode);
@@ -2405,11 +2393,11 @@
 	down_write(&root->fs_info->cleanup_work_sem);
 	up_write(&root->fs_info->cleanup_work_sem);
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_join_transaction(root, 1);
 	ret = btrfs_commit_transaction(trans, root);
 	BUG_ON(ret);
 	/* run commit again to drop the original snapshot */
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_join_transaction(root, 1);
 	btrfs_commit_transaction(trans, root);
 	ret = btrfs_write_and_wait_transaction(NULL, root);
 	BUG_ON(ret);
@@ -2426,15 +2414,15 @@
 	fs_info->closing = 1;
 	smp_mb();
 
-	kthread_stop(root->fs_info->transaction_kthread);
-	kthread_stop(root->fs_info->cleaner_kthread);
-
 	if (!(fs_info->sb->s_flags & MS_RDONLY)) {
 		ret =  btrfs_commit_super(root);
 		if (ret)
 			printk(KERN_ERR "btrfs: commit super ret %d\n", ret);
 	}
 
+	kthread_stop(root->fs_info->transaction_kthread);
+	kthread_stop(root->fs_info->cleaner_kthread);
+
 	fs_info->closing = 2;
 	smp_mb();
 
@@ -2473,7 +2461,6 @@
 	btrfs_stop_workers(&fs_info->endio_meta_write_workers);
 	btrfs_stop_workers(&fs_info->endio_write_workers);
 	btrfs_stop_workers(&fs_info->submit_workers);
-	btrfs_stop_workers(&fs_info->enospc_workers);
 
 	btrfs_close_devices(fs_info->fs_devices);
 	btrfs_mapping_tree_free(&fs_info->mapping_tree);
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index c958ecb..88e825a 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -87,7 +87,7 @@
 			int metadata);
 int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
 			int rw, struct bio *bio, int mirror_num,
-			unsigned long bio_flags,
+			unsigned long bio_flags, u64 bio_offset,
 			extent_submit_bio_hook_t *submit_bio_start,
 			extent_submit_bio_hook_t *submit_bio_done);
 
@@ -95,8 +95,6 @@
 unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info);
 int btrfs_write_tree_block(struct extent_buffer *buf);
 int btrfs_wait_tree_block_writeback(struct extent_buffer *buf);
-int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
-			     struct btrfs_fs_info *fs_info);
 int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
 			     struct btrfs_fs_info *fs_info);
 int btrfs_add_log_tree(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c6a4f45..b9080d7 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -35,10 +35,9 @@
 
 static int update_block_group(struct btrfs_trans_handle *trans,
 			      struct btrfs_root *root,
-			      u64 bytenr, u64 num_bytes, int alloc,
-			      int mark_free);
-static int update_reserved_extents(struct btrfs_block_group_cache *cache,
-				   u64 num_bytes, int reserve);
+			      u64 bytenr, u64 num_bytes, int alloc);
+static int update_reserved_bytes(struct btrfs_block_group_cache *cache,
+				 u64 num_bytes, int reserve, int sinfo);
 static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root,
 				u64 bytenr, u64 num_bytes, u64 parent,
@@ -61,12 +60,6 @@
 static int do_chunk_alloc(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *extent_root, u64 alloc_bytes,
 			  u64 flags, int force);
-static int pin_down_bytes(struct btrfs_trans_handle *trans,
-			  struct btrfs_root *root,
-			  struct btrfs_path *path,
-			  u64 bytenr, u64 num_bytes,
-			  int is_data, int reserved,
-			  struct extent_buffer **must_clean);
 static int find_next_key(struct btrfs_path *path, int level,
 			 struct btrfs_key *key);
 static void dump_space_info(struct btrfs_space_info *info, u64 bytes,
@@ -91,8 +84,12 @@
 
 void btrfs_put_block_group(struct btrfs_block_group_cache *cache)
 {
-	if (atomic_dec_and_test(&cache->count))
+	if (atomic_dec_and_test(&cache->count)) {
+		WARN_ON(cache->pinned > 0);
+		WARN_ON(cache->reserved > 0);
+		WARN_ON(cache->reserved_pinned > 0);
 		kfree(cache);
+	}
 }
 
 /*
@@ -319,7 +316,7 @@
 
 	exclude_super_stripes(extent_root, block_group);
 	spin_lock(&block_group->space_info->lock);
-	block_group->space_info->bytes_super += block_group->bytes_super;
+	block_group->space_info->bytes_readonly += block_group->bytes_super;
 	spin_unlock(&block_group->space_info->lock);
 
 	last = max_t(u64, block_group->key.objectid, BTRFS_SUPER_INFO_OFFSET);
@@ -507,6 +504,9 @@
 	struct list_head *head = &info->space_info;
 	struct btrfs_space_info *found;
 
+	flags &= BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_SYSTEM |
+		 BTRFS_BLOCK_GROUP_METADATA;
+
 	rcu_read_lock();
 	list_for_each_entry_rcu(found, head, list) {
 		if (found->flags == flags) {
@@ -610,6 +610,113 @@
 }
 
 /*
+ * helper function to lookup reference count and flags of extent.
+ *
+ * the head node for delayed ref is used to store the sum of all the
+ * reference count modifications queued up in the rbtree. the head
+ * node may also store the extent flags to set. This way you can check
+ * to see what the reference count and extent flags would be if all of
+ * the delayed refs are not processed.
+ */
+int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
+			     struct btrfs_root *root, u64 bytenr,
+			     u64 num_bytes, u64 *refs, u64 *flags)
+{
+	struct btrfs_delayed_ref_head *head;
+	struct btrfs_delayed_ref_root *delayed_refs;
+	struct btrfs_path *path;
+	struct btrfs_extent_item *ei;
+	struct extent_buffer *leaf;
+	struct btrfs_key key;
+	u32 item_size;
+	u64 num_refs;
+	u64 extent_flags;
+	int ret;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	key.objectid = bytenr;
+	key.type = BTRFS_EXTENT_ITEM_KEY;
+	key.offset = num_bytes;
+	if (!trans) {
+		path->skip_locking = 1;
+		path->search_commit_root = 1;
+	}
+again:
+	ret = btrfs_search_slot(trans, root->fs_info->extent_root,
+				&key, path, 0, 0);
+	if (ret < 0)
+		goto out_free;
+
+	if (ret == 0) {
+		leaf = path->nodes[0];
+		item_size = btrfs_item_size_nr(leaf, path->slots[0]);
+		if (item_size >= sizeof(*ei)) {
+			ei = btrfs_item_ptr(leaf, path->slots[0],
+					    struct btrfs_extent_item);
+			num_refs = btrfs_extent_refs(leaf, ei);
+			extent_flags = btrfs_extent_flags(leaf, ei);
+		} else {
+#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
+			struct btrfs_extent_item_v0 *ei0;
+			BUG_ON(item_size != sizeof(*ei0));
+			ei0 = btrfs_item_ptr(leaf, path->slots[0],
+					     struct btrfs_extent_item_v0);
+			num_refs = btrfs_extent_refs_v0(leaf, ei0);
+			/* FIXME: this isn't correct for data */
+			extent_flags = BTRFS_BLOCK_FLAG_FULL_BACKREF;
+#else
+			BUG();
+#endif
+		}
+		BUG_ON(num_refs == 0);
+	} else {
+		num_refs = 0;
+		extent_flags = 0;
+		ret = 0;
+	}
+
+	if (!trans)
+		goto out;
+
+	delayed_refs = &trans->transaction->delayed_refs;
+	spin_lock(&delayed_refs->lock);
+	head = btrfs_find_delayed_ref_head(trans, bytenr);
+	if (head) {
+		if (!mutex_trylock(&head->mutex)) {
+			atomic_inc(&head->node.refs);
+			spin_unlock(&delayed_refs->lock);
+
+			btrfs_release_path(root->fs_info->extent_root, path);
+
+			mutex_lock(&head->mutex);
+			mutex_unlock(&head->mutex);
+			btrfs_put_delayed_ref(&head->node);
+			goto again;
+		}
+		if (head->extent_op && head->extent_op->update_flags)
+			extent_flags |= head->extent_op->flags_to_set;
+		else
+			BUG_ON(num_refs == 0);
+
+		num_refs += head->node.ref_mod;
+		mutex_unlock(&head->mutex);
+	}
+	spin_unlock(&delayed_refs->lock);
+out:
+	WARN_ON(num_refs == 0);
+	if (refs)
+		*refs = num_refs;
+	if (flags)
+		*flags = extent_flags;
+out_free:
+	btrfs_free_path(path);
+	return ret;
+}
+
+/*
  * Back reference rules.  Back refs have three main goals:
  *
  * 1) differentiate between all holders of references to an extent so that
@@ -1871,7 +1978,6 @@
 	return ret;
 }
 
-
 /* helper function to actually process a single delayed ref entry */
 static int run_one_delayed_ref(struct btrfs_trans_handle *trans,
 			       struct btrfs_root *root,
@@ -1891,32 +1997,14 @@
 		BUG_ON(extent_op);
 		head = btrfs_delayed_node_to_head(node);
 		if (insert_reserved) {
-			int mark_free = 0;
-			struct extent_buffer *must_clean = NULL;
-
-			ret = pin_down_bytes(trans, root, NULL,
-					     node->bytenr, node->num_bytes,
-					     head->is_data, 1, &must_clean);
-			if (ret > 0)
-				mark_free = 1;
-
-			if (must_clean) {
-				clean_tree_block(NULL, root, must_clean);
-				btrfs_tree_unlock(must_clean);
-				free_extent_buffer(must_clean);
-			}
+			btrfs_pin_extent(root, node->bytenr,
+					 node->num_bytes, 1);
 			if (head->is_data) {
 				ret = btrfs_del_csums(trans, root,
 						      node->bytenr,
 						      node->num_bytes);
 				BUG_ON(ret);
 			}
-			if (mark_free) {
-				ret = btrfs_free_reserved_extent(root,
-							node->bytenr,
-							node->num_bytes);
-				BUG_ON(ret);
-			}
 		}
 		mutex_unlock(&head->mutex);
 		return 0;
@@ -2347,6 +2435,8 @@
 		ret = 0;
 out:
 	btrfs_free_path(path);
+	if (root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID)
+		WARN_ON(ret > 0);
 	return ret;
 }
 
@@ -2660,12 +2750,21 @@
 			     struct btrfs_space_info **space_info)
 {
 	struct btrfs_space_info *found;
+	int i;
+	int factor;
+
+	if (flags & (BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 |
+		     BTRFS_BLOCK_GROUP_RAID10))
+		factor = 2;
+	else
+		factor = 1;
 
 	found = __find_space_info(info, flags);
 	if (found) {
 		spin_lock(&found->lock);
 		found->total_bytes += total_bytes;
 		found->bytes_used += bytes_used;
+		found->disk_used += bytes_used * factor;
 		found->full = 0;
 		spin_unlock(&found->lock);
 		*space_info = found;
@@ -2675,18 +2774,20 @@
 	if (!found)
 		return -ENOMEM;
 
-	INIT_LIST_HEAD(&found->block_groups);
+	for (i = 0; i < BTRFS_NR_RAID_TYPES; i++)
+		INIT_LIST_HEAD(&found->block_groups[i]);
 	init_rwsem(&found->groups_sem);
-	init_waitqueue_head(&found->flush_wait);
-	init_waitqueue_head(&found->allocate_wait);
 	spin_lock_init(&found->lock);
-	found->flags = flags;
+	found->flags = flags & (BTRFS_BLOCK_GROUP_DATA |
+				BTRFS_BLOCK_GROUP_SYSTEM |
+				BTRFS_BLOCK_GROUP_METADATA);
 	found->total_bytes = total_bytes;
 	found->bytes_used = bytes_used;
+	found->disk_used = bytes_used * factor;
 	found->bytes_pinned = 0;
 	found->bytes_reserved = 0;
 	found->bytes_readonly = 0;
-	found->bytes_delalloc = 0;
+	found->bytes_may_use = 0;
 	found->full = 0;
 	found->force_alloc = 0;
 	*space_info = found;
@@ -2711,19 +2812,6 @@
 	}
 }
 
-static void set_block_group_readonly(struct btrfs_block_group_cache *cache)
-{
-	spin_lock(&cache->space_info->lock);
-	spin_lock(&cache->lock);
-	if (!cache->ro) {
-		cache->space_info->bytes_readonly += cache->key.offset -
-					btrfs_block_group_used(&cache->item);
-		cache->ro = 1;
-	}
-	spin_unlock(&cache->lock);
-	spin_unlock(&cache->space_info->lock);
-}
-
 u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags)
 {
 	u64 num_devices = root->fs_info->fs_devices->rw_devices;
@@ -2752,491 +2840,50 @@
 	return flags;
 }
 
-static u64 btrfs_get_alloc_profile(struct btrfs_root *root, u64 data)
+static u64 get_alloc_profile(struct btrfs_root *root, u64 flags)
 {
-	struct btrfs_fs_info *info = root->fs_info;
-	u64 alloc_profile;
+	if (flags & BTRFS_BLOCK_GROUP_DATA)
+		flags |= root->fs_info->avail_data_alloc_bits &
+			 root->fs_info->data_alloc_profile;
+	else if (flags & BTRFS_BLOCK_GROUP_SYSTEM)
+		flags |= root->fs_info->avail_system_alloc_bits &
+			 root->fs_info->system_alloc_profile;
+	else if (flags & BTRFS_BLOCK_GROUP_METADATA)
+		flags |= root->fs_info->avail_metadata_alloc_bits &
+			 root->fs_info->metadata_alloc_profile;
+	return btrfs_reduce_alloc_profile(root, flags);
+}
 
-	if (data) {
-		alloc_profile = info->avail_data_alloc_bits &
-			info->data_alloc_profile;
-		data = BTRFS_BLOCK_GROUP_DATA | alloc_profile;
-	} else if (root == root->fs_info->chunk_root) {
-		alloc_profile = info->avail_system_alloc_bits &
-			info->system_alloc_profile;
-		data = BTRFS_BLOCK_GROUP_SYSTEM | alloc_profile;
-	} else {
-		alloc_profile = info->avail_metadata_alloc_bits &
-			info->metadata_alloc_profile;
-		data = BTRFS_BLOCK_GROUP_METADATA | alloc_profile;
-	}
+static u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data)
+{
+	u64 flags;
 
-	return btrfs_reduce_alloc_profile(root, data);
+	if (data)
+		flags = BTRFS_BLOCK_GROUP_DATA;
+	else if (root == root->fs_info->chunk_root)
+		flags = BTRFS_BLOCK_GROUP_SYSTEM;
+	else
+		flags = BTRFS_BLOCK_GROUP_METADATA;
+
+	return get_alloc_profile(root, flags);
 }
 
 void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *inode)
 {
-	u64 alloc_target;
-
-	alloc_target = btrfs_get_alloc_profile(root, 1);
 	BTRFS_I(inode)->space_info = __find_space_info(root->fs_info,
-						       alloc_target);
-}
-
-static u64 calculate_bytes_needed(struct btrfs_root *root, int num_items)
-{
-	u64 num_bytes;
-	int level;
-
-	level = BTRFS_MAX_LEVEL - 2;
-	/*
-	 * NOTE: these calculations are absolutely the worst possible case.
-	 * This assumes that _every_ item we insert will require a new leaf, and
-	 * that the tree has grown to its maximum level size.
-	 */
-
-	/*
-	 * for every item we insert we could insert both an extent item and a
-	 * extent ref item.  Then for ever item we insert, we will need to cow
-	 * both the original leaf, plus the leaf to the left and right of it.
-	 *
-	 * Unless we are talking about the extent root, then we just want the
-	 * number of items * 2, since we just need the extent item plus its ref.
-	 */
-	if (root == root->fs_info->extent_root)
-		num_bytes = num_items * 2;
-	else
-		num_bytes = (num_items + (2 * num_items)) * 3;
-
-	/*
-	 * num_bytes is total number of leaves we could need times the leaf
-	 * size, and then for every leaf we could end up cow'ing 2 nodes per
-	 * level, down to the leaf level.
-	 */
-	num_bytes = (num_bytes * root->leafsize) +
-		(num_bytes * (level * 2)) * root->nodesize;
-
-	return num_bytes;
-}
-
-/*
- * Unreserve metadata space for delalloc.  If we have less reserved credits than
- * we have extents, this function does nothing.
- */
-int btrfs_unreserve_metadata_for_delalloc(struct btrfs_root *root,
-					  struct inode *inode, int num_items)
-{
-	struct btrfs_fs_info *info = root->fs_info;
-	struct btrfs_space_info *meta_sinfo;
-	u64 num_bytes;
-	u64 alloc_target;
-	bool bug = false;
-
-	/* get the space info for where the metadata will live */
-	alloc_target = btrfs_get_alloc_profile(root, 0);
-	meta_sinfo = __find_space_info(info, alloc_target);
-
-	num_bytes = calculate_bytes_needed(root->fs_info->extent_root,
-					   num_items);
-
-	spin_lock(&meta_sinfo->lock);
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
-	if (BTRFS_I(inode)->reserved_extents <=
-	    BTRFS_I(inode)->outstanding_extents) {
-		spin_unlock(&BTRFS_I(inode)->accounting_lock);
-		spin_unlock(&meta_sinfo->lock);
-		return 0;
-	}
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
-
-	BTRFS_I(inode)->reserved_extents -= num_items;
-	BUG_ON(BTRFS_I(inode)->reserved_extents < 0);
-
-	if (meta_sinfo->bytes_delalloc < num_bytes) {
-		bug = true;
-		meta_sinfo->bytes_delalloc = 0;
-	} else {
-		meta_sinfo->bytes_delalloc -= num_bytes;
-	}
-	spin_unlock(&meta_sinfo->lock);
-
-	BUG_ON(bug);
-
-	return 0;
-}
-
-static void check_force_delalloc(struct btrfs_space_info *meta_sinfo)
-{
-	u64 thresh;
-
-	thresh = meta_sinfo->bytes_used + meta_sinfo->bytes_reserved +
-		meta_sinfo->bytes_pinned + meta_sinfo->bytes_readonly +
-		meta_sinfo->bytes_super + meta_sinfo->bytes_root +
-		meta_sinfo->bytes_may_use;
-
-	thresh = meta_sinfo->total_bytes - thresh;
-	thresh *= 80;
-	do_div(thresh, 100);
-	if (thresh <= meta_sinfo->bytes_delalloc)
-		meta_sinfo->force_delalloc = 1;
-	else
-		meta_sinfo->force_delalloc = 0;
-}
-
-struct async_flush {
-	struct btrfs_root *root;
-	struct btrfs_space_info *info;
-	struct btrfs_work work;
-};
-
-static noinline void flush_delalloc_async(struct btrfs_work *work)
-{
-	struct async_flush *async;
-	struct btrfs_root *root;
-	struct btrfs_space_info *info;
-
-	async = container_of(work, struct async_flush, work);
-	root = async->root;
-	info = async->info;
-
-	btrfs_start_delalloc_inodes(root, 0);
-	wake_up(&info->flush_wait);
-	btrfs_wait_ordered_extents(root, 0, 0);
-
-	spin_lock(&info->lock);
-	info->flushing = 0;
-	spin_unlock(&info->lock);
-	wake_up(&info->flush_wait);
-
-	kfree(async);
-}
-
-static void wait_on_flush(struct btrfs_space_info *info)
-{
-	DEFINE_WAIT(wait);
-	u64 used;
-
-	while (1) {
-		prepare_to_wait(&info->flush_wait, &wait,
-				TASK_UNINTERRUPTIBLE);
-		spin_lock(&info->lock);
-		if (!info->flushing) {
-			spin_unlock(&info->lock);
-			break;
-		}
-
-		used = info->bytes_used + info->bytes_reserved +
-			info->bytes_pinned + info->bytes_readonly +
-			info->bytes_super + info->bytes_root +
-			info->bytes_may_use + info->bytes_delalloc;
-		if (used < info->total_bytes) {
-			spin_unlock(&info->lock);
-			break;
-		}
-		spin_unlock(&info->lock);
-		schedule();
-	}
-	finish_wait(&info->flush_wait, &wait);
-}
-
-static void flush_delalloc(struct btrfs_root *root,
-				 struct btrfs_space_info *info)
-{
-	struct async_flush *async;
-	bool wait = false;
-
-	spin_lock(&info->lock);
-
-	if (!info->flushing)
-		info->flushing = 1;
-	else
-		wait = true;
-
-	spin_unlock(&info->lock);
-
-	if (wait) {
-		wait_on_flush(info);
-		return;
-	}
-
-	async = kzalloc(sizeof(*async), GFP_NOFS);
-	if (!async)
-		goto flush;
-
-	async->root = root;
-	async->info = info;
-	async->work.func = flush_delalloc_async;
-
-	btrfs_queue_worker(&root->fs_info->enospc_workers,
-			   &async->work);
-	wait_on_flush(info);
-	return;
-
-flush:
-	btrfs_start_delalloc_inodes(root, 0);
-	btrfs_wait_ordered_extents(root, 0, 0);
-
-	spin_lock(&info->lock);
-	info->flushing = 0;
-	spin_unlock(&info->lock);
-	wake_up(&info->flush_wait);
-}
-
-static int maybe_allocate_chunk(struct btrfs_root *root,
-				 struct btrfs_space_info *info)
-{
-	struct btrfs_super_block *disk_super = &root->fs_info->super_copy;
-	struct btrfs_trans_handle *trans;
-	bool wait = false;
-	int ret = 0;
-	u64 min_metadata;
-	u64 free_space;
-
-	free_space = btrfs_super_total_bytes(disk_super);
-	/*
-	 * we allow the metadata to grow to a max of either 10gb or 5% of the
-	 * space in the volume.
-	 */
-	min_metadata = min((u64)10 * 1024 * 1024 * 1024,
-			     div64_u64(free_space * 5, 100));
-	if (info->total_bytes >= min_metadata) {
-		spin_unlock(&info->lock);
-		return 0;
-	}
-
-	if (info->full) {
-		spin_unlock(&info->lock);
-		return 0;
-	}
-
-	if (!info->allocating_chunk) {
-		info->force_alloc = 1;
-		info->allocating_chunk = 1;
-	} else {
-		wait = true;
-	}
-
-	spin_unlock(&info->lock);
-
-	if (wait) {
-		wait_event(info->allocate_wait,
-			   !info->allocating_chunk);
-		return 1;
-	}
-
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	ret = do_chunk_alloc(trans, root->fs_info->extent_root,
-			     4096 + 2 * 1024 * 1024,
-			     info->flags, 0);
-	btrfs_end_transaction(trans, root);
-	if (ret)
-		goto out;
-out:
-	spin_lock(&info->lock);
-	info->allocating_chunk = 0;
-	spin_unlock(&info->lock);
-	wake_up(&info->allocate_wait);
-
-	if (ret)
-		return 0;
-	return 1;
-}
-
-/*
- * Reserve metadata space for delalloc.
- */
-int btrfs_reserve_metadata_for_delalloc(struct btrfs_root *root,
-					struct inode *inode, int num_items)
-{
-	struct btrfs_fs_info *info = root->fs_info;
-	struct btrfs_space_info *meta_sinfo;
-	u64 num_bytes;
-	u64 used;
-	u64 alloc_target;
-	int flushed = 0;
-	int force_delalloc;
-
-	/* get the space info for where the metadata will live */
-	alloc_target = btrfs_get_alloc_profile(root, 0);
-	meta_sinfo = __find_space_info(info, alloc_target);
-
-	num_bytes = calculate_bytes_needed(root->fs_info->extent_root,
-					   num_items);
-again:
-	spin_lock(&meta_sinfo->lock);
-
-	force_delalloc = meta_sinfo->force_delalloc;
-
-	if (unlikely(!meta_sinfo->bytes_root))
-		meta_sinfo->bytes_root = calculate_bytes_needed(root, 6);
-
-	if (!flushed)
-		meta_sinfo->bytes_delalloc += num_bytes;
-
-	used = meta_sinfo->bytes_used + meta_sinfo->bytes_reserved +
-		meta_sinfo->bytes_pinned + meta_sinfo->bytes_readonly +
-		meta_sinfo->bytes_super + meta_sinfo->bytes_root +
-		meta_sinfo->bytes_may_use + meta_sinfo->bytes_delalloc;
-
-	if (used > meta_sinfo->total_bytes) {
-		flushed++;
-
-		if (flushed == 1) {
-			if (maybe_allocate_chunk(root, meta_sinfo))
-				goto again;
-			flushed++;
-		} else {
-			spin_unlock(&meta_sinfo->lock);
-		}
-
-		if (flushed == 2) {
-			filemap_flush(inode->i_mapping);
-			goto again;
-		} else if (flushed == 3) {
-			flush_delalloc(root, meta_sinfo);
-			goto again;
-		}
-		spin_lock(&meta_sinfo->lock);
-		meta_sinfo->bytes_delalloc -= num_bytes;
-		spin_unlock(&meta_sinfo->lock);
-		printk(KERN_ERR "enospc, has %d, reserved %d\n",
-		       BTRFS_I(inode)->outstanding_extents,
-		       BTRFS_I(inode)->reserved_extents);
-		dump_space_info(meta_sinfo, 0, 0);
-		return -ENOSPC;
-	}
-
-	BTRFS_I(inode)->reserved_extents += num_items;
-	check_force_delalloc(meta_sinfo);
-	spin_unlock(&meta_sinfo->lock);
-
-	if (!flushed && force_delalloc)
-		filemap_flush(inode->i_mapping);
-
-	return 0;
-}
-
-/*
- * unreserve num_items number of items worth of metadata space.  This needs to
- * be paired with btrfs_reserve_metadata_space.
- *
- * NOTE: if you have the option, run this _AFTER_ you do a
- * btrfs_end_transaction, since btrfs_end_transaction will run delayed ref
- * oprations which will result in more used metadata, so we want to make sure we
- * can do that without issue.
- */
-int btrfs_unreserve_metadata_space(struct btrfs_root *root, int num_items)
-{
-	struct btrfs_fs_info *info = root->fs_info;
-	struct btrfs_space_info *meta_sinfo;
-	u64 num_bytes;
-	u64 alloc_target;
-	bool bug = false;
-
-	/* get the space info for where the metadata will live */
-	alloc_target = btrfs_get_alloc_profile(root, 0);
-	meta_sinfo = __find_space_info(info, alloc_target);
-
-	num_bytes = calculate_bytes_needed(root, num_items);
-
-	spin_lock(&meta_sinfo->lock);
-	if (meta_sinfo->bytes_may_use < num_bytes) {
-		bug = true;
-		meta_sinfo->bytes_may_use = 0;
-	} else {
-		meta_sinfo->bytes_may_use -= num_bytes;
-	}
-	spin_unlock(&meta_sinfo->lock);
-
-	BUG_ON(bug);
-
-	return 0;
-}
-
-/*
- * Reserve some metadata space for use.  We'll calculate the worste case number
- * of bytes that would be needed to modify num_items number of items.  If we
- * have space, fantastic, if not, you get -ENOSPC.  Please call
- * btrfs_unreserve_metadata_space when you are done for the _SAME_ number of
- * items you reserved, since whatever metadata you needed should have already
- * been allocated.
- *
- * This will commit the transaction to make more space if we don't have enough
- * metadata space.  THe only time we don't do this is if we're reserving space
- * inside of a transaction, then we will just return -ENOSPC and it is the
- * callers responsibility to handle it properly.
- */
-int btrfs_reserve_metadata_space(struct btrfs_root *root, int num_items)
-{
-	struct btrfs_fs_info *info = root->fs_info;
-	struct btrfs_space_info *meta_sinfo;
-	u64 num_bytes;
-	u64 used;
-	u64 alloc_target;
-	int retries = 0;
-
-	/* get the space info for where the metadata will live */
-	alloc_target = btrfs_get_alloc_profile(root, 0);
-	meta_sinfo = __find_space_info(info, alloc_target);
-
-	num_bytes = calculate_bytes_needed(root, num_items);
-again:
-	spin_lock(&meta_sinfo->lock);
-
-	if (unlikely(!meta_sinfo->bytes_root))
-		meta_sinfo->bytes_root = calculate_bytes_needed(root, 6);
-
-	if (!retries)
-		meta_sinfo->bytes_may_use += num_bytes;
-
-	used = meta_sinfo->bytes_used + meta_sinfo->bytes_reserved +
-		meta_sinfo->bytes_pinned + meta_sinfo->bytes_readonly +
-		meta_sinfo->bytes_super + meta_sinfo->bytes_root +
-		meta_sinfo->bytes_may_use + meta_sinfo->bytes_delalloc;
-
-	if (used > meta_sinfo->total_bytes) {
-		retries++;
-		if (retries == 1) {
-			if (maybe_allocate_chunk(root, meta_sinfo))
-				goto again;
-			retries++;
-		} else {
-			spin_unlock(&meta_sinfo->lock);
-		}
-
-		if (retries == 2) {
-			flush_delalloc(root, meta_sinfo);
-			goto again;
-		}
-		spin_lock(&meta_sinfo->lock);
-		meta_sinfo->bytes_may_use -= num_bytes;
-		spin_unlock(&meta_sinfo->lock);
-
-		dump_space_info(meta_sinfo, 0, 0);
-		return -ENOSPC;
-	}
-
-	check_force_delalloc(meta_sinfo);
-	spin_unlock(&meta_sinfo->lock);
-
-	return 0;
+						       BTRFS_BLOCK_GROUP_DATA);
 }
 
 /*
  * This will check the space that the inode allocates from to make sure we have
  * enough space for bytes.
  */
-int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode,
-				u64 bytes)
+int btrfs_check_data_free_space(struct inode *inode, u64 bytes)
 {
 	struct btrfs_space_info *data_sinfo;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
 	u64 used;
-	int ret = 0, committed = 0, flushed = 0;
+	int ret = 0, committed = 0;
 
 	/* make sure bytes are sectorsize aligned */
 	bytes = (bytes + root->sectorsize - 1) & ~((u64)root->sectorsize - 1);
@@ -3248,21 +2895,13 @@
 again:
 	/* make sure we have enough space to handle the data first */
 	spin_lock(&data_sinfo->lock);
-	used = data_sinfo->bytes_used + data_sinfo->bytes_delalloc +
-		data_sinfo->bytes_reserved + data_sinfo->bytes_pinned +
-		data_sinfo->bytes_readonly + data_sinfo->bytes_may_use +
-		data_sinfo->bytes_super;
+	used = data_sinfo->bytes_used + data_sinfo->bytes_reserved +
+		data_sinfo->bytes_pinned + data_sinfo->bytes_readonly +
+		data_sinfo->bytes_may_use;
 
 	if (used + bytes > data_sinfo->total_bytes) {
 		struct btrfs_trans_handle *trans;
 
-		if (!flushed) {
-			spin_unlock(&data_sinfo->lock);
-			flush_delalloc(root, data_sinfo);
-			flushed = 1;
-			goto again;
-		}
-
 		/*
 		 * if we don't have enough free bytes in this space then we need
 		 * to alloc a new chunk.
@@ -3274,15 +2913,15 @@
 			spin_unlock(&data_sinfo->lock);
 alloc:
 			alloc_target = btrfs_get_alloc_profile(root, 1);
-			trans = btrfs_start_transaction(root, 1);
-			if (!trans)
-				return -ENOMEM;
+			trans = btrfs_join_transaction(root, 1);
+			if (IS_ERR(trans))
+				return PTR_ERR(trans);
 
 			ret = do_chunk_alloc(trans, root->fs_info->extent_root,
 					     bytes + 2 * 1024 * 1024,
 					     alloc_target, 0);
 			btrfs_end_transaction(trans, root);
-			if (ret)
+			if (ret < 0)
 				return ret;
 
 			if (!data_sinfo) {
@@ -3297,25 +2936,26 @@
 		if (!committed && !root->fs_info->open_ioctl_trans) {
 			committed = 1;
 			trans = btrfs_join_transaction(root, 1);
-			if (!trans)
-				return -ENOMEM;
+			if (IS_ERR(trans))
+				return PTR_ERR(trans);
 			ret = btrfs_commit_transaction(trans, root);
 			if (ret)
 				return ret;
 			goto again;
 		}
 
-		printk(KERN_ERR "no space left, need %llu, %llu delalloc bytes"
-		       ", %llu bytes_used, %llu bytes_reserved, "
-		       "%llu bytes_pinned, %llu bytes_readonly, %llu may use "
-		       "%llu total\n", (unsigned long long)bytes,
-		       (unsigned long long)data_sinfo->bytes_delalloc,
+#if 0 /* I hope we never need this code again, just in case */
+		printk(KERN_ERR "no space left, need %llu, %llu bytes_used, "
+		       "%llu bytes_reserved, " "%llu bytes_pinned, "
+		       "%llu bytes_readonly, %llu may use %llu total\n",
+		       (unsigned long long)bytes,
 		       (unsigned long long)data_sinfo->bytes_used,
 		       (unsigned long long)data_sinfo->bytes_reserved,
 		       (unsigned long long)data_sinfo->bytes_pinned,
 		       (unsigned long long)data_sinfo->bytes_readonly,
 		       (unsigned long long)data_sinfo->bytes_may_use,
 		       (unsigned long long)data_sinfo->total_bytes);
+#endif
 		return -ENOSPC;
 	}
 	data_sinfo->bytes_may_use += bytes;
@@ -3326,12 +2966,13 @@
 }
 
 /*
- * if there was an error for whatever reason after calling
- * btrfs_check_data_free_space, call this so we can cleanup the counters.
+ * called when we are clearing an delalloc extent from the
+ * inode's io_tree or there was an error for whatever reason
+ * after calling btrfs_check_data_free_space
  */
-void btrfs_free_reserved_data_space(struct btrfs_root *root,
-				    struct inode *inode, u64 bytes)
+void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes)
 {
+	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct btrfs_space_info *data_sinfo;
 
 	/* make sure bytes are sectorsize aligned */
@@ -3344,48 +2985,6 @@
 	spin_unlock(&data_sinfo->lock);
 }
 
-/* called when we are adding a delalloc extent to the inode's io_tree */
-void btrfs_delalloc_reserve_space(struct btrfs_root *root, struct inode *inode,
-				  u64 bytes)
-{
-	struct btrfs_space_info *data_sinfo;
-
-	/* get the space info for where this inode will be storing its data */
-	data_sinfo = BTRFS_I(inode)->space_info;
-
-	/* make sure we have enough space to handle the data first */
-	spin_lock(&data_sinfo->lock);
-	data_sinfo->bytes_delalloc += bytes;
-
-	/*
-	 * we are adding a delalloc extent without calling
-	 * btrfs_check_data_free_space first.  This happens on a weird
-	 * writepage condition, but shouldn't hurt our accounting
-	 */
-	if (unlikely(bytes > BTRFS_I(inode)->reserved_bytes)) {
-		data_sinfo->bytes_may_use -= BTRFS_I(inode)->reserved_bytes;
-		BTRFS_I(inode)->reserved_bytes = 0;
-	} else {
-		data_sinfo->bytes_may_use -= bytes;
-		BTRFS_I(inode)->reserved_bytes -= bytes;
-	}
-
-	spin_unlock(&data_sinfo->lock);
-}
-
-/* called when we are clearing an delalloc extent from the inode's io_tree */
-void btrfs_delalloc_free_space(struct btrfs_root *root, struct inode *inode,
-			      u64 bytes)
-{
-	struct btrfs_space_info *info;
-
-	info = BTRFS_I(inode)->space_info;
-
-	spin_lock(&info->lock);
-	info->bytes_delalloc -= bytes;
-	spin_unlock(&info->lock);
-}
-
 static void force_metadata_allocation(struct btrfs_fs_info *info)
 {
 	struct list_head *head = &info->space_info;
@@ -3399,13 +2998,28 @@
 	rcu_read_unlock();
 }
 
+static int should_alloc_chunk(struct btrfs_space_info *sinfo,
+			      u64 alloc_bytes)
+{
+	u64 num_bytes = sinfo->total_bytes - sinfo->bytes_readonly;
+
+	if (sinfo->bytes_used + sinfo->bytes_reserved +
+	    alloc_bytes + 256 * 1024 * 1024 < num_bytes)
+		return 0;
+
+	if (sinfo->bytes_used + sinfo->bytes_reserved +
+	    alloc_bytes < div_factor(num_bytes, 8))
+		return 0;
+
+	return 1;
+}
+
 static int do_chunk_alloc(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *extent_root, u64 alloc_bytes,
 			  u64 flags, int force)
 {
 	struct btrfs_space_info *space_info;
 	struct btrfs_fs_info *fs_info = extent_root->fs_info;
-	u64 thresh;
 	int ret = 0;
 
 	mutex_lock(&fs_info->chunk_mutex);
@@ -3428,11 +3042,7 @@
 		goto out;
 	}
 
-	thresh = space_info->total_bytes - space_info->bytes_readonly;
-	thresh = div_factor(thresh, 8);
-	if (!force &&
-	   (space_info->bytes_used + space_info->bytes_pinned +
-	    space_info->bytes_reserved + alloc_bytes) < thresh) {
+	if (!force && !should_alloc_chunk(space_info, alloc_bytes)) {
 		spin_unlock(&space_info->lock);
 		goto out;
 	}
@@ -3454,6 +3064,8 @@
 	spin_lock(&space_info->lock);
 	if (ret)
 		space_info->full = 1;
+	else
+		ret = 1;
 	space_info->force_alloc = 0;
 	spin_unlock(&space_info->lock);
 out:
@@ -3461,13 +3073,713 @@
 	return ret;
 }
 
+static int maybe_allocate_chunk(struct btrfs_trans_handle *trans,
+				struct btrfs_root *root,
+				struct btrfs_space_info *sinfo, u64 num_bytes)
+{
+	int ret;
+	int end_trans = 0;
+
+	if (sinfo->full)
+		return 0;
+
+	spin_lock(&sinfo->lock);
+	ret = should_alloc_chunk(sinfo, num_bytes + 2 * 1024 * 1024);
+	spin_unlock(&sinfo->lock);
+	if (!ret)
+		return 0;
+
+	if (!trans) {
+		trans = btrfs_join_transaction(root, 1);
+		BUG_ON(IS_ERR(trans));
+		end_trans = 1;
+	}
+
+	ret = do_chunk_alloc(trans, root->fs_info->extent_root,
+			     num_bytes + 2 * 1024 * 1024,
+			     get_alloc_profile(root, sinfo->flags), 0);
+
+	if (end_trans)
+		btrfs_end_transaction(trans, root);
+
+	return ret == 1 ? 1 : 0;
+}
+
+/*
+ * shrink metadata reservation for delalloc
+ */
+static int shrink_delalloc(struct btrfs_trans_handle *trans,
+			   struct btrfs_root *root, u64 to_reclaim)
+{
+	struct btrfs_block_rsv *block_rsv;
+	u64 reserved;
+	u64 max_reclaim;
+	u64 reclaimed = 0;
+	int pause = 1;
+	int ret;
+
+	block_rsv = &root->fs_info->delalloc_block_rsv;
+	spin_lock(&block_rsv->lock);
+	reserved = block_rsv->reserved;
+	spin_unlock(&block_rsv->lock);
+
+	if (reserved == 0)
+		return 0;
+
+	max_reclaim = min(reserved, to_reclaim);
+
+	while (1) {
+		ret = btrfs_start_one_delalloc_inode(root, trans ? 1 : 0);
+		if (!ret) {
+			__set_current_state(TASK_INTERRUPTIBLE);
+			schedule_timeout(pause);
+			pause <<= 1;
+			if (pause > HZ / 10)
+				pause = HZ / 10;
+		} else {
+			pause = 1;
+		}
+
+		spin_lock(&block_rsv->lock);
+		if (reserved > block_rsv->reserved)
+			reclaimed = reserved - block_rsv->reserved;
+		reserved = block_rsv->reserved;
+		spin_unlock(&block_rsv->lock);
+
+		if (reserved == 0 || reclaimed >= max_reclaim)
+			break;
+
+		if (trans && trans->transaction->blocked)
+			return -EAGAIN;
+	}
+	return reclaimed >= to_reclaim;
+}
+
+static int should_retry_reserve(struct btrfs_trans_handle *trans,
+				struct btrfs_root *root,
+				struct btrfs_block_rsv *block_rsv,
+				u64 num_bytes, int *retries)
+{
+	struct btrfs_space_info *space_info = block_rsv->space_info;
+	int ret;
+
+	if ((*retries) > 2)
+		return -ENOSPC;
+
+	ret = maybe_allocate_chunk(trans, root, space_info, num_bytes);
+	if (ret)
+		return 1;
+
+	if (trans && trans->transaction->in_commit)
+		return -ENOSPC;
+
+	ret = shrink_delalloc(trans, root, num_bytes);
+	if (ret)
+		return ret;
+
+	spin_lock(&space_info->lock);
+	if (space_info->bytes_pinned < num_bytes)
+		ret = 1;
+	spin_unlock(&space_info->lock);
+	if (ret)
+		return -ENOSPC;
+
+	(*retries)++;
+
+	if (trans)
+		return -EAGAIN;
+
+	trans = btrfs_join_transaction(root, 1);
+	BUG_ON(IS_ERR(trans));
+	ret = btrfs_commit_transaction(trans, root);
+	BUG_ON(ret);
+
+	return 1;
+}
+
+static int reserve_metadata_bytes(struct btrfs_block_rsv *block_rsv,
+				  u64 num_bytes)
+{
+	struct btrfs_space_info *space_info = block_rsv->space_info;
+	u64 unused;
+	int ret = -ENOSPC;
+
+	spin_lock(&space_info->lock);
+	unused = space_info->bytes_used + space_info->bytes_reserved +
+		 space_info->bytes_pinned + space_info->bytes_readonly;
+
+	if (unused < space_info->total_bytes)
+		unused = space_info->total_bytes - unused;
+	else
+		unused = 0;
+
+	if (unused >= num_bytes) {
+		if (block_rsv->priority >= 10) {
+			space_info->bytes_reserved += num_bytes;
+			ret = 0;
+		} else {
+			if ((unused + block_rsv->reserved) *
+			    block_rsv->priority >=
+			    (num_bytes + block_rsv->reserved) * 10) {
+				space_info->bytes_reserved += num_bytes;
+				ret = 0;
+			}
+		}
+	}
+	spin_unlock(&space_info->lock);
+
+	return ret;
+}
+
+static struct btrfs_block_rsv *get_block_rsv(struct btrfs_trans_handle *trans,
+					     struct btrfs_root *root)
+{
+	struct btrfs_block_rsv *block_rsv;
+	if (root->ref_cows)
+		block_rsv = trans->block_rsv;
+	else
+		block_rsv = root->block_rsv;
+
+	if (!block_rsv)
+		block_rsv = &root->fs_info->empty_block_rsv;
+
+	return block_rsv;
+}
+
+static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv,
+			       u64 num_bytes)
+{
+	int ret = -ENOSPC;
+	spin_lock(&block_rsv->lock);
+	if (block_rsv->reserved >= num_bytes) {
+		block_rsv->reserved -= num_bytes;
+		if (block_rsv->reserved < block_rsv->size)
+			block_rsv->full = 0;
+		ret = 0;
+	}
+	spin_unlock(&block_rsv->lock);
+	return ret;
+}
+
+static void block_rsv_add_bytes(struct btrfs_block_rsv *block_rsv,
+				u64 num_bytes, int update_size)
+{
+	spin_lock(&block_rsv->lock);
+	block_rsv->reserved += num_bytes;
+	if (update_size)
+		block_rsv->size += num_bytes;
+	else if (block_rsv->reserved >= block_rsv->size)
+		block_rsv->full = 1;
+	spin_unlock(&block_rsv->lock);
+}
+
+void block_rsv_release_bytes(struct btrfs_block_rsv *block_rsv,
+			     struct btrfs_block_rsv *dest, u64 num_bytes)
+{
+	struct btrfs_space_info *space_info = block_rsv->space_info;
+
+	spin_lock(&block_rsv->lock);
+	if (num_bytes == (u64)-1)
+		num_bytes = block_rsv->size;
+	block_rsv->size -= num_bytes;
+	if (block_rsv->reserved >= block_rsv->size) {
+		num_bytes = block_rsv->reserved - block_rsv->size;
+		block_rsv->reserved = block_rsv->size;
+		block_rsv->full = 1;
+	} else {
+		num_bytes = 0;
+	}
+	spin_unlock(&block_rsv->lock);
+
+	if (num_bytes > 0) {
+		if (dest) {
+			block_rsv_add_bytes(dest, num_bytes, 0);
+		} else {
+			spin_lock(&space_info->lock);
+			space_info->bytes_reserved -= num_bytes;
+			spin_unlock(&space_info->lock);
+		}
+	}
+}
+
+static int block_rsv_migrate_bytes(struct btrfs_block_rsv *src,
+				   struct btrfs_block_rsv *dst, u64 num_bytes)
+{
+	int ret;
+
+	ret = block_rsv_use_bytes(src, num_bytes);
+	if (ret)
+		return ret;
+
+	block_rsv_add_bytes(dst, num_bytes, 1);
+	return 0;
+}
+
+void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv)
+{
+	memset(rsv, 0, sizeof(*rsv));
+	spin_lock_init(&rsv->lock);
+	atomic_set(&rsv->usage, 1);
+	rsv->priority = 6;
+	INIT_LIST_HEAD(&rsv->list);
+}
+
+struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root)
+{
+	struct btrfs_block_rsv *block_rsv;
+	struct btrfs_fs_info *fs_info = root->fs_info;
+	u64 alloc_target;
+
+	block_rsv = kmalloc(sizeof(*block_rsv), GFP_NOFS);
+	if (!block_rsv)
+		return NULL;
+
+	btrfs_init_block_rsv(block_rsv);
+
+	alloc_target = btrfs_get_alloc_profile(root, 0);
+	block_rsv->space_info = __find_space_info(fs_info,
+						  BTRFS_BLOCK_GROUP_METADATA);
+
+	return block_rsv;
+}
+
+void btrfs_free_block_rsv(struct btrfs_root *root,
+			  struct btrfs_block_rsv *rsv)
+{
+	if (rsv && atomic_dec_and_test(&rsv->usage)) {
+		btrfs_block_rsv_release(root, rsv, (u64)-1);
+		if (!rsv->durable)
+			kfree(rsv);
+	}
+}
+
+/*
+ * make the block_rsv struct be able to capture freed space.
+ * the captured space will re-add to the the block_rsv struct
+ * after transaction commit
+ */
+void btrfs_add_durable_block_rsv(struct btrfs_fs_info *fs_info,
+				 struct btrfs_block_rsv *block_rsv)
+{
+	block_rsv->durable = 1;
+	mutex_lock(&fs_info->durable_block_rsv_mutex);
+	list_add_tail(&block_rsv->list, &fs_info->durable_block_rsv_list);
+	mutex_unlock(&fs_info->durable_block_rsv_mutex);
+}
+
+int btrfs_block_rsv_add(struct btrfs_trans_handle *trans,
+			struct btrfs_root *root,
+			struct btrfs_block_rsv *block_rsv,
+			u64 num_bytes, int *retries)
+{
+	int ret;
+
+	if (num_bytes == 0)
+		return 0;
+again:
+	ret = reserve_metadata_bytes(block_rsv, num_bytes);
+	if (!ret) {
+		block_rsv_add_bytes(block_rsv, num_bytes, 1);
+		return 0;
+	}
+
+	ret = should_retry_reserve(trans, root, block_rsv, num_bytes, retries);
+	if (ret > 0)
+		goto again;
+
+	return ret;
+}
+
+int btrfs_block_rsv_check(struct btrfs_trans_handle *trans,
+			  struct btrfs_root *root,
+			  struct btrfs_block_rsv *block_rsv,
+			  u64 min_reserved, int min_factor)
+{
+	u64 num_bytes = 0;
+	int commit_trans = 0;
+	int ret = -ENOSPC;
+
+	if (!block_rsv)
+		return 0;
+
+	spin_lock(&block_rsv->lock);
+	if (min_factor > 0)
+		num_bytes = div_factor(block_rsv->size, min_factor);
+	if (min_reserved > num_bytes)
+		num_bytes = min_reserved;
+
+	if (block_rsv->reserved >= num_bytes) {
+		ret = 0;
+	} else {
+		num_bytes -= block_rsv->reserved;
+		if (block_rsv->durable &&
+		    block_rsv->freed[0] + block_rsv->freed[1] >= num_bytes)
+			commit_trans = 1;
+	}
+	spin_unlock(&block_rsv->lock);
+	if (!ret)
+		return 0;
+
+	if (block_rsv->refill_used) {
+		ret = reserve_metadata_bytes(block_rsv, num_bytes);
+		if (!ret) {
+			block_rsv_add_bytes(block_rsv, num_bytes, 0);
+			return 0;
+		}
+	}
+
+	if (commit_trans) {
+		if (trans)
+			return -EAGAIN;
+
+		trans = btrfs_join_transaction(root, 1);
+		BUG_ON(IS_ERR(trans));
+		ret = btrfs_commit_transaction(trans, root);
+		return 0;
+	}
+
+	WARN_ON(1);
+	printk(KERN_INFO"block_rsv size %llu reserved %llu freed %llu %llu\n",
+		block_rsv->size, block_rsv->reserved,
+		block_rsv->freed[0], block_rsv->freed[1]);
+
+	return -ENOSPC;
+}
+
+int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
+			    struct btrfs_block_rsv *dst_rsv,
+			    u64 num_bytes)
+{
+	return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
+}
+
+void btrfs_block_rsv_release(struct btrfs_root *root,
+			     struct btrfs_block_rsv *block_rsv,
+			     u64 num_bytes)
+{
+	struct btrfs_block_rsv *global_rsv = &root->fs_info->global_block_rsv;
+	if (global_rsv->full || global_rsv == block_rsv ||
+	    block_rsv->space_info != global_rsv->space_info)
+		global_rsv = NULL;
+	block_rsv_release_bytes(block_rsv, global_rsv, num_bytes);
+}
+
+/*
+ * helper to calculate size of global block reservation.
+ * the desired value is sum of space used by extent tree,
+ * checksum tree and root tree
+ */
+static u64 calc_global_metadata_size(struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_space_info *sinfo;
+	u64 num_bytes;
+	u64 meta_used;
+	u64 data_used;
+	int csum_size = btrfs_super_csum_size(&fs_info->super_copy);
+#if 0
+	/*
+	 * per tree used space accounting can be inaccuracy, so we
+	 * can't rely on it.
+	 */
+	spin_lock(&fs_info->extent_root->accounting_lock);
+	num_bytes = btrfs_root_used(&fs_info->extent_root->root_item);
+	spin_unlock(&fs_info->extent_root->accounting_lock);
+
+	spin_lock(&fs_info->csum_root->accounting_lock);
+	num_bytes += btrfs_root_used(&fs_info->csum_root->root_item);
+	spin_unlock(&fs_info->csum_root->accounting_lock);
+
+	spin_lock(&fs_info->tree_root->accounting_lock);
+	num_bytes += btrfs_root_used(&fs_info->tree_root->root_item);
+	spin_unlock(&fs_info->tree_root->accounting_lock);
+#endif
+	sinfo = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_DATA);
+	spin_lock(&sinfo->lock);
+	data_used = sinfo->bytes_used;
+	spin_unlock(&sinfo->lock);
+
+	sinfo = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
+	spin_lock(&sinfo->lock);
+	meta_used = sinfo->bytes_used;
+	spin_unlock(&sinfo->lock);
+
+	num_bytes = (data_used >> fs_info->sb->s_blocksize_bits) *
+		    csum_size * 2;
+	num_bytes += div64_u64(data_used + meta_used, 50);
+
+	if (num_bytes * 3 > meta_used)
+		num_bytes = div64_u64(meta_used, 3);
+
+	return ALIGN(num_bytes, fs_info->extent_root->leafsize << 10);
+}
+
+static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
+	struct btrfs_space_info *sinfo = block_rsv->space_info;
+	u64 num_bytes;
+
+	num_bytes = calc_global_metadata_size(fs_info);
+
+	spin_lock(&block_rsv->lock);
+	spin_lock(&sinfo->lock);
+
+	block_rsv->size = num_bytes;
+
+	num_bytes = sinfo->bytes_used + sinfo->bytes_pinned +
+		    sinfo->bytes_reserved + sinfo->bytes_readonly;
+
+	if (sinfo->total_bytes > num_bytes) {
+		num_bytes = sinfo->total_bytes - num_bytes;
+		block_rsv->reserved += num_bytes;
+		sinfo->bytes_reserved += num_bytes;
+	}
+
+	if (block_rsv->reserved >= block_rsv->size) {
+		num_bytes = block_rsv->reserved - block_rsv->size;
+		sinfo->bytes_reserved -= num_bytes;
+		block_rsv->reserved = block_rsv->size;
+		block_rsv->full = 1;
+	}
+#if 0
+	printk(KERN_INFO"global block rsv size %llu reserved %llu\n",
+		block_rsv->size, block_rsv->reserved);
+#endif
+	spin_unlock(&sinfo->lock);
+	spin_unlock(&block_rsv->lock);
+}
+
+static void init_global_block_rsv(struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_space_info *space_info;
+
+	space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
+	fs_info->chunk_block_rsv.space_info = space_info;
+	fs_info->chunk_block_rsv.priority = 10;
+
+	space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
+	fs_info->global_block_rsv.space_info = space_info;
+	fs_info->global_block_rsv.priority = 10;
+	fs_info->global_block_rsv.refill_used = 1;
+	fs_info->delalloc_block_rsv.space_info = space_info;
+	fs_info->trans_block_rsv.space_info = space_info;
+	fs_info->empty_block_rsv.space_info = space_info;
+	fs_info->empty_block_rsv.priority = 10;
+
+	fs_info->extent_root->block_rsv = &fs_info->global_block_rsv;
+	fs_info->csum_root->block_rsv = &fs_info->global_block_rsv;
+	fs_info->dev_root->block_rsv = &fs_info->global_block_rsv;
+	fs_info->tree_root->block_rsv = &fs_info->global_block_rsv;
+	fs_info->chunk_root->block_rsv = &fs_info->chunk_block_rsv;
+
+	btrfs_add_durable_block_rsv(fs_info, &fs_info->global_block_rsv);
+
+	btrfs_add_durable_block_rsv(fs_info, &fs_info->delalloc_block_rsv);
+
+	update_global_block_rsv(fs_info);
+}
+
+static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
+{
+	block_rsv_release_bytes(&fs_info->global_block_rsv, NULL, (u64)-1);
+	WARN_ON(fs_info->delalloc_block_rsv.size > 0);
+	WARN_ON(fs_info->delalloc_block_rsv.reserved > 0);
+	WARN_ON(fs_info->trans_block_rsv.size > 0);
+	WARN_ON(fs_info->trans_block_rsv.reserved > 0);
+	WARN_ON(fs_info->chunk_block_rsv.size > 0);
+	WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
+}
+
+static u64 calc_trans_metadata_size(struct btrfs_root *root, int num_items)
+{
+	return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) *
+		3 * num_items;
+}
+
+int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans,
+				 struct btrfs_root *root,
+				 int num_items, int *retries)
+{
+	u64 num_bytes;
+	int ret;
+
+	if (num_items == 0 || root->fs_info->chunk_root == root)
+		return 0;
+
+	num_bytes = calc_trans_metadata_size(root, num_items);
+	ret = btrfs_block_rsv_add(trans, root, &root->fs_info->trans_block_rsv,
+				  num_bytes, retries);
+	if (!ret) {
+		trans->bytes_reserved += num_bytes;
+		trans->block_rsv = &root->fs_info->trans_block_rsv;
+	}
+	return ret;
+}
+
+void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans,
+				  struct btrfs_root *root)
+{
+	if (!trans->bytes_reserved)
+		return;
+
+	BUG_ON(trans->block_rsv != &root->fs_info->trans_block_rsv);
+	btrfs_block_rsv_release(root, trans->block_rsv,
+				trans->bytes_reserved);
+	trans->bytes_reserved = 0;
+}
+
+int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans,
+				  struct inode *inode)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_block_rsv *src_rsv = get_block_rsv(trans, root);
+	struct btrfs_block_rsv *dst_rsv = root->orphan_block_rsv;
+
+	/*
+	 * one for deleting orphan item, one for updating inode and
+	 * two for calling btrfs_truncate_inode_items.
+	 *
+	 * btrfs_truncate_inode_items is a delete operation, it frees
+	 * more space than it uses in most cases. So two units of
+	 * metadata space should be enough for calling it many times.
+	 * If all of the metadata space is used, we can commit
+	 * transaction and use space it freed.
+	 */
+	u64 num_bytes = calc_trans_metadata_size(root, 4);
+	return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
+}
+
+void btrfs_orphan_release_metadata(struct inode *inode)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	u64 num_bytes = calc_trans_metadata_size(root, 4);
+	btrfs_block_rsv_release(root, root->orphan_block_rsv, num_bytes);
+}
+
+int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans,
+				struct btrfs_pending_snapshot *pending)
+{
+	struct btrfs_root *root = pending->root;
+	struct btrfs_block_rsv *src_rsv = get_block_rsv(trans, root);
+	struct btrfs_block_rsv *dst_rsv = &pending->block_rsv;
+	/*
+	 * two for root back/forward refs, two for directory entries
+	 * and one for root of the snapshot.
+	 */
+	u64 num_bytes = calc_trans_metadata_size(root, 5);
+	dst_rsv->space_info = src_rsv->space_info;
+	return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
+}
+
+static u64 calc_csum_metadata_size(struct inode *inode, u64 num_bytes)
+{
+	return num_bytes >>= 3;
+}
+
+int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_block_rsv *block_rsv = &root->fs_info->delalloc_block_rsv;
+	u64 to_reserve;
+	int nr_extents;
+	int retries = 0;
+	int ret;
+
+	if (btrfs_transaction_in_commit(root->fs_info))
+		schedule_timeout(1);
+
+	num_bytes = ALIGN(num_bytes, root->sectorsize);
+again:
+	spin_lock(&BTRFS_I(inode)->accounting_lock);
+	nr_extents = atomic_read(&BTRFS_I(inode)->outstanding_extents) + 1;
+	if (nr_extents > BTRFS_I(inode)->reserved_extents) {
+		nr_extents -= BTRFS_I(inode)->reserved_extents;
+		to_reserve = calc_trans_metadata_size(root, nr_extents);
+	} else {
+		nr_extents = 0;
+		to_reserve = 0;
+	}
+
+	to_reserve += calc_csum_metadata_size(inode, num_bytes);
+	ret = reserve_metadata_bytes(block_rsv, to_reserve);
+	if (ret) {
+		spin_unlock(&BTRFS_I(inode)->accounting_lock);
+		ret = should_retry_reserve(NULL, root, block_rsv, to_reserve,
+					   &retries);
+		if (ret > 0)
+			goto again;
+		return ret;
+	}
+
+	BTRFS_I(inode)->reserved_extents += nr_extents;
+	atomic_inc(&BTRFS_I(inode)->outstanding_extents);
+	spin_unlock(&BTRFS_I(inode)->accounting_lock);
+
+	block_rsv_add_bytes(block_rsv, to_reserve, 1);
+
+	if (block_rsv->size > 512 * 1024 * 1024)
+		shrink_delalloc(NULL, root, to_reserve);
+
+	return 0;
+}
+
+void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	u64 to_free;
+	int nr_extents;
+
+	num_bytes = ALIGN(num_bytes, root->sectorsize);
+	atomic_dec(&BTRFS_I(inode)->outstanding_extents);
+
+	spin_lock(&BTRFS_I(inode)->accounting_lock);
+	nr_extents = atomic_read(&BTRFS_I(inode)->outstanding_extents);
+	if (nr_extents < BTRFS_I(inode)->reserved_extents) {
+		nr_extents = BTRFS_I(inode)->reserved_extents - nr_extents;
+		BTRFS_I(inode)->reserved_extents -= nr_extents;
+	} else {
+		nr_extents = 0;
+	}
+	spin_unlock(&BTRFS_I(inode)->accounting_lock);
+
+	to_free = calc_csum_metadata_size(inode, num_bytes);
+	if (nr_extents > 0)
+		to_free += calc_trans_metadata_size(root, nr_extents);
+
+	btrfs_block_rsv_release(root, &root->fs_info->delalloc_block_rsv,
+				to_free);
+}
+
+int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes)
+{
+	int ret;
+
+	ret = btrfs_check_data_free_space(inode, num_bytes);
+	if (ret)
+		return ret;
+
+	ret = btrfs_delalloc_reserve_metadata(inode, num_bytes);
+	if (ret) {
+		btrfs_free_reserved_data_space(inode, num_bytes);
+		return ret;
+	}
+
+	return 0;
+}
+
+void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes)
+{
+	btrfs_delalloc_release_metadata(inode, num_bytes);
+	btrfs_free_reserved_data_space(inode, num_bytes);
+}
+
 static int update_block_group(struct btrfs_trans_handle *trans,
 			      struct btrfs_root *root,
-			      u64 bytenr, u64 num_bytes, int alloc,
-			      int mark_free)
+			      u64 bytenr, u64 num_bytes, int alloc)
 {
 	struct btrfs_block_group_cache *cache;
 	struct btrfs_fs_info *info = root->fs_info;
+	int factor;
 	u64 total = num_bytes;
 	u64 old_val;
 	u64 byte_in_group;
@@ -3486,6 +3798,12 @@
 		cache = btrfs_lookup_block_group(info, bytenr);
 		if (!cache)
 			return -1;
+		if (cache->flags & (BTRFS_BLOCK_GROUP_DUP |
+				    BTRFS_BLOCK_GROUP_RAID1 |
+				    BTRFS_BLOCK_GROUP_RAID10))
+			factor = 2;
+		else
+			factor = 1;
 		byte_in_group = bytenr - cache->key.objectid;
 		WARN_ON(byte_in_group > cache->key.offset);
 
@@ -3498,31 +3816,24 @@
 			old_val += num_bytes;
 			btrfs_set_block_group_used(&cache->item, old_val);
 			cache->reserved -= num_bytes;
-			cache->space_info->bytes_used += num_bytes;
 			cache->space_info->bytes_reserved -= num_bytes;
-			if (cache->ro)
-				cache->space_info->bytes_readonly -= num_bytes;
+			cache->space_info->bytes_used += num_bytes;
+			cache->space_info->disk_used += num_bytes * factor;
 			spin_unlock(&cache->lock);
 			spin_unlock(&cache->space_info->lock);
 		} else {
 			old_val -= num_bytes;
-			cache->space_info->bytes_used -= num_bytes;
-			if (cache->ro)
-				cache->space_info->bytes_readonly += num_bytes;
 			btrfs_set_block_group_used(&cache->item, old_val);
+			cache->pinned += num_bytes;
+			cache->space_info->bytes_pinned += num_bytes;
+			cache->space_info->bytes_used -= num_bytes;
+			cache->space_info->disk_used -= num_bytes * factor;
 			spin_unlock(&cache->lock);
 			spin_unlock(&cache->space_info->lock);
-			if (mark_free) {
-				int ret;
 
-				ret = btrfs_discard_extent(root, bytenr,
-							   num_bytes);
-				WARN_ON(ret);
-
-				ret = btrfs_add_free_space(cache, bytenr,
-							   num_bytes);
-				WARN_ON(ret);
-			}
+			set_extent_dirty(info->pinned_extents,
+					 bytenr, bytenr + num_bytes - 1,
+					 GFP_NOFS | __GFP_NOFAIL);
 		}
 		btrfs_put_block_group(cache);
 		total -= num_bytes;
@@ -3546,18 +3857,10 @@
 	return bytenr;
 }
 
-/*
- * this function must be called within transaction
- */
-int btrfs_pin_extent(struct btrfs_root *root,
-		     u64 bytenr, u64 num_bytes, int reserved)
+static int pin_down_extent(struct btrfs_root *root,
+			   struct btrfs_block_group_cache *cache,
+			   u64 bytenr, u64 num_bytes, int reserved)
 {
-	struct btrfs_fs_info *fs_info = root->fs_info;
-	struct btrfs_block_group_cache *cache;
-
-	cache = btrfs_lookup_block_group(fs_info, bytenr);
-	BUG_ON(!cache);
-
 	spin_lock(&cache->space_info->lock);
 	spin_lock(&cache->lock);
 	cache->pinned += num_bytes;
@@ -3569,30 +3872,70 @@
 	spin_unlock(&cache->lock);
 	spin_unlock(&cache->space_info->lock);
 
-	btrfs_put_block_group(cache);
-
-	set_extent_dirty(fs_info->pinned_extents,
-			 bytenr, bytenr + num_bytes - 1, GFP_NOFS);
+	set_extent_dirty(root->fs_info->pinned_extents, bytenr,
+			 bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL);
 	return 0;
 }
 
-static int update_reserved_extents(struct btrfs_block_group_cache *cache,
-				   u64 num_bytes, int reserve)
+/*
+ * this function must be called within transaction
+ */
+int btrfs_pin_extent(struct btrfs_root *root,
+		     u64 bytenr, u64 num_bytes, int reserved)
 {
-	spin_lock(&cache->space_info->lock);
-	spin_lock(&cache->lock);
-	if (reserve) {
-		cache->reserved += num_bytes;
-		cache->space_info->bytes_reserved += num_bytes;
-	} else {
-		cache->reserved -= num_bytes;
-		cache->space_info->bytes_reserved -= num_bytes;
-	}
-	spin_unlock(&cache->lock);
-	spin_unlock(&cache->space_info->lock);
+	struct btrfs_block_group_cache *cache;
+
+	cache = btrfs_lookup_block_group(root->fs_info, bytenr);
+	BUG_ON(!cache);
+
+	pin_down_extent(root, cache, bytenr, num_bytes, reserved);
+
+	btrfs_put_block_group(cache);
 	return 0;
 }
 
+/*
+ * update size of reserved extents. this function may return -EAGAIN
+ * if 'reserve' is true or 'sinfo' is false.
+ */
+static int update_reserved_bytes(struct btrfs_block_group_cache *cache,
+				 u64 num_bytes, int reserve, int sinfo)
+{
+	int ret = 0;
+	if (sinfo) {
+		struct btrfs_space_info *space_info = cache->space_info;
+		spin_lock(&space_info->lock);
+		spin_lock(&cache->lock);
+		if (reserve) {
+			if (cache->ro) {
+				ret = -EAGAIN;
+			} else {
+				cache->reserved += num_bytes;
+				space_info->bytes_reserved += num_bytes;
+			}
+		} else {
+			if (cache->ro)
+				space_info->bytes_readonly += num_bytes;
+			cache->reserved -= num_bytes;
+			space_info->bytes_reserved -= num_bytes;
+		}
+		spin_unlock(&cache->lock);
+		spin_unlock(&space_info->lock);
+	} else {
+		spin_lock(&cache->lock);
+		if (cache->ro) {
+			ret = -EAGAIN;
+		} else {
+			if (reserve)
+				cache->reserved += num_bytes;
+			else
+				cache->reserved -= num_bytes;
+		}
+		spin_unlock(&cache->lock);
+	}
+	return ret;
+}
+
 int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root)
 {
@@ -3621,6 +3964,8 @@
 		fs_info->pinned_extents = &fs_info->freed_extents[0];
 
 	up_write(&fs_info->extent_commit_sem);
+
+	update_global_block_rsv(fs_info);
 	return 0;
 }
 
@@ -3647,14 +3992,21 @@
 			btrfs_add_free_space(cache, start, len);
 		}
 
+		start += len;
+
 		spin_lock(&cache->space_info->lock);
 		spin_lock(&cache->lock);
 		cache->pinned -= len;
 		cache->space_info->bytes_pinned -= len;
+		if (cache->ro) {
+			cache->space_info->bytes_readonly += len;
+		} else if (cache->reserved_pinned > 0) {
+			len = min(len, cache->reserved_pinned);
+			cache->reserved_pinned -= len;
+			cache->space_info->bytes_reserved += len;
+		}
 		spin_unlock(&cache->lock);
 		spin_unlock(&cache->space_info->lock);
-
-		start += len;
 	}
 
 	if (cache)
@@ -3667,8 +4019,11 @@
 {
 	struct btrfs_fs_info *fs_info = root->fs_info;
 	struct extent_io_tree *unpin;
+	struct btrfs_block_rsv *block_rsv;
+	struct btrfs_block_rsv *next_rsv;
 	u64 start;
 	u64 end;
+	int idx;
 	int ret;
 
 	if (fs_info->pinned_extents == &fs_info->freed_extents[0])
@@ -3689,59 +4044,30 @@
 		cond_resched();
 	}
 
-	return ret;
-}
+	mutex_lock(&fs_info->durable_block_rsv_mutex);
+	list_for_each_entry_safe(block_rsv, next_rsv,
+				 &fs_info->durable_block_rsv_list, list) {
 
-static int pin_down_bytes(struct btrfs_trans_handle *trans,
-			  struct btrfs_root *root,
-			  struct btrfs_path *path,
-			  u64 bytenr, u64 num_bytes,
-			  int is_data, int reserved,
-			  struct extent_buffer **must_clean)
-{
-	int err = 0;
-	struct extent_buffer *buf;
-
-	if (is_data)
-		goto pinit;
-
-	/*
-	 * discard is sloooow, and so triggering discards on
-	 * individual btree blocks isn't a good plan.  Just
-	 * pin everything in discard mode.
-	 */
-	if (btrfs_test_opt(root, DISCARD))
-		goto pinit;
-
-	buf = btrfs_find_tree_block(root, bytenr, num_bytes);
-	if (!buf)
-		goto pinit;
-
-	/* we can reuse a block if it hasn't been written
-	 * and it is from this transaction.  We can't
-	 * reuse anything from the tree log root because
-	 * it has tiny sub-transactions.
-	 */
-	if (btrfs_buffer_uptodate(buf, 0) &&
-	    btrfs_try_tree_lock(buf)) {
-		u64 header_owner = btrfs_header_owner(buf);
-		u64 header_transid = btrfs_header_generation(buf);
-		if (header_owner != BTRFS_TREE_LOG_OBJECTID &&
-		    header_transid == trans->transid &&
-		    !btrfs_header_flag(buf, BTRFS_HEADER_FLAG_WRITTEN)) {
-			*must_clean = buf;
-			return 1;
+		idx = trans->transid & 0x1;
+		if (block_rsv->freed[idx] > 0) {
+			block_rsv_add_bytes(block_rsv,
+					    block_rsv->freed[idx], 0);
+			block_rsv->freed[idx] = 0;
 		}
-		btrfs_tree_unlock(buf);
-	}
-	free_extent_buffer(buf);
-pinit:
-	if (path)
-		btrfs_set_path_blocking(path);
-	/* unlocks the pinned mutex */
-	btrfs_pin_extent(root, bytenr, num_bytes, reserved);
+		if (atomic_read(&block_rsv->usage) == 0) {
+			btrfs_block_rsv_release(root, block_rsv, (u64)-1);
 
-	BUG_ON(err < 0);
+			if (block_rsv->freed[0] == 0 &&
+			    block_rsv->freed[1] == 0) {
+				list_del_init(&block_rsv->list);
+				kfree(block_rsv);
+			}
+		} else {
+			btrfs_block_rsv_release(root, block_rsv, 0);
+		}
+	}
+	mutex_unlock(&fs_info->durable_block_rsv_mutex);
+
 	return 0;
 }
 
@@ -3902,9 +4228,6 @@
 			BUG_ON(ret);
 		}
 	} else {
-		int mark_free = 0;
-		struct extent_buffer *must_clean = NULL;
-
 		if (found_extent) {
 			BUG_ON(is_data && refs_to_drop !=
 			       extent_data_ref_count(root, path, iref));
@@ -3917,31 +4240,11 @@
 			}
 		}
 
-		ret = pin_down_bytes(trans, root, path, bytenr,
-				     num_bytes, is_data, 0, &must_clean);
-		if (ret > 0)
-			mark_free = 1;
-		BUG_ON(ret < 0);
-		/*
-		 * it is going to be very rare for someone to be waiting
-		 * on the block we're freeing.  del_items might need to
-		 * schedule, so rather than get fancy, just force it
-		 * to blocking here
-		 */
-		if (must_clean)
-			btrfs_set_lock_blocking(must_clean);
-
 		ret = btrfs_del_items(trans, extent_root, path, path->slots[0],
 				      num_to_del);
 		BUG_ON(ret);
 		btrfs_release_path(extent_root, path);
 
-		if (must_clean) {
-			clean_tree_block(NULL, root, must_clean);
-			btrfs_tree_unlock(must_clean);
-			free_extent_buffer(must_clean);
-		}
-
 		if (is_data) {
 			ret = btrfs_del_csums(trans, root, bytenr, num_bytes);
 			BUG_ON(ret);
@@ -3951,8 +4254,7 @@
 			     (bytenr + num_bytes - 1) >> PAGE_CACHE_SHIFT);
 		}
 
-		ret = update_block_group(trans, root, bytenr, num_bytes, 0,
-					 mark_free);
+		ret = update_block_group(trans, root, bytenr, num_bytes, 0);
 		BUG_ON(ret);
 	}
 	btrfs_free_path(path);
@@ -3960,7 +4262,7 @@
 }
 
 /*
- * when we free an extent, it is possible (and likely) that we free the last
+ * when we free an block, it is possible (and likely) that we free the last
  * delayed ref for that extent as well.  This searches the delayed ref tree for
  * a given extent, and if there are no other delayed refs to be processed, it
  * removes it from the tree.
@@ -3972,7 +4274,7 @@
 	struct btrfs_delayed_ref_root *delayed_refs;
 	struct btrfs_delayed_ref_node *ref;
 	struct rb_node *node;
-	int ret;
+	int ret = 0;
 
 	delayed_refs = &trans->transaction->delayed_refs;
 	spin_lock(&delayed_refs->lock);
@@ -4024,17 +4326,99 @@
 	list_del_init(&head->cluster);
 	spin_unlock(&delayed_refs->lock);
 
-	ret = run_one_delayed_ref(trans, root->fs_info->tree_root,
-				  &head->node, head->extent_op,
-				  head->must_insert_reserved);
-	BUG_ON(ret);
+	BUG_ON(head->extent_op);
+	if (head->must_insert_reserved)
+		ret = 1;
+
+	mutex_unlock(&head->mutex);
 	btrfs_put_delayed_ref(&head->node);
-	return 0;
+	return ret;
 out:
 	spin_unlock(&delayed_refs->lock);
 	return 0;
 }
 
+void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
+			   struct btrfs_root *root,
+			   struct extent_buffer *buf,
+			   u64 parent, int last_ref)
+{
+	struct btrfs_block_rsv *block_rsv;
+	struct btrfs_block_group_cache *cache = NULL;
+	int ret;
+
+	if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
+		ret = btrfs_add_delayed_tree_ref(trans, buf->start, buf->len,
+						parent, root->root_key.objectid,
+						btrfs_header_level(buf),
+						BTRFS_DROP_DELAYED_REF, NULL);
+		BUG_ON(ret);
+	}
+
+	if (!last_ref)
+		return;
+
+	block_rsv = get_block_rsv(trans, root);
+	cache = btrfs_lookup_block_group(root->fs_info, buf->start);
+	BUG_ON(block_rsv->space_info != cache->space_info);
+
+	if (btrfs_header_generation(buf) == trans->transid) {
+		if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
+			ret = check_ref_cleanup(trans, root, buf->start);
+			if (!ret)
+				goto pin;
+		}
+
+		if (btrfs_header_flag(buf, BTRFS_HEADER_FLAG_WRITTEN)) {
+			pin_down_extent(root, cache, buf->start, buf->len, 1);
+			goto pin;
+		}
+
+		WARN_ON(test_bit(EXTENT_BUFFER_DIRTY, &buf->bflags));
+
+		btrfs_add_free_space(cache, buf->start, buf->len);
+		ret = update_reserved_bytes(cache, buf->len, 0, 0);
+		if (ret == -EAGAIN) {
+			/* block group became read-only */
+			update_reserved_bytes(cache, buf->len, 0, 1);
+			goto out;
+		}
+
+		ret = 1;
+		spin_lock(&block_rsv->lock);
+		if (block_rsv->reserved < block_rsv->size) {
+			block_rsv->reserved += buf->len;
+			ret = 0;
+		}
+		spin_unlock(&block_rsv->lock);
+
+		if (ret) {
+			spin_lock(&cache->space_info->lock);
+			cache->space_info->bytes_reserved -= buf->len;
+			spin_unlock(&cache->space_info->lock);
+		}
+		goto out;
+	}
+pin:
+	if (block_rsv->durable && !cache->ro) {
+		ret = 0;
+		spin_lock(&cache->lock);
+		if (!cache->ro) {
+			cache->reserved_pinned += buf->len;
+			ret = 1;
+		}
+		spin_unlock(&cache->lock);
+
+		if (ret) {
+			spin_lock(&block_rsv->lock);
+			block_rsv->freed[trans->transid & 0x1] += buf->len;
+			spin_unlock(&block_rsv->lock);
+		}
+	}
+out:
+	btrfs_put_block_group(cache);
+}
+
 int btrfs_free_extent(struct btrfs_trans_handle *trans,
 		      struct btrfs_root *root,
 		      u64 bytenr, u64 num_bytes, u64 parent,
@@ -4056,8 +4440,6 @@
 					parent, root_objectid, (int)owner,
 					BTRFS_DROP_DELAYED_REF, NULL);
 		BUG_ON(ret);
-		ret = check_ref_cleanup(trans, root, bytenr);
-		BUG_ON(ret);
 	} else {
 		ret = btrfs_add_delayed_data_ref(trans, bytenr, num_bytes,
 					parent, root_objectid, owner,
@@ -4067,21 +4449,6 @@
 	return ret;
 }
 
-int btrfs_free_tree_block(struct btrfs_trans_handle *trans,
-			  struct btrfs_root *root,
-			  u64 bytenr, u32 blocksize,
-			  u64 parent, u64 root_objectid, int level)
-{
-	u64 used;
-	spin_lock(&root->node_lock);
-	used = btrfs_root_used(&root->root_item) - blocksize;
-	btrfs_set_root_used(&root->root_item, used);
-	spin_unlock(&root->node_lock);
-
-	return btrfs_free_extent(trans, root, bytenr, blocksize,
-				 parent, root_objectid, level, 0);
-}
-
 static u64 stripe_align(struct btrfs_root *root, u64 val)
 {
 	u64 mask = ((u64)root->stripesize - 1);
@@ -4134,6 +4501,22 @@
 	return 0;
 }
 
+static int get_block_group_index(struct btrfs_block_group_cache *cache)
+{
+	int index;
+	if (cache->flags & BTRFS_BLOCK_GROUP_RAID10)
+		index = 0;
+	else if (cache->flags & BTRFS_BLOCK_GROUP_RAID1)
+		index = 1;
+	else if (cache->flags & BTRFS_BLOCK_GROUP_DUP)
+		index = 2;
+	else if (cache->flags & BTRFS_BLOCK_GROUP_RAID0)
+		index = 3;
+	else
+		index = 4;
+	return index;
+}
+
 enum btrfs_loop_type {
 	LOOP_FIND_IDEAL = 0,
 	LOOP_CACHING_NOWAIT = 1,
@@ -4155,7 +4538,6 @@
 				     u64 num_bytes, u64 empty_size,
 				     u64 search_start, u64 search_end,
 				     u64 hint_byte, struct btrfs_key *ins,
-				     u64 exclude_start, u64 exclude_nr,
 				     int data)
 {
 	int ret = 0;
@@ -4168,6 +4550,7 @@
 	struct btrfs_space_info *space_info;
 	int last_ptr_loop = 0;
 	int loop = 0;
+	int index = 0;
 	bool found_uncached_bg = false;
 	bool failed_cluster_refill = false;
 	bool failed_alloc = false;
@@ -4237,6 +4620,7 @@
 				btrfs_put_block_group(block_group);
 				up_read(&space_info->groups_sem);
 			} else {
+				index = get_block_group_index(block_group);
 				goto have_block_group;
 			}
 		} else if (block_group) {
@@ -4245,7 +4629,8 @@
 	}
 search:
 	down_read(&space_info->groups_sem);
-	list_for_each_entry(block_group, &space_info->block_groups, list) {
+	list_for_each_entry(block_group, &space_info->block_groups[index],
+			    list) {
 		u64 offset;
 		int cached;
 
@@ -4436,23 +4821,6 @@
 			goto loop;
 		}
 
-		if (exclude_nr > 0 &&
-		    (search_start + num_bytes > exclude_start &&
-		     search_start < exclude_start + exclude_nr)) {
-			search_start = exclude_start + exclude_nr;
-
-			btrfs_add_free_space(block_group, offset, num_bytes);
-			/*
-			 * if search_start is still in this block group
-			 * then we just re-search this block group
-			 */
-			if (search_start >= block_group->key.objectid &&
-			    search_start < (block_group->key.objectid +
-					    block_group->key.offset))
-				goto have_block_group;
-			goto loop;
-		}
-
 		ins->objectid = search_start;
 		ins->offset = num_bytes;
 
@@ -4461,17 +4829,33 @@
 					     search_start - offset);
 		BUG_ON(offset > search_start);
 
-		update_reserved_extents(block_group, num_bytes, 1);
+		ret = update_reserved_bytes(block_group, num_bytes, 1,
+					    (data & BTRFS_BLOCK_GROUP_DATA));
+		if (ret == -EAGAIN) {
+			btrfs_add_free_space(block_group, offset, num_bytes);
+			goto loop;
+		}
 
 		/* we are all good, lets return */
+		ins->objectid = search_start;
+		ins->offset = num_bytes;
+
+		if (offset < search_start)
+			btrfs_add_free_space(block_group, offset,
+					     search_start - offset);
+		BUG_ON(offset > search_start);
 		break;
 loop:
 		failed_cluster_refill = false;
 		failed_alloc = false;
+		BUG_ON(index != get_block_group_index(block_group));
 		btrfs_put_block_group(block_group);
 	}
 	up_read(&space_info->groups_sem);
 
+	if (!ins->objectid && ++index < BTRFS_NR_RAID_TYPES)
+		goto search;
+
 	/* LOOP_FIND_IDEAL, only search caching/cached bg's, and don't wait for
 	 *			for them to make caching progress.  Also
 	 *			determine the best possible bg to cache
@@ -4485,6 +4869,7 @@
 	if (!ins->objectid && loop < LOOP_NO_EMPTY_SIZE &&
 	    (found_uncached_bg || empty_size || empty_cluster ||
 	     allowed_chunk_alloc)) {
+		index = 0;
 		if (loop == LOOP_FIND_IDEAL && found_uncached_bg) {
 			found_uncached_bg = false;
 			loop++;
@@ -4567,31 +4952,30 @@
 			    int dump_block_groups)
 {
 	struct btrfs_block_group_cache *cache;
+	int index = 0;
 
 	spin_lock(&info->lock);
 	printk(KERN_INFO "space_info has %llu free, is %sfull\n",
 	       (unsigned long long)(info->total_bytes - info->bytes_used -
 				    info->bytes_pinned - info->bytes_reserved -
-				    info->bytes_super),
+				    info->bytes_readonly),
 	       (info->full) ? "" : "not ");
-	printk(KERN_INFO "space_info total=%llu, pinned=%llu, delalloc=%llu,"
-	       " may_use=%llu, used=%llu, root=%llu, super=%llu, reserved=%llu"
-	       "\n",
+	printk(KERN_INFO "space_info total=%llu, used=%llu, pinned=%llu, "
+	       "reserved=%llu, may_use=%llu, readonly=%llu\n",
 	       (unsigned long long)info->total_bytes,
-	       (unsigned long long)info->bytes_pinned,
-	       (unsigned long long)info->bytes_delalloc,
-	       (unsigned long long)info->bytes_may_use,
 	       (unsigned long long)info->bytes_used,
-	       (unsigned long long)info->bytes_root,
-	       (unsigned long long)info->bytes_super,
-	       (unsigned long long)info->bytes_reserved);
+	       (unsigned long long)info->bytes_pinned,
+	       (unsigned long long)info->bytes_reserved,
+	       (unsigned long long)info->bytes_may_use,
+	       (unsigned long long)info->bytes_readonly);
 	spin_unlock(&info->lock);
 
 	if (!dump_block_groups)
 		return;
 
 	down_read(&info->groups_sem);
-	list_for_each_entry(cache, &info->block_groups, list) {
+again:
+	list_for_each_entry(cache, &info->block_groups[index], list) {
 		spin_lock(&cache->lock);
 		printk(KERN_INFO "block group %llu has %llu bytes, %llu used "
 		       "%llu pinned %llu reserved\n",
@@ -4603,6 +4987,8 @@
 		btrfs_dump_free_space(cache, bytes);
 		spin_unlock(&cache->lock);
 	}
+	if (++index < BTRFS_NR_RAID_TYPES)
+		goto again;
 	up_read(&info->groups_sem);
 }
 
@@ -4628,9 +5014,8 @@
 
 	WARN_ON(num_bytes < root->sectorsize);
 	ret = find_free_extent(trans, root, num_bytes, empty_size,
-			       search_start, search_end, hint_byte, ins,
-			       trans->alloc_exclude_start,
-			       trans->alloc_exclude_nr, data);
+			       search_start, search_end, hint_byte,
+			       ins, data);
 
 	if (ret == -ENOSPC && num_bytes > min_alloc_size) {
 		num_bytes = num_bytes >> 1;
@@ -4668,7 +5053,7 @@
 	ret = btrfs_discard_extent(root, start, len);
 
 	btrfs_add_free_space(cache, start, len);
-	update_reserved_extents(cache, len, 0);
+	update_reserved_bytes(cache, len, 0, 1);
 	btrfs_put_block_group(cache);
 
 	return ret;
@@ -4731,8 +5116,7 @@
 	btrfs_mark_buffer_dirty(path->nodes[0]);
 	btrfs_free_path(path);
 
-	ret = update_block_group(trans, root, ins->objectid, ins->offset,
-				 1, 0);
+	ret = update_block_group(trans, root, ins->objectid, ins->offset, 1);
 	if (ret) {
 		printk(KERN_ERR "btrfs update block group failed for %llu "
 		       "%llu\n", (unsigned long long)ins->objectid,
@@ -4792,8 +5176,7 @@
 	btrfs_mark_buffer_dirty(leaf);
 	btrfs_free_path(path);
 
-	ret = update_block_group(trans, root, ins->objectid, ins->offset,
-				 1, 0);
+	ret = update_block_group(trans, root, ins->objectid, ins->offset, 1);
 	if (ret) {
 		printk(KERN_ERR "btrfs update block group failed for %llu "
 		       "%llu\n", (unsigned long long)ins->objectid,
@@ -4869,73 +5252,14 @@
 		put_caching_control(caching_ctl);
 	}
 
-	update_reserved_extents(block_group, ins->offset, 1);
+	ret = update_reserved_bytes(block_group, ins->offset, 1, 1);
+	BUG_ON(ret);
 	btrfs_put_block_group(block_group);
 	ret = alloc_reserved_file_extent(trans, root, 0, root_objectid,
 					 0, owner, offset, ins, 1);
 	return ret;
 }
 
-/*
- * finds a free extent and does all the dirty work required for allocation
- * returns the key for the extent through ins, and a tree buffer for
- * the first block of the extent through buf.
- *
- * returns 0 if everything worked, non-zero otherwise.
- */
-static int alloc_tree_block(struct btrfs_trans_handle *trans,
-			    struct btrfs_root *root,
-			    u64 num_bytes, u64 parent, u64 root_objectid,
-			    struct btrfs_disk_key *key, int level,
-			    u64 empty_size, u64 hint_byte, u64 search_end,
-			    struct btrfs_key *ins)
-{
-	int ret;
-	u64 flags = 0;
-
-	ret = btrfs_reserve_extent(trans, root, num_bytes, num_bytes,
-				   empty_size, hint_byte, search_end,
-				   ins, 0);
-	if (ret)
-		return ret;
-
-	if (root_objectid == BTRFS_TREE_RELOC_OBJECTID) {
-		if (parent == 0)
-			parent = ins->objectid;
-		flags |= BTRFS_BLOCK_FLAG_FULL_BACKREF;
-	} else
-		BUG_ON(parent > 0);
-
-	if (root_objectid != BTRFS_TREE_LOG_OBJECTID) {
-		struct btrfs_delayed_extent_op *extent_op;
-		extent_op = kmalloc(sizeof(*extent_op), GFP_NOFS);
-		BUG_ON(!extent_op);
-		if (key)
-			memcpy(&extent_op->key, key, sizeof(extent_op->key));
-		else
-			memset(&extent_op->key, 0, sizeof(extent_op->key));
-		extent_op->flags_to_set = flags;
-		extent_op->update_key = 1;
-		extent_op->update_flags = 1;
-		extent_op->is_data = 0;
-
-		ret = btrfs_add_delayed_tree_ref(trans, ins->objectid,
-					ins->offset, parent, root_objectid,
-					level, BTRFS_ADD_DELAYED_EXTENT,
-					extent_op);
-		BUG_ON(ret);
-	}
-
-	if (root_objectid == root->root_key.objectid) {
-		u64 used;
-		spin_lock(&root->node_lock);
-		used = btrfs_root_used(&root->root_item) + num_bytes;
-		btrfs_set_root_used(&root->root_item, used);
-		spin_unlock(&root->node_lock);
-	}
-	return ret;
-}
-
 struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
 					    struct btrfs_root *root,
 					    u64 bytenr, u32 blocksize,
@@ -4974,8 +5298,45 @@
 	return buf;
 }
 
+static struct btrfs_block_rsv *
+use_block_rsv(struct btrfs_trans_handle *trans,
+	      struct btrfs_root *root, u32 blocksize)
+{
+	struct btrfs_block_rsv *block_rsv;
+	int ret;
+
+	block_rsv = get_block_rsv(trans, root);
+
+	if (block_rsv->size == 0) {
+		ret = reserve_metadata_bytes(block_rsv, blocksize);
+		if (ret)
+			return ERR_PTR(ret);
+		return block_rsv;
+	}
+
+	ret = block_rsv_use_bytes(block_rsv, blocksize);
+	if (!ret)
+		return block_rsv;
+
+	WARN_ON(1);
+	printk(KERN_INFO"block_rsv size %llu reserved %llu freed %llu %llu\n",
+		block_rsv->size, block_rsv->reserved,
+		block_rsv->freed[0], block_rsv->freed[1]);
+
+	return ERR_PTR(-ENOSPC);
+}
+
+static void unuse_block_rsv(struct btrfs_block_rsv *block_rsv, u32 blocksize)
+{
+	block_rsv_add_bytes(block_rsv, blocksize, 0);
+	block_rsv_release_bytes(block_rsv, NULL, 0);
+}
+
 /*
- * helper function to allocate a block for a given tree
+ * finds a free extent and does all the dirty work required for allocation
+ * returns the key for the extent through ins, and a tree buffer for
+ * the first block of the extent through buf.
+ *
  * returns the tree buffer or NULL.
  */
 struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
@@ -4985,18 +5346,53 @@
 					u64 hint, u64 empty_size)
 {
 	struct btrfs_key ins;
-	int ret;
+	struct btrfs_block_rsv *block_rsv;
 	struct extent_buffer *buf;
+	u64 flags = 0;
+	int ret;
 
-	ret = alloc_tree_block(trans, root, blocksize, parent, root_objectid,
-			       key, level, empty_size, hint, (u64)-1, &ins);
+
+	block_rsv = use_block_rsv(trans, root, blocksize);
+	if (IS_ERR(block_rsv))
+		return ERR_CAST(block_rsv);
+
+	ret = btrfs_reserve_extent(trans, root, blocksize, blocksize,
+				   empty_size, hint, (u64)-1, &ins, 0);
 	if (ret) {
-		BUG_ON(ret > 0);
+		unuse_block_rsv(block_rsv, blocksize);
 		return ERR_PTR(ret);
 	}
 
 	buf = btrfs_init_new_buffer(trans, root, ins.objectid,
 				    blocksize, level);
+	BUG_ON(IS_ERR(buf));
+
+	if (root_objectid == BTRFS_TREE_RELOC_OBJECTID) {
+		if (parent == 0)
+			parent = ins.objectid;
+		flags |= BTRFS_BLOCK_FLAG_FULL_BACKREF;
+	} else
+		BUG_ON(parent > 0);
+
+	if (root_objectid != BTRFS_TREE_LOG_OBJECTID) {
+		struct btrfs_delayed_extent_op *extent_op;
+		extent_op = kmalloc(sizeof(*extent_op), GFP_NOFS);
+		BUG_ON(!extent_op);
+		if (key)
+			memcpy(&extent_op->key, key, sizeof(extent_op->key));
+		else
+			memset(&extent_op->key, 0, sizeof(extent_op->key));
+		extent_op->flags_to_set = flags;
+		extent_op->update_key = 1;
+		extent_op->update_flags = 1;
+		extent_op->is_data = 0;
+
+		ret = btrfs_add_delayed_tree_ref(trans, ins.objectid,
+					ins.offset, parent, root_objectid,
+					level, BTRFS_ADD_DELAYED_EXTENT,
+					extent_op);
+		BUG_ON(ret);
+	}
 	return buf;
 }
 
@@ -5321,7 +5717,7 @@
 				 struct btrfs_path *path,
 				 struct walk_control *wc)
 {
-	int ret = 0;
+	int ret;
 	int level = wc->level;
 	struct extent_buffer *eb = path->nodes[level];
 	u64 parent = 0;
@@ -5399,13 +5795,11 @@
 			       btrfs_header_owner(path->nodes[level + 1]));
 	}
 
-	ret = btrfs_free_extent(trans, root, eb->start, eb->len, parent,
-				root->root_key.objectid, level, 0);
-	BUG_ON(ret);
+	btrfs_free_tree_block(trans, root, eb, parent, wc->refs[level] == 1);
 out:
 	wc->refs[level] = 0;
 	wc->flags[level] = 0;
-	return ret;
+	return 0;
 }
 
 static noinline int walk_down_tree(struct btrfs_trans_handle *trans,
@@ -5483,7 +5877,8 @@
  * also make sure backrefs for the shared block and all lower level
  * blocks are properly updated.
  */
-int btrfs_drop_snapshot(struct btrfs_root *root, int update_ref)
+int btrfs_drop_snapshot(struct btrfs_root *root,
+			struct btrfs_block_rsv *block_rsv, int update_ref)
 {
 	struct btrfs_path *path;
 	struct btrfs_trans_handle *trans;
@@ -5501,7 +5896,9 @@
 	wc = kzalloc(sizeof(*wc), GFP_NOFS);
 	BUG_ON(!wc);
 
-	trans = btrfs_start_transaction(tree_root, 1);
+	trans = btrfs_start_transaction(tree_root, 0);
+	if (block_rsv)
+		trans->block_rsv = block_rsv;
 
 	if (btrfs_disk_key_objectid(&root_item->drop_progress) == 0) {
 		level = btrfs_header_level(root->node);
@@ -5589,22 +5986,16 @@
 		}
 
 		BUG_ON(wc->level == 0);
-		if (trans->transaction->in_commit ||
-		    trans->transaction->delayed_refs.flushing) {
+		if (btrfs_should_end_transaction(trans, tree_root)) {
 			ret = btrfs_update_root(trans, tree_root,
 						&root->root_key,
 						root_item);
 			BUG_ON(ret);
 
-			btrfs_end_transaction(trans, tree_root);
-			trans = btrfs_start_transaction(tree_root, 1);
-		} else {
-			unsigned long update;
-			update = trans->delayed_ref_updates;
-			trans->delayed_ref_updates = 0;
-			if (update)
-				btrfs_run_delayed_refs(trans, tree_root,
-						       update);
+			btrfs_end_transaction_throttle(trans, tree_root);
+			trans = btrfs_start_transaction(tree_root, 0);
+			if (block_rsv)
+				trans->block_rsv = block_rsv;
 		}
 	}
 	btrfs_release_path(root, path);
@@ -5632,7 +6023,7 @@
 		kfree(root);
 	}
 out:
-	btrfs_end_transaction(trans, tree_root);
+	btrfs_end_transaction_throttle(trans, tree_root);
 	kfree(wc);
 	btrfs_free_path(path);
 	return err;
@@ -7228,48 +7619,80 @@
 	return flags;
 }
 
-static int __alloc_chunk_for_shrink(struct btrfs_root *root,
-		     struct btrfs_block_group_cache *shrink_block_group,
-		     int force)
+static int set_block_group_ro(struct btrfs_block_group_cache *cache)
 {
-	struct btrfs_trans_handle *trans;
-	u64 new_alloc_flags;
-	u64 calc;
+	struct btrfs_space_info *sinfo = cache->space_info;
+	u64 num_bytes;
+	int ret = -ENOSPC;
 
-	spin_lock(&shrink_block_group->lock);
-	if (btrfs_block_group_used(&shrink_block_group->item) +
-	    shrink_block_group->reserved > 0) {
-		spin_unlock(&shrink_block_group->lock);
+	if (cache->ro)
+		return 0;
 
-		trans = btrfs_start_transaction(root, 1);
-		spin_lock(&shrink_block_group->lock);
+	spin_lock(&sinfo->lock);
+	spin_lock(&cache->lock);
+	num_bytes = cache->key.offset - cache->reserved - cache->pinned -
+		    cache->bytes_super - btrfs_block_group_used(&cache->item);
 
-		new_alloc_flags = update_block_group_flags(root,
-						   shrink_block_group->flags);
-		if (new_alloc_flags != shrink_block_group->flags) {
-			calc =
-			     btrfs_block_group_used(&shrink_block_group->item);
-		} else {
-			calc = shrink_block_group->key.offset;
-		}
-		spin_unlock(&shrink_block_group->lock);
-
-		do_chunk_alloc(trans, root->fs_info->extent_root,
-			       calc + 2 * 1024 * 1024, new_alloc_flags, force);
-
-		btrfs_end_transaction(trans, root);
-	} else
-		spin_unlock(&shrink_block_group->lock);
-	return 0;
+	if (sinfo->bytes_used + sinfo->bytes_reserved + sinfo->bytes_pinned +
+	    sinfo->bytes_may_use + sinfo->bytes_readonly +
+	    cache->reserved_pinned + num_bytes < sinfo->total_bytes) {
+		sinfo->bytes_readonly += num_bytes;
+		sinfo->bytes_reserved += cache->reserved_pinned;
+		cache->reserved_pinned = 0;
+		cache->ro = 1;
+		ret = 0;
+	}
+	spin_unlock(&cache->lock);
+	spin_unlock(&sinfo->lock);
+	return ret;
 }
 
-
-int btrfs_prepare_block_group_relocation(struct btrfs_root *root,
-					 struct btrfs_block_group_cache *group)
+int btrfs_set_block_group_ro(struct btrfs_root *root,
+			     struct btrfs_block_group_cache *cache)
 
 {
-	__alloc_chunk_for_shrink(root, group, 1);
-	set_block_group_readonly(group);
+	struct btrfs_trans_handle *trans;
+	u64 alloc_flags;
+	int ret;
+
+	BUG_ON(cache->ro);
+
+	trans = btrfs_join_transaction(root, 1);
+	BUG_ON(IS_ERR(trans));
+
+	alloc_flags = update_block_group_flags(root, cache->flags);
+	if (alloc_flags != cache->flags)
+		do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, 1);
+
+	ret = set_block_group_ro(cache);
+	if (!ret)
+		goto out;
+	alloc_flags = get_alloc_profile(root, cache->space_info->flags);
+	ret = do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags, 1);
+	if (ret < 0)
+		goto out;
+	ret = set_block_group_ro(cache);
+out:
+	btrfs_end_transaction(trans, root);
+	return ret;
+}
+
+int btrfs_set_block_group_rw(struct btrfs_root *root,
+			      struct btrfs_block_group_cache *cache)
+{
+	struct btrfs_space_info *sinfo = cache->space_info;
+	u64 num_bytes;
+
+	BUG_ON(!cache->ro);
+
+	spin_lock(&sinfo->lock);
+	spin_lock(&cache->lock);
+	num_bytes = cache->key.offset - cache->reserved - cache->pinned -
+		    cache->bytes_super - btrfs_block_group_used(&cache->item);
+	sinfo->bytes_readonly -= num_bytes;
+	cache->ro = 0;
+	spin_unlock(&cache->lock);
+	spin_unlock(&sinfo->lock);
 	return 0;
 }
 
@@ -7436,17 +7859,33 @@
 	 */
 	synchronize_rcu();
 
+	release_global_block_rsv(info);
+
 	while(!list_empty(&info->space_info)) {
 		space_info = list_entry(info->space_info.next,
 					struct btrfs_space_info,
 					list);
-
+		if (space_info->bytes_pinned > 0 ||
+		    space_info->bytes_reserved > 0) {
+			WARN_ON(1);
+			dump_space_info(space_info, 0, 0);
+		}
 		list_del(&space_info->list);
 		kfree(space_info);
 	}
 	return 0;
 }
 
+static void __link_block_group(struct btrfs_space_info *space_info,
+			       struct btrfs_block_group_cache *cache)
+{
+	int index = get_block_group_index(cache);
+
+	down_write(&space_info->groups_sem);
+	list_add_tail(&cache->list, &space_info->block_groups[index]);
+	up_write(&space_info->groups_sem);
+}
+
 int btrfs_read_block_groups(struct btrfs_root *root)
 {
 	struct btrfs_path *path;
@@ -7468,10 +7907,8 @@
 
 	while (1) {
 		ret = find_first_block_group(root, path, &key);
-		if (ret > 0) {
-			ret = 0;
-			goto error;
-		}
+		if (ret > 0)
+			break;
 		if (ret != 0)
 			goto error;
 
@@ -7480,7 +7917,7 @@
 		cache = kzalloc(sizeof(*cache), GFP_NOFS);
 		if (!cache) {
 			ret = -ENOMEM;
-			break;
+			goto error;
 		}
 
 		atomic_set(&cache->count, 1);
@@ -7537,20 +7974,36 @@
 		BUG_ON(ret);
 		cache->space_info = space_info;
 		spin_lock(&cache->space_info->lock);
-		cache->space_info->bytes_super += cache->bytes_super;
+		cache->space_info->bytes_readonly += cache->bytes_super;
 		spin_unlock(&cache->space_info->lock);
 
-		down_write(&space_info->groups_sem);
-		list_add_tail(&cache->list, &space_info->block_groups);
-		up_write(&space_info->groups_sem);
+		__link_block_group(space_info, cache);
 
 		ret = btrfs_add_block_group_cache(root->fs_info, cache);
 		BUG_ON(ret);
 
 		set_avail_alloc_bits(root->fs_info, cache->flags);
 		if (btrfs_chunk_readonly(root, cache->key.objectid))
-			set_block_group_readonly(cache);
+			set_block_group_ro(cache);
 	}
+
+	list_for_each_entry_rcu(space_info, &root->fs_info->space_info, list) {
+		if (!(get_alloc_profile(root, space_info->flags) &
+		      (BTRFS_BLOCK_GROUP_RAID10 |
+		       BTRFS_BLOCK_GROUP_RAID1 |
+		       BTRFS_BLOCK_GROUP_DUP)))
+			continue;
+		/*
+		 * avoid allocating from un-mirrored block group if there are
+		 * mirrored block groups.
+		 */
+		list_for_each_entry(cache, &space_info->block_groups[3], list)
+			set_block_group_ro(cache);
+		list_for_each_entry(cache, &space_info->block_groups[4], list)
+			set_block_group_ro(cache);
+	}
+
+	init_global_block_rsv(info);
 	ret = 0;
 error:
 	btrfs_free_path(path);
@@ -7611,12 +8064,10 @@
 	BUG_ON(ret);
 
 	spin_lock(&cache->space_info->lock);
-	cache->space_info->bytes_super += cache->bytes_super;
+	cache->space_info->bytes_readonly += cache->bytes_super;
 	spin_unlock(&cache->space_info->lock);
 
-	down_write(&cache->space_info->groups_sem);
-	list_add_tail(&cache->list, &cache->space_info->block_groups);
-	up_write(&cache->space_info->groups_sem);
+	__link_block_group(cache->space_info, cache);
 
 	ret = btrfs_add_block_group_cache(root->fs_info, cache);
 	BUG_ON(ret);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index d2d0368..a4080c2 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -135,7 +135,7 @@
 	return state;
 }
 
-static void free_extent_state(struct extent_state *state)
+void free_extent_state(struct extent_state *state)
 {
 	if (!state)
 		return;
@@ -335,21 +335,18 @@
 }
 
 static int set_state_cb(struct extent_io_tree *tree,
-			 struct extent_state *state,
-			 unsigned long bits)
+			 struct extent_state *state, int *bits)
 {
 	if (tree->ops && tree->ops->set_bit_hook) {
 		return tree->ops->set_bit_hook(tree->mapping->host,
-					       state->start, state->end,
-					       state->state, bits);
+					       state, bits);
 	}
 
 	return 0;
 }
 
 static void clear_state_cb(struct extent_io_tree *tree,
-			   struct extent_state *state,
-			   unsigned long bits)
+			   struct extent_state *state, int *bits)
 {
 	if (tree->ops && tree->ops->clear_bit_hook)
 		tree->ops->clear_bit_hook(tree->mapping->host, state, bits);
@@ -367,9 +364,10 @@
  */
 static int insert_state(struct extent_io_tree *tree,
 			struct extent_state *state, u64 start, u64 end,
-			int bits)
+			int *bits)
 {
 	struct rb_node *node;
+	int bits_to_set = *bits & ~EXTENT_CTLBITS;
 	int ret;
 
 	if (end < start) {
@@ -384,9 +382,9 @@
 	if (ret)
 		return ret;
 
-	if (bits & EXTENT_DIRTY)
+	if (bits_to_set & EXTENT_DIRTY)
 		tree->dirty_bytes += end - start + 1;
-	state->state |= bits;
+	state->state |= bits_to_set;
 	node = tree_insert(&tree->state, end, &state->rb_node);
 	if (node) {
 		struct extent_state *found;
@@ -456,13 +454,13 @@
  * struct is freed and removed from the tree
  */
 static int clear_state_bit(struct extent_io_tree *tree,
-			    struct extent_state *state, int bits, int wake,
-			    int delete)
+			    struct extent_state *state,
+			    int *bits, int wake)
 {
-	int bits_to_clear = bits & ~EXTENT_DO_ACCOUNTING;
+	int bits_to_clear = *bits & ~EXTENT_CTLBITS;
 	int ret = state->state & bits_to_clear;
 
-	if ((bits & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) {
+	if ((bits_to_clear & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) {
 		u64 range = state->end - state->start + 1;
 		WARN_ON(range > tree->dirty_bytes);
 		tree->dirty_bytes -= range;
@@ -471,9 +469,8 @@
 	state->state &= ~bits_to_clear;
 	if (wake)
 		wake_up(&state->wq);
-	if (delete || state->state == 0) {
+	if (state->state == 0) {
 		if (state->tree) {
-			clear_state_cb(tree, state, state->state);
 			rb_erase(&state->rb_node, &tree->state);
 			state->tree = NULL;
 			free_extent_state(state);
@@ -514,6 +511,10 @@
 	int set = 0;
 	int clear = 0;
 
+	if (delete)
+		bits |= ~EXTENT_CTLBITS;
+	bits |= EXTENT_FIRST_DELALLOC;
+
 	if (bits & (EXTENT_IOBITS | EXTENT_BOUNDARY))
 		clear = 1;
 again:
@@ -580,8 +581,7 @@
 		if (err)
 			goto out;
 		if (state->end <= end) {
-			set |= clear_state_bit(tree, state, bits, wake,
-					       delete);
+			set |= clear_state_bit(tree, state, &bits, wake);
 			if (last_end == (u64)-1)
 				goto out;
 			start = last_end + 1;
@@ -602,7 +602,7 @@
 		if (wake)
 			wake_up(&state->wq);
 
-		set |= clear_state_bit(tree, prealloc, bits, wake, delete);
+		set |= clear_state_bit(tree, prealloc, &bits, wake);
 
 		prealloc = NULL;
 		goto out;
@@ -613,7 +613,7 @@
 	else
 		next_node = NULL;
 
-	set |= clear_state_bit(tree, state, bits, wake, delete);
+	set |= clear_state_bit(tree, state, &bits, wake);
 	if (last_end == (u64)-1)
 		goto out;
 	start = last_end + 1;
@@ -706,19 +706,19 @@
 
 static int set_state_bits(struct extent_io_tree *tree,
 			   struct extent_state *state,
-			   int bits)
+			   int *bits)
 {
 	int ret;
+	int bits_to_set = *bits & ~EXTENT_CTLBITS;
 
 	ret = set_state_cb(tree, state, bits);
 	if (ret)
 		return ret;
-
-	if ((bits & EXTENT_DIRTY) && !(state->state & EXTENT_DIRTY)) {
+	if ((bits_to_set & EXTENT_DIRTY) && !(state->state & EXTENT_DIRTY)) {
 		u64 range = state->end - state->start + 1;
 		tree->dirty_bytes += range;
 	}
-	state->state |= bits;
+	state->state |= bits_to_set;
 
 	return 0;
 }
@@ -745,10 +745,9 @@
  * [start, end] is inclusive This takes the tree lock.
  */
 
-static int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
-			  int bits, int exclusive_bits, u64 *failed_start,
-			  struct extent_state **cached_state,
-			  gfp_t mask)
+int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
+		   int bits, int exclusive_bits, u64 *failed_start,
+		   struct extent_state **cached_state, gfp_t mask)
 {
 	struct extent_state *state;
 	struct extent_state *prealloc = NULL;
@@ -757,6 +756,7 @@
 	u64 last_start;
 	u64 last_end;
 
+	bits |= EXTENT_FIRST_DELALLOC;
 again:
 	if (!prealloc && (mask & __GFP_WAIT)) {
 		prealloc = alloc_extent_state(mask);
@@ -778,7 +778,7 @@
 	 */
 	node = tree_search(tree, start);
 	if (!node) {
-		err = insert_state(tree, prealloc, start, end, bits);
+		err = insert_state(tree, prealloc, start, end, &bits);
 		prealloc = NULL;
 		BUG_ON(err == -EEXIST);
 		goto out;
@@ -802,7 +802,7 @@
 			goto out;
 		}
 
-		err = set_state_bits(tree, state, bits);
+		err = set_state_bits(tree, state, &bits);
 		if (err)
 			goto out;
 
@@ -852,7 +852,7 @@
 		if (err)
 			goto out;
 		if (state->end <= end) {
-			err = set_state_bits(tree, state, bits);
+			err = set_state_bits(tree, state, &bits);
 			if (err)
 				goto out;
 			cache_state(state, cached_state);
@@ -877,7 +877,7 @@
 		else
 			this_end = last_start - 1;
 		err = insert_state(tree, prealloc, start, this_end,
-				   bits);
+				   &bits);
 		BUG_ON(err == -EEXIST);
 		if (err) {
 			prealloc = NULL;
@@ -903,7 +903,7 @@
 		err = split_state(tree, state, prealloc, end + 1);
 		BUG_ON(err == -EEXIST);
 
-		err = set_state_bits(tree, prealloc, bits);
+		err = set_state_bits(tree, prealloc, &bits);
 		if (err) {
 			prealloc = NULL;
 			goto out;
@@ -966,8 +966,7 @@
 {
 	return clear_extent_bit(tree, start, end,
 				EXTENT_DIRTY | EXTENT_DELALLOC |
-				EXTENT_DO_ACCOUNTING, 0, 0,
-				NULL, mask);
+				EXTENT_DO_ACCOUNTING, 0, 0, NULL, mask);
 }
 
 int set_extent_new(struct extent_io_tree *tree, u64 start, u64 end,
@@ -1435,9 +1434,6 @@
 	if (op & EXTENT_CLEAR_DELALLOC)
 		clear_bits |= EXTENT_DELALLOC;
 
-	if (op & EXTENT_CLEAR_ACCOUNTING)
-		clear_bits |= EXTENT_DO_ACCOUNTING;
-
 	clear_extent_bit(tree, start, end, clear_bits, 1, 0, NULL, GFP_NOFS);
 	if (!(op & (EXTENT_CLEAR_UNLOCK_PAGE | EXTENT_CLEAR_DIRTY |
 		    EXTENT_SET_WRITEBACK | EXTENT_END_WRITEBACK |
@@ -1916,7 +1912,7 @@
 
 	if (tree->ops && tree->ops->submit_bio_hook)
 		tree->ops->submit_bio_hook(page->mapping->host, rw, bio,
-					   mirror_num, bio_flags);
+					   mirror_num, bio_flags, start);
 	else
 		submit_bio(rw, bio);
 	if (bio_flagged(bio, BIO_EOPNOTSUPP))
@@ -2020,6 +2016,7 @@
 	sector_t sector;
 	struct extent_map *em;
 	struct block_device *bdev;
+	struct btrfs_ordered_extent *ordered;
 	int ret;
 	int nr = 0;
 	size_t page_offset = 0;
@@ -2031,7 +2028,15 @@
 	set_page_extent_mapped(page);
 
 	end = page_end;
-	lock_extent(tree, start, end, GFP_NOFS);
+	while (1) {
+		lock_extent(tree, start, end, GFP_NOFS);
+		ordered = btrfs_lookup_ordered_extent(inode, start);
+		if (!ordered)
+			break;
+		unlock_extent(tree, start, end, GFP_NOFS);
+		btrfs_start_ordered_extent(inode, ordered, 1);
+		btrfs_put_ordered_extent(ordered);
+	}
 
 	if (page->index == last_byte >> PAGE_CACHE_SHIFT) {
 		char *userpage;
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index bbab481..5691c7b 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -16,7 +16,9 @@
 #define EXTENT_BOUNDARY (1 << 9)
 #define EXTENT_NODATASUM (1 << 10)
 #define EXTENT_DO_ACCOUNTING (1 << 11)
+#define EXTENT_FIRST_DELALLOC (1 << 12)
 #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
+#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC)
 
 /* flags for bio submission */
 #define EXTENT_BIO_COMPRESSED 1
@@ -47,7 +49,7 @@
 
 typedef	int (extent_submit_bio_hook_t)(struct inode *inode, int rw,
 				       struct bio *bio, int mirror_num,
-				       unsigned long bio_flags);
+				       unsigned long bio_flags, u64 bio_offset);
 struct extent_io_ops {
 	int (*fill_delalloc)(struct inode *inode, struct page *locked_page,
 			     u64 start, u64 end, int *page_started,
@@ -69,10 +71,10 @@
 				    struct extent_state *state);
 	int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end,
 				      struct extent_state *state, int uptodate);
-	int (*set_bit_hook)(struct inode *inode, u64 start, u64 end,
-			    unsigned long old, unsigned long bits);
+	int (*set_bit_hook)(struct inode *inode, struct extent_state *state,
+			    int *bits);
 	int (*clear_bit_hook)(struct inode *inode, struct extent_state *state,
-			      unsigned long bits);
+			      int *bits);
 	int (*merge_extent_hook)(struct inode *inode,
 				 struct extent_state *new,
 				 struct extent_state *other);
@@ -176,6 +178,7 @@
 		     u64 *start, u64 search_end,
 		     u64 max_bytes, unsigned long bits);
 
+void free_extent_state(struct extent_state *state);
 int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
 		   int bits, int filled, struct extent_state *cached_state);
 int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
@@ -185,6 +188,9 @@
 		     gfp_t mask);
 int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
 		    int bits, gfp_t mask);
+int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
+		   int bits, int exclusive_bits, u64 *failed_start,
+		   struct extent_state **cached_state, gfp_t mask);
 int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end,
 			gfp_t mask);
 int set_extent_new(struct extent_io_tree *tree, u64 start, u64 end,
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 54a2550..a562a25 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -149,13 +149,14 @@
 }
 
 
-int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
-			  struct bio *bio, u32 *dst)
+static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
+				   struct inode *inode, struct bio *bio,
+				   u64 logical_offset, u32 *dst, int dio)
 {
 	u32 sum;
 	struct bio_vec *bvec = bio->bi_io_vec;
 	int bio_index = 0;
-	u64 offset;
+	u64 offset = 0;
 	u64 item_start_offset = 0;
 	u64 item_last_offset = 0;
 	u64 disk_bytenr;
@@ -174,8 +175,11 @@
 	WARN_ON(bio->bi_vcnt <= 0);
 
 	disk_bytenr = (u64)bio->bi_sector << 9;
+	if (dio)
+		offset = logical_offset;
 	while (bio_index < bio->bi_vcnt) {
-		offset = page_offset(bvec->bv_page) + bvec->bv_offset;
+		if (!dio)
+			offset = page_offset(bvec->bv_page) + bvec->bv_offset;
 		ret = btrfs_find_ordered_sum(inode, offset, disk_bytenr, &sum);
 		if (ret == 0)
 			goto found;
@@ -238,6 +242,7 @@
 		else
 			set_state_private(io_tree, offset, sum);
 		disk_bytenr += bvec->bv_len;
+		offset += bvec->bv_len;
 		bio_index++;
 		bvec++;
 	}
@@ -245,6 +250,18 @@
 	return 0;
 }
 
+int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
+			  struct bio *bio, u32 *dst)
+{
+	return __btrfs_lookup_bio_sums(root, inode, bio, 0, dst, 0);
+}
+
+int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
+			      struct bio *bio, u64 offset, u32 *dst)
+{
+	return __btrfs_lookup_bio_sums(root, inode, bio, offset, dst, 1);
+}
+
 int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
 			     struct list_head *list)
 {
@@ -657,6 +674,9 @@
 		goto found;
 	}
 	ret = PTR_ERR(item);
+	if (ret != -EFBIG && ret != -ENOENT)
+		goto fail_unlock;
+
 	if (ret == -EFBIG) {
 		u32 item_size;
 		/* we found one, but it isn't big enough yet */
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 29ff749..787b50a 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -46,32 +46,42 @@
 static noinline int btrfs_copy_from_user(loff_t pos, int num_pages,
 					 int write_bytes,
 					 struct page **prepared_pages,
-					 const char __user *buf)
+					 struct iov_iter *i)
 {
-	long page_fault = 0;
-	int i;
+	size_t copied;
+	int pg = 0;
 	int offset = pos & (PAGE_CACHE_SIZE - 1);
 
-	for (i = 0; i < num_pages && write_bytes > 0; i++, offset = 0) {
+	while (write_bytes > 0) {
 		size_t count = min_t(size_t,
 				     PAGE_CACHE_SIZE - offset, write_bytes);
-		struct page *page = prepared_pages[i];
-		fault_in_pages_readable(buf, count);
+		struct page *page = prepared_pages[pg];
+again:
+		if (unlikely(iov_iter_fault_in_readable(i, count)))
+			return -EFAULT;
 
 		/* Copy data from userspace to the current page */
-		kmap(page);
-		page_fault = __copy_from_user(page_address(page) + offset,
-					      buf, count);
+		copied = iov_iter_copy_from_user(page, i, offset, count);
+
 		/* Flush processor's dcache for this page */
 		flush_dcache_page(page);
-		kunmap(page);
-		buf += count;
-		write_bytes -= count;
+		iov_iter_advance(i, copied);
+		write_bytes -= copied;
 
-		if (page_fault)
-			break;
+		if (unlikely(copied == 0)) {
+			count = min_t(size_t, PAGE_CACHE_SIZE - offset,
+				      iov_iter_single_seg_count(i));
+			goto again;
+		}
+
+		if (unlikely(copied < PAGE_CACHE_SIZE - offset)) {
+			offset += copied;
+		} else {
+			pg++;
+			offset = 0;
+		}
 	}
-	return page_fault ? -EFAULT : 0;
+	return 0;
 }
 
 /*
@@ -126,8 +136,7 @@
 	end_of_last_block = start_pos + num_bytes - 1;
 	err = btrfs_set_extent_delalloc(inode, start_pos, end_of_last_block,
 					NULL);
-	if (err)
-		return err;
+	BUG_ON(err);
 
 	for (i = 0; i < num_pages; i++) {
 		struct page *p = pages[i];
@@ -142,7 +151,7 @@
 		 * at this time.
 		 */
 	}
-	return err;
+	return 0;
 }
 
 /*
@@ -823,45 +832,46 @@
 	return 0;
 }
 
-static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
-				size_t count, loff_t *ppos)
+static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
+				    const struct iovec *iov,
+				    unsigned long nr_segs, loff_t pos)
 {
-	loff_t pos;
+	struct file *file = iocb->ki_filp;
+	struct inode *inode = fdentry(file)->d_inode;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct page *pinned[2];
+	struct page **pages = NULL;
+	struct iov_iter i;
+	loff_t *ppos = &iocb->ki_pos;
 	loff_t start_pos;
 	ssize_t num_written = 0;
 	ssize_t err = 0;
+	size_t count;
+	size_t ocount;
 	int ret = 0;
-	struct inode *inode = fdentry(file)->d_inode;
-	struct btrfs_root *root = BTRFS_I(inode)->root;
-	struct page **pages = NULL;
 	int nrptrs;
-	struct page *pinned[2];
 	unsigned long first_index;
 	unsigned long last_index;
 	int will_write;
+	int buffered = 0;
 
 	will_write = ((file->f_flags & O_DSYNC) || IS_SYNC(inode) ||
 		      (file->f_flags & O_DIRECT));
 
-	nrptrs = min((count + PAGE_CACHE_SIZE - 1) / PAGE_CACHE_SIZE,
-		     PAGE_CACHE_SIZE / (sizeof(struct page *)));
 	pinned[0] = NULL;
 	pinned[1] = NULL;
 
-	pos = *ppos;
 	start_pos = pos;
 
 	vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
 
-	/* do the reserve before the mutex lock in case we have to do some
-	 * flushing.  We wouldn't deadlock, but this is more polite.
-	 */
-	err = btrfs_reserve_metadata_for_delalloc(root, inode, 1);
-	if (err)
-		goto out_nolock;
-
 	mutex_lock(&inode->i_mutex);
 
+	err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
+	if (err)
+		goto out;
+	count = ocount;
+
 	current->backing_dev_info = inode->i_mapping->backing_dev_info;
 	err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
 	if (err)
@@ -875,15 +885,53 @@
 		goto out;
 
 	file_update_time(file);
+	BTRFS_I(inode)->sequence++;
 
+	if (unlikely(file->f_flags & O_DIRECT)) {
+		num_written = generic_file_direct_write(iocb, iov, &nr_segs,
+							pos, ppos, count,
+							ocount);
+		/*
+		 * the generic O_DIRECT will update in-memory i_size after the
+		 * DIOs are done.  But our endio handlers that update the on
+		 * disk i_size never update past the in memory i_size.  So we
+		 * need one more update here to catch any additions to the
+		 * file
+		 */
+		if (inode->i_size != BTRFS_I(inode)->disk_i_size) {
+			btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
+			mark_inode_dirty(inode);
+		}
+
+		if (num_written < 0) {
+			ret = num_written;
+			num_written = 0;
+			goto out;
+		} else if (num_written == count) {
+			/* pick up pos changes done by the generic code */
+			pos = *ppos;
+			goto out;
+		}
+		/*
+		 * We are going to do buffered for the rest of the range, so we
+		 * need to make sure to invalidate the buffered pages when we're
+		 * done.
+		 */
+		buffered = 1;
+		pos += num_written;
+	}
+
+	iov_iter_init(&i, iov, nr_segs, count, num_written);
+	nrptrs = min((iov_iter_count(&i) + PAGE_CACHE_SIZE - 1) /
+		     PAGE_CACHE_SIZE, PAGE_CACHE_SIZE /
+		     (sizeof(struct page *)));
 	pages = kmalloc(nrptrs * sizeof(struct page *), GFP_KERNEL);
 
 	/* generic_write_checks can change our pos */
 	start_pos = pos;
 
-	BTRFS_I(inode)->sequence++;
 	first_index = pos >> PAGE_CACHE_SHIFT;
-	last_index = (pos + count) >> PAGE_CACHE_SHIFT;
+	last_index = (pos + iov_iter_count(&i)) >> PAGE_CACHE_SHIFT;
 
 	/*
 	 * there are lots of better ways to do this, but this code
@@ -900,7 +948,7 @@
 			unlock_page(pinned[0]);
 		}
 	}
-	if ((pos + count) & (PAGE_CACHE_SIZE - 1)) {
+	if ((pos + iov_iter_count(&i)) & (PAGE_CACHE_SIZE - 1)) {
 		pinned[1] = grab_cache_page(inode->i_mapping, last_index);
 		if (!PageUptodate(pinned[1])) {
 			ret = btrfs_readpage(NULL, pinned[1]);
@@ -911,10 +959,10 @@
 		}
 	}
 
-	while (count > 0) {
+	while (iov_iter_count(&i) > 0) {
 		size_t offset = pos & (PAGE_CACHE_SIZE - 1);
-		size_t write_bytes = min(count, nrptrs *
-					(size_t)PAGE_CACHE_SIZE -
+		size_t write_bytes = min(iov_iter_count(&i),
+					 nrptrs * (size_t)PAGE_CACHE_SIZE -
 					 offset);
 		size_t num_pages = (write_bytes + PAGE_CACHE_SIZE - 1) >>
 					PAGE_CACHE_SHIFT;
@@ -922,7 +970,7 @@
 		WARN_ON(num_pages > nrptrs);
 		memset(pages, 0, sizeof(struct page *) * nrptrs);
 
-		ret = btrfs_check_data_free_space(root, inode, write_bytes);
+		ret = btrfs_delalloc_reserve_space(inode, write_bytes);
 		if (ret)
 			goto out;
 
@@ -930,26 +978,20 @@
 				    pos, first_index, last_index,
 				    write_bytes);
 		if (ret) {
-			btrfs_free_reserved_data_space(root, inode,
-						       write_bytes);
+			btrfs_delalloc_release_space(inode, write_bytes);
 			goto out;
 		}
 
 		ret = btrfs_copy_from_user(pos, num_pages,
-					   write_bytes, pages, buf);
-		if (ret) {
-			btrfs_free_reserved_data_space(root, inode,
-						       write_bytes);
-			btrfs_drop_pages(pages, num_pages);
-			goto out;
+					   write_bytes, pages, &i);
+		if (ret == 0) {
+			dirty_and_release_pages(NULL, root, file, pages,
+						num_pages, pos, write_bytes);
 		}
 
-		ret = dirty_and_release_pages(NULL, root, file, pages,
-					      num_pages, pos, write_bytes);
 		btrfs_drop_pages(pages, num_pages);
 		if (ret) {
-			btrfs_free_reserved_data_space(root, inode,
-						       write_bytes);
+			btrfs_delalloc_release_space(inode, write_bytes);
 			goto out;
 		}
 
@@ -965,8 +1007,6 @@
 			btrfs_throttle(root);
 		}
 
-		buf += write_bytes;
-		count -= write_bytes;
 		pos += write_bytes;
 		num_written += write_bytes;
 
@@ -976,9 +1016,7 @@
 	mutex_unlock(&inode->i_mutex);
 	if (ret)
 		err = ret;
-	btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
 
-out_nolock:
 	kfree(pages);
 	if (pinned[0])
 		page_cache_release(pinned[0]);
@@ -1008,7 +1046,7 @@
 			num_written = err;
 
 		if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) {
-			trans = btrfs_start_transaction(root, 1);
+			trans = btrfs_start_transaction(root, 0);
 			ret = btrfs_log_dentry_safe(trans, root,
 						    file->f_dentry);
 			if (ret == 0) {
@@ -1023,7 +1061,7 @@
 				btrfs_end_transaction(trans, root);
 			}
 		}
-		if (file->f_flags & O_DIRECT) {
+		if (file->f_flags & O_DIRECT && buffered) {
 			invalidate_mapping_pages(inode->i_mapping,
 			      start_pos >> PAGE_CACHE_SHIFT,
 			     (start_pos + num_written - 1) >> PAGE_CACHE_SHIFT);
@@ -1063,8 +1101,9 @@
  * important optimization for directories because holding the mutex prevents
  * new operations on the dir while we write to disk.
  */
-int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
+int btrfs_sync_file(struct file *file, int datasync)
 {
+	struct dentry *dentry = file->f_path.dentry;
 	struct inode *inode = dentry->d_inode;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	int ret = 0;
@@ -1104,9 +1143,9 @@
 	if (file && file->private_data)
 		btrfs_ioctl_trans_end(file);
 
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans) {
-		ret = -ENOMEM;
+	trans = btrfs_start_transaction(root, 0);
+	if (IS_ERR(trans)) {
+		ret = PTR_ERR(trans);
 		goto out;
 	}
 
@@ -1161,7 +1200,7 @@
 	.read		= do_sync_read,
 	.aio_read       = generic_file_aio_read,
 	.splice_read	= generic_file_splice_read,
-	.write		= btrfs_file_write,
+	.aio_write	= btrfs_file_aio_write,
 	.mmap		= btrfs_file_mmap,
 	.open		= generic_file_open,
 	.release	= btrfs_release_file,
diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
index 72ce3c1..64f1150 100644
--- a/fs/btrfs/inode-item.c
+++ b/fs/btrfs/inode-item.c
@@ -49,6 +49,33 @@
 	return 0;
 }
 
+struct btrfs_inode_ref *
+btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans,
+			struct btrfs_root *root,
+			struct btrfs_path *path,
+			const char *name, int name_len,
+			u64 inode_objectid, u64 ref_objectid, int mod)
+{
+	struct btrfs_key key;
+	struct btrfs_inode_ref *ref;
+	int ins_len = mod < 0 ? -1 : 0;
+	int cow = mod != 0;
+	int ret;
+
+	key.objectid = inode_objectid;
+	key.type = BTRFS_INODE_REF_KEY;
+	key.offset = ref_objectid;
+
+	ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
+	if (ret < 0)
+		return ERR_PTR(ret);
+	if (ret > 0)
+		return NULL;
+	if (!find_name_in_backref(path, name, name_len, &ref))
+		return NULL;
+	return ref;
+}
+
 int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,
 			   const char *name, int name_len,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d601629..fa6ccc1 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -252,6 +252,7 @@
 				   inline_len, compressed_size,
 				   compressed_pages);
 	BUG_ON(ret);
+	btrfs_delalloc_release_metadata(inode, end + 1 - start);
 	btrfs_drop_extent_cache(inode, start, aligned_end - 1, 0);
 	return 0;
 }
@@ -414,6 +415,7 @@
 		trans = btrfs_join_transaction(root, 1);
 		BUG_ON(!trans);
 		btrfs_set_trans_block_group(trans, inode);
+		trans->block_rsv = &root->fs_info->delalloc_block_rsv;
 
 		/* lets try to make an inline extent */
 		if (ret || total_in < (actual_end - start)) {
@@ -439,7 +441,6 @@
 			     start, end, NULL,
 			     EXTENT_CLEAR_UNLOCK_PAGE | EXTENT_CLEAR_DIRTY |
 			     EXTENT_CLEAR_DELALLOC |
-			     EXTENT_CLEAR_ACCOUNTING |
 			     EXTENT_SET_WRITEBACK | EXTENT_END_WRITEBACK);
 
 			btrfs_end_transaction(trans, root);
@@ -697,6 +698,38 @@
 	return 0;
 }
 
+static u64 get_extent_allocation_hint(struct inode *inode, u64 start,
+				      u64 num_bytes)
+{
+	struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
+	struct extent_map *em;
+	u64 alloc_hint = 0;
+
+	read_lock(&em_tree->lock);
+	em = search_extent_mapping(em_tree, start, num_bytes);
+	if (em) {
+		/*
+		 * if block start isn't an actual block number then find the
+		 * first block in this inode and use that as a hint.  If that
+		 * block is also bogus then just don't worry about it.
+		 */
+		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
+			free_extent_map(em);
+			em = search_extent_mapping(em_tree, 0, 0);
+			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)
+				alloc_hint = em->block_start;
+			if (em)
+				free_extent_map(em);
+		} else {
+			alloc_hint = em->block_start;
+			free_extent_map(em);
+		}
+	}
+	read_unlock(&em_tree->lock);
+
+	return alloc_hint;
+}
+
 /*
  * when extent_io.c finds a delayed allocation range in the file,
  * the call backs end up in this code.  The basic idea is to
@@ -734,6 +767,7 @@
 	trans = btrfs_join_transaction(root, 1);
 	BUG_ON(!trans);
 	btrfs_set_trans_block_group(trans, inode);
+	trans->block_rsv = &root->fs_info->delalloc_block_rsv;
 
 	actual_end = min_t(u64, isize, end + 1);
 
@@ -753,7 +787,6 @@
 				     EXTENT_CLEAR_UNLOCK_PAGE |
 				     EXTENT_CLEAR_UNLOCK |
 				     EXTENT_CLEAR_DELALLOC |
-				     EXTENT_CLEAR_ACCOUNTING |
 				     EXTENT_CLEAR_DIRTY |
 				     EXTENT_SET_WRITEBACK |
 				     EXTENT_END_WRITEBACK);
@@ -769,29 +802,7 @@
 	BUG_ON(disk_num_bytes >
 	       btrfs_super_total_bytes(&root->fs_info->super_copy));
 
-
-	read_lock(&BTRFS_I(inode)->extent_tree.lock);
-	em = search_extent_mapping(&BTRFS_I(inode)->extent_tree,
-				   start, num_bytes);
-	if (em) {
-		/*
-		 * if block start isn't an actual block number then find the
-		 * first block in this inode and use that as a hint.  If that
-		 * block is also bogus then just don't worry about it.
-		 */
-		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
-			free_extent_map(em);
-			em = search_extent_mapping(em_tree, 0, 0);
-			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)
-				alloc_hint = em->block_start;
-			if (em)
-				free_extent_map(em);
-		} else {
-			alloc_hint = em->block_start;
-			free_extent_map(em);
-		}
-	}
-	read_unlock(&BTRFS_I(inode)->extent_tree.lock);
+	alloc_hint = get_extent_allocation_hint(inode, start, num_bytes);
 	btrfs_drop_extent_cache(inode, start, start + num_bytes - 1, 0);
 
 	while (disk_num_bytes > 0) {
@@ -1174,6 +1185,13 @@
 					       num_bytes, num_bytes, type);
 		BUG_ON(ret);
 
+		if (root->root_key.objectid ==
+		    BTRFS_DATA_RELOC_TREE_OBJECTID) {
+			ret = btrfs_reloc_clone_csums(inode, cur_offset,
+						      num_bytes);
+			BUG_ON(ret);
+		}
+
 		extent_clear_unlock_delalloc(inode, &BTRFS_I(inode)->io_tree,
 				cur_offset, cur_offset + num_bytes - 1,
 				locked_page, EXTENT_CLEAR_UNLOCK_PAGE |
@@ -1226,15 +1244,13 @@
 }
 
 static int btrfs_split_extent_hook(struct inode *inode,
-				    struct extent_state *orig, u64 split)
+				   struct extent_state *orig, u64 split)
 {
+	/* not delalloc, ignore it */
 	if (!(orig->state & EXTENT_DELALLOC))
 		return 0;
 
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
-	BTRFS_I(inode)->outstanding_extents++;
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
-
+	atomic_inc(&BTRFS_I(inode)->outstanding_extents);
 	return 0;
 }
 
@@ -1252,10 +1268,7 @@
 	if (!(other->state & EXTENT_DELALLOC))
 		return 0;
 
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
-	BTRFS_I(inode)->outstanding_extents--;
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
-
+	atomic_dec(&BTRFS_I(inode)->outstanding_extents);
 	return 0;
 }
 
@@ -1264,8 +1277,8 @@
  * bytes in this file, and to maintain the list of inodes that
  * have pending delalloc work to be done.
  */
-static int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end,
-		       unsigned long old, unsigned long bits)
+static int btrfs_set_bit_hook(struct inode *inode,
+			      struct extent_state *state, int *bits)
 {
 
 	/*
@@ -1273,17 +1286,18 @@
 	 * but in this case, we are only testeing for the DELALLOC
 	 * bit, which is only set or cleared with irqs on
 	 */
-	if (!(old & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
+	if (!(state->state & EXTENT_DELALLOC) && (*bits & EXTENT_DELALLOC)) {
 		struct btrfs_root *root = BTRFS_I(inode)->root;
+		u64 len = state->end + 1 - state->start;
 
-		spin_lock(&BTRFS_I(inode)->accounting_lock);
-		BTRFS_I(inode)->outstanding_extents++;
-		spin_unlock(&BTRFS_I(inode)->accounting_lock);
-		btrfs_delalloc_reserve_space(root, inode, end - start + 1);
+		if (*bits & EXTENT_FIRST_DELALLOC)
+			*bits &= ~EXTENT_FIRST_DELALLOC;
+		else
+			atomic_inc(&BTRFS_I(inode)->outstanding_extents);
 
 		spin_lock(&root->fs_info->delalloc_lock);
-		BTRFS_I(inode)->delalloc_bytes += end - start + 1;
-		root->fs_info->delalloc_bytes += end - start + 1;
+		BTRFS_I(inode)->delalloc_bytes += len;
+		root->fs_info->delalloc_bytes += len;
 		if (list_empty(&BTRFS_I(inode)->delalloc_inodes)) {
 			list_add_tail(&BTRFS_I(inode)->delalloc_inodes,
 				      &root->fs_info->delalloc_inodes);
@@ -1297,45 +1311,32 @@
  * extent_io.c clear_bit_hook, see set_bit_hook for why
  */
 static int btrfs_clear_bit_hook(struct inode *inode,
-				struct extent_state *state, unsigned long bits)
+				struct extent_state *state, int *bits)
 {
 	/*
 	 * set_bit and clear bit hooks normally require _irqsave/restore
 	 * but in this case, we are only testeing for the DELALLOC
 	 * bit, which is only set or cleared with irqs on
 	 */
-	if ((state->state & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
+	if ((state->state & EXTENT_DELALLOC) && (*bits & EXTENT_DELALLOC)) {
 		struct btrfs_root *root = BTRFS_I(inode)->root;
+		u64 len = state->end + 1 - state->start;
 
-		if (bits & EXTENT_DO_ACCOUNTING) {
-			spin_lock(&BTRFS_I(inode)->accounting_lock);
-			WARN_ON(!BTRFS_I(inode)->outstanding_extents);
-			BTRFS_I(inode)->outstanding_extents--;
-			spin_unlock(&BTRFS_I(inode)->accounting_lock);
-			btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
-		}
+		if (*bits & EXTENT_FIRST_DELALLOC)
+			*bits &= ~EXTENT_FIRST_DELALLOC;
+		else if (!(*bits & EXTENT_DO_ACCOUNTING))
+			atomic_dec(&BTRFS_I(inode)->outstanding_extents);
+
+		if (*bits & EXTENT_DO_ACCOUNTING)
+			btrfs_delalloc_release_metadata(inode, len);
+
+		if (root->root_key.objectid != BTRFS_DATA_RELOC_TREE_OBJECTID)
+			btrfs_free_reserved_data_space(inode, len);
 
 		spin_lock(&root->fs_info->delalloc_lock);
-		if (state->end - state->start + 1 >
-		    root->fs_info->delalloc_bytes) {
-			printk(KERN_INFO "btrfs warning: delalloc account "
-			       "%llu %llu\n",
-			       (unsigned long long)
-			       state->end - state->start + 1,
-			       (unsigned long long)
-			       root->fs_info->delalloc_bytes);
-			btrfs_delalloc_free_space(root, inode, (u64)-1);
-			root->fs_info->delalloc_bytes = 0;
-			BTRFS_I(inode)->delalloc_bytes = 0;
-		} else {
-			btrfs_delalloc_free_space(root, inode,
-						  state->end -
-						  state->start + 1);
-			root->fs_info->delalloc_bytes -= state->end -
-				state->start + 1;
-			BTRFS_I(inode)->delalloc_bytes -= state->end -
-				state->start + 1;
-		}
+		root->fs_info->delalloc_bytes -= len;
+		BTRFS_I(inode)->delalloc_bytes -= len;
+
 		if (BTRFS_I(inode)->delalloc_bytes == 0 &&
 		    !list_empty(&BTRFS_I(inode)->delalloc_inodes)) {
 			list_del_init(&BTRFS_I(inode)->delalloc_inodes);
@@ -1384,7 +1385,8 @@
  */
 static int __btrfs_submit_bio_start(struct inode *inode, int rw,
 				    struct bio *bio, int mirror_num,
-				    unsigned long bio_flags)
+				    unsigned long bio_flags,
+				    u64 bio_offset)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	int ret = 0;
@@ -1403,7 +1405,8 @@
  * are inserted into the btree
  */
 static int __btrfs_submit_bio_done(struct inode *inode, int rw, struct bio *bio,
-			  int mirror_num, unsigned long bio_flags)
+			  int mirror_num, unsigned long bio_flags,
+			  u64 bio_offset)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	return btrfs_map_bio(root, rw, bio, mirror_num, 1);
@@ -1414,7 +1417,8 @@
  * on write, or reading the csums from the tree before a read
  */
 static int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
-			  int mirror_num, unsigned long bio_flags)
+			  int mirror_num, unsigned long bio_flags,
+			  u64 bio_offset)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	int ret = 0;
@@ -1439,7 +1443,8 @@
 		/* we're doing a write, do the async checksumming */
 		return btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
 				   inode, rw, bio, mirror_num,
-				   bio_flags, __btrfs_submit_bio_start,
+				   bio_flags, bio_offset,
+				   __btrfs_submit_bio_start,
 				   __btrfs_submit_bio_done);
 	}
 
@@ -1520,6 +1525,7 @@
 		goto again;
 	}
 
+	BUG();
 	btrfs_set_extent_delalloc(inode, page_start, page_end, &cached_state);
 	ClearPageChecked(page);
 out:
@@ -1650,7 +1656,7 @@
 static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
-	struct btrfs_trans_handle *trans;
+	struct btrfs_trans_handle *trans = NULL;
 	struct btrfs_ordered_extent *ordered_extent = NULL;
 	struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
 	struct extent_state *cached_state = NULL;
@@ -1668,9 +1674,10 @@
 		ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent);
 		if (!ret) {
 			trans = btrfs_join_transaction(root, 1);
+			btrfs_set_trans_block_group(trans, inode);
+			trans->block_rsv = &root->fs_info->delalloc_block_rsv;
 			ret = btrfs_update_inode(trans, root, inode);
 			BUG_ON(ret);
-			btrfs_end_transaction(trans, root);
 		}
 		goto out;
 	}
@@ -1680,6 +1687,8 @@
 			 0, &cached_state, GFP_NOFS);
 
 	trans = btrfs_join_transaction(root, 1);
+	btrfs_set_trans_block_group(trans, inode);
+	trans->block_rsv = &root->fs_info->delalloc_block_rsv;
 
 	if (test_bit(BTRFS_ORDERED_COMPRESSED, &ordered_extent->flags))
 		compressed = 1;
@@ -1711,12 +1720,13 @@
 	add_pending_csums(trans, inode, ordered_extent->file_offset,
 			  &ordered_extent->list);
 
-	/* this also removes the ordered extent from the tree */
 	btrfs_ordered_update_i_size(inode, 0, ordered_extent);
 	ret = btrfs_update_inode(trans, root, inode);
 	BUG_ON(ret);
-	btrfs_end_transaction(trans, root);
 out:
+	btrfs_delalloc_release_metadata(inode, ordered_extent->len);
+	if (trans)
+		btrfs_end_transaction(trans, root);
 	/* once for us */
 	btrfs_put_ordered_extent(ordered_extent);
 	/* once for the tree */
@@ -1838,7 +1848,7 @@
 
 	BTRFS_I(inode)->io_tree.ops->submit_bio_hook(inode, rw, bio,
 						      failrec->last_mirror,
-						      failrec->bio_flags);
+						      failrec->bio_flags, 0);
 	return 0;
 }
 
@@ -1993,32 +2003,196 @@
 }
 
 /*
+ * calculate extra metadata reservation when snapshotting a subvolume
+ * contains orphan files.
+ */
+void btrfs_orphan_pre_snapshot(struct btrfs_trans_handle *trans,
+				struct btrfs_pending_snapshot *pending,
+				u64 *bytes_to_reserve)
+{
+	struct btrfs_root *root;
+	struct btrfs_block_rsv *block_rsv;
+	u64 num_bytes;
+	int index;
+
+	root = pending->root;
+	if (!root->orphan_block_rsv || list_empty(&root->orphan_list))
+		return;
+
+	block_rsv = root->orphan_block_rsv;
+
+	/* orphan block reservation for the snapshot */
+	num_bytes = block_rsv->size;
+
+	/*
+	 * after the snapshot is created, COWing tree blocks may use more
+	 * space than it frees. So we should make sure there is enough
+	 * reserved space.
+	 */
+	index = trans->transid & 0x1;
+	if (block_rsv->reserved + block_rsv->freed[index] < block_rsv->size) {
+		num_bytes += block_rsv->size -
+			     (block_rsv->reserved + block_rsv->freed[index]);
+	}
+
+	*bytes_to_reserve += num_bytes;
+}
+
+void btrfs_orphan_post_snapshot(struct btrfs_trans_handle *trans,
+				struct btrfs_pending_snapshot *pending)
+{
+	struct btrfs_root *root = pending->root;
+	struct btrfs_root *snap = pending->snap;
+	struct btrfs_block_rsv *block_rsv;
+	u64 num_bytes;
+	int index;
+	int ret;
+
+	if (!root->orphan_block_rsv || list_empty(&root->orphan_list))
+		return;
+
+	/* refill source subvolume's orphan block reservation */
+	block_rsv = root->orphan_block_rsv;
+	index = trans->transid & 0x1;
+	if (block_rsv->reserved + block_rsv->freed[index] < block_rsv->size) {
+		num_bytes = block_rsv->size -
+			    (block_rsv->reserved + block_rsv->freed[index]);
+		ret = btrfs_block_rsv_migrate(&pending->block_rsv,
+					      root->orphan_block_rsv,
+					      num_bytes);
+		BUG_ON(ret);
+	}
+
+	/* setup orphan block reservation for the snapshot */
+	block_rsv = btrfs_alloc_block_rsv(snap);
+	BUG_ON(!block_rsv);
+
+	btrfs_add_durable_block_rsv(root->fs_info, block_rsv);
+	snap->orphan_block_rsv = block_rsv;
+
+	num_bytes = root->orphan_block_rsv->size;
+	ret = btrfs_block_rsv_migrate(&pending->block_rsv,
+				      block_rsv, num_bytes);
+	BUG_ON(ret);
+
+#if 0
+	/* insert orphan item for the snapshot */
+	WARN_ON(!root->orphan_item_inserted);
+	ret = btrfs_insert_orphan_item(trans, root->fs_info->tree_root,
+				       snap->root_key.objectid);
+	BUG_ON(ret);
+	snap->orphan_item_inserted = 1;
+#endif
+}
+
+enum btrfs_orphan_cleanup_state {
+	ORPHAN_CLEANUP_STARTED	= 1,
+	ORPHAN_CLEANUP_DONE	= 2,
+};
+
+/*
+ * This is called in transaction commmit time. If there are no orphan
+ * files in the subvolume, it removes orphan item and frees block_rsv
+ * structure.
+ */
+void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
+			      struct btrfs_root *root)
+{
+	int ret;
+
+	if (!list_empty(&root->orphan_list) ||
+	    root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE)
+		return;
+
+	if (root->orphan_item_inserted &&
+	    btrfs_root_refs(&root->root_item) > 0) {
+		ret = btrfs_del_orphan_item(trans, root->fs_info->tree_root,
+					    root->root_key.objectid);
+		BUG_ON(ret);
+		root->orphan_item_inserted = 0;
+	}
+
+	if (root->orphan_block_rsv) {
+		WARN_ON(root->orphan_block_rsv->size > 0);
+		btrfs_free_block_rsv(root, root->orphan_block_rsv);
+		root->orphan_block_rsv = NULL;
+	}
+}
+
+/*
  * This creates an orphan entry for the given inode in case something goes
  * wrong in the middle of an unlink/truncate.
+ *
+ * NOTE: caller of this function should reserve 5 units of metadata for
+ *	 this function.
  */
 int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
-	int ret = 0;
+	struct btrfs_block_rsv *block_rsv = NULL;
+	int reserve = 0;
+	int insert = 0;
+	int ret;
 
-	spin_lock(&root->list_lock);
-
-	/* already on the orphan list, we're good */
-	if (!list_empty(&BTRFS_I(inode)->i_orphan)) {
-		spin_unlock(&root->list_lock);
-		return 0;
+	if (!root->orphan_block_rsv) {
+		block_rsv = btrfs_alloc_block_rsv(root);
+		BUG_ON(!block_rsv);
 	}
 
-	list_add(&BTRFS_I(inode)->i_orphan, &root->orphan_list);
+	spin_lock(&root->orphan_lock);
+	if (!root->orphan_block_rsv) {
+		root->orphan_block_rsv = block_rsv;
+	} else if (block_rsv) {
+		btrfs_free_block_rsv(root, block_rsv);
+		block_rsv = NULL;
+	}
 
-	spin_unlock(&root->list_lock);
+	if (list_empty(&BTRFS_I(inode)->i_orphan)) {
+		list_add(&BTRFS_I(inode)->i_orphan, &root->orphan_list);
+#if 0
+		/*
+		 * For proper ENOSPC handling, we should do orphan
+		 * cleanup when mounting. But this introduces backward
+		 * compatibility issue.
+		 */
+		if (!xchg(&root->orphan_item_inserted, 1))
+			insert = 2;
+		else
+			insert = 1;
+#endif
+		insert = 1;
+	} else {
+		WARN_ON(!BTRFS_I(inode)->orphan_meta_reserved);
+	}
 
-	/*
-	 * insert an orphan item to track this unlinked/truncated file
-	 */
-	ret = btrfs_insert_orphan_item(trans, root, inode->i_ino);
+	if (!BTRFS_I(inode)->orphan_meta_reserved) {
+		BTRFS_I(inode)->orphan_meta_reserved = 1;
+		reserve = 1;
+	}
+	spin_unlock(&root->orphan_lock);
 
-	return ret;
+	if (block_rsv)
+		btrfs_add_durable_block_rsv(root->fs_info, block_rsv);
+
+	/* grab metadata reservation from transaction handle */
+	if (reserve) {
+		ret = btrfs_orphan_reserve_metadata(trans, inode);
+		BUG_ON(ret);
+	}
+
+	/* insert an orphan item to track this unlinked/truncated file */
+	if (insert >= 1) {
+		ret = btrfs_insert_orphan_item(trans, root, inode->i_ino);
+		BUG_ON(ret);
+	}
+
+	/* insert an orphan item to track subvolume contains orphan files */
+	if (insert >= 2) {
+		ret = btrfs_insert_orphan_item(trans, root->fs_info->tree_root,
+					       root->root_key.objectid);
+		BUG_ON(ret);
+	}
+	return 0;
 }
 
 /*
@@ -2028,26 +2202,31 @@
 int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
+	int delete_item = 0;
+	int release_rsv = 0;
 	int ret = 0;
 
-	spin_lock(&root->list_lock);
-
-	if (list_empty(&BTRFS_I(inode)->i_orphan)) {
-		spin_unlock(&root->list_lock);
-		return 0;
+	spin_lock(&root->orphan_lock);
+	if (!list_empty(&BTRFS_I(inode)->i_orphan)) {
+		list_del_init(&BTRFS_I(inode)->i_orphan);
+		delete_item = 1;
 	}
 
-	list_del_init(&BTRFS_I(inode)->i_orphan);
-	if (!trans) {
-		spin_unlock(&root->list_lock);
-		return 0;
+	if (BTRFS_I(inode)->orphan_meta_reserved) {
+		BTRFS_I(inode)->orphan_meta_reserved = 0;
+		release_rsv = 1;
+	}
+	spin_unlock(&root->orphan_lock);
+
+	if (trans && delete_item) {
+		ret = btrfs_del_orphan_item(trans, root, inode->i_ino);
+		BUG_ON(ret);
 	}
 
-	spin_unlock(&root->list_lock);
+	if (release_rsv)
+		btrfs_orphan_release_metadata(inode);
 
-	ret = btrfs_del_orphan_item(trans, root, inode->i_ino);
-
-	return ret;
+	return 0;
 }
 
 /*
@@ -2064,7 +2243,7 @@
 	struct inode *inode;
 	int ret = 0, nr_unlink = 0, nr_truncate = 0;
 
-	if (!xchg(&root->clean_orphans, 0))
+	if (cmpxchg(&root->orphan_cleanup_state, 0, ORPHAN_CLEANUP_STARTED))
 		return;
 
 	path = btrfs_alloc_path();
@@ -2117,16 +2296,15 @@
 		found_key.type = BTRFS_INODE_ITEM_KEY;
 		found_key.offset = 0;
 		inode = btrfs_iget(root->fs_info->sb, &found_key, root, NULL);
-		if (IS_ERR(inode))
-			break;
+		BUG_ON(IS_ERR(inode));
 
 		/*
 		 * add this inode to the orphan list so btrfs_orphan_del does
 		 * the proper thing when we hit it
 		 */
-		spin_lock(&root->list_lock);
+		spin_lock(&root->orphan_lock);
 		list_add(&BTRFS_I(inode)->i_orphan, &root->orphan_list);
-		spin_unlock(&root->list_lock);
+		spin_unlock(&root->orphan_lock);
 
 		/*
 		 * if this is a bad inode, means we actually succeeded in
@@ -2135,7 +2313,7 @@
 		 * do a destroy_inode
 		 */
 		if (is_bad_inode(inode)) {
-			trans = btrfs_start_transaction(root, 1);
+			trans = btrfs_start_transaction(root, 0);
 			btrfs_orphan_del(trans, inode);
 			btrfs_end_transaction(trans, root);
 			iput(inode);
@@ -2153,13 +2331,23 @@
 		/* this will do delete_inode and everything for us */
 		iput(inode);
 	}
+	btrfs_free_path(path);
+
+	root->orphan_cleanup_state = ORPHAN_CLEANUP_DONE;
+
+	if (root->orphan_block_rsv)
+		btrfs_block_rsv_release(root, root->orphan_block_rsv,
+					(u64)-1);
+
+	if (root->orphan_block_rsv || root->orphan_item_inserted) {
+		trans = btrfs_join_transaction(root, 1);
+		btrfs_end_transaction(trans, root);
+	}
 
 	if (nr_unlink)
 		printk(KERN_INFO "btrfs: unlinked %d orphans\n", nr_unlink);
 	if (nr_truncate)
 		printk(KERN_INFO "btrfs: truncated %d orphans\n", nr_truncate);
-
-	btrfs_free_path(path);
 }
 
 /*
@@ -2478,29 +2666,201 @@
 	return ret;
 }
 
+/* helper to check if there is any shared block in the path */
+static int check_path_shared(struct btrfs_root *root,
+			     struct btrfs_path *path)
+{
+	struct extent_buffer *eb;
+	int level;
+	int ret;
+	u64 refs;
+
+	for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
+		if (!path->nodes[level])
+			break;
+		eb = path->nodes[level];
+		if (!btrfs_block_can_be_shared(root, eb))
+			continue;
+		ret = btrfs_lookup_extent_info(NULL, root, eb->start, eb->len,
+					       &refs, NULL);
+		if (refs > 1)
+			return 1;
+	}
+	return 0;
+}
+
+/*
+ * helper to start transaction for unlink and rmdir.
+ *
+ * unlink and rmdir are special in btrfs, they do not always free space.
+ * so in enospc case, we should make sure they will free space before
+ * allowing them to use the global metadata reservation.
+ */
+static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir,
+						       struct dentry *dentry)
+{
+	struct btrfs_trans_handle *trans;
+	struct btrfs_root *root = BTRFS_I(dir)->root;
+	struct btrfs_path *path;
+	struct btrfs_inode_ref *ref;
+	struct btrfs_dir_item *di;
+	struct inode *inode = dentry->d_inode;
+	u64 index;
+	int check_link = 1;
+	int err = -ENOSPC;
+	int ret;
+
+	trans = btrfs_start_transaction(root, 10);
+	if (!IS_ERR(trans) || PTR_ERR(trans) != -ENOSPC)
+		return trans;
+
+	if (inode->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)
+		return ERR_PTR(-ENOSPC);
+
+	/* check if there is someone else holds reference */
+	if (S_ISDIR(inode->i_mode) && atomic_read(&inode->i_count) > 1)
+		return ERR_PTR(-ENOSPC);
+
+	if (atomic_read(&inode->i_count) > 2)
+		return ERR_PTR(-ENOSPC);
+
+	if (xchg(&root->fs_info->enospc_unlink, 1))
+		return ERR_PTR(-ENOSPC);
+
+	path = btrfs_alloc_path();
+	if (!path) {
+		root->fs_info->enospc_unlink = 0;
+		return ERR_PTR(-ENOMEM);
+	}
+
+	trans = btrfs_start_transaction(root, 0);
+	if (IS_ERR(trans)) {
+		btrfs_free_path(path);
+		root->fs_info->enospc_unlink = 0;
+		return trans;
+	}
+
+	path->skip_locking = 1;
+	path->search_commit_root = 1;
+
+	ret = btrfs_lookup_inode(trans, root, path,
+				&BTRFS_I(dir)->location, 0);
+	if (ret < 0) {
+		err = ret;
+		goto out;
+	}
+	if (ret == 0) {
+		if (check_path_shared(root, path))
+			goto out;
+	} else {
+		check_link = 0;
+	}
+	btrfs_release_path(root, path);
+
+	ret = btrfs_lookup_inode(trans, root, path,
+				&BTRFS_I(inode)->location, 0);
+	if (ret < 0) {
+		err = ret;
+		goto out;
+	}
+	if (ret == 0) {
+		if (check_path_shared(root, path))
+			goto out;
+	} else {
+		check_link = 0;
+	}
+	btrfs_release_path(root, path);
+
+	if (ret == 0 && S_ISREG(inode->i_mode)) {
+		ret = btrfs_lookup_file_extent(trans, root, path,
+					       inode->i_ino, (u64)-1, 0);
+		if (ret < 0) {
+			err = ret;
+			goto out;
+		}
+		BUG_ON(ret == 0);
+		if (check_path_shared(root, path))
+			goto out;
+		btrfs_release_path(root, path);
+	}
+
+	if (!check_link) {
+		err = 0;
+		goto out;
+	}
+
+	di = btrfs_lookup_dir_item(trans, root, path, dir->i_ino,
+				dentry->d_name.name, dentry->d_name.len, 0);
+	if (IS_ERR(di)) {
+		err = PTR_ERR(di);
+		goto out;
+	}
+	if (di) {
+		if (check_path_shared(root, path))
+			goto out;
+	} else {
+		err = 0;
+		goto out;
+	}
+	btrfs_release_path(root, path);
+
+	ref = btrfs_lookup_inode_ref(trans, root, path,
+				dentry->d_name.name, dentry->d_name.len,
+				inode->i_ino, dir->i_ino, 0);
+	if (IS_ERR(ref)) {
+		err = PTR_ERR(ref);
+		goto out;
+	}
+	BUG_ON(!ref);
+	if (check_path_shared(root, path))
+		goto out;
+	index = btrfs_inode_ref_index(path->nodes[0], ref);
+	btrfs_release_path(root, path);
+
+	di = btrfs_lookup_dir_index_item(trans, root, path, dir->i_ino, index,
+				dentry->d_name.name, dentry->d_name.len, 0);
+	if (IS_ERR(di)) {
+		err = PTR_ERR(di);
+		goto out;
+	}
+	BUG_ON(ret == -ENOENT);
+	if (check_path_shared(root, path))
+		goto out;
+
+	err = 0;
+out:
+	btrfs_free_path(path);
+	if (err) {
+		btrfs_end_transaction(trans, root);
+		root->fs_info->enospc_unlink = 0;
+		return ERR_PTR(err);
+	}
+
+	trans->block_rsv = &root->fs_info->global_block_rsv;
+	return trans;
+}
+
+static void __unlink_end_trans(struct btrfs_trans_handle *trans,
+			       struct btrfs_root *root)
+{
+	if (trans->block_rsv == &root->fs_info->global_block_rsv) {
+		BUG_ON(!root->fs_info->enospc_unlink);
+		root->fs_info->enospc_unlink = 0;
+	}
+	btrfs_end_transaction_throttle(trans, root);
+}
+
 static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
 {
-	struct btrfs_root *root;
+	struct btrfs_root *root = BTRFS_I(dir)->root;
 	struct btrfs_trans_handle *trans;
 	struct inode *inode = dentry->d_inode;
 	int ret;
 	unsigned long nr = 0;
 
-	root = BTRFS_I(dir)->root;
-
-	/*
-	 * 5 items for unlink inode
-	 * 1 for orphan
-	 */
-	ret = btrfs_reserve_metadata_space(root, 6);
-	if (ret)
-		return ret;
-
-	trans = btrfs_start_transaction(root, 1);
-	if (IS_ERR(trans)) {
-		btrfs_unreserve_metadata_space(root, 6);
+	trans = __unlink_start_trans(dir, dentry);
+	if (IS_ERR(trans))
 		return PTR_ERR(trans);
-	}
 
 	btrfs_set_trans_block_group(trans, dir);
 
@@ -2508,14 +2868,15 @@
 
 	ret = btrfs_unlink_inode(trans, root, dir, dentry->d_inode,
 				 dentry->d_name.name, dentry->d_name.len);
+	BUG_ON(ret);
 
-	if (inode->i_nlink == 0)
+	if (inode->i_nlink == 0) {
 		ret = btrfs_orphan_add(trans, inode);
+		BUG_ON(ret);
+	}
 
 	nr = trans->blocks_used;
-
-	btrfs_end_transaction_throttle(trans, root);
-	btrfs_unreserve_metadata_space(root, 6);
+	__unlink_end_trans(trans, root);
 	btrfs_btree_balance_dirty(root, nr);
 	return ret;
 }
@@ -2587,7 +2948,6 @@
 {
 	struct inode *inode = dentry->d_inode;
 	int err = 0;
-	int ret;
 	struct btrfs_root *root = BTRFS_I(dir)->root;
 	struct btrfs_trans_handle *trans;
 	unsigned long nr = 0;
@@ -2596,15 +2956,9 @@
 	    inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
 		return -ENOTEMPTY;
 
-	ret = btrfs_reserve_metadata_space(root, 5);
-	if (ret)
-		return ret;
-
-	trans = btrfs_start_transaction(root, 1);
-	if (IS_ERR(trans)) {
-		btrfs_unreserve_metadata_space(root, 5);
+	trans = __unlink_start_trans(dir, dentry);
+	if (IS_ERR(trans))
 		return PTR_ERR(trans);
-	}
 
 	btrfs_set_trans_block_group(trans, dir);
 
@@ -2627,12 +2981,9 @@
 		btrfs_i_size_write(inode, 0);
 out:
 	nr = trans->blocks_used;
-	ret = btrfs_end_transaction_throttle(trans, root);
-	btrfs_unreserve_metadata_space(root, 5);
+	__unlink_end_trans(trans, root);
 	btrfs_btree_balance_dirty(root, nr);
 
-	if (ret && !err)
-		err = ret;
 	return err;
 }
 
@@ -3029,6 +3380,7 @@
 	if (pending_del_nr) {
 		ret = btrfs_del_items(trans, root, path, pending_del_slot,
 				      pending_del_nr);
+		BUG_ON(ret);
 	}
 	btrfs_free_path(path);
 	return err;
@@ -3056,11 +3408,7 @@
 
 	if ((offset & (blocksize - 1)) == 0)
 		goto out;
-	ret = btrfs_check_data_free_space(root, inode, PAGE_CACHE_SIZE);
-	if (ret)
-		goto out;
-
-	ret = btrfs_reserve_metadata_for_delalloc(root, inode, 1);
+	ret = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE);
 	if (ret)
 		goto out;
 
@@ -3068,8 +3416,7 @@
 again:
 	page = grab_cache_page(mapping, index);
 	if (!page) {
-		btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
-		btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
+		btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
 		goto out;
 	}
 
@@ -3132,8 +3479,7 @@
 
 out_unlock:
 	if (ret)
-		btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
-	btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
+		btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
 	unlock_page(page);
 	page_cache_release(page);
 out:
@@ -3145,7 +3491,7 @@
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
-	struct extent_map *em;
+	struct extent_map *em = NULL;
 	struct extent_state *cached_state = NULL;
 	u64 mask = root->sectorsize - 1;
 	u64 hole_start = (inode->i_size + mask) & ~mask;
@@ -3183,11 +3529,11 @@
 			u64 hint_byte = 0;
 			hole_size = last_byte - cur_offset;
 
-			err = btrfs_reserve_metadata_space(root, 2);
-			if (err)
+			trans = btrfs_start_transaction(root, 2);
+			if (IS_ERR(trans)) {
+				err = PTR_ERR(trans);
 				break;
-
-			trans = btrfs_start_transaction(root, 1);
+			}
 			btrfs_set_trans_block_group(trans, inode);
 
 			err = btrfs_drop_extents(trans, inode, cur_offset,
@@ -3205,14 +3551,15 @@
 					last_byte - 1, 0);
 
 			btrfs_end_transaction(trans, root);
-			btrfs_unreserve_metadata_space(root, 2);
 		}
 		free_extent_map(em);
+		em = NULL;
 		cur_offset = last_byte;
 		if (cur_offset >= block_end)
 			break;
 	}
 
+	free_extent_map(em);
 	unlock_extent_cached(io_tree, hole_start, block_end - 1, &cached_state,
 			     GFP_NOFS);
 	return err;
@@ -3239,11 +3586,10 @@
 		}
 	}
 
-	ret = btrfs_reserve_metadata_space(root, 1);
-	if (ret)
-		return ret;
+	trans = btrfs_start_transaction(root, 5);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	trans = btrfs_start_transaction(root, 1);
 	btrfs_set_trans_block_group(trans, inode);
 
 	ret = btrfs_orphan_add(trans, inode);
@@ -3251,7 +3597,6 @@
 
 	nr = trans->blocks_used;
 	btrfs_end_transaction(trans, root);
-	btrfs_unreserve_metadata_space(root, 1);
 	btrfs_btree_balance_dirty(root, nr);
 
 	if (attr->ia_size > inode->i_size) {
@@ -3264,8 +3609,11 @@
 		i_size_write(inode, attr->ia_size);
 		btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
 
-		trans = btrfs_start_transaction(root, 1);
+		trans = btrfs_start_transaction(root, 0);
+		BUG_ON(IS_ERR(trans));
 		btrfs_set_trans_block_group(trans, inode);
+		trans->block_rsv = root->orphan_block_rsv;
+		BUG_ON(!trans->block_rsv);
 
 		ret = btrfs_update_inode(trans, root, inode);
 		BUG_ON(ret);
@@ -3345,10 +3693,21 @@
 	btrfs_i_size_write(inode, 0);
 
 	while (1) {
-		trans = btrfs_start_transaction(root, 1);
+		trans = btrfs_start_transaction(root, 0);
+		BUG_ON(IS_ERR(trans));
 		btrfs_set_trans_block_group(trans, inode);
-		ret = btrfs_truncate_inode_items(trans, root, inode, 0, 0);
+		trans->block_rsv = root->orphan_block_rsv;
 
+		ret = btrfs_block_rsv_check(trans, root,
+					    root->orphan_block_rsv, 0, 5);
+		if (ret) {
+			BUG_ON(ret != -EAGAIN);
+			ret = btrfs_commit_transaction(trans, root);
+			BUG_ON(ret);
+			continue;
+		}
+
+		ret = btrfs_truncate_inode_items(trans, root, inode, 0, 0);
 		if (ret != -EAGAIN)
 			break;
 
@@ -3356,6 +3715,7 @@
 		btrfs_end_transaction(trans, root);
 		trans = NULL;
 		btrfs_btree_balance_dirty(root, nr);
+
 	}
 
 	if (ret == 0) {
@@ -3596,40 +3956,10 @@
 	return 0;
 }
 
-static noinline void init_btrfs_i(struct inode *inode)
-{
-	struct btrfs_inode *bi = BTRFS_I(inode);
-
-	bi->generation = 0;
-	bi->sequence = 0;
-	bi->last_trans = 0;
-	bi->last_sub_trans = 0;
-	bi->logged_trans = 0;
-	bi->delalloc_bytes = 0;
-	bi->reserved_bytes = 0;
-	bi->disk_i_size = 0;
-	bi->flags = 0;
-	bi->index_cnt = (u64)-1;
-	bi->last_unlink_trans = 0;
-	bi->ordered_data_close = 0;
-	bi->force_compress = 0;
-	extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
-	extent_io_tree_init(&BTRFS_I(inode)->io_tree,
-			     inode->i_mapping, GFP_NOFS);
-	extent_io_tree_init(&BTRFS_I(inode)->io_failure_tree,
-			     inode->i_mapping, GFP_NOFS);
-	INIT_LIST_HEAD(&BTRFS_I(inode)->delalloc_inodes);
-	INIT_LIST_HEAD(&BTRFS_I(inode)->ordered_operations);
-	RB_CLEAR_NODE(&BTRFS_I(inode)->rb_node);
-	btrfs_ordered_inode_tree_init(&BTRFS_I(inode)->ordered_tree);
-	mutex_init(&BTRFS_I(inode)->log_mutex);
-}
-
 static int btrfs_init_locked_inode(struct inode *inode, void *p)
 {
 	struct btrfs_iget_args *args = p;
 	inode->i_ino = args->ino;
-	init_btrfs_i(inode);
 	BTRFS_I(inode)->root = args->root;
 	btrfs_set_inode_space_info(args->root, inode);
 	return 0;
@@ -3692,8 +4022,6 @@
 	if (!inode)
 		return ERR_PTR(-ENOMEM);
 
-	init_btrfs_i(inode);
-
 	BTRFS_I(inode)->root = root;
 	memcpy(&BTRFS_I(inode)->location, key, sizeof(*key));
 	BTRFS_I(inode)->dummy_inode = 1;
@@ -3950,7 +4278,7 @@
 	struct btrfs_trans_handle *trans;
 	int ret = 0;
 
-	if (root->fs_info->btree_inode == inode)
+	if (BTRFS_I(inode)->dummy_inode)
 		return 0;
 
 	if (wbc->sync_mode == WB_SYNC_ALL) {
@@ -3971,10 +4299,38 @@
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct btrfs_trans_handle *trans;
+	int ret;
+
+	if (BTRFS_I(inode)->dummy_inode)
+		return;
 
 	trans = btrfs_join_transaction(root, 1);
 	btrfs_set_trans_block_group(trans, inode);
-	btrfs_update_inode(trans, root, inode);
+
+	ret = btrfs_update_inode(trans, root, inode);
+	if (ret && ret == -ENOSPC) {
+		/* whoops, lets try again with the full transaction */
+		btrfs_end_transaction(trans, root);
+		trans = btrfs_start_transaction(root, 1);
+		if (IS_ERR(trans)) {
+			if (printk_ratelimit()) {
+				printk(KERN_ERR "btrfs: fail to "
+				       "dirty  inode %lu error %ld\n",
+				       inode->i_ino, PTR_ERR(trans));
+			}
+			return;
+		}
+		btrfs_set_trans_block_group(trans, inode);
+
+		ret = btrfs_update_inode(trans, root, inode);
+		if (ret) {
+			if (printk_ratelimit()) {
+				printk(KERN_ERR "btrfs: fail to "
+				       "dirty  inode %lu error %d\n",
+				       inode->i_ino, ret);
+			}
+		}
+	}
 	btrfs_end_transaction(trans, root);
 }
 
@@ -4092,7 +4448,6 @@
 	 * btrfs_get_inode_index_count has an explanation for the magic
 	 * number
 	 */
-	init_btrfs_i(inode);
 	BTRFS_I(inode)->index_cnt = 2;
 	BTRFS_I(inode)->root = root;
 	BTRFS_I(inode)->generation = trans->transid;
@@ -4247,26 +4602,21 @@
 	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
+	err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
+	if (err)
+		return err;
+
 	/*
 	 * 2 for inode item and ref
 	 * 2 for dir items
 	 * 1 for xattr if selinux is on
 	 */
-	err = btrfs_reserve_metadata_space(root, 5);
-	if (err)
-		return err;
+	trans = btrfs_start_transaction(root, 5);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans)
-		goto fail;
 	btrfs_set_trans_block_group(trans, dir);
 
-	err = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
-	if (err) {
-		err = -ENOSPC;
-		goto out_unlock;
-	}
-
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
 				dentry->d_name.len,
 				dentry->d_parent->d_inode->i_ino, objectid,
@@ -4295,13 +4645,11 @@
 out_unlock:
 	nr = trans->blocks_used;
 	btrfs_end_transaction_throttle(trans, root);
-fail:
-	btrfs_unreserve_metadata_space(root, 5);
+	btrfs_btree_balance_dirty(root, nr);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
 		iput(inode);
 	}
-	btrfs_btree_balance_dirty(root, nr);
 	return err;
 }
 
@@ -4311,32 +4659,26 @@
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(dir)->root;
 	struct inode *inode = NULL;
-	int err;
 	int drop_inode = 0;
+	int err;
 	unsigned long nr = 0;
 	u64 objectid;
 	u64 index = 0;
 
+	err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
+	if (err)
+		return err;
 	/*
 	 * 2 for inode item and ref
 	 * 2 for dir items
 	 * 1 for xattr if selinux is on
 	 */
-	err = btrfs_reserve_metadata_space(root, 5);
-	if (err)
-		return err;
+	trans = btrfs_start_transaction(root, 5);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans)
-		goto fail;
 	btrfs_set_trans_block_group(trans, dir);
 
-	err = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
-	if (err) {
-		err = -ENOSPC;
-		goto out_unlock;
-	}
-
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
 				dentry->d_name.len,
 				dentry->d_parent->d_inode->i_ino,
@@ -4368,8 +4710,6 @@
 out_unlock:
 	nr = trans->blocks_used;
 	btrfs_end_transaction_throttle(trans, root);
-fail:
-	btrfs_unreserve_metadata_space(root, 5);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
 		iput(inode);
@@ -4396,21 +4736,21 @@
 	if (root->objectid != BTRFS_I(inode)->root->objectid)
 		return -EPERM;
 
-	/*
-	 * 1 item for inode ref
-	 * 2 items for dir items
-	 */
-	err = btrfs_reserve_metadata_space(root, 3);
-	if (err)
-		return err;
-
 	btrfs_inc_nlink(inode);
 
 	err = btrfs_set_inode_index(dir, &index);
 	if (err)
 		goto fail;
 
-	trans = btrfs_start_transaction(root, 1);
+	/*
+	 * 1 item for inode ref
+	 * 2 items for dir items
+	 */
+	trans = btrfs_start_transaction(root, 3);
+	if (IS_ERR(trans)) {
+		err = PTR_ERR(trans);
+		goto fail;
+	}
 
 	btrfs_set_trans_block_group(trans, dir);
 	atomic_inc(&inode->i_count);
@@ -4429,7 +4769,6 @@
 	nr = trans->blocks_used;
 	btrfs_end_transaction_throttle(trans, root);
 fail:
-	btrfs_unreserve_metadata_space(root, 3);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
 		iput(inode);
@@ -4449,28 +4788,20 @@
 	u64 index = 0;
 	unsigned long nr = 1;
 
+	err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
+	if (err)
+		return err;
+
 	/*
 	 * 2 items for inode and ref
 	 * 2 items for dir items
 	 * 1 for xattr if selinux is on
 	 */
-	err = btrfs_reserve_metadata_space(root, 5);
-	if (err)
-		return err;
-
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans) {
-		err = -ENOMEM;
-		goto out_unlock;
-	}
+	trans = btrfs_start_transaction(root, 5);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 	btrfs_set_trans_block_group(trans, dir);
 
-	err = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
-	if (err) {
-		err = -ENOSPC;
-		goto out_fail;
-	}
-
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
 				dentry->d_name.len,
 				dentry->d_parent->d_inode->i_ino, objectid,
@@ -4510,9 +4841,6 @@
 out_fail:
 	nr = trans->blocks_used;
 	btrfs_end_transaction_throttle(trans, root);
-
-out_unlock:
-	btrfs_unreserve_metadata_space(root, 5);
 	if (drop_on_err)
 		iput(inode);
 	btrfs_btree_balance_dirty(root, nr);
@@ -4770,6 +5098,7 @@
 			}
 			flush_dcache_page(page);
 		} else if (create && PageUptodate(page)) {
+			WARN_ON(1);
 			if (!trans) {
 				kunmap(page);
 				free_extent_map(em);
@@ -4866,11 +5195,651 @@
 	return em;
 }
 
+static struct extent_map *btrfs_new_extent_direct(struct inode *inode,
+						  u64 start, u64 len)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_trans_handle *trans;
+	struct extent_map *em;
+	struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
+	struct btrfs_key ins;
+	u64 alloc_hint;
+	int ret;
+
+	btrfs_drop_extent_cache(inode, start, start + len - 1, 0);
+
+	trans = btrfs_join_transaction(root, 0);
+	if (!trans)
+		return ERR_PTR(-ENOMEM);
+
+	trans->block_rsv = &root->fs_info->delalloc_block_rsv;
+
+	alloc_hint = get_extent_allocation_hint(inode, start, len);
+	ret = btrfs_reserve_extent(trans, root, len, root->sectorsize, 0,
+				   alloc_hint, (u64)-1, &ins, 1);
+	if (ret) {
+		em = ERR_PTR(ret);
+		goto out;
+	}
+
+	em = alloc_extent_map(GFP_NOFS);
+	if (!em) {
+		em = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	em->start = start;
+	em->orig_start = em->start;
+	em->len = ins.offset;
+
+	em->block_start = ins.objectid;
+	em->block_len = ins.offset;
+	em->bdev = root->fs_info->fs_devices->latest_bdev;
+	set_bit(EXTENT_FLAG_PINNED, &em->flags);
+
+	while (1) {
+		write_lock(&em_tree->lock);
+		ret = add_extent_mapping(em_tree, em);
+		write_unlock(&em_tree->lock);
+		if (ret != -EEXIST)
+			break;
+		btrfs_drop_extent_cache(inode, start, start + em->len - 1, 0);
+	}
+
+	ret = btrfs_add_ordered_extent_dio(inode, start, ins.objectid,
+					   ins.offset, ins.offset, 0);
+	if (ret) {
+		btrfs_free_reserved_extent(root, ins.objectid, ins.offset);
+		em = ERR_PTR(ret);
+	}
+out:
+	btrfs_end_transaction(trans, root);
+	return em;
+}
+
+/*
+ * returns 1 when the nocow is safe, < 1 on error, 0 if the
+ * block must be cow'd
+ */
+static noinline int can_nocow_odirect(struct btrfs_trans_handle *trans,
+				      struct inode *inode, u64 offset, u64 len)
+{
+	struct btrfs_path *path;
+	int ret;
+	struct extent_buffer *leaf;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_file_extent_item *fi;
+	struct btrfs_key key;
+	u64 disk_bytenr;
+	u64 backref_offset;
+	u64 extent_end;
+	u64 num_bytes;
+	int slot;
+	int found_type;
+
+	path = btrfs_alloc_path();
+	if (!path)
+		return -ENOMEM;
+
+	ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino,
+				       offset, 0);
+	if (ret < 0)
+		goto out;
+
+	slot = path->slots[0];
+	if (ret == 1) {
+		if (slot == 0) {
+			/* can't find the item, must cow */
+			ret = 0;
+			goto out;
+		}
+		slot--;
+	}
+	ret = 0;
+	leaf = path->nodes[0];
+	btrfs_item_key_to_cpu(leaf, &key, slot);
+	if (key.objectid != inode->i_ino ||
+	    key.type != BTRFS_EXTENT_DATA_KEY) {
+		/* not our file or wrong item type, must cow */
+		goto out;
+	}
+
+	if (key.offset > offset) {
+		/* Wrong offset, must cow */
+		goto out;
+	}
+
+	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
+	found_type = btrfs_file_extent_type(leaf, fi);
+	if (found_type != BTRFS_FILE_EXTENT_REG &&
+	    found_type != BTRFS_FILE_EXTENT_PREALLOC) {
+		/* not a regular extent, must cow */
+		goto out;
+	}
+	disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
+	backref_offset = btrfs_file_extent_offset(leaf, fi);
+
+	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);
+	if (extent_end < offset + len) {
+		/* extent doesn't include our full range, must cow */
+		goto out;
+	}
+
+	if (btrfs_extent_readonly(root, disk_bytenr))
+		goto out;
+
+	/*
+	 * look for other files referencing this extent, if we
+	 * find any we must cow
+	 */
+	if (btrfs_cross_ref_exist(trans, root, inode->i_ino,
+				  key.offset - backref_offset, disk_bytenr))
+		goto out;
+
+	/*
+	 * adjust disk_bytenr and num_bytes to cover just the bytes
+	 * in this extent we are about to write.  If there
+	 * are any csums in that range we have to cow in order
+	 * to keep the csums correct
+	 */
+	disk_bytenr += backref_offset;
+	disk_bytenr += offset - key.offset;
+	num_bytes = min(offset + len, extent_end) - offset;
+	if (csum_exist_in_range(root, disk_bytenr, num_bytes))
+				goto out;
+	/*
+	 * all of the above have passed, it is safe to overwrite this extent
+	 * without cow
+	 */
+	ret = 1;
+out:
+	btrfs_free_path(path);
+	return ret;
+}
+
+static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock,
+				   struct buffer_head *bh_result, int create)
+{
+	struct extent_map *em;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	u64 start = iblock << inode->i_blkbits;
+	u64 len = bh_result->b_size;
+	struct btrfs_trans_handle *trans;
+
+	em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
+	if (IS_ERR(em))
+		return PTR_ERR(em);
+
+	/*
+	 * Ok for INLINE and COMPRESSED extents we need to fallback on buffered
+	 * io.  INLINE is special, and we could probably kludge it in here, but
+	 * it's still buffered so for safety lets just fall back to the generic
+	 * buffered path.
+	 *
+	 * For COMPRESSED we _have_ to read the entire extent in so we can
+	 * decompress it, so there will be buffering required no matter what we
+	 * do, so go ahead and fallback to buffered.
+	 *
+	 * We return -ENOTBLK because thats what makes DIO go ahead and go back
+	 * to buffered IO.  Don't blame me, this is the price we pay for using
+	 * the generic code.
+	 */
+	if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags) ||
+	    em->block_start == EXTENT_MAP_INLINE) {
+		free_extent_map(em);
+		return -ENOTBLK;
+	}
+
+	/* Just a good old fashioned hole, return */
+	if (!create && (em->block_start == EXTENT_MAP_HOLE ||
+			test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
+		free_extent_map(em);
+		/* DIO will do one hole at a time, so just unlock a sector */
+		unlock_extent(&BTRFS_I(inode)->io_tree, start,
+			      start + root->sectorsize - 1, GFP_NOFS);
+		return 0;
+	}
+
+	/*
+	 * We don't allocate a new extent in the following cases
+	 *
+	 * 1) The inode is marked as NODATACOW.  In this case we'll just use the
+	 * existing extent.
+	 * 2) The extent is marked as PREALLOC.  We're good to go here and can
+	 * just use the extent.
+	 *
+	 */
+	if (!create) {
+		len = em->len - (start - em->start);
+		goto map;
+	}
+
+	if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags) ||
+	    ((BTRFS_I(inode)->flags & BTRFS_INODE_NODATACOW) &&
+	     em->block_start != EXTENT_MAP_HOLE)) {
+		int type;
+		int ret;
+		u64 block_start;
+
+		if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags))
+			type = BTRFS_ORDERED_PREALLOC;
+		else
+			type = BTRFS_ORDERED_NOCOW;
+		len = min(len, em->len - (start - em->start));
+		block_start = em->block_start + (start - em->start);
+
+		/*
+		 * we're not going to log anything, but we do need
+		 * to make sure the current transaction stays open
+		 * while we look for nocow cross refs
+		 */
+		trans = btrfs_join_transaction(root, 0);
+		if (!trans)
+			goto must_cow;
+
+		if (can_nocow_odirect(trans, inode, start, len) == 1) {
+			ret = btrfs_add_ordered_extent_dio(inode, start,
+					   block_start, len, len, type);
+			btrfs_end_transaction(trans, root);
+			if (ret) {
+				free_extent_map(em);
+				return ret;
+			}
+			goto unlock;
+		}
+		btrfs_end_transaction(trans, root);
+	}
+must_cow:
+	/*
+	 * this will cow the extent, reset the len in case we changed
+	 * it above
+	 */
+	len = bh_result->b_size;
+	free_extent_map(em);
+	em = btrfs_new_extent_direct(inode, start, len);
+	if (IS_ERR(em))
+		return PTR_ERR(em);
+	len = min(len, em->len - (start - em->start));
+unlock:
+	clear_extent_bit(&BTRFS_I(inode)->io_tree, start, start + len - 1,
+			  EXTENT_LOCKED | EXTENT_DELALLOC | EXTENT_DIRTY, 1,
+			  0, NULL, GFP_NOFS);
+map:
+	bh_result->b_blocknr = (em->block_start + (start - em->start)) >>
+		inode->i_blkbits;
+	bh_result->b_size = len;
+	bh_result->b_bdev = em->bdev;
+	set_buffer_mapped(bh_result);
+	if (create && !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))
+		set_buffer_new(bh_result);
+
+	free_extent_map(em);
+
+	return 0;
+}
+
+struct btrfs_dio_private {
+	struct inode *inode;
+	u64 logical_offset;
+	u64 disk_bytenr;
+	u64 bytes;
+	u32 *csums;
+	void *private;
+};
+
+static void btrfs_endio_direct_read(struct bio *bio, int err)
+{
+	struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1;
+	struct bio_vec *bvec = bio->bi_io_vec;
+	struct btrfs_dio_private *dip = bio->bi_private;
+	struct inode *inode = dip->inode;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	u64 start;
+	u32 *private = dip->csums;
+
+	start = dip->logical_offset;
+	do {
+		if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
+			struct page *page = bvec->bv_page;
+			char *kaddr;
+			u32 csum = ~(u32)0;
+			unsigned long flags;
+
+			local_irq_save(flags);
+			kaddr = kmap_atomic(page, KM_IRQ0);
+			csum = btrfs_csum_data(root, kaddr + bvec->bv_offset,
+					       csum, bvec->bv_len);
+			btrfs_csum_final(csum, (char *)&csum);
+			kunmap_atomic(kaddr, KM_IRQ0);
+			local_irq_restore(flags);
+
+			flush_dcache_page(bvec->bv_page);
+			if (csum != *private) {
+				printk(KERN_ERR "btrfs csum failed ino %lu off"
+				      " %llu csum %u private %u\n",
+				      inode->i_ino, (unsigned long long)start,
+				      csum, *private);
+				err = -EIO;
+			}
+		}
+
+		start += bvec->bv_len;
+		private++;
+		bvec++;
+	} while (bvec <= bvec_end);
+
+	unlock_extent(&BTRFS_I(inode)->io_tree, dip->logical_offset,
+		      dip->logical_offset + dip->bytes - 1, GFP_NOFS);
+	bio->bi_private = dip->private;
+
+	kfree(dip->csums);
+	kfree(dip);
+	dio_end_io(bio, err);
+}
+
+static void btrfs_endio_direct_write(struct bio *bio, int err)
+{
+	struct btrfs_dio_private *dip = bio->bi_private;
+	struct inode *inode = dip->inode;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_trans_handle *trans;
+	struct btrfs_ordered_extent *ordered = NULL;
+	struct extent_state *cached_state = NULL;
+	int ret;
+
+	if (err)
+		goto out_done;
+
+	ret = btrfs_dec_test_ordered_pending(inode, &ordered,
+					     dip->logical_offset, dip->bytes);
+	if (!ret)
+		goto out_done;
+
+	BUG_ON(!ordered);
+
+	trans = btrfs_join_transaction(root, 1);
+	if (!trans) {
+		err = -ENOMEM;
+		goto out;
+	}
+	trans->block_rsv = &root->fs_info->delalloc_block_rsv;
+
+	if (test_bit(BTRFS_ORDERED_NOCOW, &ordered->flags)) {
+		ret = btrfs_ordered_update_i_size(inode, 0, ordered);
+		if (!ret)
+			ret = btrfs_update_inode(trans, root, inode);
+		err = ret;
+		goto out;
+	}
+
+	lock_extent_bits(&BTRFS_I(inode)->io_tree, ordered->file_offset,
+			 ordered->file_offset + ordered->len - 1, 0,
+			 &cached_state, GFP_NOFS);
+
+	if (test_bit(BTRFS_ORDERED_PREALLOC, &ordered->flags)) {
+		ret = btrfs_mark_extent_written(trans, inode,
+						ordered->file_offset,
+						ordered->file_offset +
+						ordered->len);
+		if (ret) {
+			err = ret;
+			goto out_unlock;
+		}
+	} else {
+		ret = insert_reserved_file_extent(trans, inode,
+						  ordered->file_offset,
+						  ordered->start,
+						  ordered->disk_len,
+						  ordered->len,
+						  ordered->len,
+						  0, 0, 0,
+						  BTRFS_FILE_EXTENT_REG);
+		unpin_extent_cache(&BTRFS_I(inode)->extent_tree,
+				   ordered->file_offset, ordered->len);
+		if (ret) {
+			err = ret;
+			WARN_ON(1);
+			goto out_unlock;
+		}
+	}
+
+	add_pending_csums(trans, inode, ordered->file_offset, &ordered->list);
+	btrfs_ordered_update_i_size(inode, 0, ordered);
+	btrfs_update_inode(trans, root, inode);
+out_unlock:
+	unlock_extent_cached(&BTRFS_I(inode)->io_tree, ordered->file_offset,
+			     ordered->file_offset + ordered->len - 1,
+			     &cached_state, GFP_NOFS);
+out:
+	btrfs_delalloc_release_metadata(inode, ordered->len);
+	btrfs_end_transaction(trans, root);
+	btrfs_put_ordered_extent(ordered);
+	btrfs_put_ordered_extent(ordered);
+out_done:
+	bio->bi_private = dip->private;
+
+	kfree(dip->csums);
+	kfree(dip);
+	dio_end_io(bio, err);
+}
+
+static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw,
+				    struct bio *bio, int mirror_num,
+				    unsigned long bio_flags, u64 offset)
+{
+	int ret;
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	ret = btrfs_csum_one_bio(root, inode, bio, offset, 1);
+	BUG_ON(ret);
+	return 0;
+}
+
+static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
+				loff_t file_offset)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_dio_private *dip;
+	struct bio_vec *bvec = bio->bi_io_vec;
+	u64 start;
+	int skip_sum;
+	int write = rw & (1 << BIO_RW);
+	int ret = 0;
+
+	skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
+
+	dip = kmalloc(sizeof(*dip), GFP_NOFS);
+	if (!dip) {
+		ret = -ENOMEM;
+		goto free_ordered;
+	}
+	dip->csums = NULL;
+
+	if (!skip_sum) {
+		dip->csums = kmalloc(sizeof(u32) * bio->bi_vcnt, GFP_NOFS);
+		if (!dip->csums) {
+			ret = -ENOMEM;
+			goto free_ordered;
+		}
+	}
+
+	dip->private = bio->bi_private;
+	dip->inode = inode;
+	dip->logical_offset = file_offset;
+
+	start = dip->logical_offset;
+	dip->bytes = 0;
+	do {
+		dip->bytes += bvec->bv_len;
+		bvec++;
+	} while (bvec <= (bio->bi_io_vec + bio->bi_vcnt - 1));
+
+	dip->disk_bytenr = (u64)bio->bi_sector << 9;
+	bio->bi_private = dip;
+
+	if (write)
+		bio->bi_end_io = btrfs_endio_direct_write;
+	else
+		bio->bi_end_io = btrfs_endio_direct_read;
+
+	ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
+	if (ret)
+		goto out_err;
+
+	if (write && !skip_sum) {
+		ret = btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
+				   inode, rw, bio, 0, 0,
+				   dip->logical_offset,
+				   __btrfs_submit_bio_start_direct_io,
+				   __btrfs_submit_bio_done);
+		if (ret)
+			goto out_err;
+		return;
+	} else if (!skip_sum)
+		btrfs_lookup_bio_sums_dio(root, inode, bio,
+					  dip->logical_offset, dip->csums);
+
+	ret = btrfs_map_bio(root, rw, bio, 0, 1);
+	if (ret)
+		goto out_err;
+	return;
+out_err:
+	kfree(dip->csums);
+	kfree(dip);
+free_ordered:
+	/*
+	 * If this is a write, we need to clean up the reserved space and kill
+	 * the ordered extent.
+	 */
+	if (write) {
+		struct btrfs_ordered_extent *ordered;
+		ordered = btrfs_lookup_ordered_extent(inode,
+						      dip->logical_offset);
+		if (!test_bit(BTRFS_ORDERED_PREALLOC, &ordered->flags) &&
+		    !test_bit(BTRFS_ORDERED_NOCOW, &ordered->flags))
+			btrfs_free_reserved_extent(root, ordered->start,
+						   ordered->disk_len);
+		btrfs_put_ordered_extent(ordered);
+		btrfs_put_ordered_extent(ordered);
+	}
+	bio_endio(bio, ret);
+}
+
+static ssize_t check_direct_IO(struct btrfs_root *root, int rw, struct kiocb *iocb,
+			const struct iovec *iov, loff_t offset,
+			unsigned long nr_segs)
+{
+	int seg;
+	size_t size;
+	unsigned long addr;
+	unsigned blocksize_mask = root->sectorsize - 1;
+	ssize_t retval = -EINVAL;
+	loff_t end = offset;
+
+	if (offset & blocksize_mask)
+		goto out;
+
+	/* Check the memory alignment.  Blocks cannot straddle pages */
+	for (seg = 0; seg < nr_segs; seg++) {
+		addr = (unsigned long)iov[seg].iov_base;
+		size = iov[seg].iov_len;
+		end += size;
+		if ((addr & blocksize_mask) || (size & blocksize_mask)) 
+			goto out;
+	}
+	retval = 0;
+out:
+	return retval;
+}
 static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb,
 			const struct iovec *iov, loff_t offset,
 			unsigned long nr_segs)
 {
-	return -EINVAL;
+	struct file *file = iocb->ki_filp;
+	struct inode *inode = file->f_mapping->host;
+	struct btrfs_ordered_extent *ordered;
+	struct extent_state *cached_state = NULL;
+	u64 lockstart, lockend;
+	ssize_t ret;
+	int writing = rw & WRITE;
+	int write_bits = 0;
+	size_t count = iov_length(iov, nr_segs);
+
+	if (check_direct_IO(BTRFS_I(inode)->root, rw, iocb, iov,
+			    offset, nr_segs)) {
+		return 0;
+	}
+
+	lockstart = offset;
+	lockend = offset + count - 1;
+
+	if (writing) {
+		ret = btrfs_delalloc_reserve_space(inode, count);
+		if (ret)
+			goto out;
+	}
+
+	while (1) {
+		lock_extent_bits(&BTRFS_I(inode)->io_tree, lockstart, lockend,
+				 0, &cached_state, GFP_NOFS);
+		/*
+		 * We're concerned with the entire range that we're going to be
+		 * doing DIO to, so we need to make sure theres no ordered
+		 * extents in this range.
+		 */
+		ordered = btrfs_lookup_ordered_range(inode, lockstart,
+						     lockend - lockstart + 1);
+		if (!ordered)
+			break;
+		unlock_extent_cached(&BTRFS_I(inode)->io_tree, lockstart, lockend,
+				     &cached_state, GFP_NOFS);
+		btrfs_start_ordered_extent(inode, ordered, 1);
+		btrfs_put_ordered_extent(ordered);
+		cond_resched();
+	}
+
+	/*
+	 * we don't use btrfs_set_extent_delalloc because we don't want
+	 * the dirty or uptodate bits
+	 */
+	if (writing) {
+		write_bits = EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING;
+		ret = set_extent_bit(&BTRFS_I(inode)->io_tree, lockstart, lockend,
+				     EXTENT_DELALLOC, 0, NULL, &cached_state,
+				     GFP_NOFS);
+		if (ret) {
+			clear_extent_bit(&BTRFS_I(inode)->io_tree, lockstart,
+					 lockend, EXTENT_LOCKED | write_bits,
+					 1, 0, &cached_state, GFP_NOFS);
+			goto out;
+		}
+	}
+
+	free_extent_state(cached_state);
+	cached_state = NULL;
+
+	ret = __blockdev_direct_IO(rw, iocb, inode,
+		   BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev,
+		   iov, offset, nr_segs, btrfs_get_blocks_direct, NULL,
+		   btrfs_submit_direct, 0);
+
+	if (ret < 0 && ret != -EIOCBQUEUED) {
+		clear_extent_bit(&BTRFS_I(inode)->io_tree, offset,
+			      offset + iov_length(iov, nr_segs) - 1,
+			      EXTENT_LOCKED | write_bits, 1, 0,
+			      &cached_state, GFP_NOFS);
+	} else if (ret >= 0 && ret < iov_length(iov, nr_segs)) {
+		/*
+		 * We're falling back to buffered, unlock the section we didn't
+		 * do IO on.
+		 */
+		clear_extent_bit(&BTRFS_I(inode)->io_tree, offset + ret,
+			      offset + iov_length(iov, nr_segs) - 1,
+			      EXTENT_LOCKED | write_bits, 1, 0,
+			      &cached_state, GFP_NOFS);
+	}
+out:
+	free_extent_state(cached_state);
+	return ret;
 }
 
 static int btrfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
@@ -5034,7 +6003,7 @@
 	u64 page_start;
 	u64 page_end;
 
-	ret = btrfs_check_data_free_space(root, inode, PAGE_CACHE_SIZE);
+	ret  = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE);
 	if (ret) {
 		if (ret == -ENOMEM)
 			ret = VM_FAULT_OOM;
@@ -5043,13 +6012,6 @@
 		goto out;
 	}
 
-	ret = btrfs_reserve_metadata_for_delalloc(root, inode, 1);
-	if (ret) {
-		btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
-		ret = VM_FAULT_SIGBUS;
-		goto out;
-	}
-
 	ret = VM_FAULT_NOPAGE; /* make the VM retry the fault */
 again:
 	lock_page(page);
@@ -5059,7 +6021,6 @@
 
 	if ((page->mapping != inode->i_mapping) ||
 	    (page_start >= size)) {
-		btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
 		/* page got truncated out from underneath us */
 		goto out_unlock;
 	}
@@ -5100,7 +6061,6 @@
 		unlock_extent_cached(io_tree, page_start, page_end,
 				     &cached_state, GFP_NOFS);
 		ret = VM_FAULT_SIGBUS;
-		btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
 		goto out_unlock;
 	}
 	ret = 0;
@@ -5127,10 +6087,10 @@
 	unlock_extent_cached(io_tree, page_start, page_end, &cached_state, GFP_NOFS);
 
 out_unlock:
-	btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
 	if (!ret)
 		return VM_FAULT_LOCKED;
 	unlock_page(page);
+	btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
 out:
 	return ret;
 }
@@ -5155,8 +6115,10 @@
 	btrfs_wait_ordered_range(inode, inode->i_size & (~mask), (u64)-1);
 	btrfs_ordered_update_i_size(inode, inode->i_size, NULL);
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_start_transaction(root, 0);
+	BUG_ON(IS_ERR(trans));
 	btrfs_set_trans_block_group(trans, inode);
+	trans->block_rsv = root->orphan_block_rsv;
 
 	/*
 	 * setattr is responsible for setting the ordered_data_close flag,
@@ -5179,6 +6141,23 @@
 		btrfs_add_ordered_operation(trans, root, inode);
 
 	while (1) {
+		if (!trans) {
+			trans = btrfs_start_transaction(root, 0);
+			BUG_ON(IS_ERR(trans));
+			btrfs_set_trans_block_group(trans, inode);
+			trans->block_rsv = root->orphan_block_rsv;
+		}
+
+		ret = btrfs_block_rsv_check(trans, root,
+					    root->orphan_block_rsv, 0, 5);
+		if (ret) {
+			BUG_ON(ret != -EAGAIN);
+			ret = btrfs_commit_transaction(trans, root);
+			BUG_ON(ret);
+			trans = NULL;
+			continue;
+		}
+
 		ret = btrfs_truncate_inode_items(trans, root, inode,
 						 inode->i_size,
 						 BTRFS_EXTENT_DATA_KEY);
@@ -5190,10 +6169,8 @@
 
 		nr = trans->blocks_used;
 		btrfs_end_transaction(trans, root);
+		trans = NULL;
 		btrfs_btree_balance_dirty(root, nr);
-
-		trans = btrfs_start_transaction(root, 1);
-		btrfs_set_trans_block_group(trans, inode);
 	}
 
 	if (ret == 0 && inode->i_nlink > 0) {
@@ -5254,21 +6231,47 @@
 struct inode *btrfs_alloc_inode(struct super_block *sb)
 {
 	struct btrfs_inode *ei;
+	struct inode *inode;
 
 	ei = kmem_cache_alloc(btrfs_inode_cachep, GFP_NOFS);
 	if (!ei)
 		return NULL;
+
+	ei->root = NULL;
+	ei->space_info = NULL;
+	ei->generation = 0;
+	ei->sequence = 0;
 	ei->last_trans = 0;
 	ei->last_sub_trans = 0;
 	ei->logged_trans = 0;
-	ei->outstanding_extents = 0;
-	ei->reserved_extents = 0;
-	ei->root = NULL;
+	ei->delalloc_bytes = 0;
+	ei->reserved_bytes = 0;
+	ei->disk_i_size = 0;
+	ei->flags = 0;
+	ei->index_cnt = (u64)-1;
+	ei->last_unlink_trans = 0;
+
 	spin_lock_init(&ei->accounting_lock);
+	atomic_set(&ei->outstanding_extents, 0);
+	ei->reserved_extents = 0;
+
+	ei->ordered_data_close = 0;
+	ei->orphan_meta_reserved = 0;
+	ei->dummy_inode = 0;
+	ei->force_compress = 0;
+
+	inode = &ei->vfs_inode;
+	extent_map_tree_init(&ei->extent_tree, GFP_NOFS);
+	extent_io_tree_init(&ei->io_tree, &inode->i_data, GFP_NOFS);
+	extent_io_tree_init(&ei->io_failure_tree, &inode->i_data, GFP_NOFS);
+	mutex_init(&ei->log_mutex);
 	btrfs_ordered_inode_tree_init(&ei->ordered_tree);
 	INIT_LIST_HEAD(&ei->i_orphan);
+	INIT_LIST_HEAD(&ei->delalloc_inodes);
 	INIT_LIST_HEAD(&ei->ordered_operations);
-	return &ei->vfs_inode;
+	RB_CLEAR_NODE(&ei->rb_node);
+
+	return inode;
 }
 
 void btrfs_destroy_inode(struct inode *inode)
@@ -5278,6 +6281,8 @@
 
 	WARN_ON(!list_empty(&inode->i_dentry));
 	WARN_ON(inode->i_data.nrpages);
+	WARN_ON(atomic_read(&BTRFS_I(inode)->outstanding_extents));
+	WARN_ON(BTRFS_I(inode)->reserved_extents);
 
 	/*
 	 * This can happen where we create an inode, but somebody else also
@@ -5298,13 +6303,13 @@
 		spin_unlock(&root->fs_info->ordered_extent_lock);
 	}
 
-	spin_lock(&root->list_lock);
+	spin_lock(&root->orphan_lock);
 	if (!list_empty(&BTRFS_I(inode)->i_orphan)) {
 		printk(KERN_INFO "BTRFS: inode %lu still on the orphan list\n",
 		       inode->i_ino);
 		list_del_init(&BTRFS_I(inode)->i_orphan);
 	}
-	spin_unlock(&root->list_lock);
+	spin_unlock(&root->orphan_lock);
 
 	while (1) {
 		ordered = btrfs_lookup_first_ordered_extent(inode, (u64)-1);
@@ -5425,19 +6430,6 @@
 	if (S_ISDIR(old_inode->i_mode) && new_inode &&
 	    new_inode->i_size > BTRFS_EMPTY_DIR_SIZE)
 		return -ENOTEMPTY;
-
-	/*
-	 * We want to reserve the absolute worst case amount of items.  So if
-	 * both inodes are subvols and we need to unlink them then that would
-	 * require 4 item modifications, but if they are both normal inodes it
-	 * would require 5 item modifications, so we'll assume their normal
-	 * inodes.  So 5 * 2 is 10, plus 1 for the new link, so 11 total items
-	 * should cover the worst case number of items we'll modify.
-	 */
-	ret = btrfs_reserve_metadata_space(root, 11);
-	if (ret)
-		return ret;
-
 	/*
 	 * we're using rename to replace one file with another.
 	 * and the replacement file is large.  Start IO on it now so
@@ -5450,8 +6442,18 @@
 	/* close the racy window with snapshot create/destroy ioctl */
 	if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
 		down_read(&root->fs_info->subvol_sem);
+	/*
+	 * We want to reserve the absolute worst case amount of items.  So if
+	 * both inodes are subvols and we need to unlink them then that would
+	 * require 4 item modifications, but if they are both normal inodes it
+	 * would require 5 item modifications, so we'll assume their normal
+	 * inodes.  So 5 * 2 is 10, plus 1 for the new link, so 11 total items
+	 * should cover the worst case number of items we'll modify.
+	 */
+	trans = btrfs_start_transaction(root, 20);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	trans = btrfs_start_transaction(root, 1);
 	btrfs_set_trans_block_group(trans, new_dir);
 
 	if (dest != root)
@@ -5550,7 +6552,6 @@
 	if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
 		up_read(&root->fs_info->subvol_sem);
 
-	btrfs_unreserve_metadata_space(root, 11);
 	return ret;
 }
 
@@ -5602,6 +6603,38 @@
 	return 0;
 }
 
+int btrfs_start_one_delalloc_inode(struct btrfs_root *root, int delay_iput)
+{
+	struct btrfs_inode *binode;
+	struct inode *inode = NULL;
+
+	spin_lock(&root->fs_info->delalloc_lock);
+	while (!list_empty(&root->fs_info->delalloc_inodes)) {
+		binode = list_entry(root->fs_info->delalloc_inodes.next,
+				    struct btrfs_inode, delalloc_inodes);
+		inode = igrab(&binode->vfs_inode);
+		if (inode) {
+			list_move_tail(&binode->delalloc_inodes,
+				       &root->fs_info->delalloc_inodes);
+			break;
+		}
+
+		list_del_init(&binode->delalloc_inodes);
+		cond_resched_lock(&root->fs_info->delalloc_lock);
+	}
+	spin_unlock(&root->fs_info->delalloc_lock);
+
+	if (inode) {
+		write_inode_now(inode, 0);
+		if (delay_iput)
+			btrfs_add_delayed_iput(inode);
+		else
+			iput(inode);
+		return 1;
+	}
+	return 0;
+}
+
 static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
 			 const char *symname)
 {
@@ -5625,26 +6658,20 @@
 	if (name_len > BTRFS_MAX_INLINE_DATA_SIZE(root))
 		return -ENAMETOOLONG;
 
+	err = btrfs_find_free_objectid(NULL, root, dir->i_ino, &objectid);
+	if (err)
+		return err;
 	/*
 	 * 2 items for inode item and ref
 	 * 2 items for dir items
 	 * 1 item for xattr if selinux is on
 	 */
-	err = btrfs_reserve_metadata_space(root, 5);
-	if (err)
-		return err;
+	trans = btrfs_start_transaction(root, 5);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans)
-		goto out_fail;
 	btrfs_set_trans_block_group(trans, dir);
 
-	err = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
-	if (err) {
-		err = -ENOSPC;
-		goto out_unlock;
-	}
-
 	inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
 				dentry->d_name.len,
 				dentry->d_parent->d_inode->i_ino, objectid,
@@ -5716,8 +6743,6 @@
 out_unlock:
 	nr = trans->blocks_used;
 	btrfs_end_transaction_throttle(trans, root);
-out_fail:
-	btrfs_unreserve_metadata_space(root, 5);
 	if (drop_inode) {
 		inode_dec_link_count(inode);
 		iput(inode);
@@ -5726,33 +6751,28 @@
 	return err;
 }
 
-static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
-			u64 alloc_hint, int mode, loff_t actual_len)
+int btrfs_prealloc_file_range(struct inode *inode, int mode,
+			      u64 start, u64 num_bytes, u64 min_size,
+			      loff_t actual_len, u64 *alloc_hint)
 {
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
 	struct btrfs_key ins;
 	u64 cur_offset = start;
-	u64 num_bytes = end - start;
 	int ret = 0;
-	u64 i_size;
 
 	while (num_bytes > 0) {
-		trans = btrfs_start_transaction(root, 1);
-
-		ret = btrfs_reserve_extent(trans, root, num_bytes,
-					   root->sectorsize, 0, alloc_hint,
-					   (u64)-1, &ins, 1);
-		if (ret) {
-			WARN_ON(1);
-			goto stop_trans;
+		trans = btrfs_start_transaction(root, 3);
+		if (IS_ERR(trans)) {
+			ret = PTR_ERR(trans);
+			break;
 		}
 
-		ret = btrfs_reserve_metadata_space(root, 3);
+		ret = btrfs_reserve_extent(trans, root, num_bytes, min_size,
+					   0, *alloc_hint, (u64)-1, &ins, 1);
 		if (ret) {
-			btrfs_free_reserved_extent(root, ins.objectid,
-						   ins.offset);
-			goto stop_trans;
+			btrfs_end_transaction(trans, root);
+			break;
 		}
 
 		ret = insert_reserved_file_extent(trans, inode,
@@ -5766,34 +6786,27 @@
 
 		num_bytes -= ins.offset;
 		cur_offset += ins.offset;
-		alloc_hint = ins.objectid + ins.offset;
+		*alloc_hint = ins.objectid + ins.offset;
 
 		inode->i_ctime = CURRENT_TIME;
 		BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC;
 		if (!(mode & FALLOC_FL_KEEP_SIZE) &&
-			(actual_len > inode->i_size) &&
-			(cur_offset > inode->i_size)) {
-
+		    (actual_len > inode->i_size) &&
+		    (cur_offset > inode->i_size)) {
 			if (cur_offset > actual_len)
-				i_size  = actual_len;
+				i_size_write(inode, actual_len);
 			else
-				i_size = cur_offset;
-			i_size_write(inode, i_size);
-			btrfs_ordered_update_i_size(inode, i_size, NULL);
+				i_size_write(inode, cur_offset);
+			i_size_write(inode, cur_offset);
+			btrfs_ordered_update_i_size(inode, cur_offset, NULL);
 		}
 
 		ret = btrfs_update_inode(trans, root, inode);
 		BUG_ON(ret);
 
 		btrfs_end_transaction(trans, root);
-		btrfs_unreserve_metadata_space(root, 3);
 	}
 	return ret;
-
-stop_trans:
-	btrfs_end_transaction(trans, root);
-	return ret;
-
 }
 
 static long btrfs_fallocate(struct inode *inode, int mode,
@@ -5826,8 +6839,7 @@
 			goto out;
 	}
 
-	ret = btrfs_check_data_free_space(BTRFS_I(inode)->root, inode,
-					  alloc_end - alloc_start);
+	ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start);
 	if (ret)
 		goto out;
 
@@ -5872,16 +6884,16 @@
 		if (em->block_start == EXTENT_MAP_HOLE ||
 		    (cur_offset >= inode->i_size &&
 		     !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
-			ret = prealloc_file_range(inode,
-						  cur_offset, last_byte,
-						alloc_hint, mode, offset+len);
+			ret = btrfs_prealloc_file_range(inode, 0, cur_offset,
+							last_byte - cur_offset,
+							1 << inode->i_blkbits,
+							offset + len,
+							&alloc_hint);
 			if (ret < 0) {
 				free_extent_map(em);
 				break;
 			}
 		}
-		if (em->block_start <= EXTENT_MAP_LAST_BYTE)
-			alloc_hint = em->block_start;
 		free_extent_map(em);
 
 		cur_offset = last_byte;
@@ -5893,8 +6905,7 @@
 	unlock_extent_cached(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,
 			     &cached_state, GFP_NOFS);
 
-	btrfs_free_reserved_data_space(BTRFS_I(inode)->root, inode,
-				       alloc_end - alloc_start);
+	btrfs_free_reserved_data_space(inode, alloc_end - alloc_start);
 out:
 	mutex_unlock(&inode->i_mutex);
 	return ret;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 97a9783..4cdb98c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -239,23 +239,19 @@
 	u64 new_dirid = BTRFS_FIRST_FREE_OBJECTID;
 	u64 index = 0;
 
+	ret = btrfs_find_free_objectid(NULL, root->fs_info->tree_root,
+				       0, &objectid);
+	if (ret)
+		return ret;
 	/*
 	 * 1 - inode item
 	 * 2 - refs
 	 * 1 - root item
 	 * 2 - dir items
 	 */
-	ret = btrfs_reserve_metadata_space(root, 6);
-	if (ret)
-		return ret;
-
-	trans = btrfs_start_transaction(root, 1);
-	BUG_ON(!trans);
-
-	ret = btrfs_find_free_objectid(trans, root->fs_info->tree_root,
-				       0, &objectid);
-	if (ret)
-		goto fail;
+	trans = btrfs_start_transaction(root, 6);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
 	leaf = btrfs_alloc_free_block(trans, root, root->leafsize,
 				      0, objectid, NULL, 0, 0, 0);
@@ -345,13 +341,10 @@
 	err = btrfs_commit_transaction(trans, root);
 	if (err && !ret)
 		ret = err;
-
-	btrfs_unreserve_metadata_space(root, 6);
 	return ret;
 }
 
-static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
-			   char *name, int namelen)
+static int create_snapshot(struct btrfs_root *root, struct dentry *dentry)
 {
 	struct inode *inode;
 	struct btrfs_pending_snapshot *pending_snapshot;
@@ -361,40 +354,33 @@
 	if (!root->ref_cows)
 		return -EINVAL;
 
-	/*
-	 * 1 - inode item
-	 * 2 - refs
-	 * 1 - root item
-	 * 2 - dir items
-	 */
-	ret = btrfs_reserve_metadata_space(root, 6);
+	pending_snapshot = kzalloc(sizeof(*pending_snapshot), GFP_NOFS);
+	if (!pending_snapshot)
+		return -ENOMEM;
+
+	btrfs_init_block_rsv(&pending_snapshot->block_rsv);
+	pending_snapshot->dentry = dentry;
+	pending_snapshot->root = root;
+
+	trans = btrfs_start_transaction(root->fs_info->extent_root, 5);
+	if (IS_ERR(trans)) {
+		ret = PTR_ERR(trans);
+		goto fail;
+	}
+
+	ret = btrfs_snap_reserve_metadata(trans, pending_snapshot);
+	BUG_ON(ret);
+
+	list_add(&pending_snapshot->list,
+		 &trans->transaction->pending_snapshots);
+	ret = btrfs_commit_transaction(trans, root->fs_info->extent_root);
+	BUG_ON(ret);
+
+	ret = pending_snapshot->error;
 	if (ret)
 		goto fail;
 
-	pending_snapshot = kzalloc(sizeof(*pending_snapshot), GFP_NOFS);
-	if (!pending_snapshot) {
-		ret = -ENOMEM;
-		btrfs_unreserve_metadata_space(root, 6);
-		goto fail;
-	}
-	pending_snapshot->name = kmalloc(namelen + 1, GFP_NOFS);
-	if (!pending_snapshot->name) {
-		ret = -ENOMEM;
-		kfree(pending_snapshot);
-		btrfs_unreserve_metadata_space(root, 6);
-		goto fail;
-	}
-	memcpy(pending_snapshot->name, name, namelen);
-	pending_snapshot->name[namelen] = '\0';
-	pending_snapshot->dentry = dentry;
-	trans = btrfs_start_transaction(root, 1);
-	BUG_ON(!trans);
-	pending_snapshot->root = root;
-	list_add(&pending_snapshot->list,
-		 &trans->transaction->pending_snapshots);
-	ret = btrfs_commit_transaction(trans, root);
-	BUG_ON(ret);
-	btrfs_unreserve_metadata_space(root, 6);
+	btrfs_orphan_cleanup(pending_snapshot->snap);
 
 	inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry);
 	if (IS_ERR(inode)) {
@@ -405,6 +391,7 @@
 	d_instantiate(dentry, inode);
 	ret = 0;
 fail:
+	kfree(pending_snapshot);
 	return ret;
 }
 
@@ -456,8 +443,7 @@
 		goto out_up_read;
 
 	if (snap_src) {
-		error = create_snapshot(snap_src, dentry,
-					name, namelen);
+		error = create_snapshot(snap_src, dentry);
 	} else {
 		error = create_subvol(BTRFS_I(dir)->root, dentry,
 				      name, namelen);
@@ -601,19 +587,9 @@
 		if (range->flags & BTRFS_DEFRAG_RANGE_COMPRESS)
 			BTRFS_I(inode)->force_compress = 1;
 
-		ret = btrfs_check_data_free_space(root, inode, PAGE_CACHE_SIZE);
-		if (ret) {
-			ret = -ENOSPC;
-			break;
-		}
-
-		ret = btrfs_reserve_metadata_for_delalloc(root, inode, 1);
-		if (ret) {
-			btrfs_free_reserved_data_space(root, inode,
-						       PAGE_CACHE_SIZE);
-			ret = -ENOSPC;
-			break;
-		}
+		ret  = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE);
+		if (ret)
+			goto err_unlock;
 again:
 		if (inode->i_size == 0 ||
 		    i > ((inode->i_size - 1) >> PAGE_CACHE_SHIFT)) {
@@ -622,8 +598,10 @@
 		}
 
 		page = grab_cache_page(inode->i_mapping, i);
-		if (!page)
+		if (!page) {
+			ret = -ENOMEM;
 			goto err_reservations;
+		}
 
 		if (!PageUptodate(page)) {
 			btrfs_readpage(NULL, page);
@@ -631,6 +609,7 @@
 			if (!PageUptodate(page)) {
 				unlock_page(page);
 				page_cache_release(page);
+				ret = -EIO;
 				goto err_reservations;
 			}
 		}
@@ -644,8 +623,7 @@
 		wait_on_page_writeback(page);
 
 		if (PageDirty(page)) {
-			btrfs_free_reserved_data_space(root, inode,
-						       PAGE_CACHE_SIZE);
+			btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
 			goto loop_unlock;
 		}
 
@@ -683,7 +661,6 @@
 		page_cache_release(page);
 		mutex_unlock(&inode->i_mutex);
 
-		btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
 		balance_dirty_pages_ratelimited_nr(inode->i_mapping, 1);
 		i++;
 	}
@@ -713,9 +690,9 @@
 	return 0;
 
 err_reservations:
+	btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
+err_unlock:
 	mutex_unlock(&inode->i_mutex);
-	btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
-	btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
 	return ret;
 }
 
@@ -811,7 +788,7 @@
 		device->name, (unsigned long long)new_size);
 
 	if (new_size > old_size) {
-		trans = btrfs_start_transaction(root, 1);
+		trans = btrfs_start_transaction(root, 0);
 		ret = btrfs_grow_device(trans, device, new_size);
 		btrfs_commit_transaction(trans, root);
 	} else {
@@ -1300,7 +1277,13 @@
 	if (err)
 		goto out_up_write;
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_start_transaction(root, 0);
+	if (IS_ERR(trans)) {
+		err = PTR_ERR(trans);
+		goto out;
+	}
+	trans->block_rsv = &root->fs_info->global_block_rsv;
+
 	ret = btrfs_unlink_subvol(trans, root, dir,
 				dest->root_key.objectid,
 				dentry->d_name.name,
@@ -1314,10 +1297,12 @@
 	dest->root_item.drop_level = 0;
 	btrfs_set_root_refs(&dest->root_item, 0);
 
-	ret = btrfs_insert_orphan_item(trans,
-				root->fs_info->tree_root,
-				dest->root_key.objectid);
-	BUG_ON(ret);
+	if (!xchg(&dest->orphan_item_inserted, 1)) {
+		ret = btrfs_insert_orphan_item(trans,
+					root->fs_info->tree_root,
+					dest->root_key.objectid);
+		BUG_ON(ret);
+	}
 
 	ret = btrfs_commit_transaction(trans, root);
 	BUG_ON(ret);
@@ -1358,8 +1343,10 @@
 			ret = -EPERM;
 			goto out;
 		}
-		btrfs_defrag_root(root, 0);
-		btrfs_defrag_root(root->fs_info->extent_root, 0);
+		ret = btrfs_defrag_root(root, 0);
+		if (ret)
+			goto out;
+		ret = btrfs_defrag_root(root->fs_info->extent_root, 0);
 		break;
 	case S_IFREG:
 		if (!(file->f_mode & FMODE_WRITE)) {
@@ -1389,9 +1376,11 @@
 			/* the rest are all set to zero by kzalloc */
 			range->len = (u64)-1;
 		}
-		btrfs_defrag_file(file, range);
+		ret = btrfs_defrag_file(file, range);
 		kfree(range);
 		break;
+	default:
+		ret = -EINVAL;
 	}
 out:
 	mnt_drop_write(file->f_path.mnt);
@@ -1550,12 +1539,6 @@
 		btrfs_wait_ordered_range(src, off, off+len);
 	}
 
-	trans = btrfs_start_transaction(root, 1);
-	BUG_ON(!trans);
-
-	/* punch hole in destination first */
-	btrfs_drop_extents(trans, inode, off, off + len, &hint_byte, 1);
-
 	/* clone data */
 	key.objectid = src->i_ino;
 	key.type = BTRFS_EXTENT_DATA_KEY;
@@ -1566,7 +1549,7 @@
 		 * note the key will change type as we walk through the
 		 * tree.
 		 */
-		ret = btrfs_search_slot(trans, root, &key, path, 0, 0);
+		ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
 		if (ret < 0)
 			goto out;
 
@@ -1629,12 +1612,31 @@
 			new_key.objectid = inode->i_ino;
 			new_key.offset = key.offset + destoff - off;
 
+			trans = btrfs_start_transaction(root, 1);
+			if (IS_ERR(trans)) {
+				ret = PTR_ERR(trans);
+				goto out;
+			}
+
 			if (type == BTRFS_FILE_EXTENT_REG ||
 			    type == BTRFS_FILE_EXTENT_PREALLOC) {
+				if (off > key.offset) {
+					datao += off - key.offset;
+					datal -= off - key.offset;
+				}
+
+				if (key.offset + datal > off + len)
+					datal = off + len - key.offset;
+
+				ret = btrfs_drop_extents(trans, inode,
+							 new_key.offset,
+							 new_key.offset + datal,
+							 &hint_byte, 1);
+				BUG_ON(ret);
+
 				ret = btrfs_insert_empty_item(trans, root, path,
 							      &new_key, size);
-				if (ret)
-					goto out;
+				BUG_ON(ret);
 
 				leaf = path->nodes[0];
 				slot = path->slots[0];
@@ -1645,14 +1647,6 @@
 				extent = btrfs_item_ptr(leaf, slot,
 						struct btrfs_file_extent_item);
 
-				if (off > key.offset) {
-					datao += off - key.offset;
-					datal -= off - key.offset;
-				}
-
-				if (key.offset + datal > off + len)
-					datal = off + len - key.offset;
-
 				/* disko == 0 means it's a hole */
 				if (!disko)
 					datao = 0;
@@ -1683,14 +1677,21 @@
 
 				if (comp && (skip || trim)) {
 					ret = -EINVAL;
+					btrfs_end_transaction(trans, root);
 					goto out;
 				}
 				size -= skip + trim;
 				datal -= skip + trim;
+
+				ret = btrfs_drop_extents(trans, inode,
+							 new_key.offset,
+							 new_key.offset + datal,
+							 &hint_byte, 1);
+				BUG_ON(ret);
+
 				ret = btrfs_insert_empty_item(trans, root, path,
 							      &new_key, size);
-				if (ret)
-					goto out;
+				BUG_ON(ret);
 
 				if (skip) {
 					u32 start =
@@ -1708,8 +1709,17 @@
 			}
 
 			btrfs_mark_buffer_dirty(leaf);
-		}
+			btrfs_release_path(root, path);
 
+			inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+			if (new_key.offset + datal > inode->i_size)
+				btrfs_i_size_write(inode,
+						   new_key.offset + datal);
+			BTRFS_I(inode)->flags = BTRFS_I(src)->flags;
+			ret = btrfs_update_inode(trans, root, inode);
+			BUG_ON(ret);
+			btrfs_end_transaction(trans, root);
+		}
 next:
 		btrfs_release_path(root, path);
 		key.offset++;
@@ -1717,17 +1727,7 @@
 	ret = 0;
 out:
 	btrfs_release_path(root, path);
-	if (ret == 0) {
-		inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-		if (destoff + olen > inode->i_size)
-			btrfs_i_size_write(inode, destoff + olen);
-		BTRFS_I(inode)->flags = BTRFS_I(src)->flags;
-		ret = btrfs_update_inode(trans, root, inode);
-	}
-	btrfs_end_transaction(trans, root);
 	unlock_extent(&BTRFS_I(src)->io_tree, off, off+len, GFP_NOFS);
-	if (ret)
-		vmtruncate(inode, 0);
 out_unlock:
 	mutex_unlock(&src->i_mutex);
 	mutex_unlock(&inode->i_mutex);
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index a127c0e..e56c72b 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -124,6 +124,15 @@
 	return 1;
 }
 
+static int range_overlaps(struct btrfs_ordered_extent *entry, u64 file_offset,
+			  u64 len)
+{
+	if (file_offset + len <= entry->file_offset ||
+	    entry->file_offset + entry->len <= file_offset)
+		return 0;
+	return 1;
+}
+
 /*
  * look find the first ordered struct that has this offset, otherwise
  * the first one less than this offset
@@ -161,8 +170,9 @@
  * The tree is given a single reference on the ordered extent that was
  * inserted.
  */
-int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
-			     u64 start, u64 len, u64 disk_len, int type)
+static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
+				      u64 start, u64 len, u64 disk_len,
+				      int type, int dio)
 {
 	struct btrfs_ordered_inode_tree *tree;
 	struct rb_node *node;
@@ -182,6 +192,9 @@
 	if (type != BTRFS_ORDERED_IO_DONE && type != BTRFS_ORDERED_COMPLETE)
 		set_bit(type, &entry->flags);
 
+	if (dio)
+		set_bit(BTRFS_ORDERED_DIRECT, &entry->flags);
+
 	/* one ref for the tree */
 	atomic_set(&entry->refs, 1);
 	init_waitqueue_head(&entry->wait);
@@ -203,6 +216,20 @@
 	return 0;
 }
 
+int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
+			     u64 start, u64 len, u64 disk_len, int type)
+{
+	return __btrfs_add_ordered_extent(inode, file_offset, start, len,
+					  disk_len, type, 0);
+}
+
+int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
+				 u64 start, u64 len, u64 disk_len, int type)
+{
+	return __btrfs_add_ordered_extent(inode, file_offset, start, len,
+					  disk_len, type, 1);
+}
+
 /*
  * Add a struct btrfs_ordered_sum into the list of checksums to be inserted
  * when an ordered extent is finished.  If the list covers more than one
@@ -311,13 +338,6 @@
 	tree->last = NULL;
 	set_bit(BTRFS_ORDERED_COMPLETE, &entry->flags);
 
-	spin_lock(&BTRFS_I(inode)->accounting_lock);
-	WARN_ON(!BTRFS_I(inode)->outstanding_extents);
-	BTRFS_I(inode)->outstanding_extents--;
-	spin_unlock(&BTRFS_I(inode)->accounting_lock);
-	btrfs_unreserve_metadata_for_delalloc(BTRFS_I(inode)->root,
-					      inode, 1);
-
 	spin_lock(&root->fs_info->ordered_extent_lock);
 	list_del_init(&entry->root_extent_list);
 
@@ -491,7 +511,8 @@
 	 * start IO on any dirty ones so the wait doesn't stall waiting
 	 * for pdflush to find them
 	 */
-	filemap_fdatawrite_range(inode->i_mapping, start, end);
+	if (!test_bit(BTRFS_ORDERED_DIRECT, &entry->flags))
+		filemap_fdatawrite_range(inode->i_mapping, start, end);
 	if (wait) {
 		wait_event(entry->wait, test_bit(BTRFS_ORDERED_COMPLETE,
 						 &entry->flags));
@@ -588,6 +609,47 @@
 	return entry;
 }
 
+/* Since the DIO code tries to lock a wide area we need to look for any ordered
+ * extents that exist in the range, rather than just the start of the range.
+ */
+struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
+							u64 file_offset,
+							u64 len)
+{
+	struct btrfs_ordered_inode_tree *tree;
+	struct rb_node *node;
+	struct btrfs_ordered_extent *entry = NULL;
+
+	tree = &BTRFS_I(inode)->ordered_tree;
+	spin_lock(&tree->lock);
+	node = tree_search(tree, file_offset);
+	if (!node) {
+		node = tree_search(tree, file_offset + len);
+		if (!node)
+			goto out;
+	}
+
+	while (1) {
+		entry = rb_entry(node, struct btrfs_ordered_extent, rb_node);
+		if (range_overlaps(entry, file_offset, len))
+			break;
+
+		if (entry->file_offset >= file_offset + len) {
+			entry = NULL;
+			break;
+		}
+		entry = NULL;
+		node = rb_next(node);
+		if (!node)
+			break;
+	}
+out:
+	if (entry)
+		atomic_inc(&entry->refs);
+	spin_unlock(&tree->lock);
+	return entry;
+}
+
 /*
  * lookup and return any extent before 'file_offset'.  NULL is returned
  * if none is found
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index c82f76a..8ac3654 100644
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -72,6 +72,8 @@
 
 #define BTRFS_ORDERED_PREALLOC 4 /* set when writing to prealloced extent */
 
+#define BTRFS_ORDERED_DIRECT 5 /* set when we're doing DIO with this extent */
+
 struct btrfs_ordered_extent {
 	/* logical offset in the file */
 	u64 file_offset;
@@ -140,7 +142,9 @@
 				   struct btrfs_ordered_extent **cached,
 				   u64 file_offset, u64 io_size);
 int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
-			     u64 start, u64 len, u64 disk_len, int tyep);
+			     u64 start, u64 len, u64 disk_len, int type);
+int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
+				 u64 start, u64 len, u64 disk_len, int type);
 int btrfs_add_ordered_sum(struct inode *inode,
 			  struct btrfs_ordered_extent *entry,
 			  struct btrfs_ordered_sum *sum);
@@ -151,6 +155,9 @@
 int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
 struct btrfs_ordered_extent *
 btrfs_lookup_first_ordered_extent(struct inode * inode, u64 file_offset);
+struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
+							u64 file_offset,
+							u64 len);
 int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
 				struct btrfs_ordered_extent *ordered);
 int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u32 *sum);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index e558dd9..05d41e5 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -44,8 +44,12 @@
 struct backref_node {
 	struct rb_node rb_node;
 	u64 bytenr;
-	/* objectid tree block owner */
+
+	u64 new_bytenr;
+	/* objectid of tree block owner, can be not uptodate */
 	u64 owner;
+	/* link to pending, changed or detached list */
+	struct list_head list;
 	/* list of upper level blocks reference this block */
 	struct list_head upper;
 	/* list of child blocks in the cache */
@@ -56,9 +60,9 @@
 	struct extent_buffer *eb;
 	/* level of tree block */
 	unsigned int level:8;
-	/* 1 if the block is root of old snapshot */
-	unsigned int old_root:1;
-	/* 1 if no child blocks in the cache */
+	/* is the block in non-reference counted tree */
+	unsigned int cowonly:1;
+	/* 1 if no child node in the cache */
 	unsigned int lowest:1;
 	/* is the extent buffer locked */
 	unsigned int locked:1;
@@ -66,6 +70,16 @@
 	unsigned int processed:1;
 	/* have backrefs of this block been checked */
 	unsigned int checked:1;
+	/*
+	 * 1 if corresponding block has been cowed but some upper
+	 * level block pointers may not point to the new location
+	 */
+	unsigned int pending:1;
+	/*
+	 * 1 if the backref node isn't connected to any other
+	 * backref node.
+	 */
+	unsigned int detached:1;
 };
 
 /*
@@ -74,7 +88,6 @@
 struct backref_edge {
 	struct list_head list[2];
 	struct backref_node *node[2];
-	u64 blockptr;
 };
 
 #define LOWER	0
@@ -83,9 +96,25 @@
 struct backref_cache {
 	/* red black tree of all backref nodes in the cache */
 	struct rb_root rb_root;
-	/* list of backref nodes with no child block in the cache */
+	/* for passing backref nodes to btrfs_reloc_cow_block */
+	struct backref_node *path[BTRFS_MAX_LEVEL];
+	/*
+	 * list of blocks that have been cowed but some block
+	 * pointers in upper level blocks may not reflect the
+	 * new location
+	 */
 	struct list_head pending[BTRFS_MAX_LEVEL];
-	spinlock_t lock;
+	/* list of backref nodes with no child node */
+	struct list_head leaves;
+	/* list of blocks that have been cowed in current transaction */
+	struct list_head changed;
+	/* list of detached backref node. */
+	struct list_head detached;
+
+	u64 last_trans;
+
+	int nr_nodes;
+	int nr_edges;
 };
 
 /*
@@ -113,15 +142,6 @@
 	unsigned int key_ready:1;
 };
 
-/* inode vector */
-#define INODEVEC_SIZE 16
-
-struct inodevec {
-	struct list_head list;
-	struct inode *inode[INODEVEC_SIZE];
-	int nr;
-};
-
 #define MAX_EXTENTS 128
 
 struct file_extent_cluster {
@@ -138,36 +158,43 @@
 	struct btrfs_root *extent_root;
 	/* inode for moving data */
 	struct inode *data_inode;
-	struct btrfs_workers workers;
+
+	struct btrfs_block_rsv *block_rsv;
+
+	struct backref_cache backref_cache;
+
+	struct file_extent_cluster cluster;
 	/* tree blocks have been processed */
 	struct extent_io_tree processed_blocks;
 	/* map start of tree root to corresponding reloc tree */
 	struct mapping_tree reloc_root_tree;
 	/* list of reloc trees */
 	struct list_head reloc_roots;
+	/* size of metadata reservation for merging reloc trees */
+	u64 merging_rsv_size;
+	/* size of relocated tree nodes */
+	u64 nodes_relocated;
+
 	u64 search_start;
 	u64 extents_found;
-	u64 extents_skipped;
-	int stage;
-	int create_reloc_root;
+
+	int block_rsv_retries;
+
+	unsigned int stage:8;
+	unsigned int create_reloc_tree:1;
+	unsigned int merge_reloc_tree:1;
 	unsigned int found_file_extent:1;
-	unsigned int found_old_snapshot:1;
+	unsigned int commit_transaction:1;
 };
 
 /* stages of data relocation */
 #define MOVE_DATA_EXTENTS	0
 #define UPDATE_DATA_PTRS	1
 
-/*
- * merge reloc tree to corresponding fs tree in worker threads
- */
-struct async_merge {
-	struct btrfs_work work;
-	struct reloc_control *rc;
-	struct btrfs_root *root;
-	struct completion *done;
-	atomic_t *num_pending;
-};
+static void remove_backref_node(struct backref_cache *cache,
+				struct backref_node *node);
+static void __mark_block_processed(struct reloc_control *rc,
+				   struct backref_node *node);
 
 static void mapping_tree_init(struct mapping_tree *tree)
 {
@@ -181,15 +208,80 @@
 	cache->rb_root = RB_ROOT;
 	for (i = 0; i < BTRFS_MAX_LEVEL; i++)
 		INIT_LIST_HEAD(&cache->pending[i]);
-	spin_lock_init(&cache->lock);
+	INIT_LIST_HEAD(&cache->changed);
+	INIT_LIST_HEAD(&cache->detached);
+	INIT_LIST_HEAD(&cache->leaves);
 }
 
-static void backref_node_init(struct backref_node *node)
+static void backref_cache_cleanup(struct backref_cache *cache)
 {
-	memset(node, 0, sizeof(*node));
-	INIT_LIST_HEAD(&node->upper);
-	INIT_LIST_HEAD(&node->lower);
-	RB_CLEAR_NODE(&node->rb_node);
+	struct backref_node *node;
+	int i;
+
+	while (!list_empty(&cache->detached)) {
+		node = list_entry(cache->detached.next,
+				  struct backref_node, list);
+		remove_backref_node(cache, node);
+	}
+
+	while (!list_empty(&cache->leaves)) {
+		node = list_entry(cache->leaves.next,
+				  struct backref_node, lower);
+		remove_backref_node(cache, node);
+	}
+
+	cache->last_trans = 0;
+
+	for (i = 0; i < BTRFS_MAX_LEVEL; i++)
+		BUG_ON(!list_empty(&cache->pending[i]));
+	BUG_ON(!list_empty(&cache->changed));
+	BUG_ON(!list_empty(&cache->detached));
+	BUG_ON(!RB_EMPTY_ROOT(&cache->rb_root));
+	BUG_ON(cache->nr_nodes);
+	BUG_ON(cache->nr_edges);
+}
+
+static struct backref_node *alloc_backref_node(struct backref_cache *cache)
+{
+	struct backref_node *node;
+
+	node = kzalloc(sizeof(*node), GFP_NOFS);
+	if (node) {
+		INIT_LIST_HEAD(&node->list);
+		INIT_LIST_HEAD(&node->upper);
+		INIT_LIST_HEAD(&node->lower);
+		RB_CLEAR_NODE(&node->rb_node);
+		cache->nr_nodes++;
+	}
+	return node;
+}
+
+static void free_backref_node(struct backref_cache *cache,
+			      struct backref_node *node)
+{
+	if (node) {
+		cache->nr_nodes--;
+		kfree(node);
+	}
+}
+
+static struct backref_edge *alloc_backref_edge(struct backref_cache *cache)
+{
+	struct backref_edge *edge;
+
+	edge = kzalloc(sizeof(*edge), GFP_NOFS);
+	if (edge)
+		cache->nr_edges++;
+	return edge;
+}
+
+static void free_backref_edge(struct backref_cache *cache,
+			      struct backref_edge *edge)
+{
+	if (edge) {
+		cache->nr_edges--;
+		kfree(edge);
+	}
 }
 
 static struct rb_node *tree_insert(struct rb_root *root, u64 bytenr,
@@ -250,6 +342,7 @@
 		edges[idx++] = edge;
 		node = edge->node[UPPER];
 	}
+	BUG_ON(node->detached);
 	*index = idx;
 	return node;
 }
@@ -281,13 +374,18 @@
 	return NULL;
 }
 
+static void unlock_node_buffer(struct backref_node *node)
+{
+	if (node->locked) {
+		btrfs_tree_unlock(node->eb);
+		node->locked = 0;
+	}
+}
+
 static void drop_node_buffer(struct backref_node *node)
 {
 	if (node->eb) {
-		if (node->locked) {
-			btrfs_tree_unlock(node->eb);
-			node->locked = 0;
-		}
+		unlock_node_buffer(node);
 		free_extent_buffer(node->eb);
 		node->eb = NULL;
 	}
@@ -296,14 +394,14 @@
 static void drop_backref_node(struct backref_cache *tree,
 			      struct backref_node *node)
 {
-	BUG_ON(!node->lowest);
 	BUG_ON(!list_empty(&node->upper));
 
 	drop_node_buffer(node);
+	list_del(&node->list);
 	list_del(&node->lower);
-
-	rb_erase(&node->rb_node, &tree->rb_root);
-	kfree(node);
+	if (!RB_EMPTY_NODE(&node->rb_node))
+		rb_erase(&node->rb_node, &tree->rb_root);
+	free_backref_node(tree, node);
 }
 
 /*
@@ -318,27 +416,121 @@
 	if (!node)
 		return;
 
-	BUG_ON(!node->lowest);
+	BUG_ON(!node->lowest && !node->detached);
 	while (!list_empty(&node->upper)) {
 		edge = list_entry(node->upper.next, struct backref_edge,
 				  list[LOWER]);
 		upper = edge->node[UPPER];
 		list_del(&edge->list[LOWER]);
 		list_del(&edge->list[UPPER]);
-		kfree(edge);
+		free_backref_edge(cache, edge);
+
+		if (RB_EMPTY_NODE(&upper->rb_node)) {
+			BUG_ON(!list_empty(&node->upper));
+			drop_backref_node(cache, node);
+			node = upper;
+			node->lowest = 1;
+			continue;
+		}
 		/*
-		 * add the node to pending list if no other
+		 * add the node to leaf node list if no other
 		 * child block cached.
 		 */
 		if (list_empty(&upper->lower)) {
-			list_add_tail(&upper->lower,
-				      &cache->pending[upper->level]);
+			list_add_tail(&upper->lower, &cache->leaves);
 			upper->lowest = 1;
 		}
 	}
+
 	drop_backref_node(cache, node);
 }
 
+static void update_backref_node(struct backref_cache *cache,
+				struct backref_node *node, u64 bytenr)
+{
+	struct rb_node *rb_node;
+	rb_erase(&node->rb_node, &cache->rb_root);
+	node->bytenr = bytenr;
+	rb_node = tree_insert(&cache->rb_root, node->bytenr, &node->rb_node);
+	BUG_ON(rb_node);
+}
+
+/*
+ * update backref cache after a transaction commit
+ */
+static int update_backref_cache(struct btrfs_trans_handle *trans,
+				struct backref_cache *cache)
+{
+	struct backref_node *node;
+	int level = 0;
+
+	if (cache->last_trans == 0) {
+		cache->last_trans = trans->transid;
+		return 0;
+	}
+
+	if (cache->last_trans == trans->transid)
+		return 0;
+
+	/*
+	 * detached nodes are used to avoid unnecessary backref
+	 * lookup. transaction commit changes the extent tree.
+	 * so the detached nodes are no longer useful.
+	 */
+	while (!list_empty(&cache->detached)) {
+		node = list_entry(cache->detached.next,
+				  struct backref_node, list);
+		remove_backref_node(cache, node);
+	}
+
+	while (!list_empty(&cache->changed)) {
+		node = list_entry(cache->changed.next,
+				  struct backref_node, list);
+		list_del_init(&node->list);
+		BUG_ON(node->pending);
+		update_backref_node(cache, node, node->new_bytenr);
+	}
+
+	/*
+	 * some nodes can be left in the pending list if there were
+	 * errors during processing the pending nodes.
+	 */
+	for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
+		list_for_each_entry(node, &cache->pending[level], list) {
+			BUG_ON(!node->pending);
+			if (node->bytenr == node->new_bytenr)
+				continue;
+			update_backref_node(cache, node, node->new_bytenr);
+		}
+	}
+
+	cache->last_trans = 0;
+	return 1;
+}
+
+static int should_ignore_root(struct btrfs_root *root)
+{
+	struct btrfs_root *reloc_root;
+
+	if (!root->ref_cows)
+		return 0;
+
+	reloc_root = root->reloc_root;
+	if (!reloc_root)
+		return 0;
+
+	if (btrfs_root_last_snapshot(&reloc_root->root_item) ==
+	    root->fs_info->running_transaction->transid - 1)
+		return 0;
+	/*
+	 * if there is reloc tree and it was created in previous
+	 * transaction backref lookup can find the reloc tree,
+	 * so backref node for the fs tree root is useless for
+	 * relocation.
+	 */
+	return 1;
+}
+
 /*
  * find reloc tree by address of tree root
  */
@@ -453,11 +645,12 @@
  * for all upper level blocks that directly/indirectly reference the
  * block are also cached.
  */
-static struct backref_node *build_backref_tree(struct reloc_control *rc,
-					       struct backref_cache *cache,
-					       struct btrfs_key *node_key,
-					       int level, u64 bytenr)
+static noinline_for_stack
+struct backref_node *build_backref_tree(struct reloc_control *rc,
+					struct btrfs_key *node_key,
+					int level, u64 bytenr)
 {
+	struct backref_cache *cache = &rc->backref_cache;
 	struct btrfs_path *path1;
 	struct btrfs_path *path2;
 	struct extent_buffer *eb;
@@ -473,6 +666,8 @@
 	unsigned long end;
 	unsigned long ptr;
 	LIST_HEAD(list);
+	LIST_HEAD(useless);
+	int cowonly;
 	int ret;
 	int err = 0;
 
@@ -483,15 +678,13 @@
 		goto out;
 	}
 
-	node = kmalloc(sizeof(*node), GFP_NOFS);
+	node = alloc_backref_node(cache);
 	if (!node) {
 		err = -ENOMEM;
 		goto out;
 	}
 
-	backref_node_init(node);
 	node->bytenr = bytenr;
-	node->owner = 0;
 	node->level = level;
 	node->lowest = 1;
 	cur = node;
@@ -587,17 +780,20 @@
 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 		if (key.type == BTRFS_SHARED_BLOCK_REF_KEY ||
 		    key.type == BTRFS_EXTENT_REF_V0_KEY) {
-			if (key.objectid == key.offset &&
-			    key.type == BTRFS_EXTENT_REF_V0_KEY) {
+			if (key.type == BTRFS_EXTENT_REF_V0_KEY) {
 				struct btrfs_extent_ref_v0 *ref0;
 				ref0 = btrfs_item_ptr(eb, path1->slots[0],
 						struct btrfs_extent_ref_v0);
 				root = find_tree_root(rc, eb, ref0);
-				if (root)
-					cur->root = root;
-				else
-					cur->old_root = 1;
-				break;
+				if (!root->ref_cows)
+					cur->cowonly = 1;
+				if (key.objectid == key.offset) {
+					if (root && !should_ignore_root(root))
+						cur->root = root;
+					else
+						list_add(&cur->list, &useless);
+					break;
+				}
 			}
 #else
 		BUG_ON(key.type == BTRFS_EXTENT_REF_V0_KEY);
@@ -614,22 +810,20 @@
 				break;
 			}
 
-			edge = kzalloc(sizeof(*edge), GFP_NOFS);
+			edge = alloc_backref_edge(cache);
 			if (!edge) {
 				err = -ENOMEM;
 				goto out;
 			}
 			rb_node = tree_search(&cache->rb_root, key.offset);
 			if (!rb_node) {
-				upper = kmalloc(sizeof(*upper), GFP_NOFS);
+				upper = alloc_backref_node(cache);
 				if (!upper) {
-					kfree(edge);
+					free_backref_edge(cache, edge);
 					err = -ENOMEM;
 					goto out;
 				}
-				backref_node_init(upper);
 				upper->bytenr = key.offset;
-				upper->owner = 0;
 				upper->level = cur->level + 1;
 				/*
 				 *  backrefs for the upper level block isn't
@@ -639,11 +833,12 @@
 			} else {
 				upper = rb_entry(rb_node, struct backref_node,
 						 rb_node);
+				BUG_ON(!upper->checked);
 				INIT_LIST_HEAD(&edge->list[UPPER]);
 			}
-			list_add(&edge->list[LOWER], &cur->upper);
-			edge->node[UPPER] = upper;
+			list_add_tail(&edge->list[LOWER], &cur->upper);
 			edge->node[LOWER] = cur;
+			edge->node[UPPER] = upper;
 
 			goto next;
 		} else if (key.type != BTRFS_TREE_BLOCK_REF_KEY) {
@@ -657,11 +852,17 @@
 			goto out;
 		}
 
+		if (!root->ref_cows)
+			cur->cowonly = 1;
+
 		if (btrfs_root_level(&root->root_item) == cur->level) {
 			/* tree root */
 			BUG_ON(btrfs_root_bytenr(&root->root_item) !=
 			       cur->bytenr);
-			cur->root = root;
+			if (should_ignore_root(root))
+				list_add(&cur->list, &useless);
+			else
+				cur->root = root;
 			break;
 		}
 
@@ -692,11 +893,14 @@
 			if (!path2->nodes[level]) {
 				BUG_ON(btrfs_root_bytenr(&root->root_item) !=
 				       lower->bytenr);
-				lower->root = root;
+				if (should_ignore_root(root))
+					list_add(&lower->list, &useless);
+				else
+					lower->root = root;
 				break;
 			}
 
-			edge = kzalloc(sizeof(*edge), GFP_NOFS);
+			edge = alloc_backref_edge(cache);
 			if (!edge) {
 				err = -ENOMEM;
 				goto out;
@@ -705,16 +909,17 @@
 			eb = path2->nodes[level];
 			rb_node = tree_search(&cache->rb_root, eb->start);
 			if (!rb_node) {
-				upper = kmalloc(sizeof(*upper), GFP_NOFS);
+				upper = alloc_backref_node(cache);
 				if (!upper) {
-					kfree(edge);
+					free_backref_edge(cache, edge);
 					err = -ENOMEM;
 					goto out;
 				}
-				backref_node_init(upper);
 				upper->bytenr = eb->start;
 				upper->owner = btrfs_header_owner(eb);
 				upper->level = lower->level + 1;
+				if (!root->ref_cows)
+					upper->cowonly = 1;
 
 				/*
 				 * if we know the block isn't shared
@@ -744,10 +949,12 @@
 						 rb_node);
 				BUG_ON(!upper->checked);
 				INIT_LIST_HEAD(&edge->list[UPPER]);
+				if (!upper->owner)
+					upper->owner = btrfs_header_owner(eb);
 			}
 			list_add_tail(&edge->list[LOWER], &lower->upper);
-			edge->node[UPPER] = upper;
 			edge->node[LOWER] = lower;
+			edge->node[UPPER] = upper;
 
 			if (rb_node)
 				break;
@@ -785,8 +992,13 @@
 	 * into the cache.
 	 */
 	BUG_ON(!node->checked);
-	rb_node = tree_insert(&cache->rb_root, node->bytenr, &node->rb_node);
-	BUG_ON(rb_node);
+	cowonly = node->cowonly;
+	if (!cowonly) {
+		rb_node = tree_insert(&cache->rb_root, node->bytenr,
+				      &node->rb_node);
+		BUG_ON(rb_node);
+		list_add_tail(&node->lower, &cache->leaves);
+	}
 
 	list_for_each_entry(edge, &node->upper, list[LOWER])
 		list_add_tail(&edge->list[UPPER], &list);
@@ -795,6 +1007,14 @@
 		edge = list_entry(list.next, struct backref_edge, list[UPPER]);
 		list_del_init(&edge->list[UPPER]);
 		upper = edge->node[UPPER];
+		if (upper->detached) {
+			list_del(&edge->list[LOWER]);
+			lower = edge->node[LOWER];
+			free_backref_edge(cache, edge);
+			if (list_empty(&lower->upper))
+				list_add(&lower->list, &useless);
+			continue;
+		}
 
 		if (!RB_EMPTY_NODE(&upper->rb_node)) {
 			if (upper->lowest) {
@@ -807,25 +1027,69 @@
 		}
 
 		BUG_ON(!upper->checked);
-		rb_node = tree_insert(&cache->rb_root, upper->bytenr,
-				      &upper->rb_node);
-		BUG_ON(rb_node);
+		BUG_ON(cowonly != upper->cowonly);
+		if (!cowonly) {
+			rb_node = tree_insert(&cache->rb_root, upper->bytenr,
+					      &upper->rb_node);
+			BUG_ON(rb_node);
+		}
 
 		list_add_tail(&edge->list[UPPER], &upper->lower);
 
 		list_for_each_entry(edge, &upper->upper, list[LOWER])
 			list_add_tail(&edge->list[UPPER], &list);
 	}
+	/*
+	 * process useless backref nodes. backref nodes for tree leaves
+	 * are deleted from the cache. backref nodes for upper level
+	 * tree blocks are left in the cache to avoid unnecessary backref
+	 * lookup.
+	 */
+	while (!list_empty(&useless)) {
+		upper = list_entry(useless.next, struct backref_node, list);
+		list_del_init(&upper->list);
+		BUG_ON(!list_empty(&upper->upper));
+		if (upper == node)
+			node = NULL;
+		if (upper->lowest) {
+			list_del_init(&upper->lower);
+			upper->lowest = 0;
+		}
+		while (!list_empty(&upper->lower)) {
+			edge = list_entry(upper->lower.next,
+					  struct backref_edge, list[UPPER]);
+			list_del(&edge->list[UPPER]);
+			list_del(&edge->list[LOWER]);
+			lower = edge->node[LOWER];
+			free_backref_edge(cache, edge);
+
+			if (list_empty(&lower->upper))
+				list_add(&lower->list, &useless);
+		}
+		__mark_block_processed(rc, upper);
+		if (upper->level > 0) {
+			list_add(&upper->list, &cache->detached);
+			upper->detached = 1;
+		} else {
+			rb_erase(&upper->rb_node, &cache->rb_root);
+			free_backref_node(cache, upper);
+		}
+	}
 out:
 	btrfs_free_path(path1);
 	btrfs_free_path(path2);
 	if (err) {
-		INIT_LIST_HEAD(&list);
+		while (!list_empty(&useless)) {
+			lower = list_entry(useless.next,
+					   struct backref_node, upper);
+			list_del_init(&lower->upper);
+		}
 		upper = node;
+		INIT_LIST_HEAD(&list);
 		while (upper) {
 			if (RB_EMPTY_NODE(&upper->rb_node)) {
 				list_splice_tail(&upper->upper, &list);
-				kfree(upper);
+				free_backref_node(cache, upper);
 			}
 
 			if (list_empty(&list))
@@ -833,15 +1097,104 @@
 
 			edge = list_entry(list.next, struct backref_edge,
 					  list[LOWER]);
+			list_del(&edge->list[LOWER]);
 			upper = edge->node[UPPER];
-			kfree(edge);
+			free_backref_edge(cache, edge);
 		}
 		return ERR_PTR(err);
 	}
+	BUG_ON(node && node->detached);
 	return node;
 }
 
 /*
+ * helper to add backref node for the newly created snapshot.
+ * the backref node is created by cloning backref node that
+ * corresponds to root of source tree
+ */
+static int clone_backref_node(struct btrfs_trans_handle *trans,
+			      struct reloc_control *rc,
+			      struct btrfs_root *src,
+			      struct btrfs_root *dest)
+{
+	struct btrfs_root *reloc_root = src->reloc_root;
+	struct backref_cache *cache = &rc->backref_cache;
+	struct backref_node *node = NULL;
+	struct backref_node *new_node;
+	struct backref_edge *edge;
+	struct backref_edge *new_edge;
+	struct rb_node *rb_node;
+
+	if (cache->last_trans > 0)
+		update_backref_cache(trans, cache);
+
+	rb_node = tree_search(&cache->rb_root, src->commit_root->start);
+	if (rb_node) {
+		node = rb_entry(rb_node, struct backref_node, rb_node);
+		if (node->detached)
+			node = NULL;
+		else
+			BUG_ON(node->new_bytenr != reloc_root->node->start);
+	}
+
+	if (!node) {
+		rb_node = tree_search(&cache->rb_root,
+				      reloc_root->commit_root->start);
+		if (rb_node) {
+			node = rb_entry(rb_node, struct backref_node,
+					rb_node);
+			BUG_ON(node->detached);
+		}
+	}
+
+	if (!node)
+		return 0;
+
+	new_node = alloc_backref_node(cache);
+	if (!new_node)
+		return -ENOMEM;
+
+	new_node->bytenr = dest->node->start;
+	new_node->level = node->level;
+	new_node->lowest = node->lowest;
+	new_node->root = dest;
+
+	if (!node->lowest) {
+		list_for_each_entry(edge, &node->lower, list[UPPER]) {
+			new_edge = alloc_backref_edge(cache);
+			if (!new_edge)
+				goto fail;
+
+			new_edge->node[UPPER] = new_node;
+			new_edge->node[LOWER] = edge->node[LOWER];
+			list_add_tail(&new_edge->list[UPPER],
+				      &new_node->lower);
+		}
+	}
+
+	rb_node = tree_insert(&cache->rb_root, new_node->bytenr,
+			      &new_node->rb_node);
+	BUG_ON(rb_node);
+
+	if (!new_node->lowest) {
+		list_for_each_entry(new_edge, &new_node->lower, list[UPPER]) {
+			list_add_tail(&new_edge->list[LOWER],
+				      &new_edge->node[LOWER]->upper);
+		}
+	}
+	return 0;
+fail:
+	while (!list_empty(&new_node->lower)) {
+		new_edge = list_entry(new_node->lower.next,
+				      struct backref_edge, list[UPPER]);
+		list_del(&new_edge->list[UPPER]);
+		free_backref_edge(cache, new_edge);
+	}
+	free_backref_node(cache, new_node);
+	return -ENOMEM;
+}
+
+/*
  * helper to add 'address of tree root -> reloc tree' mapping
  */
 static int __add_reloc_root(struct btrfs_root *root)
@@ -901,12 +1254,8 @@
 	return 0;
 }
 
-/*
- * create reloc tree for a given fs tree. reloc tree is just a
- * snapshot of the fs tree with special root objectid.
- */
-int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
-			  struct btrfs_root *root)
+static struct btrfs_root *create_reloc_root(struct btrfs_trans_handle *trans,
+					struct btrfs_root *root, u64 objectid)
 {
 	struct btrfs_root *reloc_root;
 	struct extent_buffer *eb;
@@ -914,36 +1263,45 @@
 	struct btrfs_key root_key;
 	int ret;
 
-	if (root->reloc_root) {
-		reloc_root = root->reloc_root;
-		reloc_root->last_trans = trans->transid;
-		return 0;
-	}
-
-	if (!root->fs_info->reloc_ctl ||
-	    !root->fs_info->reloc_ctl->create_reloc_root ||
-	    root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID)
-		return 0;
-
 	root_item = kmalloc(sizeof(*root_item), GFP_NOFS);
 	BUG_ON(!root_item);
 
 	root_key.objectid = BTRFS_TREE_RELOC_OBJECTID;
 	root_key.type = BTRFS_ROOT_ITEM_KEY;
-	root_key.offset = root->root_key.objectid;
+	root_key.offset = objectid;
 
-	ret = btrfs_copy_root(trans, root, root->commit_root, &eb,
-			      BTRFS_TREE_RELOC_OBJECTID);
-	BUG_ON(ret);
+	if (root->root_key.objectid == objectid) {
+		/* called by btrfs_init_reloc_root */
+		ret = btrfs_copy_root(trans, root, root->commit_root, &eb,
+				      BTRFS_TREE_RELOC_OBJECTID);
+		BUG_ON(ret);
 
-	btrfs_set_root_last_snapshot(&root->root_item, trans->transid - 1);
+		btrfs_set_root_last_snapshot(&root->root_item,
+					     trans->transid - 1);
+	} else {
+		/*
+		 * called by btrfs_reloc_post_snapshot_hook.
+		 * the source tree is a reloc tree, all tree blocks
+		 * modified after it was created have RELOC flag
+		 * set in their headers. so it's OK to not update
+		 * the 'last_snapshot'.
+		 */
+		ret = btrfs_copy_root(trans, root, root->node, &eb,
+				      BTRFS_TREE_RELOC_OBJECTID);
+		BUG_ON(ret);
+	}
+
 	memcpy(root_item, &root->root_item, sizeof(*root_item));
-	btrfs_set_root_refs(root_item, 1);
 	btrfs_set_root_bytenr(root_item, eb->start);
 	btrfs_set_root_level(root_item, btrfs_header_level(eb));
 	btrfs_set_root_generation(root_item, trans->transid);
-	memset(&root_item->drop_progress, 0, sizeof(struct btrfs_disk_key));
-	root_item->drop_level = 0;
+
+	if (root->root_key.objectid == objectid) {
+		btrfs_set_root_refs(root_item, 0);
+		memset(&root_item->drop_progress, 0,
+		       sizeof(struct btrfs_disk_key));
+		root_item->drop_level = 0;
+	}
 
 	btrfs_tree_unlock(eb);
 	free_extent_buffer(eb);
@@ -957,6 +1315,37 @@
 						 &root_key);
 	BUG_ON(IS_ERR(reloc_root));
 	reloc_root->last_trans = trans->transid;
+	return reloc_root;
+}
+
+/*
+ * create reloc tree for a given fs tree. reloc tree is just a
+ * snapshot of the fs tree with special root objectid.
+ */
+int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
+			  struct btrfs_root *root)
+{
+	struct btrfs_root *reloc_root;
+	struct reloc_control *rc = root->fs_info->reloc_ctl;
+	int clear_rsv = 0;
+
+	if (root->reloc_root) {
+		reloc_root = root->reloc_root;
+		reloc_root->last_trans = trans->transid;
+		return 0;
+	}
+
+	if (!rc || !rc->create_reloc_tree ||
+	    root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID)
+		return 0;
+
+	if (!trans->block_rsv) {
+		trans->block_rsv = rc->block_rsv;
+		clear_rsv = 1;
+	}
+	reloc_root = create_reloc_root(trans, root, root->root_key.objectid);
+	if (clear_rsv)
+		trans->block_rsv = NULL;
 
 	__add_reloc_root(reloc_root);
 	root->reloc_root = reloc_root;
@@ -980,7 +1369,8 @@
 	reloc_root = root->reloc_root;
 	root_item = &reloc_root->root_item;
 
-	if (btrfs_root_refs(root_item) == 0) {
+	if (root->fs_info->reloc_ctl->merge_reloc_tree &&
+	    btrfs_root_refs(root_item) == 0) {
 		root->reloc_root = NULL;
 		del = 1;
 	}
@@ -1102,8 +1492,7 @@
 		goto out;
 	}
 
-	if (new_bytenr)
-		*new_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
+	*new_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
 	ret = 0;
 out:
 	btrfs_free_path(path);
@@ -1114,19 +1503,18 @@
  * update file extent items in the tree leaf to point to
  * the new locations.
  */
-static int replace_file_extents(struct btrfs_trans_handle *trans,
-				struct reloc_control *rc,
-				struct btrfs_root *root,
-				struct extent_buffer *leaf,
-				struct list_head *inode_list)
+static noinline_for_stack
+int replace_file_extents(struct btrfs_trans_handle *trans,
+			 struct reloc_control *rc,
+			 struct btrfs_root *root,
+			 struct extent_buffer *leaf)
 {
 	struct btrfs_key key;
 	struct btrfs_file_extent_item *fi;
 	struct inode *inode = NULL;
-	struct inodevec *ivec = NULL;
 	u64 parent;
 	u64 bytenr;
-	u64 new_bytenr;
+	u64 new_bytenr = 0;
 	u64 num_bytes;
 	u64 end;
 	u32 nritems;
@@ -1166,21 +1554,12 @@
 		 * to complete and drop the extent cache
 		 */
 		if (root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID) {
-			if (!ivec || ivec->nr == INODEVEC_SIZE) {
-				ivec = kmalloc(sizeof(*ivec), GFP_NOFS);
-				BUG_ON(!ivec);
-				ivec->nr = 0;
-				list_add_tail(&ivec->list, inode_list);
-			}
 			if (first) {
 				inode = find_next_inode(root, key.objectid);
-				if (inode)
-					ivec->inode[ivec->nr++] = inode;
 				first = 0;
 			} else if (inode && inode->i_ino < key.objectid) {
+				btrfs_add_delayed_iput(inode);
 				inode = find_next_inode(root, key.objectid);
-				if (inode)
-					ivec->inode[ivec->nr++] = inode;
 			}
 			if (inode && inode->i_ino == key.objectid) {
 				end = key.offset +
@@ -1204,8 +1583,10 @@
 
 		ret = get_new_location(rc->data_inode, &new_bytenr,
 				       bytenr, num_bytes);
-		if (ret > 0)
+		if (ret > 0) {
+			WARN_ON(1);
 			continue;
+		}
 		BUG_ON(ret < 0);
 
 		btrfs_set_file_extent_disk_bytenr(leaf, fi, new_bytenr);
@@ -1225,6 +1606,8 @@
 	}
 	if (dirty)
 		btrfs_mark_buffer_dirty(leaf);
+	if (inode)
+		btrfs_add_delayed_iput(inode);
 	return 0;
 }
 
@@ -1248,11 +1631,11 @@
  * if no block got replaced, 0 is returned. if there are other
  * errors, a negative error number is returned.
  */
-static int replace_path(struct btrfs_trans_handle *trans,
-			struct btrfs_root *dest, struct btrfs_root *src,
-			struct btrfs_path *path, struct btrfs_key *next_key,
-			struct extent_buffer **leaf,
-			int lowest_level, int max_level)
+static noinline_for_stack
+int replace_path(struct btrfs_trans_handle *trans,
+		 struct btrfs_root *dest, struct btrfs_root *src,
+		 struct btrfs_path *path, struct btrfs_key *next_key,
+		 int lowest_level, int max_level)
 {
 	struct extent_buffer *eb;
 	struct extent_buffer *parent;
@@ -1263,16 +1646,16 @@
 	u64 new_ptr_gen;
 	u64 last_snapshot;
 	u32 blocksize;
+	int cow = 0;
 	int level;
 	int ret;
 	int slot;
 
 	BUG_ON(src->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID);
 	BUG_ON(dest->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID);
-	BUG_ON(lowest_level > 1 && leaf);
 
 	last_snapshot = btrfs_root_last_snapshot(&src->root_item);
-
+again:
 	slot = path->slots[lowest_level];
 	btrfs_node_key_to_cpu(path->nodes[lowest_level], &key, slot);
 
@@ -1286,8 +1669,10 @@
 		return 0;
 	}
 
-	ret = btrfs_cow_block(trans, dest, eb, NULL, 0, &eb);
-	BUG_ON(ret);
+	if (cow) {
+		ret = btrfs_cow_block(trans, dest, eb, NULL, 0, &eb);
+		BUG_ON(ret);
+	}
 	btrfs_set_lock_blocking(eb);
 
 	if (next_key) {
@@ -1331,7 +1716,7 @@
 
 		if (new_bytenr == 0 || old_ptr_gen > last_snapshot ||
 		    memcmp_node_keys(parent, slot, path, level)) {
-			if (level <= lowest_level && !leaf) {
+			if (level <= lowest_level) {
 				ret = 0;
 				break;
 			}
@@ -1339,16 +1724,12 @@
 			eb = read_tree_block(dest, old_bytenr, blocksize,
 					     old_ptr_gen);
 			btrfs_tree_lock(eb);
-			ret = btrfs_cow_block(trans, dest, eb, parent,
-					      slot, &eb);
-			BUG_ON(ret);
-			btrfs_set_lock_blocking(eb);
-
-			if (level <= lowest_level) {
-				*leaf = eb;
-				ret = 0;
-				break;
+			if (cow) {
+				ret = btrfs_cow_block(trans, dest, eb, parent,
+						      slot, &eb);
+				BUG_ON(ret);
 			}
+			btrfs_set_lock_blocking(eb);
 
 			btrfs_tree_unlock(parent);
 			free_extent_buffer(parent);
@@ -1357,6 +1738,13 @@
 			continue;
 		}
 
+		if (!cow) {
+			btrfs_tree_unlock(parent);
+			free_extent_buffer(parent);
+			cow = 1;
+			goto again;
+		}
+
 		btrfs_node_key_to_cpu(path->nodes[level], &key,
 				      path->slots[level]);
 		btrfs_release_path(src, path);
@@ -1562,20 +1950,6 @@
 	return 0;
 }
 
-static void put_inodes(struct list_head *list)
-{
-	struct inodevec *ivec;
-	while (!list_empty(list)) {
-		ivec = list_entry(list->next, struct inodevec, list);
-		list_del(&ivec->list);
-		while (ivec->nr > 0) {
-			ivec->nr--;
-			iput(ivec->inode[ivec->nr]);
-		}
-		kfree(ivec);
-	}
-}
-
 static int find_next_key(struct btrfs_path *path, int level,
 			 struct btrfs_key *key)
 
@@ -1608,13 +1982,14 @@
 	struct btrfs_root *reloc_root;
 	struct btrfs_root_item *root_item;
 	struct btrfs_path *path;
-	struct extent_buffer *leaf = NULL;
+	struct extent_buffer *leaf;
 	unsigned long nr;
 	int level;
 	int max_level;
 	int replaced = 0;
 	int ret;
 	int err = 0;
+	u32 min_reserved;
 
 	path = btrfs_alloc_path();
 	if (!path)
@@ -1648,34 +2023,23 @@
 		btrfs_unlock_up_safe(path, 0);
 	}
 
-	if (level == 0 && rc->stage == UPDATE_DATA_PTRS) {
-		trans = btrfs_start_transaction(root, 1);
-
-		leaf = path->nodes[0];
-		btrfs_item_key_to_cpu(leaf, &key, 0);
-		btrfs_release_path(reloc_root, path);
-
-		ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
-		if (ret < 0) {
-			err = ret;
-			goto out;
-		}
-
-		leaf = path->nodes[0];
-		btrfs_unlock_up_safe(path, 1);
-		ret = replace_file_extents(trans, rc, root, leaf,
-					   &inode_list);
-		if (ret < 0)
-			err = ret;
-		goto out;
-	}
-
+	min_reserved = root->nodesize * (BTRFS_MAX_LEVEL - 1) * 2;
 	memset(&next_key, 0, sizeof(next_key));
 
 	while (1) {
-		leaf = NULL;
+		trans = btrfs_start_transaction(root, 0);
+		trans->block_rsv = rc->block_rsv;
+
+		ret = btrfs_block_rsv_check(trans, root, rc->block_rsv,
+					    min_reserved, 0);
+		if (ret) {
+			BUG_ON(ret != -EAGAIN);
+			ret = btrfs_commit_transaction(trans, root);
+			BUG_ON(ret);
+			continue;
+		}
+
 		replaced = 0;
-		trans = btrfs_start_transaction(root, 1);
 		max_level = level;
 
 		ret = walk_down_reloc_tree(reloc_root, path, &level);
@@ -1689,14 +2053,9 @@
 		if (!find_next_key(path, level, &key) &&
 		    btrfs_comp_cpu_keys(&next_key, &key) >= 0) {
 			ret = 0;
-		} else if (level == 1 && rc->stage == UPDATE_DATA_PTRS) {
-			ret = replace_path(trans, root, reloc_root,
-					   path, &next_key, &leaf,
-					   level, max_level);
 		} else {
-			ret = replace_path(trans, root, reloc_root,
-					   path, &next_key, NULL,
-					   level, max_level);
+			ret = replace_path(trans, root, reloc_root, path,
+					   &next_key, level, max_level);
 		}
 		if (ret < 0) {
 			err = ret;
@@ -1708,16 +2067,6 @@
 			btrfs_node_key_to_cpu(path->nodes[level], &key,
 					      path->slots[level]);
 			replaced = 1;
-		} else if (leaf) {
-			/*
-			 * no block got replaced, try replacing file extents
-			 */
-			btrfs_item_key_to_cpu(leaf, &key, 0);
-			ret = replace_file_extents(trans, rc, root, leaf,
-						   &inode_list);
-			btrfs_tree_unlock(leaf);
-			free_extent_buffer(leaf);
-			BUG_ON(ret < 0);
 		}
 
 		ret = walk_up_reloc_tree(reloc_root, path, &level);
@@ -1734,15 +2083,10 @@
 		root_item->drop_level = level;
 
 		nr = trans->blocks_used;
-		btrfs_end_transaction(trans, root);
+		btrfs_end_transaction_throttle(trans, root);
 
 		btrfs_btree_balance_dirty(root, nr);
 
-		/*
-		 * put inodes outside transaction, otherwise we may deadlock.
-		 */
-		put_inodes(&inode_list);
-
 		if (replaced && rc->stage == UPDATE_DATA_PTRS)
 			invalidate_extent_cache(root, &key, &next_key);
 	}
@@ -1765,87 +2109,125 @@
 		       sizeof(root_item->drop_progress));
 		root_item->drop_level = 0;
 		btrfs_set_root_refs(root_item, 0);
+		btrfs_update_reloc_root(trans, root);
 	}
 
 	nr = trans->blocks_used;
-	btrfs_end_transaction(trans, root);
+	btrfs_end_transaction_throttle(trans, root);
 
 	btrfs_btree_balance_dirty(root, nr);
 
-	put_inodes(&inode_list);
-
 	if (replaced && rc->stage == UPDATE_DATA_PTRS)
 		invalidate_extent_cache(root, &key, &next_key);
 
 	return err;
 }
 
-/*
- * callback for the work threads.
- * this function merges reloc tree with corresponding fs tree,
- * and then drops the reloc tree.
- */
-static void merge_func(struct btrfs_work *work)
+static noinline_for_stack
+int prepare_to_merge(struct reloc_control *rc, int err)
 {
-	struct btrfs_trans_handle *trans;
-	struct btrfs_root *root;
+	struct btrfs_root *root = rc->extent_root;
 	struct btrfs_root *reloc_root;
-	struct async_merge *async;
+	struct btrfs_trans_handle *trans;
+	LIST_HEAD(reloc_roots);
+	u64 num_bytes = 0;
+	int ret;
+	int retries = 0;
 
-	async = container_of(work, struct async_merge, work);
-	reloc_root = async->root;
+	mutex_lock(&root->fs_info->trans_mutex);
+	rc->merging_rsv_size += root->nodesize * (BTRFS_MAX_LEVEL - 1) * 2;
+	rc->merging_rsv_size += rc->nodes_relocated * 2;
+	mutex_unlock(&root->fs_info->trans_mutex);
+again:
+	if (!err) {
+		num_bytes = rc->merging_rsv_size;
+		ret = btrfs_block_rsv_add(NULL, root, rc->block_rsv,
+					  num_bytes, &retries);
+		if (ret)
+			err = ret;
+	}
 
-	if (btrfs_root_refs(&reloc_root->root_item) > 0) {
+	trans = btrfs_join_transaction(rc->extent_root, 1);
+
+	if (!err) {
+		if (num_bytes != rc->merging_rsv_size) {
+			btrfs_end_transaction(trans, rc->extent_root);
+			btrfs_block_rsv_release(rc->extent_root,
+						rc->block_rsv, num_bytes);
+			retries = 0;
+			goto again;
+		}
+	}
+
+	rc->merge_reloc_tree = 1;
+
+	while (!list_empty(&rc->reloc_roots)) {
+		reloc_root = list_entry(rc->reloc_roots.next,
+					struct btrfs_root, root_list);
+		list_del_init(&reloc_root->root_list);
+
 		root = read_fs_root(reloc_root->fs_info,
 				    reloc_root->root_key.offset);
 		BUG_ON(IS_ERR(root));
 		BUG_ON(root->reloc_root != reloc_root);
 
-		merge_reloc_root(async->rc, root);
-
-		trans = btrfs_start_transaction(root, 1);
+		/*
+		 * set reference count to 1, so btrfs_recover_relocation
+		 * knows it should resumes merging
+		 */
+		if (!err)
+			btrfs_set_root_refs(&reloc_root->root_item, 1);
 		btrfs_update_reloc_root(trans, root);
-		btrfs_end_transaction(trans, root);
+
+		list_add(&reloc_root->root_list, &reloc_roots);
 	}
 
-	btrfs_drop_snapshot(reloc_root, 0);
+	list_splice(&reloc_roots, &rc->reloc_roots);
 
-	if (atomic_dec_and_test(async->num_pending))
-		complete(async->done);
-
-	kfree(async);
+	if (!err)
+		btrfs_commit_transaction(trans, rc->extent_root);
+	else
+		btrfs_end_transaction(trans, rc->extent_root);
+	return err;
 }
 
-static int merge_reloc_roots(struct reloc_control *rc)
+static noinline_for_stack
+int merge_reloc_roots(struct reloc_control *rc)
 {
-	struct async_merge *async;
 	struct btrfs_root *root;
-	struct completion done;
-	atomic_t num_pending;
+	struct btrfs_root *reloc_root;
+	LIST_HEAD(reloc_roots);
+	int found = 0;
+	int ret;
+again:
+	root = rc->extent_root;
+	mutex_lock(&root->fs_info->trans_mutex);
+	list_splice_init(&rc->reloc_roots, &reloc_roots);
+	mutex_unlock(&root->fs_info->trans_mutex);
 
-	init_completion(&done);
-	atomic_set(&num_pending, 1);
+	while (!list_empty(&reloc_roots)) {
+		found = 1;
+		reloc_root = list_entry(reloc_roots.next,
+					struct btrfs_root, root_list);
 
-	while (!list_empty(&rc->reloc_roots)) {
-		root = list_entry(rc->reloc_roots.next,
-				  struct btrfs_root, root_list);
-		list_del_init(&root->root_list);
+		if (btrfs_root_refs(&reloc_root->root_item) > 0) {
+			root = read_fs_root(reloc_root->fs_info,
+					    reloc_root->root_key.offset);
+			BUG_ON(IS_ERR(root));
+			BUG_ON(root->reloc_root != reloc_root);
 
-		async = kmalloc(sizeof(*async), GFP_NOFS);
-		BUG_ON(!async);
-		async->work.func = merge_func;
-		async->work.flags = 0;
-		async->rc = rc;
-		async->root = root;
-		async->done = &done;
-		async->num_pending = &num_pending;
-		atomic_inc(&num_pending);
-		btrfs_queue_worker(&rc->workers, &async->work);
+			ret = merge_reloc_root(rc, root);
+			BUG_ON(ret);
+		} else {
+			list_del_init(&reloc_root->root_list);
+		}
+		btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0);
 	}
 
-	if (!atomic_dec_and_test(&num_pending))
-		wait_for_completion(&done);
-
+	if (found) {
+		found = 0;
+		goto again;
+	}
 	BUG_ON(!RB_EMPTY_ROOT(&rc->reloc_root_tree.rb_root));
 	return 0;
 }
@@ -1876,119 +2258,169 @@
 	return btrfs_record_root_in_trans(trans, root);
 }
 
-/*
- * select one tree from trees that references the block.
- * for blocks in refernce counted trees, we preper reloc tree.
- * if no reloc tree found and reloc_only is true, NULL is returned.
- */
-static struct btrfs_root *__select_one_root(struct btrfs_trans_handle *trans,
-					    struct backref_node *node,
-					    struct backref_edge *edges[],
-					    int *nr, int reloc_only)
+static noinline_for_stack
+struct btrfs_root *select_reloc_root(struct btrfs_trans_handle *trans,
+				     struct reloc_control *rc,
+				     struct backref_node *node,
+				     struct backref_edge *edges[], int *nr)
 {
 	struct backref_node *next;
 	struct btrfs_root *root;
-	int index;
-	int loop = 0;
-again:
-	index = 0;
+	int index = 0;
+
 	next = node;
 	while (1) {
 		cond_resched();
 		next = walk_up_backref(next, edges, &index);
 		root = next->root;
-		if (!root) {
-			BUG_ON(!node->old_root);
-			goto skip;
-		}
-
-		/* no other choice for non-refernce counted tree */
-		if (!root->ref_cows) {
-			BUG_ON(reloc_only);
-			break;
-		}
+		BUG_ON(!root);
+		BUG_ON(!root->ref_cows);
 
 		if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
 			record_reloc_root_in_trans(trans, root);
 			break;
 		}
 
-		if (loop) {
-			btrfs_record_root_in_trans(trans, root);
+		btrfs_record_root_in_trans(trans, root);
+		root = root->reloc_root;
+
+		if (next->new_bytenr != root->node->start) {
+			BUG_ON(next->new_bytenr);
+			BUG_ON(!list_empty(&next->list));
+			next->new_bytenr = root->node->start;
+			next->root = root;
+			list_add_tail(&next->list,
+				      &rc->backref_cache.changed);
+			__mark_block_processed(rc, next);
 			break;
 		}
 
-		if (reloc_only || next != node) {
-			if (!root->reloc_root)
-				btrfs_record_root_in_trans(trans, root);
-			root = root->reloc_root;
-			/*
-			 * if the reloc tree was created in current
-			 * transation, there is no node in backref tree
-			 * corresponds to the root of the reloc tree.
-			 */
-			if (btrfs_root_last_snapshot(&root->root_item) ==
-			    trans->transid - 1)
-				break;
-		}
-skip:
+		WARN_ON(1);
 		root = NULL;
 		next = walk_down_backref(edges, &index);
 		if (!next || next->level <= node->level)
 			break;
 	}
+	if (!root)
+		return NULL;
 
-	if (!root && !loop && !reloc_only) {
-		loop = 1;
-		goto again;
+	*nr = index;
+	next = node;
+	/* setup backref node path for btrfs_reloc_cow_block */
+	while (1) {
+		rc->backref_cache.path[next->level] = next;
+		if (--index < 0)
+			break;
+		next = edges[index]->node[UPPER];
 	}
-
-	if (root)
-		*nr = index;
-	else
-		*nr = 0;
-
 	return root;
 }
 
+/*
+ * select a tree root for relocation. return NULL if the block
+ * is reference counted. we should use do_relocation() in this
+ * case. return a tree root pointer if the block isn't reference
+ * counted. return -ENOENT if the block is root of reloc tree.
+ */
 static noinline_for_stack
 struct btrfs_root *select_one_root(struct btrfs_trans_handle *trans,
 				   struct backref_node *node)
 {
+	struct backref_node *next;
+	struct btrfs_root *root;
+	struct btrfs_root *fs_root = NULL;
 	struct backref_edge *edges[BTRFS_MAX_LEVEL - 1];
-	int nr;
-	return __select_one_root(trans, node, edges, &nr, 0);
+	int index = 0;
+
+	next = node;
+	while (1) {
+		cond_resched();
+		next = walk_up_backref(next, edges, &index);
+		root = next->root;
+		BUG_ON(!root);
+
+		/* no other choice for non-refernce counted tree */
+		if (!root->ref_cows)
+			return root;
+
+		if (root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID)
+			fs_root = root;
+
+		if (next != node)
+			return NULL;
+
+		next = walk_down_backref(edges, &index);
+		if (!next || next->level <= node->level)
+			break;
+	}
+
+	if (!fs_root)
+		return ERR_PTR(-ENOENT);
+	return fs_root;
 }
 
 static noinline_for_stack
-struct btrfs_root *select_reloc_root(struct btrfs_trans_handle *trans,
-				     struct backref_node *node,
-				     struct backref_edge *edges[], int *nr)
+u64 calcu_metadata_size(struct reloc_control *rc,
+			struct backref_node *node, int reserve)
 {
-	return __select_one_root(trans, node, edges, nr, 1);
+	struct backref_node *next = node;
+	struct backref_edge *edge;
+	struct backref_edge *edges[BTRFS_MAX_LEVEL - 1];
+	u64 num_bytes = 0;
+	int index = 0;
+
+	BUG_ON(reserve && node->processed);
+
+	while (next) {
+		cond_resched();
+		while (1) {
+			if (next->processed && (reserve || next != node))
+				break;
+
+			num_bytes += btrfs_level_size(rc->extent_root,
+						      next->level);
+
+			if (list_empty(&next->upper))
+				break;
+
+			edge = list_entry(next->upper.next,
+					  struct backref_edge, list[LOWER]);
+			edges[index++] = edge;
+			next = edge->node[UPPER];
+		}
+		next = walk_down_backref(edges, &index);
+	}
+	return num_bytes;
 }
 
-static void grab_path_buffers(struct btrfs_path *path,
-			      struct backref_node *node,
-			      struct backref_edge *edges[], int nr)
+static int reserve_metadata_space(struct btrfs_trans_handle *trans,
+				  struct reloc_control *rc,
+				  struct backref_node *node)
 {
-	int i = 0;
-	while (1) {
-		drop_node_buffer(node);
-		node->eb = path->nodes[node->level];
-		BUG_ON(!node->eb);
-		if (path->locks[node->level])
-			node->locked = 1;
-		path->nodes[node->level] = NULL;
-		path->locks[node->level] = 0;
+	struct btrfs_root *root = rc->extent_root;
+	u64 num_bytes;
+	int ret;
 
-		if (i >= nr)
-			break;
+	num_bytes = calcu_metadata_size(rc, node, 1) * 2;
 
-		edges[i]->blockptr = node->eb->start;
-		node = edges[i]->node[UPPER];
-		i++;
+	trans->block_rsv = rc->block_rsv;
+	ret = btrfs_block_rsv_add(trans, root, rc->block_rsv, num_bytes,
+				  &rc->block_rsv_retries);
+	if (ret) {
+		if (ret == -EAGAIN)
+			rc->commit_transaction = 1;
+		return ret;
 	}
+
+	rc->block_rsv_retries = 0;
+	return 0;
+}
+
+static void release_metadata_space(struct reloc_control *rc,
+				   struct backref_node *node)
+{
+	u64 num_bytes = calcu_metadata_size(rc, node, 0) * 2;
+	btrfs_block_rsv_release(rc->extent_root, rc->block_rsv, num_bytes);
 }
 
 /*
@@ -1999,6 +2431,7 @@
  * in that case this function just updates pointers.
  */
 static int do_relocation(struct btrfs_trans_handle *trans,
+			 struct reloc_control *rc,
 			 struct backref_node *node,
 			 struct btrfs_key *key,
 			 struct btrfs_path *path, int lowest)
@@ -2019,18 +2452,25 @@
 	BUG_ON(lowest && node->eb);
 
 	path->lowest_level = node->level + 1;
+	rc->backref_cache.path[node->level] = node;
 	list_for_each_entry(edge, &node->upper, list[LOWER]) {
 		cond_resched();
-		if (node->eb && node->eb->start == edge->blockptr)
-			continue;
 
 		upper = edge->node[UPPER];
-		root = select_reloc_root(trans, upper, edges, &nr);
-		if (!root)
-			continue;
+		root = select_reloc_root(trans, rc, upper, edges, &nr);
+		BUG_ON(!root);
 
-		if (upper->eb && !upper->locked)
+		if (upper->eb && !upper->locked) {
+			if (!lowest) {
+				ret = btrfs_bin_search(upper->eb, key,
+						       upper->level, &slot);
+				BUG_ON(ret);
+				bytenr = btrfs_node_blockptr(upper->eb, slot);
+				if (node->eb->start == bytenr)
+					goto next;
+			}
 			drop_node_buffer(upper);
+		}
 
 		if (!upper->eb) {
 			ret = btrfs_search_slot(trans, root, key, path, 0, 1);
@@ -2040,11 +2480,17 @@
 			}
 			BUG_ON(ret > 0);
 
+			if (!upper->eb) {
+				upper->eb = path->nodes[upper->level];
+				path->nodes[upper->level] = NULL;
+			} else {
+				BUG_ON(upper->eb != path->nodes[upper->level]);
+			}
+
+			upper->locked = 1;
+			path->locks[upper->level] = 0;
+
 			slot = path->slots[upper->level];
-
-			btrfs_unlock_up_safe(path, upper->level + 1);
-			grab_path_buffers(path, upper, edges, nr);
-
 			btrfs_release_path(NULL, path);
 		} else {
 			ret = btrfs_bin_search(upper->eb, key, upper->level,
@@ -2053,14 +2499,11 @@
 		}
 
 		bytenr = btrfs_node_blockptr(upper->eb, slot);
-		if (!lowest) {
-			if (node->eb->start == bytenr) {
-				btrfs_tree_unlock(upper->eb);
-				upper->locked = 0;
-				continue;
-			}
+		if (lowest) {
+			BUG_ON(bytenr != node->bytenr);
 		} else {
-			BUG_ON(node->bytenr != bytenr);
+			if (node->eb->start == bytenr)
+				goto next;
 		}
 
 		blocksize = btrfs_level_size(root, node->level);
@@ -2072,13 +2515,13 @@
 		if (!node->eb) {
 			ret = btrfs_cow_block(trans, root, eb, upper->eb,
 					      slot, &eb);
+			btrfs_tree_unlock(eb);
+			free_extent_buffer(eb);
 			if (ret < 0) {
 				err = ret;
-				break;
+				goto next;
 			}
-			btrfs_set_lock_blocking(eb);
-			node->eb = eb;
-			node->locked = 1;
+			BUG_ON(node->eb != eb);
 		} else {
 			btrfs_set_node_blockptr(upper->eb, slot,
 						node->eb->start);
@@ -2096,67 +2539,80 @@
 			ret = btrfs_drop_subtree(trans, root, eb, upper->eb);
 			BUG_ON(ret);
 		}
-		if (!lowest) {
-			btrfs_tree_unlock(upper->eb);
-			upper->locked = 0;
-		}
+next:
+		if (!upper->pending)
+			drop_node_buffer(upper);
+		else
+			unlock_node_buffer(upper);
+		if (err)
+			break;
 	}
+
+	if (!err && node->pending) {
+		drop_node_buffer(node);
+		list_move_tail(&node->list, &rc->backref_cache.changed);
+		node->pending = 0;
+	}
+
 	path->lowest_level = 0;
+	BUG_ON(err == -ENOSPC);
 	return err;
 }
 
 static int link_to_upper(struct btrfs_trans_handle *trans,
+			 struct reloc_control *rc,
 			 struct backref_node *node,
 			 struct btrfs_path *path)
 {
 	struct btrfs_key key;
-	if (!node->eb || list_empty(&node->upper))
-		return 0;
 
 	btrfs_node_key_to_cpu(node->eb, &key, 0);
-	return do_relocation(trans, node, &key, path, 0);
+	return do_relocation(trans, rc, node, &key, path, 0);
 }
 
 static int finish_pending_nodes(struct btrfs_trans_handle *trans,
-				struct backref_cache *cache,
-				struct btrfs_path *path)
+				struct reloc_control *rc,
+				struct btrfs_path *path, int err)
 {
+	LIST_HEAD(list);
+	struct backref_cache *cache = &rc->backref_cache;
 	struct backref_node *node;
 	int level;
 	int ret;
-	int err = 0;
 
 	for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
 		while (!list_empty(&cache->pending[level])) {
 			node = list_entry(cache->pending[level].next,
-					  struct backref_node, lower);
-			BUG_ON(node->level != level);
+					  struct backref_node, list);
+			list_move_tail(&node->list, &list);
+			BUG_ON(!node->pending);
 
-			ret = link_to_upper(trans, node, path);
-			if (ret < 0)
-				err = ret;
-			/*
-			 * this remove the node from the pending list and
-			 * may add some other nodes to the level + 1
-			 * pending list
-			 */
-			remove_backref_node(cache, node);
+			if (!err) {
+				ret = link_to_upper(trans, rc, node, path);
+				if (ret < 0)
+					err = ret;
+			}
 		}
+		list_splice_init(&list, &cache->pending[level]);
 	}
-	BUG_ON(!RB_EMPTY_ROOT(&cache->rb_root));
 	return err;
 }
 
 static void mark_block_processed(struct reloc_control *rc,
-				 struct backref_node *node)
+				 u64 bytenr, u32 blocksize)
+{
+	set_extent_bits(&rc->processed_blocks, bytenr, bytenr + blocksize - 1,
+			EXTENT_DIRTY, GFP_NOFS);
+}
+
+static void __mark_block_processed(struct reloc_control *rc,
+				   struct backref_node *node)
 {
 	u32 blocksize;
 	if (node->level == 0 ||
 	    in_block_group(node->bytenr, rc->block_group)) {
 		blocksize = btrfs_level_size(rc->extent_root, node->level);
-		set_extent_bits(&rc->processed_blocks, node->bytenr,
-				node->bytenr + blocksize - 1, EXTENT_DIRTY,
-				GFP_NOFS);
+		mark_block_processed(rc, node->bytenr, blocksize);
 	}
 	node->processed = 1;
 }
@@ -2179,7 +2635,7 @@
 			if (next->processed)
 				break;
 
-			mark_block_processed(rc, next);
+			__mark_block_processed(rc, next);
 
 			if (list_empty(&next->upper))
 				break;
@@ -2202,138 +2658,6 @@
 	return 0;
 }
 
-/*
- * check if there are any file extent pointers in the leaf point to
- * data require processing
- */
-static int check_file_extents(struct reloc_control *rc,
-			      u64 bytenr, u32 blocksize, u64 ptr_gen)
-{
-	struct btrfs_key found_key;
-	struct btrfs_file_extent_item *fi;
-	struct extent_buffer *leaf;
-	u32 nritems;
-	int i;
-	int ret = 0;
-
-	leaf = read_tree_block(rc->extent_root, bytenr, blocksize, ptr_gen);
-
-	nritems = btrfs_header_nritems(leaf);
-	for (i = 0; i < nritems; i++) {
-		cond_resched();
-		btrfs_item_key_to_cpu(leaf, &found_key, i);
-		if (found_key.type != BTRFS_EXTENT_DATA_KEY)
-			continue;
-		fi = btrfs_item_ptr(leaf, i, struct btrfs_file_extent_item);
-		if (btrfs_file_extent_type(leaf, fi) ==
-		    BTRFS_FILE_EXTENT_INLINE)
-			continue;
-		bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
-		if (bytenr == 0)
-			continue;
-		if (in_block_group(bytenr, rc->block_group)) {
-			ret = 1;
-			break;
-		}
-	}
-	free_extent_buffer(leaf);
-	return ret;
-}
-
-/*
- * scan child blocks of a given block to find blocks require processing
- */
-static int add_child_blocks(struct btrfs_trans_handle *trans,
-			    struct reloc_control *rc,
-			    struct backref_node *node,
-			    struct rb_root *blocks)
-{
-	struct tree_block *block;
-	struct rb_node *rb_node;
-	u64 bytenr;
-	u64 ptr_gen;
-	u32 blocksize;
-	u32 nritems;
-	int i;
-	int err = 0;
-
-	nritems = btrfs_header_nritems(node->eb);
-	blocksize = btrfs_level_size(rc->extent_root, node->level - 1);
-	for (i = 0; i < nritems; i++) {
-		cond_resched();
-		bytenr = btrfs_node_blockptr(node->eb, i);
-		ptr_gen = btrfs_node_ptr_generation(node->eb, i);
-		if (ptr_gen == trans->transid)
-			continue;
-		if (!in_block_group(bytenr, rc->block_group) &&
-		    (node->level > 1 || rc->stage == MOVE_DATA_EXTENTS))
-			continue;
-		if (tree_block_processed(bytenr, blocksize, rc))
-			continue;
-
-		readahead_tree_block(rc->extent_root,
-				     bytenr, blocksize, ptr_gen);
-	}
-
-	for (i = 0; i < nritems; i++) {
-		cond_resched();
-		bytenr = btrfs_node_blockptr(node->eb, i);
-		ptr_gen = btrfs_node_ptr_generation(node->eb, i);
-		if (ptr_gen == trans->transid)
-			continue;
-		if (!in_block_group(bytenr, rc->block_group) &&
-		    (node->level > 1 || rc->stage == MOVE_DATA_EXTENTS))
-			continue;
-		if (tree_block_processed(bytenr, blocksize, rc))
-			continue;
-		if (!in_block_group(bytenr, rc->block_group) &&
-		    !check_file_extents(rc, bytenr, blocksize, ptr_gen))
-			continue;
-
-		block = kmalloc(sizeof(*block), GFP_NOFS);
-		if (!block) {
-			err = -ENOMEM;
-			break;
-		}
-		block->bytenr = bytenr;
-		btrfs_node_key_to_cpu(node->eb, &block->key, i);
-		block->level = node->level - 1;
-		block->key_ready = 1;
-		rb_node = tree_insert(blocks, block->bytenr, &block->rb_node);
-		BUG_ON(rb_node);
-	}
-	if (err)
-		free_block_list(blocks);
-	return err;
-}
-
-/*
- * find adjacent blocks require processing
- */
-static noinline_for_stack
-int add_adjacent_blocks(struct btrfs_trans_handle *trans,
-			struct reloc_control *rc,
-			struct backref_cache *cache,
-			struct rb_root *blocks, int level,
-			struct backref_node **upper)
-{
-	struct backref_node *node;
-	int ret = 0;
-
-	WARN_ON(!list_empty(&cache->pending[level]));
-
-	if (list_empty(&cache->pending[level + 1]))
-		return 1;
-
-	node = list_entry(cache->pending[level + 1].next,
-			  struct backref_node, lower);
-	if (node->eb)
-		ret = add_child_blocks(trans, rc, node, blocks);
-
-	*upper = node;
-	return ret;
-}
-
 static int get_tree_block_key(struct reloc_control *rc,
 			      struct tree_block *block)
 {
@@ -2371,40 +2695,53 @@
 				struct btrfs_path *path)
 {
 	struct btrfs_root *root;
-	int ret;
+	int release = 0;
+	int ret = 0;
 
-	root = select_one_root(trans, node);
-	if (unlikely(!root)) {
-		rc->found_old_snapshot = 1;
-		update_processed_blocks(rc, node);
+	if (!node)
 		return 0;
+
+	BUG_ON(node->processed);
+	root = select_one_root(trans, node);
+	if (root == ERR_PTR(-ENOENT)) {
+		update_processed_blocks(rc, node);
+		goto out;
 	}
 
-	if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
-		ret = do_relocation(trans, node, key, path, 1);
-		if (ret < 0)
+	if (!root || root->ref_cows) {
+		ret = reserve_metadata_space(trans, rc, node);
+		if (ret)
 			goto out;
-		if (node->level == 0 && rc->stage == UPDATE_DATA_PTRS) {
-			ret = replace_file_extents(trans, rc, root,
-						   node->eb, NULL);
-			if (ret < 0)
-				goto out;
+		release = 1;
+	}
+
+	if (root) {
+		if (root->ref_cows) {
+			BUG_ON(node->new_bytenr);
+			BUG_ON(!list_empty(&node->list));
+			btrfs_record_root_in_trans(trans, root);
+			root = root->reloc_root;
+			node->new_bytenr = root->node->start;
+			node->root = root;
+			list_add_tail(&node->list, &rc->backref_cache.changed);
+		} else {
+			path->lowest_level = node->level;
+			ret = btrfs_search_slot(trans, root, key, path, 0, 1);
+			btrfs_release_path(root, path);
+			if (ret > 0)
+				ret = 0;
 		}
-		drop_node_buffer(node);
-	} else if (!root->ref_cows) {
-		path->lowest_level = node->level;
-		ret = btrfs_search_slot(trans, root, key, path, 0, 1);
-		btrfs_release_path(root, path);
-		if (ret < 0)
-			goto out;
-	} else if (root != node->root) {
-		WARN_ON(node->level > 0 || rc->stage != UPDATE_DATA_PTRS);
+		if (!ret)
+			update_processed_blocks(rc, node);
+	} else {
+		ret = do_relocation(trans, rc, node, key, path, 1);
 	}
-
-	update_processed_blocks(rc, node);
-	ret = 0;
 out:
-	drop_node_buffer(node);
+	if (ret || node->level == 0 || node->cowonly) {
+		if (release)
+			release_metadata_space(rc, node);
+		remove_backref_node(&rc->backref_cache, node);
+	}
 	return ret;
 }
 
@@ -2415,12 +2752,10 @@
 int relocate_tree_blocks(struct btrfs_trans_handle *trans,
 			 struct reloc_control *rc, struct rb_root *blocks)
 {
-	struct backref_cache *cache;
 	struct backref_node *node;
 	struct btrfs_path *path;
 	struct tree_block *block;
 	struct rb_node *rb_node;
-	int level = -1;
 	int ret;
 	int err = 0;
 
@@ -2428,21 +2763,9 @@
 	if (!path)
 		return -ENOMEM;
 
-	cache = kmalloc(sizeof(*cache), GFP_NOFS);
-	if (!cache) {
-		btrfs_free_path(path);
-		return -ENOMEM;
-	}
-
-	backref_cache_init(cache);
-
 	rb_node = rb_first(blocks);
 	while (rb_node) {
 		block = rb_entry(rb_node, struct tree_block, rb_node);
-		if (level == -1)
-			level = block->level;
-		else
-			BUG_ON(level != block->level);
 		if (!block->key_ready)
 			reada_tree_block(rc, block);
 		rb_node = rb_next(rb_node);
@@ -2460,7 +2783,7 @@
 	while (rb_node) {
 		block = rb_entry(rb_node, struct tree_block, rb_node);
 
-		node = build_backref_tree(rc, cache, &block->key,
+		node = build_backref_tree(rc, &block->key,
 					  block->level, block->bytenr);
 		if (IS_ERR(node)) {
 			err = PTR_ERR(node);
@@ -2470,82 +2793,65 @@
 		ret = relocate_tree_block(trans, rc, node, &block->key,
 					  path);
 		if (ret < 0) {
-			err = ret;
+			if (ret != -EAGAIN || rb_node == rb_first(blocks))
+				err = ret;
 			goto out;
 		}
-		remove_backref_node(cache, node);
 		rb_node = rb_next(rb_node);
 	}
-
-	if (level > 0)
-		goto out;
-
-	free_block_list(blocks);
-
-	/*
-	 * now backrefs of some upper level tree blocks have been cached,
-	 * try relocating blocks referenced by these upper level blocks.
-	 */
-	while (1) {
-		struct backref_node *upper = NULL;
-		if (trans->transaction->in_commit ||
-		    trans->transaction->delayed_refs.flushing)
-			break;
-
-		ret = add_adjacent_blocks(trans, rc, cache, blocks, level,
-					  &upper);
-		if (ret < 0)
-			err = ret;
-		if (ret != 0)
-			break;
-
-		rb_node = rb_first(blocks);
-		while (rb_node) {
-			block = rb_entry(rb_node, struct tree_block, rb_node);
-			if (trans->transaction->in_commit ||
-			    trans->transaction->delayed_refs.flushing)
-				goto out;
-			BUG_ON(!block->key_ready);
-			node = build_backref_tree(rc, cache, &block->key,
-						  level, block->bytenr);
-			if (IS_ERR(node)) {
-				err = PTR_ERR(node);
-				goto out;
-			}
-
-			ret = relocate_tree_block(trans, rc, node,
-						  &block->key, path);
-			if (ret < 0) {
-				err = ret;
-				goto out;
-			}
-			remove_backref_node(cache, node);
-			rb_node = rb_next(rb_node);
-		}
-		free_block_list(blocks);
-
-		if (upper) {
-			ret = link_to_upper(trans, upper, path);
-			if (ret < 0) {
-				err = ret;
-				break;
-			}
-			remove_backref_node(cache, upper);
-		}
-	}
 out:
 	free_block_list(blocks);
+	err = finish_pending_nodes(trans, rc, path, err);
 
-	ret = finish_pending_nodes(trans, cache, path);
-	if (ret < 0)
-		err = ret;
-
-	kfree(cache);
 	btrfs_free_path(path);
 	return err;
 }
 
 static noinline_for_stack
+int prealloc_file_extent_cluster(struct inode *inode,
+				 struct file_extent_cluster *cluster)
+{
+	u64 alloc_hint = 0;
+	u64 start;
+	u64 end;
+	u64 offset = BTRFS_I(inode)->index_cnt;
+	u64 num_bytes;
+	int nr = 0;
+	int ret = 0;
+
+	BUG_ON(cluster->start != cluster->boundary[0]);
+	mutex_lock(&inode->i_mutex);
+
+	ret = btrfs_check_data_free_space(inode, cluster->end +
+					  1 - cluster->start);
+	if (ret)
+		goto out;
+
+	while (nr < cluster->nr) {
+		start = cluster->boundary[nr] - offset;
+		if (nr + 1 < cluster->nr)
+			end = cluster->boundary[nr + 1] - 1 - offset;
+		else
+			end = cluster->end - offset;
+
+		lock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
+		num_bytes = end + 1 - start;
+		ret = btrfs_prealloc_file_range(inode, 0, start,
+						num_bytes, num_bytes,
+						end + 1, &alloc_hint);
+		unlock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
+		if (ret)
+			break;
+		nr++;
+	}
+	btrfs_free_reserved_data_space(inode, cluster->end +
+				       1 - cluster->start);
+out:
+	mutex_unlock(&inode->i_mutex);
+	return ret;
+}
+
+static noinline_for_stack
 int setup_extent_mapping(struct inode *inode, u64 start, u64 end,
 			 u64 block_start)
 {
@@ -2588,7 +2894,6 @@
 	u64 offset = BTRFS_I(inode)->index_cnt;
 	unsigned long index;
 	unsigned long last_index;
-	unsigned int dirty_page = 0;
 	struct page *page;
 	struct file_ra_state *ra;
 	int nr = 0;
@@ -2601,21 +2906,24 @@
 	if (!ra)
 		return -ENOMEM;
 
-	index = (cluster->start - offset) >> PAGE_CACHE_SHIFT;
-	last_index = (cluster->end - offset) >> PAGE_CACHE_SHIFT;
-
-	mutex_lock(&inode->i_mutex);
-
-	i_size_write(inode, cluster->end + 1 - offset);
-	ret = setup_extent_mapping(inode, cluster->start - offset,
-				   cluster->end - offset, cluster->start);
+	ret = prealloc_file_extent_cluster(inode, cluster);
 	if (ret)
-		goto out_unlock;
+		goto out;
 
 	file_ra_state_init(ra, inode->i_mapping);
 
-	WARN_ON(cluster->start != cluster->boundary[0]);
+	ret = setup_extent_mapping(inode, cluster->start - offset,
+				   cluster->end - offset, cluster->start);
+	if (ret)
+		goto out;
+
+	index = (cluster->start - offset) >> PAGE_CACHE_SHIFT;
+	last_index = (cluster->end - offset) >> PAGE_CACHE_SHIFT;
 	while (index <= last_index) {
+		ret = btrfs_delalloc_reserve_metadata(inode, PAGE_CACHE_SIZE);
+		if (ret)
+			goto out;
+
 		page = find_lock_page(inode->i_mapping, index);
 		if (!page) {
 			page_cache_sync_readahead(inode->i_mapping,
@@ -2623,8 +2931,10 @@
 						  last_index + 1 - index);
 			page = grab_cache_page(inode->i_mapping, index);
 			if (!page) {
+				btrfs_delalloc_release_metadata(inode,
+							PAGE_CACHE_SIZE);
 				ret = -ENOMEM;
-				goto out_unlock;
+				goto out;
 			}
 		}
 
@@ -2640,8 +2950,10 @@
 			if (!PageUptodate(page)) {
 				unlock_page(page);
 				page_cache_release(page);
+				btrfs_delalloc_release_metadata(inode,
+							PAGE_CACHE_SIZE);
 				ret = -EIO;
-				goto out_unlock;
+				goto out;
 			}
 		}
 
@@ -2660,10 +2972,9 @@
 					EXTENT_BOUNDARY, GFP_NOFS);
 			nr++;
 		}
-		btrfs_set_extent_delalloc(inode, page_start, page_end, NULL);
 
+		btrfs_set_extent_delalloc(inode, page_start, page_end, NULL);
 		set_page_dirty(page);
-		dirty_page++;
 
 		unlock_extent(&BTRFS_I(inode)->io_tree,
 			      page_start, page_end, GFP_NOFS);
@@ -2671,20 +2982,11 @@
 		page_cache_release(page);
 
 		index++;
-		if (nr < cluster->nr &&
-		    page_end + 1 + offset == cluster->boundary[nr]) {
-			balance_dirty_pages_ratelimited_nr(inode->i_mapping,
-							   dirty_page);
-			dirty_page = 0;
-		}
-	}
-	if (dirty_page) {
-		balance_dirty_pages_ratelimited_nr(inode->i_mapping,
-						   dirty_page);
+		balance_dirty_pages_ratelimited(inode->i_mapping);
+		btrfs_throttle(BTRFS_I(inode)->root);
 	}
 	WARN_ON(nr != cluster->nr);
-out_unlock:
-	mutex_unlock(&inode->i_mutex);
+out:
 	kfree(ra);
 	return ret;
 }
@@ -2870,9 +3172,6 @@
 static int block_use_full_backref(struct reloc_control *rc,
 				  struct extent_buffer *eb)
 {
-	struct btrfs_path *path;
-	struct btrfs_extent_item *ei;
-	struct btrfs_key key;
 	u64 flags;
 	int ret;
 
@@ -2880,28 +3179,14 @@
 	    btrfs_header_backref_rev(eb) < BTRFS_MIXED_BACKREF_REV)
 		return 1;
 
-	path = btrfs_alloc_path();
-	BUG_ON(!path);
-
-	key.objectid = eb->start;
-	key.type = BTRFS_EXTENT_ITEM_KEY;
-	key.offset = eb->len;
-
-	path->search_commit_root = 1;
-	path->skip_locking = 1;
-	ret = btrfs_search_slot(NULL, rc->extent_root,
-				&key, path, 0, 0);
+	ret = btrfs_lookup_extent_info(NULL, rc->extent_root,
+				       eb->start, eb->len, NULL, &flags);
 	BUG_ON(ret);
 
-	ei = btrfs_item_ptr(path->nodes[0], path->slots[0],
-			    struct btrfs_extent_item);
-	flags = btrfs_extent_flags(path->nodes[0], ei);
-	BUG_ON(!(flags & BTRFS_EXTENT_FLAG_TREE_BLOCK));
 	if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF)
 		ret = 1;
 	else
 		ret = 0;
-	btrfs_free_path(path);
 	return ret;
 }
 
@@ -3074,22 +3359,10 @@
 	struct btrfs_extent_inline_ref *iref;
 	unsigned long ptr;
 	unsigned long end;
-	u32 blocksize;
+	u32 blocksize = btrfs_level_size(rc->extent_root, 0);
 	int ret;
 	int err = 0;
 
-	ret = get_new_location(rc->data_inode, NULL, extent_key->objectid,
-			       extent_key->offset);
-	BUG_ON(ret < 0);
-	if (ret > 0) {
-		/* the relocated data is fragmented */
-		rc->extents_skipped++;
-		btrfs_release_path(rc->extent_root, path);
-		return 0;
-	}
-
-	blocksize = btrfs_level_size(rc->extent_root, 0);
-
 	eb = path->nodes[0];
 	ptr = btrfs_item_ptr_offset(eb, path->slots[0]);
 	end = ptr + btrfs_item_size_nr(eb, path->slots[0]);
@@ -3170,7 +3443,8 @@
  */
 static noinline_for_stack
 int find_next_extent(struct btrfs_trans_handle *trans,
-		     struct reloc_control *rc, struct btrfs_path *path)
+		     struct reloc_control *rc, struct btrfs_path *path,
+		     struct btrfs_key *extent_key)
 {
 	struct btrfs_key key;
 	struct extent_buffer *leaf;
@@ -3225,6 +3499,7 @@
 			rc->search_start = end + 1;
 		} else {
 			rc->search_start = key.objectid + key.offset;
+			memcpy(extent_key, &key, sizeof(key));
 			return 0;
 		}
 	}
@@ -3262,12 +3537,49 @@
 	return 0;
 }
 
+static noinline_for_stack
+int prepare_to_relocate(struct reloc_control *rc)
+{
+	struct btrfs_trans_handle *trans;
+	int ret;
+
+	rc->block_rsv = btrfs_alloc_block_rsv(rc->extent_root);
+	if (!rc->block_rsv)
+		return -ENOMEM;
+
+	/*
+	 * reserve some space for creating reloc trees.
+	 * btrfs_init_reloc_root will use them when there
+	 * is no reservation in transaction handle.
+	 */
+	ret = btrfs_block_rsv_add(NULL, rc->extent_root, rc->block_rsv,
+				  rc->extent_root->nodesize * 256,
+				  &rc->block_rsv_retries);
+	if (ret)
+		return ret;
+
+	rc->block_rsv->refill_used = 1;
+	btrfs_add_durable_block_rsv(rc->extent_root->fs_info, rc->block_rsv);
+
+	memset(&rc->cluster, 0, sizeof(rc->cluster));
+	rc->search_start = rc->block_group->key.objectid;
+	rc->extents_found = 0;
+	rc->nodes_relocated = 0;
+	rc->merging_rsv_size = 0;
+	rc->block_rsv_retries = 0;
+
+	rc->create_reloc_tree = 1;
+	set_reloc_control(rc);
+
+	trans = btrfs_join_transaction(rc->extent_root, 1);
+	btrfs_commit_transaction(trans, rc->extent_root);
+	return 0;
+}
 
 static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
 {
 	struct rb_root blocks = RB_ROOT;
 	struct btrfs_key key;
-	struct file_extent_cluster *cluster;
 	struct btrfs_trans_handle *trans = NULL;
 	struct btrfs_path *path;
 	struct btrfs_extent_item *ei;
@@ -3277,33 +3589,25 @@
 	int ret;
 	int err = 0;
 
-	cluster = kzalloc(sizeof(*cluster), GFP_NOFS);
-	if (!cluster)
+	path = btrfs_alloc_path();
+	if (!path)
 		return -ENOMEM;
 
-	path = btrfs_alloc_path();
-	if (!path) {
-		kfree(cluster);
-		return -ENOMEM;
+	ret = prepare_to_relocate(rc);
+	if (ret) {
+		err = ret;
+		goto out_free;
 	}
 
-	rc->extents_found = 0;
-	rc->extents_skipped = 0;
-
-	rc->search_start = rc->block_group->key.objectid;
-	clear_extent_bits(&rc->processed_blocks, 0, (u64)-1, EXTENT_DIRTY,
-			  GFP_NOFS);
-
-	rc->create_reloc_root = 1;
-	set_reloc_control(rc);
-
-	trans = btrfs_start_transaction(rc->extent_root, 1);
-	btrfs_commit_transaction(trans, rc->extent_root);
-
 	while (1) {
-		trans = btrfs_start_transaction(rc->extent_root, 1);
+		trans = btrfs_start_transaction(rc->extent_root, 0);
 
-		ret = find_next_extent(trans, rc, path);
+		if (update_backref_cache(trans, &rc->backref_cache)) {
+			btrfs_end_transaction(trans, rc->extent_root);
+			continue;
+		}
+
+		ret = find_next_extent(trans, rc, path, &key);
 		if (ret < 0)
 			err = ret;
 		if (ret != 0)
@@ -3313,9 +3617,7 @@
 
 		ei = btrfs_item_ptr(path->nodes[0], path->slots[0],
 				    struct btrfs_extent_item);
-		btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
-		item_size = btrfs_item_size_nr(path->nodes[0],
-					       path->slots[0]);
+		item_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
 		if (item_size >= sizeof(*ei)) {
 			flags = btrfs_extent_flags(path->nodes[0], ei);
 			ret = check_extent_flags(flags);
@@ -3356,73 +3658,100 @@
 		if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 			ret = add_tree_block(rc, &key, path, &blocks);
 		} else if (rc->stage == UPDATE_DATA_PTRS &&
-			 (flags & BTRFS_EXTENT_FLAG_DATA)) {
+			   (flags & BTRFS_EXTENT_FLAG_DATA)) {
 			ret = add_data_references(rc, &key, path, &blocks);
 		} else {
 			btrfs_release_path(rc->extent_root, path);
 			ret = 0;
 		}
 		if (ret < 0) {
-			err = 0;
+			err = ret;
 			break;
 		}
 
 		if (!RB_EMPTY_ROOT(&blocks)) {
 			ret = relocate_tree_blocks(trans, rc, &blocks);
 			if (ret < 0) {
-				err = ret;
-				break;
+				if (ret != -EAGAIN) {
+					err = ret;
+					break;
+				}
+				rc->extents_found--;
+				rc->search_start = key.objectid;
 			}
 		}
 
-		nr = trans->blocks_used;
-		btrfs_end_transaction(trans, rc->extent_root);
+		ret = btrfs_block_rsv_check(trans, rc->extent_root,
+					    rc->block_rsv, 0, 5);
+		if (ret < 0) {
+			if (ret != -EAGAIN) {
+				err = ret;
+				WARN_ON(1);
+				break;
+			}
+			rc->commit_transaction = 1;
+		}
+
+		if (rc->commit_transaction) {
+			rc->commit_transaction = 0;
+			ret = btrfs_commit_transaction(trans, rc->extent_root);
+			BUG_ON(ret);
+		} else {
+			nr = trans->blocks_used;
+			btrfs_end_transaction_throttle(trans, rc->extent_root);
+			btrfs_btree_balance_dirty(rc->extent_root, nr);
+		}
 		trans = NULL;
-		btrfs_btree_balance_dirty(rc->extent_root, nr);
 
 		if (rc->stage == MOVE_DATA_EXTENTS &&
 		    (flags & BTRFS_EXTENT_FLAG_DATA)) {
 			rc->found_file_extent = 1;
 			ret = relocate_data_extent(rc->data_inode,
-						   &key, cluster);
+						   &key, &rc->cluster);
 			if (ret < 0) {
 				err = ret;
 				break;
 			}
 		}
 	}
-	btrfs_free_path(path);
+
+	btrfs_release_path(rc->extent_root, path);
+	clear_extent_bits(&rc->processed_blocks, 0, (u64)-1, EXTENT_DIRTY,
+			  GFP_NOFS);
 
 	if (trans) {
 		nr = trans->blocks_used;
-		btrfs_end_transaction(trans, rc->extent_root);
+		btrfs_end_transaction_throttle(trans, rc->extent_root);
 		btrfs_btree_balance_dirty(rc->extent_root, nr);
 	}
 
 	if (!err) {
-		ret = relocate_file_extent_cluster(rc->data_inode, cluster);
+		ret = relocate_file_extent_cluster(rc->data_inode,
+						   &rc->cluster);
 		if (ret < 0)
 			err = ret;
 	}
 
-	kfree(cluster);
+	rc->create_reloc_tree = 0;
+	set_reloc_control(rc);
 
-	rc->create_reloc_root = 0;
-	smp_mb();
+	backref_cache_cleanup(&rc->backref_cache);
+	btrfs_block_rsv_release(rc->extent_root, rc->block_rsv, (u64)-1);
 
-	if (rc->extents_found > 0) {
-		trans = btrfs_start_transaction(rc->extent_root, 1);
-		btrfs_commit_transaction(trans, rc->extent_root);
-	}
+	err = prepare_to_merge(rc, err);
 
 	merge_reloc_roots(rc);
 
+	rc->merge_reloc_tree = 0;
 	unset_reloc_control(rc);
+	btrfs_block_rsv_release(rc->extent_root, rc->block_rsv, (u64)-1);
 
 	/* get rid of pinned extents */
-	trans = btrfs_start_transaction(rc->extent_root, 1);
+	trans = btrfs_join_transaction(rc->extent_root, 1);
 	btrfs_commit_transaction(trans, rc->extent_root);
-
+out_free:
+	btrfs_free_block_rsv(rc->extent_root, rc->block_rsv);
+	btrfs_free_path(path);
 	return err;
 }
 
@@ -3448,7 +3777,8 @@
 	btrfs_set_inode_generation(leaf, item, 1);
 	btrfs_set_inode_size(leaf, item, 0);
 	btrfs_set_inode_mode(leaf, item, S_IFREG | 0600);
-	btrfs_set_inode_flags(leaf, item, BTRFS_INODE_NOCOMPRESS);
+	btrfs_set_inode_flags(leaf, item, BTRFS_INODE_NOCOMPRESS |
+					  BTRFS_INODE_PREALLOC);
 	btrfs_mark_buffer_dirty(leaf);
 	btrfs_release_path(root, path);
 out:
@@ -3460,8 +3790,9 @@
  * helper to create inode for data relocation.
  * the inode is in data relocation tree and its link count is 0
  */
-static struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
-					struct btrfs_block_group_cache *group)
+static noinline_for_stack
+struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
+				 struct btrfs_block_group_cache *group)
 {
 	struct inode *inode = NULL;
 	struct btrfs_trans_handle *trans;
@@ -3475,8 +3806,9 @@
 	if (IS_ERR(root))
 		return ERR_CAST(root);
 
-	trans = btrfs_start_transaction(root, 1);
-	BUG_ON(!trans);
+	trans = btrfs_start_transaction(root, 6);
+	if (IS_ERR(trans))
+		return ERR_CAST(trans);
 
 	err = btrfs_find_free_objectid(trans, root, objectid, &objectid);
 	if (err)
@@ -3496,7 +3828,6 @@
 out:
 	nr = trans->blocks_used;
 	btrfs_end_transaction(trans, root);
-
 	btrfs_btree_balance_dirty(root, nr);
 	if (err) {
 		if (inode)
@@ -3506,6 +3837,21 @@
 	return inode;
 }
 
+static struct reloc_control *alloc_reloc_control(void)
+{
+	struct reloc_control *rc;
+
+	rc = kzalloc(sizeof(*rc), GFP_NOFS);
+	if (!rc)
+		return NULL;
+
+	INIT_LIST_HEAD(&rc->reloc_roots);
+	backref_cache_init(&rc->backref_cache);
+	mapping_tree_init(&rc->reloc_root_tree);
+	extent_io_tree_init(&rc->processed_blocks, NULL, GFP_NOFS);
+	return rc;
+}
+
 /*
  * function to relocate all extents in a block group.
  */
@@ -3514,24 +3860,26 @@
 	struct btrfs_fs_info *fs_info = extent_root->fs_info;
 	struct reloc_control *rc;
 	int ret;
+	int rw = 0;
 	int err = 0;
 
-	rc = kzalloc(sizeof(*rc), GFP_NOFS);
+	rc = alloc_reloc_control();
 	if (!rc)
 		return -ENOMEM;
 
-	mapping_tree_init(&rc->reloc_root_tree);
-	extent_io_tree_init(&rc->processed_blocks, NULL, GFP_NOFS);
-	INIT_LIST_HEAD(&rc->reloc_roots);
+	rc->extent_root = extent_root;
 
 	rc->block_group = btrfs_lookup_block_group(fs_info, group_start);
 	BUG_ON(!rc->block_group);
 
-	btrfs_init_workers(&rc->workers, "relocate",
-			   fs_info->thread_pool_size, NULL);
-
-	rc->extent_root = extent_root;
-	btrfs_prepare_block_group_relocation(extent_root, rc->block_group);
+	if (!rc->block_group->ro) {
+		ret = btrfs_set_block_group_ro(extent_root, rc->block_group);
+		if (ret) {
+			err = ret;
+			goto out;
+		}
+		rw = 1;
+	}
 
 	rc->data_inode = create_reloc_inode(fs_info, rc->block_group);
 	if (IS_ERR(rc->data_inode)) {
@@ -3548,9 +3896,6 @@
 	btrfs_wait_ordered_extents(fs_info->tree_root, 0, 0);
 
 	while (1) {
-		rc->extents_found = 0;
-		rc->extents_skipped = 0;
-
 		mutex_lock(&fs_info->cleaner_mutex);
 
 		btrfs_clean_old_snapshots(fs_info->tree_root);
@@ -3559,7 +3904,7 @@
 		mutex_unlock(&fs_info->cleaner_mutex);
 		if (ret < 0) {
 			err = ret;
-			break;
+			goto out;
 		}
 
 		if (rc->extents_found == 0)
@@ -3573,18 +3918,6 @@
 			invalidate_mapping_pages(rc->data_inode->i_mapping,
 						 0, -1);
 			rc->stage = UPDATE_DATA_PTRS;
-		} else if (rc->stage == UPDATE_DATA_PTRS &&
-			   rc->extents_skipped >= rc->extents_found) {
-			iput(rc->data_inode);
-			rc->data_inode = create_reloc_inode(fs_info,
-							    rc->block_group);
-			if (IS_ERR(rc->data_inode)) {
-				err = PTR_ERR(rc->data_inode);
-				rc->data_inode = NULL;
-				break;
-			}
-			rc->stage = MOVE_DATA_EXTENTS;
-			rc->found_file_extent = 0;
 		}
 	}
 
@@ -3597,8 +3930,9 @@
 	WARN_ON(rc->block_group->reserved > 0);
 	WARN_ON(btrfs_block_group_used(&rc->block_group->item) > 0);
 out:
+	if (err && rw)
+		btrfs_set_block_group_rw(extent_root, rc->block_group);
 	iput(rc->data_inode);
-	btrfs_stop_workers(&rc->workers);
 	btrfs_put_block_group(rc->block_group);
 	kfree(rc);
 	return err;
@@ -3609,7 +3943,7 @@
 	struct btrfs_trans_handle *trans;
 	int ret;
 
-	trans = btrfs_start_transaction(root->fs_info->tree_root, 1);
+	trans = btrfs_start_transaction(root->fs_info->tree_root, 0);
 
 	memset(&root->root_item.drop_progress, 0,
 		sizeof(root->root_item.drop_progress));
@@ -3702,20 +4036,20 @@
 	if (list_empty(&reloc_roots))
 		goto out;
 
-	rc = kzalloc(sizeof(*rc), GFP_NOFS);
+	rc = alloc_reloc_control();
 	if (!rc) {
 		err = -ENOMEM;
 		goto out;
 	}
 
-	mapping_tree_init(&rc->reloc_root_tree);
-	INIT_LIST_HEAD(&rc->reloc_roots);
-	btrfs_init_workers(&rc->workers, "relocate",
-			   root->fs_info->thread_pool_size, NULL);
 	rc->extent_root = root->fs_info->extent_root;
 
 	set_reloc_control(rc);
 
+	trans = btrfs_join_transaction(rc->extent_root, 1);
+
+	rc->merge_reloc_tree = 1;
+
 	while (!list_empty(&reloc_roots)) {
 		reloc_root = list_entry(reloc_roots.next,
 					struct btrfs_root, root_list);
@@ -3735,20 +4069,16 @@
 		fs_root->reloc_root = reloc_root;
 	}
 
-	trans = btrfs_start_transaction(rc->extent_root, 1);
 	btrfs_commit_transaction(trans, rc->extent_root);
 
 	merge_reloc_roots(rc);
 
 	unset_reloc_control(rc);
 
-	trans = btrfs_start_transaction(rc->extent_root, 1);
+	trans = btrfs_join_transaction(rc->extent_root, 1);
 	btrfs_commit_transaction(trans, rc->extent_root);
 out:
-	if (rc) {
-		btrfs_stop_workers(&rc->workers);
-		kfree(rc);
-	}
+	kfree(rc);
 	while (!list_empty(&reloc_roots)) {
 		reloc_root = list_entry(reloc_roots.next,
 					struct btrfs_root, root_list);
@@ -3814,3 +4144,130 @@
 	btrfs_put_ordered_extent(ordered);
 	return 0;
 }
+
+void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
+			   struct btrfs_root *root, struct extent_buffer *buf,
+			   struct extent_buffer *cow)
+{
+	struct reloc_control *rc;
+	struct backref_node *node;
+	int first_cow = 0;
+	int level;
+	int ret;
+
+	rc = root->fs_info->reloc_ctl;
+	if (!rc)
+		return;
+
+	BUG_ON(rc->stage == UPDATE_DATA_PTRS &&
+	       root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID);
+
+	level = btrfs_header_level(buf);
+	if (btrfs_header_generation(buf) <=
+	    btrfs_root_last_snapshot(&root->root_item))
+		first_cow = 1;
+
+	if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID &&
+	    rc->create_reloc_tree) {
+		WARN_ON(!first_cow && level == 0);
+
+		node = rc->backref_cache.path[level];
+		BUG_ON(node->bytenr != buf->start &&
+		       node->new_bytenr != buf->start);
+
+		drop_node_buffer(node);
+		extent_buffer_get(cow);
+		node->eb = cow;
+		node->new_bytenr = cow->start;
+
+		if (!node->pending) {
+			list_move_tail(&node->list,
+				       &rc->backref_cache.pending[level]);
+			node->pending = 1;
+		}
+
+		if (first_cow)
+			__mark_block_processed(rc, node);
+
+		if (first_cow && level > 0)
+			rc->nodes_relocated += buf->len;
+	}
+
+	if (level == 0 && first_cow && rc->stage == UPDATE_DATA_PTRS) {
+		ret = replace_file_extents(trans, rc, root, cow);
+		BUG_ON(ret);
+	}
+}
+
+/*
+ * called before creating snapshot. it calculates metadata reservation
+ * requried for relocating tree blocks in the snapshot
+ */
+void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans,
+			      struct btrfs_pending_snapshot *pending,
+			      u64 *bytes_to_reserve)
+{
+	struct btrfs_root *root;
+	struct reloc_control *rc;
+
+	root = pending->root;
+	if (!root->reloc_root)
+		return;
+
+	rc = root->fs_info->reloc_ctl;
+	if (!rc->merge_reloc_tree)
+		return;
+
+	root = root->reloc_root;
+	BUG_ON(btrfs_root_refs(&root->root_item) == 0);
+	/*
+	 * relocation is in the stage of merging trees. the space
+	 * used by merging a reloc tree is twice the size of
+	 * relocated tree nodes in the worst case. half for cowing
+	 * the reloc tree, half for cowing the fs tree. the space
+	 * used by cowing the reloc tree will be freed after the
+	 * tree is dropped. if we create snapshot, cowing the fs
+	 * tree may use more space than it frees. so we need
+	 * reserve extra space.
+	 */
+	*bytes_to_reserve += rc->nodes_relocated;
+}
+
+/*
+ * called after snapshot is created. migrate block reservation
+ * and create reloc root for the newly created snapshot
+ */
+void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
+			       struct btrfs_pending_snapshot *pending)
+{
+	struct btrfs_root *root = pending->root;
+	struct btrfs_root *reloc_root;
+	struct btrfs_root *new_root;
+	struct reloc_control *rc;
+	int ret;
+
+	if (!root->reloc_root)
+		return;
+
+	rc = root->fs_info->reloc_ctl;
+	rc->merging_rsv_size += rc->nodes_relocated;
+
+	if (rc->merge_reloc_tree) {
+		ret = btrfs_block_rsv_migrate(&pending->block_rsv,
+					      rc->block_rsv,
+					      rc->nodes_relocated);
+		BUG_ON(ret);
+	}
+
+	new_root = pending->snap;
+	reloc_root = create_reloc_root(trans, root->reloc_root,
+				       new_root->root_key.objectid);
+
+	__add_reloc_root(reloc_root);
+	new_root->reloc_root = reloc_root;
+
+	if (rc->create_reloc_tree) {
+		ret = clone_backref_node(trans, rc, root, reloc_root);
+		BUG_ON(ret);
+	}
+}
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 67fa2d2..b91ccd9 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -259,6 +259,8 @@
 	struct extent_buffer *leaf;
 	struct btrfs_path *path;
 	struct btrfs_key key;
+	struct btrfs_key root_key;
+	struct btrfs_root *root;
 	int err = 0;
 	int ret;
 
@@ -270,6 +272,9 @@
 	key.type = BTRFS_ORPHAN_ITEM_KEY;
 	key.offset = 0;
 
+	root_key.type = BTRFS_ROOT_ITEM_KEY;
+	root_key.offset = (u64)-1;
+
 	while (1) {
 		ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0);
 		if (ret < 0) {
@@ -294,13 +299,25 @@
 		    key.type != BTRFS_ORPHAN_ITEM_KEY)
 			break;
 
-		ret = btrfs_find_dead_roots(tree_root, key.offset);
-		if (ret) {
+		root_key.objectid = key.offset;
+		key.offset++;
+
+		root = btrfs_read_fs_root_no_name(tree_root->fs_info,
+						  &root_key);
+		if (!IS_ERR(root))
+			continue;
+
+		ret = PTR_ERR(root);
+		if (ret != -ENOENT) {
 			err = ret;
 			break;
 		}
 
-		key.offset++;
+		ret = btrfs_find_dead_roots(tree_root, root_key.objectid);
+		if (ret) {
+			err = ret;
+			break;
+		}
 	}
 
 	btrfs_free_path(path);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1866dff..d34b2df 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -498,7 +498,7 @@
 	btrfs_start_delalloc_inodes(root, 0);
 	btrfs_wait_ordered_extents(root, 0, 0);
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_start_transaction(root, 0);
 	ret = btrfs_commit_transaction(trans, root);
 	return ret;
 }
@@ -694,11 +694,11 @@
 		if (btrfs_super_log_root(&root->fs_info->super_copy) != 0)
 			return -EINVAL;
 
-		/* recover relocation */
-		ret = btrfs_recover_relocation(root);
+		ret = btrfs_cleanup_fs_roots(root->fs_info);
 		WARN_ON(ret);
 
-		ret = btrfs_cleanup_fs_roots(root->fs_info);
+		/* recover relocation */
+		ret = btrfs_recover_relocation(root);
 		WARN_ON(ret);
 
 		sb->s_flags &= ~MS_RDONLY;
@@ -714,34 +714,18 @@
 	struct list_head *head = &root->fs_info->space_info;
 	struct btrfs_space_info *found;
 	u64 total_used = 0;
-	u64 data_used = 0;
 	int bits = dentry->d_sb->s_blocksize_bits;
 	__be32 *fsid = (__be32 *)root->fs_info->fsid;
 
 	rcu_read_lock();
-	list_for_each_entry_rcu(found, head, list) {
-		if (found->flags & (BTRFS_BLOCK_GROUP_DUP|
-				    BTRFS_BLOCK_GROUP_RAID10|
-				    BTRFS_BLOCK_GROUP_RAID1)) {
-			total_used += found->bytes_used;
-			if (found->flags & BTRFS_BLOCK_GROUP_DATA)
-				data_used += found->bytes_used;
-			else
-				data_used += found->total_bytes;
-		}
-
-		total_used += found->bytes_used;
-		if (found->flags & BTRFS_BLOCK_GROUP_DATA)
-			data_used += found->bytes_used;
-		else
-			data_used += found->total_bytes;
-	}
+	list_for_each_entry_rcu(found, head, list)
+		total_used += found->disk_used;
 	rcu_read_unlock();
 
 	buf->f_namelen = BTRFS_NAME_LEN;
 	buf->f_blocks = btrfs_super_total_bytes(disk_super) >> bits;
 	buf->f_bfree = buf->f_blocks - (total_used >> bits);
-	buf->f_bavail = buf->f_blocks - (data_used >> bits);
+	buf->f_bavail = buf->f_bfree;
 	buf->f_bsize = dentry->d_sb->s_blocksize;
 	buf->f_type = BTRFS_SUPER_MAGIC;
 
@@ -832,11 +816,14 @@
 };
 
 static struct miscdevice btrfs_misc = {
-	.minor		= MISC_DYNAMIC_MINOR,
+	.minor		= BTRFS_MINOR,
 	.name		= "btrfs-control",
 	.fops		= &btrfs_ctl_fops
 };
 
+MODULE_ALIAS_MISCDEV(BTRFS_MINOR);
+MODULE_ALIAS("devname:btrfs-control");
+
 static int btrfs_interface_init(void)
 {
 	return misc_register(&btrfs_misc);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 2cb1160..66e4c66 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -165,54 +165,89 @@
 	TRANS_USERSPACE,
 };
 
-static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
-					     int num_blocks, int type)
+static int may_wait_transaction(struct btrfs_root *root, int type)
 {
-	struct btrfs_trans_handle *h =
-		kmem_cache_alloc(btrfs_trans_handle_cachep, GFP_NOFS);
-	int ret;
-
-	mutex_lock(&root->fs_info->trans_mutex);
 	if (!root->fs_info->log_root_recovering &&
 	    ((type == TRANS_START && !root->fs_info->open_ioctl_trans) ||
 	     type == TRANS_USERSPACE))
+		return 1;
+	return 0;
+}
+
+static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
+						    u64 num_items, int type)
+{
+	struct btrfs_trans_handle *h;
+	struct btrfs_transaction *cur_trans;
+	int retries = 0;
+	int ret;
+again:
+	h = kmem_cache_alloc(btrfs_trans_handle_cachep, GFP_NOFS);
+	if (!h)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_lock(&root->fs_info->trans_mutex);
+	if (may_wait_transaction(root, type))
 		wait_current_trans(root);
+
 	ret = join_transaction(root);
 	BUG_ON(ret);
 
-	h->transid = root->fs_info->running_transaction->transid;
-	h->transaction = root->fs_info->running_transaction;
-	h->blocks_reserved = num_blocks;
+	cur_trans = root->fs_info->running_transaction;
+	cur_trans->use_count++;
+	mutex_unlock(&root->fs_info->trans_mutex);
+
+	h->transid = cur_trans->transid;
+	h->transaction = cur_trans;
 	h->blocks_used = 0;
 	h->block_group = 0;
-	h->alloc_exclude_nr = 0;
-	h->alloc_exclude_start = 0;
+	h->bytes_reserved = 0;
 	h->delayed_ref_updates = 0;
+	h->block_rsv = NULL;
+
+	smp_mb();
+	if (cur_trans->blocked && may_wait_transaction(root, type)) {
+		btrfs_commit_transaction(h, root);
+		goto again;
+	}
+
+	if (num_items > 0) {
+		ret = btrfs_trans_reserve_metadata(h, root, num_items,
+						   &retries);
+		if (ret == -EAGAIN) {
+			btrfs_commit_transaction(h, root);
+			goto again;
+		}
+		if (ret < 0) {
+			btrfs_end_transaction(h, root);
+			return ERR_PTR(ret);
+		}
+	}
+
+	mutex_lock(&root->fs_info->trans_mutex);
+	record_root_in_trans(h, root);
+	mutex_unlock(&root->fs_info->trans_mutex);
 
 	if (!current->journal_info && type != TRANS_USERSPACE)
 		current->journal_info = h;
-
-	root->fs_info->running_transaction->use_count++;
-	record_root_in_trans(h, root);
-	mutex_unlock(&root->fs_info->trans_mutex);
 	return h;
 }
 
 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
-						   int num_blocks)
+						   int num_items)
 {
-	return start_transaction(root, num_blocks, TRANS_START);
+	return start_transaction(root, num_items, TRANS_START);
 }
 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
 						   int num_blocks)
 {
-	return start_transaction(root, num_blocks, TRANS_JOIN);
+	return start_transaction(root, 0, TRANS_JOIN);
 }
 
 struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
 							 int num_blocks)
 {
-	return start_transaction(r, num_blocks, TRANS_USERSPACE);
+	return start_transaction(r, 0, TRANS_USERSPACE);
 }
 
 /* wait for a transaction commit to be fully complete */
@@ -286,10 +321,36 @@
 	mutex_unlock(&root->fs_info->trans_mutex);
 }
 
+static int should_end_transaction(struct btrfs_trans_handle *trans,
+				  struct btrfs_root *root)
+{
+	int ret;
+	ret = btrfs_block_rsv_check(trans, root,
+				    &root->fs_info->global_block_rsv, 0, 5);
+	return ret ? 1 : 0;
+}
+
+int btrfs_should_end_transaction(struct btrfs_trans_handle *trans,
+				 struct btrfs_root *root)
+{
+	struct btrfs_transaction *cur_trans = trans->transaction;
+	int updates;
+
+	if (cur_trans->blocked || cur_trans->delayed_refs.flushing)
+		return 1;
+
+	updates = trans->delayed_ref_updates;
+	trans->delayed_ref_updates = 0;
+	if (updates)
+		btrfs_run_delayed_refs(trans, root, updates);
+
+	return should_end_transaction(trans, root);
+}
+
 static int __btrfs_end_transaction(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root, int throttle)
 {
-	struct btrfs_transaction *cur_trans;
+	struct btrfs_transaction *cur_trans = trans->transaction;
 	struct btrfs_fs_info *info = root->fs_info;
 	int count = 0;
 
@@ -313,9 +374,21 @@
 		count++;
 	}
 
+	btrfs_trans_release_metadata(trans, root);
+
+	if (!root->fs_info->open_ioctl_trans &&
+	    should_end_transaction(trans, root))
+		trans->transaction->blocked = 1;
+
+	if (cur_trans->blocked && !cur_trans->in_commit) {
+		if (throttle)
+			return btrfs_commit_transaction(trans, root);
+		else
+			wake_up_process(info->transaction_kthread);
+	}
+
 	mutex_lock(&info->trans_mutex);
-	cur_trans = info->running_transaction;
-	WARN_ON(cur_trans != trans->transaction);
+	WARN_ON(cur_trans != info->running_transaction);
 	WARN_ON(cur_trans->num_writers < 1);
 	cur_trans->num_writers--;
 
@@ -603,6 +676,7 @@
 
 			btrfs_free_log(trans, root);
 			btrfs_update_reloc_root(trans, root);
+			btrfs_orphan_commit_root(trans, root);
 
 			if (root->commit_root != root->node) {
 				switch_commit_root(root);
@@ -627,30 +701,30 @@
 int btrfs_defrag_root(struct btrfs_root *root, int cacheonly)
 {
 	struct btrfs_fs_info *info = root->fs_info;
-	int ret;
 	struct btrfs_trans_handle *trans;
+	int ret;
 	unsigned long nr;
 
-	smp_mb();
-	if (root->defrag_running)
+	if (xchg(&root->defrag_running, 1))
 		return 0;
-	trans = btrfs_start_transaction(root, 1);
+
 	while (1) {
-		root->defrag_running = 1;
+		trans = btrfs_start_transaction(root, 0);
+		if (IS_ERR(trans))
+			return PTR_ERR(trans);
+
 		ret = btrfs_defrag_leaves(trans, root, cacheonly);
+
 		nr = trans->blocks_used;
 		btrfs_end_transaction(trans, root);
 		btrfs_btree_balance_dirty(info->tree_root, nr);
 		cond_resched();
 
-		trans = btrfs_start_transaction(root, 1);
 		if (root->fs_info->closing || ret != -EAGAIN)
 			break;
 	}
 	root->defrag_running = 0;
-	smp_mb();
-	btrfs_end_transaction(trans, root);
-	return 0;
+	return ret;
 }
 
 #if 0
@@ -758,47 +832,63 @@
 	struct btrfs_root *root = pending->root;
 	struct btrfs_root *parent_root;
 	struct inode *parent_inode;
+	struct dentry *dentry;
 	struct extent_buffer *tmp;
 	struct extent_buffer *old;
 	int ret;
-	u64 objectid;
-	int namelen;
+	int retries = 0;
+	u64 to_reserve = 0;
 	u64 index = 0;
-
-	parent_inode = pending->dentry->d_parent->d_inode;
-	parent_root = BTRFS_I(parent_inode)->root;
+	u64 objectid;
 
 	new_root_item = kmalloc(sizeof(*new_root_item), GFP_NOFS);
 	if (!new_root_item) {
-		ret = -ENOMEM;
+		pending->error = -ENOMEM;
 		goto fail;
 	}
+
 	ret = btrfs_find_free_objectid(trans, tree_root, 0, &objectid);
-	if (ret)
+	if (ret) {
+		pending->error = ret;
 		goto fail;
+	}
+
+	btrfs_reloc_pre_snapshot(trans, pending, &to_reserve);
+	btrfs_orphan_pre_snapshot(trans, pending, &to_reserve);
+
+	if (to_reserve > 0) {
+		ret = btrfs_block_rsv_add(trans, root, &pending->block_rsv,
+					  to_reserve, &retries);
+		if (ret) {
+			pending->error = ret;
+			goto fail;
+		}
+	}
 
 	key.objectid = objectid;
-	/* record when the snapshot was created in key.offset */
-	key.offset = trans->transid;
-	btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
+	key.offset = (u64)-1;
+	key.type = BTRFS_ROOT_ITEM_KEY;
 
-	memcpy(&pending->root_key, &key, sizeof(key));
-	pending->root_key.offset = (u64)-1;
+	trans->block_rsv = &pending->block_rsv;
 
+	dentry = pending->dentry;
+	parent_inode = dentry->d_parent->d_inode;
+	parent_root = BTRFS_I(parent_inode)->root;
 	record_root_in_trans(trans, parent_root);
+
 	/*
 	 * insert the directory item
 	 */
-	namelen = strlen(pending->name);
 	ret = btrfs_set_inode_index(parent_inode, &index);
 	BUG_ON(ret);
 	ret = btrfs_insert_dir_item(trans, parent_root,
-			    pending->name, namelen,
-			    parent_inode->i_ino,
-			    &pending->root_key, BTRFS_FT_DIR, index);
+				dentry->d_name.name, dentry->d_name.len,
+				parent_inode->i_ino, &key,
+				BTRFS_FT_DIR, index);
 	BUG_ON(ret);
 
-	btrfs_i_size_write(parent_inode, parent_inode->i_size + namelen * 2);
+	btrfs_i_size_write(parent_inode, parent_inode->i_size +
+					 dentry->d_name.len * 2);
 	ret = btrfs_update_inode(trans, parent_root, parent_inode);
 	BUG_ON(ret);
 
@@ -815,22 +905,32 @@
 	free_extent_buffer(old);
 
 	btrfs_set_root_node(new_root_item, tmp);
-	ret = btrfs_insert_root(trans, root->fs_info->tree_root, &key,
-				new_root_item);
-	BUG_ON(ret);
+	/* record when the snapshot was created in key.offset */
+	key.offset = trans->transid;
+	ret = btrfs_insert_root(trans, tree_root, &key, new_root_item);
 	btrfs_tree_unlock(tmp);
 	free_extent_buffer(tmp);
-
-	ret = btrfs_add_root_ref(trans, parent_root->fs_info->tree_root,
-				 pending->root_key.objectid,
-				 parent_root->root_key.objectid,
-				 parent_inode->i_ino, index, pending->name,
-				 namelen);
 	BUG_ON(ret);
 
+	/*
+	 * insert root back/forward references
+	 */
+	ret = btrfs_add_root_ref(trans, tree_root, objectid,
+				 parent_root->root_key.objectid,
+				 parent_inode->i_ino, index,
+				 dentry->d_name.name, dentry->d_name.len);
+	BUG_ON(ret);
+
+	key.offset = (u64)-1;
+	pending->snap = btrfs_read_fs_root_no_name(root->fs_info, &key);
+	BUG_ON(IS_ERR(pending->snap));
+
+	btrfs_reloc_post_snapshot(trans, pending);
+	btrfs_orphan_post_snapshot(trans, pending);
 fail:
 	kfree(new_root_item);
-	return ret;
+	btrfs_block_rsv_release(root, &pending->block_rsv, (u64)-1);
+	return 0;
 }
 
 /*
@@ -878,6 +978,16 @@
 	return ret;
 }
 
+int btrfs_transaction_blocked(struct btrfs_fs_info *info)
+{
+	int ret = 0;
+	spin_lock(&info->new_trans_lock);
+	if (info->running_transaction)
+		ret = info->running_transaction->blocked;
+	spin_unlock(&info->new_trans_lock);
+	return ret;
+}
+
 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root)
 {
@@ -899,6 +1009,8 @@
 	ret = btrfs_run_delayed_refs(trans, root, 0);
 	BUG_ON(ret);
 
+	btrfs_trans_release_metadata(trans, root);
+
 	cur_trans = trans->transaction;
 	/*
 	 * set the flushing flag so procs in this transaction have to
@@ -951,9 +1063,6 @@
 			snap_pending = 1;
 
 		WARN_ON(cur_trans != trans->transaction);
-		prepare_to_wait(&cur_trans->writer_wait, &wait,
-				TASK_UNINTERRUPTIBLE);
-
 		if (cur_trans->num_writers > 1)
 			timeout = MAX_SCHEDULE_TIMEOUT;
 		else if (should_grow)
@@ -976,6 +1085,9 @@
 		 */
 		btrfs_run_ordered_operations(root, 1);
 
+		prepare_to_wait(&cur_trans->writer_wait, &wait,
+				TASK_UNINTERRUPTIBLE);
+
 		smp_mb();
 		if (cur_trans->num_writers > 1 || should_grow)
 			schedule_timeout(timeout);
@@ -1103,9 +1215,9 @@
 
 		if (btrfs_header_backref_rev(root->node) <
 		    BTRFS_MIXED_BACKREF_REV)
-			btrfs_drop_snapshot(root, 0);
+			btrfs_drop_snapshot(root, NULL, 0);
 		else
-			btrfs_drop_snapshot(root, 1);
+			btrfs_drop_snapshot(root, NULL, 1);
 	}
 	return 0;
 }
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index 93c7ccb..e104986 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -45,20 +45,23 @@
 
 struct btrfs_trans_handle {
 	u64 transid;
+	u64 block_group;
+	u64 bytes_reserved;
 	unsigned long blocks_reserved;
 	unsigned long blocks_used;
-	struct btrfs_transaction *transaction;
-	u64 block_group;
-	u64 alloc_exclude_start;
-	u64 alloc_exclude_nr;
 	unsigned long delayed_ref_updates;
+	struct btrfs_transaction *transaction;
+	struct btrfs_block_rsv *block_rsv;
 };
 
 struct btrfs_pending_snapshot {
 	struct dentry *dentry;
 	struct btrfs_root *root;
-	char *name;
-	struct btrfs_key root_key;
+	struct btrfs_root *snap;
+	/* block reservation for the operation */
+	struct btrfs_block_rsv block_rsv;
+	/* extra metadata reseration for relocation */
+	int error;
 	struct list_head list;
 };
 
@@ -85,11 +88,11 @@
 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root);
 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
-						   int num_blocks);
+						   int num_items);
 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
-						   int num_blocks);
+						  int num_blocks);
 struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
-						   int num_blocks);
+							 int num_blocks);
 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
 				     struct btrfs_root *root);
 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
@@ -103,6 +106,8 @@
 			     struct btrfs_root *root);
 int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
 				   struct btrfs_root *root);
+int btrfs_should_end_transaction(struct btrfs_trans_handle *trans,
+				 struct btrfs_root *root);
 void btrfs_throttle(struct btrfs_root *root);
 int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root);
@@ -112,5 +117,6 @@
 				struct extent_io_tree *dirty_pages, int mark);
 int btrfs_wait_marked_extents(struct btrfs_root *root,
 				struct extent_io_tree *dirty_pages, int mark);
+int btrfs_transaction_blocked(struct btrfs_fs_info *info);
 int btrfs_transaction_in_commit(struct btrfs_fs_info *info);
 #endif
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index b10eacd..f7ac8e0 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -117,13 +117,14 @@
 				 path->nodes[1], 0,
 				 cache_only, &last_ret,
 				 &root->defrag_progress);
-	WARN_ON(ret && ret != -EAGAIN);
+	if (ret) {
+		WARN_ON(ret == -EAGAIN);
+		goto out;
+	}
 	if (next_key_ret == 0) {
 		memcpy(&root->defrag_progress, &key, sizeof(key));
 		ret = -EAGAIN;
 	}
-
-	btrfs_release_path(root, path);
 out:
 	if (path)
 		btrfs_free_path(path);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index af57dd2..fb102a9 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -135,6 +135,7 @@
 			   struct btrfs_root *root)
 {
 	int ret;
+	int err = 0;
 
 	mutex_lock(&root->log_mutex);
 	if (root->log_root) {
@@ -155,17 +156,19 @@
 	mutex_lock(&root->fs_info->tree_log_mutex);
 	if (!root->fs_info->log_root_tree) {
 		ret = btrfs_init_log_root_tree(trans, root->fs_info);
-		BUG_ON(ret);
+		if (ret)
+			err = ret;
 	}
-	if (!root->log_root) {
+	if (err == 0 && !root->log_root) {
 		ret = btrfs_add_log_tree(trans, root);
-		BUG_ON(ret);
+		if (ret)
+			err = ret;
 	}
 	mutex_unlock(&root->fs_info->tree_log_mutex);
 	root->log_batch++;
 	atomic_inc(&root->log_writers);
 	mutex_unlock(&root->log_mutex);
-	return 0;
+	return err;
 }
 
 /*
@@ -376,7 +379,7 @@
 			BUG_ON(ret);
 		}
 	} else if (ret) {
-		BUG();
+		return ret;
 	}
 	dst_ptr = btrfs_item_ptr_offset(path->nodes[0],
 					path->slots[0]);
@@ -1699,9 +1702,9 @@
 
 		next = btrfs_find_create_tree_block(root, bytenr, blocksize);
 
-		wc->process_func(root, next, wc, ptr_gen);
-
 		if (*level == 1) {
+			wc->process_func(root, next, wc, ptr_gen);
+
 			path->slots[*level]++;
 			if (wc->free) {
 				btrfs_read_buffer(next, ptr_gen);
@@ -1734,35 +1737,7 @@
 	WARN_ON(*level < 0);
 	WARN_ON(*level >= BTRFS_MAX_LEVEL);
 
-	if (path->nodes[*level] == root->node)
-		parent = path->nodes[*level];
-	else
-		parent = path->nodes[*level + 1];
-
-	bytenr = path->nodes[*level]->start;
-
-	blocksize = btrfs_level_size(root, *level);
-	root_owner = btrfs_header_owner(parent);
-	root_gen = btrfs_header_generation(parent);
-
-	wc->process_func(root, path->nodes[*level], wc,
-			 btrfs_header_generation(path->nodes[*level]));
-
-	if (wc->free) {
-		next = path->nodes[*level];
-		btrfs_tree_lock(next);
-		clean_tree_block(trans, root, next);
-		btrfs_set_lock_blocking(next);
-		btrfs_wait_tree_block_writeback(next);
-		btrfs_tree_unlock(next);
-
-		WARN_ON(root_owner != BTRFS_TREE_LOG_OBJECTID);
-		ret = btrfs_free_reserved_extent(root, bytenr, blocksize);
-		BUG_ON(ret);
-	}
-	free_extent_buffer(path->nodes[*level]);
-	path->nodes[*level] = NULL;
-	*level += 1;
+	path->slots[*level] = btrfs_header_nritems(path->nodes[*level]);
 
 	cond_resched();
 	return 0;
@@ -1781,7 +1756,7 @@
 
 	for (i = *level; i < BTRFS_MAX_LEVEL - 1 && path->nodes[i]; i++) {
 		slot = path->slots[i];
-		if (slot < btrfs_header_nritems(path->nodes[i]) - 1) {
+		if (slot + 1 < btrfs_header_nritems(path->nodes[i])) {
 			struct extent_buffer *node;
 			node = path->nodes[i];
 			path->slots[i]++;
@@ -2047,7 +2022,6 @@
 	mutex_unlock(&log_root_tree->log_mutex);
 
 	ret = update_log_root(trans, log);
-	BUG_ON(ret);
 
 	mutex_lock(&log_root_tree->log_mutex);
 	if (atomic_dec_and_test(&log_root_tree->log_writers)) {
@@ -2056,6 +2030,15 @@
 			wake_up(&log_root_tree->log_writer_wait);
 	}
 
+	if (ret) {
+		BUG_ON(ret != -ENOSPC);
+		root->fs_info->last_trans_log_full_commit = trans->transid;
+		btrfs_wait_marked_extents(log, &log->dirty_log_pages, mark);
+		mutex_unlock(&log_root_tree->log_mutex);
+		ret = -EAGAIN;
+		goto out;
+	}
+
 	index2 = log_root_tree->log_transid % 2;
 	if (atomic_read(&log_root_tree->log_commit[index2])) {
 		btrfs_wait_marked_extents(log, &log->dirty_log_pages, mark);
@@ -2129,15 +2112,10 @@
 	return 0;
 }
 
-/*
- * free all the extents used by the tree log.  This should be called
- * at commit time of the full transaction
- */
-int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root)
+static void free_log_tree(struct btrfs_trans_handle *trans,
+			  struct btrfs_root *log)
 {
 	int ret;
-	struct btrfs_root *log;
-	struct key;
 	u64 start;
 	u64 end;
 	struct walk_control wc = {
@@ -2145,10 +2123,6 @@
 		.process_func = process_one_buffer
 	};
 
-	if (!root->log_root || root->fs_info->log_root_recovering)
-		return 0;
-
-	log = root->log_root;
 	ret = walk_log_tree(trans, log, &wc);
 	BUG_ON(ret);
 
@@ -2162,14 +2136,30 @@
 				  EXTENT_DIRTY | EXTENT_NEW, GFP_NOFS);
 	}
 
-	if (log->log_transid > 0) {
-		ret = btrfs_del_root(trans, root->fs_info->log_root_tree,
-				     &log->root_key);
-		BUG_ON(ret);
-	}
-	root->log_root = NULL;
 	free_extent_buffer(log->node);
 	kfree(log);
+}
+
+/*
+ * free all the extents used by the tree log.  This should be called
+ * at commit time of the full transaction
+ */
+int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root)
+{
+	if (root->log_root) {
+		free_log_tree(trans, root->log_root);
+		root->log_root = NULL;
+	}
+	return 0;
+}
+
+int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
+			     struct btrfs_fs_info *fs_info)
+{
+	if (fs_info->log_root_tree) {
+		free_log_tree(trans, fs_info->log_root_tree);
+		fs_info->log_root_tree = NULL;
+	}
 	return 0;
 }
 
@@ -2203,6 +2193,7 @@
 	struct btrfs_dir_item *di;
 	struct btrfs_path *path;
 	int ret;
+	int err = 0;
 	int bytes_del = 0;
 
 	if (BTRFS_I(dir)->logged_trans < trans->transid)
@@ -2218,7 +2209,11 @@
 	path = btrfs_alloc_path();
 	di = btrfs_lookup_dir_item(trans, log, path, dir->i_ino,
 				   name, name_len, -1);
-	if (di && !IS_ERR(di)) {
+	if (IS_ERR(di)) {
+		err = PTR_ERR(di);
+		goto fail;
+	}
+	if (di) {
 		ret = btrfs_delete_one_dir_name(trans, log, path, di);
 		bytes_del += name_len;
 		BUG_ON(ret);
@@ -2226,7 +2221,11 @@
 	btrfs_release_path(log, path);
 	di = btrfs_lookup_dir_index_item(trans, log, path, dir->i_ino,
 					 index, name, name_len, -1);
-	if (di && !IS_ERR(di)) {
+	if (IS_ERR(di)) {
+		err = PTR_ERR(di);
+		goto fail;
+	}
+	if (di) {
 		ret = btrfs_delete_one_dir_name(trans, log, path, di);
 		bytes_del += name_len;
 		BUG_ON(ret);
@@ -2244,6 +2243,10 @@
 		btrfs_release_path(log, path);
 
 		ret = btrfs_search_slot(trans, log, &key, path, 0, 1);
+		if (ret < 0) {
+			err = ret;
+			goto fail;
+		}
 		if (ret == 0) {
 			struct btrfs_inode_item *item;
 			u64 i_size;
@@ -2261,9 +2264,13 @@
 			ret = 0;
 		btrfs_release_path(log, path);
 	}
-
+fail:
 	btrfs_free_path(path);
 	mutex_unlock(&BTRFS_I(dir)->log_mutex);
+	if (ret == -ENOSPC) {
+		root->fs_info->last_trans_log_full_commit = trans->transid;
+		ret = 0;
+	}
 	btrfs_end_log_trans(root);
 
 	return 0;
@@ -2291,6 +2298,10 @@
 	ret = btrfs_del_inode_ref(trans, log, name, name_len, inode->i_ino,
 				  dirid, &index);
 	mutex_unlock(&BTRFS_I(inode)->log_mutex);
+	if (ret == -ENOSPC) {
+		root->fs_info->last_trans_log_full_commit = trans->transid;
+		ret = 0;
+	}
 	btrfs_end_log_trans(root);
 
 	return ret;
@@ -2318,7 +2329,8 @@
 	else
 		key.type = BTRFS_DIR_LOG_INDEX_KEY;
 	ret = btrfs_insert_empty_item(trans, log, path, &key, sizeof(*item));
-	BUG_ON(ret);
+	if (ret)
+		return ret;
 
 	item = btrfs_item_ptr(path->nodes[0], path->slots[0],
 			      struct btrfs_dir_log_item);
@@ -2343,6 +2355,7 @@
 	struct btrfs_key max_key;
 	struct btrfs_root *log = root->log_root;
 	struct extent_buffer *src;
+	int err = 0;
 	int ret;
 	int i;
 	int nritems;
@@ -2405,6 +2418,10 @@
 			ret = overwrite_item(trans, log, dst_path,
 					     path->nodes[0], path->slots[0],
 					     &tmp);
+			if (ret) {
+				err = ret;
+				goto done;
+			}
 		}
 	}
 	btrfs_release_path(root, path);
@@ -2432,7 +2449,10 @@
 				goto done;
 			ret = overwrite_item(trans, log, dst_path, src, i,
 					     &min_key);
-			BUG_ON(ret);
+			if (ret) {
+				err = ret;
+				goto done;
+			}
 		}
 		path->slots[0] = nritems;
 
@@ -2454,22 +2474,30 @@
 			ret = overwrite_item(trans, log, dst_path,
 					     path->nodes[0], path->slots[0],
 					     &tmp);
-
-			BUG_ON(ret);
-			last_offset = tmp.offset;
+			if (ret)
+				err = ret;
+			else
+				last_offset = tmp.offset;
 			goto done;
 		}
 	}
 done:
-	*last_offset_ret = last_offset;
 	btrfs_release_path(root, path);
 	btrfs_release_path(log, dst_path);
 
-	/* insert the log range keys to indicate where the log is valid */
-	ret = insert_dir_log_key(trans, log, path, key_type, inode->i_ino,
-				 first_offset, last_offset);
-	BUG_ON(ret);
-	return 0;
+	if (err == 0) {
+		*last_offset_ret = last_offset;
+		/*
+		 * insert the log range keys to indicate where the log
+		 * is valid
+		 */
+		ret = insert_dir_log_key(trans, log, path, key_type,
+					 inode->i_ino, first_offset,
+					 last_offset);
+		if (ret)
+			err = ret;
+	}
+	return err;
 }
 
 /*
@@ -2501,7 +2529,8 @@
 		ret = log_dir_items(trans, root, inode, path,
 				    dst_path, key_type, min_key,
 				    &max_key);
-		BUG_ON(ret);
+		if (ret)
+			return ret;
 		if (max_key == (u64)-1)
 			break;
 		min_key = max_key + 1;
@@ -2535,8 +2564,8 @@
 
 	while (1) {
 		ret = btrfs_search_slot(trans, log, &key, path, -1, 1);
-
-		if (ret != 1)
+		BUG_ON(ret == 0);
+		if (ret < 0)
 			break;
 
 		if (path->slots[0] == 0)
@@ -2554,7 +2583,7 @@
 		btrfs_release_path(log, path);
 	}
 	btrfs_release_path(log, path);
-	return 0;
+	return ret;
 }
 
 static noinline int copy_items(struct btrfs_trans_handle *trans,
@@ -2587,7 +2616,10 @@
 	}
 	ret = btrfs_insert_empty_items(trans, log, dst_path,
 				       ins_keys, ins_sizes, nr);
-	BUG_ON(ret);
+	if (ret) {
+		kfree(ins_data);
+		return ret;
+	}
 
 	for (i = 0; i < nr; i++, dst_path->slots[0]++) {
 		dst_offset = btrfs_item_ptr_offset(dst_path->nodes[0],
@@ -2660,16 +2692,17 @@
 	 * we have to do this after the loop above to avoid changing the
 	 * log tree while trying to change the log tree.
 	 */
+	ret = 0;
 	while (!list_empty(&ordered_sums)) {
 		struct btrfs_ordered_sum *sums = list_entry(ordered_sums.next,
 						   struct btrfs_ordered_sum,
 						   list);
-		ret = btrfs_csum_file_blocks(trans, log, sums);
-		BUG_ON(ret);
+		if (!ret)
+			ret = btrfs_csum_file_blocks(trans, log, sums);
 		list_del(&sums->list);
 		kfree(sums);
 	}
-	return 0;
+	return ret;
 }
 
 /* log a single inode in the tree log.
@@ -2697,6 +2730,7 @@
 	struct btrfs_root *log = root->log_root;
 	struct extent_buffer *src = NULL;
 	u32 size;
+	int err = 0;
 	int ret;
 	int nritems;
 	int ins_start_slot = 0;
@@ -2739,7 +2773,10 @@
 	} else {
 		ret = btrfs_truncate_inode_items(trans, log, inode, 0, 0);
 	}
-	BUG_ON(ret);
+	if (ret) {
+		err = ret;
+		goto out_unlock;
+	}
 	path->keep_locks = 1;
 
 	while (1) {
@@ -2768,7 +2805,10 @@
 
 		ret = copy_items(trans, log, dst_path, src, ins_start_slot,
 				 ins_nr, inode_only);
-		BUG_ON(ret);
+		if (ret) {
+			err = ret;
+			goto out_unlock;
+		}
 		ins_nr = 1;
 		ins_start_slot = path->slots[0];
 next_slot:
@@ -2784,7 +2824,10 @@
 			ret = copy_items(trans, log, dst_path, src,
 					 ins_start_slot,
 					 ins_nr, inode_only);
-			BUG_ON(ret);
+			if (ret) {
+				err = ret;
+				goto out_unlock;
+			}
 			ins_nr = 0;
 		}
 		btrfs_release_path(root, path);
@@ -2802,7 +2845,10 @@
 		ret = copy_items(trans, log, dst_path, src,
 				 ins_start_slot,
 				 ins_nr, inode_only);
-		BUG_ON(ret);
+		if (ret) {
+			err = ret;
+			goto out_unlock;
+		}
 		ins_nr = 0;
 	}
 	WARN_ON(ins_nr);
@@ -2810,14 +2856,18 @@
 		btrfs_release_path(root, path);
 		btrfs_release_path(log, dst_path);
 		ret = log_directory_changes(trans, root, inode, path, dst_path);
-		BUG_ON(ret);
+		if (ret) {
+			err = ret;
+			goto out_unlock;
+		}
 	}
 	BTRFS_I(inode)->logged_trans = trans->transid;
+out_unlock:
 	mutex_unlock(&BTRFS_I(inode)->log_mutex);
 
 	btrfs_free_path(path);
 	btrfs_free_path(dst_path);
-	return 0;
+	return err;
 }
 
 /*
@@ -2942,10 +2992,13 @@
 		goto end_no_trans;
 	}
 
-	start_log_trans(trans, root);
+	ret = start_log_trans(trans, root);
+	if (ret)
+		goto end_trans;
 
 	ret = btrfs_log_inode(trans, root, inode, inode_only);
-	BUG_ON(ret);
+	if (ret)
+		goto end_trans;
 
 	/*
 	 * for regular files, if its inode is already on disk, we don't
@@ -2955,8 +3008,10 @@
 	 */
 	if (S_ISREG(inode->i_mode) &&
 	    BTRFS_I(inode)->generation <= last_committed &&
-	    BTRFS_I(inode)->last_unlink_trans <= last_committed)
-			goto no_parent;
+	    BTRFS_I(inode)->last_unlink_trans <= last_committed) {
+		ret = 0;
+		goto end_trans;
+	}
 
 	inode_only = LOG_INODE_EXISTS;
 	while (1) {
@@ -2970,15 +3025,21 @@
 		if (BTRFS_I(inode)->generation >
 		    root->fs_info->last_trans_committed) {
 			ret = btrfs_log_inode(trans, root, inode, inode_only);
-			BUG_ON(ret);
+			if (ret)
+				goto end_trans;
 		}
 		if (IS_ROOT(parent))
 			break;
 
 		parent = parent->d_parent;
 	}
-no_parent:
 	ret = 0;
+end_trans:
+	if (ret < 0) {
+		BUG_ON(ret != -ENOSPC);
+		root->fs_info->last_trans_log_full_commit = trans->transid;
+		ret = 1;
+	}
 	btrfs_end_log_trans(root);
 end_no_trans:
 	return ret;
@@ -3020,7 +3081,7 @@
 	path = btrfs_alloc_path();
 	BUG_ON(!path);
 
-	trans = btrfs_start_transaction(fs_info->tree_root, 1);
+	trans = btrfs_start_transaction(fs_info->tree_root, 0);
 
 	wc.trans = trans;
 	wc.pin = 1;
diff --git a/fs/btrfs/tree-log.h b/fs/btrfs/tree-log.h
index 0776eac..3dfae84 100644
--- a/fs/btrfs/tree-log.h
+++ b/fs/btrfs/tree-log.h
@@ -25,6 +25,8 @@
 int btrfs_sync_log(struct btrfs_trans_handle *trans,
 		   struct btrfs_root *root);
 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
+int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
+			     struct btrfs_fs_info *fs_info);
 int btrfs_recover_log_trees(struct btrfs_root *tree_root);
 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root, struct dentry *dentry);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 8db7b14..d6e3af8 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1097,7 +1097,7 @@
 	if (!path)
 		return -ENOMEM;
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_start_transaction(root, 0);
 	key.objectid = BTRFS_DEV_ITEMS_OBJECTID;
 	key.type = BTRFS_DEV_ITEM_KEY;
 	key.offset = device->devid;
@@ -1486,7 +1486,7 @@
 		goto error;
 	}
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_start_transaction(root, 0);
 	lock_chunks(root);
 
 	device->barriers = 1;
@@ -1751,9 +1751,10 @@
 
 	/* step one, relocate all the extents inside this chunk */
 	ret = btrfs_relocate_block_group(extent_root, chunk_offset);
-	BUG_ON(ret);
+	if (ret)
+		return ret;
 
-	trans = btrfs_start_transaction(root, 1);
+	trans = btrfs_start_transaction(root, 0);
 	BUG_ON(!trans);
 
 	lock_chunks(root);
@@ -1925,7 +1926,7 @@
 			break;
 		BUG_ON(ret);
 
-		trans = btrfs_start_transaction(dev_root, 1);
+		trans = btrfs_start_transaction(dev_root, 0);
 		BUG_ON(!trans);
 
 		ret = btrfs_grow_device(trans, device, old_size);
@@ -2094,11 +2095,7 @@
 	}
 
 	/* Shrinking succeeded, else we would be at "done". */
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans) {
-		ret = -ENOMEM;
-		goto done;
-	}
+	trans = btrfs_start_transaction(root, 0);
 	lock_chunks(root);
 
 	device->disk_total_bytes = new_size;
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 59acd3e..88ecbb2 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -154,15 +154,10 @@
 	if (trans)
 		return do_setxattr(trans, inode, name, value, size, flags);
 
-	ret = btrfs_reserve_metadata_space(root, 2);
-	if (ret)
-		return ret;
+	trans = btrfs_start_transaction(root, 2);
+	if (IS_ERR(trans))
+		return PTR_ERR(trans);
 
-	trans = btrfs_start_transaction(root, 1);
-	if (!trans) {
-		ret = -ENOMEM;
-		goto out;
-	}
 	btrfs_set_trans_block_group(trans, inode);
 
 	ret = do_setxattr(trans, inode, name, value, size, flags);
@@ -174,7 +169,6 @@
 	BUG_ON(ret);
 out:
 	btrfs_end_transaction_throttle(trans, root);
-	btrfs_unreserve_metadata_space(root, 2);
 	return ret;
 }
 
diff --git a/fs/buffer.c b/fs/buffer.c
index e8aa708..d54812b 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1949,14 +1949,11 @@
 }
 
 /*
- * block_write_begin takes care of the basic task of block allocation and
- * bringing partial write blocks uptodate first.
- *
- * If *pagep is not NULL, then block_write_begin uses the locked page
- * at *pagep rather than allocating its own. In this case, the page will
- * not be unlocked or deallocated on failure.
+ * Filesystems implementing the new truncate sequence should use the
+ * _newtrunc postfix variant which won't incorrectly call vmtruncate.
+ * The filesystem needs to handle block truncation upon failure.
  */
-int block_write_begin(struct file *file, struct address_space *mapping,
+int block_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata,
 			get_block_t *get_block)
@@ -1992,20 +1989,50 @@
 			unlock_page(page);
 			page_cache_release(page);
 			*pagep = NULL;
-
-			/*
-			 * prepare_write() may have instantiated a few blocks
-			 * outside i_size.  Trim these off again. Don't need
-			 * i_size_read because we hold i_mutex.
-			 */
-			if (pos + len > inode->i_size)
-				vmtruncate(inode, inode->i_size);
 		}
 	}
 
 out:
 	return status;
 }
+EXPORT_SYMBOL(block_write_begin_newtrunc);
+
+/*
+ * block_write_begin takes care of the basic task of block allocation and
+ * bringing partial write blocks uptodate first.
+ *
+ * If *pagep is not NULL, then block_write_begin uses the locked page
+ * at *pagep rather than allocating its own. In this case, the page will
+ * not be unlocked or deallocated on failure.
+ */
+int block_write_begin(struct file *file, struct address_space *mapping,
+			loff_t pos, unsigned len, unsigned flags,
+			struct page **pagep, void **fsdata,
+			get_block_t *get_block)
+{
+	int ret;
+
+	ret = block_write_begin_newtrunc(file, mapping, pos, len, flags,
+					pagep, fsdata, get_block);
+
+	/*
+	 * prepare_write() may have instantiated a few blocks
+	 * outside i_size.  Trim these off again. Don't need
+	 * i_size_read because we hold i_mutex.
+	 *
+	 * Filesystems which pass down their own page also cannot
+	 * call into vmtruncate here because it would lead to lock
+	 * inversion problems (*pagep is locked). This is a further
+	 * example of where the old truncate sequence is inadequate.
+	 */
+	if (unlikely(ret) && *pagep == NULL) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
+}
 EXPORT_SYMBOL(block_write_begin);
 
 int block_write_end(struct file *file, struct address_space *mapping,
@@ -2324,7 +2351,7 @@
  * For moronic filesystems that do not allow holes in file.
  * We may have to extend the file.
  */
-int cont_write_begin(struct file *file, struct address_space *mapping,
+int cont_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata,
 			get_block_t *get_block, loff_t *bytes)
@@ -2345,11 +2372,30 @@
 	}
 
 	*pagep = NULL;
-	err = block_write_begin(file, mapping, pos, len,
+	err = block_write_begin_newtrunc(file, mapping, pos, len,
 				flags, pagep, fsdata, get_block);
 out:
 	return err;
 }
+EXPORT_SYMBOL(cont_write_begin_newtrunc);
+
+int cont_write_begin(struct file *file, struct address_space *mapping,
+			loff_t pos, unsigned len, unsigned flags,
+			struct page **pagep, void **fsdata,
+			get_block_t *get_block, loff_t *bytes)
+{
+	int ret;
+
+	ret = cont_write_begin_newtrunc(file, mapping, pos, len, flags,
+					pagep, fsdata, get_block, bytes);
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
+
+	return ret;
+}
 EXPORT_SYMBOL(cont_write_begin);
 
 int block_prepare_write(struct page *page, unsigned from, unsigned to,
@@ -2381,7 +2427,7 @@
  *
  * We are not allowed to take the i_mutex here so we have to play games to
  * protect against truncate races as the page could now be beyond EOF.  Because
- * vmtruncate() writes the inode size before removing pages, once we have the
+ * truncate writes the inode size before removing pages, once we have the
  * page lock we can determine safely if the page is beyond EOF. If it is not
  * beyond EOF, then the page is guaranteed safe against truncation until we
  * unlock the page.
@@ -2464,10 +2510,11 @@
 }
 
 /*
- * On entry, the page is fully not uptodate.
- * On exit the page is fully uptodate in the areas outside (from,to)
+ * Filesystems implementing the new truncate sequence should use the
+ * _newtrunc postfix variant which won't incorrectly call vmtruncate.
+ * The filesystem needs to handle block truncation upon failure.
  */
-int nobh_write_begin(struct file *file, struct address_space *mapping,
+int nobh_write_begin_newtrunc(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata,
 			get_block_t *get_block)
@@ -2500,8 +2547,8 @@
 		unlock_page(page);
 		page_cache_release(page);
 		*pagep = NULL;
-		return block_write_begin(file, mapping, pos, len, flags, pagep,
-					fsdata, get_block);
+		return block_write_begin_newtrunc(file, mapping, pos, len,
+					flags, pagep, fsdata, get_block);
 	}
 
 	if (PageMappedToDisk(page))
@@ -2605,8 +2652,34 @@
 	page_cache_release(page);
 	*pagep = NULL;
 
-	if (pos + len > inode->i_size)
-		vmtruncate(inode, inode->i_size);
+	return ret;
+}
+EXPORT_SYMBOL(nobh_write_begin_newtrunc);
+
+/*
+ * On entry, the page is fully not uptodate.
+ * On exit the page is fully uptodate in the areas outside (from,to)
+ */
+int nobh_write_begin(struct file *file, struct address_space *mapping,
+			loff_t pos, unsigned len, unsigned flags,
+			struct page **pagep, void **fsdata,
+			get_block_t *get_block)
+{
+	int ret;
+
+	ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags,
+					pagep, fsdata, get_block);
+
+	/*
+	 * prepare_write() may have instantiated a few blocks
+	 * outside i_size.  Trim these off again. Don't need
+	 * i_size_read because we hold i_mutex.
+	 */
+	if (unlikely(ret)) {
+		loff_t isize = mapping->host->i_size;
+		if (pos + len > isize)
+			vmtruncate(mapping->host, isize);
+	}
 
 	return ret;
 }
diff --git a/fs/ceph/auth.c b/fs/ceph/auth.c
index 9f46de2..89490bea 100644
--- a/fs/ceph/auth.c
+++ b/fs/ceph/auth.c
@@ -1,7 +1,6 @@
 #include "ceph_debug.h"
 
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/slab.h>
 
@@ -217,8 +216,8 @@
 		if (ac->protocol != protocol) {
 			ret = ceph_auth_init_protocol(ac, protocol);
 			if (ret) {
-				pr_err("error %d on auth method %s init\n",
-				       ret, ac->ops->name);
+				pr_err("error %d on auth protocol %d init\n",
+				       ret, protocol);
 				goto out;
 			}
 		}
@@ -247,7 +246,7 @@
 	if (!ac->protocol)
 		return ceph_auth_build_hello(ac, msg_buf, msg_len);
 	BUG_ON(!ac->ops);
-	if (!ac->ops->is_authenticated(ac))
+	if (ac->ops->should_authenticate(ac))
 		return ceph_build_auth_request(ac, msg_buf, msg_len);
 	return 0;
 }
diff --git a/fs/ceph/auth.h b/fs/ceph/auth.h
index 4429a70..d38a2fb 100644
--- a/fs/ceph/auth.h
+++ b/fs/ceph/auth.h
@@ -24,6 +24,12 @@
 	int (*is_authenticated)(struct ceph_auth_client *ac);
 
 	/*
+	 * true if we should (re)authenticate, e.g., when our tickets
+	 * are getting old and crusty.
+	 */
+	int (*should_authenticate)(struct ceph_auth_client *ac);
+
+	/*
 	 * build requests and process replies during monitor
 	 * handshake.  if handle_reply returns -EAGAIN, we build
 	 * another request.
diff --git a/fs/ceph/auth_none.c b/fs/ceph/auth_none.c
index 24407c1..ad1dc21 100644
--- a/fs/ceph/auth_none.c
+++ b/fs/ceph/auth_none.c
@@ -31,6 +31,13 @@
 	return !xi->starting;
 }
 
+static int should_authenticate(struct ceph_auth_client *ac)
+{
+	struct ceph_auth_none_info *xi = ac->private;
+
+	return xi->starting;
+}
+
 /*
  * the generic auth code decode the global_id, and we carry no actual
  * authenticate state, so nothing happens here.
@@ -98,6 +105,7 @@
 	.reset = reset,
 	.destroy = destroy,
 	.is_authenticated = is_authenticated,
+	.should_authenticate = should_authenticate,
 	.handle_reply = handle_reply,
 	.create_authorizer = ceph_auth_none_create_authorizer,
 	.destroy_authorizer = ceph_auth_none_destroy_authorizer,
diff --git a/fs/ceph/auth_x.c b/fs/ceph/auth_x.c
index 7b20623..83d4d27 100644
--- a/fs/ceph/auth_x.c
+++ b/fs/ceph/auth_x.c
@@ -27,6 +27,17 @@
 	return (ac->want_keys & xi->have_keys) == ac->want_keys;
 }
 
+static int ceph_x_should_authenticate(struct ceph_auth_client *ac)
+{
+	struct ceph_x_info *xi = ac->private;
+	int need;
+
+	ceph_x_validate_tickets(ac, &need);
+	dout("ceph_x_should_authenticate want=%d need=%d have=%d\n",
+	     ac->want_keys, need, xi->have_keys);
+	return need != 0;
+}
+
 static int ceph_x_encrypt_buflen(int ilen)
 {
 	return sizeof(struct ceph_x_encrypt_header) + ilen + 16 +
@@ -620,6 +631,7 @@
 static const struct ceph_auth_client_ops ceph_x_ops = {
 	.name = "x",
 	.is_authenticated = ceph_x_is_authenticated,
+	.should_authenticate = ceph_x_should_authenticate,
 	.build_request = ceph_x_build_request,
 	.handle_reply = ceph_x_handle_reply,
 	.create_authorizer = ceph_x_create_authorizer,
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 0dd0b81..ae3e3a3 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1776,9 +1776,9 @@
 	spin_unlock(&ci->i_unsafe_lock);
 }
 
-int ceph_fsync(struct file *file, struct dentry *dentry, int datasync)
+int ceph_fsync(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	unsigned flush_tid;
 	int ret;
diff --git a/fs/ceph/ceph_fs.h b/fs/ceph/ceph_fs.h
index 3b9eeed..2fa992e 100644
--- a/fs/ceph/ceph_fs.h
+++ b/fs/ceph/ceph_fs.h
@@ -265,16 +265,17 @@
  *  - they also define the lock ordering by the MDS
  *  - a few of these are internal to the mds
  */
-#define CEPH_LOCK_DN          1
-#define CEPH_LOCK_ISNAP       2
-#define CEPH_LOCK_IVERSION    4     /* mds internal */
-#define CEPH_LOCK_IFILE       8     /* mds internal */
-#define CEPH_LOCK_IAUTH       32
-#define CEPH_LOCK_ILINK       64
-#define CEPH_LOCK_IDFT        128   /* dir frag tree */
-#define CEPH_LOCK_INEST       256   /* mds internal */
-#define CEPH_LOCK_IXATTR      512
-#define CEPH_LOCK_INO         2048  /* immutable inode bits; not a lock */
+#define CEPH_LOCK_DVERSION    1
+#define CEPH_LOCK_DN          2
+#define CEPH_LOCK_ISNAP       16
+#define CEPH_LOCK_IVERSION    32    /* mds internal */
+#define CEPH_LOCK_IFILE       64
+#define CEPH_LOCK_IAUTH       128
+#define CEPH_LOCK_ILINK       256
+#define CEPH_LOCK_IDFT        512   /* dir frag tree */
+#define CEPH_LOCK_INEST       1024  /* mds internal */
+#define CEPH_LOCK_IXATTR      2048
+#define CEPH_LOCK_INO         8192  /* immutable inode bits; not a lock */
 
 /* client_session ops */
 enum {
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 4fd3090..f857193 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -587,7 +587,7 @@
 		CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP;
 	req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS);
 	if (IS_ERR(req))
-		return ERR_PTR(PTR_ERR(req));
+		return ERR_CAST(req);
 	req->r_dentry = dget(dentry);
 	req->r_num_caps = 2;
 	/* we only need inode linkage */
@@ -1107,10 +1107,9 @@
  * an fsync() on a dir will wait for any uncommitted directory
  * operations to commit.
  */
-static int ceph_dir_fsync(struct file *file, struct dentry *dentry,
-			  int datasync)
+static int ceph_dir_fsync(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_path.dentry->d_inode;
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct list_head *head = &ci->i_unsafe_dirops;
 	struct ceph_mds_request *req;
diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index 1744764..4480cb1 100644
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -133,7 +133,7 @@
 		req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LOOKUPHASH,
 					       USE_ANY_MDS);
 		if (IS_ERR(req))
-			return ERR_PTR(PTR_ERR(req));
+			return ERR_CAST(req);
 
 		req->r_ino1 = vino;
 		req->r_ino2.ino = cfh->parent_ino;
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 6512b67..6251a15 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -230,7 +230,7 @@
 	/* do the open */
 	req = prepare_open_request(dir->i_sb, flags, mode);
 	if (IS_ERR(req))
-		return ERR_PTR(PTR_ERR(req));
+		return ERR_CAST(req);
 	req->r_dentry = dget(dentry);
 	req->r_num_caps = 2;
 	if (flags & O_CREAT) {
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index a81b8b6..226f5a5 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -69,7 +69,7 @@
 
 	BUG_ON(!S_ISDIR(parent->i_mode));
 	if (IS_ERR(inode))
-		return ERR_PTR(PTR_ERR(inode));
+		return inode;
 	inode->i_mode = parent->i_mode;
 	inode->i_uid = parent->i_uid;
 	inode->i_gid = parent->i_gid;
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 885aa57..b49f128 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1768,12 +1768,12 @@
 	mutex_unlock(&mdsc->mutex);
 	dout("do_request waiting\n");
 	if (req->r_timeout) {
-		err = (long)wait_for_completion_interruptible_timeout(
+		err = (long)wait_for_completion_killable_timeout(
 			&req->r_completion, req->r_timeout);
 		if (err == 0)
 			err = -EIO;
 	} else {
-		err = wait_for_completion_interruptible(&req->r_completion);
+		err = wait_for_completion_killable(&req->r_completion);
 	}
 	dout("do_request waited, got %d\n", err);
 	mutex_lock(&mdsc->mutex);
@@ -2014,16 +2014,21 @@
 	mutex_lock(&mdsc->mutex);
 	req = __lookup_request(mdsc, tid);
 	if (!req) {
-		dout("forward %llu to mds%d - req dne\n", tid, next_mds);
+		dout("forward tid %llu to mds%d - req dne\n", tid, next_mds);
 		goto out;  /* dup reply? */
 	}
 
-	if (fwd_seq <= req->r_num_fwd) {
-		dout("forward %llu to mds%d - old seq %d <= %d\n",
+	if (req->r_aborted) {
+		dout("forward tid %llu aborted, unregistering\n", tid);
+		__unregister_request(mdsc, req);
+	} else if (fwd_seq <= req->r_num_fwd) {
+		dout("forward tid %llu to mds%d - old seq %d <= %d\n",
 		     tid, next_mds, req->r_num_fwd, fwd_seq);
 	} else {
 		/* resend. forward race not possible; mds would drop */
-		dout("forward %llu to mds%d (we resend)\n", tid, next_mds);
+		dout("forward tid %llu to mds%d (we resend)\n", tid, next_mds);
+		BUG_ON(req->r_err);
+		BUG_ON(req->r_got_result);
 		req->r_num_fwd = fwd_seq;
 		req->r_resend_mds = next_mds;
 		put_request_session(req);
@@ -2541,7 +2546,7 @@
 		return;
 	lease = msg->front.iov_base;
 	lease->action = action;
-	lease->mask = cpu_to_le16(CEPH_LOCK_DN);
+	lease->mask = cpu_to_le16(1);
 	lease->ino = cpu_to_le64(ceph_vino(inode).ino);
 	lease->first = lease->last = cpu_to_le64(ceph_vino(inode).snap);
 	lease->seq = cpu_to_le32(seq);
@@ -2571,7 +2576,7 @@
 
 	BUG_ON(inode == NULL);
 	BUG_ON(dentry == NULL);
-	BUG_ON(mask != CEPH_LOCK_DN);
+	BUG_ON(mask == 0);
 
 	/* is dentry lease valid? */
 	spin_lock(&dentry->d_lock);
diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index 60b7483..64b8b1f 100644
--- a/fs/ceph/messenger.c
+++ b/fs/ceph/messenger.c
@@ -120,6 +120,12 @@
 	destroy_workqueue(ceph_msgr_wq);
 }
 
+void ceph_msgr_flush()
+{
+	flush_workqueue(ceph_msgr_wq);
+}
+
+
 /*
  * socket callback functions
  */
diff --git a/fs/ceph/messenger.h b/fs/ceph/messenger.h
index 00a9430..76fbc95 100644
--- a/fs/ceph/messenger.h
+++ b/fs/ceph/messenger.h
@@ -213,6 +213,7 @@
 
 extern int ceph_msgr_init(void);
 extern void ceph_msgr_exit(void);
+extern void ceph_msgr_flush(void);
 
 extern struct ceph_messenger *ceph_messenger_create(
 	struct ceph_entity_addr *myaddr);
diff --git a/fs/ceph/mon_client.c b/fs/ceph/mon_client.c
index f6510a4..21c62e9 100644
--- a/fs/ceph/mon_client.c
+++ b/fs/ceph/mon_client.c
@@ -704,8 +704,11 @@
 			      struct ceph_msg *msg)
 {
 	int ret;
+	int was_auth = 0;
 
 	mutex_lock(&monc->mutex);
+	if (monc->auth->ops)
+		was_auth = monc->auth->ops->is_authenticated(monc->auth);
 	monc->pending_auth = 0;
 	ret = ceph_handle_auth_reply(monc->auth, msg->front.iov_base,
 				     msg->front.iov_len,
@@ -716,7 +719,7 @@
 		wake_up(&monc->client->auth_wq);
 	} else if (ret > 0) {
 		__send_prepared_auth_request(monc, ret);
-	} else if (monc->auth->ops->is_authenticated(monc->auth)) {
+	} else if (!was_auth && monc->auth->ops->is_authenticated(monc->auth)) {
 		dout("authenticated, starting session\n");
 
 		monc->client->msgr->inst.name.type = CEPH_ENTITY_TYPE_CLIENT;
diff --git a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c
index afa7bb3..d25b4ad 100644
--- a/fs/ceph/osd_client.c
+++ b/fs/ceph/osd_client.c
@@ -361,8 +361,13 @@
 {
 	dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref),
 	     atomic_read(&osd->o_ref) - 1);
-	if (atomic_dec_and_test(&osd->o_ref))
+	if (atomic_dec_and_test(&osd->o_ref)) {
+		struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth;
+
+		if (osd->o_authorizer)
+			ac->ops->destroy_authorizer(ac, osd->o_authorizer);
 		kfree(osd);
+	}
 }
 
 /*
diff --git a/fs/ceph/osdmap.c b/fs/ceph/osdmap.c
index cfdd8f4..ddc656f 100644
--- a/fs/ceph/osdmap.c
+++ b/fs/ceph/osdmap.c
@@ -706,7 +706,7 @@
 		     len, *p, end);
 		newcrush = crush_decode(*p, min(*p+len, end));
 		if (IS_ERR(newcrush))
-			return ERR_PTR(PTR_ERR(newcrush));
+			return ERR_CAST(newcrush);
 	}
 
 	/* new flags? */
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 7c663d9..4e0bee2 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -669,9 +669,17 @@
 
 	/* unmount */
 	ceph_mdsc_stop(&client->mdsc);
-	ceph_monc_stop(&client->monc);
 	ceph_osdc_stop(&client->osdc);
 
+	/*
+	 * make sure mds and osd connections close out before destroying
+	 * the auth module, which is needed to free those connections'
+	 * ceph_authorizers.
+	 */
+	ceph_msgr_flush();
+
+	ceph_monc_stop(&client->monc);
+
 	ceph_adjust_min_caps(-client->min_caps);
 
 	ceph_debugfs_client_cleanup(client);
@@ -738,7 +746,7 @@
 	dout("open_root_inode opening '%s'\n", path);
 	req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS);
 	if (IS_ERR(req))
-		return ERR_PTR(PTR_ERR(req));
+		return ERR_CAST(req);
 	req->r_path1 = kstrdup(path, GFP_NOFS);
 	req->r_ino1.ino = CEPH_INO_ROOT;
 	req->r_ino1.snap = CEPH_NOSNAP;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 3725c9e..10a4a40 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -10,7 +10,6 @@
 #include <linux/fs.h>
 #include <linux/mempool.h>
 #include <linux/pagemap.h>
-#include <linux/slab.h>
 #include <linux/wait.h>
 #include <linux/writeback.h>
 #include <linux/slab.h>
@@ -811,7 +810,7 @@
 
 extern void ceph_queue_caps_release(struct inode *inode);
 extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc);
-extern int ceph_fsync(struct file *file, struct dentry *dentry, int datasync);
+extern int ceph_fsync(struct file *file, int datasync);
 extern void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
 				    struct ceph_mds_session *session);
 extern int ceph_get_cap_mds(struct inode *inode);
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 0242ff9..a7eb65c 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -84,7 +84,7 @@
 extern ssize_t cifs_user_write(struct file *file, const char __user *write_data,
 			 size_t write_size, loff_t *poffset);
 extern int cifs_lock(struct file *, int, struct file_lock *);
-extern int cifs_fsync(struct file *, struct dentry *, int);
+extern int cifs_fsync(struct file *, int);
 extern int cifs_flush(struct file *, fl_owner_t id);
 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
 extern const struct file_operations cifs_dir_ops;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index a83541e..f1ff785 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1676,7 +1676,7 @@
 	return rc;
 }
 
-int cifs_fsync(struct file *file, struct dentry *dentry, int datasync)
+int cifs_fsync(struct file *file, int datasync)
 {
 	int xid;
 	int rc = 0;
@@ -1688,7 +1688,7 @@
 	xid = GetXid();
 
 	cFYI(1, "Sync file - name: %s datasync: 0x%x",
-		dentry->d_name.name, datasync);
+		file->f_path.dentry->d_name.name, datasync);
 
 	rc = filemap_write_and_wait(inode->i_mapping);
 	if (rc == 0) {
diff --git a/fs/coda/coda_int.h b/fs/coda/coda_int.h
index d99860a..6b443ff 100644
--- a/fs/coda/coda_int.h
+++ b/fs/coda/coda_int.h
@@ -11,8 +11,7 @@
 
 void coda_destroy_inodecache(void);
 int coda_init_inodecache(void);
-int coda_fsync(struct file *coda_file, struct dentry *coda_dentry,
-	       int datasync);
+int coda_fsync(struct file *coda_file, int datasync);
 void coda_sysctl_init(void);
 void coda_sysctl_clean(void);
 
diff --git a/fs/coda/file.c b/fs/coda/file.c
index 7196077..ad3cd2a 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -202,10 +202,10 @@
 	return 0;
 }
 
-int coda_fsync(struct file *coda_file, struct dentry *coda_dentry, int datasync)
+int coda_fsync(struct file *coda_file, int datasync)
 {
 	struct file *host_file;
-	struct inode *coda_inode = coda_dentry->d_inode;
+	struct inode *coda_inode = coda_file->f_path.dentry->d_inode;
 	struct coda_file_info *cfi;
 	int err = 0;
 
diff --git a/fs/compat.c b/fs/compat.c
index 0544873..f0b391c 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -568,6 +568,79 @@
 	return ret;
 }
 
+/* A write operation does a read from user space and vice versa */
+#define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ)
+
+ssize_t compat_rw_copy_check_uvector(int type,
+		const struct compat_iovec __user *uvector, unsigned long nr_segs,
+		unsigned long fast_segs, struct iovec *fast_pointer,
+		struct iovec **ret_pointer)
+{
+	compat_ssize_t tot_len;
+	struct iovec *iov = *ret_pointer = fast_pointer;
+	ssize_t ret = 0;
+	int seg;
+
+	/*
+	 * SuS says "The readv() function *may* fail if the iovcnt argument
+	 * was less than or equal to 0, or greater than {IOV_MAX}.  Linux has
+	 * traditionally returned zero for zero segments, so...
+	 */
+	if (nr_segs == 0)
+		goto out;
+
+	ret = -EINVAL;
+	if (nr_segs > UIO_MAXIOV || nr_segs < 0)
+		goto out;
+	if (nr_segs > fast_segs) {
+		ret = -ENOMEM;
+		iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
+		if (iov == NULL) {
+			*ret_pointer = fast_pointer;
+			goto out;
+		}
+	}
+	*ret_pointer = iov;
+
+	/*
+	 * Single unix specification:
+	 * We should -EINVAL if an element length is not >= 0 and fitting an
+	 * ssize_t.  The total length is fitting an ssize_t
+	 *
+	 * Be careful here because iov_len is a size_t not an ssize_t
+	 */
+	tot_len = 0;
+	ret = -EINVAL;
+	for (seg = 0; seg < nr_segs; seg++) {
+		compat_ssize_t tmp = tot_len;
+		compat_uptr_t buf;
+		compat_ssize_t len;
+
+		if (__get_user(len, &uvector->iov_len) ||
+		   __get_user(buf, &uvector->iov_base)) {
+			ret = -EFAULT;
+			goto out;
+		}
+		if (len < 0)	/* size_t not fitting in compat_ssize_t .. */
+			goto out;
+		tot_len += len;
+		if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
+			goto out;
+		if (!access_ok(vrfy_dir(type), buf, len)) {
+			ret = -EFAULT;
+			goto out;
+		}
+		iov->iov_base = compat_ptr(buf);
+		iov->iov_len = (compat_size_t) len;
+		uvector++;
+		iov++;
+	}
+	ret = tot_len;
+
+out:
+	return ret;
+}
+
 static inline long
 copy_iocb(long nr, u32 __user *ptr32, struct iocb __user * __user *ptr64)
 {
@@ -600,7 +673,7 @@
 	iocb64 = compat_alloc_user_space(nr * sizeof(*iocb64));
 	ret = copy_iocb(nr, iocb, iocb64);
 	if (!ret)
-		ret = sys_io_submit(ctx_id, nr, iocb64);
+		ret = do_io_submit(ctx_id, nr, iocb64, 1);
 	return ret;
 }
 
@@ -1077,70 +1150,21 @@
 {
 	compat_ssize_t tot_len;
 	struct iovec iovstack[UIO_FASTIOV];
-	struct iovec *iov=iovstack, *vector;
+	struct iovec *iov;
 	ssize_t ret;
-	int seg;
 	io_fn_t fn;
 	iov_fn_t fnv;
 
-	/*
-	 * SuS says "The readv() function *may* fail if the iovcnt argument
-	 * was less than or equal to 0, or greater than {IOV_MAX}.  Linux has
-	 * traditionally returned zero for zero segments, so...
-	 */
-	ret = 0;
-	if (nr_segs == 0)
-		goto out;
-
-	/*
-	 * First get the "struct iovec" from user memory and
-	 * verify all the pointers
-	 */
 	ret = -EINVAL;
-	if ((nr_segs > UIO_MAXIOV) || (nr_segs <= 0))
-		goto out;
 	if (!file->f_op)
 		goto out;
-	if (nr_segs > UIO_FASTIOV) {
-		ret = -ENOMEM;
-		iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
-		if (!iov)
-			goto out;
-	}
+
 	ret = -EFAULT;
 	if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
 		goto out;
 
-	/*
-	 * Single unix specification:
-	 * We should -EINVAL if an element length is not >= 0 and fitting an
-	 * ssize_t.  The total length is fitting an ssize_t
-	 *
-	 * Be careful here because iov_len is a size_t not an ssize_t
-	 */
-	tot_len = 0;
-	vector = iov;
-	ret = -EINVAL;
-	for (seg = 0 ; seg < nr_segs; seg++) {
-		compat_ssize_t tmp = tot_len;
-		compat_ssize_t len;
-		compat_uptr_t buf;
-
-		if (__get_user(len, &uvector->iov_len) ||
-		    __get_user(buf, &uvector->iov_base)) {
-			ret = -EFAULT;
-			goto out;
-		}
-		if (len < 0)	/* size_t not fitting an compat_ssize_t .. */
-			goto out;
-		tot_len += len;
-		if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
-			goto out;
-		vector->iov_base = compat_ptr(buf);
-		vector->iov_len = (compat_size_t) len;
-		uvector++;
-		vector++;
-	}
+	tot_len = compat_rw_copy_check_uvector(type, uvector, nr_segs,
+					       UIO_FASTIOV, iovstack, &iov);
 	if (tot_len == 0) {
 		ret = 0;
 		goto out;
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index c8af2d9..4164514 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -72,16 +72,11 @@
 	if (!sd)
 		return -EINVAL;
 
+	error = simple_setattr(dentry, iattr);
+	if (error)
+		return error;
+
 	sd_iattr = sd->s_iattr;
-
-	error = inode_change_ok(inode, iattr);
-	if (error)
-		return error;
-
-	error = inode_setattr(inode, iattr);
-	if (error)
-		return error;
-
 	if (!sd_iattr) {
 		/* setting attributes for the first time, allocate now */
 		sd_iattr = kzalloc(sizeof(struct iattr), GFP_KERNEL);
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 4d74fc7..0210898 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -277,8 +277,10 @@
 DEFINE_SIMPLE_ATTRIBUTE(fops_x32_ro, debugfs_u32_get, NULL, "0x%08llx\n");
 DEFINE_SIMPLE_ATTRIBUTE(fops_x32_wo, NULL, debugfs_u32_set, "0x%08llx\n");
 
+DEFINE_SIMPLE_ATTRIBUTE(fops_x64, debugfs_u64_get, debugfs_u64_set, "0x%016llx\n");
+
 /*
- * debugfs_create_x{8,16,32} - create a debugfs file that is used to read and write an unsigned {8,16,32}-bit value
+ * debugfs_create_x{8,16,32,64} - create a debugfs file that is used to read and write an unsigned {8,16,32,64}-bit value
  *
  * These functions are exactly the same as the above functions (but use a hex
  * output for the decimal challenged). For details look at the above unsigned
@@ -357,6 +359,23 @@
 }
 EXPORT_SYMBOL_GPL(debugfs_create_x32);
 
+/**
+ * debugfs_create_x64 - create a debugfs file that is used to read and write an unsigned 64-bit value
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file.  This should be a
+ *          directory dentry if set.  If this parameter is %NULL, then the
+ *          file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ *         from.
+ */
+struct dentry *debugfs_create_x64(const char *name, mode_t mode,
+				 struct dentry *parent, u64 *value)
+{
+	return debugfs_create_file(name, mode, parent, value, &fops_x64);
+}
+EXPORT_SYMBOL_GPL(debugfs_create_x64);
+
 
 static int debugfs_size_t_set(void *data, u64 val)
 {
diff --git a/fs/direct-io.c b/fs/direct-io.c
index e82adc2..7600aac 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -82,6 +82,8 @@
 	int reap_counter;		/* rate limit reaping */
 	get_block_t *get_block;		/* block mapping function */
 	dio_iodone_t *end_io;		/* IO completion function */
+	dio_submit_t *submit_io;	/* IO submition function */
+	loff_t logical_offset_in_bio;	/* current first logical block in bio */
 	sector_t final_block_in_bio;	/* current final block in bio + 1 */
 	sector_t next_block_for_io;	/* next block to be put under IO,
 					   in dio_blocks units */
@@ -96,6 +98,7 @@
 	unsigned cur_page_offset;	/* Offset into it, in bytes */
 	unsigned cur_page_len;		/* Nr of bytes at cur_page_offset */
 	sector_t cur_page_block;	/* Where it starts */
+	loff_t cur_page_fs_offset;	/* Offset in file */
 
 	/* BIO completion state */
 	spinlock_t bio_lock;		/* protects BIO fields below */
@@ -300,6 +303,26 @@
 	spin_unlock_irqrestore(&dio->bio_lock, flags);
 }
 
+/**
+ * dio_end_io - handle the end io action for the given bio
+ * @bio: The direct io bio thats being completed
+ * @error: Error if there was one
+ *
+ * This is meant to be called by any filesystem that uses their own dio_submit_t
+ * so that the DIO specific endio actions are dealt with after the filesystem
+ * has done it's completion work.
+ */
+void dio_end_io(struct bio *bio, int error)
+{
+	struct dio *dio = bio->bi_private;
+
+	if (dio->is_async)
+		dio_bio_end_aio(bio, error);
+	else
+		dio_bio_end_io(bio, error);
+}
+EXPORT_SYMBOL_GPL(dio_end_io);
+
 static int
 dio_bio_alloc(struct dio *dio, struct block_device *bdev,
 		sector_t first_sector, int nr_vecs)
@@ -316,6 +339,7 @@
 		bio->bi_end_io = dio_bio_end_io;
 
 	dio->bio = bio;
+	dio->logical_offset_in_bio = dio->cur_page_fs_offset;
 	return 0;
 }
 
@@ -340,10 +364,15 @@
 	if (dio->is_async && dio->rw == READ)
 		bio_set_pages_dirty(bio);
 
-	submit_bio(dio->rw, bio);
+	if (dio->submit_io)
+		dio->submit_io(dio->rw, bio, dio->inode,
+			       dio->logical_offset_in_bio);
+	else
+		submit_bio(dio->rw, bio);
 
 	dio->bio = NULL;
 	dio->boundary = 0;
+	dio->logical_offset_in_bio = 0;
 }
 
 /*
@@ -603,10 +632,26 @@
 	int ret = 0;
 
 	if (dio->bio) {
+		loff_t cur_offset = dio->block_in_file << dio->blkbits;
+		loff_t bio_next_offset = dio->logical_offset_in_bio +
+			dio->bio->bi_size;
+
 		/*
-		 * See whether this new request is contiguous with the old
+		 * See whether this new request is contiguous with the old.
+		 *
+		 * Btrfs cannot handl having logically non-contiguous requests
+		 * submitted.  For exmple if you have
+		 *
+		 * Logical:  [0-4095][HOLE][8192-12287]
+		 * Phyiscal: [0-4095]      [4096-8181]
+		 *
+		 * We cannot submit those pages together as one BIO.  So if our
+		 * current logical offset in the file does not equal what would
+		 * be the next logical offset in the bio, submit the bio we
+		 * have.
 		 */
-		if (dio->final_block_in_bio != dio->cur_page_block)
+		if (dio->final_block_in_bio != dio->cur_page_block ||
+		    cur_offset != bio_next_offset)
 			dio_bio_submit(dio);
 		/*
 		 * Submit now if the underlying fs is about to perform a
@@ -701,6 +746,7 @@
 	dio->cur_page_offset = offset;
 	dio->cur_page_len = len;
 	dio->cur_page_block = blocknr;
+	dio->cur_page_fs_offset = dio->block_in_file << dio->blkbits;
 out:
 	return ret;
 }
@@ -935,7 +981,7 @@
 direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode, 
 	const struct iovec *iov, loff_t offset, unsigned long nr_segs, 
 	unsigned blkbits, get_block_t get_block, dio_iodone_t end_io,
-	struct dio *dio)
+	dio_submit_t submit_io, struct dio *dio)
 {
 	unsigned long user_addr; 
 	unsigned long flags;
@@ -952,6 +998,7 @@
 
 	dio->get_block = get_block;
 	dio->end_io = end_io;
+	dio->submit_io = submit_io;
 	dio->final_block_in_bio = -1;
 	dio->next_block_for_io = -1;
 
@@ -1008,7 +1055,7 @@
 		}
 	} /* end iovec loop */
 
-	if (ret == -ENOTBLK && (rw & WRITE)) {
+	if (ret == -ENOTBLK) {
 		/*
 		 * The remaining part of the request will be
 		 * be handled by buffered I/O when we return
@@ -1087,30 +1134,11 @@
 	return ret;
 }
 
-/*
- * This is a library function for use by filesystem drivers.
- *
- * The locking rules are governed by the flags parameter:
- *  - if the flags value contains DIO_LOCKING we use a fancy locking
- *    scheme for dumb filesystems.
- *    For writes this function is called under i_mutex and returns with
- *    i_mutex held, for reads, i_mutex is not held on entry, but it is
- *    taken and dropped again before returning.
- *    For reads and writes i_alloc_sem is taken in shared mode and released
- *    on I/O completion (which may happen asynchronously after returning to
- *    the caller).
- *
- *  - if the flags value does NOT contain DIO_LOCKING we don't use any
- *    internal locking but rather rely on the filesystem to synchronize
- *    direct I/O reads/writes versus each other and truncate.
- *    For reads and writes both i_mutex and i_alloc_sem are not held on
- *    entry and are never taken.
- */
 ssize_t
-__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
+__blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb, struct inode *inode,
 	struct block_device *bdev, const struct iovec *iov, loff_t offset, 
 	unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
-	int flags)
+	dio_submit_t submit_io,	int flags)
 {
 	int seg;
 	size_t size;
@@ -1197,11 +1225,49 @@
 		(end > i_size_read(inode)));
 
 	retval = direct_io_worker(rw, iocb, inode, iov, offset,
-				nr_segs, blkbits, get_block, end_io, dio);
+				nr_segs, blkbits, get_block, end_io,
+				submit_io, dio);
 
+out:
+	return retval;
+}
+EXPORT_SYMBOL(__blockdev_direct_IO_newtrunc);
+
+/*
+ * This is a library function for use by filesystem drivers.
+ *
+ * The locking rules are governed by the flags parameter:
+ *  - if the flags value contains DIO_LOCKING we use a fancy locking
+ *    scheme for dumb filesystems.
+ *    For writes this function is called under i_mutex and returns with
+ *    i_mutex held, for reads, i_mutex is not held on entry, but it is
+ *    taken and dropped again before returning.
+ *    For reads and writes i_alloc_sem is taken in shared mode and released
+ *    on I/O completion (which may happen asynchronously after returning to
+ *    the caller).
+ *
+ *  - if the flags value does NOT contain DIO_LOCKING we don't use any
+ *    internal locking but rather rely on the filesystem to synchronize
+ *    direct I/O reads/writes versus each other and truncate.
+ *    For reads and writes both i_mutex and i_alloc_sem are not held on
+ *    entry and are never taken.
+ */
+ssize_t
+__blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
+	struct block_device *bdev, const struct iovec *iov, loff_t offset,
+	unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
+	dio_submit_t submit_io,	int flags)
+{
+	ssize_t retval;
+
+	retval = __blockdev_direct_IO_newtrunc(rw, iocb, inode, bdev, iov,
+			offset, nr_segs, get_block, end_io, submit_io, flags);
 	/*
 	 * In case of error extending write may have instantiated a few
 	 * blocks outside i_size. Trim these off again for DIO_LOCKING.
+	 * NOTE: DIO_NO_LOCK/DIO_OWN_LOCK callers have to handle this in
+	 * their own manner. This is a further example of where the old
+	 * truncate sequence is inadequate.
 	 *
 	 * NOTE: filesystems with their own locking have to handle this
 	 * on their own.
@@ -1209,12 +1275,13 @@
 	if (flags & DIO_LOCKING) {
 		if (unlikely((rw & WRITE) && retval < 0)) {
 			loff_t isize = i_size_read(inode);
+			loff_t end = offset + iov_length(iov, nr_segs);
+
 			if (end > isize)
 				vmtruncate(inode, isize);
 		}
 	}
 
-out:
 	return retval;
 }
 EXPORT_SYMBOL(__blockdev_direct_IO);
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 3bdddbc..e8fcf4e 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -274,7 +274,7 @@
 }
 
 static int
-ecryptfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+ecryptfs_fsync(struct file *file, int datasync)
 {
 	return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
 }
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 65dee2f..31ef525 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -805,7 +805,7 @@
 				    - (ia->ia_size & ~PAGE_CACHE_MASK));
 
 		if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
-			rc = vmtruncate(inode, ia->ia_size);
+			rc = simple_setsize(inode, ia->ia_size);
 			if (rc)
 				goto out;
 			lower_ia->ia_size = ia->ia_size;
@@ -830,7 +830,7 @@
 				goto out;
 			}
 		}
-		vmtruncate(inode, ia->ia_size);
+		simple_setsize(inode, ia->ia_size);
 		rc = ecryptfs_write_inode_size_to_metadata(inode);
 		if (rc) {
 			printk(KERN_ERR	"Problem with "
diff --git a/fs/exec.c b/fs/exec.c
index 9badbc0..e19de6a 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -768,7 +768,6 @@
 	struct signal_struct *sig = tsk->signal;
 	struct sighand_struct *oldsighand = tsk->sighand;
 	spinlock_t *lock = &oldsighand->siglock;
-	int count;
 
 	if (thread_group_empty(tsk))
 		goto no_thread_group;
@@ -785,13 +784,13 @@
 		spin_unlock_irq(lock);
 		return -EAGAIN;
 	}
-	sig->group_exit_task = tsk;
-	zap_other_threads(tsk);
 
-	/* Account for the thread group leader hanging around: */
-	count = thread_group_leader(tsk) ? 1 : 2;
-	sig->notify_count = count;
-	while (atomic_read(&sig->count) > count) {
+	sig->group_exit_task = tsk;
+	sig->notify_count = zap_other_threads(tsk);
+	if (!thread_group_leader(tsk))
+		sig->notify_count--;
+
+	while (sig->notify_count) {
 		__set_current_state(TASK_UNINTERRUPTIBLE);
 		spin_unlock_irq(lock);
 		schedule();
@@ -1662,12 +1661,15 @@
 	struct task_struct *tsk = current;
 	struct mm_struct *mm = tsk->mm;
 	struct completion *vfork_done;
-	int core_waiters;
+	int core_waiters = -EBUSY;
 
 	init_completion(&core_state->startup);
 	core_state->dumper.task = tsk;
 	core_state->dumper.next = NULL;
-	core_waiters = zap_threads(tsk, mm, core_state, exit_code);
+
+	down_write(&mm->mmap_sem);
+	if (!mm->core_state)
+		core_waiters = zap_threads(tsk, mm, core_state, exit_code);
 	up_write(&mm->mmap_sem);
 
 	if (unlikely(core_waiters < 0))
@@ -1787,21 +1789,61 @@
 }
 
 
+/*
+ * uhm_pipe_setup
+ * helper function to customize the process used
+ * to collect the core in userspace.  Specifically
+ * it sets up a pipe and installs it as fd 0 (stdin)
+ * for the process.  Returns 0 on success, or
+ * PTR_ERR on failure.
+ * Note that it also sets the core limit to 1.  This
+ * is a special value that we use to trap recursive
+ * core dumps
+ */
+static int umh_pipe_setup(struct subprocess_info *info)
+{
+	struct file *rp, *wp;
+	struct fdtable *fdt;
+	struct coredump_params *cp = (struct coredump_params *)info->data;
+	struct files_struct *cf = current->files;
+
+	wp = create_write_pipe(0);
+	if (IS_ERR(wp))
+		return PTR_ERR(wp);
+
+	rp = create_read_pipe(wp, 0);
+	if (IS_ERR(rp)) {
+		free_write_pipe(wp);
+		return PTR_ERR(rp);
+	}
+
+	cp->file = wp;
+
+	sys_close(0);
+	fd_install(0, rp);
+	spin_lock(&cf->file_lock);
+	fdt = files_fdtable(cf);
+	FD_SET(0, fdt->open_fds);
+	FD_CLR(0, fdt->close_on_exec);
+	spin_unlock(&cf->file_lock);
+
+	/* and disallow core files too */
+	current->signal->rlim[RLIMIT_CORE] = (struct rlimit){1, 1};
+
+	return 0;
+}
+
 void do_coredump(long signr, int exit_code, struct pt_regs *regs)
 {
 	struct core_state core_state;
 	char corename[CORENAME_MAX_SIZE + 1];
 	struct mm_struct *mm = current->mm;
 	struct linux_binfmt * binfmt;
-	struct inode * inode;
 	const struct cred *old_cred;
 	struct cred *cred;
 	int retval = 0;
 	int flag = 0;
-	int ispipe = 0;
-	char **helper_argv = NULL;
-	int helper_argc = 0;
-	int dump_count = 0;
+	int ispipe;
 	static atomic_t core_dump_count = ATOMIC_INIT(0);
 	struct coredump_params cprm = {
 		.signr = signr,
@@ -1820,23 +1862,12 @@
 	binfmt = mm->binfmt;
 	if (!binfmt || !binfmt->core_dump)
 		goto fail;
+	if (!__get_dumpable(cprm.mm_flags))
+		goto fail;
 
 	cred = prepare_creds();
-	if (!cred) {
-		retval = -ENOMEM;
+	if (!cred)
 		goto fail;
-	}
-
-	down_write(&mm->mmap_sem);
-	/*
-	 * If another thread got here first, or we are not dumpable, bail out.
-	 */
-	if (mm->core_state || !__get_dumpable(cprm.mm_flags)) {
-		up_write(&mm->mmap_sem);
-		put_cred(cred);
-		goto fail;
-	}
-
 	/*
 	 *	We cannot trust fsuid as being the "true" uid of the
 	 *	process nor do we know its entire history. We only know it
@@ -1849,10 +1880,8 @@
 	}
 
 	retval = coredump_wait(exit_code, &core_state);
-	if (retval < 0) {
-		put_cred(cred);
-		goto fail;
-	}
+	if (retval < 0)
+		goto fail_creds;
 
 	old_cred = override_creds(cred);
 
@@ -1870,19 +1899,19 @@
 	ispipe = format_corename(corename, signr);
 	unlock_kernel();
 
-	if ((!ispipe) && (cprm.limit < binfmt->min_coredump))
-		goto fail_unlock;
-
  	if (ispipe) {
-		if (cprm.limit == 0) {
+		int dump_count;
+		char **helper_argv;
+
+		if (cprm.limit == 1) {
 			/*
 			 * Normally core limits are irrelevant to pipes, since
 			 * we're not writing to the file system, but we use
-			 * cprm.limit of 0 here as a speacial value. Any
-			 * non-zero limit gets set to RLIM_INFINITY below, but
+			 * cprm.limit of 1 here as a speacial value. Any
+			 * non-1 limit gets set to RLIM_INFINITY below, but
 			 * a limit of 0 skips the dump.  This is a consistent
 			 * way to catch recursive crashes.  We can still crash
-			 * if the core_pattern binary sets RLIM_CORE =  !0
+			 * if the core_pattern binary sets RLIM_CORE =  !1
 			 * but it runs as root, and can do lots of stupid things
 			 * Note that we use task_tgid_vnr here to grab the pid
 			 * of the process group leader.  That way we get the
@@ -1890,11 +1919,12 @@
 			 * core_pattern process dies.
 			 */
 			printk(KERN_WARNING
-				"Process %d(%s) has RLIMIT_CORE set to 0\n",
+				"Process %d(%s) has RLIMIT_CORE set to 1\n",
 				task_tgid_vnr(current), current->comm);
 			printk(KERN_WARNING "Aborting core\n");
 			goto fail_unlock;
 		}
+		cprm.limit = RLIM_INFINITY;
 
 		dump_count = atomic_inc_return(&core_dump_count);
 		if (core_pipe_limit && (core_pipe_limit < dump_count)) {
@@ -1904,71 +1934,74 @@
 			goto fail_dropcount;
 		}
 
-		helper_argv = argv_split(GFP_KERNEL, corename+1, &helper_argc);
+		helper_argv = argv_split(GFP_KERNEL, corename+1, NULL);
 		if (!helper_argv) {
 			printk(KERN_WARNING "%s failed to allocate memory\n",
 			       __func__);
 			goto fail_dropcount;
 		}
 
-		cprm.limit = RLIM_INFINITY;
-
-		/* SIGPIPE can happen, but it's just never processed */
-		if (call_usermodehelper_pipe(helper_argv[0], helper_argv, NULL,
-				&cprm.file)) {
+		retval = call_usermodehelper_fns(helper_argv[0], helper_argv,
+					NULL, UMH_WAIT_EXEC, umh_pipe_setup,
+					NULL, &cprm);
+		argv_free(helper_argv);
+		if (retval) {
  			printk(KERN_INFO "Core dump to %s pipe failed\n",
 			       corename);
-			goto fail_dropcount;
+			goto close_fail;
  		}
- 	} else
+	} else {
+		struct inode *inode;
+
+		if (cprm.limit < binfmt->min_coredump)
+			goto fail_unlock;
+
 		cprm.file = filp_open(corename,
 				 O_CREAT | 2 | O_NOFOLLOW | O_LARGEFILE | flag,
 				 0600);
-	if (IS_ERR(cprm.file))
-		goto fail_dropcount;
-	inode = cprm.file->f_path.dentry->d_inode;
-	if (inode->i_nlink > 1)
-		goto close_fail;	/* multiple links - don't dump */
-	if (!ispipe && d_unhashed(cprm.file->f_path.dentry))
-		goto close_fail;
+		if (IS_ERR(cprm.file))
+			goto fail_unlock;
 
-	/* AK: actually i see no reason to not allow this for named pipes etc.,
-	   but keep the previous behaviour for now. */
-	if (!ispipe && !S_ISREG(inode->i_mode))
-		goto close_fail;
-	/*
-	 * Dont allow local users get cute and trick others to coredump
-	 * into their pre-created files:
-	 * Note, this is not relevant for pipes
-	 */
-	if (!ispipe && (inode->i_uid != current_fsuid()))
-		goto close_fail;
-	if (!cprm.file->f_op)
-		goto close_fail;
-	if (!cprm.file->f_op->write)
-		goto close_fail;
-	if (!ispipe &&
-	    do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file) != 0)
-		goto close_fail;
+		inode = cprm.file->f_path.dentry->d_inode;
+		if (inode->i_nlink > 1)
+			goto close_fail;
+		if (d_unhashed(cprm.file->f_path.dentry))
+			goto close_fail;
+		/*
+		 * AK: actually i see no reason to not allow this for named
+		 * pipes etc, but keep the previous behaviour for now.
+		 */
+		if (!S_ISREG(inode->i_mode))
+			goto close_fail;
+		/*
+		 * Dont allow local users get cute and trick others to coredump
+		 * into their pre-created files.
+		 */
+		if (inode->i_uid != current_fsuid())
+			goto close_fail;
+		if (!cprm.file->f_op || !cprm.file->f_op->write)
+			goto close_fail;
+		if (do_truncate(cprm.file->f_path.dentry, 0, 0, cprm.file))
+			goto close_fail;
+	}
 
 	retval = binfmt->core_dump(&cprm);
-
 	if (retval)
 		current->signal->group_exit_code |= 0x80;
-close_fail:
+
 	if (ispipe && core_pipe_limit)
 		wait_for_dump_helpers(cprm.file);
-	filp_close(cprm.file, NULL);
+close_fail:
+	if (cprm.file)
+		filp_close(cprm.file, NULL);
 fail_dropcount:
-	if (dump_count)
+	if (ispipe)
 		atomic_dec(&core_dump_count);
 fail_unlock:
-	if (helper_argv)
-		argv_free(helper_argv);
-
-	revert_creds(old_cred);
-	put_cred(cred);
 	coredump_finish(mm);
+	revert_creds(old_cred);
+fail_creds:
+	put_cred(cred);
 fail:
 	return;
 }
diff --git a/fs/exofs/file.c b/fs/exofs/file.c
index 839b9dc..fef6899 100644
--- a/fs/exofs/file.c
+++ b/fs/exofs/file.c
@@ -40,12 +40,11 @@
 	return 0;
 }
 
-static int exofs_file_fsync(struct file *filp, struct dentry *dentry,
-			    int datasync)
+static int exofs_file_fsync(struct file *filp, int datasync)
 {
 	int ret;
 	struct address_space *mapping = filp->f_mapping;
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = mapping->host;
 	struct super_block *sb;
 
 	ret = filemap_write_and_wait(mapping);
@@ -66,7 +65,7 @@
 
 static int exofs_flush(struct file *file, fl_owner_t id)
 {
-	exofs_file_fsync(file, file->f_path.dentry, 1);
+	exofs_file_fsync(file, 1);
 	/* TODO: Flush the OSD target */
 	return 0;
 }
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 0b038e4..52b34f1 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -122,7 +122,6 @@
 extern void ext2_delete_inode (struct inode *);
 extern int ext2_sync_inode (struct inode *);
 extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
-extern void ext2_truncate (struct inode *);
 extern int ext2_setattr (struct dentry *, struct iattr *);
 extern void ext2_set_inode_flags(struct inode *inode);
 extern void ext2_get_inode_flags(struct ext2_inode_info *);
@@ -155,7 +154,7 @@
 extern const struct file_operations ext2_dir_operations;
 
 /* file.c */
-extern int ext2_fsync(struct file *file, struct dentry *dentry, int datasync);
+extern int ext2_fsync(struct file *file, int datasync);
 extern const struct inode_operations ext2_file_inode_operations;
 extern const struct file_operations ext2_file_operations;
 extern const struct file_operations ext2_xip_file_operations;
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 5d198d0..49eec94 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -40,13 +40,13 @@
 	return 0;
 }
 
-int ext2_fsync(struct file *file, struct dentry *dentry, int datasync)
+int ext2_fsync(struct file *file, int datasync)
 {
 	int ret;
-	struct super_block *sb = dentry->d_inode->i_sb;
+	struct super_block *sb = file->f_mapping->host->i_sb;
 	struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
 
-	ret = simple_fsync(file, dentry, datasync);
+	ret = generic_file_fsync(file, datasync);
 	if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) {
 		/* We don't really know where the IO error happened... */
 		ext2_error(sb, __func__,
@@ -95,7 +95,6 @@
 #endif
 
 const struct inode_operations ext2_file_inode_operations = {
-	.truncate	= ext2_truncate,
 #ifdef CONFIG_EXT2_FS_XATTR
 	.setxattr	= generic_setxattr,
 	.getxattr	= generic_getxattr,
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 527c46d..1921443 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -54,6 +54,18 @@
 		inode->i_blocks - ea_blocks == 0);
 }
 
+static void ext2_truncate_blocks(struct inode *inode, loff_t offset);
+
+static void ext2_write_failed(struct address_space *mapping, loff_t to)
+{
+	struct inode *inode = mapping->host;
+
+	if (to > inode->i_size) {
+		truncate_pagecache(inode, to, inode->i_size);
+		ext2_truncate_blocks(inode, inode->i_size);
+	}
+}
+
 /*
  * Called at the last iput() if i_nlink is zero.
  */
@@ -71,7 +83,7 @@
 
 	inode->i_size = 0;
 	if (inode->i_blocks)
-		ext2_truncate (inode);
+		ext2_truncate_blocks(inode, 0);
 	ext2_free_inode (inode);
 
 	return;
@@ -757,8 +769,8 @@
 		loff_t pos, unsigned len, unsigned flags,
 		struct page **pagep, void **fsdata)
 {
-	return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-							ext2_get_block);
+	return block_write_begin_newtrunc(file, mapping, pos, len, flags,
+					pagep, fsdata, ext2_get_block);
 }
 
 static int
@@ -766,8 +778,25 @@
 		loff_t pos, unsigned len, unsigned flags,
 		struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	*pagep = NULL;
-	return __ext2_write_begin(file, mapping, pos, len, flags, pagep,fsdata);
+	ret = __ext2_write_begin(file, mapping, pos, len, flags, pagep, fsdata);
+	if (ret < 0)
+		ext2_write_failed(mapping, pos + len);
+	return ret;
+}
+
+static int ext2_write_end(struct file *file, struct address_space *mapping,
+			loff_t pos, unsigned len, unsigned copied,
+			struct page *page, void *fsdata)
+{
+	int ret;
+
+	ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+	if (ret < len)
+		ext2_write_failed(mapping, pos + len);
+	return ret;
 }
 
 static int
@@ -775,13 +804,18 @@
 		loff_t pos, unsigned len, unsigned flags,
 		struct page **pagep, void **fsdata)
 {
+	int ret;
+
 	/*
 	 * Dir-in-pagecache still uses ext2_write_begin. Would have to rework
 	 * directory handling code to pass around offsets rather than struct
 	 * pages in order to make this work easily.
 	 */
-	return nobh_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-							ext2_get_block);
+	ret = nobh_write_begin_newtrunc(file, mapping, pos, len, flags, pagep,
+						fsdata, ext2_get_block);
+	if (ret < 0)
+		ext2_write_failed(mapping, pos + len);
+	return ret;
 }
 
 static int ext2_nobh_writepage(struct page *page,
@@ -800,10 +834,15 @@
 			loff_t offset, unsigned long nr_segs)
 {
 	struct file *file = iocb->ki_filp;
-	struct inode *inode = file->f_mapping->host;
+	struct address_space *mapping = file->f_mapping;
+	struct inode *inode = mapping->host;
+	ssize_t ret;
 
-	return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
-				offset, nr_segs, ext2_get_block, NULL);
+	ret = blockdev_direct_IO_newtrunc(rw, iocb, inode, inode->i_sb->s_bdev,
+				iov, offset, nr_segs, ext2_get_block, NULL);
+	if (ret < 0 && (rw & WRITE))
+		ext2_write_failed(mapping, offset + iov_length(iov, nr_segs));
+	return ret;
 }
 
 static int
@@ -818,7 +857,7 @@
 	.writepage		= ext2_writepage,
 	.sync_page		= block_sync_page,
 	.write_begin		= ext2_write_begin,
-	.write_end		= generic_write_end,
+	.write_end		= ext2_write_end,
 	.bmap			= ext2_bmap,
 	.direct_IO		= ext2_direct_IO,
 	.writepages		= ext2_writepages,
@@ -1027,7 +1066,7 @@
 		ext2_free_data(inode, p, q);
 }
 
-void ext2_truncate(struct inode *inode)
+static void __ext2_truncate_blocks(struct inode *inode, loff_t offset)
 {
 	__le32 *i_data = EXT2_I(inode)->i_data;
 	struct ext2_inode_info *ei = EXT2_I(inode);
@@ -1039,27 +1078,8 @@
 	int n;
 	long iblock;
 	unsigned blocksize;
-
-	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
-	    S_ISLNK(inode->i_mode)))
-		return;
-	if (ext2_inode_is_fast_symlink(inode))
-		return;
-	if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
-		return;
-
 	blocksize = inode->i_sb->s_blocksize;
-	iblock = (inode->i_size + blocksize-1)
-					>> EXT2_BLOCK_SIZE_BITS(inode->i_sb);
-
-	if (mapping_is_xip(inode->i_mapping))
-		xip_truncate_page(inode->i_mapping, inode->i_size);
-	else if (test_opt(inode->i_sb, NOBH))
-		nobh_truncate_page(inode->i_mapping,
-				inode->i_size, ext2_get_block);
-	else
-		block_truncate_page(inode->i_mapping,
-				inode->i_size, ext2_get_block);
+	iblock = (offset + blocksize-1) >> EXT2_BLOCK_SIZE_BITS(inode->i_sb);
 
 	n = ext2_block_to_path(inode, iblock, offsets, NULL);
 	if (n == 0)
@@ -1127,6 +1147,62 @@
 	ext2_discard_reservation(inode);
 
 	mutex_unlock(&ei->truncate_mutex);
+}
+
+static void ext2_truncate_blocks(struct inode *inode, loff_t offset)
+{
+	/*
+	 * XXX: it seems like a bug here that we don't allow
+	 * IS_APPEND inode to have blocks-past-i_size trimmed off.
+	 * review and fix this.
+	 *
+	 * Also would be nice to be able to handle IO errors and such,
+	 * but that's probably too much to ask.
+	 */
+	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+	    S_ISLNK(inode->i_mode)))
+		return;
+	if (ext2_inode_is_fast_symlink(inode))
+		return;
+	if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+		return;
+	__ext2_truncate_blocks(inode, offset);
+}
+
+int ext2_setsize(struct inode *inode, loff_t newsize)
+{
+	loff_t oldsize;
+	int error;
+
+	error = inode_newsize_ok(inode, newsize);
+	if (error)
+		return error;
+
+	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+	    S_ISLNK(inode->i_mode)))
+		return -EINVAL;
+	if (ext2_inode_is_fast_symlink(inode))
+		return -EINVAL;
+	if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+		return -EPERM;
+
+	if (mapping_is_xip(inode->i_mapping))
+		error = xip_truncate_page(inode->i_mapping, newsize);
+	else if (test_opt(inode->i_sb, NOBH))
+		error = nobh_truncate_page(inode->i_mapping,
+				newsize, ext2_get_block);
+	else
+		error = block_truncate_page(inode->i_mapping,
+				newsize, ext2_get_block);
+	if (error)
+		return error;
+
+	oldsize = inode->i_size;
+	i_size_write(inode, newsize);
+	truncate_pagecache(inode, oldsize, newsize);
+
+	__ext2_truncate_blocks(inode, newsize);
+
 	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
 	if (inode_needs_sync(inode)) {
 		sync_mapping_buffers(inode->i_mapping);
@@ -1134,6 +1210,8 @@
 	} else {
 		mark_inode_dirty(inode);
 	}
+
+	return 0;
 }
 
 static struct ext2_inode *ext2_get_inode(struct super_block *sb, ino_t ino,
@@ -1474,8 +1552,15 @@
 		if (error)
 			return error;
 	}
-	error = inode_setattr(inode, iattr);
-	if (!error && (iattr->ia_valid & ATTR_MODE))
+	if (iattr->ia_valid & ATTR_SIZE) {
+		error = ext2_setsize(inode, iattr->ia_size);
+		if (error)
+			return error;
+	}
+	generic_setattr(inode, iattr);
+	if (iattr->ia_valid & ATTR_MODE)
 		error = ext2_acl_chmod(inode);
+	mark_inode_dirty(inode);
+
 	return error;
 }
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 71e9eb1..7ff43f4 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -119,6 +119,8 @@
 	int i;
 	struct ext2_sb_info *sbi = EXT2_SB(sb);
 
+	dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+
 	if (sb->s_dirt)
 		ext2_write_super(sb);
 
@@ -1063,6 +1065,12 @@
 	sb->s_op = &ext2_sops;
 	sb->s_export_op = &ext2_export_ops;
 	sb->s_xattr = ext2_xattr_handlers;
+
+#ifdef CONFIG_QUOTA
+	sb->dq_op = &dquot_operations;
+	sb->s_qcop = &dquot_quotactl_ops;
+#endif
+
 	root = ext2_iget(sb, EXT2_ROOT_INO);
 	if (IS_ERR(root)) {
 		ret = PTR_ERR(root);
@@ -1241,6 +1249,7 @@
 			spin_unlock(&sbi->s_lock);
 			return 0;
 		}
+
 		/*
 		 * OK, we are remounting a valid rw partition rdonly, so set
 		 * the rdonly flag and then mark the partition as valid again.
@@ -1248,6 +1257,13 @@
 		es->s_state = cpu_to_le16(sbi->s_mount_state);
 		es->s_mtime = cpu_to_le32(get_seconds());
 		spin_unlock(&sbi->s_lock);
+
+		err = dquot_suspend(sb, -1);
+		if (err < 0) {
+			spin_lock(&sbi->s_lock);
+			goto restore_opts;
+		}
+
 		ext2_sync_super(sb, es, 1);
 	} else {
 		__le32 ret = EXT2_HAS_RO_COMPAT_FEATURE(sb,
@@ -1269,8 +1285,12 @@
 		if (!ext2_setup_super (sb, es, 0))
 			sb->s_flags &= ~MS_RDONLY;
 		spin_unlock(&sbi->s_lock);
+
 		ext2_write_super(sb);
+
+		dquot_resume(sb, -1);
 	}
+
 	return 0;
 restore_opts:
 	sbi->s_mount_opt = old_opts.s_mount_opt;
diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index 373fa90..e2e72c3 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -297,7 +297,7 @@
 			kfree (old);
 		}
 		if (!parent)
-			root->rb_node = NULL;
+			*root = RB_ROOT;
 		else if (parent->rb_left == n)
 			parent->rb_left = NULL;
 		else if (parent->rb_right == n)
diff --git a/fs/ext3/fsync.c b/fs/ext3/fsync.c
index fcf7487..d7e9f74 100644
--- a/fs/ext3/fsync.c
+++ b/fs/ext3/fsync.c
@@ -43,9 +43,9 @@
  * inode to disk.
  */
 
-int ext3_sync_file(struct file * file, struct dentry *dentry, int datasync)
+int ext3_sync_file(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	struct ext3_inode_info *ei = EXT3_I(inode);
 	journal_t *journal = EXT3_SB(inode->i_sb)->s_journal;
 	int ret, needs_barrier = 0;
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 0fc1293..6c953bb 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -410,6 +410,8 @@
 	struct ext3_super_block *es = sbi->s_es;
 	int i, err;
 
+	dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+
 	lock_kernel();
 
 	ext3_xattr_put_super(sb);
@@ -748,7 +750,7 @@
 static int ext3_mark_dquot_dirty(struct dquot *dquot);
 static int ext3_write_info(struct super_block *sb, int type);
 static int ext3_quota_on(struct super_block *sb, int type, int format_id,
-				char *path, int remount);
+				char *path);
 static int ext3_quota_on_mount(struct super_block *sb, int type);
 static ssize_t ext3_quota_read(struct super_block *sb, int type, char *data,
 			       size_t len, loff_t off);
@@ -767,12 +769,12 @@
 
 static const struct quotactl_ops ext3_qctl_operations = {
 	.quota_on	= ext3_quota_on,
-	.quota_off	= vfs_quota_off,
-	.quota_sync	= vfs_quota_sync,
-	.get_info	= vfs_get_dqinfo,
-	.set_info	= vfs_set_dqinfo,
-	.get_dqblk	= vfs_get_dqblk,
-	.set_dqblk	= vfs_set_dqblk
+	.quota_off	= dquot_quota_off,
+	.quota_sync	= dquot_quota_sync,
+	.get_info	= dquot_get_dqinfo,
+	.set_info	= dquot_set_dqinfo,
+	.get_dqblk	= dquot_get_dqblk,
+	.set_dqblk	= dquot_set_dqblk
 };
 #endif
 
@@ -1527,7 +1529,7 @@
 	/* Turn quotas off */
 	for (i = 0; i < MAXQUOTAS; i++) {
 		if (sb_dqopt(sb)->files[i])
-			vfs_quota_off(sb, i, 0);
+			dquot_quota_off(sb, i);
 	}
 #endif
 	sb->s_flags = s_flags; /* Restore MS_RDONLY status */
@@ -2551,6 +2553,7 @@
 	ext3_fsblk_t n_blocks_count = 0;
 	unsigned long old_sb_flags;
 	struct ext3_mount_options old_opts;
+	int enable_quota = 0;
 	int err;
 #ifdef CONFIG_QUOTA
 	int i;
@@ -2597,6 +2600,10 @@
 		}
 
 		if (*flags & MS_RDONLY) {
+			err = dquot_suspend(sb, -1);
+			if (err < 0)
+				goto restore_opts;
+
 			/*
 			 * First of all, the unconditional stuff we have to do
 			 * to disable replay of the journal when we next remount
@@ -2651,6 +2658,7 @@
 				goto restore_opts;
 			if (!ext3_setup_super (sb, es, 0))
 				sb->s_flags &= ~MS_RDONLY;
+			enable_quota = 1;
 		}
 	}
 #ifdef CONFIG_QUOTA
@@ -2662,6 +2670,9 @@
 #endif
 	unlock_super(sb);
 	unlock_kernel();
+
+	if (enable_quota)
+		dquot_resume(sb, -1);
 	return 0;
 restore_opts:
 	sb->s_flags = old_sb_flags;
@@ -2851,24 +2862,21 @@
  */
 static int ext3_quota_on_mount(struct super_block *sb, int type)
 {
-	return vfs_quota_on_mount(sb, EXT3_SB(sb)->s_qf_names[type],
-			EXT3_SB(sb)->s_jquota_fmt, type);
+	return dquot_quota_on_mount(sb, EXT3_SB(sb)->s_qf_names[type],
+					EXT3_SB(sb)->s_jquota_fmt, type);
 }
 
 /*
  * Standard function to be called on quota_on
  */
 static int ext3_quota_on(struct super_block *sb, int type, int format_id,
-			 char *name, int remount)
+			 char *name)
 {
 	int err;
 	struct path path;
 
 	if (!test_opt(sb, QUOTA))
 		return -EINVAL;
-	/* When remounting, no checks are needed and in fact, name is NULL */
-	if (remount)
-		return vfs_quota_on(sb, type, format_id, name, remount);
 
 	err = kern_path(name, LOOKUP_FOLLOW, &path);
 	if (err)
@@ -2906,7 +2914,7 @@
 		}
 	}
 
-	err = vfs_quota_on_path(sb, type, format_id, &path);
+	err = dquot_quota_on_path(sb, type, format_id, &path);
 	path_put(&path);
 	return err;
 }
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index d2f37a5..95b7594 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -591,14 +591,15 @@
 	ret = ext4_mb_new_blocks(handle, &ar, errp);
 	if (count)
 		*count = ar.len;
-
 	/*
-	 * Account for the allocated meta blocks
+	 * Account for the allocated meta blocks.  We will never
+	 * fail EDQUOT for metdata, but we do account for it.
 	 */
 	if (!(*errp) && EXT4_I(inode)->i_delalloc_reserved_flag) {
 		spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
 		EXT4_I(inode)->i_allocated_meta_blocks += ar.len;
 		spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
+		dquot_alloc_block_nofail(inode, ar.len);
 	}
 	return ret;
 }
diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index 538c486..5b6973f 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -72,9 +72,9 @@
 		else if (start_blk >= (entry->start_blk + entry->count))
 			n = &(*n)->rb_right;
 		else {
-			if (start_blk + count > (entry->start_blk + 
+			if (start_blk + count > (entry->start_blk +
 						 entry->count))
-				entry->count = (start_blk + count - 
+				entry->count = (start_blk + count -
 						entry->start_blk);
 			new_node = *n;
 			new_entry = rb_entry(new_node, struct ext4_system_zone,
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 86cb6d8..ea5e6cb 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -83,11 +83,10 @@
 		error_msg = "inode out of bounds";
 
 	if (error_msg != NULL)
-		__ext4_error(dir->i_sb, function,
-			"bad entry in directory #%lu: %s - block=%llu"
+		ext4_error_inode(function, dir,
+			"bad entry in directory: %s - block=%llu"
 			"offset=%u(%u), inode=%u, rec_len=%d, name_len=%d",
-			dir->i_ino, error_msg, 
-			(unsigned long long) bh->b_blocknr,     
+			error_msg, (unsigned long long) bh->b_blocknr,
 			(unsigned) (offset%bh->b_size), offset,
 			le32_to_cpu(de->inode),
 			rlen, de->name_len);
@@ -111,7 +110,7 @@
 
 	if (EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
 				    EXT4_FEATURE_COMPAT_DIR_INDEX) &&
-	    ((EXT4_I(inode)->i_flags & EXT4_INDEX_FL) ||
+	    ((ext4_test_inode_flag(inode, EXT4_INODE_INDEX)) ||
 	     ((inode->i_size >> sb->s_blocksize_bits) == 1))) {
 		err = ext4_dx_readdir(filp, dirent, filldir);
 		if (err != ERR_BAD_DX_DIR) {
@@ -122,20 +121,20 @@
 		 * We don't set the inode dirty flag since it's not
 		 * critical that it get flushed back to the disk.
 		 */
-		EXT4_I(filp->f_path.dentry->d_inode)->i_flags &= ~EXT4_INDEX_FL;
+		ext4_clear_inode_flag(filp->f_path.dentry->d_inode, EXT4_INODE_INDEX);
 	}
 	stored = 0;
 	offset = filp->f_pos & (sb->s_blocksize - 1);
 
 	while (!error && !stored && filp->f_pos < inode->i_size) {
-		ext4_lblk_t blk = filp->f_pos >> EXT4_BLOCK_SIZE_BITS(sb);
-		struct buffer_head map_bh;
+		struct ext4_map_blocks map;
 		struct buffer_head *bh = NULL;
 
-		map_bh.b_state = 0;
-		err = ext4_get_blocks(NULL, inode, blk, 1, &map_bh, 0);
+		map.m_lblk = filp->f_pos >> EXT4_BLOCK_SIZE_BITS(sb);
+		map.m_len = 1;
+		err = ext4_map_blocks(NULL, inode, &map, 0);
 		if (err > 0) {
-			pgoff_t index = map_bh.b_blocknr >>
+			pgoff_t index = map.m_pblk >>
 					(PAGE_CACHE_SHIFT - inode->i_blkbits);
 			if (!ra_has_index(&filp->f_ra, index))
 				page_cache_sync_readahead(
@@ -143,7 +142,7 @@
 					&filp->f_ra, filp,
 					index, 1);
 			filp->f_ra.prev_pos = (loff_t)index << PAGE_CACHE_SHIFT;
-			bh = ext4_bread(NULL, inode, blk, 0, &err);
+			bh = ext4_bread(NULL, inode, map.m_lblk, 0, &err);
 		}
 
 		/*
@@ -152,9 +151,8 @@
 		 */
 		if (!bh) {
 			if (!dir_has_error) {
-				ext4_error(sb, "directory #%lu "
+				EXT4_ERROR_INODE(inode, "directory "
 					   "contains a hole at offset %Lu",
-					   inode->i_ino,
 					   (unsigned long long) filp->f_pos);
 				dir_has_error = 1;
 			}
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index bf938cf..19a4de5 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -29,6 +29,9 @@
 #include <linux/wait.h>
 #include <linux/blockgroup_lock.h>
 #include <linux/percpu_counter.h>
+#ifdef __KERNEL__
+#include <linux/compat.h>
+#endif
 
 /*
  * The fourth extended filesystem constants/structures
@@ -54,10 +57,10 @@
 #endif
 
 #define EXT4_ERROR_INODE(inode, fmt, a...) \
-	ext4_error_inode(__func__, (inode), (fmt), ## a);
+	ext4_error_inode(__func__, (inode), (fmt), ## a)
 
 #define EXT4_ERROR_FILE(file, fmt, a...)	\
-	ext4_error_file(__func__, (file), (fmt), ## a);
+	ext4_error_file(__func__, (file), (fmt), ## a)
 
 /* data type for block offset of block group */
 typedef int ext4_grpblk_t;
@@ -72,7 +75,7 @@
 typedef unsigned int ext4_group_t;
 
 /*
- * Flags used in mballoc's allocation_context flags field.  
+ * Flags used in mballoc's allocation_context flags field.
  *
  * Also used to show what's going on for debugging purposes when the
  * flag field is exported via the traceport interface
@@ -126,6 +129,29 @@
 };
 
 /*
+ * Logical to physical block mapping, used by ext4_map_blocks()
+ *
+ * This structure is used to pass requests into ext4_map_blocks() as
+ * well as to store the information returned by ext4_map_blocks().  It
+ * takes less room on the stack than a struct buffer_head.
+ */
+#define EXT4_MAP_NEW		(1 << BH_New)
+#define EXT4_MAP_MAPPED		(1 << BH_Mapped)
+#define EXT4_MAP_UNWRITTEN	(1 << BH_Unwritten)
+#define EXT4_MAP_BOUNDARY	(1 << BH_Boundary)
+#define EXT4_MAP_UNINIT		(1 << BH_Uninit)
+#define EXT4_MAP_FLAGS		(EXT4_MAP_NEW | EXT4_MAP_MAPPED |\
+				 EXT4_MAP_UNWRITTEN | EXT4_MAP_BOUNDARY |\
+				 EXT4_MAP_UNINIT)
+
+struct ext4_map_blocks {
+	ext4_fsblk_t m_pblk;
+	ext4_lblk_t m_lblk;
+	unsigned int m_len;
+	unsigned int m_flags;
+};
+
+/*
  * For delayed allocation tracking
  */
 struct mpage_da_data {
@@ -321,6 +347,83 @@
 		return flags & EXT4_OTHER_FLMASK;
 }
 
+/*
+ * Inode flags used for atomic set/get
+ */
+enum {
+	EXT4_INODE_SECRM	= 0,	/* Secure deletion */
+	EXT4_INODE_UNRM		= 1,	/* Undelete */
+	EXT4_INODE_COMPR	= 2,	/* Compress file */
+	EXT4_INODE_SYNC		= 3,	/* Synchronous updates */
+	EXT4_INODE_IMMUTABLE	= 4,	/* Immutable file */
+	EXT4_INODE_APPEND	= 5,	/* writes to file may only append */
+	EXT4_INODE_NODUMP	= 6,	/* do not dump file */
+	EXT4_INODE_NOATIME	= 7,	/* do not update atime */
+/* Reserved for compression usage... */
+	EXT4_INODE_DIRTY	= 8,
+	EXT4_INODE_COMPRBLK	= 9,	/* One or more compressed clusters */
+	EXT4_INODE_NOCOMPR	= 10,	/* Don't compress */
+	EXT4_INODE_ECOMPR	= 11,	/* Compression error */
+/* End compression flags --- maybe not all used */
+	EXT4_INODE_INDEX	= 12,	/* hash-indexed directory */
+	EXT4_INODE_IMAGIC	= 13,	/* AFS directory */
+	EXT4_INODE_JOURNAL_DATA	= 14,	/* file data should be journaled */
+	EXT4_INODE_NOTAIL	= 15,	/* file tail should not be merged */
+	EXT4_INODE_DIRSYNC	= 16,	/* dirsync behaviour (directories only) */
+	EXT4_INODE_TOPDIR	= 17,	/* Top of directory hierarchies*/
+	EXT4_INODE_HUGE_FILE	= 18,	/* Set to each huge file */
+	EXT4_INODE_EXTENTS	= 19,	/* Inode uses extents */
+	EXT4_INODE_EA_INODE	= 21,	/* Inode used for large EA */
+	EXT4_INODE_EOFBLOCKS	= 22,	/* Blocks allocated beyond EOF */
+	EXT4_INODE_RESERVED	= 31,	/* reserved for ext4 lib */
+};
+
+#define TEST_FLAG_VALUE(FLAG) (EXT4_##FLAG##_FL == (1 << EXT4_INODE_##FLAG))
+#define CHECK_FLAG_VALUE(FLAG) if (!TEST_FLAG_VALUE(FLAG)) { \
+	printk(KERN_EMERG "EXT4 flag fail: " #FLAG ": %d %d\n", \
+		EXT4_##FLAG##_FL, EXT4_INODE_##FLAG); BUG_ON(1); }
+
+/*
+ * Since it's pretty easy to mix up bit numbers and hex values, and we
+ * can't do a compile-time test for ENUM values, we use a run-time
+ * test to make sure that EXT4_XXX_FL is consistent with respect to
+ * EXT4_INODE_XXX.  If all is well the printk and BUG_ON will all drop
+ * out so it won't cost any extra space in the compiled kernel image.
+ * But it's important that these values are the same, since we are
+ * using EXT4_INODE_XXX to test for the flag values, but EXT4_XX_FL
+ * must be consistent with the values of FS_XXX_FL defined in
+ * include/linux/fs.h and the on-disk values found in ext2, ext3, and
+ * ext4 filesystems, and of course the values defined in e2fsprogs.
+ *
+ * It's not paranoia if the Murphy's Law really *is* out to get you.  :-)
+ */
+static inline void ext4_check_flag_values(void)
+{
+	CHECK_FLAG_VALUE(SECRM);
+	CHECK_FLAG_VALUE(UNRM);
+	CHECK_FLAG_VALUE(COMPR);
+	CHECK_FLAG_VALUE(SYNC);
+	CHECK_FLAG_VALUE(IMMUTABLE);
+	CHECK_FLAG_VALUE(APPEND);
+	CHECK_FLAG_VALUE(NODUMP);
+	CHECK_FLAG_VALUE(NOATIME);
+	CHECK_FLAG_VALUE(DIRTY);
+	CHECK_FLAG_VALUE(COMPRBLK);
+	CHECK_FLAG_VALUE(NOCOMPR);
+	CHECK_FLAG_VALUE(ECOMPR);
+	CHECK_FLAG_VALUE(INDEX);
+	CHECK_FLAG_VALUE(IMAGIC);
+	CHECK_FLAG_VALUE(JOURNAL_DATA);
+	CHECK_FLAG_VALUE(NOTAIL);
+	CHECK_FLAG_VALUE(DIRSYNC);
+	CHECK_FLAG_VALUE(TOPDIR);
+	CHECK_FLAG_VALUE(HUGE_FILE);
+	CHECK_FLAG_VALUE(EXTENTS);
+	CHECK_FLAG_VALUE(EA_INODE);
+	CHECK_FLAG_VALUE(EOFBLOCKS);
+	CHECK_FLAG_VALUE(RESERVED);
+}
+
 /* Used to pass group descriptor data when online resize is done */
 struct ext4_new_group_input {
 	__u32 group;		/* Group number for this data */
@@ -332,6 +435,18 @@
 	__u16 unused;
 };
 
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
+struct compat_ext4_new_group_input {
+	u32 group;
+	compat_u64 block_bitmap;
+	compat_u64 inode_bitmap;
+	compat_u64 inode_table;
+	u32 blocks_count;
+	u16 reserved_blocks;
+	u16 unused;
+};
+#endif
+
 /* The struct ext4_new_group_input in kernel space, with free_blocks_count */
 struct ext4_new_group_data {
 	__u32 group;
@@ -355,7 +470,7 @@
 #define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT	(EXT4_GET_BLOCKS_UNINIT_EXT|\
 						 EXT4_GET_BLOCKS_CREATE)
 	/* Caller is from the delayed allocation writeout path,
-	   so set the magic i_delalloc_reserve_flag after taking the 
+	   so set the magic i_delalloc_reserve_flag after taking the
 	   inode allocation semaphore for */
 #define EXT4_GET_BLOCKS_DELALLOC_RESERVE	0x0004
 	/* caller is from the direct IO path, request to creation of an
@@ -398,6 +513,7 @@
 #define EXT4_IOC_ALLOC_DA_BLKS		_IO('f', 12)
 #define EXT4_IOC_MOVE_EXT		_IOWR('f', 15, struct move_extent)
 
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
 /*
  * ioctl commands in 32 bit emulation
  */
@@ -408,11 +524,13 @@
 #define EXT4_IOC32_GETRSVSZ		_IOR('f', 5, int)
 #define EXT4_IOC32_SETRSVSZ		_IOW('f', 6, int)
 #define EXT4_IOC32_GROUP_EXTEND		_IOW('f', 7, unsigned int)
+#define EXT4_IOC32_GROUP_ADD		_IOW('f', 8, struct compat_ext4_new_group_input)
 #ifdef CONFIG_JBD2_DEBUG
 #define EXT4_IOC32_WAIT_FOR_READONLY	_IOR('f', 99, int)
 #endif
 #define EXT4_IOC32_GETVERSION_OLD	FS_IOC32_GETVERSION
 #define EXT4_IOC32_SETVERSION_OLD	FS_IOC32_SETVERSION
+#endif
 
 
 /*
@@ -616,9 +734,8 @@
  */
 struct ext4_inode_info {
 	__le32	i_data[15];	/* unconverted */
-	__u32	i_flags;
-	ext4_fsblk_t	i_file_acl;
 	__u32	i_dtime;
+	ext4_fsblk_t	i_file_acl;
 
 	/*
 	 * i_block_group is the number of the block group which contains
@@ -629,6 +746,7 @@
 	 */
 	ext4_group_t	i_block_group;
 	unsigned long	i_state_flags;		/* Dynamic state flags */
+	unsigned long	i_flags;
 
 	ext4_lblk_t		i_dir_start_lookup;
 #ifdef CONFIG_EXT4_FS_XATTR
@@ -1062,22 +1180,25 @@
 	EXT4_STATE_DA_ALLOC_CLOSE,	/* Alloc DA blks on close */
 	EXT4_STATE_EXT_MIGRATE,		/* Inode is migrating */
 	EXT4_STATE_DIO_UNWRITTEN,	/* need convert on dio done*/
+	EXT4_STATE_NEWENTRY,		/* File just added to dir */
 };
 
-static inline int ext4_test_inode_state(struct inode *inode, int bit)
-{
-	return test_bit(bit, &EXT4_I(inode)->i_state_flags);
+#define EXT4_INODE_BIT_FNS(name, field)					\
+static inline int ext4_test_inode_##name(struct inode *inode, int bit)	\
+{									\
+	return test_bit(bit, &EXT4_I(inode)->i_##field);		\
+}									\
+static inline void ext4_set_inode_##name(struct inode *inode, int bit)	\
+{									\
+	set_bit(bit, &EXT4_I(inode)->i_##field);			\
+}									\
+static inline void ext4_clear_inode_##name(struct inode *inode, int bit) \
+{									\
+	clear_bit(bit, &EXT4_I(inode)->i_##field);			\
 }
 
-static inline void ext4_set_inode_state(struct inode *inode, int bit)
-{
-	set_bit(bit, &EXT4_I(inode)->i_state_flags);
-}
-
-static inline void ext4_clear_inode_state(struct inode *inode, int bit)
-{
-	clear_bit(bit, &EXT4_I(inode)->i_state_flags);
-}
+EXT4_INODE_BIT_FNS(flag, flags)
+EXT4_INODE_BIT_FNS(state, state_flags)
 #else
 /* Assume that user mode programs are passing in an ext4fs superblock, not
  * a kernel struct super_block.  This will allow us to call the feature-test
@@ -1264,7 +1385,7 @@
 
 #define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \
 				      EXT4_FEATURE_COMPAT_DIR_INDEX) && \
-		      (EXT4_I(dir)->i_flags & EXT4_INDEX_FL))
+		    ext4_test_inode_flag((dir), EXT4_INODE_INDEX))
 #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)
 #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
 
@@ -1398,7 +1519,7 @@
 extern void ext4_htree_free_dir_info(struct dir_private_info *p);
 
 /* fsync.c */
-extern int ext4_sync_file(struct file *, struct dentry *, int);
+extern int ext4_sync_file(struct file *, int);
 
 /* hash.c */
 extern int ext4fs_dirhash(const char *name, int len, struct
@@ -1678,6 +1799,7 @@
 	ext4_grpblk_t	bb_first_free;	/* first free block */
 	ext4_grpblk_t	bb_free;	/* total free blocks */
 	ext4_grpblk_t	bb_fragments;	/* nr of freespace fragments */
+	ext4_grpblk_t	bb_largest_free_order;/* order of largest frag in BG */
 	struct          list_head bb_prealloc_list;
 #ifdef DOUBLE_CHECK
 	void            *bb_bitmap;
@@ -1772,9 +1894,8 @@
 extern int ext4_ext_writepage_trans_blocks(struct inode *, int);
 extern int ext4_ext_index_trans_blocks(struct inode *inode, int nrblocks,
 				       int chunk);
-extern int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
-			       ext4_lblk_t iblock, unsigned int max_blocks,
-			       struct buffer_head *bh_result, int flags);
+extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
+			       struct ext4_map_blocks *map, int flags);
 extern void ext4_ext_truncate(struct inode *);
 extern void ext4_ext_init(struct super_block *);
 extern void ext4_ext_release(struct super_block *);
@@ -1782,6 +1903,8 @@
 			  loff_t len);
 extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
 			  ssize_t len);
+extern int ext4_map_blocks(handle_t *handle, struct inode *inode,
+			   struct ext4_map_blocks *map, int flags);
 extern int ext4_get_blocks(handle_t *handle, struct inode *inode,
 			   sector_t block, unsigned int max_blocks,
 			   struct buffer_head *bh, int flags);
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index b79ad51..dade0c0 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -273,7 +273,7 @@
 		return 1;
 	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
 		return 1;
-	if (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL)
+	if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
 		return 1;
 	return 0;
 }
@@ -284,7 +284,7 @@
 		return 0;
 	if (!S_ISREG(inode->i_mode))
 		return 0;
-	if (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL)
+	if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
 		return 0;
 	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
 		return 1;
@@ -297,7 +297,7 @@
 		return 0;
 	if (EXT4_JOURNAL(inode) == NULL)
 		return 1;
-	if (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL)
+	if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
 		return 0;
 	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
 		return 1;
@@ -321,7 +321,7 @@
 		return 0;
 	if (!S_ISREG(inode->i_mode))
 		return 0;
-	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return 0;
 	if (ext4_should_journal_data(inode))
 		return 0;
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 236b834..377309c 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -107,11 +107,8 @@
 	if (err <= 0)
 		return err;
 	err = ext4_truncate_restart_trans(handle, inode, needed);
-	/*
-	 * We have dropped i_data_sem so someone might have cached again
-	 * an extent we are going to truncate.
-	 */
-	ext4_ext_invalidate_cache(inode);
+	if (err == 0)
+		err = -EAGAIN;
 
 	return err;
 }
@@ -185,10 +182,10 @@
 	if (flex_size >= EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME) {
 		/*
 		 * If there are at least EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME
-		 * block groups per flexgroup, reserve the first block 
-		 * group for directories and special files.  Regular 
+		 * block groups per flexgroup, reserve the first block
+		 * group for directories and special files.  Regular
 		 * files will start at the second block group.  This
-		 * tends to speed up directory access and improves 
+		 * tends to speed up directory access and improves
 		 * fsck times.
 		 */
 		block_group &= ~(flex_size-1);
@@ -439,10 +436,10 @@
 	return 0;
 
 corrupted:
-	__ext4_error(inode->i_sb, function,
-			"bad header/extent in inode #%lu: %s - magic %x, "
+	ext4_error_inode(function, inode,
+			"bad header/extent: %s - magic %x, "
 			"entries %u, max %u(%u), depth %u(%u)",
-			inode->i_ino, error_msg, le16_to_cpu(eh->eh_magic),
+			error_msg, le16_to_cpu(eh->eh_magic),
 			le16_to_cpu(eh->eh_entries), le16_to_cpu(eh->eh_max),
 			max, le16_to_cpu(eh->eh_depth), depth);
 
@@ -1622,9 +1619,7 @@
 		merge_done = 1;
 		WARN_ON(eh->eh_entries == 0);
 		if (!eh->eh_entries)
-			ext4_error(inode->i_sb,
-				   "inode#%lu, eh->eh_entries = 0!",
-				   inode->i_ino);
+			EXT4_ERROR_INODE(inode, "eh->eh_entries = 0!");
 	}
 
 	return merge_done;
@@ -2039,7 +2034,7 @@
 	struct ext4_ext_cache *cex;
 	int ret = EXT4_EXT_CACHE_NO;
 
-	/* 
+	/*
 	 * We borrow i_block_reservation_lock to protect i_cached_extent
 	 */
 	spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
@@ -2361,7 +2356,7 @@
 	int depth = ext_depth(inode);
 	struct ext4_ext_path *path;
 	handle_t *handle;
-	int i = 0, err = 0;
+	int i, err;
 
 	ext_debug("truncate since %u\n", start);
 
@@ -2370,23 +2365,26 @@
 	if (IS_ERR(handle))
 		return PTR_ERR(handle);
 
+again:
 	ext4_ext_invalidate_cache(inode);
 
 	/*
 	 * We start scanning from right side, freeing all the blocks
 	 * after i_size and walking into the tree depth-wise.
 	 */
+	depth = ext_depth(inode);
 	path = kzalloc(sizeof(struct ext4_ext_path) * (depth + 1), GFP_NOFS);
 	if (path == NULL) {
 		ext4_journal_stop(handle);
 		return -ENOMEM;
 	}
+	path[0].p_depth = depth;
 	path[0].p_hdr = ext_inode_hdr(inode);
 	if (ext4_ext_check(inode, path[0].p_hdr, depth)) {
 		err = -EIO;
 		goto out;
 	}
-	path[0].p_depth = depth;
+	i = err = 0;
 
 	while (i >= 0 && err == 0) {
 		if (i == depth) {
@@ -2480,6 +2478,8 @@
 out:
 	ext4_ext_drop_refs(path);
 	kfree(path);
+	if (err == -EAGAIN)
+		goto again;
 	ext4_journal_stop(handle);
 
 	return err;
@@ -2544,7 +2544,7 @@
 /* FIXME!! we need to try to merge to left or right after zero-out  */
 static int ext4_ext_zeroout(struct inode *inode, struct ext4_extent *ex)
 {
-	int ret = -EIO;
+	int ret;
 	struct bio *bio;
 	int blkbits, blocksize;
 	sector_t ee_pblock;
@@ -2568,6 +2568,9 @@
 			len = ee_len;
 
 		bio = bio_alloc(GFP_NOIO, len);
+		if (!bio)
+			return -ENOMEM;
+
 		bio->bi_sector = ee_pblock;
 		bio->bi_bdev   = inode->i_sb->s_bdev;
 
@@ -2595,22 +2598,20 @@
 		submit_bio(WRITE, bio);
 		wait_for_completion(&event);
 
-		if (test_bit(BIO_UPTODATE, &bio->bi_flags))
-			ret = 0;
-		else {
-			ret = -EIO;
-			break;
+		if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) {
+			bio_put(bio);
+			return -EIO;
 		}
 		bio_put(bio);
 		ee_len    -= done;
 		ee_pblock += done  << (blkbits - 9);
 	}
-	return ret;
+	return 0;
 }
 
 #define EXT4_EXT_ZERO_LEN 7
 /*
- * This function is called by ext4_ext_get_blocks() if someone tries to write
+ * This function is called by ext4_ext_map_blocks() if someone tries to write
  * to an uninitialized extent. It may result in splitting the uninitialized
  * extent into multiple extents (upto three - one initialized and two
  * uninitialized).
@@ -2620,39 +2621,55 @@
  *   c> Splits in three extents: Somone is writing in middle of the extent
  */
 static int ext4_ext_convert_to_initialized(handle_t *handle,
-						struct inode *inode,
-						struct ext4_ext_path *path,
-						ext4_lblk_t iblock,
-						unsigned int max_blocks)
+					   struct inode *inode,
+					   struct ext4_map_blocks *map,
+					   struct ext4_ext_path *path)
 {
 	struct ext4_extent *ex, newex, orig_ex;
 	struct ext4_extent *ex1 = NULL;
 	struct ext4_extent *ex2 = NULL;
 	struct ext4_extent *ex3 = NULL;
 	struct ext4_extent_header *eh;
-	ext4_lblk_t ee_block;
+	ext4_lblk_t ee_block, eof_block;
 	unsigned int allocated, ee_len, depth;
 	ext4_fsblk_t newblock;
 	int err = 0;
 	int ret = 0;
+	int may_zeroout;
+
+	ext_debug("ext4_ext_convert_to_initialized: inode %lu, logical"
+		"block %llu, max_blocks %u\n", inode->i_ino,
+		(unsigned long long)map->m_lblk, map->m_len);
+
+	eof_block = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
+		inode->i_sb->s_blocksize_bits;
+	if (eof_block < map->m_lblk + map->m_len)
+		eof_block = map->m_lblk + map->m_len;
 
 	depth = ext_depth(inode);
 	eh = path[depth].p_hdr;
 	ex = path[depth].p_ext;
 	ee_block = le32_to_cpu(ex->ee_block);
 	ee_len = ext4_ext_get_actual_len(ex);
-	allocated = ee_len - (iblock - ee_block);
-	newblock = iblock - ee_block + ext_pblock(ex);
+	allocated = ee_len - (map->m_lblk - ee_block);
+	newblock = map->m_lblk - ee_block + ext_pblock(ex);
+
 	ex2 = ex;
 	orig_ex.ee_block = ex->ee_block;
 	orig_ex.ee_len   = cpu_to_le16(ee_len);
 	ext4_ext_store_pblock(&orig_ex, ext_pblock(ex));
 
+	/*
+	 * It is safe to convert extent to initialized via explicit
+	 * zeroout only if extent is fully insde i_size or new_size.
+	 */
+	may_zeroout = ee_block + ee_len <= eof_block;
+
 	err = ext4_ext_get_access(handle, inode, path + depth);
 	if (err)
 		goto out;
 	/* If extent has less than 2*EXT4_EXT_ZERO_LEN zerout directly */
-	if (ee_len <= 2*EXT4_EXT_ZERO_LEN) {
+	if (ee_len <= 2*EXT4_EXT_ZERO_LEN && may_zeroout) {
 		err =  ext4_ext_zeroout(inode, &orig_ex);
 		if (err)
 			goto fix_extent_len;
@@ -2665,10 +2682,10 @@
 		return allocated;
 	}
 
-	/* ex1: ee_block to iblock - 1 : uninitialized */
-	if (iblock > ee_block) {
+	/* ex1: ee_block to map->m_lblk - 1 : uninitialized */
+	if (map->m_lblk > ee_block) {
 		ex1 = ex;
-		ex1->ee_len = cpu_to_le16(iblock - ee_block);
+		ex1->ee_len = cpu_to_le16(map->m_lblk - ee_block);
 		ext4_ext_mark_uninitialized(ex1);
 		ex2 = &newex;
 	}
@@ -2677,15 +2694,15 @@
 	 * we insert ex3, if ex1 is NULL. This is to avoid temporary
 	 * overlap of blocks.
 	 */
-	if (!ex1 && allocated > max_blocks)
-		ex2->ee_len = cpu_to_le16(max_blocks);
+	if (!ex1 && allocated > map->m_len)
+		ex2->ee_len = cpu_to_le16(map->m_len);
 	/* ex3: to ee_block + ee_len : uninitialised */
-	if (allocated > max_blocks) {
+	if (allocated > map->m_len) {
 		unsigned int newdepth;
 		/* If extent has less than EXT4_EXT_ZERO_LEN zerout directly */
-		if (allocated <= EXT4_EXT_ZERO_LEN) {
+		if (allocated <= EXT4_EXT_ZERO_LEN && may_zeroout) {
 			/*
-			 * iblock == ee_block is handled by the zerouout
+			 * map->m_lblk == ee_block is handled by the zerouout
 			 * at the beginning.
 			 * Mark first half uninitialized.
 			 * Mark second half initialized and zero out the
@@ -2698,7 +2715,7 @@
 			ext4_ext_dirty(handle, inode, path + depth);
 
 			ex3 = &newex;
-			ex3->ee_block = cpu_to_le32(iblock);
+			ex3->ee_block = cpu_to_le32(map->m_lblk);
 			ext4_ext_store_pblock(ex3, newblock);
 			ex3->ee_len = cpu_to_le16(allocated);
 			err = ext4_ext_insert_extent(handle, inode, path,
@@ -2711,7 +2728,7 @@
 				ex->ee_len   = orig_ex.ee_len;
 				ext4_ext_store_pblock(ex, ext_pblock(&orig_ex));
 				ext4_ext_dirty(handle, inode, path + depth);
-				/* blocks available from iblock */
+				/* blocks available from map->m_lblk */
 				return allocated;
 
 			} else if (err)
@@ -2733,8 +2750,8 @@
 				 */
 				depth = ext_depth(inode);
 				ext4_ext_drop_refs(path);
-				path = ext4_ext_find_extent(inode,
-								iblock, path);
+				path = ext4_ext_find_extent(inode, map->m_lblk,
+							    path);
 				if (IS_ERR(path)) {
 					err = PTR_ERR(path);
 					return err;
@@ -2754,12 +2771,12 @@
 			return allocated;
 		}
 		ex3 = &newex;
-		ex3->ee_block = cpu_to_le32(iblock + max_blocks);
-		ext4_ext_store_pblock(ex3, newblock + max_blocks);
-		ex3->ee_len = cpu_to_le16(allocated - max_blocks);
+		ex3->ee_block = cpu_to_le32(map->m_lblk + map->m_len);
+		ext4_ext_store_pblock(ex3, newblock + map->m_len);
+		ex3->ee_len = cpu_to_le16(allocated - map->m_len);
 		ext4_ext_mark_uninitialized(ex3);
 		err = ext4_ext_insert_extent(handle, inode, path, ex3, 0);
-		if (err == -ENOSPC) {
+		if (err == -ENOSPC && may_zeroout) {
 			err =  ext4_ext_zeroout(inode, &orig_ex);
 			if (err)
 				goto fix_extent_len;
@@ -2769,7 +2786,7 @@
 			ext4_ext_store_pblock(ex, ext_pblock(&orig_ex));
 			ext4_ext_dirty(handle, inode, path + depth);
 			/* zeroed the full extent */
-			/* blocks available from iblock */
+			/* blocks available from map->m_lblk */
 			return allocated;
 
 		} else if (err)
@@ -2783,11 +2800,13 @@
 		 * update the extent length after successful insert of the
 		 * split extent
 		 */
-		orig_ex.ee_len = cpu_to_le16(ee_len -
-						ext4_ext_get_actual_len(ex3));
+		ee_len -= ext4_ext_get_actual_len(ex3);
+		orig_ex.ee_len = cpu_to_le16(ee_len);
+		may_zeroout = ee_block + ee_len <= eof_block;
+
 		depth = newdepth;
 		ext4_ext_drop_refs(path);
-		path = ext4_ext_find_extent(inode, iblock, path);
+		path = ext4_ext_find_extent(inode, map->m_lblk, path);
 		if (IS_ERR(path)) {
 			err = PTR_ERR(path);
 			goto out;
@@ -2801,14 +2820,14 @@
 		if (err)
 			goto out;
 
-		allocated = max_blocks;
+		allocated = map->m_len;
 
 		/* If extent has less than EXT4_EXT_ZERO_LEN and we are trying
 		 * to insert a extent in the middle zerout directly
 		 * otherwise give the extent a chance to merge to left
 		 */
 		if (le16_to_cpu(orig_ex.ee_len) <= EXT4_EXT_ZERO_LEN &&
-							iblock != ee_block) {
+			map->m_lblk != ee_block && may_zeroout) {
 			err =  ext4_ext_zeroout(inode, &orig_ex);
 			if (err)
 				goto fix_extent_len;
@@ -2818,7 +2837,7 @@
 			ext4_ext_store_pblock(ex, ext_pblock(&orig_ex));
 			ext4_ext_dirty(handle, inode, path + depth);
 			/* zero out the first half */
-			/* blocks available from iblock */
+			/* blocks available from map->m_lblk */
 			return allocated;
 		}
 	}
@@ -2829,12 +2848,12 @@
 	 */
 	if (ex1 && ex1 != ex) {
 		ex1 = ex;
-		ex1->ee_len = cpu_to_le16(iblock - ee_block);
+		ex1->ee_len = cpu_to_le16(map->m_lblk - ee_block);
 		ext4_ext_mark_uninitialized(ex1);
 		ex2 = &newex;
 	}
-	/* ex2: iblock to iblock + maxblocks-1 : initialised */
-	ex2->ee_block = cpu_to_le32(iblock);
+	/* ex2: map->m_lblk to map->m_lblk + maxblocks-1 : initialised */
+	ex2->ee_block = cpu_to_le32(map->m_lblk);
 	ext4_ext_store_pblock(ex2, newblock);
 	ex2->ee_len = cpu_to_le16(allocated);
 	if (ex2 != ex)
@@ -2877,7 +2896,7 @@
 	goto out;
 insert:
 	err = ext4_ext_insert_extent(handle, inode, path, &newex, 0);
-	if (err == -ENOSPC) {
+	if (err == -ENOSPC && may_zeroout) {
 		err =  ext4_ext_zeroout(inode, &orig_ex);
 		if (err)
 			goto fix_extent_len;
@@ -2904,7 +2923,7 @@
 }
 
 /*
- * This function is called by ext4_ext_get_blocks() from
+ * This function is called by ext4_ext_map_blocks() from
  * ext4_get_blocks_dio_write() when DIO to write
  * to an uninitialized extent.
  *
@@ -2927,9 +2946,8 @@
  */
 static int ext4_split_unwritten_extents(handle_t *handle,
 					struct inode *inode,
+					struct ext4_map_blocks *map,
 					struct ext4_ext_path *path,
-					ext4_lblk_t iblock,
-					unsigned int max_blocks,
 					int flags)
 {
 	struct ext4_extent *ex, newex, orig_ex;
@@ -2937,41 +2955,55 @@
 	struct ext4_extent *ex2 = NULL;
 	struct ext4_extent *ex3 = NULL;
 	struct ext4_extent_header *eh;
-	ext4_lblk_t ee_block;
+	ext4_lblk_t ee_block, eof_block;
 	unsigned int allocated, ee_len, depth;
 	ext4_fsblk_t newblock;
 	int err = 0;
+	int may_zeroout;
 
-	ext_debug("ext4_split_unwritten_extents: inode %lu,"
-		  "iblock %llu, max_blocks %u\n", inode->i_ino,
-		  (unsigned long long)iblock, max_blocks);
+	ext_debug("ext4_split_unwritten_extents: inode %lu, logical"
+		"block %llu, max_blocks %u\n", inode->i_ino,
+		(unsigned long long)map->m_lblk, map->m_len);
+
+	eof_block = (inode->i_size + inode->i_sb->s_blocksize - 1) >>
+		inode->i_sb->s_blocksize_bits;
+	if (eof_block < map->m_lblk + map->m_len)
+		eof_block = map->m_lblk + map->m_len;
+
 	depth = ext_depth(inode);
 	eh = path[depth].p_hdr;
 	ex = path[depth].p_ext;
 	ee_block = le32_to_cpu(ex->ee_block);
 	ee_len = ext4_ext_get_actual_len(ex);
-	allocated = ee_len - (iblock - ee_block);
-	newblock = iblock - ee_block + ext_pblock(ex);
+	allocated = ee_len - (map->m_lblk - ee_block);
+	newblock = map->m_lblk - ee_block + ext_pblock(ex);
+
 	ex2 = ex;
 	orig_ex.ee_block = ex->ee_block;
 	orig_ex.ee_len   = cpu_to_le16(ee_len);
 	ext4_ext_store_pblock(&orig_ex, ext_pblock(ex));
 
 	/*
+	 * It is safe to convert extent to initialized via explicit
+	 * zeroout only if extent is fully insde i_size or new_size.
+	 */
+	may_zeroout = ee_block + ee_len <= eof_block;
+
+	/*
  	 * If the uninitialized extent begins at the same logical
  	 * block where the write begins, and the write completely
  	 * covers the extent, then we don't need to split it.
  	 */
-	if ((iblock == ee_block) && (allocated <= max_blocks))
+	if ((map->m_lblk == ee_block) && (allocated <= map->m_len))
 		return allocated;
 
 	err = ext4_ext_get_access(handle, inode, path + depth);
 	if (err)
 		goto out;
-	/* ex1: ee_block to iblock - 1 : uninitialized */
-	if (iblock > ee_block) {
+	/* ex1: ee_block to map->m_lblk - 1 : uninitialized */
+	if (map->m_lblk > ee_block) {
 		ex1 = ex;
-		ex1->ee_len = cpu_to_le16(iblock - ee_block);
+		ex1->ee_len = cpu_to_le16(map->m_lblk - ee_block);
 		ext4_ext_mark_uninitialized(ex1);
 		ex2 = &newex;
 	}
@@ -2980,18 +3012,18 @@
 	 * we insert ex3, if ex1 is NULL. This is to avoid temporary
 	 * overlap of blocks.
 	 */
-	if (!ex1 && allocated > max_blocks)
-		ex2->ee_len = cpu_to_le16(max_blocks);
+	if (!ex1 && allocated > map->m_len)
+		ex2->ee_len = cpu_to_le16(map->m_len);
 	/* ex3: to ee_block + ee_len : uninitialised */
-	if (allocated > max_blocks) {
+	if (allocated > map->m_len) {
 		unsigned int newdepth;
 		ex3 = &newex;
-		ex3->ee_block = cpu_to_le32(iblock + max_blocks);
-		ext4_ext_store_pblock(ex3, newblock + max_blocks);
-		ex3->ee_len = cpu_to_le16(allocated - max_blocks);
+		ex3->ee_block = cpu_to_le32(map->m_lblk + map->m_len);
+		ext4_ext_store_pblock(ex3, newblock + map->m_len);
+		ex3->ee_len = cpu_to_le16(allocated - map->m_len);
 		ext4_ext_mark_uninitialized(ex3);
 		err = ext4_ext_insert_extent(handle, inode, path, ex3, flags);
-		if (err == -ENOSPC) {
+		if (err == -ENOSPC && may_zeroout) {
 			err =  ext4_ext_zeroout(inode, &orig_ex);
 			if (err)
 				goto fix_extent_len;
@@ -3001,7 +3033,7 @@
 			ext4_ext_store_pblock(ex, ext_pblock(&orig_ex));
 			ext4_ext_dirty(handle, inode, path + depth);
 			/* zeroed the full extent */
-			/* blocks available from iblock */
+			/* blocks available from map->m_lblk */
 			return allocated;
 
 		} else if (err)
@@ -3015,11 +3047,13 @@
 		 * update the extent length after successful insert of the
 		 * split extent
 		 */
-		orig_ex.ee_len = cpu_to_le16(ee_len -
-						ext4_ext_get_actual_len(ex3));
+		ee_len -= ext4_ext_get_actual_len(ex3);
+		orig_ex.ee_len = cpu_to_le16(ee_len);
+		may_zeroout = ee_block + ee_len <= eof_block;
+
 		depth = newdepth;
 		ext4_ext_drop_refs(path);
-		path = ext4_ext_find_extent(inode, iblock, path);
+		path = ext4_ext_find_extent(inode, map->m_lblk, path);
 		if (IS_ERR(path)) {
 			err = PTR_ERR(path);
 			goto out;
@@ -3033,7 +3067,7 @@
 		if (err)
 			goto out;
 
-		allocated = max_blocks;
+		allocated = map->m_len;
 	}
 	/*
 	 * If there was a change of depth as part of the
@@ -3042,15 +3076,15 @@
 	 */
 	if (ex1 && ex1 != ex) {
 		ex1 = ex;
-		ex1->ee_len = cpu_to_le16(iblock - ee_block);
+		ex1->ee_len = cpu_to_le16(map->m_lblk - ee_block);
 		ext4_ext_mark_uninitialized(ex1);
 		ex2 = &newex;
 	}
 	/*
-	 * ex2: iblock to iblock + maxblocks-1 : to be direct IO written,
-	 * uninitialised still.
+	 * ex2: map->m_lblk to map->m_lblk + map->m_len-1 : to be written
+	 * using direct I/O, uninitialised still.
 	 */
-	ex2->ee_block = cpu_to_le32(iblock);
+	ex2->ee_block = cpu_to_le32(map->m_lblk);
 	ext4_ext_store_pblock(ex2, newblock);
 	ex2->ee_len = cpu_to_le16(allocated);
 	ext4_ext_mark_uninitialized(ex2);
@@ -3062,7 +3096,7 @@
 	goto out;
 insert:
 	err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);
-	if (err == -ENOSPC) {
+	if (err == -ENOSPC && may_zeroout) {
 		err =  ext4_ext_zeroout(inode, &orig_ex);
 		if (err)
 			goto fix_extent_len;
@@ -3152,10 +3186,9 @@
 
 static int
 ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
-			ext4_lblk_t iblock, unsigned int max_blocks,
+			struct ext4_map_blocks *map,
 			struct ext4_ext_path *path, int flags,
-			unsigned int allocated, struct buffer_head *bh_result,
-			ext4_fsblk_t newblock)
+			unsigned int allocated, ext4_fsblk_t newblock)
 {
 	int ret = 0;
 	int err = 0;
@@ -3163,15 +3196,14 @@
 
 	ext_debug("ext4_ext_handle_uninitialized_extents: inode %lu, logical"
 		  "block %llu, max_blocks %u, flags %d, allocated %u",
-		  inode->i_ino, (unsigned long long)iblock, max_blocks,
+		  inode->i_ino, (unsigned long long)map->m_lblk, map->m_len,
 		  flags, allocated);
 	ext4_ext_show_leaf(inode, path);
 
 	/* get_block() before submit the IO, split the extent */
 	if ((flags & EXT4_GET_BLOCKS_PRE_IO)) {
-		ret = ext4_split_unwritten_extents(handle,
-						inode, path, iblock,
-						max_blocks, flags);
+		ret = ext4_split_unwritten_extents(handle, inode, map,
+						   path, flags);
 		/*
 		 * Flag the inode(non aio case) or end_io struct (aio case)
 		 * that this IO needs to convertion to written when IO is
@@ -3182,7 +3214,7 @@
 		else
 			ext4_set_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN);
 		if (ext4_should_dioread_nolock(inode))
-			set_buffer_uninit(bh_result);
+			map->m_flags |= EXT4_MAP_UNINIT;
 		goto out;
 	}
 	/* IO end_io complete, convert the filled extent to written */
@@ -3210,14 +3242,12 @@
 		 * the buffer head will be unmapped so that
 		 * a read from the block returns 0s.
 		 */
-		set_buffer_unwritten(bh_result);
+		map->m_flags |= EXT4_MAP_UNWRITTEN;
 		goto out1;
 	}
 
 	/* buffered write, writepage time, convert*/
-	ret = ext4_ext_convert_to_initialized(handle, inode,
-						path, iblock,
-						max_blocks);
+	ret = ext4_ext_convert_to_initialized(handle, inode, map, path);
 	if (ret >= 0)
 		ext4_update_inode_fsync_trans(handle, inode, 1);
 out:
@@ -3226,7 +3256,7 @@
 		goto out2;
 	} else
 		allocated = ret;
-	set_buffer_new(bh_result);
+	map->m_flags |= EXT4_MAP_NEW;
 	/*
 	 * if we allocated more blocks than requested
 	 * we need to make sure we unmap the extra block
@@ -3234,11 +3264,11 @@
 	 * unmapped later when we find the buffer_head marked
 	 * new.
 	 */
-	if (allocated > max_blocks) {
+	if (allocated > map->m_len) {
 		unmap_underlying_metadata_blocks(inode->i_sb->s_bdev,
-					newblock + max_blocks,
-					allocated - max_blocks);
-		allocated = max_blocks;
+					newblock + map->m_len,
+					allocated - map->m_len);
+		allocated = map->m_len;
 	}
 
 	/*
@@ -3252,13 +3282,13 @@
 		ext4_da_update_reserve_space(inode, allocated, 0);
 
 map_out:
-	set_buffer_mapped(bh_result);
+	map->m_flags |= EXT4_MAP_MAPPED;
 out1:
-	if (allocated > max_blocks)
-		allocated = max_blocks;
+	if (allocated > map->m_len)
+		allocated = map->m_len;
 	ext4_ext_show_leaf(inode, path);
-	bh_result->b_bdev = inode->i_sb->s_bdev;
-	bh_result->b_blocknr = newblock;
+	map->m_pblk = newblock;
+	map->m_len = allocated;
 out2:
 	if (path) {
 		ext4_ext_drop_refs(path);
@@ -3284,26 +3314,23 @@
  *
  * return < 0, error case.
  */
-int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
-			ext4_lblk_t iblock,
-			unsigned int max_blocks, struct buffer_head *bh_result,
-			int flags)
+int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
+			struct ext4_map_blocks *map, int flags)
 {
 	struct ext4_ext_path *path = NULL;
 	struct ext4_extent_header *eh;
 	struct ext4_extent newex, *ex, *last_ex;
 	ext4_fsblk_t newblock;
-	int err = 0, depth, ret, cache_type;
+	int i, err = 0, depth, ret, cache_type;
 	unsigned int allocated = 0;
 	struct ext4_allocation_request ar;
 	ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio;
 
-	__clear_bit(BH_New, &bh_result->b_state);
 	ext_debug("blocks %u/%u requested for inode %lu\n",
-			iblock, max_blocks, inode->i_ino);
+		  map->m_lblk, map->m_len, inode->i_ino);
 
 	/* check in cache */
-	cache_type = ext4_ext_in_cache(inode, iblock, &newex);
+	cache_type = ext4_ext_in_cache(inode, map->m_lblk, &newex);
 	if (cache_type) {
 		if (cache_type == EXT4_EXT_CACHE_GAP) {
 			if ((flags & EXT4_GET_BLOCKS_CREATE) == 0) {
@@ -3316,12 +3343,12 @@
 			/* we should allocate requested block */
 		} else if (cache_type == EXT4_EXT_CACHE_EXTENT) {
 			/* block is already allocated */
-			newblock = iblock
+			newblock = map->m_lblk
 				   - le32_to_cpu(newex.ee_block)
 				   + ext_pblock(&newex);
 			/* number of remaining blocks in the extent */
 			allocated = ext4_ext_get_actual_len(&newex) -
-					(iblock - le32_to_cpu(newex.ee_block));
+				(map->m_lblk - le32_to_cpu(newex.ee_block));
 			goto out;
 		} else {
 			BUG();
@@ -3329,7 +3356,7 @@
 	}
 
 	/* find extent for this block */
-	path = ext4_ext_find_extent(inode, iblock, NULL);
+	path = ext4_ext_find_extent(inode, map->m_lblk, NULL);
 	if (IS_ERR(path)) {
 		err = PTR_ERR(path);
 		path = NULL;
@@ -3345,8 +3372,9 @@
 	 */
 	if (unlikely(path[depth].p_ext == NULL && depth != 0)) {
 		EXT4_ERROR_INODE(inode, "bad extent address "
-				 "iblock: %d, depth: %d pblock %lld",
-				 iblock, depth, path[depth].p_block);
+				 "lblock: %lu, depth: %d pblock %lld",
+				 (unsigned long) map->m_lblk, depth,
+				 path[depth].p_block);
 		err = -EIO;
 		goto out2;
 	}
@@ -3364,12 +3392,12 @@
 		 */
 		ee_len = ext4_ext_get_actual_len(ex);
 		/* if found extent covers block, simply return it */
-		if (in_range(iblock, ee_block, ee_len)) {
-			newblock = iblock - ee_block + ee_start;
+		if (in_range(map->m_lblk, ee_block, ee_len)) {
+			newblock = map->m_lblk - ee_block + ee_start;
 			/* number of remaining blocks in the extent */
-			allocated = ee_len - (iblock - ee_block);
-			ext_debug("%u fit into %u:%d -> %llu\n", iblock,
-					ee_block, ee_len, newblock);
+			allocated = ee_len - (map->m_lblk - ee_block);
+			ext_debug("%u fit into %u:%d -> %llu\n", map->m_lblk,
+				  ee_block, ee_len, newblock);
 
 			/* Do not put uninitialized extent in the cache */
 			if (!ext4_ext_is_uninitialized(ex)) {
@@ -3379,8 +3407,8 @@
 				goto out;
 			}
 			ret = ext4_ext_handle_uninitialized_extents(handle,
-					inode, iblock, max_blocks, path,
-					flags, allocated, bh_result, newblock);
+					inode, map, path, flags, allocated,
+					newblock);
 			return ret;
 		}
 	}
@@ -3394,7 +3422,7 @@
 		 * put just found gap into cache to speed up
 		 * subsequent requests
 		 */
-		ext4_ext_put_gap_in_cache(inode, path, iblock);
+		ext4_ext_put_gap_in_cache(inode, path, map->m_lblk);
 		goto out2;
 	}
 	/*
@@ -3402,11 +3430,11 @@
 	 */
 
 	/* find neighbour allocated blocks */
-	ar.lleft = iblock;
+	ar.lleft = map->m_lblk;
 	err = ext4_ext_search_left(inode, path, &ar.lleft, &ar.pleft);
 	if (err)
 		goto out2;
-	ar.lright = iblock;
+	ar.lright = map->m_lblk;
 	err = ext4_ext_search_right(inode, path, &ar.lright, &ar.pright);
 	if (err)
 		goto out2;
@@ -3417,26 +3445,26 @@
 	 * EXT_INIT_MAX_LEN and for an uninitialized extent this limit is
 	 * EXT_UNINIT_MAX_LEN.
 	 */
-	if (max_blocks > EXT_INIT_MAX_LEN &&
+	if (map->m_len > EXT_INIT_MAX_LEN &&
 	    !(flags & EXT4_GET_BLOCKS_UNINIT_EXT))
-		max_blocks = EXT_INIT_MAX_LEN;
-	else if (max_blocks > EXT_UNINIT_MAX_LEN &&
+		map->m_len = EXT_INIT_MAX_LEN;
+	else if (map->m_len > EXT_UNINIT_MAX_LEN &&
 		 (flags & EXT4_GET_BLOCKS_UNINIT_EXT))
-		max_blocks = EXT_UNINIT_MAX_LEN;
+		map->m_len = EXT_UNINIT_MAX_LEN;
 
-	/* Check if we can really insert (iblock)::(iblock+max_blocks) extent */
-	newex.ee_block = cpu_to_le32(iblock);
-	newex.ee_len = cpu_to_le16(max_blocks);
+	/* Check if we can really insert (m_lblk)::(m_lblk + m_len) extent */
+	newex.ee_block = cpu_to_le32(map->m_lblk);
+	newex.ee_len = cpu_to_le16(map->m_len);
 	err = ext4_ext_check_overlap(inode, &newex, path);
 	if (err)
 		allocated = ext4_ext_get_actual_len(&newex);
 	else
-		allocated = max_blocks;
+		allocated = map->m_len;
 
 	/* allocate new block */
 	ar.inode = inode;
-	ar.goal = ext4_ext_find_goal(inode, path, iblock);
-	ar.logical = iblock;
+	ar.goal = ext4_ext_find_goal(inode, path, map->m_lblk);
+	ar.logical = map->m_lblk;
 	ar.len = allocated;
 	if (S_ISREG(inode->i_mode))
 		ar.flags = EXT4_MB_HINT_DATA;
@@ -3470,21 +3498,33 @@
 						     EXT4_STATE_DIO_UNWRITTEN);
 		}
 		if (ext4_should_dioread_nolock(inode))
-			set_buffer_uninit(bh_result);
+			map->m_flags |= EXT4_MAP_UNINIT;
 	}
 
-	if (unlikely(EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL)) {
+	if (unlikely(ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS))) {
 		if (unlikely(!eh->eh_entries)) {
 			EXT4_ERROR_INODE(inode,
-					 "eh->eh_entries == 0 ee_block %d",
-					 ex->ee_block);
+					 "eh->eh_entries == 0 and "
+					 "EOFBLOCKS_FL set");
 			err = -EIO;
 			goto out2;
 		}
 		last_ex = EXT_LAST_EXTENT(eh);
-		if (iblock + ar.len > le32_to_cpu(last_ex->ee_block)
-		    + ext4_ext_get_actual_len(last_ex))
-			EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
+		/*
+		 * If the current leaf block was reached by looking at
+		 * the last index block all the way down the tree, and
+		 * we are extending the inode beyond the last extent
+		 * in the current leaf block, then clear the
+		 * EOFBLOCKS_FL flag.
+		 */
+		for (i = depth-1; i >= 0; i--) {
+			if (path[i].p_idx != EXT_LAST_INDEX(path[i].p_hdr))
+				break;
+		}
+		if ((i < 0) &&
+		    (map->m_lblk + ar.len > le32_to_cpu(last_ex->ee_block) +
+		     ext4_ext_get_actual_len(last_ex)))
+			ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
 	}
 	err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);
 	if (err) {
@@ -3500,9 +3540,9 @@
 	/* previous routine could use block we allocated */
 	newblock = ext_pblock(&newex);
 	allocated = ext4_ext_get_actual_len(&newex);
-	if (allocated > max_blocks)
-		allocated = max_blocks;
-	set_buffer_new(bh_result);
+	if (allocated > map->m_len)
+		allocated = map->m_len;
+	map->m_flags |= EXT4_MAP_NEW;
 
 	/*
 	 * Update reserved blocks/metadata blocks after successful
@@ -3516,18 +3556,18 @@
 	 * when it is _not_ an uninitialized extent.
 	 */
 	if ((flags & EXT4_GET_BLOCKS_UNINIT_EXT) == 0) {
-		ext4_ext_put_in_cache(inode, iblock, allocated, newblock,
+		ext4_ext_put_in_cache(inode, map->m_lblk, allocated, newblock,
 						EXT4_EXT_CACHE_EXTENT);
 		ext4_update_inode_fsync_trans(handle, inode, 1);
 	} else
 		ext4_update_inode_fsync_trans(handle, inode, 0);
 out:
-	if (allocated > max_blocks)
-		allocated = max_blocks;
+	if (allocated > map->m_len)
+		allocated = map->m_len;
 	ext4_ext_show_leaf(inode, path);
-	set_buffer_mapped(bh_result);
-	bh_result->b_bdev = inode->i_sb->s_bdev;
-	bh_result->b_blocknr = newblock;
+	map->m_flags |= EXT4_MAP_MAPPED;
+	map->m_pblk = newblock;
+	map->m_len = allocated;
 out2:
 	if (path) {
 		ext4_ext_drop_refs(path);
@@ -3625,7 +3665,7 @@
 		 * can proceed even if the new size is the same as i_size.
 		 */
 		if (new_size > i_size_read(inode))
-			EXT4_I(inode)->i_flags |= EXT4_EOFBLOCKS_FL;
+			ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
 	}
 
 }
@@ -3640,55 +3680,57 @@
 long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
 {
 	handle_t *handle;
-	ext4_lblk_t block;
 	loff_t new_size;
 	unsigned int max_blocks;
 	int ret = 0;
 	int ret2 = 0;
 	int retries = 0;
-	struct buffer_head map_bh;
+	struct ext4_map_blocks map;
 	unsigned int credits, blkbits = inode->i_blkbits;
 
 	/*
 	 * currently supporting (pre)allocate mode for extent-based
 	 * files _only_
 	 */
-	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return -EOPNOTSUPP;
 
 	/* preallocation to directories is currently not supported */
 	if (S_ISDIR(inode->i_mode))
 		return -ENODEV;
 
-	block = offset >> blkbits;
+	map.m_lblk = offset >> blkbits;
 	/*
 	 * We can't just convert len to max_blocks because
 	 * If blocksize = 4096 offset = 3072 and len = 2048
 	 */
 	max_blocks = (EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits)
-							- block;
+		- map.m_lblk;
 	/*
 	 * credits to insert 1 extent into extent tree
 	 */
 	credits = ext4_chunk_trans_blocks(inode, max_blocks);
 	mutex_lock(&inode->i_mutex);
+	ret = inode_newsize_ok(inode, (len + offset));
+	if (ret) {
+		mutex_unlock(&inode->i_mutex);
+		return ret;
+	}
 retry:
 	while (ret >= 0 && ret < max_blocks) {
-		block = block + ret;
-		max_blocks = max_blocks - ret;
+		map.m_lblk = map.m_lblk + ret;
+		map.m_len = max_blocks = max_blocks - ret;
 		handle = ext4_journal_start(inode, credits);
 		if (IS_ERR(handle)) {
 			ret = PTR_ERR(handle);
 			break;
 		}
-		map_bh.b_state = 0;
-		ret = ext4_get_blocks(handle, inode, block,
-				      max_blocks, &map_bh,
+		ret = ext4_map_blocks(handle, inode, &map,
 				      EXT4_GET_BLOCKS_CREATE_UNINIT_EXT);
 		if (ret <= 0) {
 #ifdef EXT4FS_DEBUG
 			WARN_ON(ret <= 0);
-			printk(KERN_ERR "%s: ext4_ext_get_blocks "
+			printk(KERN_ERR "%s: ext4_ext_map_blocks "
 				    "returned error inode#%lu, block=%u, "
 				    "max_blocks=%u", __func__,
 				    inode->i_ino, block, max_blocks);
@@ -3697,14 +3739,14 @@
 			ret2 = ext4_journal_stop(handle);
 			break;
 		}
-		if ((block + ret) >= (EXT4_BLOCK_ALIGN(offset + len,
+		if ((map.m_lblk + ret) >= (EXT4_BLOCK_ALIGN(offset + len,
 						blkbits) >> blkbits))
 			new_size = offset + len;
 		else
-			new_size = (block + ret) << blkbits;
+			new_size = (map.m_lblk + ret) << blkbits;
 
 		ext4_falloc_update_inode(inode, mode, new_size,
-						buffer_new(&map_bh));
+					 (map.m_flags & EXT4_MAP_NEW));
 		ext4_mark_inode_dirty(handle, inode);
 		ret2 = ext4_journal_stop(handle);
 		if (ret2)
@@ -3733,42 +3775,39 @@
 				    ssize_t len)
 {
 	handle_t *handle;
-	ext4_lblk_t block;
 	unsigned int max_blocks;
 	int ret = 0;
 	int ret2 = 0;
-	struct buffer_head map_bh;
+	struct ext4_map_blocks map;
 	unsigned int credits, blkbits = inode->i_blkbits;
 
-	block = offset >> blkbits;
+	map.m_lblk = offset >> blkbits;
 	/*
 	 * We can't just convert len to max_blocks because
 	 * If blocksize = 4096 offset = 3072 and len = 2048
 	 */
-	max_blocks = (EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits)
-							- block;
+	max_blocks = ((EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits) -
+		      map.m_lblk);
 	/*
 	 * credits to insert 1 extent into extent tree
 	 */
 	credits = ext4_chunk_trans_blocks(inode, max_blocks);
 	while (ret >= 0 && ret < max_blocks) {
-		block = block + ret;
-		max_blocks = max_blocks - ret;
+		map.m_lblk += ret;
+		map.m_len = (max_blocks -= ret);
 		handle = ext4_journal_start(inode, credits);
 		if (IS_ERR(handle)) {
 			ret = PTR_ERR(handle);
 			break;
 		}
-		map_bh.b_state = 0;
-		ret = ext4_get_blocks(handle, inode, block,
-				      max_blocks, &map_bh,
+		ret = ext4_map_blocks(handle, inode, &map,
 				      EXT4_GET_BLOCKS_IO_CONVERT_EXT);
 		if (ret <= 0) {
 			WARN_ON(ret <= 0);
-			printk(KERN_ERR "%s: ext4_ext_get_blocks "
+			printk(KERN_ERR "%s: ext4_ext_map_blocks "
 				    "returned error inode#%lu, block=%u, "
 				    "max_blocks=%u", __func__,
-				    inode->i_ino, block, max_blocks);
+				    inode->i_ino, map.m_lblk, map.m_len);
 		}
 		ext4_mark_inode_dirty(handle, inode);
 		ret2 = ext4_journal_stop(handle);
@@ -3898,7 +3937,7 @@
 	int error = 0;
 
 	/* fallback to generic here if not in extents fmt */
-	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return generic_block_fiemap(inode, fieinfo, start, len,
 			ext4_get_block);
 
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index d0776e4..5313ae4 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -66,7 +66,7 @@
 	 * is smaller than s_maxbytes, which is for extent-mapped files.
 	 */
 
-	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)) {
+	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
 		struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 		size_t length = iov_length(iov, nr_segs);
 
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index ef3d980..592adf2 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -35,6 +35,29 @@
 #include <trace/events/ext4.h>
 
 /*
+ * If we're not journaling and this is a just-created file, we have to
+ * sync our parent directory (if it was freshly created) since
+ * otherwise it will only be written by writeback, leaving a huge
+ * window during which a crash may lose the file.  This may apply for
+ * the parent directory's parent as well, and so on recursively, if
+ * they are also freshly created.
+ */
+static void ext4_sync_parent(struct inode *inode)
+{
+	struct dentry *dentry = NULL;
+
+	while (inode && ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) {
+		ext4_clear_inode_state(inode, EXT4_STATE_NEWENTRY);
+		dentry = list_entry(inode->i_dentry.next,
+				    struct dentry, d_alias);
+		if (!dentry || !dentry->d_parent || !dentry->d_parent->d_inode)
+			break;
+		inode = dentry->d_parent->d_inode;
+		sync_mapping_buffers(inode->i_mapping);
+	}
+}
+
+/*
  * akpm: A new design for ext4_sync_file().
  *
  * This is only called from sys_fsync(), sys_fdatasync() and sys_msync().
@@ -48,9 +71,9 @@
  * i_mutex lock is held when entering and exiting this function
  */
 
-int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
+int ext4_sync_file(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	struct ext4_inode_info *ei = EXT4_I(inode);
 	journal_t *journal = EXT4_SB(inode->i_sb)->s_journal;
 	int ret;
@@ -58,7 +81,7 @@
 
 	J_ASSERT(ext4_journal_current_handle() == NULL);
 
-	trace_ext4_sync_file(file, dentry, datasync);
+	trace_ext4_sync_file(file, datasync);
 
 	if (inode->i_sb->s_flags & MS_RDONLY)
 		return 0;
@@ -66,9 +89,13 @@
 	ret = flush_completed_IO(inode);
 	if (ret < 0)
 		return ret;
-	
-	if (!journal)
-		return simple_fsync(file, dentry, datasync);
+
+	if (!journal) {
+		ret = generic_file_fsync(file, datasync);
+		if (!ret && !list_empty(&inode->i_dentry))
+			ext4_sync_parent(inode);
+		return ret;
+	}
 
 	/*
 	 * data=writeback,ordered:
@@ -102,7 +129,7 @@
 		    (journal->j_flags & JBD2_BARRIER))
 			blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL,
 					NULL, BLKDEV_IFL_WAIT);
-		jbd2_log_wait_commit(journal, commit_tid);
+		ret = jbd2_log_wait_commit(journal, commit_tid);
 	} else if (journal->j_flags & JBD2_BARRIER)
 		blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL,
 			BLKDEV_IFL_WAIT);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 1a0e183..25c4b31 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -240,56 +240,49 @@
 	if (fatal)
 		goto error_return;
 
-	/* Ok, now we can actually update the inode bitmaps.. */
-	cleared = ext4_clear_bit_atomic(ext4_group_lock_ptr(sb, block_group),
-					bit, bitmap_bh->b_data);
-	if (!cleared)
-		ext4_error(sb, "bit already cleared for inode %lu", ino);
-	else {
-		gdp = ext4_get_group_desc(sb, block_group, &bh2);
-
+	fatal = -ESRCH;
+	gdp = ext4_get_group_desc(sb, block_group, &bh2);
+	if (gdp) {
 		BUFFER_TRACE(bh2, "get_write_access");
 		fatal = ext4_journal_get_write_access(handle, bh2);
-		if (fatal) goto error_return;
-
-		if (gdp) {
-			ext4_lock_group(sb, block_group);
-			count = ext4_free_inodes_count(sb, gdp) + 1;
-			ext4_free_inodes_set(sb, gdp, count);
-			if (is_directory) {
-				count = ext4_used_dirs_count(sb, gdp) - 1;
-				ext4_used_dirs_set(sb, gdp, count);
-				if (sbi->s_log_groups_per_flex) {
-					ext4_group_t f;
-
-					f = ext4_flex_group(sbi, block_group);
-					atomic_dec(&sbi->s_flex_groups[f].used_dirs);
-				}
-
-			}
-			gdp->bg_checksum = ext4_group_desc_csum(sbi,
-							block_group, gdp);
-			ext4_unlock_group(sb, block_group);
-			percpu_counter_inc(&sbi->s_freeinodes_counter);
-			if (is_directory)
-				percpu_counter_dec(&sbi->s_dirs_counter);
-
-			if (sbi->s_log_groups_per_flex) {
-				ext4_group_t f;
-
-				f = ext4_flex_group(sbi, block_group);
-				atomic_inc(&sbi->s_flex_groups[f].free_inodes);
-			}
-		}
-		BUFFER_TRACE(bh2, "call ext4_handle_dirty_metadata");
-		err = ext4_handle_dirty_metadata(handle, NULL, bh2);
-		if (!fatal) fatal = err;
 	}
-	BUFFER_TRACE(bitmap_bh, "call ext4_handle_dirty_metadata");
-	err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
-	if (!fatal)
-		fatal = err;
-	sb->s_dirt = 1;
+	ext4_lock_group(sb, block_group);
+	cleared = ext4_clear_bit(bit, bitmap_bh->b_data);
+	if (fatal || !cleared) {
+		ext4_unlock_group(sb, block_group);
+		goto out;
+	}
+
+	count = ext4_free_inodes_count(sb, gdp) + 1;
+	ext4_free_inodes_set(sb, gdp, count);
+	if (is_directory) {
+		count = ext4_used_dirs_count(sb, gdp) - 1;
+		ext4_used_dirs_set(sb, gdp, count);
+		percpu_counter_dec(&sbi->s_dirs_counter);
+	}
+	gdp->bg_checksum = ext4_group_desc_csum(sbi, block_group, gdp);
+	ext4_unlock_group(sb, block_group);
+
+	percpu_counter_inc(&sbi->s_freeinodes_counter);
+	if (sbi->s_log_groups_per_flex) {
+		ext4_group_t f = ext4_flex_group(sbi, block_group);
+
+		atomic_inc(&sbi->s_flex_groups[f].free_inodes);
+		if (is_directory)
+			atomic_dec(&sbi->s_flex_groups[f].used_dirs);
+	}
+	BUFFER_TRACE(bh2, "call ext4_handle_dirty_metadata");
+	fatal = ext4_handle_dirty_metadata(handle, NULL, bh2);
+out:
+	if (cleared) {
+		BUFFER_TRACE(bitmap_bh, "call ext4_handle_dirty_metadata");
+		err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
+		if (!fatal)
+			fatal = err;
+		sb->s_dirt = 1;
+	} else
+		ext4_error(sb, "bit already cleared for inode %lu", ino);
+
 error_return:
 	brelse(bitmap_bh);
 	ext4_std_error(sb, fatal);
@@ -499,7 +492,7 @@
 
 	if (S_ISDIR(mode) &&
 	    ((parent == sb->s_root->d_inode) ||
-	     (EXT4_I(parent)->i_flags & EXT4_TOPDIR_FL))) {
+	     (ext4_test_inode_flag(parent, EXT4_INODE_TOPDIR)))) {
 		int best_ndir = inodes_per_group;
 		int ret = -1;
 
@@ -1041,7 +1034,7 @@
 	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
 		/* set extent flag only for directory, file and normal symlink*/
 		if (S_ISDIR(mode) || S_ISREG(mode) || S_ISLNK(mode)) {
-			EXT4_I(inode)->i_flags |= EXT4_EXTENTS_FL;
+			ext4_set_inode_flag(inode, EXT4_INODE_EXTENTS);
 			ext4_ext_tree_init(handle, inode);
 		}
 	}
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 3e0f6af..19df61c 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -149,7 +149,7 @@
 	int ret;
 
 	/*
-	 * Drop i_data_sem to avoid deadlock with ext4_get_blocks At this
+	 * Drop i_data_sem to avoid deadlock with ext4_map_blocks.  At this
 	 * moment, get_block can be called only for blocks inside i_size since
 	 * page cache has been already dropped and writes are blocked by
 	 * i_mutex. So we can safely drop the i_data_sem here.
@@ -348,9 +348,8 @@
 		if (blk &&
 		    unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),
 						    blk, 1))) {
-			__ext4_error(inode->i_sb, function,
-				   "invalid block reference %u "
-				   "in inode #%lu", blk, inode->i_ino);
+			ext4_error_inode(function, inode,
+					 "invalid block reference %u", blk);
 			return -EIO;
 		}
 	}
@@ -785,7 +784,7 @@
 	/* Allocation failed, free what we already allocated */
 	ext4_free_blocks(handle, inode, 0, new_blocks[0], 1, 0);
 	for (i = 1; i <= n ; i++) {
-		/* 
+		/*
 		 * branch[i].bh is newly allocated, so there is no
 		 * need to revoke the block, which is why we don't
 		 * need to set EXT4_FREE_BLOCKS_METADATA.
@@ -875,7 +874,7 @@
 
 err_out:
 	for (i = 1; i <= num; i++) {
-		/* 
+		/*
 		 * branch[i].bh is newly allocated, so there is no
 		 * need to revoke the block, which is why we don't
 		 * need to set EXT4_FREE_BLOCKS_METADATA.
@@ -890,9 +889,9 @@
 }
 
 /*
- * The ext4_ind_get_blocks() function handles non-extents inodes
+ * The ext4_ind_map_blocks() function handles non-extents inodes
  * (i.e., using the traditional indirect/double-indirect i_blocks
- * scheme) for ext4_get_blocks().
+ * scheme) for ext4_map_blocks().
  *
  * Allocation strategy is simple: if we have to allocate something, we will
  * have to go the whole way to leaf. So let's do it before attaching anything
@@ -917,9 +916,8 @@
  * down_read(&EXT4_I(inode)->i_data_sem) if not allocating file system
  * blocks.
  */
-static int ext4_ind_get_blocks(handle_t *handle, struct inode *inode,
-			       ext4_lblk_t iblock, unsigned int maxblocks,
-			       struct buffer_head *bh_result,
+static int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
+			       struct ext4_map_blocks *map,
 			       int flags)
 {
 	int err = -EIO;
@@ -933,9 +931,9 @@
 	int count = 0;
 	ext4_fsblk_t first_block = 0;
 
-	J_ASSERT(!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL));
+	J_ASSERT(!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)));
 	J_ASSERT(handle != NULL || (flags & EXT4_GET_BLOCKS_CREATE) == 0);
-	depth = ext4_block_to_path(inode, iblock, offsets,
+	depth = ext4_block_to_path(inode, map->m_lblk, offsets,
 				   &blocks_to_boundary);
 
 	if (depth == 0)
@@ -946,10 +944,9 @@
 	/* Simplest case - block found, no allocation needed */
 	if (!partial) {
 		first_block = le32_to_cpu(chain[depth - 1].key);
-		clear_buffer_new(bh_result);
 		count++;
 		/*map more blocks*/
-		while (count < maxblocks && count <= blocks_to_boundary) {
+		while (count < map->m_len && count <= blocks_to_boundary) {
 			ext4_fsblk_t blk;
 
 			blk = le32_to_cpu(*(chain[depth-1].p + count));
@@ -969,7 +966,7 @@
 	/*
 	 * Okay, we need to do block allocation.
 	*/
-	goal = ext4_find_goal(inode, iblock, partial);
+	goal = ext4_find_goal(inode, map->m_lblk, partial);
 
 	/* the number of blocks need to allocate for [d,t]indirect blocks */
 	indirect_blks = (chain + depth) - partial - 1;
@@ -979,11 +976,11 @@
 	 * direct blocks to allocate for this branch.
 	 */
 	count = ext4_blks_to_allocate(partial, indirect_blks,
-					maxblocks, blocks_to_boundary);
+				      map->m_len, blocks_to_boundary);
 	/*
 	 * Block out ext4_truncate while we alter the tree
 	 */
-	err = ext4_alloc_branch(handle, inode, iblock, indirect_blks,
+	err = ext4_alloc_branch(handle, inode, map->m_lblk, indirect_blks,
 				&count, goal,
 				offsets + (partial - chain), partial);
 
@@ -995,18 +992,20 @@
 	 * may need to return -EAGAIN upwards in the worst case.  --sct
 	 */
 	if (!err)
-		err = ext4_splice_branch(handle, inode, iblock,
+		err = ext4_splice_branch(handle, inode, map->m_lblk,
 					 partial, indirect_blks, count);
 	if (err)
 		goto cleanup;
 
-	set_buffer_new(bh_result);
+	map->m_flags |= EXT4_MAP_NEW;
 
 	ext4_update_inode_fsync_trans(handle, inode, 1);
 got_it:
-	map_bh(bh_result, inode->i_sb, le32_to_cpu(chain[depth-1].key));
+	map->m_flags |= EXT4_MAP_MAPPED;
+	map->m_pblk = le32_to_cpu(chain[depth-1].key);
+	map->m_len = count;
 	if (count > blocks_to_boundary)
-		set_buffer_boundary(bh_result);
+		map->m_flags |= EXT4_MAP_BOUNDARY;
 	err = count;
 	/* Clean up and exit */
 	partial = chain + depth - 1;	/* the whole chain */
@@ -1016,7 +1015,6 @@
 		brelse(partial->bh);
 		partial--;
 	}
-	BUFFER_TRACE(bh_result, "returned");
 out:
 	return err;
 }
@@ -1061,7 +1059,7 @@
  */
 static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock)
 {
-	if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
+	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
 		return ext4_ext_calc_metadata_amount(inode, lblock);
 
 	return ext4_indirect_calc_metadata_amount(inode, lblock);
@@ -1076,7 +1074,6 @@
 {
 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 	struct ext4_inode_info *ei = EXT4_I(inode);
-	int mdb_free = 0, allocated_meta_blocks = 0;
 
 	spin_lock(&ei->i_block_reservation_lock);
 	trace_ext4_da_update_reserve_space(inode, used);
@@ -1091,11 +1088,10 @@
 
 	/* Update per-inode reservations */
 	ei->i_reserved_data_blocks -= used;
-	used += ei->i_allocated_meta_blocks;
 	ei->i_reserved_meta_blocks -= ei->i_allocated_meta_blocks;
-	allocated_meta_blocks = ei->i_allocated_meta_blocks;
+	percpu_counter_sub(&sbi->s_dirtyblocks_counter,
+			   used + ei->i_allocated_meta_blocks);
 	ei->i_allocated_meta_blocks = 0;
-	percpu_counter_sub(&sbi->s_dirtyblocks_counter, used);
 
 	if (ei->i_reserved_data_blocks == 0) {
 		/*
@@ -1103,30 +1099,23 @@
 		 * only when we have written all of the delayed
 		 * allocation blocks.
 		 */
-		mdb_free = ei->i_reserved_meta_blocks;
+		percpu_counter_sub(&sbi->s_dirtyblocks_counter,
+				   ei->i_reserved_meta_blocks);
 		ei->i_reserved_meta_blocks = 0;
 		ei->i_da_metadata_calc_len = 0;
-		percpu_counter_sub(&sbi->s_dirtyblocks_counter, mdb_free);
 	}
 	spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
 
-	/* Update quota subsystem */
-	if (quota_claim) {
+	/* Update quota subsystem for data blocks */
+	if (quota_claim)
 		dquot_claim_block(inode, used);
-		if (mdb_free)
-			dquot_release_reservation_block(inode, mdb_free);
-	} else {
+	else {
 		/*
 		 * We did fallocate with an offset that is already delayed
 		 * allocated. So on delayed allocated writeback we should
-		 * not update the quota for allocated blocks. But then
-		 * converting an fallocate region to initialized region would
-		 * have caused a metadata allocation. So claim quota for
-		 * that
+		 * not re-claim the quota for fallocated blocks.
 		 */
-		if (allocated_meta_blocks)
-			dquot_claim_block(inode, allocated_meta_blocks);
-		dquot_release_reservation_block(inode, mdb_free + used);
+		dquot_release_reservation_block(inode, used);
 	}
 
 	/*
@@ -1139,15 +1128,15 @@
 		ext4_discard_preallocations(inode);
 }
 
-static int check_block_validity(struct inode *inode, const char *msg,
-				sector_t logical, sector_t phys, int len)
+static int check_block_validity(struct inode *inode, const char *func,
+				struct ext4_map_blocks *map)
 {
-	if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), phys, len)) {
-		__ext4_error(inode->i_sb, msg,
-			   "inode #%lu logical block %llu mapped to %llu "
-			   "(size %d)", inode->i_ino,
-			   (unsigned long long) logical,
-			   (unsigned long long) phys, len);
+	if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), map->m_pblk,
+				   map->m_len)) {
+		ext4_error_inode(func, inode,
+			   "lblock %lu mapped to illegal pblock %llu "
+			   "(length %d)", (unsigned long) map->m_lblk,
+				 map->m_pblk, map->m_len);
 		return -EIO;
 	}
 	return 0;
@@ -1212,15 +1201,15 @@
 }
 
 /*
- * The ext4_get_blocks() function tries to look up the requested blocks,
+ * The ext4_map_blocks() function tries to look up the requested blocks,
  * and returns if the blocks are already mapped.
  *
  * Otherwise it takes the write lock of the i_data_sem and allocate blocks
  * and store the allocated blocks in the result buffer head and mark it
  * mapped.
  *
- * If file type is extents based, it will call ext4_ext_get_blocks(),
- * Otherwise, call with ext4_ind_get_blocks() to handle indirect mapping
+ * If file type is extents based, it will call ext4_ext_map_blocks(),
+ * Otherwise, call with ext4_ind_map_blocks() to handle indirect mapping
  * based files
  *
  * On success, it returns the number of blocks being mapped or allocate.
@@ -1233,35 +1222,29 @@
  *
  * It returns the error in case of allocation failure.
  */
-int ext4_get_blocks(handle_t *handle, struct inode *inode, sector_t block,
-		    unsigned int max_blocks, struct buffer_head *bh,
-		    int flags)
+int ext4_map_blocks(handle_t *handle, struct inode *inode,
+		    struct ext4_map_blocks *map, int flags)
 {
 	int retval;
 
-	clear_buffer_mapped(bh);
-	clear_buffer_unwritten(bh);
-
-	ext_debug("ext4_get_blocks(): inode %lu, flag %d, max_blocks %u,"
-		  "logical block %lu\n", inode->i_ino, flags, max_blocks,
-		  (unsigned long)block);
+	map->m_flags = 0;
+	ext_debug("ext4_map_blocks(): inode %lu, flag %d, max_blocks %u,"
+		  "logical block %lu\n", inode->i_ino, flags, map->m_len,
+		  (unsigned long) map->m_lblk);
 	/*
 	 * Try to see if we can get the block without requesting a new
 	 * file system block.
 	 */
 	down_read((&EXT4_I(inode)->i_data_sem));
-	if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
-		retval =  ext4_ext_get_blocks(handle, inode, block, max_blocks,
-				bh, 0);
+	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
+		retval = ext4_ext_map_blocks(handle, inode, map, 0);
 	} else {
-		retval = ext4_ind_get_blocks(handle, inode, block, max_blocks,
-					     bh, 0);
+		retval = ext4_ind_map_blocks(handle, inode, map, 0);
 	}
 	up_read((&EXT4_I(inode)->i_data_sem));
 
-	if (retval > 0 && buffer_mapped(bh)) {
-		int ret = check_block_validity(inode, "file system corruption",
-					       block, bh->b_blocknr, retval);
+	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {
+		int ret = check_block_validity(inode, __func__, map);
 		if (ret != 0)
 			return ret;
 	}
@@ -1277,7 +1260,7 @@
 	 * ext4_ext_get_block() returns th create = 0
 	 * with buffer head unmapped.
 	 */
-	if (retval > 0 && buffer_mapped(bh))
+	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED)
 		return retval;
 
 	/*
@@ -1290,7 +1273,7 @@
 	 * of BH_Unwritten and BH_Mapped flags being simultaneously
 	 * set on the buffer_head.
 	 */
-	clear_buffer_unwritten(bh);
+	map->m_flags &= ~EXT4_MAP_UNWRITTEN;
 
 	/*
 	 * New blocks allocate and/or writing to uninitialized extent
@@ -1312,14 +1295,12 @@
 	 * We need to check for EXT4 here because migrate
 	 * could have changed the inode type in between
 	 */
-	if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
-		retval =  ext4_ext_get_blocks(handle, inode, block, max_blocks,
-					      bh, flags);
+	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
+		retval = ext4_ext_map_blocks(handle, inode, map, flags);
 	} else {
-		retval = ext4_ind_get_blocks(handle, inode, block,
-					     max_blocks, bh, flags);
+		retval = ext4_ind_map_blocks(handle, inode, map, flags);
 
-		if (retval > 0 && buffer_new(bh)) {
+		if (retval > 0 && map->m_flags & EXT4_MAP_NEW) {
 			/*
 			 * We allocated new blocks which will result in
 			 * i_data's format changing.  Force the migrate
@@ -1342,10 +1323,10 @@
 		EXT4_I(inode)->i_delalloc_reserved_flag = 0;
 
 	up_write((&EXT4_I(inode)->i_data_sem));
-	if (retval > 0 && buffer_mapped(bh)) {
-		int ret = check_block_validity(inode, "file system "
-					       "corruption after allocation",
-					       block, bh->b_blocknr, retval);
+	if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {
+		int ret = check_block_validity(inode,
+					       "ext4_map_blocks_after_alloc",
+					       map);
 		if (ret != 0)
 			return ret;
 	}
@@ -1355,109 +1336,109 @@
 /* Maximum number of blocks we map for direct IO at once. */
 #define DIO_MAX_BLOCKS 4096
 
-int ext4_get_block(struct inode *inode, sector_t iblock,
-		   struct buffer_head *bh_result, int create)
+static int _ext4_get_block(struct inode *inode, sector_t iblock,
+			   struct buffer_head *bh, int flags)
 {
 	handle_t *handle = ext4_journal_current_handle();
+	struct ext4_map_blocks map;
 	int ret = 0, started = 0;
-	unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
 	int dio_credits;
 
-	if (create && !handle) {
+	map.m_lblk = iblock;
+	map.m_len = bh->b_size >> inode->i_blkbits;
+
+	if (flags && !handle) {
 		/* Direct IO write... */
-		if (max_blocks > DIO_MAX_BLOCKS)
-			max_blocks = DIO_MAX_BLOCKS;
-		dio_credits = ext4_chunk_trans_blocks(inode, max_blocks);
+		if (map.m_len > DIO_MAX_BLOCKS)
+			map.m_len = DIO_MAX_BLOCKS;
+		dio_credits = ext4_chunk_trans_blocks(inode, map.m_len);
 		handle = ext4_journal_start(inode, dio_credits);
 		if (IS_ERR(handle)) {
 			ret = PTR_ERR(handle);
-			goto out;
+			return ret;
 		}
 		started = 1;
 	}
 
-	ret = ext4_get_blocks(handle, inode, iblock, max_blocks, bh_result,
-			      create ? EXT4_GET_BLOCKS_CREATE : 0);
+	ret = ext4_map_blocks(handle, inode, &map, flags);
 	if (ret > 0) {
-		bh_result->b_size = (ret << inode->i_blkbits);
+		map_bh(bh, inode->i_sb, map.m_pblk);
+		bh->b_state = (bh->b_state & ~EXT4_MAP_FLAGS) | map.m_flags;
+		bh->b_size = inode->i_sb->s_blocksize * map.m_len;
 		ret = 0;
 	}
 	if (started)
 		ext4_journal_stop(handle);
-out:
 	return ret;
 }
 
+int ext4_get_block(struct inode *inode, sector_t iblock,
+		   struct buffer_head *bh, int create)
+{
+	return _ext4_get_block(inode, iblock, bh,
+			       create ? EXT4_GET_BLOCKS_CREATE : 0);
+}
+
 /*
  * `handle' can be NULL if create is zero
  */
 struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode,
 				ext4_lblk_t block, int create, int *errp)
 {
-	struct buffer_head dummy;
+	struct ext4_map_blocks map;
+	struct buffer_head *bh;
 	int fatal = 0, err;
-	int flags = 0;
 
 	J_ASSERT(handle != NULL || create == 0);
 
-	dummy.b_state = 0;
-	dummy.b_blocknr = -1000;
-	buffer_trace_init(&dummy.b_history);
-	if (create)
-		flags |= EXT4_GET_BLOCKS_CREATE;
-	err = ext4_get_blocks(handle, inode, block, 1, &dummy, flags);
-	/*
-	 * ext4_get_blocks() returns number of blocks mapped. 0 in
-	 * case of a HOLE.
-	 */
-	if (err > 0) {
-		if (err > 1)
-			WARN_ON(1);
-		err = 0;
-	}
-	*errp = err;
-	if (!err && buffer_mapped(&dummy)) {
-		struct buffer_head *bh;
-		bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
-		if (!bh) {
-			*errp = -EIO;
-			goto err;
-		}
-		if (buffer_new(&dummy)) {
-			J_ASSERT(create != 0);
-			J_ASSERT(handle != NULL);
+	map.m_lblk = block;
+	map.m_len = 1;
+	err = ext4_map_blocks(handle, inode, &map,
+			      create ? EXT4_GET_BLOCKS_CREATE : 0);
 
-			/*
-			 * Now that we do not always journal data, we should
-			 * keep in mind whether this should always journal the
-			 * new buffer as metadata.  For now, regular file
-			 * writes use ext4_get_block instead, so it's not a
-			 * problem.
-			 */
-			lock_buffer(bh);
-			BUFFER_TRACE(bh, "call get_create_access");
-			fatal = ext4_journal_get_create_access(handle, bh);
-			if (!fatal && !buffer_uptodate(bh)) {
-				memset(bh->b_data, 0, inode->i_sb->s_blocksize);
-				set_buffer_uptodate(bh);
-			}
-			unlock_buffer(bh);
-			BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
-			err = ext4_handle_dirty_metadata(handle, inode, bh);
-			if (!fatal)
-				fatal = err;
-		} else {
-			BUFFER_TRACE(bh, "not a new buffer");
-		}
-		if (fatal) {
-			*errp = fatal;
-			brelse(bh);
-			bh = NULL;
-		}
-		return bh;
+	if (err < 0)
+		*errp = err;
+	if (err <= 0)
+		return NULL;
+	*errp = 0;
+
+	bh = sb_getblk(inode->i_sb, map.m_pblk);
+	if (!bh) {
+		*errp = -EIO;
+		return NULL;
 	}
-err:
-	return NULL;
+	if (map.m_flags & EXT4_MAP_NEW) {
+		J_ASSERT(create != 0);
+		J_ASSERT(handle != NULL);
+
+		/*
+		 * Now that we do not always journal data, we should
+		 * keep in mind whether this should always journal the
+		 * new buffer as metadata.  For now, regular file
+		 * writes use ext4_get_block instead, so it's not a
+		 * problem.
+		 */
+		lock_buffer(bh);
+		BUFFER_TRACE(bh, "call get_create_access");
+		fatal = ext4_journal_get_create_access(handle, bh);
+		if (!fatal && !buffer_uptodate(bh)) {
+			memset(bh->b_data, 0, inode->i_sb->s_blocksize);
+			set_buffer_uptodate(bh);
+		}
+		unlock_buffer(bh);
+		BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+		err = ext4_handle_dirty_metadata(handle, inode, bh);
+		if (!fatal)
+			fatal = err;
+	} else {
+		BUFFER_TRACE(bh, "not a new buffer");
+	}
+	if (fatal) {
+		*errp = fatal;
+		brelse(bh);
+		bh = NULL;
+	}
+	return bh;
 }
 
 struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode,
@@ -1860,7 +1841,7 @@
 	int retries = 0;
 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 	struct ext4_inode_info *ei = EXT4_I(inode);
-	unsigned long md_needed, md_reserved;
+	unsigned long md_needed;
 	int ret;
 
 	/*
@@ -1870,22 +1851,24 @@
 	 */
 repeat:
 	spin_lock(&ei->i_block_reservation_lock);
-	md_reserved = ei->i_reserved_meta_blocks;
 	md_needed = ext4_calc_metadata_amount(inode, lblock);
 	trace_ext4_da_reserve_space(inode, md_needed);
 	spin_unlock(&ei->i_block_reservation_lock);
 
 	/*
-	 * Make quota reservation here to prevent quota overflow
-	 * later. Real quota accounting is done at pages writeout
-	 * time.
+	 * We will charge metadata quota at writeout time; this saves
+	 * us from metadata over-estimation, though we may go over by
+	 * a small amount in the end.  Here we just reserve for data.
 	 */
-	ret = dquot_reserve_block(inode, md_needed + 1);
+	ret = dquot_reserve_block(inode, 1);
 	if (ret)
 		return ret;
-
+	/*
+	 * We do still charge estimated metadata to the sb though;
+	 * we cannot afford to run out of free blocks.
+	 */
 	if (ext4_claim_free_blocks(sbi, md_needed + 1)) {
-		dquot_release_reservation_block(inode, md_needed + 1);
+		dquot_release_reservation_block(inode, 1);
 		if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
 			yield();
 			goto repeat;
@@ -1910,6 +1893,7 @@
 
 	spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
 
+	trace_ext4_da_release_space(inode, to_free);
 	if (unlikely(to_free > ei->i_reserved_data_blocks)) {
 		/*
 		 * if there aren't enough reserved blocks, then the
@@ -1932,12 +1916,13 @@
 		 * only when we have written all of the delayed
 		 * allocation blocks.
 		 */
-		to_free += ei->i_reserved_meta_blocks;
+		percpu_counter_sub(&sbi->s_dirtyblocks_counter,
+				   ei->i_reserved_meta_blocks);
 		ei->i_reserved_meta_blocks = 0;
 		ei->i_da_metadata_calc_len = 0;
 	}
 
-	/* update fs dirty blocks counter */
+	/* update fs dirty data blocks counter */
 	percpu_counter_sub(&sbi->s_dirtyblocks_counter, to_free);
 
 	spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
@@ -2042,28 +2027,23 @@
 /*
  * mpage_put_bnr_to_bhs - walk blocks and assign them actual numbers
  *
- * @mpd->inode - inode to walk through
- * @exbh->b_blocknr - first block on a disk
- * @exbh->b_size - amount of space in bytes
- * @logical - first logical block to start assignment with
- *
  * the function goes through all passed space and put actual disk
  * block numbers into buffer heads, dropping BH_Delay and BH_Unwritten
  */
-static void mpage_put_bnr_to_bhs(struct mpage_da_data *mpd, sector_t logical,
-				 struct buffer_head *exbh)
+static void mpage_put_bnr_to_bhs(struct mpage_da_data *mpd,
+				 struct ext4_map_blocks *map)
 {
 	struct inode *inode = mpd->inode;
 	struct address_space *mapping = inode->i_mapping;
-	int blocks = exbh->b_size >> inode->i_blkbits;
-	sector_t pblock = exbh->b_blocknr, cur_logical;
+	int blocks = map->m_len;
+	sector_t pblock = map->m_pblk, cur_logical;
 	struct buffer_head *head, *bh;
 	pgoff_t index, end;
 	struct pagevec pvec;
 	int nr_pages, i;
 
-	index = logical >> (PAGE_CACHE_SHIFT - inode->i_blkbits);
-	end = (logical + blocks - 1) >> (PAGE_CACHE_SHIFT - inode->i_blkbits);
+	index = map->m_lblk >> (PAGE_CACHE_SHIFT - inode->i_blkbits);
+	end = (map->m_lblk + blocks - 1) >> (PAGE_CACHE_SHIFT - inode->i_blkbits);
 	cur_logical = index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
 
 	pagevec_init(&pvec, 0);
@@ -2090,17 +2070,16 @@
 
 			/* skip blocks out of the range */
 			do {
-				if (cur_logical >= logical)
+				if (cur_logical >= map->m_lblk)
 					break;
 				cur_logical++;
 			} while ((bh = bh->b_this_page) != head);
 
 			do {
-				if (cur_logical >= logical + blocks)
+				if (cur_logical >= map->m_lblk + blocks)
 					break;
 
-				if (buffer_delay(bh) ||
-						buffer_unwritten(bh)) {
+				if (buffer_delay(bh) || buffer_unwritten(bh)) {
 
 					BUG_ON(bh->b_bdev != inode->i_sb->s_bdev);
 
@@ -2119,7 +2098,7 @@
 				} else if (buffer_mapped(bh))
 					BUG_ON(bh->b_blocknr != pblock);
 
-				if (buffer_uninit(exbh))
+				if (map->m_flags & EXT4_MAP_UNINIT)
 					set_buffer_uninit(bh);
 				cur_logical++;
 				pblock++;
@@ -2130,21 +2109,6 @@
 }
 
 
-/*
- * __unmap_underlying_blocks - just a helper function to unmap
- * set of blocks described by @bh
- */
-static inline void __unmap_underlying_blocks(struct inode *inode,
-					     struct buffer_head *bh)
-{
-	struct block_device *bdev = inode->i_sb->s_bdev;
-	int blocks, i;
-
-	blocks = bh->b_size >> inode->i_blkbits;
-	for (i = 0; i < blocks; i++)
-		unmap_underlying_metadata(bdev, bh->b_blocknr + i);
-}
-
 static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
 					sector_t logical, long blk_cnt)
 {
@@ -2206,7 +2170,7 @@
 static int mpage_da_map_blocks(struct mpage_da_data *mpd)
 {
 	int err, blks, get_blocks_flags;
-	struct buffer_head new;
+	struct ext4_map_blocks map;
 	sector_t next = mpd->b_blocknr;
 	unsigned max_blocks = mpd->b_size >> mpd->inode->i_blkbits;
 	loff_t disksize = EXT4_I(mpd->inode)->i_disksize;
@@ -2247,15 +2211,15 @@
 	 * EXT4_GET_BLOCKS_DELALLOC_RESERVE so the delalloc accounting
 	 * variables are updated after the blocks have been allocated.
 	 */
-	new.b_state = 0;
+	map.m_lblk = next;
+	map.m_len = max_blocks;
 	get_blocks_flags = EXT4_GET_BLOCKS_CREATE;
 	if (ext4_should_dioread_nolock(mpd->inode))
 		get_blocks_flags |= EXT4_GET_BLOCKS_IO_CREATE_EXT;
 	if (mpd->b_state & (1 << BH_Delay))
 		get_blocks_flags |= EXT4_GET_BLOCKS_DELALLOC_RESERVE;
 
-	blks = ext4_get_blocks(handle, mpd->inode, next, max_blocks,
-			       &new, get_blocks_flags);
+	blks = ext4_map_blocks(handle, mpd->inode, &map, get_blocks_flags);
 	if (blks < 0) {
 		err = blks;
 		/*
@@ -2282,7 +2246,7 @@
 		ext4_msg(mpd->inode->i_sb, KERN_CRIT,
 			 "delayed block allocation failed for inode %lu at "
 			 "logical offset %llu with max blocks %zd with "
-			 "error %d\n", mpd->inode->i_ino,
+			 "error %d", mpd->inode->i_ino,
 			 (unsigned long long) next,
 			 mpd->b_size >> mpd->inode->i_blkbits, err);
 		printk(KERN_CRIT "This should not happen!!  "
@@ -2297,10 +2261,13 @@
 	}
 	BUG_ON(blks == 0);
 
-	new.b_size = (blks << mpd->inode->i_blkbits);
+	if (map.m_flags & EXT4_MAP_NEW) {
+		struct block_device *bdev = mpd->inode->i_sb->s_bdev;
+		int i;
 
-	if (buffer_new(&new))
-		__unmap_underlying_blocks(mpd->inode, &new);
+		for (i = 0; i < map.m_len; i++)
+			unmap_underlying_metadata(bdev, map.m_pblk + i);
+	}
 
 	/*
 	 * If blocks are delayed marked, we need to
@@ -2308,7 +2275,7 @@
 	 */
 	if ((mpd->b_state & (1 << BH_Delay)) ||
 	    (mpd->b_state & (1 << BH_Unwritten)))
-		mpage_put_bnr_to_bhs(mpd, next, &new);
+		mpage_put_bnr_to_bhs(mpd, &map);
 
 	if (ext4_should_order_data(mpd->inode)) {
 		err = ext4_jbd2_file_inode(handle, mpd->inode);
@@ -2349,8 +2316,17 @@
 	sector_t next;
 	int nrblocks = mpd->b_size >> mpd->inode->i_blkbits;
 
+	/*
+	 * XXX Don't go larger than mballoc is willing to allocate
+	 * This is a stopgap solution.  We eventually need to fold
+	 * mpage_da_submit_io() into this function and then call
+	 * ext4_get_blocks() multiple times in a loop
+	 */
+	if (nrblocks >= 8*1024*1024/mpd->inode->i_sb->s_blocksize)
+		goto flush_it;
+
 	/* check if thereserved journal credits might overflow */
-	if (!(EXT4_I(mpd->inode)->i_flags & EXT4_EXTENTS_FL)) {
+	if (!(ext4_test_inode_flag(mpd->inode, EXT4_INODE_EXTENTS))) {
 		if (nrblocks >= EXT4_MAX_TRANS_DATA) {
 			/*
 			 * With non-extent format we are limited by the journal
@@ -2423,17 +2399,6 @@
 	struct buffer_head *bh, *head;
 	sector_t logical;
 
-	if (mpd->io_done) {
-		/*
-		 * Rest of the page in the page_vec
-		 * redirty then and skip then. We will
-		 * try to write them again after
-		 * starting a new transaction
-		 */
-		redirty_page_for_writepage(wbc, page);
-		unlock_page(page);
-		return MPAGE_DA_EXTENT_TAIL;
-	}
 	/*
 	 * Can we merge this page to current extent?
 	 */
@@ -2528,8 +2493,9 @@
  * initialized properly.
  */
 static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
-				  struct buffer_head *bh_result, int create)
+				  struct buffer_head *bh, int create)
 {
+	struct ext4_map_blocks map;
 	int ret = 0;
 	sector_t invalid_block = ~((sector_t) 0xffff);
 
@@ -2537,16 +2503,22 @@
 		invalid_block = ~0;
 
 	BUG_ON(create == 0);
-	BUG_ON(bh_result->b_size != inode->i_sb->s_blocksize);
+	BUG_ON(bh->b_size != inode->i_sb->s_blocksize);
+
+	map.m_lblk = iblock;
+	map.m_len = 1;
 
 	/*
 	 * first, we need to know whether the block is allocated already
 	 * preallocated blocks are unmapped but should treated
 	 * the same as allocated blocks.
 	 */
-	ret = ext4_get_blocks(NULL, inode, iblock, 1,  bh_result, 0);
-	if ((ret == 0) && !buffer_delay(bh_result)) {
-		/* the block isn't (pre)allocated yet, let's reserve space */
+	ret = ext4_map_blocks(NULL, inode, &map, 0);
+	if (ret < 0)
+		return ret;
+	if (ret == 0) {
+		if (buffer_delay(bh))
+			return 0; /* Not sure this could or should happen */
 		/*
 		 * XXX: __block_prepare_write() unmaps passed block,
 		 * is it OK?
@@ -2556,26 +2528,26 @@
 			/* not enough space to reserve */
 			return ret;
 
-		map_bh(bh_result, inode->i_sb, invalid_block);
-		set_buffer_new(bh_result);
-		set_buffer_delay(bh_result);
-	} else if (ret > 0) {
-		bh_result->b_size = (ret << inode->i_blkbits);
-		if (buffer_unwritten(bh_result)) {
-			/* A delayed write to unwritten bh should
-			 * be marked new and mapped.  Mapped ensures
-			 * that we don't do get_block multiple times
-			 * when we write to the same offset and new
-			 * ensures that we do proper zero out for
-			 * partial write.
-			 */
-			set_buffer_new(bh_result);
-			set_buffer_mapped(bh_result);
-		}
-		ret = 0;
+		map_bh(bh, inode->i_sb, invalid_block);
+		set_buffer_new(bh);
+		set_buffer_delay(bh);
+		return 0;
 	}
 
-	return ret;
+	map_bh(bh, inode->i_sb, map.m_pblk);
+	bh->b_state = (bh->b_state & ~EXT4_MAP_FLAGS) | map.m_flags;
+
+	if (buffer_unwritten(bh)) {
+		/* A delayed write to unwritten bh should be marked
+		 * new and mapped.  Mapped ensures that we don't do
+		 * get_block multiple times when we write to the same
+		 * offset and new ensures that we do proper zero out
+		 * for partial write.
+		 */
+		set_buffer_new(bh);
+		set_buffer_mapped(bh);
+	}
+	return 0;
 }
 
 /*
@@ -2597,21 +2569,8 @@
 static int noalloc_get_block_write(struct inode *inode, sector_t iblock,
 				   struct buffer_head *bh_result, int create)
 {
-	int ret = 0;
-	unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
-
 	BUG_ON(bh_result->b_size != inode->i_sb->s_blocksize);
-
-	/*
-	 * we don't want to do block allocation in writepage
-	 * so call get_block_wrap with create = 0
-	 */
-	ret = ext4_get_blocks(NULL, inode, iblock, max_blocks, bh_result, 0);
-	if (ret > 0) {
-		bh_result->b_size = (ret << inode->i_blkbits);
-		ret = 0;
-	}
-	return ret;
+	return _ext4_get_block(inode, iblock, bh_result, 0);
 }
 
 static int bget_one(handle_t *handle, struct buffer_head *bh)
@@ -2821,13 +2780,131 @@
 	 * number of contiguous block. So we will limit
 	 * number of contiguous block to a sane value
 	 */
-	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) &&
+	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) &&
 	    (max_blocks > EXT4_MAX_TRANS_DATA))
 		max_blocks = EXT4_MAX_TRANS_DATA;
 
 	return ext4_chunk_trans_blocks(inode, max_blocks);
 }
 
+/*
+ * write_cache_pages_da - walk the list of dirty pages of the given
+ * address space and call the callback function (which usually writes
+ * the pages).
+ *
+ * This is a forked version of write_cache_pages().  Differences:
+ *	Range cyclic is ignored.
+ *	no_nrwrite_index_update is always presumed true
+ */
+static int write_cache_pages_da(struct address_space *mapping,
+				struct writeback_control *wbc,
+				struct mpage_da_data *mpd)
+{
+	int ret = 0;
+	int done = 0;
+	struct pagevec pvec;
+	int nr_pages;
+	pgoff_t index;
+	pgoff_t end;		/* Inclusive */
+	long nr_to_write = wbc->nr_to_write;
+
+	pagevec_init(&pvec, 0);
+	index = wbc->range_start >> PAGE_CACHE_SHIFT;
+	end = wbc->range_end >> PAGE_CACHE_SHIFT;
+
+	while (!done && (index <= end)) {
+		int i;
+
+		nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
+			      PAGECACHE_TAG_DIRTY,
+			      min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
+		if (nr_pages == 0)
+			break;
+
+		for (i = 0; i < nr_pages; i++) {
+			struct page *page = pvec.pages[i];
+
+			/*
+			 * At this point, the page may be truncated or
+			 * invalidated (changing page->mapping to NULL), or
+			 * even swizzled back from swapper_space to tmpfs file
+			 * mapping. However, page->index will not change
+			 * because we have a reference on the page.
+			 */
+			if (page->index > end) {
+				done = 1;
+				break;
+			}
+
+			lock_page(page);
+
+			/*
+			 * Page truncated or invalidated. We can freely skip it
+			 * then, even for data integrity operations: the page
+			 * has disappeared concurrently, so there could be no
+			 * real expectation of this data interity operation
+			 * even if there is now a new, dirty page at the same
+			 * pagecache address.
+			 */
+			if (unlikely(page->mapping != mapping)) {
+continue_unlock:
+				unlock_page(page);
+				continue;
+			}
+
+			if (!PageDirty(page)) {
+				/* someone wrote it for us */
+				goto continue_unlock;
+			}
+
+			if (PageWriteback(page)) {
+				if (wbc->sync_mode != WB_SYNC_NONE)
+					wait_on_page_writeback(page);
+				else
+					goto continue_unlock;
+			}
+
+			BUG_ON(PageWriteback(page));
+			if (!clear_page_dirty_for_io(page))
+				goto continue_unlock;
+
+			ret = __mpage_da_writepage(page, wbc, mpd);
+			if (unlikely(ret)) {
+				if (ret == AOP_WRITEPAGE_ACTIVATE) {
+					unlock_page(page);
+					ret = 0;
+				} else {
+					done = 1;
+					break;
+				}
+			}
+
+			if (nr_to_write > 0) {
+				nr_to_write--;
+				if (nr_to_write == 0 &&
+				    wbc->sync_mode == WB_SYNC_NONE) {
+					/*
+					 * We stop writing back only if we are
+					 * not doing integrity sync. In case of
+					 * integrity sync we have to keep going
+					 * because someone may be concurrently
+					 * dirtying pages, and we might have
+					 * synced a lot of newly appeared dirty
+					 * pages, but have not synced all of the
+					 * old dirty pages.
+					 */
+					done = 1;
+					break;
+				}
+			}
+		}
+		pagevec_release(&pvec);
+		cond_resched();
+	}
+	return ret;
+}
+
+
 static int ext4_da_writepages(struct address_space *mapping,
 			      struct writeback_control *wbc)
 {
@@ -2836,7 +2913,6 @@
 	handle_t *handle = NULL;
 	struct mpage_da_data mpd;
 	struct inode *inode = mapping->host;
-	int no_nrwrite_index_update;
 	int pages_written = 0;
 	long pages_skipped;
 	unsigned int max_pages;
@@ -2916,12 +2992,6 @@
 	mpd.wbc = wbc;
 	mpd.inode = mapping->host;
 
-	/*
-	 * we don't want write_cache_pages to update
-	 * nr_to_write and writeback_index
-	 */
-	no_nrwrite_index_update = wbc->no_nrwrite_index_update;
-	wbc->no_nrwrite_index_update = 1;
 	pages_skipped = wbc->pages_skipped;
 
 retry:
@@ -2941,7 +3011,7 @@
 		if (IS_ERR(handle)) {
 			ret = PTR_ERR(handle);
 			ext4_msg(inode->i_sb, KERN_CRIT, "%s: jbd2_start: "
-			       "%ld pages, ino %lu; err %d\n", __func__,
+			       "%ld pages, ino %lu; err %d", __func__,
 				wbc->nr_to_write, inode->i_ino, ret);
 			goto out_writepages;
 		}
@@ -2963,8 +3033,7 @@
 		mpd.io_done = 0;
 		mpd.pages_written = 0;
 		mpd.retval = 0;
-		ret = write_cache_pages(mapping, wbc, __mpage_da_writepage,
-					&mpd);
+		ret = write_cache_pages_da(mapping, wbc, &mpd);
 		/*
 		 * If we have a contiguous extent of pages and we
 		 * haven't done the I/O yet, map the blocks and submit
@@ -3016,7 +3085,7 @@
 	if (pages_skipped != wbc->pages_skipped)
 		ext4_msg(inode->i_sb, KERN_CRIT,
 			 "This should not happen leaving %s "
-			 "with nr_to_write = %ld ret = %d\n",
+			 "with nr_to_write = %ld ret = %d",
 			 __func__, wbc->nr_to_write, ret);
 
 	/* Update index */
@@ -3030,8 +3099,6 @@
 		mapping->writeback_index = index;
 
 out_writepages:
-	if (!no_nrwrite_index_update)
-		wbc->no_nrwrite_index_update = 0;
 	wbc->nr_to_write -= nr_to_writebump;
 	wbc->range_start = range_start;
 	trace_ext4_da_writepages_result(inode, wbc, ret, pages_written);
@@ -3076,7 +3143,7 @@
 			       loff_t pos, unsigned len, unsigned flags,
 			       struct page **pagep, void **fsdata)
 {
-	int ret, retries = 0, quota_retries = 0;
+	int ret, retries = 0;
 	struct page *page;
 	pgoff_t index;
 	unsigned from, to;
@@ -3135,22 +3202,6 @@
 
 	if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
 		goto retry;
-
-	if ((ret == -EDQUOT) &&
-	    EXT4_I(inode)->i_reserved_meta_blocks &&
-	    (quota_retries++ < 3)) {
-		/*
-		 * Since we often over-estimate the number of meta
-		 * data blocks required, we may sometimes get a
-		 * spurios out of quota error even though there would
-		 * be enough space once we write the data blocks and
-		 * find out how many meta data blocks were _really_
-		 * required.  So try forcing the inode write to see if
-		 * that helps.
-		 */
-		write_inode_now(inode, (quota_retries == 3));
-		goto retry;
-	}
 out:
 	return ret;
 }
@@ -3546,46 +3597,18 @@
 	return ret;
 }
 
+/*
+ * ext4_get_block used when preparing for a DIO write or buffer write.
+ * We allocate an uinitialized extent if blocks haven't been allocated.
+ * The extent will be converted to initialized after the IO is complete.
+ */
 static int ext4_get_block_write(struct inode *inode, sector_t iblock,
 		   struct buffer_head *bh_result, int create)
 {
-	handle_t *handle = ext4_journal_current_handle();
-	int ret = 0;
-	unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
-	int dio_credits;
-	int started = 0;
-
 	ext4_debug("ext4_get_block_write: inode %lu, create flag %d\n",
 		   inode->i_ino, create);
-	/*
-	 * ext4_get_block in prepare for a DIO write or buffer write.
-	 * We allocate an uinitialized extent if blocks haven't been allocated.
-	 * The extent will be converted to initialized after IO complete.
-	 */
-	create = EXT4_GET_BLOCKS_IO_CREATE_EXT;
-
-	if (!handle) {
-		if (max_blocks > DIO_MAX_BLOCKS)
-			max_blocks = DIO_MAX_BLOCKS;
-		dio_credits = ext4_chunk_trans_blocks(inode, max_blocks);
-		handle = ext4_journal_start(inode, dio_credits);
-		if (IS_ERR(handle)) {
-			ret = PTR_ERR(handle);
-			goto out;
-		}
-		started = 1;
-	}
-
-	ret = ext4_get_blocks(handle, inode, iblock, max_blocks, bh_result,
-			      create);
-	if (ret > 0) {
-		bh_result->b_size = (ret << inode->i_blkbits);
-		ret = 0;
-	}
-	if (started)
-		ext4_journal_stop(handle);
-out:
-	return ret;
+	return _ext4_get_block(inode, iblock, bh_result,
+			       EXT4_GET_BLOCKS_IO_CREATE_EXT);
 }
 
 static void dump_completed_IO(struct inode * inode)
@@ -3973,7 +3996,7 @@
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
 
-	if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
+	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
 		return ext4_ext_direct_IO(rw, iocb, iov, offset, nr_segs);
 
 	return ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs);
@@ -4302,10 +4325,9 @@
 
 	if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), block_to_free,
 				   count)) {
-		ext4_error(inode->i_sb, "inode #%lu: "
-			   "attempt to clear blocks %llu len %lu, invalid",
-			   inode->i_ino, (unsigned long long) block_to_free,
-			   count);
+		EXT4_ERROR_INODE(inode, "attempt to clear invalid "
+				 "blocks %llu len %lu",
+				 (unsigned long long) block_to_free, count);
 		return 1;
 	}
 
@@ -4410,11 +4432,10 @@
 		if ((EXT4_JOURNAL(inode) == NULL) || bh2jh(this_bh))
 			ext4_handle_dirty_metadata(handle, inode, this_bh);
 		else
-			ext4_error(inode->i_sb,
-				   "circular indirect block detected, "
-				   "inode=%lu, block=%llu",
-				   inode->i_ino,
-				   (unsigned long long) this_bh->b_blocknr);
+			EXT4_ERROR_INODE(inode,
+					 "circular indirect block detected at "
+					 "block %llu",
+				(unsigned long long) this_bh->b_blocknr);
 	}
 }
 
@@ -4452,11 +4473,10 @@
 
 			if (!ext4_data_block_valid(EXT4_SB(inode->i_sb),
 						   nr, 1)) {
-				ext4_error(inode->i_sb,
-					   "indirect mapped block in inode "
-					   "#%lu invalid (level %d, blk #%lu)",
-					   inode->i_ino, depth,
-					   (unsigned long) nr);
+				EXT4_ERROR_INODE(inode,
+						 "invalid indirect mapped "
+						 "block %lu (level %d)",
+						 (unsigned long) nr, depth);
 				break;
 			}
 
@@ -4468,9 +4488,9 @@
 			 * (should be rare).
 			 */
 			if (!bh) {
-				ext4_error(inode->i_sb,
-					   "Read failure, inode=%lu, block=%llu",
-					   inode->i_ino, nr);
+				EXT4_ERROR_INODE(inode,
+						 "Read failure block=%llu",
+						 (unsigned long long) nr);
 				continue;
 			}
 
@@ -4612,12 +4632,12 @@
 	if (!ext4_can_truncate(inode))
 		return;
 
-	EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
+	ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
 
 	if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
 		ext4_set_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
 
-	if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
+	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
 		ext4_ext_truncate(inode);
 		return;
 	}
@@ -4785,8 +4805,8 @@
 
 	bh = sb_getblk(sb, block);
 	if (!bh) {
-		ext4_error(sb, "unable to read inode block - "
-			   "inode=%lu, block=%llu", inode->i_ino, block);
+		EXT4_ERROR_INODE(inode, "unable to read inode block - "
+				 "block %llu", block);
 		return -EIO;
 	}
 	if (!buffer_uptodate(bh)) {
@@ -4884,8 +4904,8 @@
 		submit_bh(READ_META, bh);
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh)) {
-			ext4_error(sb, "unable to read inode block - inode=%lu,"
-				   " block=%llu", inode->i_ino, block);
+			EXT4_ERROR_INODE(inode, "unable to read inode "
+					 "block %llu", block);
 			brelse(bh);
 			return -EIO;
 		}
@@ -5096,8 +5116,8 @@
 	ret = 0;
 	if (ei->i_file_acl &&
 	    !ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
-		ext4_error(sb, "bad extended attribute block %llu inode #%lu",
-			   ei->i_file_acl, inode->i_ino);
+		EXT4_ERROR_INODE(inode, "bad extended attribute block %llu",
+				 ei->i_file_acl);
 		ret = -EIO;
 		goto bad_inode;
 	} else if (ei->i_flags & EXT4_EXTENTS_FL) {
@@ -5142,8 +5162,7 @@
 			   new_decode_dev(le32_to_cpu(raw_inode->i_block[1])));
 	} else {
 		ret = -EIO;
-		ext4_error(inode->i_sb, "bogus i_mode (%o) for inode=%lu",
-			   inode->i_mode, inode->i_ino);
+		EXT4_ERROR_INODE(inode, "bogus i_mode (%o)", inode->i_mode);
 		goto bad_inode;
 	}
 	brelse(iloc.bh);
@@ -5381,9 +5400,9 @@
 		if (wbc->sync_mode == WB_SYNC_ALL)
 			sync_dirty_buffer(iloc.bh);
 		if (buffer_req(iloc.bh) && !buffer_uptodate(iloc.bh)) {
-			ext4_error(inode->i_sb, "IO error syncing inode, "
-				   "inode=%lu, block=%llu", inode->i_ino,
-				   (unsigned long long)iloc.bh->b_blocknr);
+			EXT4_ERROR_INODE(inode,
+				"IO error syncing inode (block=%llu)",
+				(unsigned long long) iloc.bh->b_blocknr);
 			err = -EIO;
 		}
 		brelse(iloc.bh);
@@ -5455,7 +5474,7 @@
 	}
 
 	if (attr->ia_valid & ATTR_SIZE) {
-		if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)) {
+		if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
 			struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
 
 			if (attr->ia_size > sbi->s_bitmap_maxbytes) {
@@ -5468,7 +5487,7 @@
 	if (S_ISREG(inode->i_mode) &&
 	    attr->ia_valid & ATTR_SIZE &&
 	    (attr->ia_size < inode->i_size ||
-	     (EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL))) {
+	     (ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS)))) {
 		handle_t *handle;
 
 		handle = ext4_journal_start(inode, 3);
@@ -5500,7 +5519,7 @@
 			}
 		}
 		/* ext4_truncate will clear the flag */
-		if ((EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL))
+		if ((ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS)))
 			ext4_truncate(inode);
 	}
 
@@ -5576,7 +5595,7 @@
 
 static int ext4_index_trans_blocks(struct inode *inode, int nrblocks, int chunk)
 {
-	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return ext4_indirect_trans_blocks(inode, nrblocks, chunk);
 	return ext4_ext_index_trans_blocks(inode, nrblocks, chunk);
 }
@@ -5911,9 +5930,9 @@
 	 */
 
 	if (val)
-		EXT4_I(inode)->i_flags |= EXT4_JOURNAL_DATA_FL;
+		ext4_set_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
 	else
-		EXT4_I(inode)->i_flags &= ~EXT4_JOURNAL_DATA_FL;
+		ext4_clear_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
 	ext4_set_aops(inode);
 
 	jbd2_journal_unlock_updates(journal);
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 016d024..bf5ae88 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -258,7 +258,7 @@
 		if (me.moved_len > 0)
 			file_remove_suid(donor_filp);
 
-		if (copy_to_user((struct move_extent __user *)arg, 
+		if (copy_to_user((struct move_extent __user *)arg,
 				 &me, sizeof(me)))
 			err = -EFAULT;
 mext_out:
@@ -373,7 +373,30 @@
 	case EXT4_IOC32_SETRSVSZ:
 		cmd = EXT4_IOC_SETRSVSZ;
 		break;
-	case EXT4_IOC_GROUP_ADD:
+	case EXT4_IOC32_GROUP_ADD: {
+		struct compat_ext4_new_group_input __user *uinput;
+		struct ext4_new_group_input input;
+		mm_segment_t old_fs;
+		int err;
+
+		uinput = compat_ptr(arg);
+		err = get_user(input.group, &uinput->group);
+		err |= get_user(input.block_bitmap, &uinput->block_bitmap);
+		err |= get_user(input.inode_bitmap, &uinput->inode_bitmap);
+		err |= get_user(input.inode_table, &uinput->inode_table);
+		err |= get_user(input.blocks_count, &uinput->blocks_count);
+		err |= get_user(input.reserved_blocks,
+				&uinput->reserved_blocks);
+		if (err)
+			return -EFAULT;
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD,
+				 (unsigned long) &input);
+		set_fs(old_fs);
+		return err;
+	}
+	case EXT4_IOC_MOVE_EXT:
 		break;
 	default:
 		return -ENOIOCTLCMD;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index b423a36..12b3bc0 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -658,6 +658,27 @@
 	}
 }
 
+/*
+ * Cache the order of the largest free extent we have available in this block
+ * group.
+ */
+static void
+mb_set_largest_free_order(struct super_block *sb, struct ext4_group_info *grp)
+{
+	int i;
+	int bits;
+
+	grp->bb_largest_free_order = -1; /* uninit */
+
+	bits = sb->s_blocksize_bits + 1;
+	for (i = bits; i >= 0; i--) {
+		if (grp->bb_counters[i] > 0) {
+			grp->bb_largest_free_order = i;
+			break;
+		}
+	}
+}
+
 static noinline_for_stack
 void ext4_mb_generate_buddy(struct super_block *sb,
 				void *buddy, void *bitmap, ext4_group_t group)
@@ -700,6 +721,7 @@
 		 */
 		grp->bb_free = free;
 	}
+	mb_set_largest_free_order(sb, grp);
 
 	clear_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &(grp->bb_state));
 
@@ -725,6 +747,9 @@
  * contain blocks_per_page (PAGE_CACHE_SIZE / blocksize)  blocks.
  * So it can have information regarding groups_per_page which
  * is blocks_per_page/2
+ *
+ * Locking note:  This routine takes the block group lock of all groups
+ * for this page; do not hold this lock when calling this routine!
  */
 
 static int ext4_mb_init_cache(struct page *page, char *incore)
@@ -865,6 +890,7 @@
 			BUG_ON(incore == NULL);
 			mb_debug(1, "put buddy for group %u in page %lu/%x\n",
 				group, page->index, i * blocksize);
+			trace_ext4_mb_buddy_bitmap_load(sb, group);
 			grinfo = ext4_get_group_info(sb, group);
 			grinfo->bb_fragments = 0;
 			memset(grinfo->bb_counters, 0,
@@ -882,6 +908,7 @@
 			BUG_ON(incore != NULL);
 			mb_debug(1, "put bitmap for group %u in page %lu/%x\n",
 				group, page->index, i * blocksize);
+			trace_ext4_mb_bitmap_load(sb, group);
 
 			/* see comments in ext4_mb_put_pa() */
 			ext4_lock_group(sb, group);
@@ -910,6 +937,11 @@
 	return err;
 }
 
+/*
+ * Locking note:  This routine calls ext4_mb_init_cache(), which takes the
+ * block group lock of all groups for this page; do not hold the BG lock when
+ * calling this routine!
+ */
 static noinline_for_stack
 int ext4_mb_init_group(struct super_block *sb, ext4_group_t group)
 {
@@ -1004,6 +1036,11 @@
 	return ret;
 }
 
+/*
+ * Locking note:  This routine calls ext4_mb_init_cache(), which takes the
+ * block group lock of all groups for this page; do not hold the BG lock when
+ * calling this routine!
+ */
 static noinline_for_stack int
 ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
 					struct ext4_buddy *e4b)
@@ -1150,7 +1187,7 @@
 	return ret;
 }
 
-static void ext4_mb_release_desc(struct ext4_buddy *e4b)
+static void ext4_mb_unload_buddy(struct ext4_buddy *e4b)
 {
 	if (e4b->bd_bitmap_page)
 		page_cache_release(e4b->bd_bitmap_page);
@@ -1299,6 +1336,7 @@
 			buddy = buddy2;
 		} while (1);
 	}
+	mb_set_largest_free_order(sb, e4b->bd_info);
 	mb_check_buddy(e4b);
 }
 
@@ -1427,6 +1465,7 @@
 		e4b->bd_info->bb_counters[ord]++;
 		e4b->bd_info->bb_counters[ord]++;
 	}
+	mb_set_largest_free_order(e4b->bd_sb, e4b->bd_info);
 
 	mb_set_bits(EXT4_MB_BITMAP(e4b), ex->fe_start, len0);
 	mb_check_buddy(e4b);
@@ -1617,7 +1656,7 @@
 	}
 
 	ext4_unlock_group(ac->ac_sb, group);
-	ext4_mb_release_desc(e4b);
+	ext4_mb_unload_buddy(e4b);
 
 	return 0;
 }
@@ -1672,7 +1711,7 @@
 		ext4_mb_use_best_found(ac, e4b);
 	}
 	ext4_unlock_group(ac->ac_sb, group);
-	ext4_mb_release_desc(e4b);
+	ext4_mb_unload_buddy(e4b);
 
 	return 0;
 }
@@ -1821,16 +1860,22 @@
 	}
 }
 
+/* This is now called BEFORE we load the buddy bitmap. */
 static int ext4_mb_good_group(struct ext4_allocation_context *ac,
 				ext4_group_t group, int cr)
 {
 	unsigned free, fragments;
-	unsigned i, bits;
 	int flex_size = ext4_flex_bg_size(EXT4_SB(ac->ac_sb));
 	struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group);
 
 	BUG_ON(cr < 0 || cr >= 4);
-	BUG_ON(EXT4_MB_GRP_NEED_INIT(grp));
+
+	/* We only do this if the grp has never been initialized */
+	if (unlikely(EXT4_MB_GRP_NEED_INIT(grp))) {
+		int ret = ext4_mb_init_group(ac->ac_sb, group);
+		if (ret)
+			return 0;
+	}
 
 	free = grp->bb_free;
 	fragments = grp->bb_fragments;
@@ -1843,17 +1888,16 @@
 	case 0:
 		BUG_ON(ac->ac_2order == 0);
 
+		if (grp->bb_largest_free_order < ac->ac_2order)
+			return 0;
+
 		/* Avoid using the first bg of a flexgroup for data files */
 		if ((ac->ac_flags & EXT4_MB_HINT_DATA) &&
 		    (flex_size >= EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME) &&
 		    ((group % flex_size) == 0))
 			return 0;
 
-		bits = ac->ac_sb->s_blocksize_bits + 1;
-		for (i = ac->ac_2order; i <= bits; i++)
-			if (grp->bb_counters[i] > 0)
-				return 1;
-		break;
+		return 1;
 	case 1:
 		if ((free / fragments) >= ac->ac_g_ex.fe_len)
 			return 1;
@@ -1964,7 +2008,7 @@
 	sbi = EXT4_SB(sb);
 	ngroups = ext4_get_groups_count(sb);
 	/* non-extent files are limited to low blocks/groups */
-	if (!(EXT4_I(ac->ac_inode)->i_flags & EXT4_EXTENTS_FL))
+	if (!(ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS)))
 		ngroups = sbi->s_blockfile_groups;
 
 	BUG_ON(ac->ac_status == AC_STATUS_FOUND);
@@ -2024,15 +2068,11 @@
 		group = ac->ac_g_ex.fe_group;
 
 		for (i = 0; i < ngroups; group++, i++) {
-			struct ext4_group_info *grp;
-			struct ext4_group_desc *desc;
-
 			if (group == ngroups)
 				group = 0;
 
-			/* quick check to skip empty groups */
-			grp = ext4_get_group_info(sb, group);
-			if (grp->bb_free == 0)
+			/* This now checks without needing the buddy page */
+			if (!ext4_mb_good_group(ac, group, cr))
 				continue;
 
 			err = ext4_mb_load_buddy(sb, group, &e4b);
@@ -2040,15 +2080,18 @@
 				goto out;
 
 			ext4_lock_group(sb, group);
+
+			/*
+			 * We need to check again after locking the
+			 * block group
+			 */
 			if (!ext4_mb_good_group(ac, group, cr)) {
-				/* someone did allocation from this group */
 				ext4_unlock_group(sb, group);
-				ext4_mb_release_desc(&e4b);
+				ext4_mb_unload_buddy(&e4b);
 				continue;
 			}
 
 			ac->ac_groups_scanned++;
-			desc = ext4_get_group_desc(sb, group, NULL);
 			if (cr == 0)
 				ext4_mb_simple_scan_group(ac, &e4b);
 			else if (cr == 1 &&
@@ -2058,7 +2101,7 @@
 				ext4_mb_complex_scan_group(ac, &e4b);
 
 			ext4_unlock_group(sb, group);
-			ext4_mb_release_desc(&e4b);
+			ext4_mb_unload_buddy(&e4b);
 
 			if (ac->ac_status != AC_STATUS_CONTINUE)
 				break;
@@ -2148,7 +2191,7 @@
 	ext4_lock_group(sb, group);
 	memcpy(&sg, ext4_get_group_info(sb, group), i);
 	ext4_unlock_group(sb, group);
-	ext4_mb_release_desc(&e4b);
+	ext4_mb_unload_buddy(&e4b);
 
 	seq_printf(seq, "#%-5u: %-5u %-5u %-5u [", group, sg.info.bb_free,
 			sg.info.bb_fragments, sg.info.bb_first_free);
@@ -2255,6 +2298,7 @@
 	INIT_LIST_HEAD(&meta_group_info[i]->bb_prealloc_list);
 	init_rwsem(&meta_group_info[i]->alloc_sem);
 	meta_group_info[i]->bb_free_root = RB_ROOT;
+	meta_group_info[i]->bb_largest_free_order = -1;  /* uninit */
 
 #ifdef DOUBLE_CHECK
 	{
@@ -2536,6 +2580,7 @@
 			 entry->count, entry->group, entry);
 
 		if (test_opt(sb, DISCARD)) {
+			int ret;
 			ext4_fsblk_t discard_block;
 
 			discard_block = entry->start_blk +
@@ -2543,7 +2588,12 @@
 			trace_ext4_discard_blocks(sb,
 					(unsigned long long)discard_block,
 					entry->count);
-			sb_issue_discard(sb, discard_block, entry->count);
+			ret = sb_issue_discard(sb, discard_block, entry->count);
+			if (ret == EOPNOTSUPP) {
+				ext4_warning(sb,
+					"discard not supported, disabling");
+				clear_opt(EXT4_SB(sb)->s_mount_opt, DISCARD);
+			}
 		}
 
 		err = ext4_mb_load_buddy(sb, entry->group, &e4b);
@@ -2568,7 +2618,7 @@
 		}
 		ext4_unlock_group(sb, entry->group);
 		kmem_cache_free(ext4_free_ext_cachep, entry);
-		ext4_mb_release_desc(&e4b);
+		ext4_mb_unload_buddy(&e4b);
 	}
 
 	mb_debug(1, "freed %u blocks in %u structures\n", count, count2);
@@ -2641,7 +2691,7 @@
 
 void exit_ext4_mballoc(void)
 {
-	/* 
+	/*
 	 * Wait for completion of call_rcu()'s on ext4_pspace_cachep
 	 * before destroying the slab cache.
 	 */
@@ -2981,7 +3031,7 @@
 	if (sbi->s_mb_stats && ac->ac_g_ex.fe_len > 1) {
 		atomic_inc(&sbi->s_bal_reqs);
 		atomic_add(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated);
-		if (ac->ac_o_ex.fe_len >= ac->ac_g_ex.fe_len)
+		if (ac->ac_b_ex.fe_len >= ac->ac_o_ex.fe_len)
 			atomic_inc(&sbi->s_bal_success);
 		atomic_add(ac->ac_found, &sbi->s_bal_ex_scanned);
 		if (ac->ac_g_ex.fe_start == ac->ac_b_ex.fe_start &&
@@ -3123,7 +3173,7 @@
 			continue;
 
 		/* non-extent files can't have physical blocks past 2^32 */
-		if (!(EXT4_I(ac->ac_inode)->i_flags & EXT4_EXTENTS_FL) &&
+		if (!(ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS)) &&
 			pa->pa_pstart + pa->pa_len > EXT4_MAX_BLOCK_FILE_PHYS)
 			continue;
 
@@ -3280,7 +3330,7 @@
 	spin_unlock(&pa->pa_lock);
 
 	grp_blk = pa->pa_pstart;
-	/* 
+	/*
 	 * If doing group-based preallocation, pa_pstart may be in the
 	 * next group when pa is used up
 	 */
@@ -3697,7 +3747,7 @@
 	ext4_unlock_group(sb, group);
 	if (ac)
 		kmem_cache_free(ext4_ac_cachep, ac);
-	ext4_mb_release_desc(&e4b);
+	ext4_mb_unload_buddy(&e4b);
 	put_bh(bitmap_bh);
 	return free;
 }
@@ -3801,7 +3851,7 @@
 		if (bitmap_bh == NULL) {
 			ext4_error(sb, "Error reading block bitmap for %u",
 					group);
-			ext4_mb_release_desc(&e4b);
+			ext4_mb_unload_buddy(&e4b);
 			continue;
 		}
 
@@ -3810,7 +3860,7 @@
 		ext4_mb_release_inode_pa(&e4b, bitmap_bh, pa, ac);
 		ext4_unlock_group(sb, group);
 
-		ext4_mb_release_desc(&e4b);
+		ext4_mb_unload_buddy(&e4b);
 		put_bh(bitmap_bh);
 
 		list_del(&pa->u.pa_tmp_list);
@@ -4074,7 +4124,7 @@
 		ext4_mb_release_group_pa(&e4b, pa, ac);
 		ext4_unlock_group(sb, group);
 
-		ext4_mb_release_desc(&e4b);
+		ext4_mb_unload_buddy(&e4b);
 		list_del(&pa->u.pa_tmp_list);
 		call_rcu(&(pa)->u.pa_rcu, ext4_mb_pa_callback);
 	}
@@ -4484,12 +4534,12 @@
 			if (!bh)
 				tbh = sb_find_get_block(inode->i_sb,
 							block + i);
-			ext4_forget(handle, flags & EXT4_FREE_BLOCKS_METADATA, 
+			ext4_forget(handle, flags & EXT4_FREE_BLOCKS_METADATA,
 				    inode, tbh, block + i);
 		}
 	}
 
-	/* 
+	/*
 	 * We need to make sure we don't reuse the freed block until
 	 * after the transaction is committed, which we can do by
 	 * treating the block as metadata, below.  We make an
@@ -4610,7 +4660,7 @@
 		atomic_add(count, &sbi->s_flex_groups[flex_group].free_blocks);
 	}
 
-	ext4_mb_release_desc(&e4b);
+	ext4_mb_unload_buddy(&e4b);
 
 	freed += count;
 
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index 34dcfc5..6f3a27e 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -475,7 +475,7 @@
 	 */
 	if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
 				       EXT4_FEATURE_INCOMPAT_EXTENTS) ||
-	    (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+	    (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return -EINVAL;
 
 	if (S_ISLNK(inode->i_mode) && inode->i_blocks == 0)
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index d1fc662..3a6c92a 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -482,6 +482,7 @@
 	int depth = ext_depth(orig_inode);
 	int ret;
 
+	start_ext.ee_block = end_ext.ee_block = 0;
 	o_start = o_end = oext = orig_path[depth].p_ext;
 	oext_alen = ext4_ext_get_actual_len(oext);
 	start_ext.ee_len = end_ext.ee_len = 0;
@@ -529,7 +530,7 @@
 	 * new_ext       |-------|
 	 */
 	if (le32_to_cpu(oext->ee_block) + oext_alen - 1 < new_ext_end) {
-		ext4_error(orig_inode->i_sb,
+		EXT4_ERROR_INODE(orig_inode,
 			"new_ext_end(%u) should be less than or equal to "
 			"oext->ee_block(%u) + oext_alen(%d) - 1",
 			new_ext_end, le32_to_cpu(oext->ee_block),
@@ -692,12 +693,12 @@
 	while (1) {
 		/* The extent for donor must be found. */
 		if (!dext) {
-			ext4_error(donor_inode->i_sb,
+			EXT4_ERROR_INODE(donor_inode,
 				   "The extent for donor must be found");
 			*err = -EIO;
 			goto out;
 		} else if (donor_off != le32_to_cpu(tmp_dext.ee_block)) {
-			ext4_error(donor_inode->i_sb,
+			EXT4_ERROR_INODE(donor_inode,
 				"Donor offset(%u) and the first block of donor "
 				"extent(%u) should be equal",
 				donor_off,
@@ -976,11 +977,11 @@
 	}
 
 	/* Ext4 move extent supports only extent based file */
-	if (!(EXT4_I(orig_inode)->i_flags & EXT4_EXTENTS_FL)) {
+	if (!(ext4_test_inode_flag(orig_inode, EXT4_INODE_EXTENTS))) {
 		ext4_debug("ext4 move extent: orig file is not extents "
 			"based file [ino:orig %lu]\n", orig_inode->i_ino);
 		return -EOPNOTSUPP;
-	} else if (!(EXT4_I(donor_inode)->i_flags & EXT4_EXTENTS_FL)) {
+	} else if (!(ext4_test_inode_flag(donor_inode, EXT4_INODE_EXTENTS))) {
 		ext4_debug("ext4 move extent: donor file is not extents "
 			"based file [ino:donor %lu]\n", donor_inode->i_ino);
 		return -EOPNOTSUPP;
@@ -1354,7 +1355,7 @@
 			if (ret1 < 0)
 				break;
 			if (*moved_len > len) {
-				ext4_error(orig_inode->i_sb,
+				EXT4_ERROR_INODE(orig_inode,
 					"We replaced blocks too much! "
 					"sum of replaced: %llu requested: %llu",
 					*moved_len, len);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 0c070fa..a43e661 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -187,7 +187,7 @@
 		return blocksize;
 	return (len & 65532) | ((len & 3) << 16);
 }
-  
+
 __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
 {
 	if ((len > blocksize) || (blocksize > (1 << 18)) || (len & 3))
@@ -197,7 +197,7 @@
 	if (len == blocksize) {
 		if (blocksize == 65536)
 			return cpu_to_le16(EXT4_MAX_REC_LEN);
-		else 
+		else
 			return cpu_to_le16(0);
 	}
 	return cpu_to_le16((len & 65532) | ((len >> 16) & 3));
@@ -349,7 +349,7 @@
 		brelse(bh);
 	}
 	if (bcount)
-		printk(KERN_DEBUG "%snames %u, fullness %u (%u%%)\n", 
+		printk(KERN_DEBUG "%snames %u, fullness %u (%u%%)\n",
 		       levels ? "" : "   ", names, space/bcount,
 		       (space/bcount)*100/blocksize);
 	return (struct stats) { names, space, bcount};
@@ -653,10 +653,10 @@
 	int ret, err;
 	__u32 hashval;
 
-	dxtrace(printk(KERN_DEBUG "In htree_fill_tree, start hash: %x:%x\n", 
+	dxtrace(printk(KERN_DEBUG "In htree_fill_tree, start hash: %x:%x\n",
 		       start_hash, start_minor_hash));
 	dir = dir_file->f_path.dentry->d_inode;
-	if (!(EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) {
+	if (!(ext4_test_inode_flag(dir, EXT4_INODE_INDEX))) {
 		hinfo.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;
 		if (hinfo.hash_version <= DX_HASH_TEA)
 			hinfo.hash_version +=
@@ -801,7 +801,7 @@
 {
 	if (!EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
 				     EXT4_FEATURE_COMPAT_DIR_INDEX))
-		EXT4_I(inode)->i_flags &= ~EXT4_INDEX_FL;
+		ext4_clear_inode_flag(inode, EXT4_INODE_INDEX);
 }
 
 /*
@@ -943,8 +943,8 @@
 		wait_on_buffer(bh);
 		if (!buffer_uptodate(bh)) {
 			/* read error, skip block & hope for the best */
-			ext4_error(sb, "reading directory #%lu offset %lu",
-				   dir->i_ino, (unsigned long)block);
+			EXT4_ERROR_INODE(dir, "reading directory lblock %lu",
+					 (unsigned long) block);
 			brelse(bh);
 			goto next;
 		}
@@ -1066,15 +1066,15 @@
 		__u32 ino = le32_to_cpu(de->inode);
 		brelse(bh);
 		if (!ext4_valid_inum(dir->i_sb, ino)) {
-			ext4_error(dir->i_sb, "bad inode number: %u", ino);
+			EXT4_ERROR_INODE(dir, "bad inode number: %u", ino);
 			return ERR_PTR(-EIO);
 		}
 		inode = ext4_iget(dir->i_sb, ino);
 		if (unlikely(IS_ERR(inode))) {
 			if (PTR_ERR(inode) == -ESTALE) {
-				ext4_error(dir->i_sb,
-						"deleted inode referenced: %u",
-						ino);
+				EXT4_ERROR_INODE(dir,
+						 "deleted inode referenced: %u",
+						 ino);
 				return ERR_PTR(-EIO);
 			} else {
 				return ERR_CAST(inode);
@@ -1104,8 +1104,8 @@
 	brelse(bh);
 
 	if (!ext4_valid_inum(child->d_inode->i_sb, ino)) {
-		ext4_error(child->d_inode->i_sb,
-			   "bad inode number: %u", ino);
+		EXT4_ERROR_INODE(child->d_inode,
+				 "bad parent inode number: %u", ino);
 		return ERR_PTR(-EIO);
 	}
 
@@ -1141,7 +1141,7 @@
 	unsigned rec_len = 0;
 
 	while (count--) {
-		struct ext4_dir_entry_2 *de = (struct ext4_dir_entry_2 *) 
+		struct ext4_dir_entry_2 *de = (struct ext4_dir_entry_2 *)
 						(from + (map->offs<<2));
 		rec_len = EXT4_DIR_REC_LEN(de->name_len);
 		memcpy (to, de, rec_len);
@@ -1404,9 +1404,7 @@
 	de = (struct ext4_dir_entry_2 *)((char *)fde +
 		ext4_rec_len_from_disk(fde->rec_len, blocksize));
 	if ((char *) de >= (((char *) root) + blocksize)) {
-		ext4_error(dir->i_sb,
-			   "invalid rec_len for '..' in inode %lu",
-			   dir->i_ino);
+		EXT4_ERROR_INODE(dir, "invalid rec_len for '..'");
 		brelse(bh);
 		return -EIO;
 	}
@@ -1418,7 +1416,7 @@
 		brelse(bh);
 		return retval;
 	}
-	EXT4_I(dir)->i_flags |= EXT4_INDEX_FL;
+	ext4_set_inode_flag(dir, EXT4_INODE_INDEX);
 	data1 = bh2->b_data;
 
 	memcpy (data1, de, len);
@@ -1491,7 +1489,7 @@
 		retval = ext4_dx_add_entry(handle, dentry, inode);
 		if (!retval || (retval != ERR_BAD_DX_DIR))
 			return retval;
-		EXT4_I(dir)->i_flags &= ~EXT4_INDEX_FL;
+		ext4_clear_inode_flag(dir, EXT4_INODE_INDEX);
 		dx_fallback++;
 		ext4_mark_inode_dirty(handle, dir);
 	}
@@ -1519,6 +1517,8 @@
 	de->rec_len = ext4_rec_len_to_disk(blocksize, blocksize);
 	retval = add_dirent_to_buf(handle, dentry, inode, de, bh);
 	brelse(bh);
+	if (retval == 0)
+		ext4_set_inode_state(inode, EXT4_STATE_NEWENTRY);
 	return retval;
 }
 
@@ -1915,9 +1915,8 @@
 	if (inode->i_size < EXT4_DIR_REC_LEN(1) + EXT4_DIR_REC_LEN(2) ||
 	    !(bh = ext4_bread(NULL, inode, 0, 0, &err))) {
 		if (err)
-			ext4_error(inode->i_sb,
-				   "error %d reading directory #%lu offset 0",
-				   err, inode->i_ino);
+			EXT4_ERROR_INODE(inode,
+				"error %d reading directory lblock 0", err);
 		else
 			ext4_warning(inode->i_sb,
 				     "bad directory (dir #%lu) - no data block",
@@ -1941,17 +1940,17 @@
 	de = ext4_next_entry(de1, sb->s_blocksize);
 	while (offset < inode->i_size) {
 		if (!bh ||
-			(void *) de >= (void *) (bh->b_data+sb->s_blocksize)) {
+		    (void *) de >= (void *) (bh->b_data+sb->s_blocksize)) {
+			unsigned int lblock;
 			err = 0;
 			brelse(bh);
-			bh = ext4_bread(NULL, inode,
-				offset >> EXT4_BLOCK_SIZE_BITS(sb), 0, &err);
+			lblock = offset >> EXT4_BLOCK_SIZE_BITS(sb);
+			bh = ext4_bread(NULL, inode, lblock, 0, &err);
 			if (!bh) {
 				if (err)
-					ext4_error(sb,
-						   "error %d reading directory"
-						   " #%lu offset %u",
-						   err, inode->i_ino, offset);
+					EXT4_ERROR_INODE(inode,
+						"error %d reading directory "
+						"lblock %u", err, lblock);
 				offset += sb->s_blocksize;
 				continue;
 			}
@@ -2297,7 +2296,7 @@
 		}
 	} else {
 		/* clear the extent format for fast symlink */
-		EXT4_I(inode)->i_flags &= ~EXT4_EXTENTS_FL;
+		ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);
 		inode->i_op = &ext4_fast_symlink_inode_operations;
 		memcpy((char *)&EXT4_I(inode)->i_data, symname, l);
 		inode->i_size = l-1;
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 5692c48..6df797e 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -911,7 +911,8 @@
 	percpu_counter_add(&sbi->s_freeinodes_counter,
 			   EXT4_INODES_PER_GROUP(sb));
 
-	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
+	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG) &&
+	    sbi->s_log_groups_per_flex) {
 		ext4_group_t flex_group;
 		flex_group = ext4_flex_group(sbi, input->group);
 		atomic_add(input->free_blocks_count,
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e14d22c..4e8983a 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -241,6 +241,7 @@
 	if (sb->s_flags & MS_RDONLY)
 		return ERR_PTR(-EROFS);
 
+	vfs_check_frozen(sb, SB_FREEZE_WRITE);
 	/* Special case here: if the journal has aborted behind our
 	 * backs (eg. EIO in the commit thread), then we still need to
 	 * take the FS itself readonly cleanly. */
@@ -645,6 +646,8 @@
 	struct ext4_super_block *es = sbi->s_es;
 	int i, err;
 
+	dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+
 	flush_workqueue(sbi->dio_unwritten_wq);
 	destroy_workqueue(sbi->dio_unwritten_wq);
 
@@ -941,6 +944,8 @@
 	seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
 	if (test_opt(sb, JOURNAL_ASYNC_COMMIT))
 		seq_puts(seq, ",journal_async_commit");
+	else if (test_opt(sb, JOURNAL_CHECKSUM))
+		seq_puts(seq, ",journal_checksum");
 	if (test_opt(sb, NOBH))
 		seq_puts(seq, ",nobh");
 	if (test_opt(sb, I_VERSION))
@@ -1059,7 +1064,7 @@
 static int ext4_mark_dquot_dirty(struct dquot *dquot);
 static int ext4_write_info(struct super_block *sb, int type);
 static int ext4_quota_on(struct super_block *sb, int type, int format_id,
-				char *path, int remount);
+				char *path);
 static int ext4_quota_on_mount(struct super_block *sb, int type);
 static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
 			       size_t len, loff_t off);
@@ -1081,12 +1086,12 @@
 
 static const struct quotactl_ops ext4_qctl_operations = {
 	.quota_on	= ext4_quota_on,
-	.quota_off	= vfs_quota_off,
-	.quota_sync	= vfs_quota_sync,
-	.get_info	= vfs_get_dqinfo,
-	.set_info	= vfs_set_dqinfo,
-	.get_dqblk	= vfs_get_dqblk,
-	.set_dqblk	= vfs_set_dqblk
+	.quota_off	= dquot_quota_off,
+	.quota_sync	= dquot_quota_sync,
+	.get_info	= dquot_get_dqinfo,
+	.set_info	= dquot_set_dqinfo,
+	.get_dqblk	= dquot_get_dqblk,
+	.set_dqblk	= dquot_set_dqblk
 };
 #endif
 
@@ -2051,7 +2056,7 @@
 	/* Turn quotas off */
 	for (i = 0; i < MAXQUOTAS; i++) {
 		if (sb_dqopt(sb)->files[i])
-			vfs_quota_off(sb, i, 0);
+			dquot_quota_off(sb, i);
 	}
 #endif
 	sb->s_flags = s_flags; /* Restore MS_RDONLY status */
@@ -2213,7 +2218,7 @@
 struct ext4_attr {
 	struct attribute attr;
 	ssize_t (*show)(struct ext4_attr *, struct ext4_sb_info *, char *);
-	ssize_t (*store)(struct ext4_attr *, struct ext4_sb_info *, 
+	ssize_t (*store)(struct ext4_attr *, struct ext4_sb_info *,
 			 const char *, size_t);
 	int offset;
 };
@@ -2430,6 +2435,7 @@
 				__releases(kernel_lock)
 				__acquires(kernel_lock)
 {
+	char *orig_data = kstrdup(data, GFP_KERNEL);
 	struct buffer_head *bh;
 	struct ext4_super_block *es = NULL;
 	struct ext4_sb_info *sbi;
@@ -2793,24 +2799,6 @@
 	get_random_bytes(&sbi->s_next_generation, sizeof(u32));
 	spin_lock_init(&sbi->s_next_gen_lock);
 
-	err = percpu_counter_init(&sbi->s_freeblocks_counter,
-			ext4_count_free_blocks(sb));
-	if (!err) {
-		err = percpu_counter_init(&sbi->s_freeinodes_counter,
-				ext4_count_free_inodes(sb));
-	}
-	if (!err) {
-		err = percpu_counter_init(&sbi->s_dirs_counter,
-				ext4_count_dirs(sb));
-	}
-	if (!err) {
-		err = percpu_counter_init(&sbi->s_dirtyblocks_counter, 0);
-	}
-	if (err) {
-		ext4_msg(sb, KERN_ERR, "insufficient memory");
-		goto failed_mount3;
-	}
-
 	sbi->s_stripe = ext4_get_stripe_size(sbi);
 	sbi->s_max_writeback_mb_bump = 128;
 
@@ -2910,6 +2898,20 @@
 	set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
 
 no_journal:
+	err = percpu_counter_init(&sbi->s_freeblocks_counter,
+				  ext4_count_free_blocks(sb));
+	if (!err)
+		err = percpu_counter_init(&sbi->s_freeinodes_counter,
+					  ext4_count_free_inodes(sb));
+	if (!err)
+		err = percpu_counter_init(&sbi->s_dirs_counter,
+					  ext4_count_dirs(sb));
+	if (!err)
+		err = percpu_counter_init(&sbi->s_dirtyblocks_counter, 0);
+	if (err) {
+		ext4_msg(sb, KERN_ERR, "insufficient memory");
+		goto failed_mount_wq;
+	}
 	if (test_opt(sb, NOBH)) {
 		if (!(test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)) {
 			ext4_msg(sb, KERN_WARNING, "Ignoring nobh option - "
@@ -3001,7 +3003,7 @@
 	err = ext4_setup_system_zone(sb);
 	if (err) {
 		ext4_msg(sb, KERN_ERR, "failed to initialize system "
-			 "zone (%d)\n", err);
+			 "zone (%d)", err);
 		goto failed_mount4;
 	}
 
@@ -3040,9 +3042,11 @@
 	} else
 		descr = "out journal";
 
-	ext4_msg(sb, KERN_INFO, "mounted filesystem with%s", descr);
+	ext4_msg(sb, KERN_INFO, "mounted filesystem with%s. "
+		"Opts: %s", descr, orig_data);
 
 	lock_kernel();
+	kfree(orig_data);
 	return 0;
 
 cantfind_ext4:
@@ -3059,6 +3063,10 @@
 		jbd2_journal_destroy(sbi->s_journal);
 		sbi->s_journal = NULL;
 	}
+	percpu_counter_destroy(&sbi->s_freeblocks_counter);
+	percpu_counter_destroy(&sbi->s_freeinodes_counter);
+	percpu_counter_destroy(&sbi->s_dirs_counter);
+	percpu_counter_destroy(&sbi->s_dirtyblocks_counter);
 failed_mount3:
 	if (sbi->s_flex_groups) {
 		if (is_vmalloc_addr(sbi->s_flex_groups))
@@ -3066,10 +3074,6 @@
 		else
 			kfree(sbi->s_flex_groups);
 	}
-	percpu_counter_destroy(&sbi->s_freeblocks_counter);
-	percpu_counter_destroy(&sbi->s_freeinodes_counter);
-	percpu_counter_destroy(&sbi->s_dirs_counter);
-	percpu_counter_destroy(&sbi->s_dirtyblocks_counter);
 failed_mount2:
 	for (i = 0; i < db_count; i++)
 		brelse(sbi->s_group_desc[i]);
@@ -3089,6 +3093,7 @@
 	kfree(sbi->s_blockgroup_lock);
 	kfree(sbi);
 	lock_kernel();
+	kfree(orig_data);
 	return ret;
 }
 
@@ -3380,7 +3385,7 @@
 	if (!(sb->s_flags & MS_RDONLY))
 		es->s_wtime = cpu_to_le32(get_seconds());
 	es->s_kbytes_written =
-		cpu_to_le64(EXT4_SB(sb)->s_kbytes_written + 
+		cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
 			    ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
 			      EXT4_SB(sb)->s_sectors_written_start) >> 1));
 	ext4_free_blocks_count_set(es, percpu_counter_sum_positive(
@@ -3485,8 +3490,10 @@
 		return 0;
 
 	journal = EXT4_SB(sb)->s_journal;
-	if (journal)
+	if (journal) {
+		vfs_check_frozen(sb, SB_FREEZE_WRITE);
 		ret = ext4_journal_force_commit(journal);
+	}
 
 	return ret;
 }
@@ -3535,18 +3542,16 @@
 	 * the journal.
 	 */
 	error = jbd2_journal_flush(journal);
-	if (error < 0) {
-	out:
-		jbd2_journal_unlock_updates(journal);
-		return error;
-	}
+	if (error < 0)
+		goto out;
 
 	/* Journal blocked and flushed, clear needs_recovery flag. */
 	EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
 	error = ext4_commit_super(sb, 1);
-	if (error)
-		goto out;
-	return 0;
+out:
+	/* we rely on s_frozen to stop further updates */
+	jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
+	return error;
 }
 
 /*
@@ -3563,7 +3568,6 @@
 	EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
 	ext4_commit_super(sb, 1);
 	unlock_super(sb);
-	jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
 	return 0;
 }
 
@@ -3574,12 +3578,14 @@
 	ext4_fsblk_t n_blocks_count = 0;
 	unsigned long old_sb_flags;
 	struct ext4_mount_options old_opts;
+	int enable_quota = 0;
 	ext4_group_t g;
 	unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO;
 	int err;
 #ifdef CONFIG_QUOTA
 	int i;
 #endif
+	char *orig_data = kstrdup(data, GFP_KERNEL);
 
 	lock_kernel();
 
@@ -3630,6 +3636,10 @@
 		}
 
 		if (*flags & MS_RDONLY) {
+			err = dquot_suspend(sb, -1);
+			if (err < 0)
+				goto restore_opts;
+
 			/*
 			 * First of all, the unconditional stuff we have to do
 			 * to disable replay of the journal when we next remount
@@ -3698,6 +3708,7 @@
 				goto restore_opts;
 			if (!ext4_setup_super(sb, es, 0))
 				sb->s_flags &= ~MS_RDONLY;
+			enable_quota = 1;
 		}
 	}
 	ext4_setup_system_zone(sb);
@@ -3713,6 +3724,11 @@
 #endif
 	unlock_super(sb);
 	unlock_kernel();
+	if (enable_quota)
+		dquot_resume(sb, -1);
+
+	ext4_msg(sb, KERN_INFO, "re-mounted. Opts: %s", orig_data);
+	kfree(orig_data);
 	return 0;
 
 restore_opts:
@@ -3734,6 +3750,7 @@
 #endif
 	unlock_super(sb);
 	unlock_kernel();
+	kfree(orig_data);
 	return err;
 }
 
@@ -3906,24 +3923,21 @@
  */
 static int ext4_quota_on_mount(struct super_block *sb, int type)
 {
-	return vfs_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
-				  EXT4_SB(sb)->s_jquota_fmt, type);
+	return dquot_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
+					EXT4_SB(sb)->s_jquota_fmt, type);
 }
 
 /*
  * Standard function to be called on quota_on
  */
 static int ext4_quota_on(struct super_block *sb, int type, int format_id,
-			 char *name, int remount)
+			 char *name)
 {
 	int err;
 	struct path path;
 
 	if (!test_opt(sb, QUOTA))
 		return -EINVAL;
-	/* When remounting, no checks are needed and in fact, name is NULL */
-	if (remount)
-		return vfs_quota_on(sb, type, format_id, name, remount);
 
 	err = kern_path(name, LOOKUP_FOLLOW, &path);
 	if (err)
@@ -3962,7 +3976,7 @@
 		}
 	}
 
-	err = vfs_quota_on_path(sb, type, format_id, &path);
+	err = dquot_quota_on_path(sb, type, format_id, &path);
 	path_put(&path);
 	return err;
 }
@@ -4141,6 +4155,7 @@
 {
 	int err;
 
+	ext4_check_flag_values();
 	err = init_ext4_system_zone();
 	if (err)
 		return err;
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index 00740cb..ed9354a 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -34,6 +34,7 @@
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
+	.setattr	= ext4_setattr,
 #ifdef CONFIG_EXT4_FS_XATTR
 	.setxattr	= generic_setxattr,
 	.getxattr	= generic_getxattr,
@@ -45,6 +46,7 @@
 const struct inode_operations ext4_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= ext4_follow_link,
+	.setattr	= ext4_setattr,
 #ifdef CONFIG_EXT4_FS_XATTR
 	.setxattr	= generic_setxattr,
 	.getxattr	= generic_getxattr,
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 2de0e95..0433800 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -228,9 +228,8 @@
 		atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
 	if (ext4_xattr_check_block(bh)) {
 bad_block:
-		ext4_error(inode->i_sb,
-			   "inode %lu: bad block %llu", inode->i_ino,
-			   EXT4_I(inode)->i_file_acl);
+		EXT4_ERROR_INODE(inode, "bad block %llu",
+				 EXT4_I(inode)->i_file_acl);
 		error = -EIO;
 		goto cleanup;
 	}
@@ -372,9 +371,8 @@
 	ea_bdebug(bh, "b_count=%d, refcount=%d",
 		atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
 	if (ext4_xattr_check_block(bh)) {
-		ext4_error(inode->i_sb,
-			   "inode %lu: bad block %llu", inode->i_ino,
-			   EXT4_I(inode)->i_file_acl);
+		EXT4_ERROR_INODE(inode, "bad block %llu",
+				 EXT4_I(inode)->i_file_acl);
 		error = -EIO;
 		goto cleanup;
 	}
@@ -666,8 +664,8 @@
 			atomic_read(&(bs->bh->b_count)),
 			le32_to_cpu(BHDR(bs->bh)->h_refcount));
 		if (ext4_xattr_check_block(bs->bh)) {
-			ext4_error(sb, "inode %lu: bad block %llu",
-				   inode->i_ino, EXT4_I(inode)->i_file_acl);
+			EXT4_ERROR_INODE(inode, "bad block %llu",
+					 EXT4_I(inode)->i_file_acl);
 			error = -EIO;
 			goto cleanup;
 		}
@@ -820,7 +818,7 @@
 						EXT4_I(inode)->i_block_group);
 
 			/* non-extent files can't have physical blocks past 2^32 */
-			if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+			if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 				goal = goal & EXT4_MAX_BLOCK_FILE_PHYS;
 
 			block = ext4_new_meta_blocks(handle, inode,
@@ -828,7 +826,7 @@
 			if (error)
 				goto cleanup;
 
-			if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+			if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 				BUG_ON(block > EXT4_MAX_BLOCK_FILE_PHYS);
 
 			ea_idebug(inode, "creating block %d", block);
@@ -880,8 +878,8 @@
 	goto cleanup;
 
 bad_block:
-	ext4_error(inode->i_sb, "inode %lu: bad block %llu",
-		   inode->i_ino, EXT4_I(inode)->i_file_acl);
+	EXT4_ERROR_INODE(inode, "bad block %llu",
+			 EXT4_I(inode)->i_file_acl);
 	goto cleanup;
 
 #undef header
@@ -1194,8 +1192,8 @@
 		if (!bh)
 			goto cleanup;
 		if (ext4_xattr_check_block(bh)) {
-			ext4_error(inode->i_sb, "inode %lu: bad block %llu",
-				   inode->i_ino, EXT4_I(inode)->i_file_acl);
+			EXT4_ERROR_INODE(inode, "bad block %llu",
+					 EXT4_I(inode)->i_file_acl);
 			error = -EIO;
 			goto cleanup;
 		}
@@ -1372,14 +1370,14 @@
 		goto cleanup;
 	bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
 	if (!bh) {
-		ext4_error(inode->i_sb, "inode %lu: block %llu read error",
-			   inode->i_ino, EXT4_I(inode)->i_file_acl);
+		EXT4_ERROR_INODE(inode, "block %llu read error",
+				 EXT4_I(inode)->i_file_acl);
 		goto cleanup;
 	}
 	if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
 	    BHDR(bh)->h_blocks != cpu_to_le32(1)) {
-		ext4_error(inode->i_sb, "inode %lu: bad block %llu",
-			   inode->i_ino, EXT4_I(inode)->i_file_acl);
+		EXT4_ERROR_INODE(inode, "bad block %llu",
+				 EXT4_I(inode)->i_file_acl);
 		goto cleanup;
 	}
 	ext4_xattr_release_block(handle, inode, bh);
@@ -1504,9 +1502,8 @@
 		}
 		bh = sb_bread(inode->i_sb, ce->e_block);
 		if (!bh) {
-			ext4_error(inode->i_sb,
-				"inode %lu: block %lu read error",
-				inode->i_ino, (unsigned long) ce->e_block);
+			EXT4_ERROR_INODE(inode, "block %lu read error",
+					 (unsigned long) ce->e_block);
 		} else if (le32_to_cpu(BHDR(bh)->h_refcount) >=
 				EXT4_XATTR_REFCOUNT_MAX) {
 			ea_idebug(inode, "block %lu refcount %d>=%d",
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index 53dba57..27ac257 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -306,11 +306,11 @@
 extern const struct file_operations fat_file_operations;
 extern const struct inode_operations fat_file_inode_operations;
 extern int fat_setattr(struct dentry * dentry, struct iattr * attr);
-extern void fat_truncate(struct inode *inode);
+extern int fat_setsize(struct inode *inode, loff_t offset);
+extern void fat_truncate_blocks(struct inode *inode, loff_t offset);
 extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry,
 		       struct kstat *stat);
-extern int fat_file_fsync(struct file *file, struct dentry *dentry,
-			  int datasync);
+extern int fat_file_fsync(struct file *file, int datasync);
 
 /* fat/inode.c */
 extern void fat_attach(struct inode *inode, loff_t i_pos);
diff --git a/fs/fat/file.c b/fs/fat/file.c
index a14c2f6..990dfae 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -149,12 +149,12 @@
 	return 0;
 }
 
-int fat_file_fsync(struct file *filp, struct dentry *dentry, int datasync)
+int fat_file_fsync(struct file *filp, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = filp->f_mapping->host;
 	int res, err;
 
-	res = simple_fsync(filp, dentry, datasync);
+	res = generic_file_fsync(filp, datasync);
 	err = sync_mapping_buffers(MSDOS_SB(inode->i_sb)->fat_inode->i_mapping);
 
 	return res ? res : err;
@@ -283,7 +283,7 @@
 	return fat_free_clusters(inode, free_start);
 }
 
-void fat_truncate(struct inode *inode)
+void fat_truncate_blocks(struct inode *inode, loff_t offset)
 {
 	struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
 	const unsigned int cluster_size = sbi->cluster_size;
@@ -293,10 +293,10 @@
 	 * This protects against truncating a file bigger than it was then
 	 * trying to write into the hole.
 	 */
-	if (MSDOS_I(inode)->mmu_private > inode->i_size)
-		MSDOS_I(inode)->mmu_private = inode->i_size;
+	if (MSDOS_I(inode)->mmu_private > offset)
+		MSDOS_I(inode)->mmu_private = offset;
 
-	nr_clusters = (inode->i_size + (cluster_size - 1)) >> sbi->cluster_bits;
+	nr_clusters = (offset + (cluster_size - 1)) >> sbi->cluster_bits;
 
 	fat_free(inode, nr_clusters);
 	fat_flush_inodes(inode->i_sb, inode, NULL);
@@ -364,6 +364,18 @@
 	return 0;
 }
 
+int fat_setsize(struct inode *inode, loff_t offset)
+{
+	int error;
+
+	error = simple_setsize(inode, offset);
+	if (error)
+		return error;
+	fat_truncate_blocks(inode, offset);
+
+	return error;
+}
+
 #define TIMES_SET_FLAGS	(ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 /* valid file mode bits */
 #define FAT_VALID_MODE	(S_IFREG | S_IFDIR | S_IRWXUGO)
@@ -378,7 +390,8 @@
 	/*
 	 * Expand the file. Since inode_setattr() updates ->i_size
 	 * before calling the ->truncate(), but FAT needs to fill the
-	 * hole before it.
+	 * hole before it. XXX: this is no longer true with new truncate
+	 * sequence.
 	 */
 	if (attr->ia_valid & ATTR_SIZE) {
 		if (attr->ia_size > inode->i_size) {
@@ -427,15 +440,20 @@
 			attr->ia_valid &= ~ATTR_MODE;
 	}
 
-	if (attr->ia_valid)
-		error = inode_setattr(inode, attr);
+	if (attr->ia_valid & ATTR_SIZE) {
+		error = fat_setsize(inode, attr->ia_size);
+		if (error)
+			goto out;
+	}
+
+	generic_setattr(inode, attr);
+	mark_inode_dirty(inode);
 out:
 	return error;
 }
 EXPORT_SYMBOL_GPL(fat_setattr);
 
 const struct inode_operations fat_file_inode_operations = {
-	.truncate	= fat_truncate,
 	.setattr	= fat_setattr,
 	.getattr	= fat_getattr,
 };
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index ed33904..7bf45ae 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -142,14 +142,29 @@
 	return mpage_readpages(mapping, pages, nr_pages, fat_get_block);
 }
 
+static void fat_write_failed(struct address_space *mapping, loff_t to)
+{
+	struct inode *inode = mapping->host;
+
+	if (to > inode->i_size) {
+		truncate_pagecache(inode, to, inode->i_size);
+		fat_truncate_blocks(inode, inode->i_size);
+	}
+}
+
 static int fat_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
+	int err;
+
 	*pagep = NULL;
-	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-				fat_get_block,
+	err = cont_write_begin_newtrunc(file, mapping, pos, len, flags,
+				pagep, fsdata, fat_get_block,
 				&MSDOS_I(mapping->host)->mmu_private);
+	if (err < 0)
+		fat_write_failed(mapping, pos + len);
+	return err;
 }
 
 static int fat_write_end(struct file *file, struct address_space *mapping,
@@ -159,6 +174,8 @@
 	struct inode *inode = mapping->host;
 	int err;
 	err = generic_write_end(file, mapping, pos, len, copied, pagep, fsdata);
+	if (err < len)
+		fat_write_failed(mapping, pos + len);
 	if (!(err < 0) && !(MSDOS_I(inode)->i_attrs & ATTR_ARCH)) {
 		inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
 		MSDOS_I(inode)->i_attrs |= ATTR_ARCH;
@@ -172,7 +189,9 @@
 			     loff_t offset, unsigned long nr_segs)
 {
 	struct file *file = iocb->ki_filp;
-	struct inode *inode = file->f_mapping->host;
+	struct address_space *mapping = file->f_mapping;
+	struct inode *inode = mapping->host;
+	ssize_t ret;
 
 	if (rw == WRITE) {
 		/*
@@ -193,8 +212,12 @@
 	 * FAT need to use the DIO_LOCKING for avoiding the race
 	 * condition of fat_get_block() and ->truncate().
 	 */
-	return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
-				  offset, nr_segs, fat_get_block, NULL);
+	ret = blockdev_direct_IO_newtrunc(rw, iocb, inode, inode->i_sb->s_bdev,
+				iov, offset, nr_segs, fat_get_block, NULL);
+	if (ret < 0 && (rw & WRITE))
+		fat_write_failed(mapping, offset + iov_length(iov, nr_segs));
+
+	return ret;
 }
 
 static sector_t _fat_bmap(struct address_space *mapping, sector_t block)
@@ -429,7 +452,7 @@
 {
 	truncate_inode_pages(&inode->i_data, 0);
 	inode->i_size = 0;
-	fat_truncate(inode);
+	fat_truncate_blocks(inode, 0);
 	clear_inode(inode);
 }
 
diff --git a/fs/file_table.c b/fs/file_table.c
index 32d12b7..5c7d10e 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -194,14 +194,6 @@
 }
 EXPORT_SYMBOL(alloc_file);
 
-void fput(struct file *file)
-{
-	if (atomic_long_dec_and_test(&file->f_count))
-		__fput(file);
-}
-
-EXPORT_SYMBOL(fput);
-
 /**
  * drop_file_write_access - give up ability to write to a file
  * @file: the file to which we will stop writing
@@ -227,10 +219,9 @@
 }
 EXPORT_SYMBOL_GPL(drop_file_write_access);
 
-/* __fput is called from task context when aio completion releases the last
- * last use of a struct file *.  Do not use otherwise.
+/* the real guts of fput() - releasing the last reference to file
  */
-void __fput(struct file *file)
+static void __fput(struct file *file)
 {
 	struct dentry *dentry = file->f_path.dentry;
 	struct vfsmount *mnt = file->f_path.mnt;
@@ -268,6 +259,14 @@
 	mntput(mnt);
 }
 
+void fput(struct file *file)
+{
+	if (atomic_long_dec_and_test(&file->f_count))
+		__fput(file);
+}
+
+EXPORT_SYMBOL(fput);
+
 struct file *fget(unsigned int fd)
 {
 	struct file *file;
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c
index aee049c..0ec7bb2 100644
--- a/fs/freevxfs/vxfs_lookup.c
+++ b/fs/freevxfs/vxfs_lookup.c
@@ -57,6 +57,8 @@
 };
 
 const struct file_operations vxfs_dir_operations = {
+	.llseek =		generic_file_llseek,
+	.read =			generic_read_dir,
 	.readdir =		vxfs_readdir,
 };
 
diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c
index 1e1f286..4a8eb31 100644
--- a/fs/fscache/object-list.c
+++ b/fs/fscache/object-list.c
@@ -103,7 +103,7 @@
 	/* banners (can't represent line 0 by pos 0 as that would involve
 	 * returning a NULL pointer) */
 	if (pos == 0)
-		return (struct fscache_object *) ++(*_pos);
+		return (struct fscache_object *)(long)++(*_pos);
 	if (pos < 3)
 		return (struct fscache_object *)pos;
 
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index eb7e942..e53df5e 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -18,6 +18,7 @@
 #include <linux/slab.h>
 
 MODULE_ALIAS_MISCDEV(FUSE_MINOR);
+MODULE_ALIAS("devname:fuse");
 
 static struct kmem_cache *fuse_req_cachep;
 
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 4787ae6..3cdc5f7 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1156,10 +1156,9 @@
 	return 0;
 }
 
-static int fuse_dir_fsync(struct file *file, struct dentry *de, int datasync)
+static int fuse_dir_fsync(struct file *file, int datasync)
 {
-	/* nfsd can call this with no file */
-	return file ? fuse_fsync_common(file, de, datasync, 1) : 0;
+	return fuse_fsync_common(file, datasync, 1);
 }
 
 static bool update_mtime(unsigned ivalid)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a9f5e13..b5fd6f9 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -351,10 +351,9 @@
 	fuse_release_nowrite(inode);
 }
 
-int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
-		      int isdir)
+int fuse_fsync_common(struct file *file, int datasync, int isdir)
 {
-	struct inode *inode = de->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	struct fuse_file *ff = file->private_data;
 	struct fuse_req *req;
@@ -403,9 +402,9 @@
 	return err;
 }
 
-static int fuse_fsync(struct file *file, struct dentry *de, int datasync)
+static int fuse_fsync(struct file *file, int datasync)
 {
-	return fuse_fsync_common(file, de, datasync, 0);
+	return fuse_fsync_common(file, datasync, 0);
 }
 
 void fuse_read_fill(struct fuse_req *req, struct file *file, loff_t pos,
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 01cc462..2c0d14a 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -568,8 +568,7 @@
 /**
  * Send FSYNC or FSYNCDIR request
  */
-int fuse_fsync_common(struct file *file, struct dentry *de, int datasync,
-		      int isdir);
+int fuse_fsync_common(struct file *file, int datasync, int isdir);
 
 /**
  * Notify poll wakeup
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index a739a0a..9f8b525 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -700,8 +700,14 @@
 		return 0;
 
 	page_cache_release(page);
+
+	/*
+	 * XXX(hch): the call below should probably be replaced with
+	 * a call to the gfs2-specific truncate blocks helper to actually
+	 * release disk blocks..
+	 */
 	if (pos + len > ip->i_inode.i_size)
-		vmtruncate(&ip->i_inode, ip->i_inode.i_size);
+		simple_setsize(&ip->i_inode, ip->i_inode.i_size);
 out_endtrans:
 	gfs2_trans_end(sdp);
 out_trans_fail:
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index b20bfcc..ed9a94f 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -554,9 +554,9 @@
  * Returns: errno
  */
 
-static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync)
+static int gfs2_fsync(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC);
 	int ret = 0;
 
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 4e64352..98cdd05 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -1071,6 +1071,9 @@
 	return error;
 }
 
+/*
+ * XXX: should be changed to have proper ordering by opencoding simple_setsize
+ */
 static int setattr_size(struct inode *inode, struct iattr *attr)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
@@ -1081,7 +1084,7 @@
 		error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks);
 		if (error)
 			return error;
-		error = vmtruncate(inode, attr->ia_size);
+		error = simple_setsize(inode, attr->ia_size);
 		gfs2_trans_end(sdp);
 		if (error) 
 			return error;
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 3a029d8..87ac189 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -411,9 +411,9 @@
 	return 0;
 }
 
-int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+int hostfs_fsync(struct file *file, int datasync)
 {
-	return fsync_file(HOSTFS_I(dentry->d_inode)->fd, datasync);
+	return fsync_file(HOSTFS_I(file->f_mapping->host)->fd, datasync);
 }
 
 static const struct file_operations hostfs_file_fops = {
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
index 3efabff..a9ae9bf 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -19,9 +19,9 @@
 	return 0;
 }
 
-int hpfs_file_fsync(struct file *file, struct dentry *dentry, int datasync)
+int hpfs_file_fsync(struct file *file, int datasync)
 {
-	/*return file_fsync(file, dentry);*/
+	/*return file_fsync(file, datasync);*/
 	return 0; /* Don't fsync :-) */
 }
 
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 97bf738..75f9d43 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -268,7 +268,7 @@
 
 /* file.c */
 
-int hpfs_file_fsync(struct file *, struct dentry *, int);
+int hpfs_file_fsync(struct file *, int);
 extern const struct file_operations hpfs_file_ops;
 extern const struct inode_operations hpfs_file_iops;
 extern const struct address_space_operations hpfs_aops;
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 2e4dfa8..826c3f9 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -587,7 +587,7 @@
 	return err;
 }
 
-static int hppfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+static int hppfs_fsync(struct file *file, int datasync)
 {
 	return 0;
 }
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index a0bbd3d..a4e9a7e 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -688,7 +688,7 @@
 const struct file_operations hugetlbfs_file_operations = {
 	.read			= hugetlbfs_read,
 	.mmap			= hugetlbfs_file_mmap,
-	.fsync			= simple_sync_file,
+	.fsync			= noop_fsync,
 	.get_unmapped_area	= hugetlb_get_unmapped_area,
 };
 
diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index b9ab69b..e0aca9a 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -272,6 +272,7 @@
 
 const struct file_operations isofs_dir_operations =
 {
+	.llseek = generic_file_llseek,
 	.read = generic_read_dir,
 	.readdir = isofs_readdir,
 };
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index bfc70f5..e214d68 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1311,7 +1311,6 @@
 	if (handle->h_sync)
 		transaction->t_synchronous_commit = 1;
 	current->journal_info = NULL;
-	spin_lock(&journal->j_state_lock);
 	spin_lock(&transaction->t_handle_lock);
 	transaction->t_outstanding_credits -= handle->h_buffer_credits;
 	transaction->t_updates--;
@@ -1340,8 +1339,7 @@
 		jbd_debug(2, "transaction too old, requesting commit for "
 					"handle %p\n", handle);
 		/* This is non-blocking */
-		__jbd2_log_start_commit(journal, transaction->t_tid);
-		spin_unlock(&journal->j_state_lock);
+		jbd2_log_start_commit(journal, transaction->t_tid);
 
 		/*
 		 * Special case: JBD2_SYNC synchronous updates require us
@@ -1351,7 +1349,6 @@
 			err = jbd2_log_wait_commit(journal, tid);
 	} else {
 		spin_unlock(&transaction->t_handle_lock);
-		spin_unlock(&journal->j_state_lock);
 	}
 
 	lock_map_release(&handle->h_lockdep_map);
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index e7291c1..8134970 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -26,9 +26,9 @@
 			struct page **pagep, void **fsdata);
 static int jffs2_readpage (struct file *filp, struct page *pg);
 
-int jffs2_fsync(struct file *filp, struct dentry *dentry, int datasync)
+int jffs2_fsync(struct file *filp, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = filp->f_mapping->host;
 	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 
 	/* Trigger GC to flush any pending writes for this inode */
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 86e0821..8bc2c80 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -169,13 +169,13 @@
 	mutex_unlock(&f->sem);
 	jffs2_complete_reservation(c);
 
-	/* We have to do the vmtruncate() without f->sem held, since
+	/* We have to do the simple_setsize() without f->sem held, since
 	   some pages may be locked and waiting for it in readpage().
 	   We are protected from a simultaneous write() extending i_size
 	   back past iattr->ia_size, because do_truncate() holds the
 	   generic inode semaphore. */
 	if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) {
-		vmtruncate(inode, iattr->ia_size);	
+		simple_setsize(inode, iattr->ia_size);
 		inode->i_blocks = (inode->i_size + 511) >> 9;
 	}	
 
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 035a767..4791aac 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -158,7 +158,7 @@
 extern const struct file_operations jffs2_file_operations;
 extern const struct inode_operations jffs2_file_inode_operations;
 extern const struct address_space_operations jffs2_file_address_operations;
-int jffs2_fsync(struct file *, struct dentry *, int);
+int jffs2_fsync(struct file *, int);
 int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
 
 /* ioctl.c */
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 85d9ec6..127263c 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -27,9 +27,9 @@
 #include "jfs_acl.h"
 #include "jfs_debug.h"
 
-int jfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+int jfs_fsync(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	int rc = 0;
 
 	if (!(inode->i_state & I_DIRTY) ||
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 9e6bda3..11042b1 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -21,7 +21,7 @@
 struct fid;
 
 extern struct inode *ialloc(struct inode *, umode_t);
-extern int jfs_fsync(struct file *, struct dentry *, int);
+extern int jfs_fsync(struct file *, int);
 extern long jfs_ioctl(struct file *, unsigned int, unsigned long);
 extern long jfs_compat_ioctl(struct file *, unsigned int, unsigned long);
 extern struct inode *jfs_iget(struct super_block *, unsigned long);
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index b66832a..b38f96b 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -179,6 +179,8 @@
 
 	jfs_info("In jfs_put_super");
 
+	dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+
 	lock_kernel();
 
 	rc = jfs_umount(sb);
@@ -396,10 +398,20 @@
 
 		JFS_SBI(sb)->flag = flag;
 		ret = jfs_mount_rw(sb, 1);
+
+		/* mark the fs r/w for quota activity */
+		sb->s_flags &= ~MS_RDONLY;
+
 		unlock_kernel();
+		dquot_resume(sb, -1);
 		return ret;
 	}
 	if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) {
+		rc = dquot_suspend(sb, -1);
+		if (rc < 0) {
+			unlock_kernel();
+			return rc;
+		}
 		rc = jfs_umount_rw(sb);
 		JFS_SBI(sb)->flag = flag;
 		unlock_kernel();
@@ -469,6 +481,10 @@
 	 */
 	sb->s_op = &jfs_super_operations;
 	sb->s_export_op = &jfs_export_operations;
+#ifdef CONFIG_QUOTA
+	sb->dq_op = &dquot_operations;
+	sb->s_qcop = &dquot_quotactl_ops;
+#endif
 
 	/*
 	 * Initialize direct-mapping inode/address-space
diff --git a/fs/libfs.c b/fs/libfs.c
index 232bea4..09e1016 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -8,6 +8,7 @@
 #include <linux/slab.h>
 #include <linux/mount.h>
 #include <linux/vfs.h>
+#include <linux/quotaops.h>
 #include <linux/mutex.h>
 #include <linux/exportfs.h>
 #include <linux/writeback.h>
@@ -58,11 +59,6 @@
 	return NULL;
 }
 
-int simple_sync_file(struct file * file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
- 
 int dcache_dir_open(struct inode *inode, struct file *file)
 {
 	static struct qstr cursor_name = {.len = 1, .name = "."};
@@ -190,7 +186,7 @@
 	.llseek		= dcache_dir_lseek,
 	.read		= generic_read_dir,
 	.readdir	= dcache_readdir,
-	.fsync		= simple_sync_file,
+	.fsync		= noop_fsync,
 };
 
 const struct inode_operations simple_dir_inode_operations = {
@@ -330,6 +326,81 @@
 	return 0;
 }
 
+/**
+ * simple_setsize - handle core mm and vfs requirements for file size change
+ * @inode: inode
+ * @newsize: new file size
+ *
+ * Returns 0 on success, -error on failure.
+ *
+ * simple_setsize must be called with inode_mutex held.
+ *
+ * simple_setsize will check that the requested new size is OK (see
+ * inode_newsize_ok), and then will perform the necessary i_size update
+ * and pagecache truncation (if necessary). It will be typically be called
+ * from the filesystem's setattr function when ATTR_SIZE is passed in.
+ *
+ * The inode itself must have correct permissions and attributes to allow
+ * i_size to be changed, this function then just checks that the new size
+ * requested is valid.
+ *
+ * In the case of simple in-memory filesystems with inodes stored solely
+ * in the inode cache, and file data in the pagecache, nothing more needs
+ * to be done to satisfy a truncate request. Filesystems with on-disk
+ * blocks for example will need to free them in the case of truncate, in
+ * that case it may be easier not to use simple_setsize (but each of its
+ * components will likely be required at some point to update pagecache
+ * and inode etc).
+ */
+int simple_setsize(struct inode *inode, loff_t newsize)
+{
+	loff_t oldsize;
+	int error;
+
+	error = inode_newsize_ok(inode, newsize);
+	if (error)
+		return error;
+
+	oldsize = inode->i_size;
+	i_size_write(inode, newsize);
+	truncate_pagecache(inode, oldsize, newsize);
+
+	return error;
+}
+EXPORT_SYMBOL(simple_setsize);
+
+/**
+ * simple_setattr - setattr for simple in-memory filesystem
+ * @dentry: dentry
+ * @iattr: iattr structure
+ *
+ * Returns 0 on success, -error on failure.
+ *
+ * simple_setattr implements setattr for an in-memory filesystem which
+ * does not store its own file data or metadata (eg. uses the page cache
+ * and inode cache as its data store).
+ */
+int simple_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+	struct inode *inode = dentry->d_inode;
+	int error;
+
+	error = inode_change_ok(inode, iattr);
+	if (error)
+		return error;
+
+	if (iattr->ia_valid & ATTR_SIZE) {
+		error = simple_setsize(inode, iattr->ia_size);
+		if (error)
+			return error;
+	}
+
+	generic_setattr(inode, iattr);
+
+	return error;
+}
+EXPORT_SYMBOL(simple_setattr);
+
 int simple_readpage(struct file *file, struct page *page)
 {
 	clear_highpage(page);
@@ -851,13 +922,22 @@
 }
 EXPORT_SYMBOL_GPL(generic_fh_to_parent);
 
-int simple_fsync(struct file *file, struct dentry *dentry, int datasync)
+/**
+ * generic_file_fsync - generic fsync implementation for simple filesystems
+ * @file:	file to synchronize
+ * @datasync:	only synchronize essential metadata if true
+ *
+ * This is a generic implementation of the fsync method for simple
+ * filesystems which track all non-inode metadata in the buffers list
+ * hanging off the address_space structure.
+ */
+int generic_file_fsync(struct file *file, int datasync)
 {
 	struct writeback_control wbc = {
 		.sync_mode = WB_SYNC_ALL,
 		.nr_to_write = 0, /* metadata-only; caller takes care of data */
 	};
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	int err;
 	int ret;
 
@@ -872,7 +952,15 @@
 		ret = err;
 	return ret;
 }
-EXPORT_SYMBOL(simple_fsync);
+EXPORT_SYMBOL(generic_file_fsync);
+
+/*
+ * No-op implementation of ->fsync for in-memory filesystems.
+ */
+int noop_fsync(struct file *file, int datasync)
+{
+	return 0;
+}
 
 EXPORT_SYMBOL(dcache_dir_close);
 EXPORT_SYMBOL(dcache_dir_lseek);
@@ -895,7 +983,7 @@
 EXPORT_SYMBOL(simple_rename);
 EXPORT_SYMBOL(simple_rmdir);
 EXPORT_SYMBOL(simple_statfs);
-EXPORT_SYMBOL(simple_sync_file);
+EXPORT_SYMBOL(noop_fsync);
 EXPORT_SYMBOL(simple_unlink);
 EXPORT_SYMBOL(simple_read_from_buffer);
 EXPORT_SYMBOL(simple_write_to_buffer);
diff --git a/fs/logfs/file.c b/fs/logfs/file.c
index 0de5240..abe1caf 100644
--- a/fs/logfs/file.c
+++ b/fs/logfs/file.c
@@ -219,9 +219,9 @@
 	}
 }
 
-int logfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+int logfs_fsync(struct file *file, int datasync)
 {
-	struct super_block *sb = dentry->d_inode->i_sb;
+	struct super_block *sb = file->f_mapping->host->i_sb;
 
 	logfs_write_anchor(sb);
 	return 0;
diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
index 1a9db84..c838c4d 100644
--- a/fs/logfs/logfs.h
+++ b/fs/logfs/logfs.h
@@ -506,7 +506,7 @@
 int logfs_readpage(struct file *file, struct page *page);
 int logfs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 		unsigned long arg);
-int logfs_fsync(struct file *file, struct dentry *dentry, int datasync);
+int logfs_fsync(struct file *file, int datasync);
 
 /* gc.c */
 u32 get_best_cand(struct super_block *sb, struct candidate_list *list, u32 *ec);
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index 6198731..9196958 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -22,7 +22,7 @@
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= minix_readdir,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 };
 
 static inline void dir_put_page(struct page *page)
@@ -72,11 +72,8 @@
 {
 	struct address_space *mapping = dir->i_mapping;
 	struct page *page = read_mapping_page(mapping, n, NULL);
-	if (!IS_ERR(page)) {
+	if (!IS_ERR(page))
 		kmap(page);
-		if (!PageUptodate(page))
-			goto fail;
-	}
 	return page;
 
 fail:
diff --git a/fs/minix/file.c b/fs/minix/file.c
index 3eec3e6..d5320ff 100644
--- a/fs/minix/file.c
+++ b/fs/minix/file.c
@@ -19,7 +19,7 @@
 	.write		= do_sync_write,
 	.aio_write	= generic_file_aio_write,
 	.mmap		= generic_file_mmap,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 	.splice_read	= generic_file_splice_read,
 };
 
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index f230109..13487ad 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -20,6 +20,9 @@
 	return (block_t *)minix_i(inode)->u.i2_data;
 }
 
+#define DIRCOUNT 7
+#define INDIRCOUNT(sb) (1 << ((sb)->s_blocksize_bits - 2))
+
 static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
 {
 	int n = 0;
@@ -34,21 +37,21 @@
 			printk("MINIX-fs: block_to_path: "
 			       "block %ld too big on dev %s\n",
 				block, bdevname(sb->s_bdev, b));
-	} else if (block < 7) {
+	} else if (block < DIRCOUNT) {
 		offsets[n++] = block;
-	} else if ((block -= 7) < 256) {
-		offsets[n++] = 7;
+	} else if ((block -= DIRCOUNT) < INDIRCOUNT(sb)) {
+		offsets[n++] = DIRCOUNT;
 		offsets[n++] = block;
-	} else if ((block -= 256) < 256*256) {
-		offsets[n++] = 8;
-		offsets[n++] = block>>8;
-		offsets[n++] = block & 255;
+	} else if ((block -= INDIRCOUNT(sb)) < INDIRCOUNT(sb) * INDIRCOUNT(sb)) {
+		offsets[n++] = DIRCOUNT + 1;
+		offsets[n++] = block / INDIRCOUNT(sb);
+		offsets[n++] = block % INDIRCOUNT(sb);
 	} else {
-		block -= 256*256;
-		offsets[n++] = 9;
-		offsets[n++] = block>>16;
-		offsets[n++] = (block>>8) & 255;
-		offsets[n++] = block & 255;
+		block -= INDIRCOUNT(sb) * INDIRCOUNT(sb);
+		offsets[n++] = DIRCOUNT + 2;
+		offsets[n++] = (block / INDIRCOUNT(sb)) / INDIRCOUNT(sb);
+		offsets[n++] = (block / INDIRCOUNT(sb)) % INDIRCOUNT(sb);
+		offsets[n++] = block % INDIRCOUNT(sb);
 	}
 	return n;
 }
diff --git a/fs/namei.c b/fs/namei.c
index 48e1f60..868d0cb 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1621,6 +1621,7 @@
 	case LAST_DOTDOT:
 		follow_dotdot(nd);
 		dir = nd->path.dentry;
+	case LAST_DOT:
 		if (nd->path.mnt->mnt_sb->s_type->fs_flags & FS_REVAL_DOT) {
 			if (!dir->d_op->d_revalidate(dir, nd)) {
 				error = -ESTALE;
@@ -1628,7 +1629,6 @@
 			}
 		}
 		/* fallthrough */
-	case LAST_DOT:
 	case LAST_ROOT:
 		if (open_flag & O_CREAT)
 			goto exit;
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 92dde6f..9578cbe 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -49,6 +49,7 @@
 		      
 const struct file_operations ncp_dir_operations =
 {
+	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= ncp_readdir,
 	.unlocked_ioctl	= ncp_ioctl,
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index b938708..3639cc5 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -22,7 +22,7 @@
 #include <linux/ncp_fs.h>
 #include "ncplib_kernel.h"
 
-static int ncp_fsync(struct file *file, struct dentry *dentry, int datasync)
+static int ncp_fsync(struct file *file, int datasync)
 {
 	return 0;
 }
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index ee9a179..782b431 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -53,7 +53,7 @@
 static int nfs_mknod(struct inode *, struct dentry *, int, dev_t);
 static int nfs_rename(struct inode *, struct dentry *,
 		      struct inode *, struct dentry *);
-static int nfs_fsync_dir(struct file *, struct dentry *, int);
+static int nfs_fsync_dir(struct file *, int);
 static loff_t nfs_llseek_dir(struct file *, loff_t, int);
 
 const struct file_operations nfs_dir_operations = {
@@ -641,8 +641,10 @@
  * All directory operations under NFS are synchronous, so fsync()
  * is a dummy operation.
  */
-static int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
+static int nfs_fsync_dir(struct file *filp, int datasync)
 {
+	struct dentry *dentry = filp->f_path.dentry;
+
 	dfprintk(FILE, "NFS: fsync dir(%s/%s) datasync %d\n",
 			dentry->d_parent->d_name.name, dentry->d_name.name,
 			datasync);
@@ -1741,6 +1743,7 @@
 			clear_bit(NFS_INO_ACL_LRU_SET, &nfsi->flags);
 			smp_mb__after_clear_bit();
 		}
+		spin_unlock(&inode->i_lock);
 	}
 	spin_unlock(&nfs_access_lru_lock);
 	nfs_access_free_list(&head);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index cac96bc..36a5e74 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -53,7 +53,7 @@
 static ssize_t nfs_file_write(struct kiocb *, const struct iovec *iov,
 				unsigned long nr_segs, loff_t pos);
 static int  nfs_file_flush(struct file *, fl_owner_t id);
-static int  nfs_file_fsync(struct file *, struct dentry *dentry, int datasync);
+static int  nfs_file_fsync(struct file *, int datasync);
 static int nfs_check_flags(int flags);
 static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl);
 static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl);
@@ -322,8 +322,9 @@
  * whether any write errors occurred for this process.
  */
 static int
-nfs_file_fsync(struct file *file, struct dentry *dentry, int datasync)
+nfs_file_fsync(struct file *file, int datasync)
 {
+	struct dentry *dentry = file->f_path.dentry;
 	struct nfs_open_context *ctx = nfs_file_open_context(file);
 	struct inode *inode = dentry->d_inode;
 
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 3aea3ca..91679e2 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1386,7 +1386,7 @@
 	int res = 0;
 
 	if (!nfs_commit_set_lock(NFS_I(inode), may_wait))
-		goto out;
+		goto out_mark_dirty;
 	spin_lock(&inode->i_lock);
 	res = nfs_scan_commit(inode, &head, 0, 0);
 	spin_unlock(&inode->i_lock);
@@ -1398,9 +1398,18 @@
 			wait_on_bit(&NFS_I(inode)->flags, NFS_INO_COMMIT,
 					nfs_wait_bit_killable,
 					TASK_KILLABLE);
+		else
+			goto out_mark_dirty;
 	} else
 		nfs_commit_clear_lock(NFS_I(inode));
-out:
+	return res;
+	/* Note: If we exit without ensuring that the commit is complete,
+	 * we must mark the inode as dirty. Otherwise, future calls to
+	 * sync_inode() with the WB_SYNC_ALL flag set will fail to ensure
+	 * that the data is on the disk.
+	 */
+out_mark_dirty:
+	__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
 	return res;
 }
 
@@ -1509,14 +1518,17 @@
 	};
 	int ret;
 
-	while(PagePrivate(page)) {
+	for (;;) {
 		wait_on_page_writeback(page);
 		if (clear_page_dirty_for_io(page)) {
 			ret = nfs_writepage_locked(page, &wbc);
 			if (ret < 0)
 				goto out_error;
+			continue;
 		}
-		ret = sync_inode(inode, &wbc);
+		if (!PagePrivate(page))
+			break;
+		ret = nfs_commit_inode(inode, FLUSH_SYNC);
 		if (ret < 0)
 			goto out_error;
 	}
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 30292df..c9a30d7 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -27,7 +27,7 @@
 #include "nilfs.h"
 #include "segment.h"
 
-int nilfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
+int nilfs_sync_file(struct file *file, int datasync)
 {
 	/*
 	 * Called from fsync() system call
@@ -37,7 +37,7 @@
 	 * This function should be implemented when the writeback function
 	 * will be implemented.
 	 */
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	int err;
 
 	if (!nilfs_inode_dirty(inode))
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 8723e5b..47d6d79 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -228,7 +228,7 @@
 			   struct page *, struct inode *);
 
 /* file.c */
-extern int nilfs_sync_file(struct file *, struct dentry *, int);
+extern int nilfs_sync_file(struct file *, int);
 
 /* ioctl.c */
 long nilfs_ioctl(struct file *, unsigned int, unsigned long);
diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
index fe44d3f..0f48e7c 100644
--- a/fs/ntfs/dir.c
+++ b/fs/ntfs/dir.c
@@ -1527,10 +1527,9 @@
  * this problem for now.  We do write the $BITMAP attribute if it is present
  * which is the important one for a directory so things are not too bad.
  */
-static int ntfs_dir_fsync(struct file *filp, struct dentry *dentry,
-		int datasync)
+static int ntfs_dir_fsync(struct file *filp, int datasync)
 {
-	struct inode *bmp_vi, *vi = dentry->d_inode;
+	struct inode *bmp_vi, *vi = filp->f_mapping->host;
 	int err, ret;
 	ntfs_attr na;
 
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index a1924a0..113ebd9 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2133,7 +2133,6 @@
 /**
  * ntfs_file_fsync - sync a file to disk
  * @filp:	file to be synced
- * @dentry:	dentry describing the file to sync
  * @datasync:	if non-zero only flush user data and not metadata
  *
  * Data integrity sync of a file to disk.  Used for fsync, fdatasync, and msync
@@ -2149,19 +2148,15 @@
  * Also, if @datasync is true, we do not wait on the inode to be written out
  * but we always wait on the page cache pages to be written out.
  *
- * Note: In the past @filp could be NULL so we ignore it as we don't need it
- * anyway.
- *
  * Locking: Caller must hold i_mutex on the inode.
  *
  * TODO: We should probably also write all attribute/index inodes associated
  * with this inode but since we have no simple way of getting to them we ignore
  * this problem for now.
  */
-static int ntfs_file_fsync(struct file *filp, struct dentry *dentry,
-		int datasync)
+static int ntfs_file_fsync(struct file *filp, int datasync)
 {
-	struct inode *vi = dentry->d_inode;
+	struct inode *vi = filp->f_mapping->host;
 	int err, ret = 0;
 
 	ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 97e54b9..6a13ea6 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -175,13 +175,12 @@
 	return 0;
 }
 
-static int ocfs2_sync_file(struct file *file,
-			   struct dentry *dentry,
-			   int datasync)
+static int ocfs2_sync_file(struct file *file, int datasync)
 {
 	int err = 0;
 	journal_t *journal;
-	struct inode *inode = dentry->d_inode;
+	struct dentry *dentry = file->f_path.dentry;
+	struct inode *inode = file->f_mapping->host;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 
 	mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", file, dentry, datasync,
@@ -1053,7 +1052,7 @@
 	}
 
 	/*
-	 * This will intentionally not wind up calling vmtruncate(),
+	 * This will intentionally not wind up calling simple_setsize(),
 	 * since all the work for a size change has been done above.
 	 * Otherwise, we could get into problems with truncate as
 	 * ip_alloc_sem is used there to protect against i_size
@@ -2119,9 +2118,13 @@
 			 * direct write may have instantiated a few
 			 * blocks outside i_size. Trim these off again.
 			 * Don't need i_size_read because we hold i_mutex.
+			 *
+			 * XXX(hch): this looks buggy because ocfs2 did not
+			 * actually implement ->truncate.  Take a look at
+			 * the new truncate sequence and update this accordingly
 			 */
 			if (*ppos + count > inode->i_size)
-				vmtruncate(inode, inode->i_size);
+				simple_setsize(inode, inode->i_size);
 			ret = written;
 			goto out_dio;
 		}
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 2c26ce2..0eaa929 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -879,13 +879,15 @@
 		if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
 			continue;
 		if (unsuspend)
-			status = vfs_quota_enable(
-					sb_dqopt(sb)->files[type],
-					type, QFMT_OCFS2,
-					DQUOT_SUSPENDED);
-		else
-			status = vfs_quota_disable(sb, type,
-						   DQUOT_SUSPENDED);
+			status = dquot_resume(sb, type);
+		else {
+			struct ocfs2_mem_dqinfo *oinfo;
+
+			/* Cancel periodic syncing before suspending */
+			oinfo = sb_dqinfo(sb, type)->dqi_priv;
+			cancel_delayed_work_sync(&oinfo->dqi_sync_work);
+			status = dquot_suspend(sb, type);
+		}
 		if (status < 0)
 			break;
 	}
@@ -916,8 +918,8 @@
 			status = -ENOENT;
 			goto out_quota_off;
 		}
-		status = vfs_quota_enable(inode[type], type, QFMT_OCFS2,
-						DQUOT_USAGE_ENABLED);
+		status = dquot_enable(inode[type], type, QFMT_OCFS2,
+				      DQUOT_USAGE_ENABLED);
 		if (status < 0)
 			goto out_quota_off;
 	}
@@ -952,8 +954,8 @@
 		/* Turn off quotas. This will remove all dquot structures from
 		 * memory and so they will be automatically synced to global
 		 * quota files */
-		vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED |
-					    DQUOT_LIMITS_ENABLED);
+		dquot_disable(sb, type, DQUOT_USAGE_ENABLED |
+					DQUOT_LIMITS_ENABLED);
 		if (!inode)
 			continue;
 		iput(inode);
@@ -962,7 +964,7 @@
 
 /* Handle quota on quotactl */
 static int ocfs2_quota_on(struct super_block *sb, int type, int format_id,
-			  char *path, int remount)
+			  char *path)
 {
 	unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
 					     OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
@@ -970,30 +972,24 @@
 	if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
 		return -EINVAL;
 
-	if (remount)
-		return 0;	/* Just ignore it has been handled in
-				 * ocfs2_remount() */
-	return vfs_quota_enable(sb_dqopt(sb)->files[type], type,
-				    format_id, DQUOT_LIMITS_ENABLED);
+	return dquot_enable(sb_dqopt(sb)->files[type], type,
+			    format_id, DQUOT_LIMITS_ENABLED);
 }
 
 /* Handle quota off quotactl */
-static int ocfs2_quota_off(struct super_block *sb, int type, int remount)
+static int ocfs2_quota_off(struct super_block *sb, int type)
 {
-	if (remount)
-		return 0;	/* Ignore now and handle later in
-				 * ocfs2_remount() */
-	return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED);
+	return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
 }
 
 static const struct quotactl_ops ocfs2_quotactl_ops = {
 	.quota_on	= ocfs2_quota_on,
 	.quota_off	= ocfs2_quota_off,
-	.quota_sync	= vfs_quota_sync,
-	.get_info	= vfs_get_dqinfo,
-	.set_info	= vfs_set_dqinfo,
-	.get_dqblk	= vfs_get_dqblk,
-	.set_dqblk	= vfs_set_dqblk,
+	.quota_sync	= dquot_quota_sync,
+	.get_info	= dquot_get_dqinfo,
+	.set_info	= dquot_set_dqinfo,
+	.get_dqblk	= dquot_get_dqblk,
+	.set_dqblk	= dquot_set_dqblk,
 };
 
 static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
diff --git a/fs/omfs/file.c b/fs/omfs/file.c
index 399487c..6e7a329 100644
--- a/fs/omfs/file.c
+++ b/fs/omfs/file.c
@@ -329,7 +329,7 @@
 	.aio_read = generic_file_aio_read,
 	.aio_write = generic_file_aio_write,
 	.mmap = generic_file_mmap,
-	.fsync = simple_fsync,
+	.fsync = generic_file_fsync,
 	.splice_read = generic_file_splice_read,
 };
 
diff --git a/fs/pipe.c b/fs/pipe.c
index d79872e..60da077 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1169,14 +1169,18 @@
 
 	switch (cmd) {
 	case F_SETPIPE_SZ:
-		if (!capable(CAP_SYS_ADMIN) && arg > pipe_max_pages)
-			return -EINVAL;
+		if (!capable(CAP_SYS_ADMIN) && arg > pipe_max_pages) {
+			ret = -EINVAL;
+			goto out;
+		}
 		/*
 		 * The pipe needs to be at least 2 pages large to
 		 * guarantee POSIX behaviour.
 		 */
-		if (arg < 2)
-			return -EINVAL;
+		if (arg < 2) {
+			ret = -EINVAL;
+			goto out;
+		}
 		ret = pipe_set_size(pipe, arg);
 		break;
 	case F_GETPIPE_SZ:
@@ -1187,6 +1191,7 @@
 		break;
 	}
 
+out:
 	mutex_unlock(&pipe->inode->i_mutex);
 	return ret;
 }
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 885ab55..9b58d38 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -267,7 +267,7 @@
 		shpending = p->signal->shared_pending.signal;
 		blocked = p->blocked;
 		collect_sigign_sigcatch(p, &ignored, &caught);
-		num_threads = atomic_read(&p->signal->count);
+		num_threads = get_nr_threads(p);
 		rcu_read_lock();  /* FIXME: is this correct? */
 		qsize = atomic_read(&__task_cred(p)->user->sigpending);
 		rcu_read_unlock();
@@ -410,7 +410,7 @@
 			tty_nr = new_encode_dev(tty_devnum(sig->tty));
 		}
 
-		num_threads = atomic_read(&sig->count);
+		num_threads = get_nr_threads(task);
 		collect_sigign_sigcatch(task, &sigign, &sigcatch);
 
 		cmin_flt = sig->cmin_flt;
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c7f9f23..acb7ef8 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -166,18 +166,6 @@
 	return result;
 }
 
-static int get_nr_threads(struct task_struct *tsk)
-{
-	unsigned long flags;
-	int count = 0;
-
-	if (lock_task_sighand(tsk, &flags)) {
-		count = atomic_read(&tsk->signal->count);
-		unlock_task_sighand(tsk, &flags);
-	}
-	return count;
-}
-
 static int proc_cwd_link(struct inode *inode, struct path *path)
 {
 	struct task_struct *task = get_proc_task(inode);
@@ -2444,7 +2432,7 @@
 	const struct pid_entry *p = ptr;
 	struct inode *inode;
 	struct proc_inode *ei;
-	struct dentry *error = ERR_PTR(-EINVAL);
+	struct dentry *error;
 
 	/* Allocate the inode */
 	error = ERR_PTR(-ENOMEM);
@@ -2794,7 +2782,7 @@
 
 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
 {
-	struct dentry *result = ERR_PTR(-ENOENT);
+	struct dentry *result;
 	struct task_struct *task;
 	unsigned tgid;
 	struct pid_namespace *ns;
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 43c1274..2791907 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -343,21 +343,6 @@
 /*
  * Return an inode number between PROC_DYNAMIC_FIRST and
  * 0xffffffff, or zero on failure.
- *
- * Current inode allocations in the proc-fs (hex-numbers):
- *
- * 00000000		reserved
- * 00000001-00000fff	static entries	(goners)
- *      001		root-ino
- *
- * 00001000-00001fff	unused
- * 0001xxxx-7fffxxxx	pid-dir entries for pid 1-7fff
- * 80000000-efffffff	unused
- * f0000000-ffffffff	dynamic entries
- *
- * Goal:
- *	Once we split the thing into several virtual filesystems,
- *	we will get rid of magical ranges (and this comment, BTW).
  */
 static unsigned int get_inode_number(void)
 {
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index c837a77..6f37c39 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -588,7 +588,7 @@
  */
 static void __init proc_kcore_text_init(void)
 {
-	kclist_add(&kcore_text, _stext, _end - _stext, KCORE_TEXT);
+	kclist_add(&kcore_text, _text, _end - _text, KCORE_TEXT);
 }
 #else
 static void __init proc_kcore_text_init(void)
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 757c069..4258384 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -110,7 +110,6 @@
 	if (err)
 		return;
 	proc_mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
-	err = PTR_ERR(proc_mnt);
 	if (IS_ERR(proc_mnt)) {
 		unregister_filesystem(&proc_fs_type);
 		return;
diff --git a/fs/qnx4/dir.c b/fs/qnx4/dir.c
index 6f30c3d..6e8fc62 100644
--- a/fs/qnx4/dir.c
+++ b/fs/qnx4/dir.c
@@ -77,9 +77,10 @@
 
 const struct file_operations qnx4_dir_operations =
 {
+	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= qnx4_readdir,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 };
 
 const struct inode_operations qnx4_dir_inode_operations =
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 655a4c5..12c233d 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -228,10 +228,6 @@
 
 struct dqstats dqstats;
 EXPORT_SYMBOL(dqstats);
-#ifdef CONFIG_SMP
-struct dqstats *dqstats_pcpu;
-EXPORT_SYMBOL(dqstats_pcpu);
-#endif
 
 static qsize_t inode_get_rsv_space(struct inode *inode);
 static void __dquot_initialize(struct inode *inode, int type);
@@ -584,7 +580,7 @@
 }
 EXPORT_SYMBOL(dquot_scan_active);
 
-int vfs_quota_sync(struct super_block *sb, int type, int wait)
+int dquot_quota_sync(struct super_block *sb, int type, int wait)
 {
 	struct list_head *dirty;
 	struct dquot *dquot;
@@ -656,7 +652,7 @@
 
 	return 0;
 }
-EXPORT_SYMBOL(vfs_quota_sync);
+EXPORT_SYMBOL(dquot_quota_sync);
 
 /* Free unused dquots from cache */
 static void prune_dqcache(int count)
@@ -676,27 +672,10 @@
 	}
 }
 
-static int dqstats_read(unsigned int type)
-{
-	int count = 0;
-#ifdef CONFIG_SMP
-	int cpu;
-	for_each_possible_cpu(cpu)
-		count += per_cpu_ptr(dqstats_pcpu, cpu)->stat[type];
-	/* Statistics reading is racy, but absolute accuracy isn't required */
-	if (count < 0)
-		count = 0;
-#else
-	count = dqstats.stat[type];
-#endif
-	return count;
-}
-
 /*
  * This is called from kswapd when we think we need some
  * more memory
  */
-
 static int shrink_dqcache_memory(int nr, gfp_t gfp_mask)
 {
 	if (nr) {
@@ -704,7 +683,9 @@
 		prune_dqcache(nr);
 		spin_unlock(&dq_list_lock);
 	}
-	return (dqstats_read(DQST_FREE_DQUOTS)/100) * sysctl_vfs_cache_pressure;
+	return ((unsigned)
+		percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS])
+		/100) * sysctl_vfs_cache_pressure;
 }
 
 static struct shrinker dqcache_shrinker = {
@@ -1514,11 +1495,13 @@
 /*
  * This operation can block, but only after everything is updated
  */
-int __dquot_alloc_space(struct inode *inode, qsize_t number,
-		int warn, int reserve)
+int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
 {
 	int cnt, ret = 0;
 	char warntype[MAXQUOTAS];
+	int warn = flags & DQUOT_SPACE_WARN;
+	int reserve = flags & DQUOT_SPACE_RESERVE;
+	int nofail = flags & DQUOT_SPACE_NOFAIL;
 
 	/*
 	 * First test before acquiring mutex - solves deadlocks when we
@@ -1539,7 +1522,7 @@
 			continue;
 		ret = check_bdq(inode->i_dquot[cnt], number, !warn,
 				warntype+cnt);
-		if (ret) {
+		if (ret && !nofail) {
 			spin_unlock(&dq_data_lock);
 			goto out_flush_warn;
 		}
@@ -1638,10 +1621,11 @@
 /*
  * This operation can block, but only after everything is updated
  */
-void __dquot_free_space(struct inode *inode, qsize_t number, int reserve)
+void __dquot_free_space(struct inode *inode, qsize_t number, int flags)
 {
 	unsigned int cnt;
 	char warntype[MAXQUOTAS];
+	int reserve = flags & DQUOT_SPACE_RESERVE;
 
 	/* First test before acquiring mutex - solves deadlocks when we
          * re-enter the quota code and are already holding the mutex */
@@ -1812,7 +1796,7 @@
 	if (iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid)
 		transfer_to[USRQUOTA] = dqget(sb, iattr->ia_uid, USRQUOTA);
 	if (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)
-		transfer_to[GRPQUOTA] = dqget(sb, iattr->ia_uid, GRPQUOTA);
+		transfer_to[GRPQUOTA] = dqget(sb, iattr->ia_gid, GRPQUOTA);
 
 	ret = __dquot_transfer(inode, transfer_to);
 	dqput_all(transfer_to);
@@ -1847,6 +1831,7 @@
 	.alloc_dquot	= dquot_alloc,
 	.destroy_dquot	= dquot_destroy,
 };
+EXPORT_SYMBOL(dquot_operations);
 
 /*
  * Generic helper for ->open on filesystems supporting disk quotas.
@@ -1865,7 +1850,7 @@
 /*
  * Turn quota off on a device. type == -1 ==> quotaoff for all types (umount)
  */
-int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags)
+int dquot_disable(struct super_block *sb, int type, unsigned int flags)
 {
 	int cnt, ret = 0;
 	struct quota_info *dqopt = sb_dqopt(sb);
@@ -1995,14 +1980,15 @@
 		}
 	return ret;
 }
-EXPORT_SYMBOL(vfs_quota_disable);
+EXPORT_SYMBOL(dquot_disable);
 
-int vfs_quota_off(struct super_block *sb, int type, int remount)
+int dquot_quota_off(struct super_block *sb, int type)
 {
-	return vfs_quota_disable(sb, type, remount ? DQUOT_SUSPENDED :
-				 (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED));
+	return dquot_disable(sb, type,
+			     DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
 }
-EXPORT_SYMBOL(vfs_quota_off);
+EXPORT_SYMBOL(dquot_quota_off);
+
 /*
  *	Turn quotas on on a device
  */
@@ -2120,36 +2106,43 @@
 }
 
 /* Reenable quotas on remount RW */
-static int vfs_quota_on_remount(struct super_block *sb, int type)
+int dquot_resume(struct super_block *sb, int type)
 {
 	struct quota_info *dqopt = sb_dqopt(sb);
 	struct inode *inode;
-	int ret;
+	int ret = 0, cnt;
 	unsigned int flags;
 
-	mutex_lock(&dqopt->dqonoff_mutex);
-	if (!sb_has_quota_suspended(sb, type)) {
-		mutex_unlock(&dqopt->dqonoff_mutex);
-		return 0;
-	}
-	inode = dqopt->files[type];
-	dqopt->files[type] = NULL;
-	spin_lock(&dq_state_lock);
-	flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
-						DQUOT_LIMITS_ENABLED, type);
-	dqopt->flags &= ~dquot_state_flag(DQUOT_STATE_FLAGS, type);
-	spin_unlock(&dq_state_lock);
-	mutex_unlock(&dqopt->dqonoff_mutex);
+	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+		if (type != -1 && cnt != type)
+			continue;
 
-	flags = dquot_generic_flag(flags, type);
-	ret = vfs_load_quota_inode(inode, type, dqopt->info[type].dqi_fmt_id,
-				   flags);
-	iput(inode);
+		mutex_lock(&dqopt->dqonoff_mutex);
+		if (!sb_has_quota_suspended(sb, cnt)) {
+			mutex_unlock(&dqopt->dqonoff_mutex);
+			continue;
+		}
+		inode = dqopt->files[cnt];
+		dqopt->files[cnt] = NULL;
+		spin_lock(&dq_state_lock);
+		flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
+							DQUOT_LIMITS_ENABLED,
+							cnt);
+		dqopt->flags &= ~dquot_state_flag(DQUOT_STATE_FLAGS, cnt);
+		spin_unlock(&dq_state_lock);
+		mutex_unlock(&dqopt->dqonoff_mutex);
+
+		flags = dquot_generic_flag(flags, cnt);
+		ret = vfs_load_quota_inode(inode, cnt,
+				dqopt->info[cnt].dqi_fmt_id, flags);
+		iput(inode);
+	}
 
 	return ret;
 }
+EXPORT_SYMBOL(dquot_resume);
 
-int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
+int dquot_quota_on_path(struct super_block *sb, int type, int format_id,
 		      struct path *path)
 {
 	int error = security_quota_on(path->dentry);
@@ -2164,40 +2157,36 @@
 					     DQUOT_LIMITS_ENABLED);
 	return error;
 }
-EXPORT_SYMBOL(vfs_quota_on_path);
+EXPORT_SYMBOL(dquot_quota_on_path);
 
-int vfs_quota_on(struct super_block *sb, int type, int format_id, char *name,
-		 int remount)
+int dquot_quota_on(struct super_block *sb, int type, int format_id, char *name)
 {
 	struct path path;
 	int error;
 
-	if (remount)
-		return vfs_quota_on_remount(sb, type);
-
 	error = kern_path(name, LOOKUP_FOLLOW, &path);
 	if (!error) {
-		error = vfs_quota_on_path(sb, type, format_id, &path);
+		error = dquot_quota_on_path(sb, type, format_id, &path);
 		path_put(&path);
 	}
 	return error;
 }
-EXPORT_SYMBOL(vfs_quota_on);
+EXPORT_SYMBOL(dquot_quota_on);
 
 /*
  * More powerful function for turning on quotas allowing setting
  * of individual quota flags
  */
-int vfs_quota_enable(struct inode *inode, int type, int format_id,
-		unsigned int flags)
+int dquot_enable(struct inode *inode, int type, int format_id,
+		 unsigned int flags)
 {
 	int ret = 0;
 	struct super_block *sb = inode->i_sb;
 	struct quota_info *dqopt = sb_dqopt(sb);
 
 	/* Just unsuspend quotas? */
-	if (flags & DQUOT_SUSPENDED)
-		return vfs_quota_on_remount(sb, type);
+	BUG_ON(flags & DQUOT_SUSPENDED);
+
 	if (!flags)
 		return 0;
 	/* Just updating flags needed? */
@@ -2229,13 +2218,13 @@
 load_quota:
 	return vfs_load_quota_inode(inode, type, format_id, flags);
 }
-EXPORT_SYMBOL(vfs_quota_enable);
+EXPORT_SYMBOL(dquot_enable);
 
 /*
  * This function is used when filesystem needs to initialize quotas
  * during mount time.
  */
-int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
+int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
 		int format_id, int type)
 {
 	struct dentry *dentry;
@@ -2261,24 +2250,7 @@
 	dput(dentry);
 	return error;
 }
-EXPORT_SYMBOL(vfs_quota_on_mount);
-
-/* Wrapper to turn on quotas when remounting rw */
-int vfs_dq_quota_on_remount(struct super_block *sb)
-{
-	int cnt;
-	int ret = 0, err;
-
-	if (!sb->s_qcop || !sb->s_qcop->quota_on)
-		return -ENOSYS;
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		err = sb->s_qcop->quota_on(sb, cnt, 0, NULL, 1);
-		if (err < 0 && !ret)
-			ret = err;
-	}
-	return ret;
-}
-EXPORT_SYMBOL(vfs_dq_quota_on_remount);
+EXPORT_SYMBOL(dquot_quota_on_mount);
 
 static inline qsize_t qbtos(qsize_t blocks)
 {
@@ -2313,8 +2285,8 @@
 	spin_unlock(&dq_data_lock);
 }
 
-int vfs_get_dqblk(struct super_block *sb, int type, qid_t id,
-		  struct fs_disk_quota *di)
+int dquot_get_dqblk(struct super_block *sb, int type, qid_t id,
+		    struct fs_disk_quota *di)
 {
 	struct dquot *dquot;
 
@@ -2326,7 +2298,7 @@
 
 	return 0;
 }
-EXPORT_SYMBOL(vfs_get_dqblk);
+EXPORT_SYMBOL(dquot_get_dqblk);
 
 #define VFS_FS_DQ_MASK \
 	(FS_DQ_BCOUNT | FS_DQ_BSOFT | FS_DQ_BHARD | \
@@ -2425,7 +2397,7 @@
 	return 0;
 }
 
-int vfs_set_dqblk(struct super_block *sb, int type, qid_t id,
+int dquot_set_dqblk(struct super_block *sb, int type, qid_t id,
 		  struct fs_disk_quota *di)
 {
 	struct dquot *dquot;
@@ -2441,10 +2413,10 @@
 out:
 	return rc;
 }
-EXPORT_SYMBOL(vfs_set_dqblk);
+EXPORT_SYMBOL(dquot_set_dqblk);
 
 /* Generic routine for getting common part of quota file information */
-int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
+int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
 {
 	struct mem_dqinfo *mi;
   
@@ -2463,10 +2435,10 @@
 	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
 	return 0;
 }
-EXPORT_SYMBOL(vfs_get_dqinfo);
+EXPORT_SYMBOL(dquot_get_dqinfo);
 
 /* Generic routine for setting common part of quota file information */
-int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
+int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
 {
 	struct mem_dqinfo *mi;
 	int err = 0;
@@ -2493,27 +2465,27 @@
 	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
 	return err;
 }
-EXPORT_SYMBOL(vfs_set_dqinfo);
+EXPORT_SYMBOL(dquot_set_dqinfo);
 
-const struct quotactl_ops vfs_quotactl_ops = {
-	.quota_on	= vfs_quota_on,
-	.quota_off	= vfs_quota_off,
-	.quota_sync	= vfs_quota_sync,
-	.get_info	= vfs_get_dqinfo,
-	.set_info	= vfs_set_dqinfo,
-	.get_dqblk	= vfs_get_dqblk,
-	.set_dqblk	= vfs_set_dqblk
+const struct quotactl_ops dquot_quotactl_ops = {
+	.quota_on	= dquot_quota_on,
+	.quota_off	= dquot_quota_off,
+	.quota_sync	= dquot_quota_sync,
+	.get_info	= dquot_get_dqinfo,
+	.set_info	= dquot_set_dqinfo,
+	.get_dqblk	= dquot_get_dqblk,
+	.set_dqblk	= dquot_set_dqblk
 };
-
+EXPORT_SYMBOL(dquot_quotactl_ops);
 
 static int do_proc_dqstats(struct ctl_table *table, int write,
 		     void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-#ifdef CONFIG_SMP
-	/* Update global table */
 	unsigned int type = (int *)table->data - dqstats.stat;
-	dqstats.stat[type] = dqstats_read(type);
-#endif
+
+	/* Update global table */
+	dqstats.stat[type] =
+			percpu_counter_sum_positive(&dqstats.counter[type]);
 	return proc_dointvec(table, write, buffer, lenp, ppos);
 }
 
@@ -2606,7 +2578,7 @@
 
 static int __init dquot_init(void)
 {
-	int i;
+	int i, ret;
 	unsigned long nr_hash, order;
 
 	printk(KERN_NOTICE "VFS: Disk quotas %s\n", __DQUOT_VERSION__);
@@ -2624,12 +2596,11 @@
 	if (!dquot_hash)
 		panic("Cannot create dquot hash table");
 
-#ifdef CONFIG_SMP
-	dqstats_pcpu = alloc_percpu(struct dqstats);
-	if (!dqstats_pcpu)
-		panic("Cannot create dquot stats table");
-#endif
-	memset(&dqstats, 0, sizeof(struct dqstats));
+	for (i = 0; i < _DQST_DQSTAT_LAST; i++) {
+		ret = percpu_counter_init(&dqstats.counter[i], 0);
+		if (ret)
+			panic("Cannot create dquot stat counters");
+	}
 
 	/* Find power-of-two hlist_heads which can fit into allocation */
 	nr_hash = (1UL << order) * PAGE_SIZE / sizeof(struct hlist_head);
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index ce3dfd0..b299961 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -73,7 +73,7 @@
 	if (IS_ERR(pathname))
 		return PTR_ERR(pathname);
 	if (sb->s_qcop->quota_on)
-		ret = sb->s_qcop->quota_on(sb, type, id, pathname, 0);
+		ret = sb->s_qcop->quota_on(sb, type, id, pathname);
 	putname(pathname);
 	return ret;
 }
@@ -260,7 +260,7 @@
 	case Q_QUOTAOFF:
 		if (!sb->s_qcop->quota_off)
 			return -ENOSYS;
-		return sb->s_qcop->quota_off(sb, type, 0);
+		return sb->s_qcop->quota_off(sb, type);
 	case Q_GETFMT:
 		return quota_getfmt(sb, type, addr);
 	case Q_GETINFO:
diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index 78f613c..4884ac5 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -43,12 +43,13 @@
 	.write		= do_sync_write,
 	.aio_write	= generic_file_aio_write,
 	.mmap		= generic_file_mmap,
-	.fsync		= simple_sync_file,
+	.fsync		= noop_fsync,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= generic_file_splice_write,
 	.llseek		= generic_file_llseek,
 };
 
 const struct inode_operations ramfs_file_inode_operations = {
+	.setattr	= simple_setattr,
 	.getattr	= simple_getattr,
 };
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index 5ea4ad8..d532c20 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -42,7 +42,7 @@
 	.aio_read		= generic_file_aio_read,
 	.write			= do_sync_write,
 	.aio_write		= generic_file_aio_write,
-	.fsync			= simple_sync_file,
+	.fsync			= noop_fsync,
 	.splice_read		= generic_file_splice_read,
 	.splice_write		= generic_file_splice_write,
 	.llseek			= generic_file_llseek,
@@ -146,7 +146,7 @@
 			return ret;
 	}
 
-	ret = vmtruncate(inode, newsize);
+	ret = simple_setsize(inode, newsize);
 
 	return ret;
 }
@@ -169,7 +169,8 @@
 
 	/* pick out size-changing events */
 	if (ia->ia_valid & ATTR_SIZE) {
-		loff_t size = i_size_read(inode);
+		loff_t size = inode->i_size;
+
 		if (ia->ia_size != size) {
 			ret = ramfs_nommu_resize(inode, ia->ia_size, size);
 			if (ret < 0 || ia->ia_valid == ATTR_SIZE)
@@ -182,7 +183,7 @@
 		}
 	}
 
-	ret = inode_setattr(inode, ia);
+	generic_setattr(inode, ia);
  out:
 	ia->ia_valid = old_ia_valid;
 	return ret;
diff --git a/fs/read_write.c b/fs/read_write.c
index 113386d..9c04852 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -97,6 +97,23 @@
 }
 EXPORT_SYMBOL(generic_file_llseek);
 
+/**
+ * noop_llseek - No Operation Performed llseek implementation
+ * @file:	file structure to seek on
+ * @offset:	file offset to seek to
+ * @origin:	type of seek
+ *
+ * This is an implementation of ->llseek useable for the rare special case when
+ * userspace expects the seek to succeed but the (device) file is actually not
+ * able to perform the seek. In this case you use noop_llseek() instead of
+ * falling back to the default implementation of ->llseek.
+ */
+loff_t noop_llseek(struct file *file, loff_t offset, int origin)
+{
+	return file->f_pos;
+}
+EXPORT_SYMBOL(noop_llseek);
+
 loff_t no_llseek(struct file *file, loff_t offset, int origin)
 {
 	return -ESPIPE;
diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c
index 0793044..198dabf 100644
--- a/fs/reiserfs/dir.c
+++ b/fs/reiserfs/dir.c
@@ -14,10 +14,10 @@
 extern const struct reiserfs_key MIN_KEY;
 
 static int reiserfs_readdir(struct file *, void *, filldir_t);
-static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
-			      int datasync);
+static int reiserfs_dir_fsync(struct file *filp, int datasync);
 
 const struct file_operations reiserfs_dir_operations = {
+	.llseek = generic_file_llseek,
 	.read = generic_read_dir,
 	.readdir = reiserfs_readdir,
 	.fsync = reiserfs_dir_fsync,
@@ -27,10 +27,9 @@
 #endif
 };
 
-static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
-			      int datasync)
+static int reiserfs_dir_fsync(struct file *filp, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = filp->f_mapping->host;
 	int err;
 	reiserfs_write_lock(inode->i_sb);
 	err = reiserfs_commit_for_inode(inode);
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 9977df9..b82cdd8 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -134,10 +134,9 @@
  * be removed...
  */
 
-static int reiserfs_sync_file(struct file *filp,
-			      struct dentry *dentry, int datasync)
+static int reiserfs_sync_file(struct file *filp, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = filp->f_mapping->host;
 	int err;
 	int barrier_done;
 
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 59125fb..9822fa1 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -158,6 +158,7 @@
 #ifdef CONFIG_QUOTA
 	int i;
 	int ms_active_set;
+	int quota_enabled[MAXQUOTAS];
 #endif
 
 	/* compose key to look for "save" links */
@@ -179,8 +180,15 @@
 	}
 	/* Turn on quotas so that they are updated correctly */
 	for (i = 0; i < MAXQUOTAS; i++) {
+		quota_enabled[i] = 1;
 		if (REISERFS_SB(s)->s_qf_names[i]) {
-			int ret = reiserfs_quota_on_mount(s, i);
+			int ret;
+
+			if (sb_has_quota_active(s, i)) {
+				quota_enabled[i] = 0;
+				continue;
+			}
+			ret = reiserfs_quota_on_mount(s, i);
 			if (ret < 0)
 				reiserfs_warning(s, "reiserfs-2500",
 						 "cannot turn on journaled "
@@ -304,8 +312,8 @@
 #ifdef CONFIG_QUOTA
 	/* Turn quotas off */
 	for (i = 0; i < MAXQUOTAS; i++) {
-		if (sb_dqopt(s)->files[i])
-			vfs_quota_off(s, i, 0);
+		if (sb_dqopt(s)->files[i] && quota_enabled[i])
+			dquot_quota_off(s, i);
 	}
 	if (ms_active_set)
 		/* Restore the flag back */
@@ -466,6 +474,8 @@
 	struct reiserfs_transaction_handle th;
 	th.t_trans_id = 0;
 
+	dquot_disable(s, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+
 	reiserfs_write_lock(s);
 
 	if (s->s_dirt)
@@ -620,7 +630,7 @@
 static int reiserfs_release_dquot(struct dquot *);
 static int reiserfs_mark_dquot_dirty(struct dquot *);
 static int reiserfs_write_info(struct super_block *, int);
-static int reiserfs_quota_on(struct super_block *, int, int, char *, int);
+static int reiserfs_quota_on(struct super_block *, int, int, char *);
 
 static const struct dquot_operations reiserfs_quota_operations = {
 	.write_dquot = reiserfs_write_dquot,
@@ -634,12 +644,12 @@
 
 static const struct quotactl_ops reiserfs_qctl_operations = {
 	.quota_on = reiserfs_quota_on,
-	.quota_off = vfs_quota_off,
-	.quota_sync = vfs_quota_sync,
-	.get_info = vfs_get_dqinfo,
-	.set_info = vfs_set_dqinfo,
-	.get_dqblk = vfs_get_dqblk,
-	.set_dqblk = vfs_set_dqblk,
+	.quota_off = dquot_quota_off,
+	.quota_sync = dquot_quota_sync,
+	.get_info = dquot_get_dqinfo,
+	.set_info = dquot_set_dqinfo,
+	.get_dqblk = dquot_get_dqblk,
+	.set_dqblk = dquot_set_dqblk,
 };
 #endif
 
@@ -1242,6 +1252,11 @@
 		if (s->s_flags & MS_RDONLY)
 			/* it is read-only already */
 			goto out_ok;
+
+		err = dquot_suspend(s, -1);
+		if (err < 0)
+			goto out_err;
+
 		/* try to remount file system with read-only permissions */
 		if (sb_umount_state(rs) == REISERFS_VALID_FS
 		    || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
@@ -1295,6 +1310,7 @@
 	s->s_dirt = 0;
 
 	if (!(*mount_flags & MS_RDONLY)) {
+		dquot_resume(s, -1);
 		finish_unfinished(s);
 		reiserfs_xattr_init(s, *mount_flags);
 	}
@@ -2022,15 +2038,15 @@
  */
 static int reiserfs_quota_on_mount(struct super_block *sb, int type)
 {
-	return vfs_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type],
-				  REISERFS_SB(sb)->s_jquota_fmt, type);
+	return dquot_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type],
+					REISERFS_SB(sb)->s_jquota_fmt, type);
 }
 
 /*
  * Standard function to be called on quota_on
  */
 static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
-			     char *name, int remount)
+			     char *name)
 {
 	int err;
 	struct path path;
@@ -2039,9 +2055,7 @@
 
 	if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA)))
 		return -EINVAL;
-	/* No more checks needed? Path and format_id are bogus anyway... */
-	if (remount)
-		return vfs_quota_on(sb, type, format_id, name, 1);
+
 	err = kern_path(name, LOOKUP_FOLLOW, &path);
 	if (err)
 		return err;
@@ -2085,7 +2099,7 @@
 		if (err)
 			goto out;
 	}
-	err = vfs_quota_on_path(sb, type, format_id, &path);
+	err = dquot_quota_on_path(sb, type, format_id, &path);
 out:
 	path_put(&path);
 	return err;
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
index 6c97842..00a70ca 100644
--- a/fs/smbfs/dir.c
+++ b/fs/smbfs/dir.c
@@ -37,6 +37,7 @@
 
 const struct file_operations smb_dir_operations =
 {
+	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= smb_readdir,
 	.unlocked_ioctl	= smb_ioctl,
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index 84ecf0e..8e187a0 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -28,8 +28,9 @@
 #include "proto.h"
 
 static int
-smb_fsync(struct file *file, struct dentry * dentry, int datasync)
+smb_fsync(struct file *file, int datasync)
 {
+	struct dentry *dentry = file->f_path.dentry;
 	struct smb_sb_info *server = server_from_dentry(dentry);
 	int result;
 
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index dfa1d67..9551cb6 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -714,7 +714,7 @@
 		error = server->ops->truncate(inode, attr->ia_size);
 		if (error)
 			goto out;
-		error = vmtruncate(inode, attr->ia_size);
+		error = simple_setsize(inode, attr->ia_size);
 		if (error)
 			goto out;
 		refresh = 1;
diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig
index 25a00d1..cc6ce8a 100644
--- a/fs/squashfs/Kconfig
+++ b/fs/squashfs/Kconfig
@@ -26,6 +26,17 @@
 
 	  If unsure, say N.
 
+config SQUASHFS_XATTRS
+	bool "Squashfs XATTR support"
+	depends on SQUASHFS
+	default n
+	help
+	  Saying Y here includes support for extended attributes (xattrs).
+	  Xattrs are name:value pairs associated with inodes by
+	  the kernel or by users (see the attr(5) manual page).
+
+	  If unsure, say N.
+
 config SQUASHFS_EMBEDDED
 
 	bool "Additional option for memory-constrained systems" 
diff --git a/fs/squashfs/Makefile b/fs/squashfs/Makefile
index df8a19e..2cee3e9 100644
--- a/fs/squashfs/Makefile
+++ b/fs/squashfs/Makefile
@@ -5,3 +5,5 @@
 obj-$(CONFIG_SQUASHFS) += squashfs.o
 squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o
 squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o
+squashfs-$(CONFIG_SQUASHFS_XATTRS) += xattr.o xattr_id.o
+
diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c
index 49daaf6..62e63ad 100644
--- a/fs/squashfs/inode.c
+++ b/fs/squashfs/inode.c
@@ -40,11 +40,13 @@
 
 #include <linux/fs.h>
 #include <linux/vfs.h>
+#include <linux/xattr.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
 #include "squashfs_fs_i.h"
 #include "squashfs.h"
+#include "xattr.h"
 
 /*
  * Initialise VFS inode with the base inode information common to all
@@ -111,6 +113,7 @@
 	int err, type, offset = SQUASHFS_INODE_OFFSET(ino);
 	union squashfs_inode squashfs_ino;
 	struct squashfs_base_inode *sqshb_ino = &squashfs_ino.base;
+	int xattr_id = SQUASHFS_INVALID_XATTR;
 
 	TRACE("Entered squashfs_read_inode\n");
 
@@ -199,8 +202,10 @@
 			frag_offset = 0;
 		}
 
+		xattr_id = le32_to_cpu(sqsh_ino->xattr);
 		inode->i_nlink = le32_to_cpu(sqsh_ino->nlink);
 		inode->i_size = le64_to_cpu(sqsh_ino->file_size);
+		inode->i_op = &squashfs_inode_ops;
 		inode->i_fop = &generic_ro_fops;
 		inode->i_mode |= S_IFREG;
 		inode->i_blocks = ((inode->i_size -
@@ -251,6 +256,7 @@
 		if (err < 0)
 			goto failed_read;
 
+		xattr_id = le32_to_cpu(sqsh_ino->xattr);
 		inode->i_nlink = le32_to_cpu(sqsh_ino->nlink);
 		inode->i_size = le32_to_cpu(sqsh_ino->file_size);
 		inode->i_op = &squashfs_dir_inode_ops;
@@ -280,21 +286,33 @@
 
 		inode->i_nlink = le32_to_cpu(sqsh_ino->nlink);
 		inode->i_size = le32_to_cpu(sqsh_ino->symlink_size);
-		inode->i_op = &page_symlink_inode_operations;
+		inode->i_op = &squashfs_symlink_inode_ops;
 		inode->i_data.a_ops = &squashfs_symlink_aops;
 		inode->i_mode |= S_IFLNK;
 		squashfs_i(inode)->start = block;
 		squashfs_i(inode)->offset = offset;
 
+		if (type == SQUASHFS_LSYMLINK_TYPE) {
+			__le32 xattr;
+
+			err = squashfs_read_metadata(sb, NULL, &block,
+						&offset, inode->i_size);
+			if (err < 0)
+				goto failed_read;
+			err = squashfs_read_metadata(sb, &xattr, &block,
+						&offset, sizeof(xattr));
+			if (err < 0)
+				goto failed_read;
+			xattr_id = le32_to_cpu(xattr);
+		}
+
 		TRACE("Symbolic link inode %x:%x, start_block %llx, offset "
 				"%x\n", SQUASHFS_INODE_BLK(ino), offset,
 				block, offset);
 		break;
 	}
 	case SQUASHFS_BLKDEV_TYPE:
-	case SQUASHFS_CHRDEV_TYPE:
-	case SQUASHFS_LBLKDEV_TYPE:
-	case SQUASHFS_LCHRDEV_TYPE: {
+	case SQUASHFS_CHRDEV_TYPE: {
 		struct squashfs_dev_inode *sqsh_ino = &squashfs_ino.dev;
 		unsigned int rdev;
 
@@ -315,10 +333,32 @@
 				SQUASHFS_INODE_BLK(ino), offset, rdev);
 		break;
 	}
+	case SQUASHFS_LBLKDEV_TYPE:
+	case SQUASHFS_LCHRDEV_TYPE: {
+		struct squashfs_ldev_inode *sqsh_ino = &squashfs_ino.ldev;
+		unsigned int rdev;
+
+		err = squashfs_read_metadata(sb, sqsh_ino, &block, &offset,
+				sizeof(*sqsh_ino));
+		if (err < 0)
+			goto failed_read;
+
+		if (type == SQUASHFS_LCHRDEV_TYPE)
+			inode->i_mode |= S_IFCHR;
+		else
+			inode->i_mode |= S_IFBLK;
+		xattr_id = le32_to_cpu(sqsh_ino->xattr);
+		inode->i_op = &squashfs_inode_ops;
+		inode->i_nlink = le32_to_cpu(sqsh_ino->nlink);
+		rdev = le32_to_cpu(sqsh_ino->rdev);
+		init_special_inode(inode, inode->i_mode, new_decode_dev(rdev));
+
+		TRACE("Device inode %x:%x, rdev %x\n",
+				SQUASHFS_INODE_BLK(ino), offset, rdev);
+		break;
+	}
 	case SQUASHFS_FIFO_TYPE:
-	case SQUASHFS_SOCKET_TYPE:
-	case SQUASHFS_LFIFO_TYPE:
-	case SQUASHFS_LSOCKET_TYPE: {
+	case SQUASHFS_SOCKET_TYPE: {
 		struct squashfs_ipc_inode *sqsh_ino = &squashfs_ino.ipc;
 
 		err = squashfs_read_metadata(sb, sqsh_ino, &block, &offset,
@@ -334,14 +374,52 @@
 		init_special_inode(inode, inode->i_mode, 0);
 		break;
 	}
+	case SQUASHFS_LFIFO_TYPE:
+	case SQUASHFS_LSOCKET_TYPE: {
+		struct squashfs_lipc_inode *sqsh_ino = &squashfs_ino.lipc;
+
+		err = squashfs_read_metadata(sb, sqsh_ino, &block, &offset,
+				sizeof(*sqsh_ino));
+		if (err < 0)
+			goto failed_read;
+
+		if (type == SQUASHFS_LFIFO_TYPE)
+			inode->i_mode |= S_IFIFO;
+		else
+			inode->i_mode |= S_IFSOCK;
+		xattr_id = le32_to_cpu(sqsh_ino->xattr);
+		inode->i_op = &squashfs_inode_ops;
+		inode->i_nlink = le32_to_cpu(sqsh_ino->nlink);
+		init_special_inode(inode, inode->i_mode, 0);
+		break;
+	}
 	default:
 		ERROR("Unknown inode type %d in squashfs_iget!\n", type);
 		return -EINVAL;
 	}
 
+	if (xattr_id != SQUASHFS_INVALID_XATTR && msblk->xattr_id_table) {
+		err = squashfs_xattr_lookup(sb, xattr_id,
+					&squashfs_i(inode)->xattr_count,
+					&squashfs_i(inode)->xattr_size,
+					&squashfs_i(inode)->xattr);
+		if (err < 0)
+			goto failed_read;
+		inode->i_blocks += ((squashfs_i(inode)->xattr_size - 1) >> 9)
+				+ 1;
+	} else
+		squashfs_i(inode)->xattr_count = 0;
+
 	return 0;
 
 failed_read:
 	ERROR("Unable to read inode 0x%llx\n", ino);
 	return err;
 }
+
+
+const struct inode_operations squashfs_inode_ops = {
+	.getxattr = generic_getxattr,
+	.listxattr = squashfs_listxattr
+};
+
diff --git a/fs/squashfs/namei.c b/fs/squashfs/namei.c
index 5266bd8..7a9464d 100644
--- a/fs/squashfs/namei.c
+++ b/fs/squashfs/namei.c
@@ -57,11 +57,13 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/dcache.h>
+#include <linux/xattr.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
 #include "squashfs_fs_i.h"
 #include "squashfs.h"
+#include "xattr.h"
 
 /*
  * Lookup name in the directory index, returning the location of the metadata
@@ -237,5 +239,7 @@
 
 
 const struct inode_operations squashfs_dir_inode_ops = {
-	.lookup = squashfs_lookup
+	.lookup = squashfs_lookup,
+	.getxattr = generic_getxattr,
+	.listxattr = squashfs_listxattr
 };
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index fe2587a..733a17c 100644
--- a/fs/squashfs/squashfs.h
+++ b/fs/squashfs/squashfs.h
@@ -73,8 +73,11 @@
 				unsigned int);
 extern int squashfs_read_inode(struct inode *, long long);
 
+/* xattr.c */
+extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);
+
 /*
- * Inodes, files and decompressor operations
+ * Inodes, files,  decompressor and xattr operations
  */
 
 /* dir.c */
@@ -86,11 +89,18 @@
 /* file.c */
 extern const struct address_space_operations squashfs_aops;
 
+/* inode.c */
+extern const struct inode_operations squashfs_inode_ops;
+
 /* namei.c */
 extern const struct inode_operations squashfs_dir_inode_ops;
 
 /* symlink.c */
 extern const struct address_space_operations squashfs_symlink_aops;
+extern const struct inode_operations squashfs_symlink_inode_ops;
+
+/* xattr.c */
+extern const struct xattr_handler *squashfs_xattr_handlers[];
 
 /* zlib_wrapper.c */
 extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h
index 7902424..8eabb80 100644
--- a/fs/squashfs/squashfs_fs.h
+++ b/fs/squashfs/squashfs_fs.h
@@ -46,6 +46,7 @@
 #define SQUASHFS_NAME_LEN		256
 
 #define SQUASHFS_INVALID_FRAG		(0xffffffffU)
+#define SQUASHFS_INVALID_XATTR		(0xffffffffU)
 #define SQUASHFS_INVALID_BLK		(-1LL)
 
 /* Filesystem flags */
@@ -96,6 +97,13 @@
 #define SQUASHFS_LFIFO_TYPE		13
 #define SQUASHFS_LSOCKET_TYPE		14
 
+/* Xattr types */
+#define SQUASHFS_XATTR_USER             0
+#define SQUASHFS_XATTR_TRUSTED          1
+#define SQUASHFS_XATTR_SECURITY         2
+#define SQUASHFS_XATTR_VALUE_OOL        256
+#define SQUASHFS_XATTR_PREFIX_MASK      0xff
+
 /* Flag whether block is compressed or uncompressed, bit is set if block is
  * uncompressed */
 #define SQUASHFS_COMPRESSED_BIT		(1 << 15)
@@ -174,6 +182,24 @@
 
 #define SQUASHFS_ID_BLOCK_BYTES(A)	(SQUASHFS_ID_BLOCKS(A) *\
 					sizeof(u64))
+/* xattr id lookup table defines */
+#define SQUASHFS_XATTR_BYTES(A)		((A) * sizeof(struct squashfs_xattr_id))
+
+#define SQUASHFS_XATTR_BLOCK(A)		(SQUASHFS_XATTR_BYTES(A) / \
+					SQUASHFS_METADATA_SIZE)
+
+#define SQUASHFS_XATTR_BLOCK_OFFSET(A)	(SQUASHFS_XATTR_BYTES(A) % \
+					SQUASHFS_METADATA_SIZE)
+
+#define SQUASHFS_XATTR_BLOCKS(A)	((SQUASHFS_XATTR_BYTES(A) + \
+					SQUASHFS_METADATA_SIZE - 1) / \
+					SQUASHFS_METADATA_SIZE)
+
+#define SQUASHFS_XATTR_BLOCK_BYTES(A)	(SQUASHFS_XATTR_BLOCKS(A) *\
+					sizeof(u64))
+#define SQUASHFS_XATTR_BLK(A)		((unsigned int) ((A) >> 16))
+
+#define SQUASHFS_XATTR_OFFSET(A)	((unsigned int) ((A) & 0xffff))
 
 /* cached data constants for filesystem */
 #define SQUASHFS_CACHED_BLKS		8
@@ -228,7 +254,7 @@
 	__le64			root_inode;
 	__le64			bytes_used;
 	__le64			id_table_start;
-	__le64			xattr_table_start;
+	__le64			xattr_id_table_start;
 	__le64			inode_table_start;
 	__le64			directory_table_start;
 	__le64			fragment_table_start;
@@ -261,6 +287,17 @@
 	__le32			nlink;
 };
 
+struct squashfs_lipc_inode {
+	__le16			inode_type;
+	__le16			mode;
+	__le16			uid;
+	__le16			guid;
+	__le32			mtime;
+	__le32	 		inode_number;
+	__le32			nlink;
+	__le32			xattr;
+};
+
 struct squashfs_dev_inode {
 	__le16			inode_type;
 	__le16			mode;
@@ -272,6 +309,18 @@
 	__le32			rdev;
 };
 
+struct squashfs_ldev_inode {
+	__le16			inode_type;
+	__le16			mode;
+	__le16			uid;
+	__le16			guid;
+	__le32			mtime;
+	__le32	 		inode_number;
+	__le32			nlink;
+	__le32			rdev;
+	__le32			xattr;
+};
+
 struct squashfs_symlink_inode {
 	__le16			inode_type;
 	__le16			mode;
@@ -349,12 +398,14 @@
 union squashfs_inode {
 	struct squashfs_base_inode		base;
 	struct squashfs_dev_inode		dev;
+	struct squashfs_ldev_inode		ldev;
 	struct squashfs_symlink_inode		symlink;
 	struct squashfs_reg_inode		reg;
 	struct squashfs_lreg_inode		lreg;
 	struct squashfs_dir_inode		dir;
 	struct squashfs_ldir_inode		ldir;
 	struct squashfs_ipc_inode		ipc;
+	struct squashfs_lipc_inode		lipc;
 };
 
 struct squashfs_dir_entry {
@@ -377,4 +428,27 @@
 	unsigned int		unused;
 };
 
+struct squashfs_xattr_entry {
+	__le16			type;
+	__le16			size;
+	char			data[0];
+};
+
+struct squashfs_xattr_val {
+	__le32			vsize;
+	char			value[0];
+};
+
+struct squashfs_xattr_id {
+	__le64			xattr;
+	__le32			count;
+	__le32			size;
+};
+
+struct squashfs_xattr_id_table {
+	__le64			xattr_table_start;
+	__le32			xattr_ids;
+	__le32			unused;
+};
+
 #endif
diff --git a/fs/squashfs/squashfs_fs_i.h b/fs/squashfs/squashfs_fs_i.h
index fbfca30..d3e3a37 100644
--- a/fs/squashfs/squashfs_fs_i.h
+++ b/fs/squashfs/squashfs_fs_i.h
@@ -26,6 +26,9 @@
 struct squashfs_inode_info {
 	u64		start;
 	int		offset;
+	u64		xattr;
+	unsigned int	xattr_size;
+	int		xattr_count;
 	union {
 		struct {
 			u64		fragment_block;
diff --git a/fs/squashfs/squashfs_fs_sb.h b/fs/squashfs/squashfs_fs_sb.h
index 2e77dc5..d9037a5 100644
--- a/fs/squashfs/squashfs_fs_sb.h
+++ b/fs/squashfs/squashfs_fs_sb.h
@@ -61,6 +61,7 @@
 	int					next_meta_index;
 	__le64					*id_table;
 	__le64					*fragment_index;
+	__le64					*xattr_id_table;
 	struct mutex				read_data_mutex;
 	struct mutex				meta_index_mutex;
 	struct meta_index			*meta_index;
@@ -68,9 +69,11 @@
 	__le64					*inode_lookup_table;
 	u64					inode_table;
 	u64					directory_table;
+	u64					xattr_table;
 	unsigned int				block_size;
 	unsigned short				block_log;
 	long long				bytes_used;
 	unsigned int				inodes;
+	int					xattr_ids;
 };
 #endif
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 48b6f4a..88b4f86 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -36,12 +36,14 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/magic.h>
+#include <linux/xattr.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
 #include "squashfs_fs_i.h"
 #include "squashfs.h"
 #include "decompressor.h"
+#include "xattr.h"
 
 static struct file_system_type squashfs_fs_type;
 static const struct super_operations squashfs_super_ops;
@@ -82,7 +84,7 @@
 	long long root_inode;
 	unsigned short flags;
 	unsigned int fragments;
-	u64 lookup_table_start;
+	u64 lookup_table_start, xattr_id_table_start;
 	int err;
 
 	TRACE("Entered squashfs_fill_superblock\n");
@@ -139,13 +141,6 @@
 	if (msblk->decompressor == NULL)
 		goto failed_mount;
 
-	/*
-	 * Check if there's xattrs in the filesystem.  These are not
-	 * supported in this version, so warn that they will be ignored.
-	 */
-	if (le64_to_cpu(sblk->xattr_table_start) != SQUASHFS_INVALID_BLK)
-		ERROR("Xattrs in filesystem, these will be ignored\n");
-
 	/* Check the filesystem does not extend beyond the end of the
 	   block device */
 	msblk->bytes_used = le64_to_cpu(sblk->bytes_used);
@@ -253,7 +248,7 @@
 allocate_lookup_table:
 	lookup_table_start = le64_to_cpu(sblk->lookup_table_start);
 	if (lookup_table_start == SQUASHFS_INVALID_BLK)
-		goto allocate_root;
+		goto allocate_xattr_table;
 
 	/* Allocate and read inode lookup table */
 	msblk->inode_lookup_table = squashfs_read_inode_lookup_table(sb,
@@ -266,6 +261,21 @@
 
 	sb->s_export_op = &squashfs_export_ops;
 
+allocate_xattr_table:
+	sb->s_xattr = squashfs_xattr_handlers;
+	xattr_id_table_start = le64_to_cpu(sblk->xattr_id_table_start);
+	if (xattr_id_table_start == SQUASHFS_INVALID_BLK)
+		goto allocate_root;
+
+	/* Allocate and read xattr id lookup table */
+	msblk->xattr_id_table = squashfs_read_xattr_id_table(sb,
+		xattr_id_table_start, &msblk->xattr_table, &msblk->xattr_ids);
+	if (IS_ERR(msblk->xattr_id_table)) {
+		err = PTR_ERR(msblk->xattr_id_table);
+		msblk->xattr_id_table = NULL;
+		if (err != -ENOTSUPP)
+			goto failed_mount;
+	}
 allocate_root:
 	root = new_inode(sb);
 	if (!root) {
@@ -301,6 +311,7 @@
 	kfree(msblk->inode_lookup_table);
 	kfree(msblk->fragment_index);
 	kfree(msblk->id_table);
+	kfree(msblk->xattr_id_table);
 	kfree(sb->s_fs_info);
 	sb->s_fs_info = NULL;
 	kfree(sblk);
@@ -355,6 +366,7 @@
 		kfree(sbi->fragment_index);
 		kfree(sbi->meta_index);
 		kfree(sbi->inode_lookup_table);
+		kfree(sbi->xattr_id_table);
 		kfree(sb->s_fs_info);
 		sb->s_fs_info = NULL;
 	}
diff --git a/fs/squashfs/symlink.c b/fs/squashfs/symlink.c
index 32b911f..ec86434 100644
--- a/fs/squashfs/symlink.c
+++ b/fs/squashfs/symlink.c
@@ -35,11 +35,13 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/pagemap.h>
+#include <linux/xattr.h>
 
 #include "squashfs_fs.h"
 #include "squashfs_fs_sb.h"
 #include "squashfs_fs_i.h"
 #include "squashfs.h"
+#include "xattr.h"
 
 static int squashfs_symlink_readpage(struct file *file, struct page *page)
 {
@@ -114,3 +116,12 @@
 const struct address_space_operations squashfs_symlink_aops = {
 	.readpage = squashfs_symlink_readpage
 };
+
+const struct inode_operations squashfs_symlink_inode_ops = {
+	.readlink = generic_readlink,
+	.follow_link = page_follow_link_light,
+	.put_link = page_put_link,
+	.getxattr = generic_getxattr,
+	.listxattr = squashfs_listxattr
+};
+
diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
new file mode 100644
index 0000000..c7655e8
--- /dev/null
+++ b/fs/squashfs/xattr.c
@@ -0,0 +1,323 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2010
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * xattr_id.c
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/vfs.h>
+#include <linux/xattr.h>
+#include <linux/slab.h>
+
+#include "squashfs_fs.h"
+#include "squashfs_fs_sb.h"
+#include "squashfs_fs_i.h"
+#include "squashfs.h"
+
+static const struct xattr_handler *squashfs_xattr_handler(int);
+
+ssize_t squashfs_listxattr(struct dentry *d, char *buffer,
+	size_t buffer_size)
+{
+	struct inode *inode = d->d_inode;
+	struct super_block *sb = inode->i_sb;
+	struct squashfs_sb_info *msblk = sb->s_fs_info;
+	u64 start = SQUASHFS_XATTR_BLK(squashfs_i(inode)->xattr)
+						 + msblk->xattr_table;
+	int offset = SQUASHFS_XATTR_OFFSET(squashfs_i(inode)->xattr);
+	int count = squashfs_i(inode)->xattr_count;
+	size_t rest = buffer_size;
+	int err;
+
+	/* check that the file system has xattrs */
+	if (msblk->xattr_id_table == NULL)
+		return -EOPNOTSUPP;
+
+	/* loop reading each xattr name */
+	while (count--) {
+		struct squashfs_xattr_entry entry;
+		struct squashfs_xattr_val val;
+		const struct xattr_handler *handler;
+		int name_size, prefix_size = 0;
+
+		err = squashfs_read_metadata(sb, &entry, &start, &offset,
+							sizeof(entry));
+		if (err < 0)
+			goto failed;
+
+		name_size = le16_to_cpu(entry.size);
+		handler = squashfs_xattr_handler(le16_to_cpu(entry.type));
+		if (handler)
+			prefix_size = handler->list(d, buffer, rest, NULL,
+				name_size, handler->flags);
+		if (prefix_size) {
+			if (buffer) {
+				if (prefix_size + name_size + 1 > rest) {
+					err = -ERANGE;
+					goto failed;
+				}
+				buffer += prefix_size;
+			}
+			err = squashfs_read_metadata(sb, buffer, &start,
+				&offset, name_size);
+			if (err < 0)
+				goto failed;
+			if (buffer) {
+				buffer[name_size] = '\0';
+				buffer += name_size + 1;
+			}
+			rest -= prefix_size + name_size + 1;
+		} else  {
+			/* no handler or insuffficient privileges, so skip */
+			err = squashfs_read_metadata(sb, NULL, &start,
+				&offset, name_size);
+			if (err < 0)
+				goto failed;
+		}
+
+
+		/* skip remaining xattr entry */
+		err = squashfs_read_metadata(sb, &val, &start, &offset,
+						sizeof(val));
+		if (err < 0)
+			goto failed;
+
+		err = squashfs_read_metadata(sb, NULL, &start, &offset,
+						le32_to_cpu(val.vsize));
+		if (err < 0)
+			goto failed;
+	}
+	err = buffer_size - rest;
+
+failed:
+	return err;
+}
+
+
+static int squashfs_xattr_get(struct inode *inode, int name_index,
+	const char *name, void *buffer, size_t buffer_size)
+{
+	struct super_block *sb = inode->i_sb;
+	struct squashfs_sb_info *msblk = sb->s_fs_info;
+	u64 start = SQUASHFS_XATTR_BLK(squashfs_i(inode)->xattr)
+						 + msblk->xattr_table;
+	int offset = SQUASHFS_XATTR_OFFSET(squashfs_i(inode)->xattr);
+	int count = squashfs_i(inode)->xattr_count;
+	int name_len = strlen(name);
+	int err, vsize;
+	char *target = kmalloc(name_len, GFP_KERNEL);
+
+	if (target == NULL)
+		return  -ENOMEM;
+
+	/* loop reading each xattr name */
+	for (; count; count--) {
+		struct squashfs_xattr_entry entry;
+		struct squashfs_xattr_val val;
+		int type, prefix, name_size;
+
+		err = squashfs_read_metadata(sb, &entry, &start, &offset,
+							sizeof(entry));
+		if (err < 0)
+			goto failed;
+
+		name_size = le16_to_cpu(entry.size);
+		type = le16_to_cpu(entry.type);
+		prefix = type & SQUASHFS_XATTR_PREFIX_MASK;
+
+		if (prefix == name_index && name_size == name_len)
+			err = squashfs_read_metadata(sb, target, &start,
+						&offset, name_size);
+		else
+			err = squashfs_read_metadata(sb, NULL, &start,
+						&offset, name_size);
+		if (err < 0)
+			goto failed;
+
+		if (prefix == name_index && name_size == name_len &&
+					strncmp(target, name, name_size) == 0) {
+			/* found xattr */
+			if (type & SQUASHFS_XATTR_VALUE_OOL) {
+				__le64 xattr;
+				/* val is a reference to the real location */
+				err = squashfs_read_metadata(sb, &val, &start,
+						&offset, sizeof(val));
+				if (err < 0)
+					goto failed;
+				err = squashfs_read_metadata(sb, &xattr, &start,
+					 &offset, sizeof(xattr));
+				if (err < 0)
+					goto failed;
+				xattr = le64_to_cpu(xattr);
+				start = SQUASHFS_XATTR_BLK(xattr) +
+							msblk->xattr_table;
+				offset = SQUASHFS_XATTR_OFFSET(xattr);
+			}
+			/* read xattr value */
+			err = squashfs_read_metadata(sb, &val, &start, &offset,
+							sizeof(val));
+			if (err < 0)
+				goto failed;
+
+			vsize = le32_to_cpu(val.vsize);
+			if (buffer) {
+				if (vsize > buffer_size) {
+					err = -ERANGE;
+					goto failed;
+				}
+				err = squashfs_read_metadata(sb, buffer, &start,
+					 &offset, vsize);
+				if (err < 0)
+					goto failed;
+			}
+			break;
+		}
+
+		/* no match, skip remaining xattr entry */
+		err = squashfs_read_metadata(sb, &val, &start, &offset,
+							sizeof(val));
+		if (err < 0)
+			goto failed;
+		err = squashfs_read_metadata(sb, NULL, &start, &offset,
+						le32_to_cpu(val.vsize));
+		if (err < 0)
+			goto failed;
+	}
+	err = count ? vsize : -ENODATA;
+
+failed:
+	kfree(target);
+	return err;
+}
+
+
+/*
+ * User namespace support
+ */
+static size_t squashfs_user_list(struct dentry *d, char *list, size_t list_size,
+	const char *name, size_t name_len, int type)
+{
+	if (list && XATTR_USER_PREFIX_LEN <= list_size)
+		memcpy(list, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
+	return XATTR_USER_PREFIX_LEN;
+}
+
+static int squashfs_user_get(struct dentry *d, const char *name, void *buffer,
+	size_t size, int type)
+{
+	if (name[0] == '\0')
+		return  -EINVAL;
+
+	return squashfs_xattr_get(d->d_inode, SQUASHFS_XATTR_USER, name,
+		buffer, size);
+}
+
+static const struct xattr_handler squashfs_xattr_user_handler = {
+	.prefix	= XATTR_USER_PREFIX,
+	.list	= squashfs_user_list,
+	.get	= squashfs_user_get
+};
+
+/*
+ * Trusted namespace support
+ */
+static size_t squashfs_trusted_list(struct dentry *d, char *list,
+	size_t list_size, const char *name, size_t name_len, int type)
+{
+	if (!capable(CAP_SYS_ADMIN))
+		return 0;
+
+	if (list && XATTR_TRUSTED_PREFIX_LEN <= list_size)
+		memcpy(list, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
+	return XATTR_TRUSTED_PREFIX_LEN;
+}
+
+static int squashfs_trusted_get(struct dentry *d, const char *name,
+	void *buffer, size_t size, int type)
+{
+	if (name[0] == '\0')
+		return  -EINVAL;
+
+	return squashfs_xattr_get(d->d_inode, SQUASHFS_XATTR_TRUSTED, name,
+		buffer, size);
+}
+
+static const struct xattr_handler squashfs_xattr_trusted_handler = {
+	.prefix	= XATTR_TRUSTED_PREFIX,
+	.list	= squashfs_trusted_list,
+	.get	= squashfs_trusted_get
+};
+
+/*
+ * Security namespace support
+ */
+static size_t squashfs_security_list(struct dentry *d, char *list,
+	size_t list_size, const char *name, size_t name_len, int type)
+{
+	if (list && XATTR_SECURITY_PREFIX_LEN <= list_size)
+		memcpy(list, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN);
+	return XATTR_SECURITY_PREFIX_LEN;
+}
+
+static int squashfs_security_get(struct dentry *d, const char *name,
+	void *buffer, size_t size, int type)
+{
+	if (name[0] == '\0')
+		return  -EINVAL;
+
+	return squashfs_xattr_get(d->d_inode, SQUASHFS_XATTR_SECURITY, name,
+		buffer, size);
+}
+
+static const struct xattr_handler squashfs_xattr_security_handler = {
+	.prefix	= XATTR_SECURITY_PREFIX,
+	.list	= squashfs_security_list,
+	.get	= squashfs_security_get
+};
+
+static inline const struct xattr_handler *squashfs_xattr_handler(int type)
+{
+	if (type & ~(SQUASHFS_XATTR_PREFIX_MASK | SQUASHFS_XATTR_VALUE_OOL))
+		/* ignore unrecognised type */
+		return NULL;
+
+	switch (type & SQUASHFS_XATTR_PREFIX_MASK) {
+	case SQUASHFS_XATTR_USER:
+		return &squashfs_xattr_user_handler;
+	case SQUASHFS_XATTR_TRUSTED:
+		return &squashfs_xattr_trusted_handler;
+	case SQUASHFS_XATTR_SECURITY:
+		return &squashfs_xattr_security_handler;
+	default:
+		/* ignore unrecognised type */
+		return NULL;
+	}
+}
+
+const struct xattr_handler *squashfs_xattr_handlers[] = {
+	&squashfs_xattr_user_handler,
+	&squashfs_xattr_trusted_handler,
+	&squashfs_xattr_security_handler,
+	NULL
+};
+
diff --git a/fs/squashfs/xattr.h b/fs/squashfs/xattr.h
new file mode 100644
index 0000000..9da071a
--- /dev/null
+++ b/fs/squashfs/xattr.h
@@ -0,0 +1,46 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2010
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * xattr.h
+ */
+
+#ifdef CONFIG_SQUASHFS_XATTRS
+extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64,
+		u64 *, int *);
+extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
+		int *, unsigned long long *);
+#else
+static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb,
+		u64 start, u64 *xattr_table_start, int *xattr_ids)
+{
+	ERROR("Xattrs in filesystem, these will be ignored\n");
+	return ERR_PTR(-ENOTSUPP);
+}
+
+static inline int squashfs_xattr_lookup(struct super_block *sb,
+		unsigned int index, int *count, int *size,
+		unsigned long long *xattr)
+{
+	return 0;
+}
+#define squashfs_listxattr NULL
+#define generic_getxattr NULL
+#define squashfs_xattr_handlers NULL
+#endif
diff --git a/fs/squashfs/xattr_id.c b/fs/squashfs/xattr_id.c
new file mode 100644
index 0000000..cfb4110
--- /dev/null
+++ b/fs/squashfs/xattr_id.c
@@ -0,0 +1,100 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2010
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * xattr_id.c
+ */
+
+/*
+ * This file implements code to map the 32-bit xattr id stored in the inode
+ * into the on disk location of the xattr data.
+ */
+
+#include <linux/fs.h>
+#include <linux/vfs.h>
+#include <linux/slab.h>
+
+#include "squashfs_fs.h"
+#include "squashfs_fs_sb.h"
+#include "squashfs_fs_i.h"
+#include "squashfs.h"
+
+/*
+ * Map xattr id using the xattr id look up table
+ */
+int squashfs_xattr_lookup(struct super_block *sb, unsigned int index,
+		int *count, unsigned int *size, unsigned long long *xattr)
+{
+	struct squashfs_sb_info *msblk = sb->s_fs_info;
+	int block = SQUASHFS_XATTR_BLOCK(index);
+	int offset = SQUASHFS_XATTR_BLOCK_OFFSET(index);
+	u64 start_block = le64_to_cpu(msblk->xattr_id_table[block]);
+	struct squashfs_xattr_id id;
+	int err;
+
+	err = squashfs_read_metadata(sb, &id, &start_block, &offset,
+							sizeof(id));
+	if (err < 0)
+		return err;
+
+	*xattr = le64_to_cpu(id.xattr);
+	*size = le32_to_cpu(id.size);
+	*count = le32_to_cpu(id.count);
+	return 0;
+}
+
+
+/*
+ * Read uncompressed xattr id lookup table indexes from disk into memory
+ */
+__le64 *squashfs_read_xattr_id_table(struct super_block *sb, u64 start,
+		u64 *xattr_table_start, int *xattr_ids)
+{
+	unsigned int len;
+	__le64 *xid_table;
+	struct squashfs_xattr_id_table id_table;
+	int err;
+
+	err = squashfs_read_table(sb, &id_table, start, sizeof(id_table));
+	if (err < 0) {
+		ERROR("unable to read xattr id table\n");
+		return ERR_PTR(err);
+	}
+	*xattr_table_start = le64_to_cpu(id_table.xattr_table_start);
+	*xattr_ids = le32_to_cpu(id_table.xattr_ids);
+	len = SQUASHFS_XATTR_BLOCK_BYTES(*xattr_ids);
+
+	TRACE("In read_xattr_index_table, length %d\n", len);
+
+	/* Allocate xattr id lookup table indexes */
+	xid_table = kmalloc(len, GFP_KERNEL);
+	if (xid_table == NULL) {
+		ERROR("Failed to allocate xattr id index table\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	err = squashfs_read_table(sb, xid_table, start + sizeof(id_table), len);
+	if (err < 0) {
+		ERROR("unable to read xattr id index table\n");
+		kfree(xid_table);
+		return ERR_PTR(err);
+	}
+
+	return xid_table;
+}
diff --git a/fs/super.c b/fs/super.c
index 69688b1..5c35bc7 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -24,7 +24,6 @@
 #include <linux/slab.h>
 #include <linux/acct.h>
 #include <linux/blkdev.h>
-#include <linux/quotaops.h>
 #include <linux/mount.h>
 #include <linux/security.h>
 #include <linux/writeback.h>		/* for the emergency remount stuff */
@@ -94,8 +93,6 @@
 		init_rwsem(&s->s_dquot.dqptr_sem);
 		init_waitqueue_head(&s->s_wait_unfrozen);
 		s->s_maxbytes = MAX_NON_LFS;
-		s->dq_op = sb_dquot_ops;
-		s->s_qcop = sb_quotactl_ops;
 		s->s_op = &default_op;
 		s->s_time_gran = 1000000000;
 	}
@@ -160,7 +157,6 @@
 {
 	struct file_system_type *fs = s->s_type;
 	if (atomic_dec_and_test(&s->s_active)) {
-		vfs_dq_off(s, 0);
 		fs->kill_sb(s);
 		put_filesystem(fs);
 		put_super(s);
@@ -524,7 +520,7 @@
 int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
 {
 	int retval;
-	int remount_rw, remount_ro;
+	int remount_ro;
 
 	if (sb->s_frozen != SB_UNFROZEN)
 		return -EBUSY;
@@ -540,7 +536,6 @@
 	sync_filesystem(sb);
 
 	remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
-	remount_rw = !(flags & MS_RDONLY) && (sb->s_flags & MS_RDONLY);
 
 	/* If we are remounting RDONLY and current sb is read/write,
 	   make sure there are no rw files opened */
@@ -549,9 +544,6 @@
 			mark_files_ro(sb);
 		else if (!fs_may_remount_ro(sb))
 			return -EBUSY;
-		retval = vfs_dq_off(sb, 1);
-		if (retval < 0 && retval != -ENOSYS)
-			return -EBUSY;
 	}
 
 	if (sb->s_op->remount_fs) {
@@ -560,8 +552,7 @@
 			return retval;
 	}
 	sb->s_flags = (sb->s_flags & ~MS_RMT_MASK) | (flags & MS_RMT_MASK);
-	if (remount_rw)
-		vfs_dq_quota_on_remount(sb);
+
 	/*
 	 * Some filesystems modify their metadata via some other path than the
 	 * bdev buffer cache (eg. use a private mapping, or directories in
@@ -946,8 +937,8 @@
 EXPORT_SYMBOL_GPL(vfs_kern_mount);
 
 /**
- * freeze_super -- lock the filesystem and force it into a consistent state
- * @super: the super to lock
+ * freeze_super - lock the filesystem and force it into a consistent state
+ * @sb: the super to lock
  *
  * Syncs the super to make sure the filesystem is consistent and calls the fs's
  * freeze_fs.  Subsequent calls to this without first thawing the fs will return
diff --git a/fs/sync.c b/fs/sync.c
index e8cbd41..c9f83f4 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -130,12 +130,10 @@
 
 /*
  * Generic function to fsync a file.
- *
- * filp may be NULL if called via the msync of a vma.
  */
-int file_fsync(struct file *filp, struct dentry *dentry, int datasync)
+int file_fsync(struct file *filp, int datasync)
 {
-	struct inode * inode = dentry->d_inode;
+	struct inode *inode = filp->f_mapping->host;
 	struct super_block * sb;
 	int ret, err;
 
@@ -183,7 +181,7 @@
 	 * livelocks in fsync_buffers_list().
 	 */
 	mutex_lock(&mapping->host->i_mutex);
-	err = file->f_op->fsync(file, file->f_path.dentry, datasync);
+	err = file->f_op->fsync(file, datasync);
 	if (!ret)
 		ret = err;
 	mutex_unlock(&mapping->host->i_mutex);
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index bbd77e9..bde1a4c 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -117,13 +117,11 @@
 	if (error)
 		goto out;
 
-	iattr->ia_valid &= ~ATTR_SIZE; /* ignore size changes */
-
-	error = inode_setattr(inode, iattr);
-	if (error)
-		goto out;
+	/* this ignores size changes */
+	generic_setattr(inode, iattr);
 
 	error = sysfs_sd_setattr(sd, iattr);
+
 out:
 	mutex_unlock(&sysfs_mutex);
 	return error;
diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c
index 1dabed2..79941e4 100644
--- a/fs/sysv/dir.c
+++ b/fs/sysv/dir.c
@@ -24,7 +24,7 @@
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= sysv_readdir,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 };
 
 static inline void dir_put_page(struct page *page)
diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 96340c0..750cc22 100644
--- a/fs/sysv/file.c
+++ b/fs/sysv/file.c
@@ -26,7 +26,7 @@
 	.write		= do_sync_write,
 	.aio_write	= generic_file_aio_write,
 	.mmap		= generic_file_mmap,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 	.splice_read	= generic_file_splice_read,
 };
 
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index 4573734..d4a5380 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -43,6 +43,7 @@
 	 * then attach current time stamp.
 	 * But if the filesystem was marked clean, keep it clean.
 	 */
+	sb->s_dirt = 0;
 	old_time = fs32_to_cpu(sbi, *sbi->s_sb_time);
 	if (sbi->s_type == FSTYPE_SYSV4) {
 		if (*sbi->s_sb_state == cpu_to_fs32(sbi, 0x7c269d38 - old_time))
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 5692cf7..12f445c 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -967,12 +967,15 @@
  * the page locked, and it locks @ui_mutex. However, write-back does take inode
  * @i_mutex, which means other VFS operations may be run on this inode at the
  * same time. And the problematic one is truncation to smaller size, from where
- * we have to call 'vmtruncate()', which first changes @inode->i_size, then
+ * we have to call 'simple_setsize()', which first changes @inode->i_size, then
  * drops the truncated pages. And while dropping the pages, it takes the page
- * lock. This means that 'do_truncation()' cannot call 'vmtruncate()' with
+ * lock. This means that 'do_truncation()' cannot call 'simple_setsize()' with
  * @ui_mutex locked, because it would deadlock with 'ubifs_writepage()'. This
  * means that @inode->i_size is changed while @ui_mutex is unlocked.
  *
+ * XXX: with the new truncate the above is not true anymore, the simple_setsize
+ * calls can be replaced with the individual components.
+ *
  * But in 'ubifs_writepage()' we have to guarantee that we do not write beyond
  * inode size. How do we do this if @inode->i_size may became smaller while we
  * are in the middle of 'ubifs_writepage()'? The UBIFS solution is the
@@ -1125,7 +1128,7 @@
 		budgeted = 0;
 	}
 
-	err = vmtruncate(inode, new_size);
+	err = simple_setsize(inode, new_size);
 	if (err)
 		goto out_budg;
 
@@ -1214,7 +1217,7 @@
 
 	if (attr->ia_valid & ATTR_SIZE) {
 		dbg_gen("size %lld -> %lld", inode->i_size, new_size);
-		err = vmtruncate(inode, new_size);
+		err = simple_setsize(inode, new_size);
 		if (err)
 			goto out;
 	}
@@ -1223,7 +1226,7 @@
 	if (attr->ia_valid & ATTR_SIZE) {
 		/* Truncation changes inode [mc]time */
 		inode->i_mtime = inode->i_ctime = ubifs_current_time(inode);
-		/* 'vmtruncate()' changed @i_size, update @ui_size */
+		/* 'simple_setsize()' changed @i_size, update @ui_size */
 		ui->ui_size = inode->i_size;
 	}
 
@@ -1304,9 +1307,9 @@
 	return NULL;
 }
 
-int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync)
+int ubifs_fsync(struct file *file, int datasync)
 {
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = file->f_mapping->host;
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
 	int err;
 
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index bd2542d..2eef553 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -379,7 +379,7 @@
  * The @ui_size is a "shadow" variable for @inode->i_size and UBIFS uses
  * @ui_size instead of @inode->i_size. The reason for this is that UBIFS cannot
  * make sure @inode->i_size is always changed under @ui_mutex, because it
- * cannot call 'vmtruncate()' with @ui_mutex locked, because it would deadlock
+ * cannot call 'simple_setsize()' with @ui_mutex locked, because it would deadlock
  * with 'ubifs_writepage()' (see file.c). All the other inode fields are
  * changed under @ui_mutex, so they do not need "shadow" fields. Note, one
  * could consider to rework locking and base it on "shadow" fields.
@@ -1678,7 +1678,7 @@
 int ubifs_calc_dark(const struct ubifs_info *c, int spc);
 
 /* file.c */
-int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync);
+int ubifs_fsync(struct file *file, int datasync);
 int ubifs_setattr(struct dentry *dentry, struct iattr *attr);
 
 /* dir.c */
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 9a9378b..b608efa 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -21,7 +21,6 @@
 
 #include "udfdecl.h"
 
-#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/bitops.h>
 
@@ -159,8 +158,6 @@
 				udf_debug("byte=%2x\n",
 					((char *)bh->b_data)[(bit + i) >> 3]);
 			} else {
-				if (inode)
-					dquot_free_block(inode, 1);
 				udf_add_free_space(sb, sbi->s_partition, 1);
 			}
 		}
@@ -210,15 +207,8 @@
 		bit = block % (sb->s_blocksize << 3);
 
 		while (bit < (sb->s_blocksize << 3) && block_count > 0) {
-			if (!udf_test_bit(bit, bh->b_data))
+			if (!udf_clear_bit(bit, bh->b_data))
 				goto out;
-			else if (dquot_prealloc_block(inode, 1))
-				goto out;
-			else if (!udf_clear_bit(bit, bh->b_data)) {
-				udf_debug("bit already cleared for block %d\n", bit);
-				dquot_free_block(inode, 1);
-				goto out;
-			}
 			block_count--;
 			alloc_count++;
 			bit++;
@@ -338,20 +328,6 @@
 	}
 
 got_block:
-
-	/*
-	 * Check quota for allocation of this block.
-	 */
-	if (inode) {
-		int ret = dquot_alloc_block(inode, 1);
-
-		if (ret) {
-			mutex_unlock(&sbi->s_alloc_mutex);
-			*err = ret;
-			return 0;
-		}
-	}
-
 	newblock = bit + (block_group << (sb->s_blocksize_bits + 3)) -
 		(sizeof(struct spaceBitmapDesc) << 3);
 
@@ -401,10 +377,6 @@
 	}
 
 	iinfo = UDF_I(table);
-	/* We do this up front - There are some error conditions that
-	   could occure, but.. oh well */
-	if (inode)
-		dquot_free_block(inode, count);
 	udf_add_free_space(sb, sbi->s_partition, count);
 
 	start = bloc->logicalBlockNum + offset;
@@ -649,10 +621,7 @@
 		epos.offset -= adsize;
 
 		alloc_count = (elen >> sb->s_blocksize_bits);
-		if (inode && dquot_prealloc_block(inode,
-			alloc_count > block_count ? block_count : alloc_count))
-			alloc_count = 0;
-		else if (alloc_count > block_count) {
+		if (alloc_count > block_count) {
 			alloc_count = block_count;
 			eloc.logicalBlockNum += alloc_count;
 			elen -= (alloc_count << sb->s_blocksize_bits);
@@ -752,14 +721,6 @@
 	newblock = goal_eloc.logicalBlockNum;
 	goal_eloc.logicalBlockNum++;
 	goal_elen -= sb->s_blocksize;
-	if (inode) {
-		*err = dquot_alloc_block(inode, 1);
-		if (*err) {
-			brelse(goal_epos.bh);
-			mutex_unlock(&sbi->s_alloc_mutex);
-			return 0;
-		}
-	}
 
 	if (goal_elen)
 		udf_write_aext(table, &goal_epos, &goal_eloc, goal_elen, 1);
diff --git a/fs/udf/dir.c b/fs/udf/dir.c
index 3a84455..51552bf 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -207,8 +207,9 @@
 
 /* readdir and lookup functions */
 const struct file_operations udf_dir_operations = {
+	.llseek			= generic_file_llseek,
 	.read			= generic_read_dir,
 	.readdir		= udf_readdir,
 	.unlocked_ioctl		= udf_ioctl,
-	.fsync			= simple_fsync,
+	.fsync			= generic_file_fsync,
 };
diff --git a/fs/udf/file.c b/fs/udf/file.c
index baae3a7..94e06d6 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -34,7 +34,6 @@
 #include <linux/errno.h>
 #include <linux/smp_lock.h>
 #include <linux/pagemap.h>
-#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/aio.h>
 #include <linux/smp_lock.h>
@@ -219,39 +218,16 @@
 	.read			= do_sync_read,
 	.aio_read		= generic_file_aio_read,
 	.unlocked_ioctl		= udf_ioctl,
-	.open			= dquot_file_open,
+	.open			= generic_file_open,
 	.mmap			= generic_file_mmap,
 	.write			= do_sync_write,
 	.aio_write		= udf_file_aio_write,
 	.release		= udf_release_file,
-	.fsync			= simple_fsync,
+	.fsync			= generic_file_fsync,
 	.splice_read		= generic_file_splice_read,
 	.llseek			= generic_file_llseek,
 };
 
-int udf_setattr(struct dentry *dentry, struct iattr *iattr)
-{
-	struct inode *inode = dentry->d_inode;
-	int error;
-
-	error = inode_change_ok(inode, iattr);
-	if (error)
-		return error;
-
-	if (is_quota_modification(inode, iattr))
-		dquot_initialize(inode);
-
-	if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
-            (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
-		error = dquot_transfer(inode, iattr);
-		if (error)
-			return error;
-	}
-
-	return inode_setattr(inode, iattr);
-}
-
 const struct inode_operations udf_file_inode_operations = {
 	.truncate		= udf_truncate,
-	.setattr		= udf_setattr,
 };
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index 2b5586c..18cd711 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -20,7 +20,6 @@
 
 #include "udfdecl.h"
 #include <linux/fs.h>
-#include <linux/quotaops.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 
@@ -32,13 +31,6 @@
 	struct super_block *sb = inode->i_sb;
 	struct udf_sb_info *sbi = UDF_SB(sb);
 
-	/*
-	 * Note: we must free any quota before locking the superblock,
-	 * as writing the quota to disk may need the lock as well.
-	 */
-	dquot_free_inode(inode);
-	dquot_drop(inode);
-
 	clear_inode(inode);
 
 	mutex_lock(&sbi->s_alloc_mutex);
@@ -61,7 +53,7 @@
 	struct super_block *sb = dir->i_sb;
 	struct udf_sb_info *sbi = UDF_SB(sb);
 	struct inode *inode;
-	int block, ret;
+	int block;
 	uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
 	struct udf_inode_info *iinfo;
 	struct udf_inode_info *dinfo = UDF_I(dir);
@@ -146,17 +138,6 @@
 	insert_inode_hash(inode);
 	mark_inode_dirty(inode);
 
-	dquot_initialize(inode);
-	ret = dquot_alloc_inode(inode);
-	if (ret) {
-		dquot_drop(inode);
-		inode->i_flags |= S_NOQUOTA;
-		inode->i_nlink = 0;
-		iput(inode);
-		*err = ret;
-		return NULL;
-	}
-
 	*err = 0;
 	return inode;
 }
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 8a3fbd1..124852b 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -36,7 +36,6 @@
 #include <linux/pagemap.h>
 #include <linux/buffer_head.h>
 #include <linux/writeback.h>
-#include <linux/quotaops.h>
 #include <linux/slab.h>
 #include <linux/crc-itu-t.h>
 
@@ -71,9 +70,6 @@
 
 void udf_delete_inode(struct inode *inode)
 {
-	if (!is_bad_inode(inode))
-		dquot_initialize(inode);
-
 	truncate_inode_pages(&inode->i_data, 0);
 
 	if (is_bad_inode(inode))
@@ -113,7 +109,6 @@
 			(unsigned long long)iinfo->i_lenExtents);
 	}
 
-	dquot_drop(inode);
 	kfree(iinfo->i_ext.i_data);
 	iinfo->i_ext.i_data = NULL;
 }
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 585f733..bf5fc67 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -27,7 +27,6 @@
 #include <linux/errno.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
-#include <linux/quotaops.h>
 #include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
 #include <linux/sched.h>
@@ -563,8 +562,6 @@
 	int err;
 	struct udf_inode_info *iinfo;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	inode = udf_new_inode(dir, mode, &err);
 	if (!inode) {
@@ -617,8 +614,6 @@
 	if (!old_valid_dev(rdev))
 		return -EINVAL;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	err = -EIO;
 	inode = udf_new_inode(dir, mode, &err);
@@ -664,8 +659,6 @@
 	struct udf_inode_info *dinfo = UDF_I(dir);
 	struct udf_inode_info *iinfo;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	err = -EMLINK;
 	if (dir->i_nlink >= (256 << sizeof(dir->i_nlink)) - 1)
@@ -800,8 +793,6 @@
 	struct fileIdentDesc *fi, cfi;
 	struct kernel_lb_addr tloc;
 
-	dquot_initialize(dir);
-
 	retval = -ENOENT;
 	lock_kernel();
 	fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
@@ -848,8 +839,6 @@
 	struct fileIdentDesc cfi;
 	struct kernel_lb_addr tloc;
 
-	dquot_initialize(dir);
-
 	retval = -ENOENT;
 	lock_kernel();
 	fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
@@ -904,8 +893,6 @@
 	struct buffer_head *bh;
 	struct udf_inode_info *iinfo;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	inode = udf_new_inode(dir, S_IFLNK | S_IRWXUGO, &err);
 	if (!inode)
@@ -1075,8 +1062,6 @@
 	int err;
 	struct buffer_head *bh;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	if (inode->i_nlink >= (256 << sizeof(inode->i_nlink)) - 1) {
 		unlock_kernel();
@@ -1139,9 +1124,6 @@
 	struct kernel_lb_addr tloc;
 	struct udf_inode_info *old_iinfo = UDF_I(old_inode);
 
-	dquot_initialize(old_dir);
-	dquot_initialize(new_dir);
-
 	lock_kernel();
 	ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
 	if (ofi) {
@@ -1387,7 +1369,6 @@
 const struct inode_operations udf_dir_inode_operations = {
 	.lookup				= udf_lookup,
 	.create				= udf_create,
-	.setattr			= udf_setattr,
 	.link				= udf_link,
 	.unlink				= udf_unlink,
 	.symlink			= udf_symlink,
@@ -1400,5 +1381,4 @@
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
-	.setattr	= udf_setattr,
 };
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 1e4543c..612d1e2 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -557,6 +557,7 @@
 {
 	struct udf_options uopt;
 	struct udf_sb_info *sbi = UDF_SB(sb);
+	int error = 0;
 
 	uopt.flags = sbi->s_flags;
 	uopt.uid   = sbi->s_uid;
@@ -582,17 +583,17 @@
 			*flags |= MS_RDONLY;
 	}
 
-	if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
-		unlock_kernel();
-		return 0;
-	}
+	if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
+		goto out_unlock;
+
 	if (*flags & MS_RDONLY)
 		udf_close_lvid(sb);
 	else
 		udf_open_lvid(sb);
 
+out_unlock:
 	unlock_kernel();
-	return 0;
+	return error;
 }
 
 /* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
@@ -1939,7 +1940,7 @@
 	/* Fill in the rest of the superblock */
 	sb->s_op = &udf_sb_ops;
 	sb->s_export_op = &udf_export_ops;
-	sb->dq_op = NULL;
+
 	sb->s_dirt = 0;
 	sb->s_magic = UDF_SUPER_MAGIC;
 	sb->s_time_gran = 1000;
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 9079ff7..2bac035 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -131,7 +131,6 @@
 
 /* file.c */
 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
-extern int udf_setattr(struct dentry *dentry, struct iattr *iattr);
 /* inode.c */
 extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
 extern int udf_sync_inode(struct inode *);
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 5cfa4d8..048484f 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -12,7 +12,6 @@
 #include <linux/stat.h>
 #include <linux/time.h>
 #include <linux/string.h>
-#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/capability.h>
 #include <linux/bitops.h>
@@ -85,9 +84,6 @@
 				   "bit already cleared for fragment %u", i);
 	}
 	
-	dquot_free_block(inode, count);
-
-	
 	fs32_add(sb, &ucg->cg_cs.cs_nffree, count);
 	uspi->cs_total.cs_nffree += count;
 	fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
@@ -195,7 +191,6 @@
 		ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
 		if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
 			ufs_clusteracct (sb, ucpi, blkno, 1);
-		dquot_free_block(inode, uspi->s_fpb);
 
 		fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
 		uspi->cs_total.cs_nbfree++;
@@ -511,7 +506,6 @@
 	struct ufs_cg_private_info * ucpi;
 	struct ufs_cylinder_group * ucg;
 	unsigned cgno, fragno, fragoff, count, fragsize, i;
-	int ret;
 	
 	UFSD("ENTER, fragment %llu, oldcount %u, newcount %u\n",
 	     (unsigned long long)fragment, oldcount, newcount);
@@ -557,11 +551,6 @@
 		fs32_add(sb, &ucg->cg_frsum[fragsize - count], 1);
 	for (i = oldcount; i < newcount; i++)
 		ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i);
-	ret = dquot_alloc_block(inode, count);
-	if (ret) {
-		*err = ret;
-		return 0;
-	}
 
 	fs32_sub(sb, &ucg->cg_cs.cs_nffree, count);
 	fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
@@ -598,7 +587,6 @@
 	struct ufs_cylinder_group * ucg;
 	unsigned oldcg, i, j, k, allocsize;
 	u64 result;
-	int ret;
 	
 	UFSD("ENTER, ino %lu, cgno %u, goal %llu, count %u\n",
 	     inode->i_ino, cgno, (unsigned long long)goal, count);
@@ -667,7 +655,6 @@
 		for (i = count; i < uspi->s_fpb; i++)
 			ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i);
 		i = uspi->s_fpb - count;
-		dquot_free_block(inode, i);
 
 		fs32_add(sb, &ucg->cg_cs.cs_nffree, i);
 		uspi->cs_total.cs_nffree += i;
@@ -679,11 +666,6 @@
 	result = ufs_bitmap_search (sb, ucpi, goal, allocsize);
 	if (result == INVBLOCK)
 		return 0;
-	ret = dquot_alloc_block(inode, count);
-	if (ret) {
-		*err = ret;
-		return 0;
-	}
 	for (i = 0; i < count; i++)
 		ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, result + i);
 	
@@ -718,7 +700,6 @@
 	struct ufs_super_block_first * usb1;
 	struct ufs_cylinder_group * ucg;
 	u64 result, blkno;
-	int ret;
 
 	UFSD("ENTER, goal %llu\n", (unsigned long long)goal);
 
@@ -752,11 +733,6 @@
 	ubh_clrblock (UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
 	if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
 		ufs_clusteracct (sb, ucpi, blkno, -1);
-	ret = dquot_alloc_block(inode, uspi->s_fpb);
-	if (ret) {
-		*err = ret;
-		return INVBLOCK;
-	}
 
 	fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1);
 	uspi->cs_total.cs_nbfree--;
diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c
index 317a0d4..ec78475 100644
--- a/fs/ufs/dir.c
+++ b/fs/ufs/dir.c
@@ -666,6 +666,6 @@
 const struct file_operations ufs_dir_operations = {
 	.read		= generic_read_dir,
 	.readdir	= ufs_readdir,
-	.fsync		= simple_fsync,
+	.fsync		= generic_file_fsync,
 	.llseek		= generic_file_llseek,
 };
diff --git a/fs/ufs/file.c b/fs/ufs/file.c
index a8962ce..33afa20 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -24,7 +24,6 @@
  */
 
 #include <linux/fs.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -41,7 +40,7 @@
 	.write		= do_sync_write,
 	.aio_write	= generic_file_aio_write,
 	.mmap		= generic_file_mmap,
-	.open           = dquot_file_open,
-	.fsync		= simple_fsync,
+	.open           = generic_file_open,
+	.fsync		= generic_file_fsync,
 	.splice_read	= generic_file_splice_read,
 };
diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
index 3a959d5..594480e 100644
--- a/fs/ufs/ialloc.c
+++ b/fs/ufs/ialloc.c
@@ -27,7 +27,6 @@
 #include <linux/time.h>
 #include <linux/stat.h>
 #include <linux/string.h>
-#include <linux/quotaops.h>
 #include <linux/buffer_head.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
@@ -95,9 +94,6 @@
 
 	is_directory = S_ISDIR(inode->i_mode);
 
-	dquot_free_inode(inode);
-	dquot_drop(inode);
-
 	clear_inode (inode);
 
 	if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_iusedoff, bit))
@@ -347,21 +343,12 @@
 
 	unlock_super (sb);
 
-	dquot_initialize(inode);
-	err = dquot_alloc_inode(inode);
-	if (err) {
-		dquot_drop(inode);
-		goto fail_without_unlock;
-	}
-
 	UFSD("allocating inode %lu\n", inode->i_ino);
 	UFSD("EXIT\n");
 	return inode;
 
 fail_remove_inode:
 	unlock_super(sb);
-fail_without_unlock:
-	inode->i_flags |= S_NOQUOTA;
 	inode->i_nlink = 0;
 	iput(inode);
 	UFSD("EXIT (FAILED): err %d\n", err);
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index cffa756..73fe773 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -37,7 +37,6 @@
 #include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
 #include <linux/writeback.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -910,9 +909,6 @@
 {
 	loff_t old_i_size;
 
-	if (!is_bad_inode(inode))
-		dquot_initialize(inode);
-
 	truncate_inode_pages(&inode->i_data, 0);
 	if (is_bad_inode(inode))
 		goto no_delete;
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index eabc02e..b056f02 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -30,7 +30,6 @@
 #include <linux/time.h>
 #include <linux/fs.h>
 #include <linux/smp_lock.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -86,8 +85,6 @@
 
 	UFSD("BEGIN\n");
 
-	dquot_initialize(dir);
-
 	inode = ufs_new_inode(dir, mode);
 	err = PTR_ERR(inode);
 
@@ -112,8 +109,6 @@
 	if (!old_valid_dev(rdev))
 		return -EINVAL;
 
-	dquot_initialize(dir);
-
 	inode = ufs_new_inode(dir, mode);
 	err = PTR_ERR(inode);
 	if (!IS_ERR(inode)) {
@@ -138,8 +133,6 @@
 	if (l > sb->s_blocksize)
 		goto out_notlocked;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
 	err = PTR_ERR(inode);
@@ -185,8 +178,6 @@
 		return -EMLINK;
 	}
 
-	dquot_initialize(dir);
-
 	inode->i_ctime = CURRENT_TIME_SEC;
 	inode_inc_link_count(inode);
 	atomic_inc(&inode->i_count);
@@ -204,8 +195,6 @@
 	if (dir->i_nlink >= UFS_LINK_MAX)
 		goto out;
 
-	dquot_initialize(dir);
-
 	lock_kernel();
 	inode_inc_link_count(dir);
 
@@ -250,8 +239,6 @@
 	struct page *page;
 	int err = -ENOENT;
 
-	dquot_initialize(dir);
-
 	de = ufs_find_entry(dir, &dentry->d_name, &page);
 	if (!de)
 		goto out;
@@ -296,9 +283,6 @@
 	struct ufs_dir_entry *old_de;
 	int err = -ENOENT;
 
-	dquot_initialize(old_dir);
-	dquot_initialize(new_dir);
-
 	old_de = ufs_find_entry(old_dir, &old_dentry->d_name, &old_page);
 	if (!old_de)
 		goto out;
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 14743d9..3ec5a9e 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -77,7 +77,6 @@
 
 #include <linux/errno.h>
 #include <linux/fs.h>
-#include <linux/quotaops.h>
 #include <linux/slab.h>
 #include <linux/time.h>
 #include <linux/stat.h>
@@ -918,6 +917,7 @@
 	sbi->s_bytesex = BYTESEX_LE;
 	switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
 		case UFS_MAGIC:
+		case UFS_MAGIC_BW:
 		case UFS2_MAGIC:
 		case UFS_MAGIC_LFN:
 	        case UFS_MAGIC_FEA:
@@ -927,6 +927,7 @@
 	sbi->s_bytesex = BYTESEX_BE;
 	switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
 		case UFS_MAGIC:
+		case UFS_MAGIC_BW:
 		case UFS2_MAGIC:
 		case UFS_MAGIC_LFN:
 	        case UFS_MAGIC_FEA:
@@ -1045,7 +1046,7 @@
 	 */
 	sb->s_op = &ufs_super_ops;
 	sb->s_export_op = &ufs_export_ops;
-	sb->dq_op = NULL; /***/
+
 	sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
 
 	uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
@@ -1435,126 +1436,19 @@
 	kmem_cache_destroy(ufs_inode_cachep);
 }
 
-static void ufs_clear_inode(struct inode *inode)
-{
-	dquot_drop(inode);
-}
-
-#ifdef CONFIG_QUOTA
-static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
-static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
-#endif
-
 static const struct super_operations ufs_super_ops = {
 	.alloc_inode	= ufs_alloc_inode,
 	.destroy_inode	= ufs_destroy_inode,
 	.write_inode	= ufs_write_inode,
 	.delete_inode	= ufs_delete_inode,
-	.clear_inode	= ufs_clear_inode,
 	.put_super	= ufs_put_super,
 	.write_super	= ufs_write_super,
 	.sync_fs	= ufs_sync_fs,
 	.statfs		= ufs_statfs,
 	.remount_fs	= ufs_remount,
 	.show_options   = ufs_show_options,
-#ifdef CONFIG_QUOTA
-	.quota_read	= ufs_quota_read,
-	.quota_write	= ufs_quota_write,
-#endif
 };
 
-#ifdef CONFIG_QUOTA
-
-/* Read data from quotafile - avoid pagecache and such because we cannot afford
- * acquiring the locks... As quota files are never truncated and quota code
- * itself serializes the operations (and noone else should touch the files)
- * we don't have to be afraid of races */
-static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data,
-			       size_t len, loff_t off)
-{
-	struct inode *inode = sb_dqopt(sb)->files[type];
-	sector_t blk = off >> sb->s_blocksize_bits;
-	int err = 0;
-	int offset = off & (sb->s_blocksize - 1);
-	int tocopy;
-	size_t toread;
-	struct buffer_head *bh;
-	loff_t i_size = i_size_read(inode);
-
-	if (off > i_size)
-		return 0;
-	if (off+len > i_size)
-		len = i_size-off;
-	toread = len;
-	while (toread > 0) {
-		tocopy = sb->s_blocksize - offset < toread ?
-				sb->s_blocksize - offset : toread;
-
-		bh = ufs_bread(inode, blk, 0, &err);
-		if (err)
-			return err;
-		if (!bh)	/* A hole? */
-			memset(data, 0, tocopy);
-		else {
-			memcpy(data, bh->b_data+offset, tocopy);
-			brelse(bh);
-		}
-		offset = 0;
-		toread -= tocopy;
-		data += tocopy;
-		blk++;
-	}
-	return len;
-}
-
-/* Write to quotafile */
-static ssize_t ufs_quota_write(struct super_block *sb, int type,
-				const char *data, size_t len, loff_t off)
-{
-	struct inode *inode = sb_dqopt(sb)->files[type];
-	sector_t blk = off >> sb->s_blocksize_bits;
-	int err = 0;
-	int offset = off & (sb->s_blocksize - 1);
-	int tocopy;
-	size_t towrite = len;
-	struct buffer_head *bh;
-
-	mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
-	while (towrite > 0) {
-		tocopy = sb->s_blocksize - offset < towrite ?
-				sb->s_blocksize - offset : towrite;
-
-		bh = ufs_bread(inode, blk, 1, &err);
-		if (!bh)
-			goto out;
-		lock_buffer(bh);
-		memcpy(bh->b_data+offset, data, tocopy);
-		flush_dcache_page(bh->b_page);
-		set_buffer_uptodate(bh);
-		mark_buffer_dirty(bh);
-		unlock_buffer(bh);
-		brelse(bh);
-		offset = 0;
-		towrite -= tocopy;
-		data += tocopy;
-		blk++;
-	}
-out:
-	if (len == towrite) {
-		mutex_unlock(&inode->i_mutex);
-		return err;
-	}
-	if (inode->i_size < off+len-towrite)
-		i_size_write(inode, off+len-towrite);
-	inode->i_version++;
-	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-	mark_inode_dirty(inode);
-	mutex_unlock(&inode->i_mutex);
-	return len - towrite;
-}
-
-#endif
-
 static int ufs_get_sb(struct file_system_type *fs_type,
 	int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 {
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index f294c44..589e01a 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -44,7 +44,6 @@
 #include <linux/buffer_head.h>
 #include <linux/blkdev.h>
 #include <linux/sched.h>
-#include <linux/quotaops.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -501,12 +500,10 @@
 	return err;
 }
 
-
 /*
- * We don't define our `inode->i_op->truncate', and call it here,
- * because of:
- * - there is no way to know old size
- * - there is no way inform user about error, if it happens in `truncate'
+ * TODO:
+ *	- truncate case should use proper ordering instead of using
+ *	  simple_setsize
  */
 int ufs_setattr(struct dentry *dentry, struct iattr *attr)
 {
@@ -518,19 +515,10 @@
 	if (error)
 		return error;
 
-	if (is_quota_modification(inode, attr))
-		dquot_initialize(inode);
-
-	if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
-	    (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
-		error = dquot_transfer(inode, attr);
-		if (error)
-			return error;
-	}
 	if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) {
 		loff_t old_i_size = inode->i_size;
 
-		error = vmtruncate(inode, attr->ia_size);
+		error = simple_setsize(inode, attr->ia_size);
 		if (error)
 			return error;
 		error = ufs_truncate(inode, old_i_size);
diff --git a/fs/ufs/ufs_fs.h b/fs/ufs/ufs_fs.h
index 6943ec6..8aba544 100644
--- a/fs/ufs/ufs_fs.h
+++ b/fs/ufs/ufs_fs.h
@@ -48,6 +48,7 @@
 #define UFS_SECTOR_SIZE 512
 #define UFS_SECTOR_BITS 9
 #define UFS_MAGIC  0x00011954
+#define UFS_MAGIC_BW 0x0f242697
 #define UFS2_MAGIC 0x19540119
 #define UFS_CIGAM  0x54190100 /* byteswapped MAGIC */
 
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
index d8fb1b5..257a56b 100644
--- a/fs/xfs/linux-2.6/xfs_file.c
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -100,10 +100,10 @@
 STATIC int
 xfs_file_fsync(
 	struct file		*file,
-	struct dentry		*dentry,
 	int			datasync)
 {
-	struct xfs_inode	*ip = XFS_I(dentry->d_inode);
+	struct inode		*inode = file->f_mapping->host;
+	struct xfs_inode	*ip = XFS_I(inode);
 	struct xfs_trans	*tp;
 	int			error = 0;
 	int			log_flushed = 0;
@@ -140,8 +140,8 @@
 	 * might gets cleared when the inode gets written out via the AIL
 	 * or xfs_iflush_cluster.
 	 */
-	if (((dentry->d_inode->i_state & I_DIRTY_DATASYNC) ||
-	    ((dentry->d_inode->i_state & I_DIRTY_SYNC) && !datasync)) &&
+	if (((inode->i_state & I_DIRTY_DATASYNC) ||
+	    ((inode->i_state & I_DIRTY_SYNC) && !datasync)) &&
 	    ip->i_update_core) {
 		/*
 		 * Kick off a transaction to log the inode core to get the
@@ -868,7 +868,7 @@
 			mutex_lock(&inode->i_mutex);
 		xfs_ilock(ip, iolock);
 
-		error2 = -xfs_file_fsync(file, file->f_path.dentry,
+		error2 = -xfs_file_fsync(file,
 					 (file->f_flags & __O_SYNC) ? 0 : 1);
 		if (!error)
 			error = error2;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 7bf83dd..baacd98 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -373,7 +373,7 @@
 	struct acpi_pci_id id;
 	struct pci_bus *bus;
 	u16 segment;
-	u8 bus_nr;
+	struct resource secondary;	/* downstream bus range */
 
 	u32 osc_support_set;	/* _OSC state of support bits */
 	u32 osc_control_set;	/* _OSC state of control bits */
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 4f7b448..23d78b4 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -104,8 +104,7 @@
 
 /* Arch-defined function to add a bus to the system */
 
-struct pci_bus *pci_acpi_scan_root(struct acpi_device *device, int domain,
-				   int bus);
+struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root);
 void pci_acpi_crs_quirks(void);
 
 /* --------------------------------------------------------------------------
diff --git a/include/acpi/acpi_hest.h b/include/acpi/acpi_hest.h
deleted file mode 100644
index 63194d0..0000000
--- a/include/acpi/acpi_hest.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#ifndef __ACPI_HEST_H
-#define __ACPI_HEST_H
-
-#include <linux/pci.h>
-
-#ifdef CONFIG_ACPI
-extern int acpi_hest_firmware_first_pci(struct pci_dev *pci);
-#else
-static inline int acpi_hest_firmware_first_pci(struct pci_dev *pci) { return 0; }
-#endif
-
-#endif
diff --git a/include/acpi/apei.h b/include/acpi/apei.h
new file mode 100644
index 0000000..b336502
--- /dev/null
+++ b/include/acpi/apei.h
@@ -0,0 +1,34 @@
+/*
+ * apei.h - ACPI Platform Error Interface
+ */
+
+#ifndef ACPI_APEI_H
+#define ACPI_APEI_H
+
+#include <linux/acpi.h>
+#include <linux/cper.h>
+#include <asm/ioctls.h>
+
+#define APEI_ERST_INVALID_RECORD_ID	0xffffffffffffffffULL
+
+#define APEI_ERST_CLEAR_RECORD		_IOW('E', 1, u64)
+#define APEI_ERST_GET_RECORD_COUNT	_IOR('E', 2, u32)
+
+#ifdef __KERNEL__
+
+extern int hest_disable;
+extern int erst_disable;
+
+typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
+int apei_hest_parse(apei_hest_func_t func, void *data);
+
+int erst_write(const struct cper_record_header *record);
+ssize_t erst_get_record_count(void);
+int erst_get_next_record_id(u64 *record_id);
+ssize_t erst_read(u64 record_id, struct cper_record_header *record,
+		  size_t buflen);
+ssize_t erst_read_next(struct cper_record_header *record, size_t buflen);
+int erst_clear(u64 record_id);
+
+#endif
+#endif
diff --git a/include/acpi/atomicio.h b/include/acpi/atomicio.h
new file mode 100644
index 0000000..8b9fb4b
--- /dev/null
+++ b/include/acpi/atomicio.h
@@ -0,0 +1,10 @@
+#ifndef ACPI_ATOMIC_IO_H
+#define ACPI_ATOMIC_IO_H
+
+int acpi_pre_map_gar(struct acpi_generic_address *reg);
+int acpi_post_unmap_gar(struct acpi_generic_address *reg);
+
+int acpi_atomic_read(u64 *val, struct acpi_generic_address *reg);
+int acpi_atomic_write(u64 val, struct acpi_generic_address *reg);
+
+#endif
diff --git a/include/acpi/hed.h b/include/acpi/hed.h
new file mode 100644
index 0000000..46e1249
--- /dev/null
+++ b/include/acpi/hed.h
@@ -0,0 +1,18 @@
+/*
+ * hed.h - ACPI Hardware Error Device
+ *
+ * Copyright (C) 2009, Intel Corp.
+ *	Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This file is released under the GPLv2.
+ */
+
+#ifndef ACPI_HED_H
+#define ACPI_HED_H
+
+#include <linux/notifier.h>
+
+int register_acpi_hed_notifier(struct notifier_block *nb);
+void unregister_acpi_hed_notifier(struct notifier_block *nb);
+
+#endif
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 86825dd..da565a4 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -52,17 +52,6 @@
 	u64 address;
 } __attribute__ ((packed));
 
-struct acpi_processor_cx_policy {
-	u32 count;
-	struct acpi_processor_cx *state;
-	struct {
-		u32 time;
-		u32 ticks;
-		u32 count;
-		u32 bm;
-	} threshold;
-};
-
 struct acpi_processor_cx {
 	u8 valid;
 	u8 type;
@@ -74,8 +63,6 @@
 	u32 power;
 	u32 usage;
 	u64 time;
-	struct acpi_processor_cx_policy promotion;
-	struct acpi_processor_cx_policy demotion;
 	char desc[ACPI_CX_DESC_LEN];
 };
 
diff --git a/include/acpi/video.h b/include/acpi/video.h
index cf7be3d..551793c 100644
--- a/include/acpi/video.h
+++ b/include/acpi/video.h
@@ -1,12 +1,28 @@
 #ifndef __ACPI_VIDEO_H
 #define __ACPI_VIDEO_H
 
+#define ACPI_VIDEO_DISPLAY_CRT  1
+#define ACPI_VIDEO_DISPLAY_TV   2
+#define ACPI_VIDEO_DISPLAY_DVI  3
+#define ACPI_VIDEO_DISPLAY_LCD  4
+
+#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
+#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL   0x0110
+#define ACPI_VIDEO_DISPLAY_LEGACY_TV      0x0200
+
 #if (defined CONFIG_ACPI_VIDEO || defined CONFIG_ACPI_VIDEO_MODULE)
 extern int acpi_video_register(void);
 extern void acpi_video_unregister(void);
+extern int acpi_video_get_edid(struct acpi_device *device, int type,
+			       int device_id, void **edid);
 #else
 static inline int acpi_video_register(void) { return 0; }
 static inline void acpi_video_unregister(void) { return; }
+static inline int acpi_video_get_edid(struct acpi_device *device, int type,
+				      int device_id, void **edid)
+{
+	return -ENODEV;
+}
 #endif
 
 #endif
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index 6920695..0c80bb3 100644
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -123,15 +123,7 @@
 						 size_t size,
 						 enum dma_data_direction dir)
 {
-	struct dma_map_ops *ops = get_dma_ops(dev);
-
-	BUG_ON(!valid_dma_direction(dir));
-	if (ops->sync_single_range_for_cpu) {
-		ops->sync_single_range_for_cpu(dev, addr, offset, size, dir);
-		debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
-
-	} else
-		dma_sync_single_for_cpu(dev, addr + offset, size, dir);
+	dma_sync_single_for_cpu(dev, addr + offset, size, dir);
 }
 
 static inline void dma_sync_single_range_for_device(struct device *dev,
@@ -140,15 +132,7 @@
 						    size_t size,
 						    enum dma_data_direction dir)
 {
-	struct dma_map_ops *ops = get_dma_ops(dev);
-
-	BUG_ON(!valid_dma_direction(dir));
-	if (ops->sync_single_range_for_device) {
-		ops->sync_single_range_for_device(dev, addr, offset, size, dir);
-		debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
-
-	} else
-		dma_sync_single_for_device(dev, addr + offset, size, dir);
+	dma_sync_single_for_device(dev, addr + offset, size, dir);
 }
 
 static inline void
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 979c6a5..4f3d75e 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -60,7 +60,9 @@
  * @names: if set, must be an array of strings to use as alternative
  *      names for the GPIOs in this chip. Any entry in the array
  *      may be NULL if there is no alias for the GPIO, however the
- *      array must be @ngpio entries long.
+ *      array must be @ngpio entries long.  A name can include a single printk
+ *      format specifier for an unsigned int.  It is substituted by the actual
+ *      number of the gpio.
  *
  * A gpio_chip can help platforms abstract various sources of GPIOs so
  * they can all be accessed through a common programing interface.
@@ -88,6 +90,9 @@
 						unsigned offset);
 	int			(*direction_output)(struct gpio_chip *chip,
 						unsigned offset, int value);
+	int			(*set_debounce)(struct gpio_chip *chip,
+						unsigned offset, unsigned debounce);
+
 	void			(*set)(struct gpio_chip *chip,
 						unsigned offset, int value);
 
@@ -98,7 +103,7 @@
 						struct gpio_chip *chip);
 	int			base;
 	u16			ngpio;
-	char			**names;
+	const char		*const *names;
 	unsigned		can_sleep:1;
 	unsigned		exported:1;
 };
@@ -121,6 +126,8 @@
 extern int gpio_direction_input(unsigned gpio);
 extern int gpio_direction_output(unsigned gpio, int value);
 
+extern int gpio_set_debounce(unsigned gpio, unsigned debounce);
+
 extern int gpio_get_value_cansleep(unsigned gpio);
 extern void gpio_set_value_cansleep(unsigned gpio, int value);
 
diff --git a/include/asm-generic/scatterlist.h b/include/asm-generic/scatterlist.h
index 8b94544..5de0735 100644
--- a/include/asm-generic/scatterlist.h
+++ b/include/asm-generic/scatterlist.h
@@ -11,7 +11,9 @@
 	unsigned int	offset;
 	unsigned int	length;
 	dma_addr_t	dma_address;
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
 	unsigned int	dma_length;
+#endif
 };
 
 /*
@@ -22,22 +24,11 @@
  * is 0.
  */
 #define sg_dma_address(sg)	((sg)->dma_address)
-#ifndef sg_dma_len
-/*
- * Normally, you have an iommu on 64 bit machines, but not on 32 bit
- * machines. Architectures that are differnt should override this.
- */
-#if __BITS_PER_LONG == 64
+
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
 #define sg_dma_len(sg)		((sg)->dma_length)
 #else
 #define sg_dma_len(sg)		((sg)->length)
-#endif /* 64 bit */
-#endif /* sg_dma_len */
-
-#ifndef ISA_DMA_THRESHOLD
-#define ISA_DMA_THRESHOLD	(~0UL)
 #endif
 
-#define ARCH_HAS_SG_CHAIN
-
 #endif /* __ASM_GENERIC_SCATTERLIST_H */
diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 510df36..fd60700 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -34,6 +34,9 @@
 #ifndef cpu_to_node
 #define cpu_to_node(cpu)	((void)(cpu),0)
 #endif
+#ifndef cpu_to_mem
+#define cpu_to_mem(cpu)		((void)(cpu),0)
+#endif
 #ifndef parent_node
 #define parent_node(node)	((void)(node),0)
 #endif
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 67e6520..ef779c6 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -247,10 +247,10 @@
 	}								\
 									\
 	/* RapidIO route ops */						\
-	.rio_route        : AT(ADDR(.rio_route) - LOAD_OFFSET) {	\
-		VMLINUX_SYMBOL(__start_rio_route_ops) = .;		\
-		*(.rio_route_ops)					\
-		VMLINUX_SYMBOL(__end_rio_route_ops) = .;		\
+	.rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {		\
+		VMLINUX_SYMBOL(__start_rio_switch_ops) = .;		\
+		*(.rio_switch_ops)					\
+		VMLINUX_SYMBOL(__end_rio_switch_ops) = .;		\
 	}								\
 									\
 	TRACEDATA							\
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 3da73f5..224a38c 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -248,11 +248,12 @@
 int acpi_check_mem_region(resource_size_t start, resource_size_t n,
 		      const char *name);
 
+int acpi_resources_are_enforced(void);
+
 #ifdef CONFIG_PM_SLEEP
 void __init acpi_no_s4_hw_signature(void);
 void __init acpi_old_suspend_ordering(void);
 void __init acpi_s4_no_nvs(void);
-void __init acpi_set_sci_en_on_resume(void);
 #endif /* CONFIG_PM_SLEEP */
 
 struct acpi_osc_context {
diff --git a/include/linux/aio.h b/include/linux/aio.h
index 811dbb3..7a8db41 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -212,6 +212,8 @@
 extern int aio_complete(struct kiocb *iocb, long res, long res2);
 struct mm_struct;
 extern void exit_aio(struct mm_struct *mm);
+extern long do_io_submit(aio_context_t ctx_id, long nr,
+			 struct iocb __user *__user *iocbpp, bool compat);
 #else
 static inline ssize_t wait_on_sync_kiocb(struct kiocb *iocb) { return 0; }
 static inline int aio_put_req(struct kiocb *iocb) { return 0; }
@@ -219,6 +221,9 @@
 static inline int aio_complete(struct kiocb *iocb, long res, long res2) { return 0; }
 struct mm_struct;
 static inline void exit_aio(struct mm_struct *mm) { }
+static inline long do_io_submit(aio_context_t ctx_id, long nr,
+				struct iocb __user * __user *iocbpp,
+				bool compat) { return 0; }
 #endif /* CONFIG_AIO */
 
 static inline struct kiocb *list_kiocb(struct list_head *h)
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 16ed028..1b9ba19 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -203,6 +203,9 @@
 int block_read_full_page(struct page*, get_block_t*);
 int block_is_partially_uptodate(struct page *page, read_descriptor_t *desc,
 				unsigned long from);
+int block_write_begin_newtrunc(struct file *, struct address_space *,
+				loff_t, unsigned, unsigned,
+				struct page **, void **, get_block_t*);
 int block_write_begin(struct file *, struct address_space *,
 				loff_t, unsigned, unsigned,
 				struct page **, void **, get_block_t*);
@@ -214,6 +217,9 @@
 				struct page *, void *);
 void page_zero_new_buffers(struct page *page, unsigned from, unsigned to);
 int block_prepare_write(struct page*, unsigned, unsigned, get_block_t*);
+int cont_write_begin_newtrunc(struct file *, struct address_space *, loff_t,
+			unsigned, unsigned, struct page **, void **,
+			get_block_t *, loff_t *);
 int cont_write_begin(struct file *, struct address_space *, loff_t,
 			unsigned, unsigned, struct page **, void **,
 			get_block_t *, loff_t *);
@@ -224,7 +230,10 @@
 void block_sync_page(struct page *);
 sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *);
 int block_truncate_page(struct address_space *, loff_t, get_block_t *);
-int file_fsync(struct file *, struct dentry *, int);
+int file_fsync(struct file *, int);
+int nobh_write_begin_newtrunc(struct file *, struct address_space *,
+				loff_t, unsigned, unsigned,
+				struct page **, void **, get_block_t*);
 int nobh_write_begin(struct file *, struct address_space *,
 				loff_t, unsigned, unsigned,
 				struct page **, void **, get_block_t*);
diff --git a/include/linux/byteorder/big_endian.h b/include/linux/byteorder/big_endian.h
index d53a67d..3c80fd7 100644
--- a/include/linux/byteorder/big_endian.h
+++ b/include/linux/byteorder/big_endian.h
@@ -7,9 +7,6 @@
 #ifndef __BIG_ENDIAN_BITFIELD
 #define __BIG_ENDIAN_BITFIELD
 #endif
-#ifndef __BYTE_ORDER
-#define __BYTE_ORDER __BIG_ENDIAN
-#endif
 
 #include <linux/types.h>
 #include <linux/swab.h>
diff --git a/include/linux/byteorder/little_endian.h b/include/linux/byteorder/little_endian.h
index f7f8ad1..83195fb 100644
--- a/include/linux/byteorder/little_endian.h
+++ b/include/linux/byteorder/little_endian.h
@@ -7,9 +7,6 @@
 #ifndef __LITTLE_ENDIAN_BITFIELD
 #define __LITTLE_ENDIAN_BITFIELD
 #endif
-#ifndef __BYTE_ORDER
-#define __BYTE_ORDER __LITTLE_ENDIAN
-#endif
 
 #include <linux/types.h>
 #include <linux/swab.h>
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 8f78073..0c62160 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -397,7 +397,7 @@
 	 * This callback must be implemented, if you want provide
 	 * notification functionality.
 	 */
-	int (*unregister_event)(struct cgroup *cgrp, struct cftype *cft,
+	void (*unregister_event)(struct cgroup *cgrp, struct cftype *cft,
 			struct eventfd_ctx *eventfd);
 };
 
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 717c691..168f7da 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -356,5 +356,9 @@
 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename,
 				  int flags, int mode);
 
+extern ssize_t compat_rw_copy_check_uvector(int type,
+		const struct compat_iovec __user *uvector, unsigned long nr_segs,
+		unsigned long fast_segs, struct iovec *fast_pointer,
+		struct iovec **ret_pointer);
 #endif /* CONFIG_COMPAT */
 #endif /* _LINUX_COMPAT_H */
diff --git a/include/linux/completion.h b/include/linux/completion.h
index 4a6b604..51e3145 100644
--- a/include/linux/completion.h
+++ b/include/linux/completion.h
@@ -83,6 +83,8 @@
 						   unsigned long timeout);
 extern unsigned long wait_for_completion_interruptible_timeout(
 			struct completion *x, unsigned long timeout);
+extern unsigned long wait_for_completion_killable_timeout(
+			struct completion *x, unsigned long timeout);
 extern bool try_wait_for_completion(struct completion *x);
 extern bool completion_done(struct completion *x);
 
diff --git a/include/linux/cper.h b/include/linux/cper.h
new file mode 100644
index 0000000..4b38f90
--- /dev/null
+++ b/include/linux/cper.h
@@ -0,0 +1,314 @@
+/*
+ * UEFI Common Platform Error Record
+ *
+ * Copyright (C) 2010, Intel Corp.
+ *	Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef LINUX_CPER_H
+#define LINUX_CPER_H
+
+#include <linux/uuid.h>
+
+/* CPER record signature and the size */
+#define CPER_SIG_RECORD				"CPER"
+#define CPER_SIG_SIZE				4
+/* Used in signature_end field in struct cper_record_header */
+#define CPER_SIG_END				0xffffffff
+
+/*
+ * CPER record header revision, used in revision field in struct
+ * cper_record_header
+ */
+#define CPER_RECORD_REV				0x0100
+
+/*
+ * Severity difinition for error_severity in struct cper_record_header
+ * and section_severity in struct cper_section_descriptor
+ */
+#define CPER_SER_RECOVERABLE			0x0
+#define CPER_SER_FATAL				0x1
+#define CPER_SER_CORRECTED			0x2
+#define CPER_SER_INFORMATIONAL			0x3
+
+/*
+ * Validation bits difinition for validation_bits in struct
+ * cper_record_header. If set, corresponding fields in struct
+ * cper_record_header contain valid information.
+ *
+ * corresponds platform_id
+ */
+#define CPER_VALID_PLATFORM_ID			0x0001
+/* corresponds timestamp */
+#define CPER_VALID_TIMESTAMP			0x0002
+/* corresponds partition_id */
+#define CPER_VALID_PARTITION_ID			0x0004
+
+/*
+ * Notification type used to generate error record, used in
+ * notification_type in struct cper_record_header
+ *
+ * Corrected Machine Check
+ */
+#define CPER_NOTIFY_CMC							\
+	UUID_LE(0x2DCE8BB1, 0xBDD7, 0x450e, 0xB9, 0xAD, 0x9C, 0xF4,	\
+		0xEB, 0xD4, 0xF8, 0x90)
+/* Corrected Platform Error */
+#define CPER_NOTIFY_CPE							\
+	UUID_LE(0x4E292F96, 0xD843, 0x4a55, 0xA8, 0xC2, 0xD4, 0x81,	\
+		0xF2, 0x7E, 0xBE, 0xEE)
+/* Machine Check Exception */
+#define CPER_NOTIFY_MCE							\
+	UUID_LE(0xE8F56FFE, 0x919C, 0x4cc5, 0xBA, 0x88, 0x65, 0xAB,	\
+		0xE1, 0x49, 0x13, 0xBB)
+/* PCI Express Error */
+#define CPER_NOTIFY_PCIE						\
+	UUID_LE(0xCF93C01F, 0x1A16, 0x4dfc, 0xB8, 0xBC, 0x9C, 0x4D,	\
+		0xAF, 0x67, 0xC1, 0x04)
+/* INIT Record (for IPF) */
+#define CPER_NOTIFY_INIT						\
+	UUID_LE(0xCC5263E8, 0x9308, 0x454a, 0x89, 0xD0, 0x34, 0x0B,	\
+		0xD3, 0x9B, 0xC9, 0x8E)
+/* Non-Maskable Interrupt */
+#define CPER_NOTIFY_NMI							\
+	UUID_LE(0x5BAD89FF, 0xB7E6, 0x42c9, 0x81, 0x4A, 0xCF, 0x24,	\
+		0x85, 0xD6, 0xE9, 0x8A)
+/* BOOT Error Record */
+#define CPER_NOTIFY_BOOT						\
+	UUID_LE(0x3D61A466, 0xAB40, 0x409a, 0xA6, 0x98, 0xF3, 0x62,	\
+		0xD4, 0x64, 0xB3, 0x8F)
+/* DMA Remapping Error */
+#define CPER_NOTIFY_DMAR						\
+	UUID_LE(0x667DD791, 0xC6B3, 0x4c27, 0x8A, 0x6B, 0x0F, 0x8E,	\
+		0x72, 0x2D, 0xEB, 0x41)
+
+/*
+ * Flags bits definitions for flags in struct cper_record_header
+ * If set, the error has been recovered
+ */
+#define CPER_HW_ERROR_FLAGS_RECOVERED		0x1
+/* If set, the error is for previous boot */
+#define CPER_HW_ERROR_FLAGS_PREVERR		0x2
+/* If set, the error is injected for testing */
+#define CPER_HW_ERROR_FLAGS_SIMULATED		0x4
+
+/*
+ * CPER section header revision, used in revision field in struct
+ * cper_section_descriptor
+ */
+#define CPER_SEC_REV				0x0100
+
+/*
+ * Validation bits difinition for validation_bits in struct
+ * cper_section_descriptor. If set, corresponding fields in struct
+ * cper_section_descriptor contain valid information.
+ *
+ * corresponds fru_id
+ */
+#define CPER_SEC_VALID_FRU_ID			0x1
+/* corresponds fru_text */
+#define CPER_SEC_VALID_FRU_TEXT			0x2
+
+/*
+ * Flags bits definitions for flags in struct cper_section_descriptor
+ *
+ * If set, the section is associated with the error condition
+ * directly, and should be focused on
+ */
+#define CPER_SEC_PRIMARY			0x0001
+/*
+ * If set, the error was not contained within the processor or memory
+ * hierarchy and the error may have propagated to persistent storage
+ * or network
+ */
+#define CPER_SEC_CONTAINMENT_WARNING		0x0002
+/* If set, the component must be re-initialized or re-enabled prior to use */
+#define CPER_SEC_RESET				0x0004
+/* If set, Linux may choose to discontinue use of the resource */
+#define CPER_SEC_ERROR_THRESHOLD_EXCEEDED	0x0008
+/*
+ * If set, resource could not be queried for error information due to
+ * conflicts with other system software or resources. Some fields of
+ * the section will be invalid
+ */
+#define CPER_SEC_RESOURCE_NOT_ACCESSIBLE	0x0010
+/*
+ * If set, action has been taken to ensure error containment (such as
+ * poisoning data), but the error has not been fully corrected and the
+ * data has not been consumed. Linux may choose to take further
+ * corrective action before the data is consumed
+ */
+#define CPER_SEC_LATENT_ERROR			0x0020
+
+/*
+ * Section type definitions, used in section_type field in struct
+ * cper_section_descriptor
+ *
+ * Processor Generic
+ */
+#define CPER_SEC_PROC_GENERIC						\
+	UUID_LE(0x9876CCAD, 0x47B4, 0x4bdb, 0xB6, 0x5E, 0x16, 0xF1,	\
+		0x93, 0xC4, 0xF3, 0xDB)
+/* Processor Specific: X86/X86_64 */
+#define CPER_SEC_PROC_IA						\
+	UUID_LE(0xDC3EA0B0, 0xA144, 0x4797, 0xB9, 0x5B, 0x53, 0xFA,	\
+		0x24, 0x2B, 0x6E, 0x1D)
+/* Processor Specific: IA64 */
+#define CPER_SEC_PROC_IPF						\
+	UUID_LE(0xE429FAF1, 0x3CB7, 0x11D4, 0x0B, 0xCA, 0x07, 0x00,	\
+		0x80, 0xC7, 0x3C, 0x88, 0x81)
+/* Platform Memory */
+#define CPER_SEC_PLATFORM_MEM						\
+	UUID_LE(0xA5BC1114, 0x6F64, 0x4EDE, 0xB8, 0x63, 0x3E, 0x83,	\
+		0xED, 0x7C, 0x83, 0xB1)
+#define CPER_SEC_PCIE							\
+	UUID_LE(0xD995E954, 0xBBC1, 0x430F, 0xAD, 0x91, 0xB4, 0x4D,	\
+		0xCB, 0x3C, 0x6F, 0x35)
+/* Firmware Error Record Reference */
+#define CPER_SEC_FW_ERR_REC_REF						\
+	UUID_LE(0x81212A96, 0x09ED, 0x4996, 0x94, 0x71, 0x8D, 0x72,	\
+		0x9C, 0x8E, 0x69, 0xED)
+/* PCI/PCI-X Bus */
+#define CPER_SEC_PCI_X_BUS						\
+	UUID_LE(0xC5753963, 0x3B84, 0x4095, 0xBF, 0x78, 0xED, 0xDA,	\
+		0xD3, 0xF9, 0xC9, 0xDD)
+/* PCI Component/Device */
+#define CPER_SEC_PCI_DEV						\
+	UUID_LE(0xEB5E4685, 0xCA66, 0x4769, 0xB6, 0xA2, 0x26, 0x06,	\
+		0x8B, 0x00, 0x13, 0x26)
+#define CPER_SEC_DMAR_GENERIC						\
+	UUID_LE(0x5B51FEF7, 0xC79D, 0x4434, 0x8F, 0x1B, 0xAA, 0x62,	\
+		0xDE, 0x3E, 0x2C, 0x64)
+/* Intel VT for Directed I/O specific DMAr */
+#define CPER_SEC_DMAR_VT						\
+	UUID_LE(0x71761D37, 0x32B2, 0x45cd, 0xA7, 0xD0, 0xB0, 0xFE,	\
+		0xDD, 0x93, 0xE8, 0xCF)
+/* IOMMU specific DMAr */
+#define CPER_SEC_DMAR_IOMMU						\
+	UUID_LE(0x036F84E1, 0x7F37, 0x428c, 0xA7, 0x9E, 0x57, 0x5F,	\
+		0xDF, 0xAA, 0x84, 0xEC)
+
+/*
+ * All tables and structs must be byte-packed to match CPER
+ * specification, since the tables are provided by the system BIOS
+ */
+#pragma pack(1)
+
+struct cper_record_header {
+	char	signature[CPER_SIG_SIZE];	/* must be CPER_SIG_RECORD */
+	__u16	revision;			/* must be CPER_RECORD_REV */
+	__u32	signature_end;			/* must be CPER_SIG_END */
+	__u16	section_count;
+	__u32	error_severity;
+	__u32	validation_bits;
+	__u32	record_length;
+	__u64	timestamp;
+	uuid_le	platform_id;
+	uuid_le	partition_id;
+	uuid_le	creator_id;
+	uuid_le	notification_type;
+	__u64	record_id;
+	__u32	flags;
+	__u64	persistence_information;
+	__u8	reserved[12];			/* must be zero */
+};
+
+struct cper_section_descriptor {
+	__u32	section_offset;		/* Offset in bytes of the
+					 *  section body from the base
+					 *  of the record header */
+	__u32	section_length;
+	__u16	revision;		/* must be CPER_RECORD_REV */
+	__u8	validation_bits;
+	__u8	reserved;		/* must be zero */
+	__u32	flags;
+	uuid_le	section_type;
+	uuid_le	fru_id;
+	__u32	section_severity;
+	__u8	fru_text[20];
+};
+
+/* Generic Processor Error Section */
+struct cper_sec_proc_generic {
+	__u64	validation_bits;
+	__u8	proc_type;
+	__u8	proc_isa;
+	__u8	proc_error_type;
+	__u8	operation;
+	__u8	flags;
+	__u8	level;
+	__u16	reserved;
+	__u64	cpu_version;
+	char	cpu_brand[128];
+	__u64	proc_id;
+	__u64	target_addr;
+	__u64	requestor_id;
+	__u64	responder_id;
+	__u64	ip;
+};
+
+/* IA32/X64 Processor Error Section */
+struct cper_sec_proc_ia {
+	__u64	validation_bits;
+	__u8	lapic_id;
+	__u8	cpuid[48];
+};
+
+/* IA32/X64 Processor Error Infomation Structure */
+struct cper_ia_err_info {
+	uuid_le	err_type;
+	__u64	validation_bits;
+	__u64	check_info;
+	__u64	target_id;
+	__u64	requestor_id;
+	__u64	responder_id;
+	__u64	ip;
+};
+
+/* IA32/X64 Processor Context Information Structure */
+struct cper_ia_proc_ctx {
+	__u16	reg_ctx_type;
+	__u16	reg_arr_size;
+	__u32	msr_addr;
+	__u64	mm_reg_addr;
+};
+
+/* Memory Error Section */
+struct cper_sec_mem_err {
+	__u64	validation_bits;
+	__u64	error_status;
+	__u64	physical_addr;
+	__u64	physical_addr_mask;
+	__u16	node;
+	__u16	card;
+	__u16	module;
+	__u16	bank;
+	__u16	device;
+	__u16	row;
+	__u16	column;
+	__u16	bit_pos;
+	__u64	requestor_id;
+	__u64	responder_id;
+	__u64	target_id;
+	__u8	error_type;
+};
+
+/* Reset to default packing */
+#pragma pack()
+
+u64 cper_next_record_id(void);
+
+#endif
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index dcf77fa..55215cc 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -125,6 +125,7 @@
 #ifdef CONFIG_CPU_IDLE
 
 extern int cpuidle_register_driver(struct cpuidle_driver *drv);
+struct cpuidle_driver *cpuidle_get_driver(void);
 extern void cpuidle_unregister_driver(struct cpuidle_driver *drv);
 extern int cpuidle_register_device(struct cpuidle_device *dev);
 extern void cpuidle_unregister_device(struct cpuidle_device *dev);
@@ -137,16 +138,17 @@
 #else
 
 static inline int cpuidle_register_driver(struct cpuidle_driver *drv)
-{return 0;}
+{return -ENODEV; }
+static inline struct cpuidle_driver *cpuidle_get_driver(void) {return NULL; }
 static inline void cpuidle_unregister_driver(struct cpuidle_driver *drv) { }
 static inline int cpuidle_register_device(struct cpuidle_device *dev)
-{return 0;}
+{return -ENODEV; }
 static inline void cpuidle_unregister_device(struct cpuidle_device *dev) { }
 
 static inline void cpuidle_pause_and_lock(void) { }
 static inline void cpuidle_resume_and_unlock(void) { }
 static inline int cpuidle_enable_device(struct cpuidle_device *dev)
-{return 0;}
+{return -ENODEV; }
 static inline void cpuidle_disable_device(struct cpuidle_device *dev) { }
 
 #endif
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 20b51ca..457ed76 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -69,6 +69,7 @@
 					struct task_struct *task);
 
 extern int cpuset_mem_spread_node(void);
+extern int cpuset_slab_spread_node(void);
 
 static inline int cpuset_do_page_mem_spread(void)
 {
@@ -194,6 +195,11 @@
 	return 0;
 }
 
+static inline int cpuset_slab_spread_node(void)
+{
+	return 0;
+}
+
 static inline int cpuset_do_page_mem_spread(void)
 {
 	return 0;
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 52507c3..75c0fa8 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -156,7 +156,6 @@
 extern struct cred *cred_alloc_blank(void);
 extern struct cred *prepare_creds(void);
 extern struct cred *prepare_exec_creds(void);
-extern struct cred *prepare_usermodehelper_creds(void);
 extern int commit_creds(struct cred *);
 extern void abort_creds(struct cred *);
 extern const struct cred *override_creds(const struct cred *);
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index fc1b930..e7d9b20 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -63,6 +63,8 @@
 				  struct dentry *parent, u16 *value);
 struct dentry *debugfs_create_x32(const char *name, mode_t mode,
 				  struct dentry *parent, u32 *value);
+struct dentry *debugfs_create_x64(const char *name, mode_t mode,
+				  struct dentry *parent, u64 *value);
 struct dentry *debugfs_create_size_t(const char *name, mode_t mode,
 				     struct dentry *parent, size_t *value);
 struct dentry *debugfs_create_bool(const char *name, mode_t mode,
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index ca32ed7..89b7e1a 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -40,16 +40,6 @@
 	void (*sync_single_for_device)(struct device *dev,
 				       dma_addr_t dma_handle, size_t size,
 				       enum dma_data_direction dir);
-	void (*sync_single_range_for_cpu)(struct device *dev,
-					  dma_addr_t dma_handle,
-					  unsigned long offset,
-					  size_t size,
-					  enum dma_data_direction dir);
-	void (*sync_single_range_for_device)(struct device *dev,
-					     dma_addr_t dma_handle,
-					     unsigned long offset,
-					     size_t size,
-					     enum dma_data_direction dir);
 	void (*sync_sg_for_cpu)(struct device *dev,
 				struct scatterlist *sg, int nents,
 				enum dma_data_direction dir);
@@ -105,21 +95,6 @@
 #include <asm-generic/dma-mapping-broken.h>
 #endif
 
-/* for backwards compatibility, removed soon */
-static inline void __deprecated dma_sync_single(struct device *dev,
-						dma_addr_t addr, size_t size,
-						enum dma_data_direction dir)
-{
-	dma_sync_single_for_cpu(dev, addr, size, dir);
-}
-
-static inline void __deprecated dma_sync_sg(struct device *dev,
-					    struct scatterlist *sg, int nelems,
-					    enum dma_data_direction dir)
-{
-	dma_sync_sg_for_cpu(dev, sg, nelems, dir);
-}
-
 static inline u64 dma_get_mask(struct device *dev)
 {
 	if (dev && dev->dma_mask && *dev->dma_mask)
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 5f494b4..7fc62d4 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -868,7 +868,7 @@
 extern void ext3_htree_free_dir_info(struct dir_private_info *p);
 
 /* fsync.c */
-extern int ext3_sync_file (struct file *, struct dentry *, int);
+extern int ext3_sync_file(struct file *, int);
 
 /* hash.c */
 extern int ext3fs_dirhash(const char *name, int len, struct
diff --git a/include/linux/fb.h b/include/linux/fb.h
index f3793eb..907ace3 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -4,8 +4,6 @@
 #include <linux/types.h>
 #include <linux/i2c.h>
 
-struct dentry;
-
 /* Definitions of frame buffers						*/
 
 #define FB_MAX			32	/* sufficient for now */
@@ -1017,8 +1015,7 @@
 				struct inode *inode,
 				struct file *file);
 extern void fb_deferred_io_cleanup(struct fb_info *info);
-extern int fb_deferred_io_fsync(struct file *file, struct dentry *dentry,
-				int datasync);
+extern int fb_deferred_io_fsync(struct file *file, int datasync);
 
 static inline bool fb_be_math(struct fb_info *info)
 {
diff --git a/include/linux/fec.h b/include/linux/fec.h
new file mode 100644
index 0000000..5d3523d
--- /dev/null
+++ b/include/linux/fec.h
@@ -0,0 +1,21 @@
+/* include/linux/fec.h
+ *
+ * Copyright (c) 2009 Orex Computed Radiography
+ *   Baruch Siach <baruch@tkos.co.il>
+ *
+ * Header file for the FEC platform data
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __LINUX_FEC_H__
+#define __LINUX_FEC_H__
+
+#include <linux/phy.h>
+
+struct fec_platform_data {
+	phy_interface_t phy;
+};
+
+#endif
diff --git a/include/linux/file.h b/include/linux/file.h
index 5555508..b1e1297 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -11,7 +11,6 @@
 
 struct file;
 
-extern void __fput(struct file *);
 extern void fput(struct file *);
 extern void drop_file_write_access(struct file *file);
 
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index 4bd94bf..72e2b8a 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -55,13 +55,11 @@
 #define CSR_DESCRIPTOR		0x01
 #define CSR_VENDOR		0x03
 #define CSR_HARDWARE_VERSION	0x04
-#define CSR_NODE_CAPABILITIES	0x0c
 #define CSR_UNIT		0x11
 #define CSR_SPECIFIER_ID	0x12
 #define CSR_VERSION		0x13
 #define CSR_DEPENDENT_INFO	0x14
 #define CSR_MODEL		0x17
-#define CSR_INSTANCE		0x18
 #define CSR_DIRECTORY_ID	0x20
 
 struct fw_csr_iterator {
@@ -89,7 +87,6 @@
 	int current_tlabel;
 	u64 tlabel_mask;
 	struct list_head transaction_list;
-	struct timer_list flush_timer;
 	unsigned long reset_jiffies;
 
 	unsigned long long guid;
@@ -290,6 +287,8 @@
 	int tlabel;
 	int timestamp;
 	struct list_head link;
+	struct fw_card *card;
+	struct timer_list split_timeout_timer;
 
 	struct fw_packet packet;
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b336cb9..3428393 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -954,6 +954,7 @@
 #define file_list_unlock() spin_unlock(&files_lock);
 
 #define get_file(x)	atomic_long_inc(&(x)->f_count)
+#define fput_atomic(x)	atomic_long_add_unless(&(x)->f_count, -1, 1)
 #define file_count(x)	atomic_long_read(&(x)->f_count)
 
 #ifdef CONFIG_DEBUG_WRITECOUNT
@@ -1497,7 +1498,7 @@
 	int (*open) (struct inode *, struct file *);
 	int (*flush) (struct file *, fl_owner_t id);
 	int (*release) (struct inode *, struct file *);
-	int (*fsync) (struct file *, struct dentry *, int datasync);
+	int (*fsync) (struct file *, int datasync);
 	int (*aio_fsync) (struct kiocb *, int datasync);
 	int (*fasync) (int, struct file *, int);
 	int (*lock) (struct file *, int, struct file_lock *);
@@ -2212,7 +2213,7 @@
 /* fs/block_dev.c */
 extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
 				unsigned long nr_segs, loff_t pos);
-extern int blkdev_fsync(struct file *filp, struct dentry *dentry, int datasync);
+extern int blkdev_fsync(struct file *filp, int datasync);
 
 /* fs/splice.c */
 extern ssize_t generic_file_splice_read(struct file *, loff_t *,
@@ -2228,6 +2229,7 @@
 
 extern void
 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
+extern loff_t noop_llseek(struct file *file, loff_t offset, int origin);
 extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
 extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
 extern loff_t generic_file_llseek_unlocked(struct file *file, loff_t offset,
@@ -2250,10 +2252,19 @@
 #endif
 
 #ifdef CONFIG_BLOCK
+struct bio;
+typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
+			    loff_t file_offset);
+void dio_end_io(struct bio *bio, int error);
+
+ssize_t __blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb, struct inode *inode,
+	struct block_device *bdev, const struct iovec *iov, loff_t offset,
+	unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
+	dio_submit_t submit_io, int lock_type);
 ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
 	struct block_device *bdev, const struct iovec *iov, loff_t offset,
 	unsigned long nr_segs, get_block_t get_block, dio_iodone_t end_io,
-	int lock_type);
+	dio_submit_t submit_io,	int lock_type);
 
 enum {
 	/* need locking between buffered and direct access */
@@ -2263,13 +2274,31 @@
 	DIO_SKIP_HOLES	= 0x02,
 };
 
+static inline ssize_t blockdev_direct_IO_newtrunc(int rw, struct kiocb *iocb,
+	struct inode *inode, struct block_device *bdev, const struct iovec *iov,
+	loff_t offset, unsigned long nr_segs, get_block_t get_block,
+	dio_iodone_t end_io)
+{
+	return __blockdev_direct_IO_newtrunc(rw, iocb, inode, bdev, iov, offset,
+				    nr_segs, get_block, end_io, NULL,
+				    DIO_LOCKING | DIO_SKIP_HOLES);
+}
+
+static inline ssize_t blockdev_direct_IO_no_locking_newtrunc(int rw, struct kiocb *iocb,
+	struct inode *inode, struct block_device *bdev, const struct iovec *iov,
+	loff_t offset, unsigned long nr_segs, get_block_t get_block,
+	dio_iodone_t end_io)
+{
+	return __blockdev_direct_IO_newtrunc(rw, iocb, inode, bdev, iov, offset,
+				nr_segs, get_block, end_io, NULL, 0);
+}
 static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
 	struct inode *inode, struct block_device *bdev, const struct iovec *iov,
 	loff_t offset, unsigned long nr_segs, get_block_t get_block,
 	dio_iodone_t end_io)
 {
 	return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
-				    nr_segs, get_block, end_io,
+				    nr_segs, get_block, end_io, NULL,
 				    DIO_LOCKING | DIO_SKIP_HOLES);
 }
 
@@ -2279,7 +2308,7 @@
 	dio_iodone_t end_io)
 {
 	return __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset,
-				nr_segs, get_block, end_io, 0);
+				    nr_segs, get_block, end_io, NULL, 0);
 }
 #endif
 
@@ -2335,13 +2364,15 @@
 extern int dcache_dir_close(struct inode *, struct file *);
 extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
 extern int dcache_readdir(struct file *, void *, filldir_t);
+extern int simple_setattr(struct dentry *, struct iattr *);
 extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 extern int simple_statfs(struct dentry *, struct kstatfs *);
 extern int simple_link(struct dentry *, struct inode *, struct dentry *);
 extern int simple_unlink(struct inode *, struct dentry *);
 extern int simple_rmdir(struct inode *, struct dentry *);
 extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
-extern int simple_sync_file(struct file *, struct dentry *, int);
+extern int simple_setsize(struct inode *, loff_t);
+extern int noop_fsync(struct file *, int);
 extern int simple_empty(struct dentry *);
 extern int simple_readpage(struct file *file, struct page *page);
 extern int simple_write_begin(struct file *file, struct address_space *mapping,
@@ -2366,7 +2397,7 @@
 extern ssize_t simple_write_to_buffer(void *to, size_t available, loff_t *ppos,
 		const void __user *from, size_t count);
 
-extern int simple_fsync(struct file *, struct dentry *, int);
+extern int generic_file_fsync(struct file *, int);
 
 #ifdef CONFIG_MIGRATION
 extern int buffer_migrate_page(struct address_space *,
@@ -2377,7 +2408,8 @@
 
 extern int inode_change_ok(const struct inode *, struct iattr *);
 extern int inode_newsize_ok(const struct inode *, loff_t offset);
-extern int __must_check inode_setattr(struct inode *, struct iattr *);
+extern int __must_check inode_setattr(struct inode *, const struct iattr *);
+extern void generic_setattr(struct inode *inode, const struct iattr *attr);
 
 extern void file_update_time(struct file *file);
 
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index c082f22..3167f2d 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -73,18 +73,25 @@
 };
 
 
+struct trace_event;
+
 typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
-					      int flags);
-struct trace_event {
-	struct hlist_node	node;
-	struct list_head	list;
-	int			type;
+				      int flags, struct trace_event *event);
+
+struct trace_event_functions {
 	trace_print_func	trace;
 	trace_print_func	raw;
 	trace_print_func	hex;
 	trace_print_func	binary;
 };
 
+struct trace_event {
+	struct hlist_node		node;
+	struct list_head		list;
+	int				type;
+	struct trace_event_functions	*funcs;
+};
+
 extern int register_ftrace_event(struct trace_event *event);
 extern int unregister_ftrace_event(struct trace_event *event);
 
@@ -116,28 +123,70 @@
 
 struct event_filter;
 
+enum trace_reg {
+	TRACE_REG_REGISTER,
+	TRACE_REG_UNREGISTER,
+	TRACE_REG_PERF_REGISTER,
+	TRACE_REG_PERF_UNREGISTER,
+};
+
+struct ftrace_event_call;
+
+struct ftrace_event_class {
+	char			*system;
+	void			*probe;
+#ifdef CONFIG_PERF_EVENTS
+	void			*perf_probe;
+#endif
+	int			(*reg)(struct ftrace_event_call *event,
+				       enum trace_reg type);
+	int			(*define_fields)(struct ftrace_event_call *);
+	struct list_head	*(*get_fields)(struct ftrace_event_call *);
+	struct list_head	fields;
+	int			(*raw_init)(struct ftrace_event_call *);
+};
+
+enum {
+	TRACE_EVENT_FL_ENABLED_BIT,
+	TRACE_EVENT_FL_FILTERED_BIT,
+};
+
+enum {
+	TRACE_EVENT_FL_ENABLED	= (1 << TRACE_EVENT_FL_ENABLED_BIT),
+	TRACE_EVENT_FL_FILTERED	= (1 << TRACE_EVENT_FL_FILTERED_BIT),
+};
+
 struct ftrace_event_call {
 	struct list_head	list;
+	struct ftrace_event_class *class;
 	char			*name;
-	char			*system;
 	struct dentry		*dir;
-	struct trace_event	*event;
-	int			enabled;
-	int			(*regfunc)(struct ftrace_event_call *);
-	void			(*unregfunc)(struct ftrace_event_call *);
-	int			id;
+	struct trace_event	event;
 	const char		*print_fmt;
-	int			(*raw_init)(struct ftrace_event_call *);
-	int			(*define_fields)(struct ftrace_event_call *);
-	struct list_head	fields;
-	int			filter_active;
 	struct event_filter	*filter;
 	void			*mod;
 	void			*data;
 
+	/*
+	 * 32 bit flags:
+	 *   bit 1:		enabled
+	 *   bit 2:		filter_active
+	 *
+	 * Changes to flags must hold the event_mutex.
+	 *
+	 * Note: Reads of flags do not hold the event_mutex since
+	 * they occur in critical sections. But the way flags
+	 * is currently used, these changes do no affect the code
+	 * except that when a change is made, it may have a slight
+	 * delay in propagating the changes to other CPUs due to
+	 * caching and such.
+	 */
+	unsigned int		flags;
+
+#ifdef CONFIG_PERF_EVENTS
 	int			perf_refcount;
-	int			(*perf_event_enable)(struct ftrace_event_call *);
-	void			(*perf_event_disable)(struct ftrace_event_call *);
+	struct hlist_head	*perf_events;
+#endif
 };
 
 #define PERF_MAX_TRACE_SIZE	2048
@@ -194,24 +243,22 @@
 
 DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
 
-extern int perf_trace_enable(int event_id);
-extern void perf_trace_disable(int event_id);
-extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
+extern int  perf_trace_init(struct perf_event *event);
+extern void perf_trace_destroy(struct perf_event *event);
+extern int  perf_trace_enable(struct perf_event *event);
+extern void perf_trace_disable(struct perf_event *event);
+extern int  ftrace_profile_set_filter(struct perf_event *event, int event_id,
 				     char *filter_str);
 extern void ftrace_profile_free_filter(struct perf_event *event);
-extern void *
-perf_trace_buf_prepare(int size, unsigned short type, int *rctxp,
-			 unsigned long *irq_flags);
+extern void *perf_trace_buf_prepare(int size, unsigned short type,
+				    struct pt_regs *regs, int *rctxp);
 
 static inline void
 perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr,
-		       u64 count, unsigned long irq_flags, struct pt_regs *regs)
+		       u64 count, struct pt_regs *regs, void *head)
 {
-	struct trace_entry *entry = raw_data;
-
-	perf_tp_event(entry->type, addr, count, raw_data, size, regs);
+	perf_tp_event(addr, count, raw_data, size, regs, head);
 	perf_swevent_put_recursion_context(rctx);
-	local_irq_restore(irq_flags);
 }
 #endif
 
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 4e949a5..03f616b 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -51,6 +51,11 @@
 	return -ENOSYS;
 }
 
+static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
+{
+	return -ENOSYS;
+}
+
 static inline int gpio_get_value(unsigned gpio)
 {
 	/* GPIO can never have been requested or set as {in,out}put */
diff --git a/include/linux/i2c/adp8860.h b/include/linux/i2c/adp8860.h
new file mode 100644
index 0000000..0b4d398
--- /dev/null
+++ b/include/linux/i2c/adp8860.h
@@ -0,0 +1,154 @@
+/*
+ * Definitions and platform data for Analog Devices
+ * Backlight drivers ADP8860
+ *
+ * Copyright 2009-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __LINUX_I2C_ADP8860_H
+#define __LINUX_I2C_ADP8860_H
+
+#include <linux/leds.h>
+#include <linux/types.h>
+
+#define ID_ADP8860		8860
+
+#define ADP8860_MAX_BRIGHTNESS	0x7F
+#define FLAG_OFFT_SHIFT 8
+
+/*
+ * LEDs subdevice platform data
+ */
+
+#define ADP8860_LED_DIS_BLINK	(0 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_600ms	(1 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_1200ms	(2 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_1800ms	(3 << FLAG_OFFT_SHIFT)
+
+#define ADP8860_LED_ONT_200ms	0
+#define ADP8860_LED_ONT_600ms	1
+#define ADP8860_LED_ONT_800ms	2
+#define ADP8860_LED_ONT_1200ms	3
+
+#define ADP8860_LED_D7		(7)
+#define ADP8860_LED_D6		(6)
+#define ADP8860_LED_D5		(5)
+#define ADP8860_LED_D4		(4)
+#define ADP8860_LED_D3		(3)
+#define ADP8860_LED_D2		(2)
+#define ADP8860_LED_D1		(1)
+
+/*
+ * Backlight subdevice platform data
+ */
+
+#define ADP8860_BL_D7		(1 << 6)
+#define ADP8860_BL_D6		(1 << 5)
+#define ADP8860_BL_D5		(1 << 4)
+#define ADP8860_BL_D4		(1 << 3)
+#define ADP8860_BL_D3		(1 << 2)
+#define ADP8860_BL_D2		(1 << 1)
+#define ADP8860_BL_D1		(1 << 0)
+
+#define ADP8860_FADE_T_DIS	0	/* Fade Timer Disabled */
+#define ADP8860_FADE_T_300ms	1	/* 0.3 Sec */
+#define ADP8860_FADE_T_600ms	2
+#define ADP8860_FADE_T_900ms	3
+#define ADP8860_FADE_T_1200ms	4
+#define ADP8860_FADE_T_1500ms	5
+#define ADP8860_FADE_T_1800ms	6
+#define ADP8860_FADE_T_2100ms	7
+#define ADP8860_FADE_T_2400ms	8
+#define ADP8860_FADE_T_2700ms	9
+#define ADP8860_FADE_T_3000ms	10
+#define ADP8860_FADE_T_3500ms	11
+#define ADP8860_FADE_T_4000ms	12
+#define ADP8860_FADE_T_4500ms	13
+#define ADP8860_FADE_T_5000ms	14
+#define ADP8860_FADE_T_5500ms	15	/* 5.5 Sec */
+
+#define ADP8860_FADE_LAW_LINEAR	0
+#define ADP8860_FADE_LAW_SQUARE	1
+#define ADP8860_FADE_LAW_CUBIC1	2
+#define ADP8860_FADE_LAW_CUBIC2	3
+
+#define ADP8860_BL_AMBL_FILT_80ms	0	/* Light sensor filter time */
+#define ADP8860_BL_AMBL_FILT_160ms	1
+#define ADP8860_BL_AMBL_FILT_320ms	2
+#define ADP8860_BL_AMBL_FILT_640ms	3
+#define ADP8860_BL_AMBL_FILT_1280ms	4
+#define ADP8860_BL_AMBL_FILT_2560ms	5
+#define ADP8860_BL_AMBL_FILT_5120ms	6
+#define ADP8860_BL_AMBL_FILT_10240ms	7	/* 10.24 sec */
+
+/*
+ * Blacklight current 0..30mA
+ */
+#define ADP8860_BL_CUR_mA(I)		((I * 127) / 30)
+
+/*
+ * L2 comparator current 0..1106uA
+ */
+#define ADP8860_L2_COMP_CURR_uA(I)	((I * 255) / 1106)
+
+/*
+ * L3 comparator current 0..138uA
+ */
+#define ADP8860_L3_COMP_CURR_uA(I)	((I * 255) / 138)
+
+struct adp8860_backlight_platform_data {
+	u8 bl_led_assign;	/* 1 = Backlight 0 = Individual LED */
+
+	u8 bl_fade_in;		/* Backlight Fade-In Timer */
+	u8 bl_fade_out;		/* Backlight Fade-Out Timer */
+	u8 bl_fade_law;		/* fade-on/fade-off transfer characteristic */
+
+	u8 en_ambl_sens;	/* 1 = enable ambient light sensor */
+	u8 abml_filt;		/* Light sensor filter time */
+
+	u8 l1_daylight_max;	/* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l1_daylight_dim;	/* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l2_office_max;	/* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l2_office_dim;	/* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l3_dark_max;		/* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l3_dark_dim;		/* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+
+	u8 l2_trip;		/* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+	u8 l2_hyst;		/* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+	u8 l3_trip;		/* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+	u8 l3_hyst;		/* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+
+	/**
+	 * Independent Current Sinks / LEDS
+	 * Sinks not assigned to the Backlight can be exposed to
+	 * user space using the LEDS CLASS interface
+	 */
+
+	int num_leds;
+	struct led_info	*leds;
+	u8 led_fade_in;		/* LED Fade-In Timer */
+	u8 led_fade_out;	/* LED Fade-Out Timer */
+	u8 led_fade_law;	/* fade-on/fade-off transfer characteristic */
+	u8 led_on_time;
+
+	/**
+	 * Gain down disable. Setting this option does not allow the
+	 * charge pump to switch to lower gains. NOT AVAILABLE on ADP8860
+	 * 1 = the charge pump doesn't switch down in gain until all LEDs are 0.
+	 *  The charge pump switches up in gain as needed. This feature is
+	 *  useful if the ADP8863 charge pump is used to drive an external load.
+	 *  This feature must be used when utilizing small fly capacitors
+	 *  (0402 or smaller).
+	 * 0 = the charge pump automatically switches up and down in gain.
+	 *  This provides optimal efficiency, but is not suitable for driving
+	 *  loads that are not connected through the ADP8863 diode drivers.
+	 *  Additionally, the charge pump fly capacitors should be low ESR
+	 * and sized 0603 or greater.
+	 */
+
+	u8 gdwn_dis;
+};
+
+#endif /* __LINUX_I2C_ADP8860_H */
diff --git a/include/linux/i2c/max732x.h b/include/linux/i2c/max732x.h
index e103366..c04bac8 100644
--- a/include/linux/i2c/max732x.h
+++ b/include/linux/i2c/max732x.h
@@ -7,6 +7,9 @@
 	/* number of the first GPIO */
 	unsigned	gpio_base;
 
+	/* interrupt base */
+	int		irq_base;
+
 	void		*context;	/* param to setup/teardown */
 
 	int		(*setup)(struct i2c_client *client,
diff --git a/include/linux/i2c/pca953x.h b/include/linux/i2c/pca953x.h
index d5c5a60..139ba52 100644
--- a/include/linux/i2c/pca953x.h
+++ b/include/linux/i2c/pca953x.h
@@ -24,7 +24,7 @@
 	int		(*teardown)(struct i2c_client *client,
 				unsigned gpio, unsigned ngpio,
 				void *context);
-	char		**names;
+	const char	*const *names;
 };
 
 #endif /* _LINUX_PCA953X_H */
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 7996fc2..2beaa13 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -16,7 +16,7 @@
 extern struct fs_struct init_fs;
 
 #define INIT_SIGNALS(sig) {						\
-	.count		= ATOMIC_INIT(1), 				\
+	.nr_threads	= 1,						\
 	.wait_chldexit	= __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
 	.shared_pending	= { 						\
 		.list = LIST_HEAD_INIT(sig.shared_pending.list),	\
@@ -35,7 +35,7 @@
 
 #define INIT_SIGHAND(sighand) {						\
 	.count		= ATOMIC_INIT(1), 				\
-	.action		= { { { .sa_handler = NULL, } }, },		\
+	.action		= { { { .sa_handler = SIG_DFL, } }, },		\
 	.siglock	= __SPIN_LOCK_UNLOCKED(sighand.siglock),	\
 	.signalfd_wqh	= __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh),	\
 }
@@ -45,9 +45,9 @@
 #define INIT_STRUCT_PID {						\
 	.count 		= ATOMIC_INIT(1),				\
 	.tasks		= {						\
-		{ .first = &init_task.pids[PIDTYPE_PID].node },		\
-		{ .first = &init_task.pids[PIDTYPE_PGID].node },	\
-		{ .first = &init_task.pids[PIDTYPE_SID].node },		\
+		{ .first = NULL },					\
+		{ .first = NULL },					\
+		{ .first = NULL },					\
 	},								\
 	.level		= 0,						\
 	.numbers	= { {						\
@@ -61,7 +61,7 @@
 {								\
 	.node = {						\
 		.next = NULL,					\
-		.pprev = &init_struct_pid.tasks[type].first,	\
+		.pprev = NULL,					\
 	},							\
 	.pid = &init_struct_pid,				\
 }
@@ -163,6 +163,7 @@
 		[PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID),		\
 		[PIDTYPE_SID]  = INIT_PID_LINK(PIDTYPE_SID),		\
 	},								\
+	.thread_group	= LIST_HEAD_INIT(tsk.thread_group),		\
 	.dirties = INIT_PROP_LOCAL_SINGLE(dirties),			\
 	INIT_IDS							\
 	INIT_PERF_EVENTS(tsk)						\
diff --git a/include/linux/input.h b/include/linux/input.h
index 83524e4..6fcc9101 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1155,7 +1155,7 @@
 
 	int sync;
 
-	int abs[ABS_MAX + 1];
+	int abs[ABS_CNT];
 	int rep[REP_MAX + 1];
 
 	unsigned long key[BITS_TO_LONGS(KEY_CNT)];
@@ -1163,11 +1163,11 @@
 	unsigned long snd[BITS_TO_LONGS(SND_CNT)];
 	unsigned long sw[BITS_TO_LONGS(SW_CNT)];
 
-	int absmax[ABS_MAX + 1];
-	int absmin[ABS_MAX + 1];
-	int absfuzz[ABS_MAX + 1];
-	int absflat[ABS_MAX + 1];
-	int absres[ABS_MAX + 1];
+	int absmax[ABS_CNT];
+	int absmin[ABS_CNT];
+	int absfuzz[ABS_CNT];
+	int absflat[ABS_CNT];
+	int absres[ABS_CNT];
 
 	int (*open)(struct input_dev *dev);
 	void (*close)(struct input_dev *dev);
diff --git a/include/linux/joystick.h b/include/linux/joystick.h
index 9e20c29..47199b1 100644
--- a/include/linux/joystick.h
+++ b/include/linux/joystick.h
@@ -64,8 +64,8 @@
 #define JSIOCSCORR		_IOW('j', 0x21, struct js_corr)			/* set correction values */
 #define JSIOCGCORR		_IOR('j', 0x22, struct js_corr)			/* get correction values */
 
-#define JSIOCSAXMAP		_IOW('j', 0x31, __u8[ABS_MAX + 1])		/* set axis mapping */
-#define JSIOCGAXMAP		_IOR('j', 0x32, __u8[ABS_MAX + 1])		/* get axis mapping */
+#define JSIOCSAXMAP		_IOW('j', 0x31, __u8[ABS_CNT])			/* set axis mapping */
+#define JSIOCGAXMAP		_IOR('j', 0x32, __u8[ABS_CNT])			/* get axis mapping */
 #define JSIOCSBTNMAP		_IOW('j', 0x33, __u16[KEY_MAX - BTN_MISC + 1])	/* set button mapping */
 #define JSIOCGBTNMAP		_IOR('j', 0x34, __u16[KEY_MAX - BTN_MISC + 1])	/* get button mapping */
 
diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index facb27f..6efd7a7 100644
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -23,6 +23,7 @@
 #include <linux/stddef.h>
 #include <linux/errno.h>
 #include <linux/compiler.h>
+#include <linux/workqueue.h>
 
 #define KMOD_PATH_LEN 256
 
@@ -45,19 +46,6 @@
 
 struct key;
 struct file;
-struct subprocess_info;
-
-/* Allocate a subprocess_info structure */
-struct subprocess_info *call_usermodehelper_setup(char *path, char **argv,
-						  char **envp, gfp_t gfp_mask);
-
-/* Set various pieces of state into the subprocess_info structure */
-void call_usermodehelper_setkeys(struct subprocess_info *info,
-				 struct key *session_keyring);
-int call_usermodehelper_stdinpipe(struct subprocess_info *sub_info,
-				  struct file **filp);
-void call_usermodehelper_setcleanup(struct subprocess_info *info,
-				    void (*cleanup)(char **argv, char **envp));
 
 enum umh_wait {
 	UMH_NO_WAIT = -1,	/* don't wait at all */
@@ -65,6 +53,29 @@
 	UMH_WAIT_PROC = 1,	/* wait for the process to complete */
 };
 
+struct subprocess_info {
+	struct work_struct work;
+	struct completion *complete;
+	char *path;
+	char **argv;
+	char **envp;
+	enum umh_wait wait;
+	int retval;
+	int (*init)(struct subprocess_info *info);
+	void (*cleanup)(struct subprocess_info *info);
+	void *data;
+};
+
+/* Allocate a subprocess_info structure */
+struct subprocess_info *call_usermodehelper_setup(char *path, char **argv,
+						  char **envp, gfp_t gfp_mask);
+
+/* Set various pieces of state into the subprocess_info structure */
+void call_usermodehelper_setfns(struct subprocess_info *info,
+		    int (*init)(struct subprocess_info *info),
+		    void (*cleanup)(struct subprocess_info *info),
+		    void *data);
+
 /* Actually execute the sub-process */
 int call_usermodehelper_exec(struct subprocess_info *info, enum umh_wait wait);
 
@@ -73,38 +84,33 @@
 void call_usermodehelper_freeinfo(struct subprocess_info *info);
 
 static inline int
-call_usermodehelper(char *path, char **argv, char **envp, enum umh_wait wait)
+call_usermodehelper_fns(char *path, char **argv, char **envp,
+			enum umh_wait wait,
+			int (*init)(struct subprocess_info *info),
+			void (*cleanup)(struct subprocess_info *), void *data)
 {
 	struct subprocess_info *info;
 	gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
 
 	info = call_usermodehelper_setup(path, argv, envp, gfp_mask);
+
 	if (info == NULL)
 		return -ENOMEM;
+
+	call_usermodehelper_setfns(info, init, cleanup, data);
+
 	return call_usermodehelper_exec(info, wait);
 }
 
 static inline int
-call_usermodehelper_keys(char *path, char **argv, char **envp,
-			 struct key *session_keyring, enum umh_wait wait)
+call_usermodehelper(char *path, char **argv, char **envp, enum umh_wait wait)
 {
-	struct subprocess_info *info;
-	gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
-
-	info = call_usermodehelper_setup(path, argv, envp, gfp_mask);
-	if (info == NULL)
-		return -ENOMEM;
-
-	call_usermodehelper_setkeys(info, session_keyring);
-	return call_usermodehelper_exec(info, wait);
+	return call_usermodehelper_fns(path, argv, envp, wait,
+				       NULL, NULL, NULL);
 }
 
 extern void usermodehelper_init(void);
 
-struct file;
-extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[],
-				    struct file **filp);
-
 extern int usermodehelper_disable(void);
 extern void usermodehelper_enable(void);
 
diff --git a/include/linux/lcd.h b/include/linux/lcd.h
index c67feca..8877123 100644
--- a/include/linux/lcd.h
+++ b/include/linux/lcd.h
@@ -69,6 +69,29 @@
 	struct device dev;
 };
 
+struct lcd_platform_data {
+	/* reset lcd panel device. */
+	int (*reset)(struct lcd_device *ld);
+	/* on or off to lcd panel. if 'enable' is 0 then
+	   lcd power off and 1, lcd power on. */
+	int (*power_on)(struct lcd_device *ld, int enable);
+
+	/* it indicates whether lcd panel was enabled
+	   from bootloader or not. */
+	int lcd_enabled;
+	/* it means delay for stable time when it becomes low to high
+	   or high to low that is dependent on whether reset gpio is
+	   low active or high active. */
+	unsigned int reset_delay;
+	/* stable time needing to become lcd power on. */
+	unsigned int power_on_delay;
+	/* stable time needing to become lcd power off. */
+	unsigned int power_off_delay;
+
+	/* it could be used for any purpose. */
+	void *pdata;
+};
+
 static inline void lcd_set_power(struct lcd_device *ld, int power)
 {
 	mutex_lock(&ld->update_lock);
diff --git a/include/linux/leds.h b/include/linux/leds.h
index d8bf966..ba6986a 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -149,14 +149,18 @@
 	unsigned	default_state : 2;
 	/* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */
 };
-#define LEDS_GPIO_DEFSTATE_OFF	0
-#define LEDS_GPIO_DEFSTATE_ON	1
-#define LEDS_GPIO_DEFSTATE_KEEP	2
+#define LEDS_GPIO_DEFSTATE_OFF		0
+#define LEDS_GPIO_DEFSTATE_ON		1
+#define LEDS_GPIO_DEFSTATE_KEEP		2
 
 struct gpio_led_platform_data {
 	int 		num_leds;
 	struct gpio_led *leds;
-	int		(*gpio_blink_set)(unsigned gpio,
+
+#define GPIO_LED_NO_BLINK_LOW	0	/* No blink GPIO state low */
+#define GPIO_LED_NO_BLINK_HIGH	1	/* No blink GPIO state high */
+#define GPIO_LED_BLINK		2	/* Plase, blink */
+	int		(*gpio_blink_set)(unsigned gpio, int state,
 					unsigned long *delay_on,
 					unsigned long *delay_off);
 };
diff --git a/include/linux/libata.h b/include/linux/libata.h
index ee84e7e..3bad270 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -386,6 +386,7 @@
 	ATA_HORKAGE_1_5_GBPS	= (1 << 13),	/* force 1.5 Gbps */
 	ATA_HORKAGE_NOSETXFER	= (1 << 14),	/* skip SETXFER, SATA only */
 	ATA_HORKAGE_BROKEN_FPDMA_AA	= (1 << 15),	/* skip AA */
+	ATA_HORKAGE_DUMP_ID	= (1 << 16),	/* dump IDENTIFY data */
 
 	 /* DMA mask for user DMA control: User visible values; DO NOT
 	    renumber */
@@ -513,7 +514,9 @@
 	void __iomem		*command_addr;
 	void __iomem		*altstatus_addr;
 	void __iomem		*ctl_addr;
+#ifdef CONFIG_ATA_BMDMA
 	void __iomem		*bmdma_addr;
+#endif /* CONFIG_ATA_BMDMA */
 	void __iomem		*scr_addr;
 };
 #endif /* CONFIG_ATA_SFF */
@@ -721,8 +724,10 @@
 	u8			ctl;	/* cache of ATA control register */
 	u8			last_ctl;	/* Cache last written value */
 	struct delayed_work	sff_pio_task;
+#ifdef CONFIG_ATA_BMDMA
 	struct ata_bmdma_prd	*bmdma_prd;	/* BMDMA SG list */
 	dma_addr_t		bmdma_prd_dma;	/* and its DMA mapping */
+#endif /* CONFIG_ATA_BMDMA */
 #endif /* CONFIG_ATA_SFF */
 
 	unsigned int		pio_mask;
@@ -856,10 +861,12 @@
 	void (*sff_irq_clear)(struct ata_port *);
 	void (*sff_drain_fifo)(struct ata_queued_cmd *qc);
 
+#ifdef CONFIG_ATA_BMDMA
 	void (*bmdma_setup)(struct ata_queued_cmd *qc);
 	void (*bmdma_start)(struct ata_queued_cmd *qc);
 	void (*bmdma_stop)(struct ata_queued_cmd *qc);
 	u8   (*bmdma_status)(struct ata_port *ap);
+#endif /* CONFIG_ATA_BMDMA */
 #endif /* CONFIG_ATA_SFF */
 
 	ssize_t (*em_show)(struct ata_port *ap, char *buf);
@@ -1555,7 +1562,6 @@
 #ifdef CONFIG_ATA_SFF
 
 extern const struct ata_port_operations ata_sff_port_ops;
-extern const struct ata_port_operations ata_bmdma_port_ops;
 extern const struct ata_port_operations ata_bmdma32_port_ops;
 
 /* PIO only, sg_tablesize and dma_boundary limits can be removed */
@@ -1564,11 +1570,6 @@
 	.sg_tablesize		= LIBATA_MAX_PRD,		\
 	.dma_boundary		= ATA_DMA_BOUNDARY
 
-#define ATA_BMDMA_SHT(drv_name)					\
-	ATA_BASE_SHT(drv_name),					\
-	.sg_tablesize		= LIBATA_MAX_PRD,		\
-	.dma_boundary		= ATA_DMA_BOUNDARY
-
 extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
 extern u8 ata_sff_check_status(struct ata_port *ap);
 extern void ata_sff_pause(struct ata_port *ap);
@@ -1593,7 +1594,7 @@
 extern void ata_sff_queue_pio_task(struct ata_port *ap, unsigned long delay);
 extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
 extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
-extern unsigned int ata_sff_host_intr(struct ata_port *ap,
+extern unsigned int ata_sff_port_intr(struct ata_port *ap,
 				      struct ata_queued_cmd *qc);
 extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
 extern void ata_sff_lost_interrupt(struct ata_port *ap);
@@ -1625,11 +1626,24 @@
 		struct scsi_host_template *sht, void *host_priv, int hflags);
 #endif /* CONFIG_PCI */
 
+#ifdef CONFIG_ATA_BMDMA
+
+extern const struct ata_port_operations ata_bmdma_port_ops;
+
+#define ATA_BMDMA_SHT(drv_name)					\
+	ATA_BASE_SHT(drv_name),					\
+	.sg_tablesize		= LIBATA_MAX_PRD,		\
+	.dma_boundary		= ATA_DMA_BOUNDARY
+
 extern void ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
 extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
 extern void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
+extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
+				      struct ata_queued_cmd *qc);
+extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
 extern void ata_bmdma_error_handler(struct ata_port *ap);
 extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
+extern void ata_bmdma_irq_clear(struct ata_port *ap);
 extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
 extern void ata_bmdma_start(struct ata_queued_cmd *qc);
 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
@@ -1640,7 +1654,15 @@
 #ifdef CONFIG_PCI
 extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
 extern void ata_pci_bmdma_init(struct ata_host *host);
+extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
+				      const struct ata_port_info * const * ppi,
+				      struct ata_host **r_host);
+extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
+				  const struct ata_port_info * const * ppi,
+				  struct scsi_host_template *sht,
+				  void *host_priv, int hflags);
 #endif /* CONFIG_PCI */
+#endif /* CONFIG_ATA_BMDMA */
 
 /**
  *	ata_sff_busy_wait - Wait for a port status register
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 0589479..9411d32 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -90,7 +90,8 @@
 extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem);
 
 extern int
-mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr);
+mem_cgroup_prepare_migration(struct page *page,
+	struct page *newpage, struct mem_cgroup **ptr);
 extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
 	struct page *oldpage, struct page *newpage);
 
@@ -227,7 +228,8 @@
 }
 
 static inline int
-mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr)
+mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
+	struct mem_cgroup **ptr)
 {
 	return 0;
 }
diff --git a/include/linux/mfd/mc13783.h b/include/linux/mfd/mc13783.h
index 8895d9d..4a894f6 100644
--- a/include/linux/mfd/mc13783.h
+++ b/include/linux/mfd/mc13783.h
@@ -64,6 +64,70 @@
 					MC13783_ADC0_TSMOD1 | \
 					MC13783_ADC0_TSMOD2)
 
+struct mc13783_led_platform_data {
+#define MC13783_LED_MD		0
+#define MC13783_LED_AD		1
+#define MC13783_LED_KP		2
+#define MC13783_LED_R1		3
+#define MC13783_LED_G1		4
+#define MC13783_LED_B1		5
+#define MC13783_LED_R2		6
+#define MC13783_LED_G2		7
+#define MC13783_LED_B2		8
+#define MC13783_LED_R3		9
+#define MC13783_LED_G3		10
+#define MC13783_LED_B3		11
+#define MC13783_LED_MAX MC13783_LED_B3
+	int id;
+	const char *name;
+	const char *default_trigger;
+
+/* Three or two bits current selection depending on the led */
+	char max_current;
+};
+
+struct mc13783_leds_platform_data {
+	int num_leds;
+	struct mc13783_led_platform_data *led;
+
+#define MC13783_LED_TRIODE_MD	(1 << 0)
+#define MC13783_LED_TRIODE_AD	(1 << 1)
+#define MC13783_LED_TRIODE_KP	(1 << 2)
+#define MC13783_LED_BOOST_EN	(1 << 3)
+#define MC13783_LED_TC1HALF	(1 << 4)
+#define MC13783_LED_SLEWLIMTC	(1 << 5)
+#define MC13783_LED_SLEWLIMBL	(1 << 6)
+#define MC13783_LED_TRIODE_TC1	(1 << 7)
+#define MC13783_LED_TRIODE_TC2	(1 << 8)
+#define MC13783_LED_TRIODE_TC3	(1 << 9)
+	int flags;
+
+#define MC13783_LED_AB_DISABLED		0
+#define MC13783_LED_AB_MD1		1
+#define MC13783_LED_AB_MD12		2
+#define MC13783_LED_AB_MD123		3
+#define MC13783_LED_AB_MD1234		4
+#define MC13783_LED_AB_MD1234_AD1	5
+#define MC13783_LED_AB_MD1234_AD12	6
+#define MC13783_LED_AB_MD1_AD		7
+	char abmode;
+
+#define MC13783_LED_ABREF_200MV	0
+#define MC13783_LED_ABREF_400MV	1
+#define MC13783_LED_ABREF_600MV	2
+#define MC13783_LED_ABREF_800MV	3
+	char abref;
+
+#define MC13783_LED_PERIOD_10MS		0
+#define MC13783_LED_PERIOD_100MS	1
+#define MC13783_LED_PERIOD_500MS	2
+#define MC13783_LED_PERIOD_2S		3
+	char bl_period;
+	char tc1_period;
+	char tc2_period;
+	char tc3_period;
+};
+
 /* to be cleaned up */
 struct regulator_init_data;
 
@@ -80,12 +144,14 @@
 struct mc13783_platform_data {
 	int num_regulators;
 	struct mc13783_regulator_init_data *regulators;
+	struct mc13783_leds_platform_data *leds;
 
 #define MC13783_USE_TOUCHSCREEN (1 << 0)
 #define MC13783_USE_CODEC	(1 << 1)
 #define MC13783_USE_ADC		(1 << 2)
 #define MC13783_USE_RTC		(1 << 3)
 #define MC13783_USE_REGULATOR	(1 << 4)
+#define MC13783_USE_LED		(1 << 5)
 	unsigned int flags;
 };
 
diff --git a/include/linux/mfd/pcf50633/backlight.h b/include/linux/mfd/pcf50633/backlight.h
new file mode 100644
index 0000000..83747e2
--- /dev/null
+++ b/include/linux/mfd/pcf50633/backlight.h
@@ -0,0 +1,51 @@
+/*
+ *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
+ *      PCF50633 backlight device driver
+ *
+ *  This program is free software; you can redistribute	 it and/or modify it
+ *  under  the terms of	 the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __LINUX_MFD_PCF50633_BACKLIGHT
+#define __LINUX_MFD_PCF50633_BACKLIGHT
+
+/*
+* @default_brightness: Backlight brightness is initialized to this value
+*
+* Brightness to be used after the driver has been probed.
+* Valid range 0-63.
+*
+* @default_brightness_limit: The actual brightness is limited by this value
+*
+* Brightness limit to be used after the driver has been probed. This is useful
+* when it is not known how much power is available for the backlight during
+* probe.
+* Valid range 0-63. Can be changed later with pcf50633_bl_set_brightness_limit.
+*
+* @ramp_time: Display ramp time when changing brightness
+*
+* When changing the backlights brightness the change is not instant, instead
+* it fades smooth from one state to another. This value specifies how long
+* the fade should take. The lower the value the higher the fade time.
+* Valid range 0-255
+*/
+struct pcf50633_bl_platform_data {
+	unsigned int	default_brightness;
+	unsigned int	default_brightness_limit;
+	uint8_t		ramp_time;
+};
+
+
+struct pcf50633;
+
+int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit);
+
+#endif
+
diff --git a/include/linux/mfd/pcf50633/core.h b/include/linux/mfd/pcf50633/core.h
index 3398bd9..ad411a7 100644
--- a/include/linux/mfd/pcf50633/core.h
+++ b/include/linux/mfd/pcf50633/core.h
@@ -18,6 +18,7 @@
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/power_supply.h>
+#include <linux/mfd/pcf50633/backlight.h>
 
 struct pcf50633;
 
@@ -43,6 +44,8 @@
 	void (*force_shutdown)(struct pcf50633 *);
 
 	u8 resumers[5];
+
+	struct pcf50633_bl_platform_data *backlight_data;
 };
 
 struct pcf50633_irq {
@@ -152,6 +155,7 @@
 	struct platform_device *mbc_pdev;
 	struct platform_device *adc_pdev;
 	struct platform_device *input_pdev;
+	struct platform_device *bl_pdev;
 	struct platform_device *regulator_pdev[PCF50633_NUM_REGULATORS];
 };
 
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 8b5f7cc..b631c46 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -31,6 +31,8 @@
 #define FUSE_MINOR		229
 #define KVM_MINOR		232
 #define VHOST_NET_MINOR		233
+#define BTRFS_MINOR		234
+#define AUTOFS_MINOR		235
 #define MISC_DYNAMIC_MINOR	255
 
 struct device;
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 3196c84..f65913c 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -230,7 +230,7 @@
 #define mmc_classdev(x)	(&(x)->class_dev)
 #define mmc_hostname(x)	(dev_name(&(x)->class_dev))
 
-extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
+extern int mmc_suspend_host(struct mmc_host *);
 extern int mmc_resume_host(struct mmc_host *);
 
 extern void mmc_power_save_host(struct mmc_host *host);
diff --git a/include/linux/mmc/sdhci-spear.h b/include/linux/mmc/sdhci-spear.h
new file mode 100644
index 0000000..9188c97
--- /dev/null
+++ b/include/linux/mmc/sdhci-spear.h
@@ -0,0 +1,42 @@
+/*
+ * include/linux/mmc/sdhci-spear.h
+ *
+ * SDHCI declarations specific to ST SPEAr platform
+ *
+ * Copyright (C) 2010 ST Microelectronics
+ * Viresh Kumar<viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef MMC_SDHCI_SPEAR_H
+#define MMC_SDHCI_SPEAR_H
+
+#include <linux/platform_device.h>
+/*
+ * struct sdhci_plat_data: spear sdhci platform data structure
+ *
+ * @card_power_gpio: gpio pin for enabling/disabling power to sdhci socket
+ * @power_active_high: if set, enable power to sdhci socket by setting
+ *			card_power_gpio
+ * @power_always_enb: If set, then enable power on probe, otherwise enable only
+ *			on card insertion and disable on card removal.
+ * card_int_gpio: gpio pin used for card detection
+ */
+struct sdhci_plat_data {
+	int card_power_gpio;
+	int power_active_high;
+	int power_always_enb;
+	int card_int_gpio;
+};
+
+/* This function is used to set platform_data field of pdev->dev */
+static inline void
+sdhci_set_plat_data(struct platform_device *pdev, struct sdhci_plat_data *data)
+{
+	pdev->dev.platform_data = data;
+}
+
+#endif /* MMC_SDHCI_SPEAR_H */
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index c6c0cce..31baaf8 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -145,6 +145,9 @@
 extern void sdio_writel(struct sdio_func *func, u32 b,
 	unsigned int addr, int *err_ret);
 
+extern u8 sdio_writeb_readb(struct sdio_func *func, u8 write_byte,
+	unsigned int addr, int *err_ret);
+
 extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
 	void *src, int count);
 extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h
new file mode 100644
index 0000000..aafe832
--- /dev/null
+++ b/include/linux/mmc/sh_mmcif.h
@@ -0,0 +1,39 @@
+/*
+ * include/linux/mmc/sh_mmcif.h
+ *
+ * platform data for eMMC driver
+ *
+ * Copyright (C) 2010 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ */
+
+#ifndef __SH_MMCIF_H__
+#define __SH_MMCIF_H__
+
+/*
+ * MMCIF : CE_CLK_CTRL [19:16]
+ * 1000 : Peripheral clock / 512
+ * 0111 : Peripheral clock / 256
+ * 0110 : Peripheral clock / 128
+ * 0101 : Peripheral clock / 64
+ * 0100 : Peripheral clock / 32
+ * 0011 : Peripheral clock / 16
+ * 0010 : Peripheral clock / 8
+ * 0001 : Peripheral clock / 4
+ * 0000 : Peripheral clock / 2
+ * 1111 : Peripheral clock (sup_pclk set '1')
+ */
+
+struct sh_mmcif_plat_data {
+	void (*set_pwr)(struct platform_device *pdev, int state);
+	void (*down_pwr)(struct platform_device *pdev);
+	u8	sup_pclk;	/* 1 :SH7757, 0: SH7724/SH7372 */
+	unsigned long caps;
+	u32	ocr;
+};
+
+#endif /* __SH_MMCIF_H__ */
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 0fa4913..b4d109e 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -671,6 +671,12 @@
 static inline void memory_present(int nid, unsigned long start, unsigned long end) {}
 #endif
 
+#ifdef CONFIG_HAVE_MEMORYLESS_NODES
+int local_memory_node(int node_id);
+#else
+static inline int local_memory_node(int node_id) { return node_id; };
+#endif
+
 #ifdef CONFIG_NEED_NODE_MEMMAP_SIZE
 unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long);
 #endif
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a1bff65..40291f3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1407,17 +1407,25 @@
 	struct softnet_data	*rps_ipi_next;
 	unsigned int		cpu;
 	unsigned int		input_queue_head;
+	unsigned int		input_queue_tail;
 #endif
 	unsigned		dropped;
 	struct sk_buff_head	input_pkt_queue;
 	struct napi_struct	backlog;
 };
 
-static inline void input_queue_head_add(struct softnet_data *sd,
-					unsigned int len)
+static inline void input_queue_head_incr(struct softnet_data *sd)
 {
 #ifdef CONFIG_RPS
-	sd->input_queue_head += len;
+	sd->input_queue_head++;
+#endif
+}
+
+static inline void input_queue_tail_incr_save(struct softnet_data *sd,
+					      unsigned int *qtail)
+{
+#ifdef CONFIG_RPS
+	*qtail = ++sd->input_queue_tail;
 #endif
 }
 
@@ -2326,7 +2334,7 @@
 #define netif_vdbg(priv, type, dev, format, args...)		\
 ({								\
 	if (0)							\
-		netif_printk(KERN_DEBUG, dev, format, ##args);	\
+		netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
 	0;							\
 })
 #endif
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index c2ee5d8..c00cc0c 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -333,7 +333,7 @@
 	/* Called when user tries to insert an entry of this type:
            hook_mask is a bitmask of hooks from which it can be
            called. */
-	/* Should return true or false, or an error code (-Exxxx). */
+	/* Should return 0 on success or an error code otherwise (-Exxxx). */
 	int (*checkentry)(const struct xt_tgchk_param *);
 
 	/* Called when entry of this type deleted. */
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index 7c36096..540703b 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -164,7 +164,10 @@
 /* Encapsulate (negative) errno value (in particular, NOTIFY_BAD <=> EPERM). */
 static inline int notifier_from_errno(int err)
 {
-	return NOTIFY_STOP_MASK | (NOTIFY_OK - err);
+	if (err)
+		return NOTIFY_STOP_MASK | (NOTIFY_OK - err);
+
+	return NOTIFY_OK;
 }
 
 /* Restore (negative) errno value from notify return value. */
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index aef22ae..5bb13b3 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -40,6 +40,7 @@
 	PCG_USED, /* this object is in use. */
 	PCG_ACCT_LRU, /* page has been accounted for */
 	PCG_FILE_MAPPED, /* page is accounted as "mapped" */
+	PCG_MIGRATION, /* under page migration */
 };
 
 #define TESTPCGFLAG(uname, lname)			\
@@ -79,6 +80,10 @@
 CLEARPCGFLAG(FileMapped, FILE_MAPPED)
 TESTPCGFLAG(FileMapped, FILE_MAPPED)
 
+SETPCGFLAG(Migration, MIGRATION)
+CLEARPCGFLAG(Migration, MIGRATION)
+TESTPCGFLAG(Migration, MIGRATION)
+
 static inline int page_cgroup_nid(struct page_cgroup *pc)
 {
 	return page_to_nid(pc->page);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index a327322..6a471ab 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -311,7 +311,8 @@
 	unsigned int	is_virtfn:1;
 	unsigned int	reset_fn:1;
 	unsigned int    is_hotplug_bridge:1;
-	unsigned int    aer_firmware_first:1;
+	unsigned int    __aer_firmware_first_valid:1;
+	unsigned int	__aer_firmware_first:1;
 	pci_dev_flags_t dev_flags;
 	atomic_t	enable_cnt;	/* pci_enable_device has been called */
 
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 3fd5c82..fb6c91e 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -485,6 +485,7 @@
 #include <linux/ftrace.h>
 #include <linux/cpu.h>
 #include <asm/atomic.h>
+#include <asm/local.h>
 
 #define PERF_MAX_STACK_DEPTH		255
 
@@ -587,21 +588,19 @@
 	struct rcu_head			rcu_head;
 #ifdef CONFIG_PERF_USE_VMALLOC
 	struct work_struct		work;
+	int				page_order;	/* allocation order  */
 #endif
-	int				data_order;
 	int				nr_pages;	/* nr of data pages  */
 	int				writable;	/* are we writable   */
 	int				nr_locked;	/* nr pages mlocked  */
 
 	atomic_t			poll;		/* POLL_ for wakeups */
-	atomic_t			events;		/* event_id limit       */
 
-	atomic_long_t			head;		/* write position    */
-	atomic_long_t			done_head;	/* completed head    */
-
-	atomic_t			lock;		/* concurrent writes */
-	atomic_t			wakeup;		/* needs a wakeup    */
-	atomic_t			lost;		/* nr records lost   */
+	local_t				head;		/* write position    */
+	local_t				nest;		/* nested writers    */
+	local_t				events;		/* event limit       */
+	local_t				wakeup;		/* wakeup stamp      */
+	local_t				lost;		/* nr records lost   */
 
 	long				watermark;	/* wakeup watermark  */
 
@@ -728,6 +727,7 @@
 	perf_overflow_handler_t		overflow_handler;
 
 #ifdef CONFIG_EVENT_TRACING
+	struct ftrace_event_call	*tp_event;
 	struct event_filter		*filter;
 #endif
 
@@ -803,11 +803,12 @@
 struct perf_output_handle {
 	struct perf_event		*event;
 	struct perf_mmap_data		*data;
-	unsigned long			head;
-	unsigned long			offset;
+	unsigned long			wakeup;
+	unsigned long			size;
+	void				*addr;
+	int				page;
 	int				nmi;
 	int				sample;
-	int				locked;
 };
 
 #ifdef CONFIG_PERF_EVENTS
@@ -993,8 +994,9 @@
 }
 
 extern void perf_event_init(void);
-extern void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
-			  int entry_size, struct pt_regs *regs);
+extern void perf_tp_event(u64 addr, u64 count, void *record,
+			  int entry_size, struct pt_regs *regs,
+			  struct hlist_head *head);
 extern void perf_bp_event(struct perf_event *event, void *data);
 
 #ifndef perf_misc_flags
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 7126a15..94c1f03 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -174,8 +174,7 @@
 #include <linux/rwsem.h>
 #include <linux/spinlock.h>
 #include <linux/wait.h>
-#include <linux/percpu.h>
-#include <linux/smp.h>
+#include <linux/percpu_counter.h>
 
 #include <linux/dqblk_xfs.h>
 #include <linux/dqblk_v1.h>
@@ -254,6 +253,7 @@
 
 struct dqstats {
 	int stat[_DQST_DQSTAT_LAST];
+	struct percpu_counter counter[_DQST_DQSTAT_LAST];
 };
 
 extern struct dqstats *dqstats_pcpu;
@@ -261,20 +261,12 @@
 
 static inline void dqstats_inc(unsigned int type)
 {
-#ifdef CONFIG_SMP
-	per_cpu_ptr(dqstats_pcpu, smp_processor_id())->stat[type]++;
-#else
-	dqstats.stat[type]++;
-#endif
+	percpu_counter_inc(&dqstats.counter[type]);
 }
 
 static inline void dqstats_dec(unsigned int type)
 {
-#ifdef CONFIG_SMP
-	per_cpu_ptr(dqstats_pcpu, smp_processor_id())->stat[type]--;
-#else
-	dqstats.stat[type]--;
-#endif
+	percpu_counter_dec(&dqstats.counter[type]);
 }
 
 #define DQ_MOD_B	0	/* dquot modified since read */
@@ -332,8 +324,8 @@
 
 /* Operations handling requests from userspace */
 struct quotactl_ops {
-	int (*quota_on)(struct super_block *, int, int, char *, int);
-	int (*quota_off)(struct super_block *, int, int);
+	int (*quota_on)(struct super_block *, int, int, char *);
+	int (*quota_off)(struct super_block *, int);
 	int (*quota_sync)(struct super_block *, int, int);
 	int (*get_info)(struct super_block *, int, struct if_dqinfo *);
 	int (*set_info)(struct super_block *, int, struct if_dqinfo *);
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 370abb1..aa36793 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -9,6 +9,10 @@
 
 #include <linux/fs.h>
 
+#define DQUOT_SPACE_WARN	0x1
+#define DQUOT_SPACE_RESERVE	0x2
+#define DQUOT_SPACE_NOFAIL	0x4
+
 static inline struct quota_info *sb_dqopt(struct super_block *sb)
 {
 	return &sb->s_dquot;
@@ -41,15 +45,22 @@
 struct dquot *dquot_alloc(struct super_block *sb, int type);
 void dquot_destroy(struct dquot *dquot);
 
-int __dquot_alloc_space(struct inode *inode, qsize_t number,
-		int warn, int reserve);
-void __dquot_free_space(struct inode *inode, qsize_t number, int reserve);
+int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags);
+void __dquot_free_space(struct inode *inode, qsize_t number, int flags);
 
 int dquot_alloc_inode(const struct inode *inode);
 
 int dquot_claim_space_nodirty(struct inode *inode, qsize_t number);
 void dquot_free_inode(const struct inode *inode);
 
+int dquot_disable(struct super_block *sb, int type, unsigned int flags);
+/* Suspend quotas on remount RO */
+static inline int dquot_suspend(struct super_block *sb, int type)
+{
+	return dquot_disable(sb, type, DQUOT_SUSPENDED);
+}
+int dquot_resume(struct super_block *sb, int type);
+
 int dquot_commit(struct dquot *dquot);
 int dquot_acquire(struct dquot *dquot);
 int dquot_release(struct dquot *dquot);
@@ -58,27 +69,25 @@
 
 int dquot_file_open(struct inode *inode, struct file *file);
 
-int vfs_quota_on(struct super_block *sb, int type, int format_id,
- 	char *path, int remount);
-int vfs_quota_enable(struct inode *inode, int type, int format_id,
+int dquot_quota_on(struct super_block *sb, int type, int format_id,
+	char *path);
+int dquot_enable(struct inode *inode, int type, int format_id,
 	unsigned int flags);
-int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
+int dquot_quota_on_path(struct super_block *sb, int type, int format_id,
  	struct path *path);
-int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
+int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
  	int format_id, int type);
-int vfs_quota_off(struct super_block *sb, int type, int remount);
-int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags);
-int vfs_quota_sync(struct super_block *sb, int type, int wait);
-int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
-int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
-int vfs_get_dqblk(struct super_block *sb, int type, qid_t id,
+int dquot_quota_off(struct super_block *sb, int type);
+int dquot_quota_sync(struct super_block *sb, int type, int wait);
+int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
+int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
+int dquot_get_dqblk(struct super_block *sb, int type, qid_t id,
 		struct fs_disk_quota *di);
-int vfs_set_dqblk(struct super_block *sb, int type, qid_t id,
+int dquot_set_dqblk(struct super_block *sb, int type, qid_t id,
 		struct fs_disk_quota *di);
 
 int __dquot_transfer(struct inode *inode, struct dquot **transfer_to);
 int dquot_transfer(struct inode *inode, struct iattr *iattr);
-int vfs_dq_quota_on_remount(struct super_block *sb);
 
 static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
 {
@@ -145,20 +154,7 @@
  * Operations supported for diskquotas.
  */
 extern const struct dquot_operations dquot_operations;
-extern const struct quotactl_ops vfs_quotactl_ops;
-
-#define sb_dquot_ops (&dquot_operations)
-#define sb_quotactl_ops (&vfs_quotactl_ops)
-
-/* Cannot be called inside a transaction */
-static inline int vfs_dq_off(struct super_block *sb, int remount)
-{
-	int ret = -ENOSYS;
-
-	if (sb->s_qcop && sb->s_qcop->quota_off)
-		ret = sb->s_qcop->quota_off(sb, -1, remount);
-	return ret;
-}
+extern const struct quotactl_ops dquot_quotactl_ops;
 
 #else
 
@@ -203,12 +199,6 @@
 	return 0;
 }
 
-/*
- * NO-OP when quota not configured.
- */
-#define sb_dquot_ops				(NULL)
-#define sb_quotactl_ops				(NULL)
-
 static inline void dquot_initialize(struct inode *inode)
 {
 }
@@ -226,33 +216,23 @@
 {
 }
 
-static inline int vfs_dq_off(struct super_block *sb, int remount)
-{
-	return 0;
-}
-
-static inline int vfs_dq_quota_on_remount(struct super_block *sb)
-{
-	return 0;
-}
-
 static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
 {
 	return 0;
 }
 
 static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
-		int warn, int reserve)
+		int flags)
 {
-	if (!reserve)
+	if (!(flags & DQUOT_SPACE_RESERVE))
 		inode_add_bytes(inode, number);
 	return 0;
 }
 
 static inline void __dquot_free_space(struct inode *inode, qsize_t number,
-		int reserve)
+		int flags)
 {
-	if (!reserve)
+	if (!(flags & DQUOT_SPACE_RESERVE))
 		inode_sub_bytes(inode, number);
 }
 
@@ -262,13 +242,35 @@
 	return 0;
 }
 
+static inline int dquot_disable(struct super_block *sb, int type,
+		unsigned int flags)
+{
+	return 0;
+}
+
+static inline int dquot_suspend(struct super_block *sb, int type)
+{
+	return 0;
+}
+
+static inline int dquot_resume(struct super_block *sb, int type)
+{
+	return 0;
+}
+
 #define dquot_file_open		generic_file_open
 
 #endif /* CONFIG_QUOTA */
 
 static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
-	return __dquot_alloc_space(inode, nr, 1, 0);
+	return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN);
+}
+
+static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr)
+{
+	__dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL);
+	mark_inode_dirty(inode);
 }
 
 static inline int dquot_alloc_space(struct inode *inode, qsize_t nr)
@@ -286,6 +288,11 @@
 	return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits);
 }
 
+static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr)
+{
+	dquot_alloc_space_nofail(inode, nr << inode->i_blkbits);
+}
+
 static inline int dquot_alloc_block(struct inode *inode, qsize_t nr)
 {
 	return dquot_alloc_space(inode, nr << inode->i_blkbits);
@@ -293,7 +300,7 @@
 
 static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
 {
-	return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0);
+	return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0);
 }
 
 static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr)
@@ -308,7 +315,8 @@
 
 static inline int dquot_reserve_block(struct inode *inode, qsize_t nr)
 {
-	return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1);
+	return __dquot_alloc_space(inode, nr << inode->i_blkbits,
+				DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE);
 }
 
 static inline int dquot_claim_block(struct inode *inode, qsize_t nr)
@@ -345,7 +353,7 @@
 static inline void dquot_release_reservation_block(struct inode *inode,
 		qsize_t nr)
 {
-	__dquot_free_space(inode, nr << inode->i_blkbits, 1);
+	__dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
 }
 
 #endif /* _LINUX_QUOTAOPS_ */
diff --git a/include/linux/random.h b/include/linux/random.h
index 25d02fe..fb7ab9d 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -40,6 +40,10 @@
 	__u32	buf[0];
 };
 
+struct rnd_state {
+	__u32 s1, s2, s3;
+};
+
 /* Exported functions */
 
 #ifdef __KERNEL__
@@ -74,6 +78,30 @@
 u32 random32(void);
 void srandom32(u32 seed);
 
+u32 prandom32(struct rnd_state *);
+
+/*
+ * Handle minimum values for seeds
+ */
+static inline u32 __seed(u32 x, u32 m)
+{
+	return (x < m) ? x + m : x;
+}
+
+/**
+ * prandom32_seed - set seed for prandom32().
+ * @state: pointer to state structure to receive the seed.
+ * @seed: arbitrary 64-bit value to use as a seed.
+ */
+static inline void prandom32_seed(struct rnd_state *state, u64 seed)
+{
+	u32 i = (seed >> 32) ^ (seed << 10) ^ seed;
+
+	state->s1 = __seed(i, 1);
+	state->s2 = __seed(i, 7);
+	state->s3 = __seed(i, 15);
+}
+
 #endif /* __KERNEL___ */
 
 #endif /* _LINUX_RANDOM_H */
diff --git a/include/linux/rio.h b/include/linux/rio.h
index dc0c755..bd6eb0e 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -64,10 +64,13 @@
 #define RIO_INB_MBOX_RESOURCE	1
 #define RIO_OUTB_MBOX_RESOURCE	2
 
+#define RIO_PW_MSG_SIZE		64
+
 extern struct bus_type rio_bus_type;
 extern struct list_head rio_devices;	/* list of all devices */
 
 struct rio_mport;
+union rio_pw_msg;
 
 /**
  * struct rio_dev - RIO device info
@@ -85,11 +88,15 @@
  * @swpinfo: Switch port info
  * @src_ops: Source operation capabilities
  * @dst_ops: Destination operation capabilities
+ * @comp_tag: RIO component tag
+ * @phys_efptr: RIO device extended features pointer
+ * @em_efptr: RIO Error Management features pointer
  * @dma_mask: Mask of bits of RIO address this device implements
  * @rswitch: Pointer to &struct rio_switch if valid for this device
  * @driver: Driver claiming this device
  * @dev: Device model device
  * @riores: RIO resources this device owns
+ * @pwcback: port-write callback function for this device
  * @destid: Network destination ID
  */
 struct rio_dev {
@@ -107,11 +114,15 @@
 	u32 swpinfo;		/* Only used for switches */
 	u32 src_ops;
 	u32 dst_ops;
+	u32 comp_tag;
+	u32 phys_efptr;
+	u32 em_efptr;
 	u64 dma_mask;
 	struct rio_switch *rswitch;	/* RIO switch info */
 	struct rio_driver *driver;	/* RIO driver claiming this device */
 	struct device dev;	/* LDM device structure */
 	struct resource riores[RIO_MAX_DEV_RESOURCES];
+	int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step);
 	u16 destid;
 };
 
@@ -211,8 +222,14 @@
  * @hopcount: Hopcount to this switch
  * @destid: Associated destid in the path
  * @route_table: Copy of switch routing table
+ * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
  * @add_entry: Callback for switch-specific route add function
  * @get_entry: Callback for switch-specific route get function
+ * @clr_table: Callback for switch-specific clear route table function
+ * @set_domain: Callback for switch-specific domain setting function
+ * @get_domain: Callback for switch-specific domain get function
+ * @em_init: Callback for switch-specific error management initialization function
+ * @em_handle: Callback for switch-specific error management handler function
  */
 struct rio_switch {
 	struct list_head node;
@@ -220,10 +237,19 @@
 	u16 hopcount;
 	u16 destid;
 	u8 *route_table;
+	u32 port_ok;
 	int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
 			  u16 table, u16 route_destid, u8 route_port);
 	int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
 			  u16 table, u16 route_destid, u8 * route_port);
+	int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
+			  u16 table);
+	int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
+			   u8 sw_domain);
+	int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
+			   u8 *sw_domain);
+	int (*em_init) (struct rio_dev *dev);
+	int (*em_handle) (struct rio_dev *dev, u8 swport);
 };
 
 /* Low-level architecture-dependent routines */
@@ -235,6 +261,7 @@
  * @cread: Callback to perform network read of config space.
  * @cwrite: Callback to perform network write of config space.
  * @dsend: Callback to send a doorbell message.
+ * @pwenable: Callback to enable/disable port-write message handling.
  */
 struct rio_ops {
 	int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
@@ -246,6 +273,7 @@
 	int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
 			u8 hopcount, u32 offset, int len, u32 data);
 	int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
+	int (*pwenable) (struct rio_mport *mport, int enable);
 };
 
 #define RIO_RESOURCE_MEM	0x00000100
@@ -302,21 +330,28 @@
 };
 
 /**
- * struct rio_route_ops - Per-switch route operations
+ * struct rio_switch_ops - Per-switch operations
  * @vid: RIO vendor ID
  * @did: RIO device ID
- * @add_hook: Callback that adds a route entry
- * @get_hook: Callback that gets a route entry
+ * @init_hook: Callback that performs switch device initialization
  *
- * Defines the operations that are necessary to manipulate the route
- * tables for a particular RIO switch device.
+ * Defines the operations that are necessary to initialize/control
+ * a particular RIO switch device.
  */
-struct rio_route_ops {
+struct rio_switch_ops {
 	u16 vid, did;
-	int (*add_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
-			 u16 table, u16 route_destid, u8 route_port);
-	int (*get_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
-			 u16 table, u16 route_destid, u8 * route_port);
+	int (*init_hook) (struct rio_dev *rdev, int do_enum);
+};
+
+union rio_pw_msg {
+	struct {
+		u32 comptag;	/* Component Tag CSR */
+		u32 errdetect;	/* Port N Error Detect CSR */
+		u32 is_port;	/* Implementation specific + PortID */
+		u32 ltlerrdet;	/* LTL Error Detect CSR */
+		u32 padding[12];
+	} em;
+	u32 raw[RIO_PW_MSG_SIZE/sizeof(u32)];
 };
 
 /* Architecture and hardware-specific functions */
diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h
index c93a58a..edc55da 100644
--- a/include/linux/rio_drv.h
+++ b/include/linux/rio_drv.h
@@ -413,6 +413,12 @@
 int rio_request_region(struct rio_dev *, int, char *);
 void rio_release_region(struct rio_dev *, int);
 
+/* Port-Write management */
+extern int rio_request_inb_pwrite(struct rio_dev *,
+			int (*)(struct rio_dev *, union rio_pw_msg*, int));
+extern int rio_release_inb_pwrite(struct rio_dev *);
+extern int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg);
+
 /* LDM support */
 int rio_register_driver(struct rio_driver *);
 void rio_unregister_driver(struct rio_driver *);
diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h
index 919d4e0..db50e1c 100644
--- a/include/linux/rio_ids.h
+++ b/include/linux/rio_ids.h
@@ -20,5 +20,19 @@
 
 #define RIO_VID_TUNDRA			0x000d
 #define RIO_DID_TSI500			0x0500
+#define RIO_DID_TSI568			0x0568
+#define RIO_DID_TSI572			0x0572
+#define RIO_DID_TSI574			0x0574
+#define RIO_DID_TSI576			0x0578 /* Same ID as Tsi578 */
+#define RIO_DID_TSI577			0x0577
+#define RIO_DID_TSI578			0x0578
+
+#define RIO_VID_IDT			0x0038
+#define RIO_DID_IDT70K200		0x0310
+#define RIO_DID_IDTCPS8			0x035c
+#define RIO_DID_IDTCPS12		0x035d
+#define RIO_DID_IDTCPS16		0x035b
+#define RIO_DID_IDTCPS6Q		0x035f
+#define RIO_DID_IDTCPS10Q		0x035e
 
 #endif				/* LINUX_RIO_IDS_H */
diff --git a/include/linux/rio_regs.h b/include/linux/rio_regs.h
index 326540f..aedee04 100644
--- a/include/linux/rio_regs.h
+++ b/include/linux/rio_regs.h
@@ -39,6 +39,8 @@
 #define  RIO_PEF_INB_MBOX2		0x00200000	/* [II] Mailbox 2 */
 #define  RIO_PEF_INB_MBOX3		0x00100000	/* [II] Mailbox 3 */
 #define  RIO_PEF_INB_DOORBELL		0x00080000	/* [II] Doorbells */
+#define  RIO_PEF_EXT_RT			0x00000200	/* [III, 1.3] Extended route table support */
+#define  RIO_PEF_STD_RT			0x00000100	/* [III, 1.3] Standard route table support */
 #define  RIO_PEF_CTLS			0x00000010	/* [III] CTLS */
 #define  RIO_PEF_EXT_FEATURES		0x00000008	/* [I] EFT_PTR valid */
 #define  RIO_PEF_ADDR_66		0x00000004	/* [I] 66 bits */
@@ -91,7 +93,10 @@
 #define  RIO_OPS_ATOMIC_CLR		0x00000010	/* [I] Atomic clr op */
 #define  RIO_OPS_PORT_WRITE		0x00000004	/* [I] Port-write op */
 
-					/* 0x20-0x3c *//* Reserved */
+					/* 0x20-0x30 *//* Reserved */
+
+#define	RIO_SWITCH_RT_LIMIT	0x34	/* [III, 1.3] Switch Route Table Destination ID Limit CAR */
+#define	 RIO_RT_MAX_DESTID		0x0000ffff
 
 #define RIO_MBOX_CSR		0x40	/* [II] Mailbox CSR */
 #define  RIO_MBOX0_AVAIL		0x80000000	/* [II] Mbox 0 avail */
@@ -153,7 +158,11 @@
 #define RIO_HOST_DID_LOCK_CSR	0x68	/* [III] Host Base Device ID Lock CSR */
 #define RIO_COMPONENT_TAG_CSR	0x6c	/* [III] Component Tag CSR */
 
-					/* 0x70-0xf8 *//* Reserved */
+#define RIO_STD_RTE_CONF_DESTID_SEL_CSR	0x70
+#define RIO_STD_RTE_CONF_PORT_SEL_CSR	0x74
+#define RIO_STD_RTE_DEFAULT_PORT	0x78
+
+					/* 0x7c-0xf8 *//* Reserved */
 					/* 0x100-0xfff8 *//* [I] Extended Features Space */
 					/* 0x10000-0xfffff8 *//* [I] Implementation-defined Space */
 
@@ -183,9 +192,14 @@
 #define RIO_EFB_PAR_EP_ID	0x0001	/* [IV] LP/LVDS EP Devices */
 #define RIO_EFB_PAR_EP_REC_ID	0x0002	/* [IV] LP/LVDS EP Recovery Devices */
 #define RIO_EFB_PAR_EP_FREE_ID	0x0003	/* [IV] LP/LVDS EP Free Devices */
+#define RIO_EFB_SER_EP_ID_V13P	0x0001	/* [VI] LP/Serial EP Devices, RapidIO Spec ver 1.3 and above */
+#define RIO_EFB_SER_EP_REC_ID_V13P	0x0002	/* [VI] LP/Serial EP Recovery Devices, RapidIO Spec ver 1.3 and above */
+#define RIO_EFB_SER_EP_FREE_ID_V13P	0x0003	/* [VI] LP/Serial EP Free Devices, RapidIO Spec ver 1.3 and above */
 #define RIO_EFB_SER_EP_ID	0x0004	/* [VI] LP/Serial EP Devices */
 #define RIO_EFB_SER_EP_REC_ID	0x0005	/* [VI] LP/Serial EP Recovery Devices */
 #define RIO_EFB_SER_EP_FREE_ID	0x0006	/* [VI] LP/Serial EP Free Devices */
+#define RIO_EFB_SER_EP_FREC_ID	0x0009  /* [VI] LP/Serial EP Free Recovery Devices */
+#define RIO_EFB_ERR_MGMNT	0x0007  /* [VIII] Error Management Extensions */
 
 /*
  * Physical 8/16 LP-LVDS
@@ -201,15 +215,71 @@
 #define RIO_PORT_MNT_HEADER		0x0000
 #define RIO_PORT_REQ_CTL_CSR		0x0020
 #define RIO_PORT_RSP_CTL_CSR		0x0024	/* 0x0001/0x0002 */
+#define RIO_PORT_LINKTO_CTL_CSR		0x0020	/* Serial */
+#define RIO_PORT_RSPTO_CTL_CSR		0x0024	/* Serial */
 #define RIO_PORT_GEN_CTL_CSR		0x003c
 #define  RIO_PORT_GEN_HOST		0x80000000
 #define  RIO_PORT_GEN_MASTER		0x40000000
 #define  RIO_PORT_GEN_DISCOVERED	0x20000000
 #define RIO_PORT_N_MNT_REQ_CSR(x)	(0x0040 + x*0x20)	/* 0x0002 */
 #define RIO_PORT_N_MNT_RSP_CSR(x)	(0x0044 + x*0x20)	/* 0x0002 */
+#define  RIO_PORT_N_MNT_RSP_RVAL	0x80000000 /* Response Valid */
+#define  RIO_PORT_N_MNT_RSP_ASTAT	0x000003e0 /* ackID Status */
+#define  RIO_PORT_N_MNT_RSP_LSTAT	0x0000001f /* Link Status */
 #define RIO_PORT_N_ACK_STS_CSR(x)	(0x0048 + x*0x20)	/* 0x0002 */
-#define RIO_PORT_N_ERR_STS_CSR(x)	(0x58 + x*0x20)
-#define PORT_N_ERR_STS_PORT_OK	0x00000002
-#define RIO_PORT_N_CTL_CSR(x)		(0x5c + x*0x20)
+#define  RIO_PORT_N_ACK_CLEAR		0x80000000
+#define  RIO_PORT_N_ACK_INBOUND		0x1f000000
+#define  RIO_PORT_N_ACK_OUTSTAND	0x00001f00
+#define  RIO_PORT_N_ACK_OUTBOUND	0x0000001f
+#define RIO_PORT_N_ERR_STS_CSR(x)	(0x0058 + x*0x20)
+#define  RIO_PORT_N_ERR_STS_PW_OUT_ES	0x00010000 /* Output Error-stopped */
+#define  RIO_PORT_N_ERR_STS_PW_INP_ES	0x00000100 /* Input Error-stopped */
+#define  RIO_PORT_N_ERR_STS_PW_PEND	0x00000010 /* Port-Write Pending */
+#define  RIO_PORT_N_ERR_STS_PORT_ERR	0x00000004
+#define  RIO_PORT_N_ERR_STS_PORT_OK	0x00000002
+#define  RIO_PORT_N_ERR_STS_PORT_UNINIT	0x00000001
+#define  RIO_PORT_N_ERR_STS_CLR_MASK	0x07120204
+#define RIO_PORT_N_CTL_CSR(x)		(0x005c + x*0x20)
+#define  RIO_PORT_N_CTL_PWIDTH		0xc0000000
+#define  RIO_PORT_N_CTL_PWIDTH_1	0x00000000
+#define  RIO_PORT_N_CTL_PWIDTH_4	0x40000000
+#define  RIO_PORT_N_CTL_P_TYP_SER	0x00000001
+#define  RIO_PORT_N_CTL_LOCKOUT		0x00000002
+#define  RIO_PORT_N_CTL_EN_RX_SER	0x00200000
+#define  RIO_PORT_N_CTL_EN_TX_SER	0x00400000
+#define  RIO_PORT_N_CTL_EN_RX_PAR	0x08000000
+#define  RIO_PORT_N_CTL_EN_TX_PAR	0x40000000
+
+/*
+ * Error Management Extensions (RapidIO 1.3+, Part 8)
+ *
+ * Extended Features Block ID=0x0007
+ */
+
+/* General EM Registers (Common for all Ports) */
+
+#define RIO_EM_EFB_HEADER	0x000	/* Error Management Extensions Block Header */
+#define RIO_EM_LTL_ERR_DETECT	0x008	/* Logical/Transport Layer Error Detect CSR */
+#define RIO_EM_LTL_ERR_EN	0x00c	/* Logical/Transport Layer Error Enable CSR */
+#define RIO_EM_LTL_HIADDR_CAP	0x010	/* Logical/Transport Layer High Address Capture CSR */
+#define RIO_EM_LTL_ADDR_CAP	0x014	/* Logical/Transport Layer Address Capture CSR */
+#define RIO_EM_LTL_DEVID_CAP	0x018	/* Logical/Transport Layer Device ID Capture CSR */
+#define RIO_EM_LTL_CTRL_CAP	0x01c	/* Logical/Transport Layer Control Capture CSR */
+#define RIO_EM_PW_TGT_DEVID	0x028	/* Port-write Target deviceID CSR */
+#define RIO_EM_PKT_TTL		0x02c	/* Packet Time-to-live CSR */
+
+/* Per-Port EM Registers */
+
+#define RIO_EM_PN_ERR_DETECT(x)	(0x040 + x*0x40) /* Port N Error Detect CSR */
+#define  REM_PED_IMPL_SPEC		0x80000000
+#define  REM_PED_LINK_TO		0x00000001
+#define RIO_EM_PN_ERRRATE_EN(x) (0x044 + x*0x40) /* Port N Error Rate Enable CSR */
+#define RIO_EM_PN_ATTRIB_CAP(x)	(0x048 + x*0x40) /* Port N Attributes Capture CSR */
+#define RIO_EM_PN_PKT_CAP_0(x)	(0x04c + x*0x40) /* Port N Packet/Control Symbol Capture 0 CSR */
+#define RIO_EM_PN_PKT_CAP_1(x)	(0x050 + x*0x40) /* Port N Packet Capture 1 CSR */
+#define RIO_EM_PN_PKT_CAP_2(x)	(0x054 + x*0x40) /* Port N Packet Capture 2 CSR */
+#define RIO_EM_PN_PKT_CAP_3(x)	(0x058 + x*0x40) /* Port N Packet Capture 3 CSR */
+#define RIO_EM_PN_ERRRATE(x)	(0x068 + x*0x40) /* Port N Error Rate CSR */
+#define RIO_EM_PN_ERRRATE_TR(x) (0x06c + x*0x40) /* Port N Error Rate Threshold CSR */
 
 #endif				/* LINUX_RIO_REGS_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index c0151ff..f118809 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -268,7 +268,6 @@
 extern void init_idle_bootup_task(struct task_struct *idle);
 
 extern int runqueue_is_locked(int cpu);
-extern void task_rq_unlock_wait(struct task_struct *p);
 
 extern cpumask_var_t nohz_cpu_mask;
 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ)
@@ -527,8 +526,9 @@
  * the locking of signal_struct.
  */
 struct signal_struct {
-	atomic_t		count;
+	atomic_t		sigcnt;
 	atomic_t		live;
+	int			nr_threads;
 
 	wait_queue_head_t	wait_chldexit;	/* for wait4() */
 
@@ -1423,6 +1423,7 @@
 	nodemask_t mems_allowed;	/* Protected by alloc_lock */
 	int mems_allowed_change_disable;
 	int cpuset_mem_spread_rotor;
+	int cpuset_slab_spread_rotor;
 #endif
 #ifdef CONFIG_CGROUPS
 	/* Control Group info protected by css_set_lock */
@@ -2035,7 +2036,7 @@
 extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
 extern void force_sig(int, struct task_struct *);
 extern int send_sig(int, struct task_struct *, int);
-extern void zap_other_threads(struct task_struct *p);
+extern int zap_other_threads(struct task_struct *p);
 extern struct sigqueue *sigqueue_alloc(void);
 extern void sigqueue_free(struct sigqueue *);
 extern int send_sigqueue(struct sigqueue *,  struct task_struct *, int group);
@@ -2100,7 +2101,6 @@
 extern void exit_thread(void);
 
 extern void exit_files(struct task_struct *);
-extern void __cleanup_signal(struct signal_struct *);
 extern void __cleanup_sighand(struct sighand_struct *);
 
 extern void exit_itimers(struct signal_struct *);
@@ -2147,6 +2147,11 @@
 #define while_each_thread(g, t) \
 	while ((t = next_thread(t)) != g)
 
+static inline int get_nr_threads(struct task_struct *tsk)
+{
+	return tsk->signal->nr_threads;
+}
+
 /* de_thread depends on thread_group_leader not being a pid based check */
 #define thread_group_leader(p)	(p == p->group_leader)
 
@@ -2393,10 +2398,6 @@
 	spin_lock_init(&sig->cputimer.lock);
 }
 
-static inline void thread_group_cputime_free(struct signal_struct *sig)
-{
-}
-
 /*
  * Reevaluate whether the task has signals pending delivery.
  * Wake the task if so.
diff --git a/include/linux/sdhci-pltfm.h b/include/linux/sdhci-pltfm.h
new file mode 100644
index 0000000..0239bd7
--- /dev/null
+++ b/include/linux/sdhci-pltfm.h
@@ -0,0 +1,35 @@
+/*
+ * Platform data declarations for the sdhci-pltfm driver.
+ *
+ * Copyright (c) 2010 MontaVista Software, LLC.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef _SDHCI_PLTFM_H
+#define _SDHCI_PLTFM_H
+
+struct sdhci_ops;
+struct sdhci_host;
+
+/**
+ * struct sdhci_pltfm_data - SDHCI platform-specific information & hooks
+ * @ops: optional pointer to the platform-provided SDHCI ops
+ * @quirks: optional SDHCI quirks
+ * @init: optional hook that is called during device probe, before the
+ *        driver tries to access any SDHCI registers
+ * @exit: optional hook that is called during device removal
+ */
+struct sdhci_pltfm_data {
+	struct sdhci_ops *ops;
+	unsigned int quirks;
+	int (*init)(struct sdhci_host *host);
+	void (*exit)(struct sdhci_host *host);
+};
+
+#endif /* _SDHCI_PLTFM_H */
diff --git a/include/linux/sem.h b/include/linux/sem.h
index 8a4adbef..f2961af 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -79,6 +79,7 @@
 #ifdef __KERNEL__
 #include <asm/atomic.h>
 #include <linux/rcupdate.h>
+#include <linux/cache.h>
 
 struct task_struct;
 
@@ -91,7 +92,8 @@
 
 /* One sem_array data structure for each set of semaphores in the system. */
 struct sem_array {
-	struct kern_ipc_perm	sem_perm;	/* permissions .. see ipc.h */
+	struct kern_ipc_perm	____cacheline_aligned_in_smp
+				sem_perm;	/* permissions .. see ipc.h */
 	time_t			sem_otime;	/* last semop time */
 	time_t			sem_ctime;	/* last change time */
 	struct sem		*sem_base;	/* ptr to first semaphore in array */
diff --git a/include/linux/sfi.h b/include/linux/sfi.h
index 9a6f760..0299b4c 100644
--- a/include/linux/sfi.h
+++ b/include/linux/sfi.h
@@ -73,6 +73,8 @@
 #define SFI_SIG_SPIB		"SPIB"
 #define SFI_SIG_I2CB		"I2CB"
 #define SFI_SIG_GPEM		"GPEM"
+#define SFI_SIG_DEVS		"DEVS"
+#define SFI_SIG_GPIO		"GPIO"
 
 #define SFI_SIGNATURE_SIZE	4
 #define SFI_OEM_ID_SIZE		6
@@ -145,6 +147,27 @@
 	u32	irq;
 } __packed;
 
+struct sfi_device_table_entry {
+	u8	type;		/* bus type, I2C, SPI or ...*/
+#define SFI_DEV_TYPE_SPI	0
+#define SFI_DEV_TYPE_I2C	1
+#define SFI_DEV_TYPE_UART	2
+#define SFI_DEV_TYPE_HSI	3
+#define SFI_DEV_TYPE_IPC	4
+
+	u8	host_num;	/* attached to host 0, 1...*/
+	u16	addr;
+	u8	irq;
+	u32	max_freq;
+	char	name[16];
+} __packed;
+
+struct sfi_gpio_table_entry {
+	char	controller_name[16];
+	u16	pin_no;
+	char	pin_name[16];
+} __packed;
+
 struct sfi_spi_table_entry {
 	u16	host_num;	/* attached to host 0, 1...*/
 	u16	cs;		/* chip select */
@@ -166,7 +189,6 @@
 	u16	phys_id;	/* physical GPE id */
 } __packed;
 
-
 typedef int (*sfi_table_handler) (struct sfi_table_header *table);
 
 #ifdef CONFIG_SFI
diff --git a/include/linux/swap.h b/include/linux/swap.h
index b6b6143..ff4acea 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -282,6 +282,11 @@
 extern int shmem_unuse(swp_entry_t entry, struct page *page);
 #endif /* CONFIG_MMU */
 
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+extern void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff,
+					struct page **pagep, swp_entry_t *ent);
+#endif
+
 extern void swap_unplug_io_fn(struct backing_dev_info *, struct page *);
 
 #ifdef CONFIG_SWAP
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index febedcf..81a4e21 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -73,16 +73,6 @@
 swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 			   int nelems, enum dma_data_direction dir);
 
-extern void
-swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
-				  unsigned long offset, size_t size,
-				  enum dma_data_direction dir);
-
-extern void
-swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
-				     unsigned long offset, size_t size,
-				     enum dma_data_direction dir);
-
 extern int
 swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
 
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 057929b..a1a86a5 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -103,22 +103,6 @@
 #define __SC_TEST5(t5, a5, ...)	__SC_TEST(t5); __SC_TEST4(__VA_ARGS__)
 #define __SC_TEST6(t6, a6, ...)	__SC_TEST(t6); __SC_TEST5(__VA_ARGS__)
 
-#ifdef CONFIG_PERF_EVENTS
-
-#define TRACE_SYS_ENTER_PERF_INIT(sname)				       \
-	.perf_event_enable = perf_sysenter_enable,			       \
-	.perf_event_disable = perf_sysenter_disable,
-
-#define TRACE_SYS_EXIT_PERF_INIT(sname)					       \
-	.perf_event_enable = perf_sysexit_enable,			       \
-	.perf_event_disable = perf_sysexit_disable,
-#else
-#define TRACE_SYS_ENTER_PERF(sname)
-#define TRACE_SYS_ENTER_PERF_INIT(sname)
-#define TRACE_SYS_EXIT_PERF(sname)
-#define TRACE_SYS_EXIT_PERF_INIT(sname)
-#endif /* CONFIG_PERF_EVENTS */
-
 #ifdef CONFIG_FTRACE_SYSCALLS
 #define __SC_STR_ADECL1(t, a)		#a
 #define __SC_STR_ADECL2(t, a, ...)	#a, __SC_STR_ADECL1(__VA_ARGS__)
@@ -134,54 +118,43 @@
 #define __SC_STR_TDECL5(t, a, ...)	#t, __SC_STR_TDECL4(__VA_ARGS__)
 #define __SC_STR_TDECL6(t, a, ...)	#t, __SC_STR_TDECL5(__VA_ARGS__)
 
+extern struct ftrace_event_class event_class_syscall_enter;
+extern struct ftrace_event_class event_class_syscall_exit;
+extern struct trace_event_functions enter_syscall_print_funcs;
+extern struct trace_event_functions exit_syscall_print_funcs;
+
 #define SYSCALL_TRACE_ENTER_EVENT(sname)				\
-	static const struct syscall_metadata __syscall_meta_##sname;	\
+	static struct syscall_metadata __syscall_meta_##sname;		\
 	static struct ftrace_event_call					\
 	__attribute__((__aligned__(4))) event_enter_##sname;		\
-	static struct trace_event enter_syscall_print_##sname = {	\
-		.trace                  = print_syscall_enter,		\
-	};								\
 	static struct ftrace_event_call __used				\
 	  __attribute__((__aligned__(4)))				\
 	  __attribute__((section("_ftrace_events")))			\
 	  event_enter_##sname = {					\
 		.name                   = "sys_enter"#sname,		\
-		.system                 = "syscalls",			\
-		.event                  = &enter_syscall_print_##sname,	\
-		.raw_init		= init_syscall_trace,		\
-		.define_fields		= syscall_enter_define_fields,	\
-		.regfunc		= reg_event_syscall_enter,	\
-		.unregfunc		= unreg_event_syscall_enter,	\
+		.class			= &event_class_syscall_enter,	\
+		.event.funcs            = &enter_syscall_print_funcs,	\
 		.data			= (void *)&__syscall_meta_##sname,\
-		TRACE_SYS_ENTER_PERF_INIT(sname)			\
 	}
 
 #define SYSCALL_TRACE_EXIT_EVENT(sname)					\
-	static const struct syscall_metadata __syscall_meta_##sname;	\
+	static struct syscall_metadata __syscall_meta_##sname;		\
 	static struct ftrace_event_call					\
 	__attribute__((__aligned__(4))) event_exit_##sname;		\
-	static struct trace_event exit_syscall_print_##sname = {	\
-		.trace                  = print_syscall_exit,		\
-	};								\
 	static struct ftrace_event_call __used				\
 	  __attribute__((__aligned__(4)))				\
 	  __attribute__((section("_ftrace_events")))			\
 	  event_exit_##sname = {					\
 		.name                   = "sys_exit"#sname,		\
-		.system                 = "syscalls",			\
-		.event                  = &exit_syscall_print_##sname,	\
-		.raw_init		= init_syscall_trace,		\
-		.define_fields		= syscall_exit_define_fields,	\
-		.regfunc		= reg_event_syscall_exit,	\
-		.unregfunc		= unreg_event_syscall_exit,	\
+		.class			= &event_class_syscall_exit,	\
+		.event.funcs		= &exit_syscall_print_funcs,	\
 		.data			= (void *)&__syscall_meta_##sname,\
-		TRACE_SYS_EXIT_PERF_INIT(sname)			\
 	}
 
 #define SYSCALL_METADATA(sname, nb)				\
 	SYSCALL_TRACE_ENTER_EVENT(sname);			\
 	SYSCALL_TRACE_EXIT_EVENT(sname);			\
-	static const struct syscall_metadata __used		\
+	static struct syscall_metadata __used			\
 	  __attribute__((__aligned__(4)))			\
 	  __attribute__((section("__syscalls_metadata")))	\
 	  __syscall_meta_##sname = {				\
@@ -191,12 +164,14 @@
 		.args		= args_##sname,			\
 		.enter_event	= &event_enter_##sname,		\
 		.exit_event	= &event_exit_##sname,		\
+		.enter_fields	= LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
+		.exit_fields	= LIST_HEAD_INIT(__syscall_meta_##sname.exit_fields), \
 	};
 
 #define SYSCALL_DEFINE0(sname)					\
 	SYSCALL_TRACE_ENTER_EVENT(_##sname);			\
 	SYSCALL_TRACE_EXIT_EVENT(_##sname);			\
-	static const struct syscall_metadata __used		\
+	static struct syscall_metadata __used			\
 	  __attribute__((__aligned__(4)))			\
 	  __attribute__((section("__syscalls_metadata")))	\
 	  __syscall_meta__##sname = {				\
@@ -204,6 +179,8 @@
 		.nb_args 	= 0,				\
 		.enter_event	= &event_enter__##sname,	\
 		.exit_event	= &event_exit__##sname,		\
+		.enter_fields	= LIST_HEAD_INIT(__syscall_meta__##sname.enter_fields), \
+		.exit_fields	= LIST_HEAD_INIT(__syscall_meta__##sname.exit_fields), \
 	};							\
 	asmlinkage long sys_##sname(void)
 #else
diff --git a/include/linux/threads.h b/include/linux/threads.h
index 052b12b..383ab95 100644
--- a/include/linux/threads.h
+++ b/include/linux/threads.h
@@ -33,4 +33,13 @@
 #define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
 	(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
 
+/*
+ * Define a minimum number of pids per cpu.  Heuristically based
+ * on original pid max of 32k for 32 cpus.  Also, increase the
+ * minimum settable value for pid_max on the running system based
+ * on similar defaults.  See kernel/pid.c:pidmap_init() for details.
+ */
+#define PIDS_PER_CPU_DEFAULT	1024
+#define PIDS_PER_CPU_MIN	8
+
 #endif
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 5b81156..c44df50 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -31,6 +31,7 @@
 #include <linux/bitops.h>
 #include <linux/mmzone.h>
 #include <linux/smp.h>
+#include <linux/percpu.h>
 #include <asm/topology.h>
 
 #ifndef node_has_online_mem
@@ -203,8 +204,114 @@
 #ifndef SD_NODE_INIT
 #error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!!
 #endif
+
 #endif /* CONFIG_NUMA */
 
+#ifdef CONFIG_USE_PERCPU_NUMA_NODE_ID
+DECLARE_PER_CPU(int, numa_node);
+
+#ifndef numa_node_id
+/* Returns the number of the current Node. */
+static inline int numa_node_id(void)
+{
+	return __this_cpu_read(numa_node);
+}
+#endif
+
+#ifndef cpu_to_node
+static inline int cpu_to_node(int cpu)
+{
+	return per_cpu(numa_node, cpu);
+}
+#endif
+
+#ifndef set_numa_node
+static inline void set_numa_node(int node)
+{
+	percpu_write(numa_node, node);
+}
+#endif
+
+#ifndef set_cpu_numa_node
+static inline void set_cpu_numa_node(int cpu, int node)
+{
+	per_cpu(numa_node, cpu) = node;
+}
+#endif
+
+#else	/* !CONFIG_USE_PERCPU_NUMA_NODE_ID */
+
+/* Returns the number of the current Node. */
+#ifndef numa_node_id
+static inline int numa_node_id(void)
+{
+	return cpu_to_node(raw_smp_processor_id());
+}
+#endif
+
+#endif	/* [!]CONFIG_USE_PERCPU_NUMA_NODE_ID */
+
+#ifdef CONFIG_HAVE_MEMORYLESS_NODES
+
+/*
+ * N.B., Do NOT reference the '_numa_mem_' per cpu variable directly.
+ * It will not be defined when CONFIG_HAVE_MEMORYLESS_NODES is not defined.
+ * Use the accessor functions set_numa_mem(), numa_mem_id() and cpu_to_mem().
+ */
+DECLARE_PER_CPU(int, _numa_mem_);
+
+#ifndef set_numa_mem
+static inline void set_numa_mem(int node)
+{
+	percpu_write(_numa_mem_, node);
+}
+#endif
+
+#ifndef numa_mem_id
+/* Returns the number of the nearest Node with memory */
+static inline int numa_mem_id(void)
+{
+	return __this_cpu_read(_numa_mem_);
+}
+#endif
+
+#ifndef cpu_to_mem
+static inline int cpu_to_mem(int cpu)
+{
+	return per_cpu(_numa_mem_, cpu);
+}
+#endif
+
+#ifndef set_cpu_numa_mem
+static inline void set_cpu_numa_mem(int cpu, int node)
+{
+	per_cpu(_numa_mem_, cpu) = node;
+}
+#endif
+
+#else	/* !CONFIG_HAVE_MEMORYLESS_NODES */
+
+static inline void set_numa_mem(int node) {}
+
+static inline void set_cpu_numa_mem(int cpu, int node) {}
+
+#ifndef numa_mem_id
+/* Returns the number of the nearest Node with memory */
+static inline int numa_mem_id(void)
+{
+	return numa_node_id();
+}
+#endif
+
+#ifndef cpu_to_mem
+static inline int cpu_to_mem(int cpu)
+{
+	return cpu_to_node(cpu);
+}
+#endif
+
+#endif	/* [!]CONFIG_HAVE_MEMORYLESS_NODES */
+
 #ifndef topology_physical_package_id
 #define topology_physical_package_id(cpu)	((void)(cpu), -1)
 #endif
@@ -218,9 +325,4 @@
 #define topology_core_cpumask(cpu)		cpumask_of(cpu)
 #endif
 
-/* Returns the number of the current Node. */
-#ifndef numa_node_id
-#define numa_node_id()		(cpu_to_node(raw_smp_processor_id()))
-#endif
-
 #endif /* _LINUX_TOPOLOGY_H */
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 1d85f9a..9a59d1f 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -20,12 +20,17 @@
 struct module;
 struct tracepoint;
 
+struct tracepoint_func {
+	void *func;
+	void *data;
+};
+
 struct tracepoint {
 	const char *name;		/* Tracepoint name */
 	int state;			/* State. */
 	void (*regfunc)(void);
 	void (*unregfunc)(void);
-	void **funcs;
+	struct tracepoint_func *funcs;
 } __attribute__((aligned(32)));		/*
 					 * Aligned on 32 bytes because it is
 					 * globally visible and gcc happily
@@ -37,16 +42,19 @@
  * Connect a probe to a tracepoint.
  * Internal API, should not be used directly.
  */
-extern int tracepoint_probe_register(const char *name, void *probe);
+extern int tracepoint_probe_register(const char *name, void *probe, void *data);
 
 /*
  * Disconnect a probe from a tracepoint.
  * Internal API, should not be used directly.
  */
-extern int tracepoint_probe_unregister(const char *name, void *probe);
+extern int
+tracepoint_probe_unregister(const char *name, void *probe, void *data);
 
-extern int tracepoint_probe_register_noupdate(const char *name, void *probe);
-extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe);
+extern int tracepoint_probe_register_noupdate(const char *name, void *probe,
+					      void *data);
+extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe,
+						void *data);
 extern void tracepoint_probe_update_all(void);
 
 struct tracepoint_iter {
@@ -102,17 +110,27 @@
 /*
  * it_func[0] is never NULL because there is at least one element in the array
  * when the array itself is non NULL.
+ *
+ * Note, the proto and args passed in includes "__data" as the first parameter.
+ * The reason for this is to handle the "void" prototype. If a tracepoint
+ * has a "void" prototype, then it is invalid to declare a function
+ * as "(void *, void)". The DECLARE_TRACE_NOARGS() will pass in just
+ * "void *data", where as the DECLARE_TRACE() will pass in "void *data, proto".
  */
 #define __DO_TRACE(tp, proto, args)					\
 	do {								\
-		void **it_func;						\
+		struct tracepoint_func *it_func_ptr;			\
+		void *it_func;						\
+		void *__data;						\
 									\
 		rcu_read_lock_sched_notrace();				\
-		it_func = rcu_dereference_sched((tp)->funcs);		\
-		if (it_func) {						\
+		it_func_ptr = rcu_dereference_sched((tp)->funcs);	\
+		if (it_func_ptr) {					\
 			do {						\
-				((void(*)(proto))(*it_func))(args);	\
-			} while (*(++it_func));				\
+				it_func = (it_func_ptr)->func;		\
+				__data = (it_func_ptr)->data;		\
+				((void(*)(proto))(it_func))(args);	\
+			} while ((++it_func_ptr)->func);		\
 		}							\
 		rcu_read_unlock_sched_notrace();			\
 	} while (0)
@@ -122,24 +140,32 @@
  * not add unwanted padding between the beginning of the section and the
  * structure. Force alignment to the same alignment as the section start.
  */
-#define DECLARE_TRACE(name, proto, args)				\
+#define __DECLARE_TRACE(name, proto, args, data_proto, data_args)	\
 	extern struct tracepoint __tracepoint_##name;			\
 	static inline void trace_##name(proto)				\
 	{								\
 		if (unlikely(__tracepoint_##name.state))		\
 			__DO_TRACE(&__tracepoint_##name,		\
-				TP_PROTO(proto), TP_ARGS(args));	\
+				TP_PROTO(data_proto),			\
+				TP_ARGS(data_args));			\
 	}								\
-	static inline int register_trace_##name(void (*probe)(proto))	\
+	static inline int						\
+	register_trace_##name(void (*probe)(data_proto), void *data)	\
 	{								\
-		return tracepoint_probe_register(#name, (void *)probe);	\
+		return tracepoint_probe_register(#name, (void *)probe,	\
+						 data);			\
 	}								\
-	static inline int unregister_trace_##name(void (*probe)(proto))	\
+	static inline int						\
+	unregister_trace_##name(void (*probe)(data_proto), void *data)	\
 	{								\
-		return tracepoint_probe_unregister(#name, (void *)probe);\
+		return tracepoint_probe_unregister(#name, (void *)probe, \
+						   data);		\
+	}								\
+	static inline void						\
+	check_trace_callback_type_##name(void (*cb)(data_proto))	\
+	{								\
 	}
 
-
 #define DEFINE_TRACE_FN(name, reg, unreg)				\
 	static const char __tpstrtab_##name[]				\
 	__attribute__((section("__tracepoints_strings"))) = #name;	\
@@ -156,18 +182,23 @@
 	EXPORT_SYMBOL(__tracepoint_##name)
 
 #else /* !CONFIG_TRACEPOINTS */
-#define DECLARE_TRACE(name, proto, args)				\
-	static inline void _do_trace_##name(struct tracepoint *tp, proto) \
-	{ }								\
+#define __DECLARE_TRACE(name, proto, args, data_proto, data_args)	\
 	static inline void trace_##name(proto)				\
 	{ }								\
-	static inline int register_trace_##name(void (*probe)(proto))	\
+	static inline int						\
+	register_trace_##name(void (*probe)(data_proto),		\
+			      void *data)				\
 	{								\
 		return -ENOSYS;						\
 	}								\
-	static inline int unregister_trace_##name(void (*probe)(proto))	\
+	static inline int						\
+	unregister_trace_##name(void (*probe)(data_proto),		\
+				void *data)				\
 	{								\
 		return -ENOSYS;						\
+	}								\
+	static inline void check_trace_callback_type_##name(void (*cb)(data_proto)) \
+	{								\
 	}
 
 #define DEFINE_TRACE_FN(name, reg, unreg)
@@ -176,6 +207,29 @@
 #define EXPORT_TRACEPOINT_SYMBOL(name)
 
 #endif /* CONFIG_TRACEPOINTS */
+
+/*
+ * The need for the DECLARE_TRACE_NOARGS() is to handle the prototype
+ * (void). "void" is a special value in a function prototype and can
+ * not be combined with other arguments. Since the DECLARE_TRACE()
+ * macro adds a data element at the beginning of the prototype,
+ * we need a way to differentiate "(void *data, proto)" from
+ * "(void *data, void)". The second prototype is invalid.
+ *
+ * DECLARE_TRACE_NOARGS() passes "void" as the tracepoint prototype
+ * and "void *__data" as the callback prototype.
+ *
+ * DECLARE_TRACE() passes "proto" as the tracepoint protoype and
+ * "void *__data, proto" as the callback prototype.
+ */
+#define DECLARE_TRACE_NOARGS(name)					\
+		__DECLARE_TRACE(name, void, , void *__data, __data)
+
+#define DECLARE_TRACE(name, proto, args)				\
+		__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args),	\
+				PARAMS(void *__data, proto),		\
+				PARAMS(__data, args))
+
 #endif /* DECLARE_TRACE */
 
 #ifndef TRACE_EVENT
diff --git a/include/linux/uinput.h b/include/linux/uinput.h
index 15ddd44..60c81da 100644
--- a/include/linux/uinput.h
+++ b/include/linux/uinput.h
@@ -166,11 +166,11 @@
 struct uinput_user_dev {
 	char name[UINPUT_MAX_NAME_SIZE];
 	struct input_id id;
-        int ff_effects_max;
-        int absmax[ABS_MAX + 1];
-        int absmin[ABS_MAX + 1];
-        int absfuzz[ABS_MAX + 1];
-        int absflat[ABS_MAX + 1];
+	int ff_effects_max;
+	int absmax[ABS_CNT];
+	int absmin[ABS_CNT];
+	int absfuzz[ABS_CNT];
+	int absflat[ABS_CNT];
 };
 #endif	/* __UINPUT_H_ */
 
diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h
index 2389f93..92f1d99 100644
--- a/include/linux/usb/audio-v2.h
+++ b/include/linux/usb/audio-v2.h
@@ -105,6 +105,22 @@
 	__u8 iChannelNames;
 } __attribute__((packed));
 
+/* 4.10.1.2 Class-Specific AS Isochronous Audio Data Endpoint Descriptor */
+
+struct uac2_iso_endpoint_descriptor {
+	__u8  bLength;			/* in bytes: 8 */
+	__u8  bDescriptorType;		/* USB_DT_CS_ENDPOINT */
+	__u8  bDescriptorSubtype;	/* EP_GENERAL */
+	__u8  bmAttributes;
+	__u8  bmControls;
+	__u8  bLockDelayUnits;
+	__le16 wLockDelay;
+} __attribute__((packed));
+
+#define UAC2_CONTROL_PITCH		(3 << 0)
+#define UAC2_CONTROL_DATA_OVERRUN	(3 << 2)
+#define UAC2_CONTROL_DATA_UNDERRUN	(3 << 4)
+
 /* 6.1 Interrupt Data Message */
 
 #define UAC2_INTERRUPT_DATA_MSG_VENDOR	(1 << 0)
diff --git a/include/linux/uuid.h b/include/linux/uuid.h
new file mode 100644
index 0000000..5b7efbf
--- /dev/null
+++ b/include/linux/uuid.h
@@ -0,0 +1,70 @@
+/*
+ * UUID/GUID definition
+ *
+ * Copyright (C) 2010, Intel Corp.
+ *	Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LINUX_UUID_H_
+#define _LINUX_UUID_H_
+
+#include <linux/types.h>
+#include <linux/string.h>
+
+typedef struct {
+	__u8 b[16];
+} uuid_le;
+
+typedef struct {
+	__u8 b[16];
+} uuid_be;
+
+#define UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
+((uuid_le)								\
+{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
+   (b) & 0xff, ((b) >> 8) & 0xff,					\
+   (c) & 0xff, ((c) >> 8) & 0xff,					\
+   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+
+#define UUID_BE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)		\
+((uuid_be)								\
+{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \
+   ((b) >> 8) & 0xff, (b) & 0xff,					\
+   ((c) >> 8) & 0xff, (c) & 0xff,					\
+   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+
+#define NULL_UUID_LE							\
+	UUID_LE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
+		0x00, 0x00, 0x00, 0x00)
+
+#define NULL_UUID_BE							\
+	UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
+		0x00, 0x00, 0x00, 0x00)
+
+static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2)
+{
+	return memcmp(&u1, &u2, sizeof(uuid_le));
+}
+
+static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2)
+{
+	return memcmp(&u1, &u2, sizeof(uuid_be));
+}
+
+extern void uuid_le_gen(uuid_le *u);
+extern void uuid_be_gen(uuid_be *u);
+
+#endif
diff --git a/include/net/caif/cfctrl.h b/include/net/caif/cfctrl.h
index 997603f..9402543 100644
--- a/include/net/caif/cfctrl.h
+++ b/include/net/caif/cfctrl.h
@@ -94,8 +94,8 @@
 	enum cfctrl_cmd cmd;
 	u8 channel_id;
 	struct cfctrl_link_param param;
-	struct cfctrl_request_info *next;
 	struct cflayer *client_layer;
+	struct list_head list;
 };
 
 struct cfctrl {
@@ -103,7 +103,7 @@
 	struct cfctrl_rsp res;
 	atomic_t req_seq_no;
 	atomic_t rsp_seq_no;
-	struct cfctrl_request_info *first_req;
+	struct list_head list;
 	/* Protects from simultaneous access to first_req list */
 	spinlock_t info_list_lock;
 #ifndef CAIF_NO_LOOP
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h
new file mode 100644
index 0000000..726cc35
--- /dev/null
+++ b/include/net/cls_cgroup.h
@@ -0,0 +1,63 @@
+/*
+ * cls_cgroup.h			Control Group Classifier
+ *
+ * Authors:	Thomas Graf <tgraf@suug.ch>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+
+#ifndef _NET_CLS_CGROUP_H
+#define _NET_CLS_CGROUP_H
+
+#include <linux/cgroup.h>
+#include <linux/hardirq.h>
+#include <linux/rcupdate.h>
+
+#ifdef CONFIG_CGROUPS
+struct cgroup_cls_state
+{
+	struct cgroup_subsys_state css;
+	u32 classid;
+};
+
+#ifdef CONFIG_NET_CLS_CGROUP
+static inline u32 task_cls_classid(struct task_struct *p)
+{
+	if (in_interrupt())
+		return 0;
+
+	return container_of(task_subsys_state(p, net_cls_subsys_id),
+			    struct cgroup_cls_state, css)->classid;
+}
+#else
+extern int net_cls_subsys_id;
+
+static inline u32 task_cls_classid(struct task_struct *p)
+{
+	int id;
+	u32 classid = 0;
+
+	if (in_interrupt())
+		return 0;
+
+	rcu_read_lock();
+	id = rcu_dereference(net_cls_subsys_id);
+	if (id >= 0)
+		classid = container_of(task_subsys_state(p, id),
+				       struct cgroup_cls_state, css)->classid;
+	rcu_read_unlock();
+
+	return classid;
+}
+#endif
+#else
+static inline u32 task_cls_classid(struct task_struct *p)
+{
+	return 0;
+}
+#endif
+#endif  /* _NET_CLS_CGROUP_H */
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index e24b036..de22cbf 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -815,6 +815,7 @@
  *	encrypted in hardware.
  * @alg: The key algorithm.
  * @flags: key flags, see &enum ieee80211_key_flags.
+ * @ap_addr: AP's MAC address
  * @keyidx: the key index (0-3)
  * @keylen: key material length
  * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte)
@@ -1637,6 +1638,8 @@
  *	Returns a negative error code on failure.
  *	The callback must be atomic.
  *
+ * @get_survey: Return per-channel survey information
+ *
  * @rfkill_poll: Poll rfkill hardware state. If you need this, you also
  *	need to set wiphy->rfkill_poll to %true before registration,
  *	and need to call wiphy_rfkill_set_hw_state() in the callback.
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index dffde8e..3d7524f 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -61,7 +61,7 @@
 	int ret = NF_ACCEPT;
 
 	if (ct && ct != &nf_conntrack_untracked) {
-		if (!nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
+		if (!nf_ct_is_confirmed(ct))
 			ret = __nf_conntrack_confirm(skb);
 		if (likely(ret == NF_ACCEPT))
 			nf_ct_deliver_cached_events(ct);
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 6173c61..4b86011 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -876,7 +876,7 @@
 
 	/* Reference counting. */
 	atomic_t refcnt;
-	int	 dead:1,
+	__u32	 dead:1,
 		/* RTO-Pending : A flag used to track if one of the DATA
 		 *		chunks sent to this address is currently being
 		 *		used to compute a RTT. If this flag is 0,
diff --git a/include/net/sock.h b/include/net/sock.h
index 5697caf..ca241ea 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -312,7 +312,7 @@
 	void			*sk_security;
 #endif
 	__u32			sk_mark;
-	/* XXX 4 bytes hole on 64 bit */
+	u32			sk_classid;
 	void			(*sk_state_change)(struct sock *sk);
 	void			(*sk_data_ready)(struct sock *sk, int bytes);
 	void			(*sk_write_space)(struct sock *sk);
@@ -1026,15 +1026,23 @@
 				SINGLE_DEPTH_NESTING)
 #define bh_unlock_sock(__sk)	spin_unlock(&((__sk)->sk_lock.slock))
 
-static inline void lock_sock_bh(struct sock *sk)
+extern bool lock_sock_fast(struct sock *sk);
+/**
+ * unlock_sock_fast - complement of lock_sock_fast
+ * @sk: socket
+ * @slow: slow mode
+ *
+ * fast unlock socket for user context.
+ * If slow mode is on, we call regular release_sock()
+ */
+static inline void unlock_sock_fast(struct sock *sk, bool slow)
 {
-	spin_lock_bh(&sk->sk_lock.slock);
+	if (slow)
+		release_sock(sk);
+	else
+		spin_unlock_bh(&sk->sk_lock.slock);
 }
 
-static inline void unlock_sock_bh(struct sock *sk)
-{
-	spin_unlock_bh(&sk->sk_lock.slock);
-}
 
 extern struct sock		*sk_alloc(struct net *net, int family,
 					  gfp_t priority,
@@ -1074,6 +1082,14 @@
 extern void sock_kfree_s(struct sock *sk, void *mem, int size);
 extern void sk_send_sigurg(struct sock *sk);
 
+#ifdef CONFIG_CGROUPS
+extern void sock_update_classid(struct sock *sk);
+#else
+static inline void sock_update_classid(struct sock *sk)
+{
+}
+#endif
+
 /*
  * Functions to fill in entries in struct proto_ops when a protocol
  * does not implement a particular function.
@@ -1404,7 +1420,7 @@
 
 /**
  * wq_has_sleeper - check if there are any waiting processes
- * @sk: struct socket_wq
+ * @wq: struct socket_wq
  *
  * Returns true if socket_wq has waiting processes
  *
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 2aa6aa3..f5b1ba9 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -353,7 +353,7 @@
 		  jbd2_dev_to_name(__entry->dev), __entry->blk, __entry->count)
 );
 
-TRACE_EVENT(ext4_mb_new_inode_pa,
+DECLARE_EVENT_CLASS(ext4__mb_new_pa,
 	TP_PROTO(struct ext4_allocation_context *ac,
 		 struct ext4_prealloc_space *pa),
 
@@ -381,32 +381,20 @@
 		  __entry->pa_pstart, __entry->pa_len, __entry->pa_lstart)
 );
 
-TRACE_EVENT(ext4_mb_new_group_pa,
+DEFINE_EVENT(ext4__mb_new_pa, ext4_mb_new_inode_pa,
+
 	TP_PROTO(struct ext4_allocation_context *ac,
 		 struct ext4_prealloc_space *pa),
 
-	TP_ARGS(ac, pa),
+	TP_ARGS(ac, pa)
+);
 
-	TP_STRUCT__entry(
-		__field(	dev_t,	dev			)
-		__field(	ino_t,	ino			)
-		__field(	__u64,	pa_pstart		)
-		__field(	__u32,	pa_len			)
-		__field(	__u64,	pa_lstart		)
+DEFINE_EVENT(ext4__mb_new_pa, ext4_mb_new_group_pa,
 
-	),
+	TP_PROTO(struct ext4_allocation_context *ac,
+		 struct ext4_prealloc_space *pa),
 
-	TP_fast_assign(
-		__entry->dev		= ac->ac_sb->s_dev;
-		__entry->ino		= ac->ac_inode->i_ino;
-		__entry->pa_pstart	= pa->pa_pstart;
-		__entry->pa_len		= pa->pa_len;
-		__entry->pa_lstart	= pa->pa_lstart;
-	),
-
-	TP_printk("dev %s ino %lu pstart %llu len %u lstart %llu",
-		  jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
-		  __entry->pa_pstart, __entry->pa_len, __entry->pa_lstart)
+	TP_ARGS(ac, pa)
 );
 
 TRACE_EVENT(ext4_mb_release_inode_pa,
@@ -618,9 +606,9 @@
 );
 
 TRACE_EVENT(ext4_sync_file,
-	TP_PROTO(struct file *file, struct dentry *dentry, int datasync),
+	TP_PROTO(struct file *file, int datasync),
 
-	TP_ARGS(file, dentry, datasync),
+	TP_ARGS(file, datasync),
 
 	TP_STRUCT__entry(
 		__field(	dev_t,	dev			)
@@ -630,6 +618,8 @@
 	),
 
 	TP_fast_assign(
+		struct dentry *dentry = file->f_path.dentry;
+
 		__entry->dev		= dentry->d_inode->i_sb->s_dev;
 		__entry->ino		= dentry->d_inode->i_ino;
 		__entry->datasync	= datasync;
@@ -790,7 +780,7 @@
 		  __entry->result_len, __entry->result_logical)
 );
 
-TRACE_EVENT(ext4_mballoc_discard,
+DECLARE_EVENT_CLASS(ext4__mballoc,
 	TP_PROTO(struct ext4_allocation_context *ac),
 
 	TP_ARGS(ac),
@@ -819,33 +809,18 @@
 		  __entry->result_len, __entry->result_logical)
 );
 
-TRACE_EVENT(ext4_mballoc_free,
+DEFINE_EVENT(ext4__mballoc, ext4_mballoc_discard,
+
 	TP_PROTO(struct ext4_allocation_context *ac),
 
-	TP_ARGS(ac),
+	TP_ARGS(ac)
+);
 
-	TP_STRUCT__entry(
-		__field(	dev_t,	dev			)
-		__field(	ino_t,	ino			)
-		__field(	__u32, 	result_logical		)
-		__field(	  int,	result_start		)
-		__field(	__u32, 	result_group		)
-		__field(	  int,	result_len		)
-	),
+DEFINE_EVENT(ext4__mballoc, ext4_mballoc_free,
 
-	TP_fast_assign(
-		__entry->dev		= ac->ac_inode->i_sb->s_dev;
-		__entry->ino		= ac->ac_inode->i_ino;
-		__entry->result_logical	= ac->ac_b_ex.fe_logical;
-		__entry->result_start	= ac->ac_b_ex.fe_start;
-		__entry->result_group	= ac->ac_b_ex.fe_group;
-		__entry->result_len	= ac->ac_b_ex.fe_len;
-	),
+	TP_PROTO(struct ext4_allocation_context *ac),
 
-	TP_printk("dev %s inode %lu extent %u/%d/%u@%u ",
-		  jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
-		  __entry->result_group, __entry->result_start,
-		  __entry->result_len, __entry->result_logical)
+	TP_ARGS(ac)
 );
 
 TRACE_EVENT(ext4_forget,
@@ -974,6 +949,39 @@
 		  __entry->reserved_meta_blocks, __entry->allocated_meta_blocks)
 );
 
+DECLARE_EVENT_CLASS(ext4__bitmap_load,
+	TP_PROTO(struct super_block *sb, unsigned long group),
+
+	TP_ARGS(sb, group),
+
+	TP_STRUCT__entry(
+		__field(	dev_t,	dev			)
+		__field(	__u32,	group			)
+
+	),
+
+	TP_fast_assign(
+		__entry->dev	= sb->s_dev;
+		__entry->group	= group;
+	),
+
+	TP_printk("dev %s group %u",
+		  jbd2_dev_to_name(__entry->dev), __entry->group)
+);
+
+DEFINE_EVENT(ext4__bitmap_load, ext4_mb_bitmap_load,
+
+	TP_PROTO(struct super_block *sb, unsigned long group),
+
+	TP_ARGS(sb, group)
+);
+
+DEFINE_EVENT(ext4__bitmap_load, ext4_mb_buddy_bitmap_load,
+
+	TP_PROTO(struct super_block *sb, unsigned long group),
+
+	TP_ARGS(sb, group)
+);
 
 #endif /* _TRACE_EXT4_H */
 
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 88c59c13..3d685d1 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -62,10 +62,13 @@
 		struct trace_entry	ent;				\
 		tstruct							\
 		char			__data[0];			\
-	};
+	};								\
+									\
+	static struct ftrace_event_class event_class_##name;
+
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, name, proto, args)	\
-	static struct ftrace_event_call			\
+	static struct ftrace_event_call	__used		\
 	__attribute__((__aligned__(4))) event_##name
 
 #undef DEFINE_EVENT_PRINT
@@ -147,7 +150,7 @@
  *
  *	entry = iter->ent;
  *
- *	if (entry->type != event_<call>.id) {
+ *	if (entry->type != event_<call>->event.type) {
  *		WARN_ON_ONCE(1);
  *		return TRACE_TYPE_UNHANDLED;
  *	}
@@ -206,18 +209,22 @@
 #undef DECLARE_EVENT_CLASS
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
 static notrace enum print_line_t					\
-ftrace_raw_output_id_##call(int event_id, const char *name,		\
-			    struct trace_iterator *iter, int flags)	\
+ftrace_raw_output_##call(struct trace_iterator *iter, int flags,	\
+			 struct trace_event *trace_event)		\
 {									\
+	struct ftrace_event_call *event;				\
 	struct trace_seq *s = &iter->seq;				\
 	struct ftrace_raw_##call *field;				\
 	struct trace_entry *entry;					\
 	struct trace_seq *p;						\
 	int ret;							\
 									\
+	event = container_of(trace_event, struct ftrace_event_call,	\
+			     event);					\
+									\
 	entry = iter->ent;						\
 									\
-	if (entry->type != event_id) {					\
+	if (entry->type != event->event.type) {				\
 		WARN_ON_ONCE(1);					\
 		return TRACE_TYPE_UNHANDLED;				\
 	}								\
@@ -226,7 +233,7 @@
 									\
 	p = &get_cpu_var(ftrace_event_seq);				\
 	trace_seq_init(p);						\
-	ret = trace_seq_printf(s, "%s: ", name);			\
+	ret = trace_seq_printf(s, "%s: ", event->name);			\
 	if (ret)							\
 		ret = trace_seq_printf(s, print);			\
 	put_cpu();							\
@@ -234,21 +241,16 @@
 		return TRACE_TYPE_PARTIAL_LINE;				\
 									\
 	return TRACE_TYPE_HANDLED;					\
-}
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args)			\
-static notrace enum print_line_t					\
-ftrace_raw_output_##name(struct trace_iterator *iter, int flags)	\
-{									\
-	return ftrace_raw_output_id_##template(event_##name.id,		\
-					       #name, iter, flags);	\
-}
+}									\
+static struct trace_event_functions ftrace_event_type_funcs_##call = {	\
+	.trace			= ftrace_raw_output_##call,		\
+};
 
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, call, proto, args, print)		\
 static notrace enum print_line_t					\
-ftrace_raw_output_##call(struct trace_iterator *iter, int flags)	\
+ftrace_raw_output_##call(struct trace_iterator *iter, int flags,	\
+			 struct trace_event *event)			\
 {									\
 	struct trace_seq *s = &iter->seq;				\
 	struct ftrace_raw_##template *field;				\
@@ -258,7 +260,7 @@
 									\
 	entry = iter->ent;						\
 									\
-	if (entry->type != event_##call.id) {				\
+	if (entry->type != event_##call.event.type) {			\
 		WARN_ON_ONCE(1);					\
 		return TRACE_TYPE_UNHANDLED;				\
 	}								\
@@ -275,7 +277,10 @@
 		return TRACE_TYPE_PARTIAL_LINE;				\
 									\
 	return TRACE_TYPE_HANDLED;					\
-}
+}									\
+static struct trace_event_functions ftrace_event_type_funcs_##call = {	\
+	.trace			= ftrace_raw_output_##call,		\
+};
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
@@ -381,80 +386,18 @@
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
-#ifdef CONFIG_PERF_EVENTS
-
-/*
- * Generate the functions needed for tracepoint perf_event support.
- *
- * NOTE: The insertion profile callback (ftrace_profile_<call>) is defined later
- *
- * static int ftrace_profile_enable_<call>(void)
- * {
- * 	return register_trace_<call>(ftrace_profile_<call>);
- * }
- *
- * static void ftrace_profile_disable_<call>(void)
- * {
- * 	unregister_trace_<call>(ftrace_profile_<call>);
- * }
- *
- */
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args)			\
-									\
-static void perf_trace_##name(proto);					\
-									\
-static notrace int							\
-perf_trace_enable_##name(struct ftrace_event_call *unused)		\
-{									\
-	return register_trace_##name(perf_trace_##name);		\
-}									\
-									\
-static notrace void							\
-perf_trace_disable_##name(struct ftrace_event_call *unused)		\
-{									\
-	unregister_trace_##name(perf_trace_##name);			\
-}
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
-	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-#endif /* CONFIG_PERF_EVENTS */
-
 /*
  * Stage 4 of the trace events.
  *
  * Override the macros in <trace/trace_events.h> to include the following:
  *
- * static void ftrace_event_<call>(proto)
- * {
- *	event_trace_printk(_RET_IP_, "<call>: " <fmt>);
- * }
- *
- * static int ftrace_reg_event_<call>(struct ftrace_event_call *unused)
- * {
- *	return register_trace_<call>(ftrace_event_<call>);
- * }
- *
- * static void ftrace_unreg_event_<call>(struct ftrace_event_call *unused)
- * {
- *	unregister_trace_<call>(ftrace_event_<call>);
- * }
- *
- *
  * For those macros defined with TRACE_EVENT:
  *
  * static struct ftrace_event_call event_<call>;
  *
- * static void ftrace_raw_event_<call>(proto)
+ * static void ftrace_raw_event_<call>(void *__data, proto)
  * {
+ *	struct ftrace_event_call *event_call = __data;
  *	struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
  *	struct ring_buffer_event *event;
  *	struct ftrace_raw_<call> *entry; <-- defined in stage 1
@@ -469,7 +412,7 @@
  *	__data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
  *
  *	event = trace_current_buffer_lock_reserve(&buffer,
- *				  event_<call>.id,
+ *				  event_<call>->event.type,
  *				  sizeof(*entry) + __data_size,
  *				  irq_flags, pc);
  *	if (!event)
@@ -484,43 +427,42 @@
  *						   event, irq_flags, pc);
  * }
  *
- * static int ftrace_raw_reg_event_<call>(struct ftrace_event_call *unused)
- * {
- *	return register_trace_<call>(ftrace_raw_event_<call>);
- * }
- *
- * static void ftrace_unreg_event_<call>(struct ftrace_event_call *unused)
- * {
- *	unregister_trace_<call>(ftrace_raw_event_<call>);
- * }
- *
  * static struct trace_event ftrace_event_type_<call> = {
  *	.trace			= ftrace_raw_output_<call>, <-- stage 2
  * };
  *
  * static const char print_fmt_<call>[] = <TP_printk>;
  *
+ * static struct ftrace_event_class __used event_class_<template> = {
+ *	.system			= "<system>",
+ *	.define_fields		= ftrace_define_fields_<call>,
+ *	.fields			= LIST_HEAD_INIT(event_class_##call.fields),
+ *	.raw_init		= trace_event_raw_init,
+ *	.probe			= ftrace_raw_event_##call,
+ * };
+ *
  * static struct ftrace_event_call __used
  * __attribute__((__aligned__(4)))
  * __attribute__((section("_ftrace_events"))) event_<call> = {
  *	.name			= "<call>",
- *	.system			= "<system>",
- *	.raw_init		= trace_event_raw_init,
- *	.regfunc		= ftrace_reg_event_<call>,
- *	.unregfunc		= ftrace_unreg_event_<call>,
+ *	.class			= event_class_<template>,
+ *	.event			= &ftrace_event_type_<call>,
  *	.print_fmt		= print_fmt_<call>,
- *	.define_fields		= ftrace_define_fields_<call>,
- * }
+ * };
  *
  */
 
 #ifdef CONFIG_PERF_EVENTS
 
+#define _TRACE_PERF_PROTO(call, proto)					\
+	static notrace void						\
+	perf_trace_##call(void *__data, proto);
+
 #define _TRACE_PERF_INIT(call)						\
-	.perf_event_enable = perf_trace_enable_##call,			\
-	.perf_event_disable = perf_trace_disable_##call,
+	.perf_probe		= perf_trace_##call,
 
 #else
+#define _TRACE_PERF_PROTO(call, proto)
 #define _TRACE_PERF_INIT(call)
 #endif /* CONFIG_PERF_EVENTS */
 
@@ -554,9 +496,9 @@
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
 									\
 static notrace void							\
-ftrace_raw_event_id_##call(struct ftrace_event_call *event_call,	\
-				       proto)				\
+ftrace_raw_event_##call(void *__data, proto)				\
 {									\
+	struct ftrace_event_call *event_call = __data;			\
 	struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
 	struct ring_buffer_event *event;				\
 	struct ftrace_raw_##call *entry;				\
@@ -571,7 +513,7 @@
 	__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
 									\
 	event = trace_current_buffer_lock_reserve(&buffer,		\
-				 event_call->id,			\
+				 event_call->event.type,		\
 				 sizeof(*entry) + __data_size,		\
 				 irq_flags, pc);			\
 	if (!event)							\
@@ -586,34 +528,21 @@
 		trace_nowake_buffer_unlock_commit(buffer,		\
 						  event, irq_flags, pc); \
 }
+/*
+ * The ftrace_test_probe is compiled out, it is only here as a build time check
+ * to make sure that if the tracepoint handling changes, the ftrace probe will
+ * fail to compile unless it too is updated.
+ */
 
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, call, proto, args)			\
-									\
-static notrace void ftrace_raw_event_##call(proto)			\
+static inline void ftrace_test_probe_##call(void)			\
 {									\
-	ftrace_raw_event_id_##template(&event_##call, args);		\
-}									\
-									\
-static notrace int							\
-ftrace_raw_reg_event_##call(struct ftrace_event_call *unused)		\
-{									\
-	return register_trace_##call(ftrace_raw_event_##call);		\
-}									\
-									\
-static notrace void							\
-ftrace_raw_unreg_event_##call(struct ftrace_event_call *unused)		\
-{									\
-	unregister_trace_##call(ftrace_raw_event_##call);		\
-}									\
-									\
-static struct trace_event ftrace_event_type_##call = {			\
-	.trace			= ftrace_raw_output_##call,		\
-};
+	check_trace_callback_type_##call(ftrace_raw_event_##template);	\
+}
 
 #undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
-	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
+#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
@@ -630,7 +559,16 @@
 
 #undef DECLARE_EVENT_CLASS
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
-static const char print_fmt_##call[] = print;
+_TRACE_PERF_PROTO(call, PARAMS(proto));					\
+static const char print_fmt_##call[] = print;				\
+static struct ftrace_event_class __used event_class_##call = {		\
+	.system			= __stringify(TRACE_SYSTEM),		\
+	.define_fields		= ftrace_define_fields_##call,		\
+	.fields			= LIST_HEAD_INIT(event_class_##call.fields),\
+	.raw_init		= trace_event_raw_init,			\
+	.probe			= ftrace_raw_event_##call,		\
+	_TRACE_PERF_INIT(call)						\
+};
 
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, call, proto, args)			\
@@ -639,15 +577,10 @@
 __attribute__((__aligned__(4)))						\
 __attribute__((section("_ftrace_events"))) event_##call = {		\
 	.name			= #call,				\
-	.system			= __stringify(TRACE_SYSTEM),		\
-	.event			= &ftrace_event_type_##call,		\
-	.raw_init		= trace_event_raw_init,			\
-	.regfunc		= ftrace_raw_reg_event_##call,		\
-	.unregfunc		= ftrace_raw_unreg_event_##call,	\
+	.class			= &event_class_##template,		\
+	.event.funcs		= &ftrace_event_type_funcs_##template,	\
 	.print_fmt		= print_fmt_##template,			\
-	.define_fields		= ftrace_define_fields_##template,	\
-	_TRACE_PERF_INIT(call)					\
-}
+};
 
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, call, proto, args, print)		\
@@ -658,14 +591,9 @@
 __attribute__((__aligned__(4)))						\
 __attribute__((section("_ftrace_events"))) event_##call = {		\
 	.name			= #call,				\
-	.system			= __stringify(TRACE_SYSTEM),		\
-	.event			= &ftrace_event_type_##call,		\
-	.raw_init		= trace_event_raw_init,			\
-	.regfunc		= ftrace_raw_reg_event_##call,		\
-	.unregfunc		= ftrace_raw_unreg_event_##call,	\
+	.class			= &event_class_##template,		\
+	.event.funcs		= &ftrace_event_type_funcs_##call,	\
 	.print_fmt		= print_fmt_##call,			\
-	.define_fields		= ftrace_define_fields_##template,	\
-	_TRACE_PERF_INIT(call)					\
 }
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -765,17 +693,20 @@
 #undef DECLARE_EVENT_CLASS
 #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
 static notrace void							\
-perf_trace_templ_##call(struct ftrace_event_call *event_call,		\
-			struct pt_regs *__regs, proto)			\
+perf_trace_##call(void *__data, proto)					\
 {									\
+	struct ftrace_event_call *event_call = __data;			\
 	struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
 	struct ftrace_raw_##call *entry;				\
+	struct pt_regs __regs;						\
 	u64 __addr = 0, __count = 1;					\
-	unsigned long irq_flags;					\
+	struct hlist_head *head;					\
 	int __entry_size;						\
 	int __data_size;						\
 	int rctx;							\
 									\
+	perf_fetch_caller_regs(&__regs, 1);				\
+									\
 	__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
 	__entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
 			     sizeof(u64));				\
@@ -784,32 +715,34 @@
 	if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE,		\
 		      "profile buffer not large enough"))		\
 		return;							\
+									\
 	entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare(	\
-		__entry_size, event_call->id, &rctx, &irq_flags);	\
+		__entry_size, event_call->event.type, &__regs, &rctx);	\
 	if (!entry)							\
 		return;							\
+									\
 	tstruct								\
 									\
 	{ assign; }							\
 									\
+	head = per_cpu_ptr(event_call->perf_events, smp_processor_id());\
 	perf_trace_buf_submit(entry, __entry_size, rctx, __addr,	\
-			       __count, irq_flags, __regs);		\
+		__count, &__regs, head);				\
 }
 
+/*
+ * This part is compiled out, it is only here as a build time check
+ * to make sure that if the tracepoint handling changes, the
+ * perf probe will fail to compile unless it too is updated.
+ */
 #undef DEFINE_EVENT
 #define DEFINE_EVENT(template, call, proto, args)			\
-static notrace void perf_trace_##call(proto)				\
+static inline void perf_test_probe_##call(void)				\
 {									\
-	struct ftrace_event_call *event_call = &event_##call;		\
-	struct pt_regs *__regs = &get_cpu_var(perf_trace_regs);		\
-									\
-	perf_fetch_caller_regs(__regs, 1);				\
-									\
-	perf_trace_templ_##template(event_call, __regs, args);		\
-									\
-	put_cpu_var(perf_trace_regs);					\
+	check_trace_callback_type_##call(perf_trace_##template);	\
 }
 
+
 #undef DEFINE_EVENT_PRINT
 #define DEFINE_EVENT_PRINT(template, name, proto, args, print)	\
 	DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index e5e5f48..257e089 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -25,6 +25,8 @@
 	int		nb_args;
 	const char	**types;
 	const char	**args;
+	struct list_head enter_fields;
+	struct list_head exit_fields;
 
 	struct ftrace_event_call *enter_event;
 	struct ftrace_event_call *exit_event;
@@ -34,16 +36,16 @@
 extern unsigned long arch_syscall_addr(int nr);
 extern int init_syscall_trace(struct ftrace_event_call *call);
 
-extern int syscall_enter_define_fields(struct ftrace_event_call *call);
-extern int syscall_exit_define_fields(struct ftrace_event_call *call);
 extern int reg_event_syscall_enter(struct ftrace_event_call *call);
 extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
 extern int reg_event_syscall_exit(struct ftrace_event_call *call);
 extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
 extern int
 ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
-enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
-enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
+enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags,
+				      struct trace_event *event);
+enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags,
+				     struct trace_event *event);
 #endif
 
 #ifdef CONFIG_PERF_EVENTS
diff --git a/ipc/sem.c b/ipc/sem.c
index dbef95b..506c849 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -3,56 +3,6 @@
  * Copyright (C) 1992 Krishna Balasubramanian
  * Copyright (C) 1995 Eric Schenk, Bruno Haible
  *
- * IMPLEMENTATION NOTES ON CODE REWRITE (Eric Schenk, January 1995):
- * This code underwent a massive rewrite in order to solve some problems
- * with the original code. In particular the original code failed to
- * wake up processes that were waiting for semval to go to 0 if the
- * value went to 0 and was then incremented rapidly enough. In solving
- * this problem I have also modified the implementation so that it
- * processes pending operations in a FIFO manner, thus give a guarantee
- * that processes waiting for a lock on the semaphore won't starve
- * unless another locking process fails to unlock.
- * In addition the following two changes in behavior have been introduced:
- * - The original implementation of semop returned the value
- *   last semaphore element examined on success. This does not
- *   match the manual page specifications, and effectively
- *   allows the user to read the semaphore even if they do not
- *   have read permissions. The implementation now returns 0
- *   on success as stated in the manual page.
- * - There is some confusion over whether the set of undo adjustments
- *   to be performed at exit should be done in an atomic manner.
- *   That is, if we are attempting to decrement the semval should we queue
- *   up and wait until we can do so legally?
- *   The original implementation attempted to do this.
- *   The current implementation does not do so. This is because I don't
- *   think it is the right thing (TM) to do, and because I couldn't
- *   see a clean way to get the old behavior with the new design.
- *   The POSIX standard and SVID should be consulted to determine
- *   what behavior is mandated.
- *
- * Further notes on refinement (Christoph Rohland, December 1998):
- * - The POSIX standard says, that the undo adjustments simply should
- *   redo. So the current implementation is o.K.
- * - The previous code had two flaws:
- *   1) It actively gave the semaphore to the next waiting process
- *      sleeping on the semaphore. Since this process did not have the
- *      cpu this led to many unnecessary context switches and bad
- *      performance. Now we only check which process should be able to
- *      get the semaphore and if this process wants to reduce some
- *      semaphore value we simply wake it up without doing the
- *      operation. So it has to try to get it later. Thus e.g. the
- *      running process may reacquire the semaphore during the current
- *      time slice. If it only waits for zero or increases the semaphore,
- *      we do the operation in advance and wake it up.
- *   2) It did not wake up all zero waiting processes. We try to do
- *      better but only get the semops right which only wait for zero or
- *      increase. If there are decrement operations in the operations
- *      array we do the same as before.
- *
- * With the incarnation of O(1) scheduler, it becomes unnecessary to perform
- * check/retry algorithm for waking up blocked processes as the new scheduler
- * is better at handling thread switch than the old one.
- *
  * /proc/sysvipc/sem support (c) 1999 Dragos Acostachioaie <dragos@iname.com>
  *
  * SMP-threaded, sysctl's added
@@ -61,6 +11,8 @@
  * (c) 2001 Red Hat Inc
  * Lockless wakeup
  * (c) 2003 Manfred Spraul <manfred@colorfullife.com>
+ * Further wakeup optimizations, documentation
+ * (c) 2010 Manfred Spraul <manfred@colorfullife.com>
  *
  * support for audit of ipc object properties and permission changes
  * Dustin Kirkland <dustin.kirkland@us.ibm.com>
@@ -68,6 +20,57 @@
  * namespaces support
  * OpenVZ, SWsoft Inc.
  * Pavel Emelianov <xemul@openvz.org>
+ *
+ * Implementation notes: (May 2010)
+ * This file implements System V semaphores.
+ *
+ * User space visible behavior:
+ * - FIFO ordering for semop() operations (just FIFO, not starvation
+ *   protection)
+ * - multiple semaphore operations that alter the same semaphore in
+ *   one semop() are handled.
+ * - sem_ctime (time of last semctl()) is updated in the IPC_SET, SETVAL and
+ *   SETALL calls.
+ * - two Linux specific semctl() commands: SEM_STAT, SEM_INFO.
+ * - undo adjustments at process exit are limited to 0..SEMVMX.
+ * - namespace are supported.
+ * - SEMMSL, SEMMNS, SEMOPM and SEMMNI can be configured at runtine by writing
+ *   to /proc/sys/kernel/sem.
+ * - statistics about the usage are reported in /proc/sysvipc/sem.
+ *
+ * Internals:
+ * - scalability:
+ *   - all global variables are read-mostly.
+ *   - semop() calls and semctl(RMID) are synchronized by RCU.
+ *   - most operations do write operations (actually: spin_lock calls) to
+ *     the per-semaphore array structure.
+ *   Thus: Perfect SMP scaling between independent semaphore arrays.
+ *         If multiple semaphores in one array are used, then cache line
+ *         trashing on the semaphore array spinlock will limit the scaling.
+ * - semncnt and semzcnt are calculated on demand in count_semncnt() and
+ *   count_semzcnt()
+ * - the task that performs a successful semop() scans the list of all
+ *   sleeping tasks and completes any pending operations that can be fulfilled.
+ *   Semaphores are actively given to waiting tasks (necessary for FIFO).
+ *   (see update_queue())
+ * - To improve the scalability, the actual wake-up calls are performed after
+ *   dropping all locks. (see wake_up_sem_queue_prepare(),
+ *   wake_up_sem_queue_do())
+ * - All work is done by the waker, the woken up task does not have to do
+ *   anything - not even acquiring a lock or dropping a refcount.
+ * - A woken up task may not even touch the semaphore array anymore, it may
+ *   have been destroyed already by a semctl(RMID).
+ * - The synchronizations between wake-ups due to a timeout/signal and a
+ *   wake-up due to a completed semaphore operation is achieved by using an
+ *   intermediate state (IN_WAKEUP).
+ * - UNDO values are stored in an array (one per process and per
+ *   semaphore array, lazily allocated). For backwards compatibility, multiple
+ *   modes for the UNDO variables are supported (per process, per thread)
+ *   (see copy_semundo, CLONE_SYSVSEM)
+ * - There are two lists of the pending operations: a per-array list
+ *   and per-semaphore list (stored in the array). This allows to achieve FIFO
+ *   ordering without always scanning all pending operations.
+ *   The worst-case behavior is nevertheless O(N^2) for N wakeups.
  */
 
 #include <linux/slab.h>
@@ -381,7 +384,6 @@
 		sop--;
 	}
 	
-	sma->sem_otime = get_seconds();
 	return 0;
 
 out_of_range:
@@ -404,25 +406,51 @@
 	return result;
 }
 
-/*
- * Wake up a process waiting on the sem queue with a given error.
- * The queue is invalid (may not be accessed) after the function returns.
+/** wake_up_sem_queue_prepare(q, error): Prepare wake-up
+ * @q: queue entry that must be signaled
+ * @error: Error value for the signal
+ *
+ * Prepare the wake-up of the queue entry q.
  */
-static void wake_up_sem_queue(struct sem_queue *q, int error)
+static void wake_up_sem_queue_prepare(struct list_head *pt,
+				struct sem_queue *q, int error)
 {
-	/*
-	 * Hold preempt off so that we don't get preempted and have the
-	 * wakee busy-wait until we're scheduled back on. We're holding
-	 * locks here so it may not strictly be needed, however if the
-	 * locks become preemptible then this prevents such a problem.
-	 */
-	preempt_disable();
+	if (list_empty(pt)) {
+		/*
+		 * Hold preempt off so that we don't get preempted and have the
+		 * wakee busy-wait until we're scheduled back on.
+		 */
+		preempt_disable();
+	}
 	q->status = IN_WAKEUP;
-	wake_up_process(q->sleeper);
-	/* hands-off: q can disappear immediately after writing q->status. */
-	smp_wmb();
-	q->status = error;
-	preempt_enable();
+	q->pid = error;
+
+	list_add_tail(&q->simple_list, pt);
+}
+
+/**
+ * wake_up_sem_queue_do(pt) - do the actual wake-up
+ * @pt: list of tasks to be woken up
+ *
+ * Do the actual wake-up.
+ * The function is called without any locks held, thus the semaphore array
+ * could be destroyed already and the tasks can disappear as soon as the
+ * status is set to the actual return code.
+ */
+static void wake_up_sem_queue_do(struct list_head *pt)
+{
+	struct sem_queue *q, *t;
+	int did_something;
+
+	did_something = !list_empty(pt);
+	list_for_each_entry_safe(q, t, pt, simple_list) {
+		wake_up_process(q->sleeper);
+		/* q can disappear immediately after writing q->status. */
+		smp_wmb();
+		q->status = q->pid;
+	}
+	if (did_something)
+		preempt_enable();
 }
 
 static void unlink_queue(struct sem_array *sma, struct sem_queue *q)
@@ -434,22 +462,90 @@
 		sma->complex_count--;
 }
 
+/** check_restart(sma, q)
+ * @sma: semaphore array
+ * @q: the operation that just completed
+ *
+ * update_queue is O(N^2) when it restarts scanning the whole queue of
+ * waiting operations. Therefore this function checks if the restart is
+ * really necessary. It is called after a previously waiting operation
+ * was completed.
+ */
+static int check_restart(struct sem_array *sma, struct sem_queue *q)
+{
+	struct sem *curr;
+	struct sem_queue *h;
+
+	/* if the operation didn't modify the array, then no restart */
+	if (q->alter == 0)
+		return 0;
+
+	/* pending complex operations are too difficult to analyse */
+	if (sma->complex_count)
+		return 1;
+
+	/* we were a sleeping complex operation. Too difficult */
+	if (q->nsops > 1)
+		return 1;
+
+	curr = sma->sem_base + q->sops[0].sem_num;
+
+	/* No-one waits on this queue */
+	if (list_empty(&curr->sem_pending))
+		return 0;
+
+	/* the new semaphore value */
+	if (curr->semval) {
+		/* It is impossible that someone waits for the new value:
+		 * - q is a previously sleeping simple operation that
+		 *   altered the array. It must be a decrement, because
+		 *   simple increments never sleep.
+		 * - The value is not 0, thus wait-for-zero won't proceed.
+		 * - If there are older (higher priority) decrements
+		 *   in the queue, then they have observed the original
+		 *   semval value and couldn't proceed. The operation
+		 *   decremented to value - thus they won't proceed either.
+		 */
+		BUG_ON(q->sops[0].sem_op >= 0);
+		return 0;
+	}
+	/*
+	 * semval is 0. Check if there are wait-for-zero semops.
+	 * They must be the first entries in the per-semaphore simple queue
+	 */
+	h = list_first_entry(&curr->sem_pending, struct sem_queue, simple_list);
+	BUG_ON(h->nsops != 1);
+	BUG_ON(h->sops[0].sem_num != q->sops[0].sem_num);
+
+	/* Yes, there is a wait-for-zero semop. Restart */
+	if (h->sops[0].sem_op == 0)
+		return 1;
+
+	/* Again - no-one is waiting for the new value. */
+	return 0;
+}
+
 
 /**
  * update_queue(sma, semnum): Look for tasks that can be completed.
  * @sma: semaphore array.
  * @semnum: semaphore that was modified.
+ * @pt: list head for the tasks that must be woken up.
  *
  * update_queue must be called after a semaphore in a semaphore array
  * was modified. If multiple semaphore were modified, then @semnum
  * must be set to -1.
+ * The tasks that must be woken up are added to @pt. The return code
+ * is stored in q->pid.
+ * The function return 1 if at least one semop was completed successfully.
  */
-static void update_queue(struct sem_array *sma, int semnum)
+static int update_queue(struct sem_array *sma, int semnum, struct list_head *pt)
 {
 	struct sem_queue *q;
 	struct list_head *walk;
 	struct list_head *pending_list;
 	int offset;
+	int semop_completed = 0;
 
 	/* if there are complex operations around, then knowing the semaphore
 	 * that was modified doesn't help us. Assume that multiple semaphores
@@ -469,7 +565,7 @@
 again:
 	walk = pending_list->next;
 	while (walk != pending_list) {
-		int error, alter;
+		int error, restart;
 
 		q = (struct sem_queue *)((char *)walk - offset);
 		walk = walk->next;
@@ -494,22 +590,58 @@
 
 		unlink_queue(sma, q);
 
-		/*
-		 * The next operation that must be checked depends on the type
-		 * of the completed operation:
-		 * - if the operation modified the array, then restart from the
-		 *   head of the queue and check for threads that might be
-		 *   waiting for the new semaphore values.
-		 * - if the operation didn't modify the array, then just
-		 *   continue.
-		 */
-		alter = q->alter;
-		wake_up_sem_queue(q, error);
-		if (alter && !error)
+		if (error) {
+			restart = 0;
+		} else {
+			semop_completed = 1;
+			restart = check_restart(sma, q);
+		}
+
+		wake_up_sem_queue_prepare(pt, q, error);
+		if (restart)
 			goto again;
 	}
+	return semop_completed;
 }
 
+/**
+ * do_smart_update(sma, sops, nsops, otime, pt) - optimized update_queue
+ * @sma: semaphore array
+ * @sops: operations that were performed
+ * @nsops: number of operations
+ * @otime: force setting otime
+ * @pt: list head of the tasks that must be woken up.
+ *
+ * do_smart_update() does the required called to update_queue, based on the
+ * actual changes that were performed on the semaphore array.
+ * Note that the function does not do the actual wake-up: the caller is
+ * responsible for calling wake_up_sem_queue_do(@pt).
+ * It is safe to perform this call after dropping all locks.
+ */
+static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsops,
+			int otime, struct list_head *pt)
+{
+	int i;
+
+	if (sma->complex_count || sops == NULL) {
+		if (update_queue(sma, -1, pt))
+			otime = 1;
+		goto done;
+	}
+
+	for (i = 0; i < nsops; i++) {
+		if (sops[i].sem_op > 0 ||
+			(sops[i].sem_op < 0 &&
+				sma->sem_base[sops[i].sem_num].semval == 0))
+			if (update_queue(sma, sops[i].sem_num, pt))
+				otime = 1;
+	}
+done:
+	if (otime)
+		sma->sem_otime = get_seconds();
+}
+
+
 /* The following counts are associated to each semaphore:
  *   semncnt        number of tasks waiting on semval being nonzero
  *   semzcnt        number of tasks waiting on semval being zero
@@ -572,6 +704,7 @@
 	struct sem_undo *un, *tu;
 	struct sem_queue *q, *tq;
 	struct sem_array *sma = container_of(ipcp, struct sem_array, sem_perm);
+	struct list_head tasks;
 
 	/* Free the existing undo structures for this semaphore set.  */
 	assert_spin_locked(&sma->sem_perm.lock);
@@ -585,15 +718,17 @@
 	}
 
 	/* Wake up all pending processes and let them fail with EIDRM. */
+	INIT_LIST_HEAD(&tasks);
 	list_for_each_entry_safe(q, tq, &sma->sem_pending, list) {
 		unlink_queue(sma, q);
-		wake_up_sem_queue(q, -EIDRM);
+		wake_up_sem_queue_prepare(&tasks, q, -EIDRM);
 	}
 
 	/* Remove the semaphore set from the IDR */
 	sem_rmid(ns, sma);
 	sem_unlock(sma);
 
+	wake_up_sem_queue_do(&tasks);
 	ns->used_sems -= sma->sem_nsems;
 	security_sem_free(sma);
 	ipc_rcu_putref(sma);
@@ -715,11 +850,13 @@
 	ushort fast_sem_io[SEMMSL_FAST];
 	ushort* sem_io = fast_sem_io;
 	int nsems;
+	struct list_head tasks;
 
 	sma = sem_lock_check(ns, semid);
 	if (IS_ERR(sma))
 		return PTR_ERR(sma);
 
+	INIT_LIST_HEAD(&tasks);
 	nsems = sma->sem_nsems;
 
 	err = -EACCES;
@@ -807,7 +944,7 @@
 		}
 		sma->sem_ctime = get_seconds();
 		/* maybe some queued-up processes were waiting for this */
-		update_queue(sma, -1);
+		do_smart_update(sma, NULL, 0, 0, &tasks);
 		err = 0;
 		goto out_unlock;
 	}
@@ -849,13 +986,15 @@
 		curr->sempid = task_tgid_vnr(current);
 		sma->sem_ctime = get_seconds();
 		/* maybe some queued-up processes were waiting for this */
-		update_queue(sma, semnum);
+		do_smart_update(sma, NULL, 0, 0, &tasks);
 		err = 0;
 		goto out_unlock;
 	}
 	}
 out_unlock:
 	sem_unlock(sma);
+	wake_up_sem_queue_do(&tasks);
+
 out_free:
 	if(sem_io != fast_sem_io)
 		ipc_free(sem_io, sizeof(ushort)*nsems);
@@ -1069,7 +1208,7 @@
 	/* step 1: figure out the size of the semaphore array */
 	sma = sem_lock_check(ns, semid);
 	if (IS_ERR(sma))
-		return ERR_PTR(PTR_ERR(sma));
+		return ERR_CAST(sma);
 
 	nsems = sma->sem_nsems;
 	sem_getref_and_unlock(sma);
@@ -1129,6 +1268,7 @@
 	struct sem_queue queue;
 	unsigned long jiffies_left = 0;
 	struct ipc_namespace *ns;
+	struct list_head tasks;
 
 	ns = current->nsproxy->ipc_ns;
 
@@ -1177,6 +1317,8 @@
 	} else
 		un = NULL;
 
+	INIT_LIST_HEAD(&tasks);
+
 	sma = sem_lock_check(ns, semid);
 	if (IS_ERR(sma)) {
 		if (un)
@@ -1225,7 +1367,7 @@
 	error = try_atomic_semop (sma, sops, nsops, un, task_tgid_vnr(current));
 	if (error <= 0) {
 		if (alter && error == 0)
-			update_queue(sma, (nsops == 1) ? sops[0].sem_num : -1);
+			do_smart_update(sma, sops, nsops, 1, &tasks);
 
 		goto out_unlock_free;
 	}
@@ -1302,6 +1444,8 @@
 
 out_unlock_free:
 	sem_unlock(sma);
+
+	wake_up_sem_queue_do(&tasks);
 out_free:
 	if(sops != fast_sops)
 		kfree(sops);
@@ -1362,6 +1506,7 @@
 	for (;;) {
 		struct sem_array *sma;
 		struct sem_undo *un;
+		struct list_head tasks;
 		int semid;
 		int i;
 
@@ -1425,10 +1570,11 @@
 				semaphore->sempid = task_tgid_vnr(current);
 			}
 		}
-		sma->sem_otime = get_seconds();
 		/* maybe some queued-up processes were waiting for this */
-		update_queue(sma, -1);
+		INIT_LIST_HEAD(&tasks);
+		do_smart_update(sma, NULL, 0, 1, &tasks);
 		sem_unlock(sma);
+		wake_up_sem_queue_do(&tasks);
 
 		call_rcu(&un->rcu, free_un);
 	}
diff --git a/ipc/shm.c b/ipc/shm.c
index 1a314c8..52ed77e 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -273,16 +273,13 @@
 	return 0;
 }
 
-static int shm_fsync(struct file *file, struct dentry *dentry, int datasync)
+static int shm_fsync(struct file *file, int datasync)
 {
-	int (*fsync) (struct file *, struct dentry *, int datasync);
 	struct shm_file_data *sfd = shm_file_data(file);
-	int ret = -EINVAL;
 
-	fsync = sfd->file->f_op->fsync;
-	if (fsync)
-		ret = fsync(sfd->file, sfd->file->f_path.dentry, datasync);
-	return ret;
+	if (!sfd->file->f_op->fsync)
+		return -EINVAL;
+	return sfd->file->f_op->fsync(sfd->file, datasync);
 }
 
 static unsigned long shm_get_unmapped_area(struct file *file,
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 2917750..422cb19 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2994,7 +2994,6 @@
 			remove);
 	struct cgroup *cgrp = event->cgrp;
 
-	/* TODO: check return code */
 	event->cft->unregister_event(cgrp, event->cft, event->eventfd);
 
 	eventfd_ctx_put(event->eventfd);
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 124ad9d..8b92539 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -20,6 +20,20 @@
 /* Serializes the updates to cpu_online_mask, cpu_present_mask */
 static DEFINE_MUTEX(cpu_add_remove_lock);
 
+/*
+ * The following two API's must be used when attempting
+ * to serialize the updates to cpu_online_mask, cpu_present_mask.
+ */
+void cpu_maps_update_begin(void)
+{
+	mutex_lock(&cpu_add_remove_lock);
+}
+
+void cpu_maps_update_done(void)
+{
+	mutex_unlock(&cpu_add_remove_lock);
+}
+
 static __cpuinitdata RAW_NOTIFIER_HEAD(cpu_chain);
 
 /* If set, cpu_up and cpu_down will return -EBUSY and do nothing.
@@ -27,6 +41,8 @@
  */
 static int cpu_hotplug_disabled;
 
+#ifdef CONFIG_HOTPLUG_CPU
+
 static struct {
 	struct task_struct *active_writer;
 	struct mutex lock; /* Synchronizes accesses to refcount, */
@@ -41,8 +57,6 @@
 	.refcount = 0,
 };
 
-#ifdef CONFIG_HOTPLUG_CPU
-
 void get_online_cpus(void)
 {
 	might_sleep();
@@ -67,22 +81,6 @@
 }
 EXPORT_SYMBOL_GPL(put_online_cpus);
 
-#endif	/* CONFIG_HOTPLUG_CPU */
-
-/*
- * The following two API's must be used when attempting
- * to serialize the updates to cpu_online_mask, cpu_present_mask.
- */
-void cpu_maps_update_begin(void)
-{
-	mutex_lock(&cpu_add_remove_lock);
-}
-
-void cpu_maps_update_done(void)
-{
-	mutex_unlock(&cpu_add_remove_lock);
-}
-
 /*
  * This ensures that the hotplug operation can begin only when the
  * refcount goes to zero.
@@ -124,6 +122,12 @@
 	cpu_hotplug.active_writer = NULL;
 	mutex_unlock(&cpu_hotplug.lock);
 }
+
+#else /* #if CONFIG_HOTPLUG_CPU */
+static void cpu_hotplug_begin(void) {}
+static void cpu_hotplug_done(void) {}
+#endif	/* #esle #if CONFIG_HOTPLUG_CPU */
+
 /* Need to know about CPUs going up/down? */
 int __ref register_cpu_notifier(struct notifier_block *nb)
 {
@@ -134,8 +138,29 @@
 	return ret;
 }
 
+static int __cpu_notify(unsigned long val, void *v, int nr_to_call,
+			int *nr_calls)
+{
+	int ret;
+
+	ret = __raw_notifier_call_chain(&cpu_chain, val, v, nr_to_call,
+					nr_calls);
+
+	return notifier_to_errno(ret);
+}
+
+static int cpu_notify(unsigned long val, void *v)
+{
+	return __cpu_notify(val, v, -1, NULL);
+}
+
 #ifdef CONFIG_HOTPLUG_CPU
 
+static void cpu_notify_nofail(unsigned long val, void *v)
+{
+	BUG_ON(cpu_notify(val, v));
+}
+
 EXPORT_SYMBOL(register_cpu_notifier);
 
 void __ref unregister_cpu_notifier(struct notifier_block *nb)
@@ -181,8 +206,7 @@
 	if (err < 0)
 		return err;
 
-	raw_notifier_call_chain(&cpu_chain, CPU_DYING | param->mod,
-				param->hcpu);
+	cpu_notify(CPU_DYING | param->mod, param->hcpu);
 
 	if (task_cpu(param->caller) == cpu)
 		move_task_off_dead_cpu(cpu, param->caller);
@@ -212,17 +236,14 @@
 
 	cpu_hotplug_begin();
 	set_cpu_active(cpu, false);
-	err = __raw_notifier_call_chain(&cpu_chain, CPU_DOWN_PREPARE | mod,
-					hcpu, -1, &nr_calls);
-	if (err == NOTIFY_BAD) {
+	err = __cpu_notify(CPU_DOWN_PREPARE | mod, hcpu, -1, &nr_calls);
+	if (err) {
 		set_cpu_active(cpu, true);
 
 		nr_calls--;
-		__raw_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED | mod,
-					  hcpu, nr_calls, NULL);
+		__cpu_notify(CPU_DOWN_FAILED | mod, hcpu, nr_calls, NULL);
 		printk("%s: attempt to take down CPU %u failed\n",
 				__func__, cpu);
-		err = -EINVAL;
 		goto out_release;
 	}
 
@@ -230,9 +251,7 @@
 	if (err) {
 		set_cpu_active(cpu, true);
 		/* CPU didn't die: tell everyone.  Can't complain. */
-		if (raw_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED | mod,
-					    hcpu) == NOTIFY_BAD)
-			BUG();
+		cpu_notify_nofail(CPU_DOWN_FAILED | mod, hcpu);
 
 		goto out_release;
 	}
@@ -246,19 +265,14 @@
 	__cpu_die(cpu);
 
 	/* CPU is completely dead: tell everyone.  Too late to complain. */
-	if (raw_notifier_call_chain(&cpu_chain, CPU_DEAD | mod,
-				    hcpu) == NOTIFY_BAD)
-		BUG();
+	cpu_notify_nofail(CPU_DEAD | mod, hcpu);
 
 	check_for_tasks(cpu);
 
 out_release:
 	cpu_hotplug_done();
-	if (!err) {
-		if (raw_notifier_call_chain(&cpu_chain, CPU_POST_DEAD | mod,
-					    hcpu) == NOTIFY_BAD)
-			BUG();
-	}
+	if (!err)
+		cpu_notify_nofail(CPU_POST_DEAD | mod, hcpu);
 	return err;
 }
 
@@ -293,13 +307,11 @@
 		return -EINVAL;
 
 	cpu_hotplug_begin();
-	ret = __raw_notifier_call_chain(&cpu_chain, CPU_UP_PREPARE | mod, hcpu,
-							-1, &nr_calls);
-	if (ret == NOTIFY_BAD) {
+	ret = __cpu_notify(CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls);
+	if (ret) {
 		nr_calls--;
 		printk("%s: attempt to bring up CPU %u failed\n",
 				__func__, cpu);
-		ret = -EINVAL;
 		goto out_notify;
 	}
 
@@ -312,12 +324,11 @@
 	set_cpu_active(cpu, true);
 
 	/* Now call notifier in preparation. */
-	raw_notifier_call_chain(&cpu_chain, CPU_ONLINE | mod, hcpu);
+	cpu_notify(CPU_ONLINE | mod, hcpu);
 
 out_notify:
 	if (ret != 0)
-		__raw_notifier_call_chain(&cpu_chain,
-				CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL);
+		__cpu_notify(CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL);
 	cpu_hotplug_done();
 
 	return ret;
@@ -383,7 +394,7 @@
 
 int disable_nonboot_cpus(void)
 {
-	int cpu, first_cpu, error;
+	int cpu, first_cpu, error = 0;
 
 	cpu_maps_update_begin();
 	first_cpu = cpumask_first(cpu_online_mask);
@@ -481,7 +492,7 @@
 	if (frozen_cpus != NULL && cpumask_test_cpu(cpu, frozen_cpus))
 		val = CPU_STARTING_FROZEN;
 #endif /* CONFIG_PM_SLEEP_SMP */
-	raw_notifier_call_chain(&cpu_chain, val, (void *)(long)cpu);
+	cpu_notify(val, (void *)(long)cpu);
 }
 
 #endif /* CONFIG_SMP */
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 61d6af7..02b9611 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -2469,7 +2469,8 @@
 }
 
 /**
- * cpuset_mem_spread_node() - On which node to begin search for a page
+ * cpuset_mem_spread_node() - On which node to begin search for a file page
+ * cpuset_slab_spread_node() - On which node to begin search for a slab page
  *
  * If a task is marked PF_SPREAD_PAGE or PF_SPREAD_SLAB (as for
  * tasks in a cpuset with is_spread_page or is_spread_slab set),
@@ -2494,16 +2495,27 @@
  * See kmem_cache_alloc_node().
  */
 
-int cpuset_mem_spread_node(void)
+static int cpuset_spread_node(int *rotor)
 {
 	int node;
 
-	node = next_node(current->cpuset_mem_spread_rotor, current->mems_allowed);
+	node = next_node(*rotor, current->mems_allowed);
 	if (node == MAX_NUMNODES)
 		node = first_node(current->mems_allowed);
-	current->cpuset_mem_spread_rotor = node;
+	*rotor = node;
 	return node;
 }
+
+int cpuset_mem_spread_node(void)
+{
+	return cpuset_spread_node(&current->cpuset_mem_spread_rotor);
+}
+
+int cpuset_slab_spread_node(void)
+{
+	return cpuset_spread_node(&current->cpuset_slab_spread_rotor);
+}
+
 EXPORT_SYMBOL_GPL(cpuset_mem_spread_node);
 
 /**
diff --git a/kernel/cred.c b/kernel/cred.c
index 2c24870..a2d5504 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -347,66 +347,6 @@
 }
 
 /*
- * prepare new credentials for the usermode helper dispatcher
- */
-struct cred *prepare_usermodehelper_creds(void)
-{
-#ifdef CONFIG_KEYS
-	struct thread_group_cred *tgcred = NULL;
-#endif
-	struct cred *new;
-
-#ifdef CONFIG_KEYS
-	tgcred = kzalloc(sizeof(*new->tgcred), GFP_ATOMIC);
-	if (!tgcred)
-		return NULL;
-#endif
-
-	new = kmem_cache_alloc(cred_jar, GFP_ATOMIC);
-	if (!new)
-		goto free_tgcred;
-
-	kdebug("prepare_usermodehelper_creds() alloc %p", new);
-
-	memcpy(new, &init_cred, sizeof(struct cred));
-
-	atomic_set(&new->usage, 1);
-	set_cred_subscribers(new, 0);
-	get_group_info(new->group_info);
-	get_uid(new->user);
-
-#ifdef CONFIG_KEYS
-	new->thread_keyring = NULL;
-	new->request_key_auth = NULL;
-	new->jit_keyring = KEY_REQKEY_DEFL_DEFAULT;
-
-	atomic_set(&tgcred->usage, 1);
-	spin_lock_init(&tgcred->lock);
-	new->tgcred = tgcred;
-#endif
-
-#ifdef CONFIG_SECURITY
-	new->security = NULL;
-#endif
-	if (security_prepare_creds(new, &init_cred, GFP_ATOMIC) < 0)
-		goto error;
-	validate_creds(new);
-
-	BUG_ON(atomic_read(&new->usage) != 1);
-	return new;
-
-error:
-	put_cred(new);
-	return NULL;
-
-free_tgcred:
-#ifdef CONFIG_KEYS
-	kfree(tgcred);
-#endif
-	return NULL;
-}
-
-/*
  * Copy credentials for the new process created by fork()
  *
  * We share if we can, but under some circumstances we have to generate a new
diff --git a/kernel/exit.c b/kernel/exit.c
index 019a284..ceffc67 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -58,11 +58,11 @@
 
 static void exit_mm(struct task_struct * tsk);
 
-static void __unhash_process(struct task_struct *p)
+static void __unhash_process(struct task_struct *p, bool group_dead)
 {
 	nr_threads--;
 	detach_pid(p, PIDTYPE_PID);
-	if (thread_group_leader(p)) {
+	if (group_dead) {
 		detach_pid(p, PIDTYPE_PGID);
 		detach_pid(p, PIDTYPE_SID);
 
@@ -79,10 +79,9 @@
 static void __exit_signal(struct task_struct *tsk)
 {
 	struct signal_struct *sig = tsk->signal;
+	bool group_dead = thread_group_leader(tsk);
 	struct sighand_struct *sighand;
-
-	BUG_ON(!sig);
-	BUG_ON(!atomic_read(&sig->count));
+	struct tty_struct *uninitialized_var(tty);
 
 	sighand = rcu_dereference_check(tsk->sighand,
 					rcu_read_lock_held() ||
@@ -90,14 +89,16 @@
 	spin_lock(&sighand->siglock);
 
 	posix_cpu_timers_exit(tsk);
-	if (atomic_dec_and_test(&sig->count))
+	if (group_dead) {
 		posix_cpu_timers_exit_group(tsk);
-	else {
+		tty = sig->tty;
+		sig->tty = NULL;
+	} else {
 		/*
 		 * If there is any task waiting for the group exit
 		 * then notify it:
 		 */
-		if (sig->group_exit_task && atomic_read(&sig->count) == sig->notify_count)
+		if (sig->notify_count > 0 && !--sig->notify_count)
 			wake_up_process(sig->group_exit_task);
 
 		if (tsk == sig->curr_target)
@@ -123,32 +124,24 @@
 		sig->oublock += task_io_get_oublock(tsk);
 		task_io_accounting_add(&sig->ioac, &tsk->ioac);
 		sig->sum_sched_runtime += tsk->se.sum_exec_runtime;
-		sig = NULL; /* Marker for below. */
 	}
 
-	__unhash_process(tsk);
+	sig->nr_threads--;
+	__unhash_process(tsk, group_dead);
 
 	/*
 	 * Do this under ->siglock, we can race with another thread
 	 * doing sigqueue_free() if we have SIGQUEUE_PREALLOC signals.
 	 */
 	flush_sigqueue(&tsk->pending);
-
-	tsk->signal = NULL;
 	tsk->sighand = NULL;
 	spin_unlock(&sighand->siglock);
 
 	__cleanup_sighand(sighand);
 	clear_tsk_thread_flag(tsk,TIF_SIGPENDING);
-	if (sig) {
+	if (group_dead) {
 		flush_sigqueue(&sig->shared_pending);
-		taskstats_tgid_free(sig);
-		/*
-		 * Make sure ->signal can't go away under rq->lock,
-		 * see account_group_exec_runtime().
-		 */
-		task_rq_unlock_wait(tsk);
-		__cleanup_signal(sig);
+		tty_kref_put(tty);
 	}
 }
 
@@ -856,12 +849,9 @@
 
 	tsk->exit_state = signal == DEATH_REAP ? EXIT_DEAD : EXIT_ZOMBIE;
 
-	/* mt-exec, de_thread() is waiting for us */
-	if (thread_group_leader(tsk) &&
-	    tsk->signal->group_exit_task &&
-	    tsk->signal->notify_count < 0)
+	/* mt-exec, de_thread() is waiting for group leader */
+	if (unlikely(tsk->signal->notify_count < 0))
 		wake_up_process(tsk->signal->group_exit_task);
-
 	write_unlock_irq(&tasklist_lock);
 
 	tracehook_report_death(tsk, signal, cookie, group_dead);
diff --git a/kernel/fork.c b/kernel/fork.c
index 4d57d9e..b6cce14 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -165,6 +165,18 @@
 }
 EXPORT_SYMBOL(free_task);
 
+static inline void free_signal_struct(struct signal_struct *sig)
+{
+	taskstats_tgid_free(sig);
+	kmem_cache_free(signal_cachep, sig);
+}
+
+static inline void put_signal_struct(struct signal_struct *sig)
+{
+	if (atomic_dec_and_test(&sig->sigcnt))
+		free_signal_struct(sig);
+}
+
 void __put_task_struct(struct task_struct *tsk)
 {
 	WARN_ON(!tsk->exit_state);
@@ -173,6 +185,7 @@
 
 	exit_creds(tsk);
 	delayacct_tsk_free(tsk);
+	put_signal_struct(tsk->signal);
 
 	if (!profile_handoff_task(tsk))
 		free_task(tsk);
@@ -864,8 +877,9 @@
 	if (!sig)
 		return -ENOMEM;
 
-	atomic_set(&sig->count, 1);
+	sig->nr_threads = 1;
 	atomic_set(&sig->live, 1);
+	atomic_set(&sig->sigcnt, 1);
 	init_waitqueue_head(&sig->wait_chldexit);
 	if (clone_flags & CLONE_NEWPID)
 		sig->flags |= SIGNAL_UNKILLABLE;
@@ -889,13 +903,6 @@
 	return 0;
 }
 
-void __cleanup_signal(struct signal_struct *sig)
-{
-	thread_group_cputime_free(sig);
-	tty_kref_put(sig->tty);
-	kmem_cache_free(signal_cachep, sig);
-}
-
 static void copy_flags(unsigned long clone_flags, struct task_struct *p)
 {
 	unsigned long new_flags = p->flags;
@@ -1245,8 +1252,9 @@
 	}
 
 	if (clone_flags & CLONE_THREAD) {
-		atomic_inc(&current->signal->count);
+		current->signal->nr_threads++;
 		atomic_inc(&current->signal->live);
+		atomic_inc(&current->signal->sigcnt);
 		p->group_leader = current->group_leader;
 		list_add_tail_rcu(&p->thread_group, &p->group_leader->thread_group);
 	}
@@ -1259,7 +1267,6 @@
 				p->nsproxy->pid_ns->child_reaper = p;
 
 			p->signal->leader_pid = pid;
-			tty_kref_put(p->signal->tty);
 			p->signal->tty = tty_kref_get(current->signal->tty);
 			attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
 			attach_pid(p, PIDTYPE_SID, task_session(current));
@@ -1292,7 +1299,7 @@
 		mmput(p->mm);
 bad_fork_cleanup_signal:
 	if (!(clone_flags & CLONE_THREAD))
-		__cleanup_signal(p->signal);
+		free_signal_struct(p->signal);
 bad_fork_cleanup_sighand:
 	__cleanup_sighand(p->sighand);
 bad_fork_cleanup_fs:
@@ -1327,6 +1334,16 @@
 	return regs;
 }
 
+static inline void init_idle_pids(struct pid_link *links)
+{
+	enum pid_type type;
+
+	for (type = PIDTYPE_PID; type < PIDTYPE_MAX; ++type) {
+		INIT_HLIST_NODE(&links[type].node); /* not really needed */
+		links[type].pid = &init_struct_pid;
+	}
+}
+
 struct task_struct * __cpuinit fork_idle(int cpu)
 {
 	struct task_struct *task;
@@ -1334,8 +1351,10 @@
 
 	task = copy_process(CLONE_VM, 0, idle_regs(&regs), 0, NULL,
 			    &init_struct_pid, 0);
-	if (!IS_ERR(task))
+	if (!IS_ERR(task)) {
+		init_idle_pids(task->pids);
 		init_idle(task, cpu);
+	}
 
 	return task;
 }
@@ -1507,14 +1526,6 @@
 		*flags_ptr |= CLONE_SIGHAND;
 
 	/*
-	 * If unsharing signal handlers and the task was created
-	 * using CLONE_THREAD, then must unshare the thread
-	 */
-	if ((*flags_ptr & CLONE_SIGHAND) &&
-	    (atomic_read(&current->signal->count) > 1))
-		*flags_ptr |= CLONE_THREAD;
-
-	/*
 	 * If unsharing namespace, must also unshare filesystem information.
 	 */
 	if (*flags_ptr & CLONE_NEWNS)
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index b9b134b..5c69e99 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -89,7 +89,7 @@
 
 	do {
 		seq = read_seqbegin(&xtime_lock);
-		xts = current_kernel_time();
+		xts = __current_kernel_time();
 		tom = wall_to_monotonic;
 	} while (read_seqretry(&xtime_lock, seq));
 
diff --git a/kernel/kmod.c b/kernel/kmod.c
index bf0e231..6e9b196 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -116,27 +116,16 @@
 
 	trace_module_request(module_name, wait, _RET_IP_);
 
-	ret = call_usermodehelper(modprobe_path, argv, envp,
-			wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC);
+	ret = call_usermodehelper_fns(modprobe_path, argv, envp,
+			wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC,
+			NULL, NULL, NULL);
+
 	atomic_dec(&kmod_concurrent);
 	return ret;
 }
 EXPORT_SYMBOL(__request_module);
 #endif /* CONFIG_MODULES */
 
-struct subprocess_info {
-	struct work_struct work;
-	struct completion *complete;
-	struct cred *cred;
-	char *path;
-	char **argv;
-	char **envp;
-	enum umh_wait wait;
-	int retval;
-	struct file *stdin;
-	void (*cleanup)(char **argv, char **envp);
-};
-
 /*
  * This is the task which runs the usermode application
  */
@@ -145,36 +134,10 @@
 	struct subprocess_info *sub_info = data;
 	int retval;
 
-	BUG_ON(atomic_read(&sub_info->cred->usage) != 1);
-
-	/* Unblock all signals */
 	spin_lock_irq(&current->sighand->siglock);
 	flush_signal_handlers(current, 1);
-	sigemptyset(&current->blocked);
-	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	/* Install the credentials */
-	commit_creds(sub_info->cred);
-	sub_info->cred = NULL;
-
-	/* Install input pipe when needed */
-	if (sub_info->stdin) {
-		struct files_struct *f = current->files;
-		struct fdtable *fdt;
-		/* no races because files should be private here */
-		sys_close(0);
-		fd_install(0, sub_info->stdin);
-		spin_lock(&f->file_lock);
-		fdt = files_fdtable(f);
-		FD_SET(0, fdt->open_fds);
-		FD_CLR(0, fdt->close_on_exec);
-		spin_unlock(&f->file_lock);
-
-		/* and disallow core files too */
-		current->signal->rlim[RLIMIT_CORE] = (struct rlimit){0, 0};
-	}
-
 	/* We can run anywhere, unlike our parent keventd(). */
 	set_cpus_allowed_ptr(current, cpu_all_mask);
 
@@ -184,9 +147,16 @@
 	 */
 	set_user_nice(current, 0);
 
+	if (sub_info->init) {
+		retval = sub_info->init(sub_info);
+		if (retval)
+			goto fail;
+	}
+
 	retval = kernel_execve(sub_info->path, sub_info->argv, sub_info->envp);
 
 	/* Exec failed? */
+fail:
 	sub_info->retval = retval;
 	do_exit(0);
 }
@@ -194,9 +164,7 @@
 void call_usermodehelper_freeinfo(struct subprocess_info *info)
 {
 	if (info->cleanup)
-		(*info->cleanup)(info->argv, info->envp);
-	if (info->cred)
-		put_cred(info->cred);
+		(*info->cleanup)(info);
 	kfree(info);
 }
 EXPORT_SYMBOL(call_usermodehelper_freeinfo);
@@ -207,16 +175,16 @@
 	struct subprocess_info *sub_info = data;
 	pid_t pid;
 
-	/* Install a handler: if SIGCLD isn't handled sys_wait4 won't
-	 * populate the status, but will return -ECHILD. */
-	allow_signal(SIGCHLD);
+	/* If SIGCLD is ignored sys_wait4 won't populate the status. */
+	spin_lock_irq(&current->sighand->siglock);
+	current->sighand->action[SIGCHLD-1].sa.sa_handler = SIG_DFL;
+	spin_unlock_irq(&current->sighand->siglock);
 
 	pid = kernel_thread(____call_usermodehelper, sub_info, SIGCHLD);
 	if (pid < 0) {
 		sub_info->retval = pid;
 	} else {
-		int ret;
-
+		int ret = -ECHILD;
 		/*
 		 * Normally it is bogus to call wait4() from in-kernel because
 		 * wait4() wants to write the exit code to a userspace address.
@@ -237,10 +205,7 @@
 			sub_info->retval = ret;
 	}
 
-	if (sub_info->wait == UMH_NO_WAIT)
-		call_usermodehelper_freeinfo(sub_info);
-	else
-		complete(sub_info->complete);
+	complete(sub_info->complete);
 	return 0;
 }
 
@@ -249,15 +214,13 @@
 {
 	struct subprocess_info *sub_info =
 		container_of(work, struct subprocess_info, work);
-	pid_t pid;
 	enum umh_wait wait = sub_info->wait;
-
-	BUG_ON(atomic_read(&sub_info->cred->usage) != 1);
+	pid_t pid;
 
 	/* CLONE_VFORK: wait until the usermode helper has execve'd
 	 * successfully We need the data structures to stay around
 	 * until that is done.  */
-	if (wait == UMH_WAIT_PROC || wait == UMH_NO_WAIT)
+	if (wait == UMH_WAIT_PROC)
 		pid = kernel_thread(wait_for_helper, sub_info,
 				    CLONE_FS | CLONE_FILES | SIGCHLD);
 	else
@@ -266,15 +229,16 @@
 
 	switch (wait) {
 	case UMH_NO_WAIT:
+		call_usermodehelper_freeinfo(sub_info);
 		break;
 
 	case UMH_WAIT_PROC:
 		if (pid > 0)
 			break;
-		sub_info->retval = pid;
 		/* FALLTHROUGH */
-
 	case UMH_WAIT_EXEC:
+		if (pid < 0)
+			sub_info->retval = pid;
 		complete(sub_info->complete);
 	}
 }
@@ -376,80 +340,37 @@
 	sub_info->path = path;
 	sub_info->argv = argv;
 	sub_info->envp = envp;
-	sub_info->cred = prepare_usermodehelper_creds();
-	if (!sub_info->cred) {
-		kfree(sub_info);
-		return NULL;
-	}
-
   out:
 	return sub_info;
 }
 EXPORT_SYMBOL(call_usermodehelper_setup);
 
 /**
- * call_usermodehelper_setkeys - set the session keys for usermode helper
- * @info: a subprocess_info returned by call_usermodehelper_setup
- * @session_keyring: the session keyring for the process
- */
-void call_usermodehelper_setkeys(struct subprocess_info *info,
-				 struct key *session_keyring)
-{
-#ifdef CONFIG_KEYS
-	struct thread_group_cred *tgcred = info->cred->tgcred;
-	key_put(tgcred->session_keyring);
-	tgcred->session_keyring = key_get(session_keyring);
-#else
-	BUG();
-#endif
-}
-EXPORT_SYMBOL(call_usermodehelper_setkeys);
-
-/**
- * call_usermodehelper_setcleanup - set a cleanup function
+ * call_usermodehelper_setfns - set a cleanup/init function
  * @info: a subprocess_info returned by call_usermodehelper_setup
  * @cleanup: a cleanup function
+ * @init: an init function
+ * @data: arbitrary context sensitive data
  *
- * The cleanup function is just befor ethe subprocess_info is about to
+ * The init function is used to customize the helper process prior to
+ * exec.  A non-zero return code causes the process to error out, exit,
+ * and return the failure to the calling process
+ *
+ * The cleanup function is just before ethe subprocess_info is about to
  * be freed.  This can be used for freeing the argv and envp.  The
  * Function must be runnable in either a process context or the
  * context in which call_usermodehelper_exec is called.
  */
-void call_usermodehelper_setcleanup(struct subprocess_info *info,
-				    void (*cleanup)(char **argv, char **envp))
+void call_usermodehelper_setfns(struct subprocess_info *info,
+		    int (*init)(struct subprocess_info *info),
+		    void (*cleanup)(struct subprocess_info *info),
+		    void *data)
 {
 	info->cleanup = cleanup;
+	info->init = init;
+	info->data = data;
 }
-EXPORT_SYMBOL(call_usermodehelper_setcleanup);
-
-/**
- * call_usermodehelper_stdinpipe - set up a pipe to be used for stdin
- * @sub_info: a subprocess_info returned by call_usermodehelper_setup
- * @filp: set to the write-end of a pipe
- *
- * This constructs a pipe, and sets the read end to be the stdin of the
- * subprocess, and returns the write-end in *@filp.
- */
-int call_usermodehelper_stdinpipe(struct subprocess_info *sub_info,
-				  struct file **filp)
-{
-	struct file *f;
-
-	f = create_write_pipe(0);
-	if (IS_ERR(f))
-		return PTR_ERR(f);
-	*filp = f;
-
-	f = create_read_pipe(f, 0);
-	if (IS_ERR(f)) {
-		free_write_pipe(*filp);
-		return PTR_ERR(f);
-	}
-	sub_info->stdin = f;
-
-	return 0;
-}
-EXPORT_SYMBOL(call_usermodehelper_stdinpipe);
+EXPORT_SYMBOL(call_usermodehelper_setfns);
 
 /**
  * call_usermodehelper_exec - start a usermode application
@@ -469,9 +390,6 @@
 	DECLARE_COMPLETION_ONSTACK(done);
 	int retval = 0;
 
-	BUG_ON(atomic_read(&sub_info->cred->usage) != 1);
-	validate_creds(sub_info->cred);
-
 	helper_lock();
 	if (sub_info->path[0] == '\0')
 		goto out;
@@ -498,41 +416,6 @@
 }
 EXPORT_SYMBOL(call_usermodehelper_exec);
 
-/**
- * call_usermodehelper_pipe - call a usermode helper process with a pipe stdin
- * @path: path to usermode executable
- * @argv: arg vector for process
- * @envp: environment for process
- * @filp: set to the write-end of a pipe
- *
- * This is a simple wrapper which executes a usermode-helper function
- * with a pipe as stdin.  It is implemented entirely in terms of
- * lower-level call_usermodehelper_* functions.
- */
-int call_usermodehelper_pipe(char *path, char **argv, char **envp,
-			     struct file **filp)
-{
-	struct subprocess_info *sub_info;
-	int ret;
-
-	sub_info = call_usermodehelper_setup(path, argv, envp, GFP_KERNEL);
-	if (sub_info == NULL)
-		return -ENOMEM;
-
-	ret = call_usermodehelper_stdinpipe(sub_info, filp);
-	if (ret < 0) {
-		call_usermodehelper_freeinfo(sub_info);
-		return ret;
-	}
-
-	ret = call_usermodehelper_exec(sub_info, UMH_WAIT_EXEC);
-	if (ret < 0)	/* Failed to execute helper, close pipe */
-		filp_close(*filp, NULL);
-
-	return ret;
-}
-EXPORT_SYMBOL(call_usermodehelper_pipe);
-
 void __init usermodehelper_init(void)
 {
 	khelper_wq = create_singlethread_workqueue("khelper");
diff --git a/kernel/module.c b/kernel/module.c
index 625985e..333fbcc 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -563,26 +563,33 @@
 	struct module_use *use;
 	int no_warn, err;
 
-	if (b == NULL || already_uses(a, b))
-		return 0;
+	if (b == NULL || already_uses(a, b)) return 1;
 
 	/* If we're interrupted or time out, we fail. */
-	err = strong_try_module_get(b);
+	if (wait_event_interruptible_timeout(
+		    module_wq, (err = strong_try_module_get(b)) != -EBUSY,
+		    30 * HZ) <= 0) {
+		printk("%s: gave up waiting for init of module %s.\n",
+		       a->name, b->name);
+		return 0;
+	}
+
+	/* If strong_try_module_get() returned a different error, we fail. */
 	if (err)
-		return err;
+		return 0;
 
 	DEBUGP("Allocating new usage for %s.\n", a->name);
 	use = kmalloc(sizeof(*use), GFP_ATOMIC);
 	if (!use) {
 		printk("%s: out of memory loading\n", a->name);
 		module_put(b);
-		return -ENOMEM;
+		return 0;
 	}
 
 	use->module_which_uses = a;
 	list_add(&use->list, &b->modules_which_use_me);
 	no_warn = sysfs_create_link(b->holders_dir, &a->mkobj.kobj, a->name);
-	return 0;
+	return 1;
 }
 EXPORT_SYMBOL_GPL(use_module);
 
@@ -875,7 +882,7 @@
 
 int use_module(struct module *a, struct module *b)
 {
-	return strong_try_module_get(b);
+	return strong_try_module_get(b) == 0;
 }
 EXPORT_SYMBOL_GPL(use_module);
 
@@ -1046,39 +1053,17 @@
 	struct module *owner;
 	const struct kernel_symbol *sym;
 	const unsigned long *crc;
-	DEFINE_WAIT(wait);
-	int err;
-	long timeleft = 30 * HZ;
 
-again:
 	sym = find_symbol(name, &owner, &crc,
 			  !(mod->taints & (1 << TAINT_PROPRIETARY_MODULE)), true);
-	if (!sym)
-		return NULL;
-
-	if (!check_version(sechdrs, versindex, name, mod, crc, owner))
-		return NULL;
-
-	prepare_to_wait(&module_wq, &wait, TASK_INTERRUPTIBLE);
-	err = use_module(mod, owner);
-	if (likely(!err) || err != -EBUSY || signal_pending(current)) {
-		finish_wait(&module_wq, &wait);
-		return err ? NULL : sym;
+	/* use_module can fail due to OOM,
+	   or module initialization or unloading */
+	if (sym) {
+		if (!check_version(sechdrs, versindex, name, mod, crc, owner)
+		    || !use_module(mod, owner))
+			sym = NULL;
 	}
-
-	/* Module is still loading.  Drop lock and wait. */
-	mutex_unlock(&module_mutex);
-	timeleft = schedule_timeout(timeleft);
-	mutex_lock(&module_mutex);
-	finish_wait(&module_wq, &wait);
-
-	/* Module might be gone entirely, or replaced.  Re-lookup. */
-	if (timeleft)
-		goto again;
-
-	printk(KERN_WARNING "%s: gave up waiting for init of module %s.\n",
-	       mod->name, owner->name);
-	return NULL;
+	return sym;
 }
 
 /*
diff --git a/kernel/padata.c b/kernel/padata.c
index b1c9857..fdd8ae6 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -659,7 +659,7 @@
 		err = __padata_add_cpu(pinst, cpu);
 		mutex_unlock(&pinst->lock);
 		if (err)
-			return NOTIFY_BAD;
+			return notifier_from_errno(err);
 		break;
 
 	case CPU_DOWN_PREPARE:
@@ -670,7 +670,7 @@
 		err = __padata_remove_cpu(pinst, cpu);
 		mutex_unlock(&pinst->lock);
 		if (err)
-			return NOTIFY_BAD;
+			return notifier_from_errno(err);
 		break;
 
 	case CPU_UP_CANCELED:
diff --git a/kernel/panic.c b/kernel/panic.c
index dbe13db..3b16cd9 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -87,6 +87,7 @@
 	 */
 	preempt_disable();
 
+	console_verbose();
 	bust_spinlocks(1);
 	va_start(args, fmt);
 	vsnprintf(buf, sizeof(buf), fmt, args);
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index a4fa381..bd7ce8c 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -2297,11 +2297,6 @@
 	rcu_read_unlock();
 }
 
-static unsigned long perf_data_size(struct perf_mmap_data *data)
-{
-	return data->nr_pages << (PAGE_SHIFT + data->data_order);
-}
-
 #ifndef CONFIG_PERF_USE_VMALLOC
 
 /*
@@ -2320,6 +2315,19 @@
 	return virt_to_page(data->data_pages[pgoff - 1]);
 }
 
+static void *perf_mmap_alloc_page(int cpu)
+{
+	struct page *page;
+	int node;
+
+	node = (cpu == -1) ? cpu : cpu_to_node(cpu);
+	page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
+	if (!page)
+		return NULL;
+
+	return page_address(page);
+}
+
 static struct perf_mmap_data *
 perf_mmap_data_alloc(struct perf_event *event, int nr_pages)
 {
@@ -2336,17 +2344,16 @@
 	if (!data)
 		goto fail;
 
-	data->user_page = (void *)get_zeroed_page(GFP_KERNEL);
+	data->user_page = perf_mmap_alloc_page(event->cpu);
 	if (!data->user_page)
 		goto fail_user_page;
 
 	for (i = 0; i < nr_pages; i++) {
-		data->data_pages[i] = (void *)get_zeroed_page(GFP_KERNEL);
+		data->data_pages[i] = perf_mmap_alloc_page(event->cpu);
 		if (!data->data_pages[i])
 			goto fail_data_pages;
 	}
 
-	data->data_order = 0;
 	data->nr_pages = nr_pages;
 
 	return data;
@@ -2382,6 +2389,11 @@
 	kfree(data);
 }
 
+static inline int page_order(struct perf_mmap_data *data)
+{
+	return 0;
+}
+
 #else
 
 /*
@@ -2390,10 +2402,15 @@
  * Required for architectures that have d-cache aliasing issues.
  */
 
+static inline int page_order(struct perf_mmap_data *data)
+{
+	return data->page_order;
+}
+
 static struct page *
 perf_mmap_to_page(struct perf_mmap_data *data, unsigned long pgoff)
 {
-	if (pgoff > (1UL << data->data_order))
+	if (pgoff > (1UL << page_order(data)))
 		return NULL;
 
 	return vmalloc_to_page((void *)data->user_page + pgoff * PAGE_SIZE);
@@ -2413,7 +2430,7 @@
 	int i, nr;
 
 	data = container_of(work, struct perf_mmap_data, work);
-	nr = 1 << data->data_order;
+	nr = 1 << page_order(data);
 
 	base = data->user_page;
 	for (i = 0; i < nr + 1; i++)
@@ -2452,7 +2469,7 @@
 
 	data->user_page = all_buf;
 	data->data_pages[0] = all_buf + PAGE_SIZE;
-	data->data_order = ilog2(nr_pages);
+	data->page_order = ilog2(nr_pages);
 	data->nr_pages = 1;
 
 	return data;
@@ -2466,6 +2483,11 @@
 
 #endif
 
+static unsigned long perf_data_size(struct perf_mmap_data *data)
+{
+	return data->nr_pages << (PAGE_SHIFT + page_order(data));
+}
+
 static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
 	struct perf_event *event = vma->vm_file->private_data;
@@ -2506,8 +2528,6 @@
 {
 	long max_size = perf_data_size(data);
 
-	atomic_set(&data->lock, -1);
-
 	if (event->attr.watermark) {
 		data->watermark = min_t(long, max_size,
 					event->attr.wakeup_watermark);
@@ -2580,6 +2600,14 @@
 	long user_extra, extra;
 	int ret = 0;
 
+	/*
+	 * Don't allow mmap() of inherited per-task counters. This would
+	 * create a performance issue due to all children writing to the
+	 * same buffer.
+	 */
+	if (event->cpu == -1 && event->attr.inherit)
+		return -EINVAL;
+
 	if (!(vma->vm_flags & VM_SHARED))
 		return -EINVAL;
 
@@ -2885,120 +2913,80 @@
 }
 
 /*
- * Curious locking construct.
- *
  * We need to ensure a later event_id doesn't publish a head when a former
- * event_id isn't done writing. However since we need to deal with NMIs we
+ * event isn't done writing. However since we need to deal with NMIs we
  * cannot fully serialize things.
  *
- * What we do is serialize between CPUs so we only have to deal with NMI
- * nesting on a single CPU.
- *
  * We only publish the head (and generate a wakeup) when the outer-most
- * event_id completes.
+ * event completes.
  */
-static void perf_output_lock(struct perf_output_handle *handle)
+static void perf_output_get_handle(struct perf_output_handle *handle)
 {
 	struct perf_mmap_data *data = handle->data;
-	int cur, cpu = get_cpu();
 
-	handle->locked = 0;
-
-	for (;;) {
-		cur = atomic_cmpxchg(&data->lock, -1, cpu);
-		if (cur == -1) {
-			handle->locked = 1;
-			break;
-		}
-		if (cur == cpu)
-			break;
-
-		cpu_relax();
-	}
+	preempt_disable();
+	local_inc(&data->nest);
+	handle->wakeup = local_read(&data->wakeup);
 }
 
-static void perf_output_unlock(struct perf_output_handle *handle)
+static void perf_output_put_handle(struct perf_output_handle *handle)
 {
 	struct perf_mmap_data *data = handle->data;
 	unsigned long head;
-	int cpu;
-
-	data->done_head = data->head;
-
-	if (!handle->locked)
-		goto out;
 
 again:
-	/*
-	 * The xchg implies a full barrier that ensures all writes are done
-	 * before we publish the new head, matched by a rmb() in userspace when
-	 * reading this position.
-	 */
-	while ((head = atomic_long_xchg(&data->done_head, 0)))
-		data->user_page->data_head = head;
+	head = local_read(&data->head);
 
 	/*
-	 * NMI can happen here, which means we can miss a done_head update.
+	 * IRQ/NMI can happen here, which means we can miss a head update.
 	 */
 
-	cpu = atomic_xchg(&data->lock, -1);
-	WARN_ON_ONCE(cpu != smp_processor_id());
+	if (!local_dec_and_test(&data->nest))
+		goto out;
 
 	/*
-	 * Therefore we have to validate we did not indeed do so.
+	 * Publish the known good head. Rely on the full barrier implied
+	 * by atomic_dec_and_test() order the data->head read and this
+	 * write.
 	 */
-	if (unlikely(atomic_long_read(&data->done_head))) {
-		/*
-		 * Since we had it locked, we can lock it again.
-		 */
-		while (atomic_cmpxchg(&data->lock, -1, cpu) != -1)
-			cpu_relax();
+	data->user_page->data_head = head;
 
+	/*
+	 * Now check if we missed an update, rely on the (compiler)
+	 * barrier in atomic_dec_and_test() to re-read data->head.
+	 */
+	if (unlikely(head != local_read(&data->head))) {
+		local_inc(&data->nest);
 		goto again;
 	}
 
-	if (atomic_xchg(&data->wakeup, 0))
+	if (handle->wakeup != local_read(&data->wakeup))
 		perf_output_wakeup(handle);
-out:
-	put_cpu();
+
+ out:
+	preempt_enable();
 }
 
-void perf_output_copy(struct perf_output_handle *handle,
+__always_inline void perf_output_copy(struct perf_output_handle *handle,
 		      const void *buf, unsigned int len)
 {
-	unsigned int pages_mask;
-	unsigned long offset;
-	unsigned int size;
-	void **pages;
-
-	offset		= handle->offset;
-	pages_mask	= handle->data->nr_pages - 1;
-	pages		= handle->data->data_pages;
-
 	do {
-		unsigned long page_offset;
-		unsigned long page_size;
-		int nr;
+		unsigned long size = min_t(unsigned long, handle->size, len);
 
-		nr	    = (offset >> PAGE_SHIFT) & pages_mask;
-		page_size   = 1UL << (handle->data->data_order + PAGE_SHIFT);
-		page_offset = offset & (page_size - 1);
-		size	    = min_t(unsigned int, page_size - page_offset, len);
+		memcpy(handle->addr, buf, size);
 
-		memcpy(pages[nr] + page_offset, buf, size);
+		len -= size;
+		handle->addr += size;
+		handle->size -= size;
+		if (!handle->size) {
+			struct perf_mmap_data *data = handle->data;
 
-		len	    -= size;
-		buf	    += size;
-		offset	    += size;
+			handle->page++;
+			handle->page &= data->nr_pages - 1;
+			handle->addr = data->data_pages[handle->page];
+			handle->size = PAGE_SIZE << page_order(data);
+		}
 	} while (len);
-
-	handle->offset = offset;
-
-	/*
-	 * Check we didn't copy past our reservation window, taking the
-	 * possible unsigned int wrap into account.
-	 */
-	WARN_ON_ONCE(((long)(handle->head - handle->offset)) < 0);
 }
 
 int perf_output_begin(struct perf_output_handle *handle,
@@ -3036,13 +3024,13 @@
 	handle->sample	= sample;
 
 	if (!data->nr_pages)
-		goto fail;
+		goto out;
 
-	have_lost = atomic_read(&data->lost);
+	have_lost = local_read(&data->lost);
 	if (have_lost)
 		size += sizeof(lost_event);
 
-	perf_output_lock(handle);
+	perf_output_get_handle(handle);
 
 	do {
 		/*
@@ -3052,24 +3040,28 @@
 		 */
 		tail = ACCESS_ONCE(data->user_page->data_tail);
 		smp_rmb();
-		offset = head = atomic_long_read(&data->head);
+		offset = head = local_read(&data->head);
 		head += size;
 		if (unlikely(!perf_output_space(data, tail, offset, head)))
 			goto fail;
-	} while (atomic_long_cmpxchg(&data->head, offset, head) != offset);
+	} while (local_cmpxchg(&data->head, offset, head) != offset);
 
-	handle->offset	= offset;
-	handle->head	= head;
+	if (head - local_read(&data->wakeup) > data->watermark)
+		local_add(data->watermark, &data->wakeup);
 
-	if (head - tail > data->watermark)
-		atomic_set(&data->wakeup, 1);
+	handle->page = offset >> (PAGE_SHIFT + page_order(data));
+	handle->page &= data->nr_pages - 1;
+	handle->size = offset & ((PAGE_SIZE << page_order(data)) - 1);
+	handle->addr = data->data_pages[handle->page];
+	handle->addr += handle->size;
+	handle->size = (PAGE_SIZE << page_order(data)) - handle->size;
 
 	if (have_lost) {
 		lost_event.header.type = PERF_RECORD_LOST;
 		lost_event.header.misc = 0;
 		lost_event.header.size = sizeof(lost_event);
 		lost_event.id          = event->id;
-		lost_event.lost        = atomic_xchg(&data->lost, 0);
+		lost_event.lost        = local_xchg(&data->lost, 0);
 
 		perf_output_put(handle, lost_event);
 	}
@@ -3077,8 +3069,8 @@
 	return 0;
 
 fail:
-	atomic_inc(&data->lost);
-	perf_output_unlock(handle);
+	local_inc(&data->lost);
+	perf_output_put_handle(handle);
 out:
 	rcu_read_unlock();
 
@@ -3093,14 +3085,14 @@
 	int wakeup_events = event->attr.wakeup_events;
 
 	if (handle->sample && wakeup_events) {
-		int events = atomic_inc_return(&data->events);
+		int events = local_inc_return(&data->events);
 		if (events >= wakeup_events) {
-			atomic_sub(wakeup_events, &data->events);
-			atomic_set(&data->wakeup, 1);
+			local_sub(wakeup_events, &data->events);
+			local_inc(&data->wakeup);
 		}
 	}
 
-	perf_output_unlock(handle);
+	perf_output_put_handle(handle);
 	rcu_read_unlock();
 }
 
@@ -3436,22 +3428,13 @@
 {
 	struct perf_output_handle handle;
 	struct task_struct *task = task_event->task;
-	unsigned long flags;
 	int size, ret;
 
-	/*
-	 * If this CPU attempts to acquire an rq lock held by a CPU spinning
-	 * in perf_output_lock() from interrupt context, it's game over.
-	 */
-	local_irq_save(flags);
-
 	size  = task_event->event_id.header.size;
 	ret = perf_output_begin(&handle, event, size, 0, 0);
 
-	if (ret) {
-		local_irq_restore(flags);
+	if (ret)
 		return;
-	}
 
 	task_event->event_id.pid = perf_event_pid(event, task);
 	task_event->event_id.ppid = perf_event_pid(event, current);
@@ -3462,7 +3445,6 @@
 	perf_output_put(&handle, task_event->event_id);
 
 	perf_output_end(&handle);
-	local_irq_restore(flags);
 }
 
 static int perf_event_task_match(struct perf_event *event)
@@ -4020,9 +4002,6 @@
 	perf_swevent_overflow(event, 0, nmi, data, regs);
 }
 
-static int perf_tp_event_match(struct perf_event *event,
-				struct perf_sample_data *data);
-
 static int perf_exclude_event(struct perf_event *event,
 			      struct pt_regs *regs)
 {
@@ -4052,10 +4031,6 @@
 	if (perf_exclude_event(event, regs))
 		return 0;
 
-	if (event->attr.type == PERF_TYPE_TRACEPOINT &&
-	    !perf_tp_event_match(event, data))
-		return 0;
-
 	return 1;
 }
 
@@ -4066,19 +4041,46 @@
 	return hash_64(val, SWEVENT_HLIST_BITS);
 }
 
-static struct hlist_head *
-find_swevent_head(struct perf_cpu_context *ctx, u64 type, u32 event_id)
+static inline struct hlist_head *
+__find_swevent_head(struct swevent_hlist *hlist, u64 type, u32 event_id)
 {
-	u64 hash;
-	struct swevent_hlist *hlist;
+	u64 hash = swevent_hash(type, event_id);
 
-	hash = swevent_hash(type, event_id);
+	return &hlist->heads[hash];
+}
+
+/* For the read side: events when they trigger */
+static inline struct hlist_head *
+find_swevent_head_rcu(struct perf_cpu_context *ctx, u64 type, u32 event_id)
+{
+	struct swevent_hlist *hlist;
 
 	hlist = rcu_dereference(ctx->swevent_hlist);
 	if (!hlist)
 		return NULL;
 
-	return &hlist->heads[hash];
+	return __find_swevent_head(hlist, type, event_id);
+}
+
+/* For the event head insertion and removal in the hlist */
+static inline struct hlist_head *
+find_swevent_head(struct perf_cpu_context *ctx, struct perf_event *event)
+{
+	struct swevent_hlist *hlist;
+	u32 event_id = event->attr.config;
+	u64 type = event->attr.type;
+
+	/*
+	 * Event scheduling is always serialized against hlist allocation
+	 * and release. Which makes the protected version suitable here.
+	 * The context lock guarantees that.
+	 */
+	hlist = rcu_dereference_protected(ctx->swevent_hlist,
+					  lockdep_is_held(&event->ctx->lock));
+	if (!hlist)
+		return NULL;
+
+	return __find_swevent_head(hlist, type, event_id);
 }
 
 static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
@@ -4095,7 +4097,7 @@
 
 	rcu_read_lock();
 
-	head = find_swevent_head(cpuctx, type, event_id);
+	head = find_swevent_head_rcu(cpuctx, type, event_id);
 
 	if (!head)
 		goto end;
@@ -4110,7 +4112,7 @@
 
 int perf_swevent_get_recursion_context(void)
 {
-	struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
+	struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
 	int rctx;
 
 	if (in_nmi())
@@ -4122,10 +4124,8 @@
 	else
 		rctx = 0;
 
-	if (cpuctx->recursion[rctx]) {
-		put_cpu_var(perf_cpu_context);
+	if (cpuctx->recursion[rctx])
 		return -1;
-	}
 
 	cpuctx->recursion[rctx]++;
 	barrier();
@@ -4139,7 +4139,6 @@
 	struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
 	barrier();
 	cpuctx->recursion[rctx]--;
-	put_cpu_var(perf_cpu_context);
 }
 EXPORT_SYMBOL_GPL(perf_swevent_put_recursion_context);
 
@@ -4150,6 +4149,7 @@
 	struct perf_sample_data data;
 	int rctx;
 
+	preempt_disable_notrace();
 	rctx = perf_swevent_get_recursion_context();
 	if (rctx < 0)
 		return;
@@ -4159,6 +4159,7 @@
 	do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi, &data, regs);
 
 	perf_swevent_put_recursion_context(rctx);
+	preempt_enable_notrace();
 }
 
 static void perf_swevent_read(struct perf_event *event)
@@ -4178,7 +4179,7 @@
 		perf_swevent_set_period(event);
 	}
 
-	head = find_swevent_head(cpuctx, event->attr.type, event->attr.config);
+	head = find_swevent_head(cpuctx, event);
 	if (WARN_ON_ONCE(!head))
 		return -EINVAL;
 
@@ -4366,6 +4367,14 @@
 	.read		= task_clock_perf_event_read,
 };
 
+/* Deref the hlist from the update side */
+static inline struct swevent_hlist *
+swevent_hlist_deref(struct perf_cpu_context *cpuctx)
+{
+	return rcu_dereference_protected(cpuctx->swevent_hlist,
+					 lockdep_is_held(&cpuctx->hlist_mutex));
+}
+
 static void swevent_hlist_release_rcu(struct rcu_head *rcu_head)
 {
 	struct swevent_hlist *hlist;
@@ -4376,12 +4385,11 @@
 
 static void swevent_hlist_release(struct perf_cpu_context *cpuctx)
 {
-	struct swevent_hlist *hlist;
+	struct swevent_hlist *hlist = swevent_hlist_deref(cpuctx);
 
-	if (!cpuctx->swevent_hlist)
+	if (!hlist)
 		return;
 
-	hlist = cpuctx->swevent_hlist;
 	rcu_assign_pointer(cpuctx->swevent_hlist, NULL);
 	call_rcu(&hlist->rcu_head, swevent_hlist_release_rcu);
 }
@@ -4418,7 +4426,7 @@
 
 	mutex_lock(&cpuctx->hlist_mutex);
 
-	if (!cpuctx->swevent_hlist && cpu_online(cpu)) {
+	if (!swevent_hlist_deref(cpuctx) && cpu_online(cpu)) {
 		struct swevent_hlist *hlist;
 
 		hlist = kzalloc(sizeof(*hlist), GFP_KERNEL);
@@ -4467,25 +4475,14 @@
 
 #ifdef CONFIG_EVENT_TRACING
 
-void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
-		   int entry_size, struct pt_regs *regs)
-{
-	struct perf_sample_data data;
-	struct perf_raw_record raw = {
-		.size = entry_size,
-		.data = record,
-	};
+static const struct pmu perf_ops_tracepoint = {
+	.enable		= perf_trace_enable,
+	.disable	= perf_trace_disable,
+	.read		= perf_swevent_read,
+	.unthrottle	= perf_swevent_unthrottle,
+};
 
-	perf_sample_data_init(&data, addr);
-	data.raw = &raw;
-
-	/* Trace events already protected against recursion */
-	do_perf_sw_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
-			 &data, regs);
-}
-EXPORT_SYMBOL_GPL(perf_tp_event);
-
-static int perf_tp_event_match(struct perf_event *event,
+static int perf_tp_filter_match(struct perf_event *event,
 				struct perf_sample_data *data)
 {
 	void *record = data->raw->data;
@@ -4495,10 +4492,49 @@
 	return 0;
 }
 
+static int perf_tp_event_match(struct perf_event *event,
+				struct perf_sample_data *data,
+				struct pt_regs *regs)
+{
+	/*
+	 * All tracepoints are from kernel-space.
+	 */
+	if (event->attr.exclude_kernel)
+		return 0;
+
+	if (!perf_tp_filter_match(event, data))
+		return 0;
+
+	return 1;
+}
+
+void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
+		   struct pt_regs *regs, struct hlist_head *head)
+{
+	struct perf_sample_data data;
+	struct perf_event *event;
+	struct hlist_node *node;
+
+	struct perf_raw_record raw = {
+		.size = entry_size,
+		.data = record,
+	};
+
+	perf_sample_data_init(&data, addr);
+	data.raw = &raw;
+
+	rcu_read_lock();
+	hlist_for_each_entry_rcu(event, node, head, hlist_entry) {
+		if (perf_tp_event_match(event, &data, regs))
+			perf_swevent_add(event, count, 1, &data, regs);
+	}
+	rcu_read_unlock();
+}
+EXPORT_SYMBOL_GPL(perf_tp_event);
+
 static void tp_perf_event_destroy(struct perf_event *event)
 {
-	perf_trace_disable(event->attr.config);
-	swevent_hlist_put(event);
+	perf_trace_destroy(event);
 }
 
 static const struct pmu *tp_perf_event_init(struct perf_event *event)
@@ -4514,17 +4550,13 @@
 			!capable(CAP_SYS_ADMIN))
 		return ERR_PTR(-EPERM);
 
-	if (perf_trace_enable(event->attr.config))
+	err = perf_trace_init(event);
+	if (err)
 		return NULL;
 
 	event->destroy = tp_perf_event_destroy;
-	err = swevent_hlist_get(event);
-	if (err) {
-		perf_trace_disable(event->attr.config);
-		return ERR_PTR(err);
-	}
 
-	return &perf_ops_generic;
+	return &perf_ops_tracepoint;
 }
 
 static int perf_event_set_filter(struct perf_event *event, void __user *arg)
@@ -4552,12 +4584,6 @@
 
 #else
 
-static int perf_tp_event_match(struct perf_event *event,
-				struct perf_sample_data *data)
-{
-	return 1;
-}
-
 static const struct pmu *tp_perf_event_init(struct perf_event *event)
 {
 	return NULL;
@@ -4894,6 +4920,13 @@
 	int fput_needed = 0;
 	int ret = -EINVAL;
 
+	/*
+	 * Don't allow output of inherited per-task events. This would
+	 * create performance issues due to cross cpu access.
+	 */
+	if (event->cpu == -1 && event->attr.inherit)
+		return -EINVAL;
+
 	if (!output_fd)
 		goto set;
 
@@ -4914,6 +4947,18 @@
 	if (event->data)
 		goto out;
 
+	/*
+	 * Don't allow cross-cpu buffers
+	 */
+	if (output_event->cpu != event->cpu)
+		goto out;
+
+	/*
+	 * If its not a per-cpu buffer, it must be the same task.
+	 */
+	if (output_event->cpu == -1 && output_event->ctx != event->ctx)
+		goto out;
+
 	atomic_long_inc(&output_file->f_count);
 
 set:
@@ -4954,8 +4999,8 @@
 	struct perf_event_context *ctx;
 	struct file *event_file = NULL;
 	struct file *group_file = NULL;
+	int event_fd;
 	int fput_needed = 0;
-	int fput_needed2 = 0;
 	int err;
 
 	/* for future expandability... */
@@ -4976,12 +5021,18 @@
 			return -EINVAL;
 	}
 
+	event_fd = get_unused_fd_flags(O_RDWR);
+	if (event_fd < 0)
+		return event_fd;
+
 	/*
 	 * Get the target context (task or percpu):
 	 */
 	ctx = find_get_context(pid, cpu);
-	if (IS_ERR(ctx))
-		return PTR_ERR(ctx);
+	if (IS_ERR(ctx)) {
+		err = PTR_ERR(ctx);
+		goto err_fd;
+	}
 
 	/*
 	 * Look up the group leader (we will attach this event to it):
@@ -5021,13 +5072,11 @@
 	if (IS_ERR(event))
 		goto err_put_context;
 
-	err = anon_inode_getfd("[perf_event]", &perf_fops, event, O_RDWR);
-	if (err < 0)
+	event_file = anon_inode_getfile("[perf_event]", &perf_fops, event, O_RDWR);
+	if (IS_ERR(event_file)) {
+		err = PTR_ERR(event_file);
 		goto err_free_put_context;
-
-	event_file = fget_light(err, &fput_needed2);
-	if (!event_file)
-		goto err_free_put_context;
+	}
 
 	if (flags & PERF_FLAG_FD_OUTPUT) {
 		err = perf_event_set_output(event, group_fd);
@@ -5048,19 +5097,19 @@
 	list_add_tail(&event->owner_entry, &current->perf_event_list);
 	mutex_unlock(&current->perf_event_mutex);
 
-err_fput_free_put_context:
-	fput_light(event_file, fput_needed2);
-
-err_free_put_context:
-	if (err < 0)
-		free_event(event);
-
-err_put_context:
-	if (err < 0)
-		put_ctx(ctx);
-
 	fput_light(group_file, fput_needed);
+	fd_install(event_fd, event_file);
+	return event_fd;
 
+err_fput_free_put_context:
+	fput(event_file);
+err_free_put_context:
+	free_event(event);
+err_put_context:
+	fput_light(group_file, fput_needed);
+	put_ctx(ctx);
+err_fd:
+	put_unused_fd(event_fd);
 	return err;
 }
 
diff --git a/kernel/pid.c b/kernel/pid.c
index aebb30d..e9fd8c1 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -513,6 +513,13 @@
 
 void __init pidmap_init(void)
 {
+	/* bump default and minimum pid_max based on number of cpus */
+	pid_max = min(pid_max_max, max_t(int, pid_max,
+				PIDS_PER_CPU_DEFAULT * num_possible_cpus()));
+	pid_max_min = max_t(int, pid_max_min,
+				PIDS_PER_CPU_MIN * num_possible_cpus());
+	pr_info("pid_max: default: %u minimum: %u\n", pid_max, pid_max_min);
+
 	init_pid_ns.pidmap[0].page = kzalloc(PAGE_SIZE, GFP_KERNEL);
 	/* Reserve PID 0. We never call free_pidmap(0) */
 	set_bit(0, init_pid_ns.pidmap[0].page);
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 00bb252..9829646 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -363,7 +363,7 @@
 				}
 			} else {
 				read_lock(&tasklist_lock);
-				if (thread_group_leader(p) && p->signal) {
+				if (thread_group_leader(p) && p->sighand) {
 					error =
 					    cpu_clock_sample_group(which_clock,
 							           p, &rtn);
@@ -439,7 +439,7 @@
 
 	if (likely(p != NULL)) {
 		read_lock(&tasklist_lock);
-		if (unlikely(p->signal == NULL)) {
+		if (unlikely(p->sighand == NULL)) {
 			/*
 			 * We raced with the reaping of the task.
 			 * The deletion should have cleared us off the list.
@@ -691,10 +691,10 @@
 	read_lock(&tasklist_lock);
 	/*
 	 * We need the tasklist_lock to protect against reaping that
-	 * clears p->signal.  If p has just been reaped, we can no
+	 * clears p->sighand.  If p has just been reaped, we can no
 	 * longer get any information about it at all.
 	 */
-	if (unlikely(p->signal == NULL)) {
+	if (unlikely(p->sighand == NULL)) {
 		read_unlock(&tasklist_lock);
 		put_task_struct(p);
 		timer->it.cpu.task = NULL;
@@ -863,7 +863,7 @@
 		clear_dead = p->exit_state;
 	} else {
 		read_lock(&tasklist_lock);
-		if (unlikely(p->signal == NULL)) {
+		if (unlikely(p->sighand == NULL)) {
 			/*
 			 * The process has been reaped.
 			 * We can't even collect a sample any more.
@@ -1199,7 +1199,7 @@
 		spin_lock(&p->sighand->siglock);
 	} else {
 		read_lock(&tasklist_lock);
-		if (unlikely(p->signal == NULL)) {
+		if (unlikely(p->sighand == NULL)) {
 			/*
 			 * The process has been reaped.
 			 * We can't even collect a sample any more.
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 00d1fda..ad72342 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -559,14 +559,7 @@
 	new_timer->it_id = (timer_t) new_timer_id;
 	new_timer->it_clock = which_clock;
 	new_timer->it_overrun = -1;
-	error = CLOCK_DISPATCH(which_clock, timer_create, (new_timer));
-	if (error)
-		goto out;
 
-	/*
-	 * return the timer_id now.  The next step is hard to
-	 * back out if there is an error.
-	 */
 	if (copy_to_user(created_timer_id,
 			 &new_timer_id, sizeof (new_timer_id))) {
 		error = -EFAULT;
@@ -597,6 +590,10 @@
 	new_timer->sigq->info.si_tid   = new_timer->it_id;
 	new_timer->sigq->info.si_code  = SI_TIMER;
 
+	error = CLOCK_DISPATCH(which_clock, timer_create, (new_timer));
+	if (error)
+		goto out;
+
 	spin_lock_irq(&current->sighand->siglock);
 	new_timer->it_signal = current->signal;
 	list_add(&new_timer->list, &current->signal->posix_timers);
diff --git a/kernel/profile.c b/kernel/profile.c
index dfadc5b..b22a899 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -365,14 +365,14 @@
 	switch (action) {
 	case CPU_UP_PREPARE:
 	case CPU_UP_PREPARE_FROZEN:
-		node = cpu_to_node(cpu);
+		node = cpu_to_mem(cpu);
 		per_cpu(cpu_profile_flip, cpu) = 0;
 		if (!per_cpu(cpu_profile_hits, cpu)[1]) {
 			page = alloc_pages_exact_node(node,
 					GFP_KERNEL | __GFP_ZERO,
 					0);
 			if (!page)
-				return NOTIFY_BAD;
+				return notifier_from_errno(-ENOMEM);
 			per_cpu(cpu_profile_hits, cpu)[1] = page_address(page);
 		}
 		if (!per_cpu(cpu_profile_hits, cpu)[0]) {
@@ -388,7 +388,7 @@
 		page = virt_to_page(per_cpu(cpu_profile_hits, cpu)[1]);
 		per_cpu(cpu_profile_hits, cpu)[1] = NULL;
 		__free_page(page);
-		return NOTIFY_BAD;
+		return notifier_from_errno(-ENOMEM);
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		if (prof_cpu_mask != NULL)
@@ -567,7 +567,7 @@
 	int cpu;
 
 	for_each_online_cpu(cpu) {
-		int node = cpu_to_node(cpu);
+		int node = cpu_to_mem(cpu);
 		struct page *page;
 
 		page = alloc_pages_exact_node(node,
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 6af9cdd..74a3d69 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -594,6 +594,32 @@
 		ret = ptrace_detach(child, data);
 		break;
 
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+	case PTRACE_GETFDPIC: {
+		struct mm_struct *mm = get_task_mm(child);
+		unsigned long tmp = 0;
+
+		ret = -ESRCH;
+		if (!mm)
+			break;
+
+		switch (addr) {
+		case PTRACE_GETFDPIC_EXEC:
+			tmp = mm->context.exec_fdpic_loadmap;
+			break;
+		case PTRACE_GETFDPIC_INTERP:
+			tmp = mm->context.interp_fdpic_loadmap;
+			break;
+		default:
+			break;
+		}
+		mmput(mm);
+
+		ret = put_user(tmp, (unsigned long __user *) data);
+		break;
+	}
+#endif
+
 #ifdef PTRACE_SINGLESTEP
 	case PTRACE_SINGLESTEP:
 #endif
diff --git a/kernel/relay.c b/kernel/relay.c
index 4268287..c7cf397 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -539,7 +539,7 @@
 					"relay_hotcpu_callback: cpu %d buffer "
 					"creation failed\n", hotcpu);
 				mutex_unlock(&relay_channels_mutex);
-				return NOTIFY_BAD;
+				return notifier_from_errno(-ENOMEM);
 			}
 		}
 		mutex_unlock(&relay_channels_mutex);
diff --git a/kernel/sched.c b/kernel/sched.c
index 054a601..d484081 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -969,14 +969,6 @@
 	}
 }
 
-void task_rq_unlock_wait(struct task_struct *p)
-{
-	struct rq *rq = task_rq(p);
-
-	smp_mb(); /* spin-unlock-wait is not a full memory barrier */
-	raw_spin_unlock_wait(&rq->lock);
-}
-
 static void __task_rq_unlock(struct rq *rq)
 	__releases(rq->lock)
 {
@@ -4062,6 +4054,23 @@
 EXPORT_SYMBOL(wait_for_completion_killable);
 
 /**
+ * wait_for_completion_killable_timeout: - waits for completion of a task (w/(to,killable))
+ * @x:  holds the state of this particular completion
+ * @timeout:  timeout value in jiffies
+ *
+ * This waits for either a completion of a specific task to be
+ * signaled or for a specified timeout to expire. It can be
+ * interrupted by a kill signal. The timeout is in jiffies.
+ */
+unsigned long __sched
+wait_for_completion_killable_timeout(struct completion *x,
+				     unsigned long timeout)
+{
+	return wait_for_common(x, timeout, TASK_KILLABLE);
+}
+EXPORT_SYMBOL(wait_for_completion_killable_timeout);
+
+/**
  *	try_wait_for_completion - try to decrement a completion without blocking
  *	@x:	completion structure
  *
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index 87a330a..3556539 100644
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -381,15 +381,9 @@
 void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 {
 	unsigned long nr_switches;
-	unsigned long flags;
-	int num_threads = 1;
 
-	if (lock_task_sighand(p, &flags)) {
-		num_threads = atomic_read(&p->signal->count);
-		unlock_task_sighand(p, &flags);
-	}
-
-	SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, num_threads);
+	SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid,
+						get_nr_threads(p));
 	SEQ_printf(m,
 		"---------------------------------------------------------\n");
 #define __P(F) \
diff --git a/kernel/signal.c b/kernel/signal.c
index 825a3f2..906ae5a1 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -642,7 +642,7 @@
 static int check_kill_permission(int sig, struct siginfo *info,
 				 struct task_struct *t)
 {
-	const struct cred *cred = current_cred(), *tcred;
+	const struct cred *cred, *tcred;
 	struct pid *sid;
 	int error;
 
@@ -656,8 +656,10 @@
 	if (error)
 		return error;
 
+	cred = current_cred();
 	tcred = __task_cred(t);
-	if ((cred->euid ^ tcred->suid) &&
+	if (!same_thread_group(current, t) &&
+	    (cred->euid ^ tcred->suid) &&
 	    (cred->euid ^ tcred->uid) &&
 	    (cred->uid  ^ tcred->suid) &&
 	    (cred->uid  ^ tcred->uid) &&
@@ -1083,23 +1085,24 @@
 /*
  * Nuke all other threads in the group.
  */
-void zap_other_threads(struct task_struct *p)
+int zap_other_threads(struct task_struct *p)
 {
-	struct task_struct *t;
+	struct task_struct *t = p;
+	int count = 0;
 
 	p->signal->group_stop_count = 0;
 
-	for (t = next_thread(p); t != p; t = next_thread(t)) {
-		/*
-		 * Don't bother with already dead threads
-		 */
+	while_each_thread(p, t) {
+		count++;
+
+		/* Don't bother with already dead threads */
 		if (t->exit_state)
 			continue;
-
-		/* SIGKILL will be handled before any pending SIGSTOP */
 		sigaddset(&t->pending.signal, SIGKILL);
 		signal_wake_up(t, 1);
 	}
+
+	return count;
 }
 
 struct sighand_struct *lock_task_sighand(struct task_struct *tsk, unsigned long *flags)
diff --git a/kernel/smp.c b/kernel/smp.c
index 3fc6973..75c970c 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -52,7 +52,7 @@
 	case CPU_UP_PREPARE_FROZEN:
 		if (!zalloc_cpumask_var_node(&cfd->cpumask, GFP_KERNEL,
 				cpu_to_node(cpu)))
-			return NOTIFY_BAD;
+			return notifier_from_errno(-ENOMEM);
 		break;
 
 #ifdef CONFIG_HOTPLUG_CPU
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 0db913a..825e112 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -808,7 +808,7 @@
 		p = kthread_create(run_ksoftirqd, hcpu, "ksoftirqd/%d", hotcpu);
 		if (IS_ERR(p)) {
 			printk("ksoftirqd for %i failed\n", hotcpu);
-			return NOTIFY_BAD;
+			return notifier_from_errno(PTR_ERR(p));
 		}
 		kthread_bind(p, hotcpu);
   		per_cpu(ksoftirqd, hotcpu) = p;
diff --git a/kernel/sys.c b/kernel/sys.c
index 0d36d88..e83ddbb 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1632,9 +1632,9 @@
 
 char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff";
 
-static void argv_cleanup(char **argv, char **envp)
+static void argv_cleanup(struct subprocess_info *info)
 {
-	argv_free(argv);
+	argv_free(info->argv);
 }
 
 /**
@@ -1668,7 +1668,7 @@
 		goto out;
 	}
 
-	call_usermodehelper_setcleanup(info, argv_cleanup);
+	call_usermodehelper_setfns(info, NULL, argv_cleanup, NULL);
 
 	ret = call_usermodehelper_exec(info, UMH_NO_WAIT);
 
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 84ff5e7..997080f 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2287,6 +2287,8 @@
 		if (write) {
 			left -= proc_skip_spaces(&kbuf);
 
+			if (!left)
+				break;
 			err = proc_get_long(&kbuf, &left, &lval, &neg,
 					     proc_wspace_sep,
 					     sizeof(proc_wspace_sep), NULL);
@@ -2313,7 +2315,7 @@
 
 	if (!write && !first && left && !err)
 		err = proc_put_char(&buffer, &left, '\n');
-	if (write && !err)
+	if (write && !err && left)
 		left -= proc_skip_spaces(&kbuf);
 free:
 	if (write) {
diff --git a/kernel/timer.c b/kernel/timer.c
index be394af..2454172 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -752,11 +752,15 @@
 
 	expires_limit = expires;
 
-	if (timer->slack > -1)
+	if (timer->slack >= 0) {
 		expires_limit = expires + timer->slack;
-	else if (time_after(expires, jiffies)) /* auto slack: use 0.4% */
-		expires_limit = expires + (expires - jiffies)/256;
+	} else {
+		unsigned long now = jiffies;
 
+		/* No slack, if already expired else auto slack 0.4% */
+		if (time_after(expires, now))
+			expires_limit = expires + (expires - now)/256;
+	}
 	mask = expires ^ expires_limit;
 	if (mask == 0)
 		return expires;
@@ -1680,11 +1684,14 @@
 				unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
+	int err;
+
 	switch(action) {
 	case CPU_UP_PREPARE:
 	case CPU_UP_PREPARE_FROZEN:
-		if (init_timers_cpu(cpu) < 0)
-			return NOTIFY_BAD;
+		err = init_timers_cpu(cpu);
+		if (err < 0)
+			return notifier_from_errno(err);
 		break;
 #ifdef CONFIG_HOTPLUG_CPU
 	case CPU_DEAD:
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index b3bc91a..36ea2b6 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -675,28 +675,33 @@
 	}
 }
 
-static void blk_add_trace_rq_abort(struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_abort(void *ignore,
+				   struct request_queue *q, struct request *rq)
 {
 	blk_add_trace_rq(q, rq, BLK_TA_ABORT);
 }
 
-static void blk_add_trace_rq_insert(struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_insert(void *ignore,
+				    struct request_queue *q, struct request *rq)
 {
 	blk_add_trace_rq(q, rq, BLK_TA_INSERT);
 }
 
-static void blk_add_trace_rq_issue(struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_issue(void *ignore,
+				   struct request_queue *q, struct request *rq)
 {
 	blk_add_trace_rq(q, rq, BLK_TA_ISSUE);
 }
 
-static void blk_add_trace_rq_requeue(struct request_queue *q,
+static void blk_add_trace_rq_requeue(void *ignore,
+				     struct request_queue *q,
 				     struct request *rq)
 {
 	blk_add_trace_rq(q, rq, BLK_TA_REQUEUE);
 }
 
-static void blk_add_trace_rq_complete(struct request_queue *q,
+static void blk_add_trace_rq_complete(void *ignore,
+				      struct request_queue *q,
 				      struct request *rq)
 {
 	blk_add_trace_rq(q, rq, BLK_TA_COMPLETE);
@@ -724,34 +729,40 @@
 			!bio_flagged(bio, BIO_UPTODATE), 0, NULL);
 }
 
-static void blk_add_trace_bio_bounce(struct request_queue *q, struct bio *bio)
+static void blk_add_trace_bio_bounce(void *ignore,
+				     struct request_queue *q, struct bio *bio)
 {
 	blk_add_trace_bio(q, bio, BLK_TA_BOUNCE);
 }
 
-static void blk_add_trace_bio_complete(struct request_queue *q, struct bio *bio)
+static void blk_add_trace_bio_complete(void *ignore,
+				       struct request_queue *q, struct bio *bio)
 {
 	blk_add_trace_bio(q, bio, BLK_TA_COMPLETE);
 }
 
-static void blk_add_trace_bio_backmerge(struct request_queue *q,
+static void blk_add_trace_bio_backmerge(void *ignore,
+					struct request_queue *q,
 					struct bio *bio)
 {
 	blk_add_trace_bio(q, bio, BLK_TA_BACKMERGE);
 }
 
-static void blk_add_trace_bio_frontmerge(struct request_queue *q,
+static void blk_add_trace_bio_frontmerge(void *ignore,
+					 struct request_queue *q,
 					 struct bio *bio)
 {
 	blk_add_trace_bio(q, bio, BLK_TA_FRONTMERGE);
 }
 
-static void blk_add_trace_bio_queue(struct request_queue *q, struct bio *bio)
+static void blk_add_trace_bio_queue(void *ignore,
+				    struct request_queue *q, struct bio *bio)
 {
 	blk_add_trace_bio(q, bio, BLK_TA_QUEUE);
 }
 
-static void blk_add_trace_getrq(struct request_queue *q,
+static void blk_add_trace_getrq(void *ignore,
+				struct request_queue *q,
 				struct bio *bio, int rw)
 {
 	if (bio)
@@ -765,7 +776,8 @@
 }
 
 
-static void blk_add_trace_sleeprq(struct request_queue *q,
+static void blk_add_trace_sleeprq(void *ignore,
+				  struct request_queue *q,
 				  struct bio *bio, int rw)
 {
 	if (bio)
@@ -779,7 +791,7 @@
 	}
 }
 
-static void blk_add_trace_plug(struct request_queue *q)
+static void blk_add_trace_plug(void *ignore, struct request_queue *q)
 {
 	struct blk_trace *bt = q->blk_trace;
 
@@ -787,7 +799,7 @@
 		__blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
 }
 
-static void blk_add_trace_unplug_io(struct request_queue *q)
+static void blk_add_trace_unplug_io(void *ignore, struct request_queue *q)
 {
 	struct blk_trace *bt = q->blk_trace;
 
@@ -800,7 +812,7 @@
 	}
 }
 
-static void blk_add_trace_unplug_timer(struct request_queue *q)
+static void blk_add_trace_unplug_timer(void *ignore, struct request_queue *q)
 {
 	struct blk_trace *bt = q->blk_trace;
 
@@ -813,7 +825,8 @@
 	}
 }
 
-static void blk_add_trace_split(struct request_queue *q, struct bio *bio,
+static void blk_add_trace_split(void *ignore,
+				struct request_queue *q, struct bio *bio,
 				unsigned int pdu)
 {
 	struct blk_trace *bt = q->blk_trace;
@@ -839,8 +852,9 @@
  *     it spans a stripe (or similar). Add a trace for that action.
  *
  **/
-static void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
-				       dev_t dev, sector_t from)
+static void blk_add_trace_remap(void *ignore,
+				struct request_queue *q, struct bio *bio,
+				dev_t dev, sector_t from)
 {
 	struct blk_trace *bt = q->blk_trace;
 	struct blk_io_trace_remap r;
@@ -869,7 +883,8 @@
  *     Add a trace for that action.
  *
  **/
-static void blk_add_trace_rq_remap(struct request_queue *q,
+static void blk_add_trace_rq_remap(void *ignore,
+				   struct request_queue *q,
 				   struct request *rq, dev_t dev,
 				   sector_t from)
 {
@@ -921,64 +936,64 @@
 {
 	int ret;
 
-	ret = register_trace_block_rq_abort(blk_add_trace_rq_abort);
+	ret = register_trace_block_rq_abort(blk_add_trace_rq_abort, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_rq_insert(blk_add_trace_rq_insert);
+	ret = register_trace_block_rq_insert(blk_add_trace_rq_insert, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_rq_issue(blk_add_trace_rq_issue);
+	ret = register_trace_block_rq_issue(blk_add_trace_rq_issue, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_rq_requeue(blk_add_trace_rq_requeue);
+	ret = register_trace_block_rq_requeue(blk_add_trace_rq_requeue, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_rq_complete(blk_add_trace_rq_complete);
+	ret = register_trace_block_rq_complete(blk_add_trace_rq_complete, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_bio_bounce(blk_add_trace_bio_bounce);
+	ret = register_trace_block_bio_bounce(blk_add_trace_bio_bounce, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_bio_complete(blk_add_trace_bio_complete);
+	ret = register_trace_block_bio_complete(blk_add_trace_bio_complete, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_bio_backmerge(blk_add_trace_bio_backmerge);
+	ret = register_trace_block_bio_backmerge(blk_add_trace_bio_backmerge, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge);
+	ret = register_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_bio_queue(blk_add_trace_bio_queue);
+	ret = register_trace_block_bio_queue(blk_add_trace_bio_queue, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_getrq(blk_add_trace_getrq);
+	ret = register_trace_block_getrq(blk_add_trace_getrq, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_sleeprq(blk_add_trace_sleeprq);
+	ret = register_trace_block_sleeprq(blk_add_trace_sleeprq, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_plug(blk_add_trace_plug);
+	ret = register_trace_block_plug(blk_add_trace_plug, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_unplug_timer(blk_add_trace_unplug_timer);
+	ret = register_trace_block_unplug_timer(blk_add_trace_unplug_timer, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_unplug_io(blk_add_trace_unplug_io);
+	ret = register_trace_block_unplug_io(blk_add_trace_unplug_io, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_split(blk_add_trace_split);
+	ret = register_trace_block_split(blk_add_trace_split, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_remap(blk_add_trace_remap);
+	ret = register_trace_block_remap(blk_add_trace_remap, NULL);
 	WARN_ON(ret);
-	ret = register_trace_block_rq_remap(blk_add_trace_rq_remap);
+	ret = register_trace_block_rq_remap(blk_add_trace_rq_remap, NULL);
 	WARN_ON(ret);
 }
 
 static void blk_unregister_tracepoints(void)
 {
-	unregister_trace_block_rq_remap(blk_add_trace_rq_remap);
-	unregister_trace_block_remap(blk_add_trace_remap);
-	unregister_trace_block_split(blk_add_trace_split);
-	unregister_trace_block_unplug_io(blk_add_trace_unplug_io);
-	unregister_trace_block_unplug_timer(blk_add_trace_unplug_timer);
-	unregister_trace_block_plug(blk_add_trace_plug);
-	unregister_trace_block_sleeprq(blk_add_trace_sleeprq);
-	unregister_trace_block_getrq(blk_add_trace_getrq);
-	unregister_trace_block_bio_queue(blk_add_trace_bio_queue);
-	unregister_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge);
-	unregister_trace_block_bio_backmerge(blk_add_trace_bio_backmerge);
-	unregister_trace_block_bio_complete(blk_add_trace_bio_complete);
-	unregister_trace_block_bio_bounce(blk_add_trace_bio_bounce);
-	unregister_trace_block_rq_complete(blk_add_trace_rq_complete);
-	unregister_trace_block_rq_requeue(blk_add_trace_rq_requeue);
-	unregister_trace_block_rq_issue(blk_add_trace_rq_issue);
-	unregister_trace_block_rq_insert(blk_add_trace_rq_insert);
-	unregister_trace_block_rq_abort(blk_add_trace_rq_abort);
+	unregister_trace_block_rq_remap(blk_add_trace_rq_remap, NULL);
+	unregister_trace_block_remap(blk_add_trace_remap, NULL);
+	unregister_trace_block_split(blk_add_trace_split, NULL);
+	unregister_trace_block_unplug_io(blk_add_trace_unplug_io, NULL);
+	unregister_trace_block_unplug_timer(blk_add_trace_unplug_timer, NULL);
+	unregister_trace_block_plug(blk_add_trace_plug, NULL);
+	unregister_trace_block_sleeprq(blk_add_trace_sleeprq, NULL);
+	unregister_trace_block_getrq(blk_add_trace_getrq, NULL);
+	unregister_trace_block_bio_queue(blk_add_trace_bio_queue, NULL);
+	unregister_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge, NULL);
+	unregister_trace_block_bio_backmerge(blk_add_trace_bio_backmerge, NULL);
+	unregister_trace_block_bio_complete(blk_add_trace_bio_complete, NULL);
+	unregister_trace_block_bio_bounce(blk_add_trace_bio_bounce, NULL);
+	unregister_trace_block_rq_complete(blk_add_trace_rq_complete, NULL);
+	unregister_trace_block_rq_requeue(blk_add_trace_rq_requeue, NULL);
+	unregister_trace_block_rq_issue(blk_add_trace_rq_issue, NULL);
+	unregister_trace_block_rq_insert(blk_add_trace_rq_insert, NULL);
+	unregister_trace_block_rq_abort(blk_add_trace_rq_abort, NULL);
 
 	tracepoint_synchronize_unregister();
 }
@@ -1321,7 +1336,7 @@
 }
 
 static enum print_line_t blk_trace_event_print(struct trace_iterator *iter,
-					       int flags)
+					       int flags, struct trace_event *event)
 {
 	return print_one_line(iter, false);
 }
@@ -1343,7 +1358,8 @@
 }
 
 static enum print_line_t
-blk_trace_event_print_binary(struct trace_iterator *iter, int flags)
+blk_trace_event_print_binary(struct trace_iterator *iter, int flags,
+			     struct trace_event *event)
 {
 	return blk_trace_synthesize_old_trace(iter) ?
 			TRACE_TYPE_HANDLED : TRACE_TYPE_PARTIAL_LINE;
@@ -1381,12 +1397,16 @@
 	.set_flag	= blk_tracer_set_flag,
 };
 
-static struct trace_event trace_blk_event = {
-	.type		= TRACE_BLK,
+static struct trace_event_functions trace_blk_event_funcs = {
 	.trace		= blk_trace_event_print,
 	.binary		= blk_trace_event_print_binary,
 };
 
+static struct trace_event trace_blk_event = {
+	.type		= TRACE_BLK,
+	.funcs		= &trace_blk_event_funcs,
+};
+
 static int __init init_blk_tracer(void)
 {
 	if (!register_ftrace_event(&trace_blk_event)) {
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 32837e1..6d2cb14 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3234,7 +3234,8 @@
 }
 
 static void
-ftrace_graph_probe_sched_switch(struct task_struct *prev, struct task_struct *next)
+ftrace_graph_probe_sched_switch(void *ignore,
+			struct task_struct *prev, struct task_struct *next)
 {
 	unsigned long long timestamp;
 	int index;
@@ -3288,7 +3289,7 @@
 	} while (ret == -EAGAIN);
 
 	if (!ret) {
-		ret = register_trace_sched_switch(ftrace_graph_probe_sched_switch);
+		ret = register_trace_sched_switch(ftrace_graph_probe_sched_switch, NULL);
 		if (ret)
 			pr_info("ftrace_graph: Couldn't activate tracepoint"
 				" probe to kernel_sched_switch\n");
@@ -3364,7 +3365,7 @@
 	ftrace_graph_entry = ftrace_graph_entry_stub;
 	ftrace_shutdown(FTRACE_STOP_FUNC_RET);
 	unregister_pm_notifier(&ftrace_suspend_notifier);
-	unregister_trace_sched_switch(ftrace_graph_probe_sched_switch);
+	unregister_trace_sched_switch(ftrace_graph_probe_sched_switch, NULL);
 
  out:
 	mutex_unlock(&ftrace_lock);
diff --git a/kernel/trace/kmemtrace.c b/kernel/trace/kmemtrace.c
index a91da69..bbfc1bb 100644
--- a/kernel/trace/kmemtrace.c
+++ b/kernel/trace/kmemtrace.c
@@ -95,7 +95,8 @@
 	trace_wake_up();
 }
 
-static void kmemtrace_kmalloc(unsigned long call_site,
+static void kmemtrace_kmalloc(void *ignore,
+			      unsigned long call_site,
 			      const void *ptr,
 			      size_t bytes_req,
 			      size_t bytes_alloc,
@@ -105,7 +106,8 @@
 			bytes_req, bytes_alloc, gfp_flags, -1);
 }
 
-static void kmemtrace_kmem_cache_alloc(unsigned long call_site,
+static void kmemtrace_kmem_cache_alloc(void *ignore,
+				       unsigned long call_site,
 				       const void *ptr,
 				       size_t bytes_req,
 				       size_t bytes_alloc,
@@ -115,7 +117,8 @@
 			bytes_req, bytes_alloc, gfp_flags, -1);
 }
 
-static void kmemtrace_kmalloc_node(unsigned long call_site,
+static void kmemtrace_kmalloc_node(void *ignore,
+				   unsigned long call_site,
 				   const void *ptr,
 				   size_t bytes_req,
 				   size_t bytes_alloc,
@@ -126,7 +129,8 @@
 			bytes_req, bytes_alloc, gfp_flags, node);
 }
 
-static void kmemtrace_kmem_cache_alloc_node(unsigned long call_site,
+static void kmemtrace_kmem_cache_alloc_node(void *ignore,
+					    unsigned long call_site,
 					    const void *ptr,
 					    size_t bytes_req,
 					    size_t bytes_alloc,
@@ -137,12 +141,14 @@
 			bytes_req, bytes_alloc, gfp_flags, node);
 }
 
-static void kmemtrace_kfree(unsigned long call_site, const void *ptr)
+static void
+kmemtrace_kfree(void *ignore, unsigned long call_site, const void *ptr)
 {
 	kmemtrace_free(KMEMTRACE_TYPE_KMALLOC, call_site, ptr);
 }
 
-static void kmemtrace_kmem_cache_free(unsigned long call_site, const void *ptr)
+static void kmemtrace_kmem_cache_free(void *ignore,
+				      unsigned long call_site, const void *ptr)
 {
 	kmemtrace_free(KMEMTRACE_TYPE_CACHE, call_site, ptr);
 }
@@ -151,34 +157,34 @@
 {
 	int err;
 
-	err = register_trace_kmalloc(kmemtrace_kmalloc);
+	err = register_trace_kmalloc(kmemtrace_kmalloc, NULL);
 	if (err)
 		return err;
-	err = register_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc);
+	err = register_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc, NULL);
 	if (err)
 		return err;
-	err = register_trace_kmalloc_node(kmemtrace_kmalloc_node);
+	err = register_trace_kmalloc_node(kmemtrace_kmalloc_node, NULL);
 	if (err)
 		return err;
-	err = register_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node);
+	err = register_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node, NULL);
 	if (err)
 		return err;
-	err = register_trace_kfree(kmemtrace_kfree);
+	err = register_trace_kfree(kmemtrace_kfree, NULL);
 	if (err)
 		return err;
-	err = register_trace_kmem_cache_free(kmemtrace_kmem_cache_free);
+	err = register_trace_kmem_cache_free(kmemtrace_kmem_cache_free, NULL);
 
 	return err;
 }
 
 static void kmemtrace_stop_probes(void)
 {
-	unregister_trace_kmalloc(kmemtrace_kmalloc);
-	unregister_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc);
-	unregister_trace_kmalloc_node(kmemtrace_kmalloc_node);
-	unregister_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node);
-	unregister_trace_kfree(kmemtrace_kfree);
-	unregister_trace_kmem_cache_free(kmemtrace_kmem_cache_free);
+	unregister_trace_kmalloc(kmemtrace_kmalloc, NULL);
+	unregister_trace_kmem_cache_alloc(kmemtrace_kmem_cache_alloc, NULL);
+	unregister_trace_kmalloc_node(kmemtrace_kmalloc_node, NULL);
+	unregister_trace_kmem_cache_alloc_node(kmemtrace_kmem_cache_alloc_node, NULL);
+	unregister_trace_kfree(kmemtrace_kfree, NULL);
+	unregister_trace_kmem_cache_free(kmemtrace_kmem_cache_free, NULL);
 }
 
 static int kmem_trace_init(struct trace_array *tr)
@@ -237,7 +243,8 @@
 };
 
 static enum print_line_t
-kmemtrace_print_alloc(struct trace_iterator *iter, int flags)
+kmemtrace_print_alloc(struct trace_iterator *iter, int flags,
+		      struct trace_event *event)
 {
 	struct trace_seq *s = &iter->seq;
 	struct kmemtrace_alloc_entry *entry;
@@ -257,7 +264,8 @@
 }
 
 static enum print_line_t
-kmemtrace_print_free(struct trace_iterator *iter, int flags)
+kmemtrace_print_free(struct trace_iterator *iter, int flags,
+		     struct trace_event *event)
 {
 	struct trace_seq *s = &iter->seq;
 	struct kmemtrace_free_entry *entry;
@@ -275,7 +283,8 @@
 }
 
 static enum print_line_t
-kmemtrace_print_alloc_user(struct trace_iterator *iter, int flags)
+kmemtrace_print_alloc_user(struct trace_iterator *iter, int flags,
+			   struct trace_event *event)
 {
 	struct trace_seq *s = &iter->seq;
 	struct kmemtrace_alloc_entry *entry;
@@ -309,7 +318,8 @@
 }
 
 static enum print_line_t
-kmemtrace_print_free_user(struct trace_iterator *iter, int flags)
+kmemtrace_print_free_user(struct trace_iterator *iter, int flags,
+			  struct trace_event *event)
 {
 	struct trace_seq *s = &iter->seq;
 	struct kmemtrace_free_entry *entry;
@@ -463,18 +473,26 @@
 	}
 }
 
-static struct trace_event kmem_trace_alloc = {
-	.type			= TRACE_KMEM_ALLOC,
+static struct trace_event_functions kmem_trace_alloc_funcs = {
 	.trace			= kmemtrace_print_alloc,
 	.binary			= kmemtrace_print_alloc_user,
 };
 
-static struct trace_event kmem_trace_free = {
-	.type			= TRACE_KMEM_FREE,
+static struct trace_event kmem_trace_alloc = {
+	.type			= TRACE_KMEM_ALLOC,
+	.funcs			= &kmem_trace_alloc_funcs,
+};
+
+static struct trace_event_functions kmem_trace_free_funcs = {
 	.trace			= kmemtrace_print_free,
 	.binary			= kmemtrace_print_free_user,
 };
 
+static struct trace_event kmem_trace_free = {
+	.type			= TRACE_KMEM_FREE,
+	.funcs			= &kmem_trace_free_funcs,
+};
+
 static struct tracer kmem_tracer __read_mostly = {
 	.name			= "kmemtrace",
 	.init			= kmem_trace_init,
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8a76339..55e4851 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1936,7 +1936,7 @@
 	}
 
 	if (event)
-		return event->trace(iter, sym_flags);
+		return event->funcs->trace(iter, sym_flags, event);
 
 	if (!trace_seq_printf(s, "Unknown type %d\n", entry->type))
 		goto partial;
@@ -1962,7 +1962,7 @@
 
 	event = ftrace_find_event(entry->type);
 	if (event)
-		return event->raw(iter, 0);
+		return event->funcs->raw(iter, 0, event);
 
 	if (!trace_seq_printf(s, "%d ?\n", entry->type))
 		goto partial;
@@ -1989,7 +1989,7 @@
 
 	event = ftrace_find_event(entry->type);
 	if (event) {
-		enum print_line_t ret = event->hex(iter, 0);
+		enum print_line_t ret = event->funcs->hex(iter, 0, event);
 		if (ret != TRACE_TYPE_HANDLED)
 			return ret;
 	}
@@ -2014,7 +2014,8 @@
 	}
 
 	event = ftrace_find_event(entry->type);
-	return event ? event->binary(iter, 0) : TRACE_TYPE_HANDLED;
+	return event ? event->funcs->binary(iter, 0, event) :
+		TRACE_TYPE_HANDLED;
 }
 
 int trace_empty(struct trace_iterator *iter)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index d1ce0be..2cd9639 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -405,12 +405,12 @@
 void __trace_stack(struct trace_array *tr, unsigned long flags, int skip,
 		   int pc);
 #else
-static inline void ftrace_trace_stack(struct trace_array *tr,
+static inline void ftrace_trace_stack(struct ring_buffer *buffer,
 				      unsigned long flags, int skip, int pc)
 {
 }
 
-static inline void ftrace_trace_userstack(struct trace_array *tr,
+static inline void ftrace_trace_userstack(struct ring_buffer *buffer,
 					  unsigned long flags, int pc)
 {
 }
@@ -778,12 +778,15 @@
 					 struct trace_seq *s);
 extern int filter_assign_type(const char *type);
 
+struct list_head *
+trace_get_fields(struct ftrace_event_call *event_call);
+
 static inline int
 filter_check_discard(struct ftrace_event_call *call, void *rec,
 		     struct ring_buffer *buffer,
 		     struct ring_buffer_event *event)
 {
-	if (unlikely(call->filter_active) &&
+	if (unlikely(call->flags & TRACE_EVENT_FL_FILTERED) &&
 	    !filter_match_preds(call->filter, rec)) {
 		ring_buffer_discard_commit(buffer, event);
 		return 1;
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index b9bc4d4..8d3538b 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -143,7 +143,7 @@
 }
 
 static enum print_line_t trace_branch_print(struct trace_iterator *iter,
-					    int flags)
+					    int flags, struct trace_event *event)
 {
 	struct trace_branch *field;
 
@@ -167,9 +167,13 @@
 		"    |\n");
 }
 
+static struct trace_event_functions trace_branch_funcs = {
+	.trace		= trace_branch_print,
+};
+
 static struct trace_event trace_branch_event = {
 	.type		= TRACE_BRANCH,
-	.trace		= trace_branch_print,
+	.funcs		= &trace_branch_funcs,
 };
 
 static struct tracer branch_trace __read_mostly =
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index 0565bb4..cb6f365 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -9,13 +9,9 @@
 #include <linux/kprobes.h>
 #include "trace.h"
 
-DEFINE_PER_CPU(struct pt_regs, perf_trace_regs);
-EXPORT_PER_CPU_SYMBOL_GPL(perf_trace_regs);
-
 EXPORT_SYMBOL_GPL(perf_arch_fetch_caller_regs);
 
-static char *perf_trace_buf;
-static char *perf_trace_buf_nmi;
+static char *perf_trace_buf[4];
 
 /*
  * Force it to be aligned to unsigned long to avoid misaligned accesses
@@ -27,57 +23,82 @@
 /* Count the events in use (per event id, not per instance) */
 static int	total_ref_count;
 
-static int perf_trace_event_enable(struct ftrace_event_call *event)
+static int perf_trace_event_init(struct ftrace_event_call *tp_event,
+				 struct perf_event *p_event)
 {
-	char *buf;
+	struct hlist_head *list;
 	int ret = -ENOMEM;
+	int cpu;
 
-	if (event->perf_refcount++ > 0)
+	p_event->tp_event = tp_event;
+	if (tp_event->perf_refcount++ > 0)
 		return 0;
 
+	list = alloc_percpu(struct hlist_head);
+	if (!list)
+		goto fail;
+
+	for_each_possible_cpu(cpu)
+		INIT_HLIST_HEAD(per_cpu_ptr(list, cpu));
+
+	tp_event->perf_events = list;
+
 	if (!total_ref_count) {
-		buf = (char *)alloc_percpu(perf_trace_t);
-		if (!buf)
-			goto fail_buf;
+		char *buf;
+		int i;
 
-		rcu_assign_pointer(perf_trace_buf, buf);
+		for (i = 0; i < 4; i++) {
+			buf = (char *)alloc_percpu(perf_trace_t);
+			if (!buf)
+				goto fail;
 
-		buf = (char *)alloc_percpu(perf_trace_t);
-		if (!buf)
-			goto fail_buf_nmi;
-
-		rcu_assign_pointer(perf_trace_buf_nmi, buf);
+			perf_trace_buf[i] = buf;
+		}
 	}
 
-	ret = event->perf_event_enable(event);
-	if (!ret) {
-		total_ref_count++;
-		return 0;
-	}
+	if (tp_event->class->reg)
+		ret = tp_event->class->reg(tp_event, TRACE_REG_PERF_REGISTER);
+	else
+		ret = tracepoint_probe_register(tp_event->name,
+						tp_event->class->perf_probe,
+						tp_event);
 
-fail_buf_nmi:
+	if (ret)
+		goto fail;
+
+	total_ref_count++;
+	return 0;
+
+fail:
 	if (!total_ref_count) {
-		free_percpu(perf_trace_buf_nmi);
-		free_percpu(perf_trace_buf);
-		perf_trace_buf_nmi = NULL;
-		perf_trace_buf = NULL;
+		int i;
+
+		for (i = 0; i < 4; i++) {
+			free_percpu(perf_trace_buf[i]);
+			perf_trace_buf[i] = NULL;
+		}
 	}
-fail_buf:
-	event->perf_refcount--;
+
+	if (!--tp_event->perf_refcount) {
+		free_percpu(tp_event->perf_events);
+		tp_event->perf_events = NULL;
+	}
 
 	return ret;
 }
 
-int perf_trace_enable(int event_id)
+int perf_trace_init(struct perf_event *p_event)
 {
-	struct ftrace_event_call *event;
+	struct ftrace_event_call *tp_event;
+	int event_id = p_event->attr.config;
 	int ret = -EINVAL;
 
 	mutex_lock(&event_mutex);
-	list_for_each_entry(event, &ftrace_events, list) {
-		if (event->id == event_id && event->perf_event_enable &&
-		    try_module_get(event->mod)) {
-			ret = perf_trace_event_enable(event);
+	list_for_each_entry(tp_event, &ftrace_events, list) {
+		if (tp_event->event.type == event_id &&
+		    tp_event->class && tp_event->class->perf_probe &&
+		    try_module_get(tp_event->mod)) {
+			ret = perf_trace_event_init(tp_event, p_event);
 			break;
 		}
 	}
@@ -86,90 +107,78 @@
 	return ret;
 }
 
-static void perf_trace_event_disable(struct ftrace_event_call *event)
+int perf_trace_enable(struct perf_event *p_event)
 {
-	char *buf, *nmi_buf;
+	struct ftrace_event_call *tp_event = p_event->tp_event;
+	struct hlist_head *list;
 
-	if (--event->perf_refcount > 0)
-		return;
+	list = tp_event->perf_events;
+	if (WARN_ON_ONCE(!list))
+		return -EINVAL;
 
-	event->perf_event_disable(event);
+	list = per_cpu_ptr(list, smp_processor_id());
+	hlist_add_head_rcu(&p_event->hlist_entry, list);
 
-	if (!--total_ref_count) {
-		buf = perf_trace_buf;
-		rcu_assign_pointer(perf_trace_buf, NULL);
-
-		nmi_buf = perf_trace_buf_nmi;
-		rcu_assign_pointer(perf_trace_buf_nmi, NULL);
-
-		/*
-		 * Ensure every events in profiling have finished before
-		 * releasing the buffers
-		 */
-		synchronize_sched();
-
-		free_percpu(buf);
-		free_percpu(nmi_buf);
-	}
+	return 0;
 }
 
-void perf_trace_disable(int event_id)
+void perf_trace_disable(struct perf_event *p_event)
 {
-	struct ftrace_event_call *event;
+	hlist_del_rcu(&p_event->hlist_entry);
+}
 
-	mutex_lock(&event_mutex);
-	list_for_each_entry(event, &ftrace_events, list) {
-		if (event->id == event_id) {
-			perf_trace_event_disable(event);
-			module_put(event->mod);
-			break;
+void perf_trace_destroy(struct perf_event *p_event)
+{
+	struct ftrace_event_call *tp_event = p_event->tp_event;
+	int i;
+
+	if (--tp_event->perf_refcount > 0)
+		return;
+
+	if (tp_event->class->reg)
+		tp_event->class->reg(tp_event, TRACE_REG_PERF_UNREGISTER);
+	else
+		tracepoint_probe_unregister(tp_event->name,
+					    tp_event->class->perf_probe,
+					    tp_event);
+
+	free_percpu(tp_event->perf_events);
+	tp_event->perf_events = NULL;
+
+	if (!--total_ref_count) {
+		for (i = 0; i < 4; i++) {
+			free_percpu(perf_trace_buf[i]);
+			perf_trace_buf[i] = NULL;
 		}
 	}
-	mutex_unlock(&event_mutex);
 }
 
 __kprobes void *perf_trace_buf_prepare(int size, unsigned short type,
-				       int *rctxp, unsigned long *irq_flags)
+				       struct pt_regs *regs, int *rctxp)
 {
 	struct trace_entry *entry;
-	char *trace_buf, *raw_data;
-	int pc, cpu;
+	unsigned long flags;
+	char *raw_data;
+	int pc;
 
 	BUILD_BUG_ON(PERF_MAX_TRACE_SIZE % sizeof(unsigned long));
 
 	pc = preempt_count();
 
-	/* Protect the per cpu buffer, begin the rcu read side */
-	local_irq_save(*irq_flags);
-
 	*rctxp = perf_swevent_get_recursion_context();
 	if (*rctxp < 0)
-		goto err_recursion;
+		return NULL;
 
-	cpu = smp_processor_id();
-
-	if (in_nmi())
-		trace_buf = rcu_dereference_sched(perf_trace_buf_nmi);
-	else
-		trace_buf = rcu_dereference_sched(perf_trace_buf);
-
-	if (!trace_buf)
-		goto err;
-
-	raw_data = per_cpu_ptr(trace_buf, cpu);
+	raw_data = per_cpu_ptr(perf_trace_buf[*rctxp], smp_processor_id());
 
 	/* zero the dead bytes from align to not leak stack to user */
 	memset(&raw_data[size - sizeof(u64)], 0, sizeof(u64));
 
 	entry = (struct trace_entry *)raw_data;
-	tracing_generic_entry_update(entry, *irq_flags, pc);
+	local_save_flags(flags);
+	tracing_generic_entry_update(entry, flags, pc);
 	entry->type = type;
 
 	return raw_data;
-err:
-	perf_swevent_put_recursion_context(*rctxp);
-err_recursion:
-	local_irq_restore(*irq_flags);
-	return NULL;
 }
 EXPORT_SYMBOL_GPL(perf_trace_buf_prepare);
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index c697c70..53cffc0 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -29,11 +29,23 @@
 
 LIST_HEAD(ftrace_events);
 
+struct list_head *
+trace_get_fields(struct ftrace_event_call *event_call)
+{
+	if (!event_call->class->get_fields)
+		return &event_call->class->fields;
+	return event_call->class->get_fields(event_call);
+}
+
 int trace_define_field(struct ftrace_event_call *call, const char *type,
 		       const char *name, int offset, int size, int is_signed,
 		       int filter_type)
 {
 	struct ftrace_event_field *field;
+	struct list_head *head;
+
+	if (WARN_ON(!call->class))
+		return 0;
 
 	field = kzalloc(sizeof(*field), GFP_KERNEL);
 	if (!field)
@@ -56,7 +68,8 @@
 	field->size = size;
 	field->is_signed = is_signed;
 
-	list_add(&field->link, &call->fields);
+	head = trace_get_fields(call);
+	list_add(&field->link, head);
 
 	return 0;
 
@@ -94,8 +107,10 @@
 void trace_destroy_fields(struct ftrace_event_call *call)
 {
 	struct ftrace_event_field *field, *next;
+	struct list_head *head;
 
-	list_for_each_entry_safe(field, next, &call->fields, link) {
+	head = trace_get_fields(call);
+	list_for_each_entry_safe(field, next, head, link) {
 		list_del(&field->link);
 		kfree(field->type);
 		kfree(field->name);
@@ -107,11 +122,9 @@
 {
 	int id;
 
-	id = register_ftrace_event(call->event);
+	id = register_ftrace_event(&call->event);
 	if (!id)
 		return -ENODEV;
-	call->id = id;
-	INIT_LIST_HEAD(&call->fields);
 
 	return 0;
 }
@@ -124,23 +137,33 @@
 
 	switch (enable) {
 	case 0:
-		if (call->enabled) {
-			call->enabled = 0;
+		if (call->flags & TRACE_EVENT_FL_ENABLED) {
+			call->flags &= ~TRACE_EVENT_FL_ENABLED;
 			tracing_stop_cmdline_record();
-			call->unregfunc(call);
+			if (call->class->reg)
+				call->class->reg(call, TRACE_REG_UNREGISTER);
+			else
+				tracepoint_probe_unregister(call->name,
+							    call->class->probe,
+							    call);
 		}
 		break;
 	case 1:
-		if (!call->enabled) {
+		if (!(call->flags & TRACE_EVENT_FL_ENABLED)) {
 			tracing_start_cmdline_record();
-			ret = call->regfunc(call);
+			if (call->class->reg)
+				ret = call->class->reg(call, TRACE_REG_REGISTER);
+			else
+				ret = tracepoint_probe_register(call->name,
+								call->class->probe,
+								call);
 			if (ret) {
 				tracing_stop_cmdline_record();
 				pr_info("event trace: Could not enable event "
 					"%s\n", call->name);
 				break;
 			}
-			call->enabled = 1;
+			call->flags |= TRACE_EVENT_FL_ENABLED;
 		}
 		break;
 	}
@@ -171,15 +194,16 @@
 	mutex_lock(&event_mutex);
 	list_for_each_entry(call, &ftrace_events, list) {
 
-		if (!call->name || !call->regfunc)
+		if (!call->name || !call->class ||
+		    (!call->class->probe && !call->class->reg))
 			continue;
 
 		if (match &&
 		    strcmp(match, call->name) != 0 &&
-		    strcmp(match, call->system) != 0)
+		    strcmp(match, call->class->system) != 0)
 			continue;
 
-		if (sub && strcmp(sub, call->system) != 0)
+		if (sub && strcmp(sub, call->class->system) != 0)
 			continue;
 
 		if (event && strcmp(event, call->name) != 0)
@@ -297,7 +321,7 @@
 		 * The ftrace subsystem is for showing formats only.
 		 * They can not be enabled or disabled via the event files.
 		 */
-		if (call->regfunc)
+		if (call->class && (call->class->probe || call->class->reg))
 			return call;
 	}
 
@@ -328,7 +352,7 @@
 	(*pos)++;
 
 	list_for_each_entry_continue(call, &ftrace_events, list) {
-		if (call->enabled)
+		if (call->flags & TRACE_EVENT_FL_ENABLED)
 			return call;
 	}
 
@@ -355,8 +379,8 @@
 {
 	struct ftrace_event_call *call = v;
 
-	if (strcmp(call->system, TRACE_SYSTEM) != 0)
-		seq_printf(m, "%s:", call->system);
+	if (strcmp(call->class->system, TRACE_SYSTEM) != 0)
+		seq_printf(m, "%s:", call->class->system);
 	seq_printf(m, "%s\n", call->name);
 
 	return 0;
@@ -387,7 +411,7 @@
 	struct ftrace_event_call *call = filp->private_data;
 	char *buf;
 
-	if (call->enabled)
+	if (call->flags & TRACE_EVENT_FL_ENABLED)
 		buf = "1\n";
 	else
 		buf = "0\n";
@@ -450,10 +474,11 @@
 
 	mutex_lock(&event_mutex);
 	list_for_each_entry(call, &ftrace_events, list) {
-		if (!call->name || !call->regfunc)
+		if (!call->name || !call->class ||
+		    (!call->class->probe && !call->class->reg))
 			continue;
 
-		if (system && strcmp(call->system, system) != 0)
+		if (system && strcmp(call->class->system, system) != 0)
 			continue;
 
 		/*
@@ -461,7 +486,7 @@
 		 * or if all events or cleared, or if we have
 		 * a mixture.
 		 */
-		set |= (1 << !!call->enabled);
+		set |= (1 << !!(call->flags & TRACE_EVENT_FL_ENABLED));
 
 		/*
 		 * If we have a mixture, no need to look further.
@@ -525,6 +550,7 @@
 {
 	struct ftrace_event_call *call = filp->private_data;
 	struct ftrace_event_field *field;
+	struct list_head *head;
 	struct trace_seq *s;
 	int common_field_count = 5;
 	char *buf;
@@ -540,10 +566,11 @@
 	trace_seq_init(s);
 
 	trace_seq_printf(s, "name: %s\n", call->name);
-	trace_seq_printf(s, "ID: %d\n", call->id);
+	trace_seq_printf(s, "ID: %d\n", call->event.type);
 	trace_seq_printf(s, "format:\n");
 
-	list_for_each_entry_reverse(field, &call->fields, link) {
+	head = trace_get_fields(call);
+	list_for_each_entry_reverse(field, head, link) {
 		/*
 		 * Smartly shows the array type(except dynamic array).
 		 * Normal:
@@ -613,7 +640,7 @@
 		return -ENOMEM;
 
 	trace_seq_init(s);
-	trace_seq_printf(s, "%d\n", call->id);
+	trace_seq_printf(s, "%d\n", call->event.type);
 
 	r = simple_read_from_buffer(ubuf, cnt, ppos,
 				    s->buffer, s->len);
@@ -919,14 +946,15 @@
 		 const struct file_operations *filter,
 		 const struct file_operations *format)
 {
+	struct list_head *head;
 	int ret;
 
 	/*
 	 * If the trace point header did not define TRACE_SYSTEM
 	 * then the system would be called "TRACE_SYSTEM".
 	 */
-	if (strcmp(call->system, TRACE_SYSTEM) != 0)
-		d_events = event_subsystem_dir(call->system, d_events);
+	if (strcmp(call->class->system, TRACE_SYSTEM) != 0)
+		d_events = event_subsystem_dir(call->class->system, d_events);
 
 	call->dir = debugfs_create_dir(call->name, d_events);
 	if (!call->dir) {
@@ -935,22 +963,31 @@
 		return -1;
 	}
 
-	if (call->regfunc)
+	if (call->class->probe || call->class->reg)
 		trace_create_file("enable", 0644, call->dir, call,
 				  enable);
 
-	if (call->id && call->perf_event_enable)
+#ifdef CONFIG_PERF_EVENTS
+	if (call->event.type && (call->class->perf_probe || call->class->reg))
 		trace_create_file("id", 0444, call->dir, call,
 		 		  id);
+#endif
 
-	if (call->define_fields) {
-		ret = trace_define_common_fields(call);
-		if (!ret)
-			ret = call->define_fields(call);
-		if (ret < 0) {
-			pr_warning("Could not initialize trace point"
-				   " events/%s\n", call->name);
-			return ret;
+	if (call->class->define_fields) {
+		/*
+		 * Other events may have the same class. Only update
+		 * the fields if they are not already defined.
+		 */
+		head = trace_get_fields(call);
+		if (list_empty(head)) {
+			ret = trace_define_common_fields(call);
+			if (!ret)
+				ret = call->class->define_fields(call);
+			if (ret < 0) {
+				pr_warning("Could not initialize trace point"
+					   " events/%s\n", call->name);
+				return ret;
+			}
 		}
 		trace_create_file("filter", 0644, call->dir, call,
 				  filter);
@@ -970,8 +1007,8 @@
 	if (!call->name)
 		return -EINVAL;
 
-	if (call->raw_init) {
-		ret = call->raw_init(call);
+	if (call->class->raw_init) {
+		ret = call->class->raw_init(call);
 		if (ret < 0) {
 			if (ret != -ENOSYS)
 				pr_warning("Could not initialize trace "
@@ -1035,13 +1072,13 @@
 static void __trace_remove_event_call(struct ftrace_event_call *call)
 {
 	ftrace_event_enable_disable(call, 0);
-	if (call->event)
-		__unregister_ftrace_event(call->event);
+	if (call->event.funcs)
+		__unregister_ftrace_event(&call->event);
 	debugfs_remove_recursive(call->dir);
 	list_del(&call->list);
 	trace_destroy_fields(call);
 	destroy_preds(call);
-	remove_subsystem_dir(call->system);
+	remove_subsystem_dir(call->class->system);
 }
 
 /* Remove an event_call */
@@ -1132,8 +1169,8 @@
 		/* The linker may leave blanks */
 		if (!call->name)
 			continue;
-		if (call->raw_init) {
-			ret = call->raw_init(call);
+		if (call->class->raw_init) {
+			ret = call->class->raw_init(call);
 			if (ret < 0) {
 				if (ret != -ENOSYS)
 					pr_warning("Could not initialize trace "
@@ -1286,8 +1323,8 @@
 		/* The linker may leave blanks */
 		if (!call->name)
 			continue;
-		if (call->raw_init) {
-			ret = call->raw_init(call);
+		if (call->class->raw_init) {
+			ret = call->class->raw_init(call);
 			if (ret < 0) {
 				if (ret != -ENOSYS)
 					pr_warning("Could not initialize trace "
@@ -1388,8 +1425,8 @@
 
 	list_for_each_entry(call, &ftrace_events, list) {
 
-		/* Only test those that have a regfunc */
-		if (!call->regfunc)
+		/* Only test those that have a probe */
+		if (!call->class || !call->class->probe)
 			continue;
 
 /*
@@ -1399,8 +1436,8 @@
  * syscalls as we test.
  */
 #ifndef CONFIG_EVENT_TRACE_TEST_SYSCALLS
-		if (call->system &&
-		    strcmp(call->system, "syscalls") == 0)
+		if (call->class->system &&
+		    strcmp(call->class->system, "syscalls") == 0)
 			continue;
 #endif
 
@@ -1410,7 +1447,7 @@
 		 * If an event is already enabled, someone is using
 		 * it and the self test should not be on.
 		 */
-		if (call->enabled) {
+		if (call->flags & TRACE_EVENT_FL_ENABLED) {
 			pr_warning("Enabled event during self test!\n");
 			WARN_ON_ONCE(1);
 			continue;
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 58092d8..57bb1bb 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -500,8 +500,10 @@
 find_event_field(struct ftrace_event_call *call, char *name)
 {
 	struct ftrace_event_field *field;
+	struct list_head *head;
 
-	list_for_each_entry(field, &call->fields, link) {
+	head = trace_get_fields(call);
+	list_for_each_entry(field, head, link) {
 		if (!strcmp(field->name, name))
 			return field;
 	}
@@ -545,7 +547,7 @@
 	struct event_filter *filter = call->filter;
 	int i;
 
-	call->filter_active = 0;
+	call->flags &= ~TRACE_EVENT_FL_FILTERED;
 	filter->n_preds = 0;
 
 	for (i = 0; i < MAX_FILTER_PRED; i++)
@@ -572,7 +574,7 @@
 {
 	__free_preds(call->filter);
 	call->filter = NULL;
-	call->filter_active = 0;
+	call->flags &= ~TRACE_EVENT_FL_FILTERED;
 }
 
 static struct event_filter *__alloc_preds(void)
@@ -611,7 +613,7 @@
 	if (call->filter)
 		return 0;
 
-	call->filter_active = 0;
+	call->flags &= ~TRACE_EVENT_FL_FILTERED;
 	call->filter = __alloc_preds();
 	if (IS_ERR(call->filter))
 		return PTR_ERR(call->filter);
@@ -625,10 +627,10 @@
 	int err;
 
 	list_for_each_entry(call, &ftrace_events, list) {
-		if (!call->define_fields)
+		if (!call->class || !call->class->define_fields)
 			continue;
 
-		if (strcmp(call->system, system->name) != 0)
+		if (strcmp(call->class->system, system->name) != 0)
 			continue;
 
 		err = init_preds(call);
@@ -644,10 +646,10 @@
 	struct ftrace_event_call *call;
 
 	list_for_each_entry(call, &ftrace_events, list) {
-		if (!call->define_fields)
+		if (!call->class || !call->class->define_fields)
 			continue;
 
-		if (strcmp(call->system, system->name) != 0)
+		if (strcmp(call->class->system, system->name) != 0)
 			continue;
 
 		filter_disable_preds(call);
@@ -1249,10 +1251,10 @@
 	list_for_each_entry(call, &ftrace_events, list) {
 		struct event_filter *filter = call->filter;
 
-		if (!call->define_fields)
+		if (!call->class || !call->class->define_fields)
 			continue;
 
-		if (strcmp(call->system, system->name) != 0)
+		if (strcmp(call->class->system, system->name) != 0)
 			continue;
 
 		/* try to see if the filter can be applied */
@@ -1266,7 +1268,7 @@
 		if (err)
 			filter_disable_preds(call);
 		else {
-			call->filter_active = 1;
+			call->flags |= TRACE_EVENT_FL_FILTERED;
 			replace_filter_string(filter, filter_string);
 		}
 		fail = false;
@@ -1315,7 +1317,7 @@
 	if (err)
 		append_filter_err(ps, call->filter);
 	else
-		call->filter_active = 1;
+		call->flags |= TRACE_EVENT_FL_FILTERED;
 out:
 	filter_opstack_clear(ps);
 	postfix_clear(ps);
@@ -1393,7 +1395,7 @@
 	mutex_lock(&event_mutex);
 
 	list_for_each_entry(call, &ftrace_events, list) {
-		if (call->id == event_id)
+		if (call->event.type == event_id)
 			break;
 	}
 
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index e091f64..8536e2a 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -127,7 +127,7 @@
 
 static int ftrace_raw_init_event(struct ftrace_event_call *call)
 {
-	INIT_LIST_HEAD(&call->fields);
+	INIT_LIST_HEAD(&call->class->fields);
 	return 0;
 }
 
@@ -153,17 +153,21 @@
 #define F_printk(fmt, args...) #fmt ", "  __stringify(args)
 
 #undef FTRACE_ENTRY
-#define FTRACE_ENTRY(call, struct_name, type, tstruct, print)		\
+#define FTRACE_ENTRY(call, struct_name, etype, tstruct, print)		\
+									\
+struct ftrace_event_class event_class_ftrace_##call = {			\
+	.system			= __stringify(TRACE_SYSTEM),		\
+	.define_fields		= ftrace_define_fields_##call,		\
+	.raw_init		= ftrace_raw_init_event,		\
+};									\
 									\
 struct ftrace_event_call __used						\
 __attribute__((__aligned__(4)))						\
 __attribute__((section("_ftrace_events"))) event_##call = {		\
 	.name			= #call,				\
-	.id			= type,					\
-	.system			= __stringify(TRACE_SYSTEM),		\
-	.raw_init		= ftrace_raw_init_event,		\
+	.event.type		= etype,				\
+	.class			= &event_class_ftrace_##call,		\
 	.print_fmt		= print,				\
-	.define_fields		= ftrace_define_fields_##call,		\
 };									\
 
 #include "trace_entries.h"
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index dd11c83..79f4bac 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -1025,7 +1025,7 @@
 		if (!event)
 			return TRACE_TYPE_UNHANDLED;
 
-		ret = event->trace(iter, sym_flags);
+		ret = event->funcs->trace(iter, sym_flags, event);
 		if (ret != TRACE_TYPE_HANDLED)
 			return ret;
 	}
@@ -1112,7 +1112,8 @@
 }
 
 static enum print_line_t
-print_graph_function_event(struct trace_iterator *iter, int flags)
+print_graph_function_event(struct trace_iterator *iter, int flags,
+			   struct trace_event *event)
 {
 	return print_graph_function(iter);
 }
@@ -1225,14 +1226,18 @@
 	}
 }
 
+static struct trace_event_functions graph_functions = {
+	.trace		= print_graph_function_event,
+};
+
 static struct trace_event graph_trace_entry_event = {
 	.type		= TRACE_GRAPH_ENT,
-	.trace		= print_graph_function_event,
+	.funcs		= &graph_functions,
 };
 
 static struct trace_event graph_trace_ret_event = {
 	.type		= TRACE_GRAPH_RET,
-	.trace		= print_graph_function_event,
+	.funcs		= &graph_functions
 };
 
 static struct tracer graph_trace __read_mostly = {
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index a751432..faf7cef 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -324,8 +324,8 @@
 	unsigned long 		nhit;
 	unsigned int		flags;	/* For TP_FLAG_* */
 	const char		*symbol;	/* symbol name */
+	struct ftrace_event_class	class;
 	struct ftrace_event_call	call;
-	struct trace_event		event;
 	ssize_t			size;		/* trace entry size */
 	unsigned int		nr_args;
 	struct probe_arg	args[];
@@ -404,6 +404,7 @@
 		goto error;
 	}
 
+	tp->call.class = &tp->class;
 	tp->call.name = kstrdup(event, GFP_KERNEL);
 	if (!tp->call.name)
 		goto error;
@@ -413,8 +414,8 @@
 		goto error;
 	}
 
-	tp->call.system = kstrdup(group, GFP_KERNEL);
-	if (!tp->call.system)
+	tp->class.system = kstrdup(group, GFP_KERNEL);
+	if (!tp->class.system)
 		goto error;
 
 	INIT_LIST_HEAD(&tp->list);
@@ -443,7 +444,7 @@
 	for (i = 0; i < tp->nr_args; i++)
 		free_probe_arg(&tp->args[i]);
 
-	kfree(tp->call.system);
+	kfree(tp->call.class->system);
 	kfree(tp->call.name);
 	kfree(tp->symbol);
 	kfree(tp);
@@ -456,7 +457,7 @@
 
 	list_for_each_entry(tp, &probe_list, list)
 		if (strcmp(tp->call.name, event) == 0 &&
-		    strcmp(tp->call.system, group) == 0)
+		    strcmp(tp->call.class->system, group) == 0)
 			return tp;
 	return NULL;
 }
@@ -481,7 +482,7 @@
 	mutex_lock(&probe_lock);
 
 	/* register as an event */
-	old_tp = find_probe_event(tp->call.name, tp->call.system);
+	old_tp = find_probe_event(tp->call.name, tp->call.class->system);
 	if (old_tp) {
 		/* delete old event */
 		unregister_trace_probe(old_tp);
@@ -904,7 +905,7 @@
 	int i;
 
 	seq_printf(m, "%c", probe_is_return(tp) ? 'r' : 'p');
-	seq_printf(m, ":%s/%s", tp->call.system, tp->call.name);
+	seq_printf(m, ":%s/%s", tp->call.class->system, tp->call.name);
 
 	if (!tp->symbol)
 		seq_printf(m, " 0x%p", tp->rp.kp.addr);
@@ -1061,8 +1062,8 @@
 
 	size = sizeof(*entry) + tp->size;
 
-	event = trace_current_buffer_lock_reserve(&buffer, call->id, size,
-						  irq_flags, pc);
+	event = trace_current_buffer_lock_reserve(&buffer, call->event.type,
+						  size, irq_flags, pc);
 	if (!event)
 		return;
 
@@ -1094,8 +1095,8 @@
 
 	size = sizeof(*entry) + tp->size;
 
-	event = trace_current_buffer_lock_reserve(&buffer, call->id, size,
-						  irq_flags, pc);
+	event = trace_current_buffer_lock_reserve(&buffer, call->event.type,
+						  size, irq_flags, pc);
 	if (!event)
 		return;
 
@@ -1112,18 +1113,17 @@
 
 /* Event entry printers */
 enum print_line_t
-print_kprobe_event(struct trace_iterator *iter, int flags)
+print_kprobe_event(struct trace_iterator *iter, int flags,
+		   struct trace_event *event)
 {
 	struct kprobe_trace_entry_head *field;
 	struct trace_seq *s = &iter->seq;
-	struct trace_event *event;
 	struct trace_probe *tp;
 	u8 *data;
 	int i;
 
 	field = (struct kprobe_trace_entry_head *)iter->ent;
-	event = ftrace_find_event(field->ent.type);
-	tp = container_of(event, struct trace_probe, event);
+	tp = container_of(event, struct trace_probe, call.event);
 
 	if (!trace_seq_printf(s, "%s: (", tp->call.name))
 		goto partial;
@@ -1149,18 +1149,17 @@
 }
 
 enum print_line_t
-print_kretprobe_event(struct trace_iterator *iter, int flags)
+print_kretprobe_event(struct trace_iterator *iter, int flags,
+		      struct trace_event *event)
 {
 	struct kretprobe_trace_entry_head *field;
 	struct trace_seq *s = &iter->seq;
-	struct trace_event *event;
 	struct trace_probe *tp;
 	u8 *data;
 	int i;
 
 	field = (struct kretprobe_trace_entry_head *)iter->ent;
-	event = ftrace_find_event(field->ent.type);
-	tp = container_of(event, struct trace_probe, event);
+	tp = container_of(event, struct trace_probe, call.event);
 
 	if (!trace_seq_printf(s, "%s: (", tp->call.name))
 		goto partial;
@@ -1217,8 +1216,6 @@
 
 static int probe_event_raw_init(struct ftrace_event_call *event_call)
 {
-	INIT_LIST_HEAD(&event_call->fields);
-
 	return 0;
 }
 
@@ -1341,9 +1338,9 @@
 	struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
 	struct ftrace_event_call *call = &tp->call;
 	struct kprobe_trace_entry_head *entry;
+	struct hlist_head *head;
 	u8 *data;
 	int size, __size, i;
-	unsigned long irq_flags;
 	int rctx;
 
 	__size = sizeof(*entry) + tp->size;
@@ -1353,7 +1350,7 @@
 		     "profile buffer not large enough"))
 		return;
 
-	entry = perf_trace_buf_prepare(size, call->id, &rctx, &irq_flags);
+	entry = perf_trace_buf_prepare(size, call->event.type, regs, &rctx);
 	if (!entry)
 		return;
 
@@ -1362,7 +1359,8 @@
 	for (i = 0; i < tp->nr_args; i++)
 		call_fetch(&tp->args[i].fetch, regs, data + tp->args[i].offset);
 
-	perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, irq_flags, regs);
+	head = per_cpu_ptr(call->perf_events, smp_processor_id());
+	perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head);
 }
 
 /* Kretprobe profile handler */
@@ -1372,9 +1370,9 @@
 	struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
 	struct ftrace_event_call *call = &tp->call;
 	struct kretprobe_trace_entry_head *entry;
+	struct hlist_head *head;
 	u8 *data;
 	int size, __size, i;
-	unsigned long irq_flags;
 	int rctx;
 
 	__size = sizeof(*entry) + tp->size;
@@ -1384,7 +1382,7 @@
 		     "profile buffer not large enough"))
 		return;
 
-	entry = perf_trace_buf_prepare(size, call->id, &rctx, &irq_flags);
+	entry = perf_trace_buf_prepare(size, call->event.type, regs, &rctx);
 	if (!entry)
 		return;
 
@@ -1394,8 +1392,8 @@
 	for (i = 0; i < tp->nr_args; i++)
 		call_fetch(&tp->args[i].fetch, regs, data + tp->args[i].offset);
 
-	perf_trace_buf_submit(entry, size, rctx, entry->ret_ip, 1,
-			       irq_flags, regs);
+	head = per_cpu_ptr(call->perf_events, smp_processor_id());
+	perf_trace_buf_submit(entry, size, rctx, entry->ret_ip, 1, regs, head);
 }
 
 static int probe_perf_enable(struct ftrace_event_call *call)
@@ -1425,6 +1423,26 @@
 }
 #endif	/* CONFIG_PERF_EVENTS */
 
+static __kprobes
+int kprobe_register(struct ftrace_event_call *event, enum trace_reg type)
+{
+	switch (type) {
+	case TRACE_REG_REGISTER:
+		return probe_event_enable(event);
+	case TRACE_REG_UNREGISTER:
+		probe_event_disable(event);
+		return 0;
+
+#ifdef CONFIG_PERF_EVENTS
+	case TRACE_REG_PERF_REGISTER:
+		return probe_perf_enable(event);
+	case TRACE_REG_PERF_UNREGISTER:
+		probe_perf_disable(event);
+		return 0;
+#endif
+	}
+	return 0;
+}
 
 static __kprobes
 int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs)
@@ -1454,6 +1472,14 @@
 	return 0;	/* We don't tweek kernel, so just return 0 */
 }
 
+static struct trace_event_functions kretprobe_funcs = {
+	.trace		= print_kretprobe_event
+};
+
+static struct trace_event_functions kprobe_funcs = {
+	.trace		= print_kprobe_event
+};
+
 static int register_probe_event(struct trace_probe *tp)
 {
 	struct ftrace_event_call *call = &tp->call;
@@ -1461,36 +1487,31 @@
 
 	/* Initialize ftrace_event_call */
 	if (probe_is_return(tp)) {
-		tp->event.trace = print_kretprobe_event;
-		call->raw_init = probe_event_raw_init;
-		call->define_fields = kretprobe_event_define_fields;
+		INIT_LIST_HEAD(&call->class->fields);
+		call->event.funcs = &kretprobe_funcs;
+		call->class->raw_init = probe_event_raw_init;
+		call->class->define_fields = kretprobe_event_define_fields;
 	} else {
-		tp->event.trace = print_kprobe_event;
-		call->raw_init = probe_event_raw_init;
-		call->define_fields = kprobe_event_define_fields;
+		INIT_LIST_HEAD(&call->class->fields);
+		call->event.funcs = &kprobe_funcs;
+		call->class->raw_init = probe_event_raw_init;
+		call->class->define_fields = kprobe_event_define_fields;
 	}
 	if (set_print_fmt(tp) < 0)
 		return -ENOMEM;
-	call->event = &tp->event;
-	call->id = register_ftrace_event(&tp->event);
-	if (!call->id) {
+	ret = register_ftrace_event(&call->event);
+	if (!ret) {
 		kfree(call->print_fmt);
 		return -ENODEV;
 	}
-	call->enabled = 0;
-	call->regfunc = probe_event_enable;
-	call->unregfunc = probe_event_disable;
-
-#ifdef CONFIG_PERF_EVENTS
-	call->perf_event_enable = probe_perf_enable;
-	call->perf_event_disable = probe_perf_disable;
-#endif
+	call->flags = 0;
+	call->class->reg = kprobe_register;
 	call->data = tp;
 	ret = trace_add_event_call(call);
 	if (ret) {
 		pr_info("Failed to register kprobe event: %s\n", call->name);
 		kfree(call->print_fmt);
-		unregister_ftrace_event(&tp->event);
+		unregister_ftrace_event(&call->event);
 	}
 	return ret;
 }
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ab13d70..57c1b45 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -742,6 +742,9 @@
 	if (WARN_ON(!event))
 		goto out;
 
+	if (WARN_ON(!event->funcs))
+		goto out;
+
 	INIT_LIST_HEAD(&event->list);
 
 	if (!event->type) {
@@ -774,14 +777,14 @@
 			goto out;
 	}
 
-	if (event->trace == NULL)
-		event->trace = trace_nop_print;
-	if (event->raw == NULL)
-		event->raw = trace_nop_print;
-	if (event->hex == NULL)
-		event->hex = trace_nop_print;
-	if (event->binary == NULL)
-		event->binary = trace_nop_print;
+	if (event->funcs->trace == NULL)
+		event->funcs->trace = trace_nop_print;
+	if (event->funcs->raw == NULL)
+		event->funcs->raw = trace_nop_print;
+	if (event->funcs->hex == NULL)
+		event->funcs->hex = trace_nop_print;
+	if (event->funcs->binary == NULL)
+		event->funcs->binary = trace_nop_print;
 
 	key = event->type & (EVENT_HASHSIZE - 1);
 
@@ -823,13 +826,15 @@
  * Standard events
  */
 
-enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags)
+enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags,
+				  struct trace_event *event)
 {
 	return TRACE_TYPE_HANDLED;
 }
 
 /* TRACE_FN */
-static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags,
+					struct trace_event *event)
 {
 	struct ftrace_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -856,7 +861,8 @@
 	return TRACE_TYPE_PARTIAL_LINE;
 }
 
-static enum print_line_t trace_fn_raw(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_fn_raw(struct trace_iterator *iter, int flags,
+				      struct trace_event *event)
 {
 	struct ftrace_entry *field;
 
@@ -870,7 +876,8 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static enum print_line_t trace_fn_hex(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_fn_hex(struct trace_iterator *iter, int flags,
+				      struct trace_event *event)
 {
 	struct ftrace_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -883,7 +890,8 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_fn_bin(struct trace_iterator *iter, int flags,
+				      struct trace_event *event)
 {
 	struct ftrace_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -896,14 +904,18 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static struct trace_event trace_fn_event = {
-	.type		= TRACE_FN,
+static struct trace_event_functions trace_fn_funcs = {
 	.trace		= trace_fn_trace,
 	.raw		= trace_fn_raw,
 	.hex		= trace_fn_hex,
 	.binary		= trace_fn_bin,
 };
 
+static struct trace_event trace_fn_event = {
+	.type		= TRACE_FN,
+	.funcs		= &trace_fn_funcs,
+};
+
 /* TRACE_CTX an TRACE_WAKE */
 static enum print_line_t trace_ctxwake_print(struct trace_iterator *iter,
 					     char *delim)
@@ -932,13 +944,14 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static enum print_line_t trace_ctx_print(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_ctx_print(struct trace_iterator *iter, int flags,
+					 struct trace_event *event)
 {
 	return trace_ctxwake_print(iter, "==>");
 }
 
 static enum print_line_t trace_wake_print(struct trace_iterator *iter,
-					  int flags)
+					  int flags, struct trace_event *event)
 {
 	return trace_ctxwake_print(iter, "  +");
 }
@@ -966,12 +979,14 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static enum print_line_t trace_ctx_raw(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_ctx_raw(struct trace_iterator *iter, int flags,
+				       struct trace_event *event)
 {
 	return trace_ctxwake_raw(iter, 0);
 }
 
-static enum print_line_t trace_wake_raw(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_wake_raw(struct trace_iterator *iter, int flags,
+					struct trace_event *event)
 {
 	return trace_ctxwake_raw(iter, '+');
 }
@@ -1000,18 +1015,20 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static enum print_line_t trace_ctx_hex(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_ctx_hex(struct trace_iterator *iter, int flags,
+				       struct trace_event *event)
 {
 	return trace_ctxwake_hex(iter, 0);
 }
 
-static enum print_line_t trace_wake_hex(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_wake_hex(struct trace_iterator *iter, int flags,
+					struct trace_event *event)
 {
 	return trace_ctxwake_hex(iter, '+');
 }
 
 static enum print_line_t trace_ctxwake_bin(struct trace_iterator *iter,
-					   int flags)
+					   int flags, struct trace_event *event)
 {
 	struct ctx_switch_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1028,25 +1045,33 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static struct trace_event trace_ctx_event = {
-	.type		= TRACE_CTX,
+static struct trace_event_functions trace_ctx_funcs = {
 	.trace		= trace_ctx_print,
 	.raw		= trace_ctx_raw,
 	.hex		= trace_ctx_hex,
 	.binary		= trace_ctxwake_bin,
 };
 
-static struct trace_event trace_wake_event = {
-	.type		= TRACE_WAKE,
+static struct trace_event trace_ctx_event = {
+	.type		= TRACE_CTX,
+	.funcs		= &trace_ctx_funcs,
+};
+
+static struct trace_event_functions trace_wake_funcs = {
 	.trace		= trace_wake_print,
 	.raw		= trace_wake_raw,
 	.hex		= trace_wake_hex,
 	.binary		= trace_ctxwake_bin,
 };
 
+static struct trace_event trace_wake_event = {
+	.type		= TRACE_WAKE,
+	.funcs		= &trace_wake_funcs,
+};
+
 /* TRACE_SPECIAL */
 static enum print_line_t trace_special_print(struct trace_iterator *iter,
-					     int flags)
+					     int flags, struct trace_event *event)
 {
 	struct special_entry *field;
 
@@ -1062,7 +1087,7 @@
 }
 
 static enum print_line_t trace_special_hex(struct trace_iterator *iter,
-					   int flags)
+					   int flags, struct trace_event *event)
 {
 	struct special_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1077,7 +1102,7 @@
 }
 
 static enum print_line_t trace_special_bin(struct trace_iterator *iter,
-					   int flags)
+					   int flags, struct trace_event *event)
 {
 	struct special_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1091,18 +1116,22 @@
 	return TRACE_TYPE_HANDLED;
 }
 
-static struct trace_event trace_special_event = {
-	.type		= TRACE_SPECIAL,
+static struct trace_event_functions trace_special_funcs = {
 	.trace		= trace_special_print,
 	.raw		= trace_special_print,
 	.hex		= trace_special_hex,
 	.binary		= trace_special_bin,
 };
 
+static struct trace_event trace_special_event = {
+	.type		= TRACE_SPECIAL,
+	.funcs		= &trace_special_funcs,
+};
+
 /* TRACE_STACK */
 
 static enum print_line_t trace_stack_print(struct trace_iterator *iter,
-					   int flags)
+					   int flags, struct trace_event *event)
 {
 	struct stack_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1130,17 +1159,21 @@
 	return TRACE_TYPE_PARTIAL_LINE;
 }
 
-static struct trace_event trace_stack_event = {
-	.type		= TRACE_STACK,
+static struct trace_event_functions trace_stack_funcs = {
 	.trace		= trace_stack_print,
 	.raw		= trace_special_print,
 	.hex		= trace_special_hex,
 	.binary		= trace_special_bin,
 };
 
+static struct trace_event trace_stack_event = {
+	.type		= TRACE_STACK,
+	.funcs		= &trace_stack_funcs,
+};
+
 /* TRACE_USER_STACK */
 static enum print_line_t trace_user_stack_print(struct trace_iterator *iter,
-						int flags)
+						int flags, struct trace_event *event)
 {
 	struct userstack_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1159,17 +1192,22 @@
 	return TRACE_TYPE_PARTIAL_LINE;
 }
 
-static struct trace_event trace_user_stack_event = {
-	.type		= TRACE_USER_STACK,
+static struct trace_event_functions trace_user_stack_funcs = {
 	.trace		= trace_user_stack_print,
 	.raw		= trace_special_print,
 	.hex		= trace_special_hex,
 	.binary		= trace_special_bin,
 };
 
+static struct trace_event trace_user_stack_event = {
+	.type		= TRACE_USER_STACK,
+	.funcs		= &trace_user_stack_funcs,
+};
+
 /* TRACE_BPRINT */
 static enum print_line_t
-trace_bprint_print(struct trace_iterator *iter, int flags)
+trace_bprint_print(struct trace_iterator *iter, int flags,
+		   struct trace_event *event)
 {
 	struct trace_entry *entry = iter->ent;
 	struct trace_seq *s = &iter->seq;
@@ -1194,7 +1232,8 @@
 
 
 static enum print_line_t
-trace_bprint_raw(struct trace_iterator *iter, int flags)
+trace_bprint_raw(struct trace_iterator *iter, int flags,
+		 struct trace_event *event)
 {
 	struct bprint_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1213,16 +1252,19 @@
 	return TRACE_TYPE_PARTIAL_LINE;
 }
 
-
-static struct trace_event trace_bprint_event = {
-	.type		= TRACE_BPRINT,
+static struct trace_event_functions trace_bprint_funcs = {
 	.trace		= trace_bprint_print,
 	.raw		= trace_bprint_raw,
 };
 
+static struct trace_event trace_bprint_event = {
+	.type		= TRACE_BPRINT,
+	.funcs		= &trace_bprint_funcs,
+};
+
 /* TRACE_PRINT */
 static enum print_line_t trace_print_print(struct trace_iterator *iter,
-					   int flags)
+					   int flags, struct trace_event *event)
 {
 	struct print_entry *field;
 	struct trace_seq *s = &iter->seq;
@@ -1241,7 +1283,8 @@
 	return TRACE_TYPE_PARTIAL_LINE;
 }
 
-static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags)
+static enum print_line_t trace_print_raw(struct trace_iterator *iter, int flags,
+					 struct trace_event *event)
 {
 	struct print_entry *field;
 
@@ -1256,12 +1299,16 @@
 	return TRACE_TYPE_PARTIAL_LINE;
 }
 
-static struct trace_event trace_print_event = {
-	.type	 	= TRACE_PRINT,
+static struct trace_event_functions trace_print_funcs = {
 	.trace		= trace_print_print,
 	.raw		= trace_print_raw,
 };
 
+static struct trace_event trace_print_event = {
+	.type	 	= TRACE_PRINT,
+	.funcs		= &trace_print_funcs,
+};
+
 
 static struct trace_event *events[] __initdata = {
 	&trace_fn_event,
diff --git a/kernel/trace/trace_output.h b/kernel/trace/trace_output.h
index 9d91c72..c038eba 100644
--- a/kernel/trace/trace_output.h
+++ b/kernel/trace/trace_output.h
@@ -25,7 +25,7 @@
 extern struct trace_event *ftrace_find_event(int type);
 
 extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
-					 int flags);
+					 int flags, struct trace_event *event);
 extern int
 trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);
 
diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c
index a55fccf..8f758d0 100644
--- a/kernel/trace/trace_sched_switch.c
+++ b/kernel/trace/trace_sched_switch.c
@@ -50,7 +50,7 @@
 }
 
 static void
-probe_sched_switch(struct task_struct *prev, struct task_struct *next)
+probe_sched_switch(void *ignore, struct task_struct *prev, struct task_struct *next)
 {
 	struct trace_array_cpu *data;
 	unsigned long flags;
@@ -108,7 +108,7 @@
 }
 
 static void
-probe_sched_wakeup(struct task_struct *wakee, int success)
+probe_sched_wakeup(void *ignore, struct task_struct *wakee, int success)
 {
 	struct trace_array_cpu *data;
 	unsigned long flags;
@@ -138,21 +138,21 @@
 {
 	int ret;
 
-	ret = register_trace_sched_wakeup(probe_sched_wakeup);
+	ret = register_trace_sched_wakeup(probe_sched_wakeup, NULL);
 	if (ret) {
 		pr_info("wakeup trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_wakeup\n");
 		return ret;
 	}
 
-	ret = register_trace_sched_wakeup_new(probe_sched_wakeup);
+	ret = register_trace_sched_wakeup_new(probe_sched_wakeup, NULL);
 	if (ret) {
 		pr_info("wakeup trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_wakeup_new\n");
 		goto fail_deprobe;
 	}
 
-	ret = register_trace_sched_switch(probe_sched_switch);
+	ret = register_trace_sched_switch(probe_sched_switch, NULL);
 	if (ret) {
 		pr_info("sched trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_switch\n");
@@ -161,17 +161,17 @@
 
 	return ret;
 fail_deprobe_wake_new:
-	unregister_trace_sched_wakeup_new(probe_sched_wakeup);
+	unregister_trace_sched_wakeup_new(probe_sched_wakeup, NULL);
 fail_deprobe:
-	unregister_trace_sched_wakeup(probe_sched_wakeup);
+	unregister_trace_sched_wakeup(probe_sched_wakeup, NULL);
 	return ret;
 }
 
 static void tracing_sched_unregister(void)
 {
-	unregister_trace_sched_switch(probe_sched_switch);
-	unregister_trace_sched_wakeup_new(probe_sched_wakeup);
-	unregister_trace_sched_wakeup(probe_sched_wakeup);
+	unregister_trace_sched_switch(probe_sched_switch, NULL);
+	unregister_trace_sched_wakeup_new(probe_sched_wakeup, NULL);
+	unregister_trace_sched_wakeup(probe_sched_wakeup, NULL);
 }
 
 static void tracing_start_sched_switch(void)
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 8052446..0e73bc2 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -98,7 +98,8 @@
 	return 1;
 }
 
-static void probe_wakeup_migrate_task(struct task_struct *task, int cpu)
+static void
+probe_wakeup_migrate_task(void *ignore, struct task_struct *task, int cpu)
 {
 	if (task != wakeup_task)
 		return;
@@ -107,7 +108,8 @@
 }
 
 static void notrace
-probe_wakeup_sched_switch(struct task_struct *prev, struct task_struct *next)
+probe_wakeup_sched_switch(void *ignore,
+			  struct task_struct *prev, struct task_struct *next)
 {
 	struct trace_array_cpu *data;
 	cycle_t T0, T1, delta;
@@ -199,7 +201,7 @@
 }
 
 static void
-probe_wakeup(struct task_struct *p, int success)
+probe_wakeup(void *ignore, struct task_struct *p, int success)
 {
 	struct trace_array_cpu *data;
 	int cpu = smp_processor_id();
@@ -263,28 +265,28 @@
 {
 	int ret;
 
-	ret = register_trace_sched_wakeup(probe_wakeup);
+	ret = register_trace_sched_wakeup(probe_wakeup, NULL);
 	if (ret) {
 		pr_info("wakeup trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_wakeup\n");
 		return;
 	}
 
-	ret = register_trace_sched_wakeup_new(probe_wakeup);
+	ret = register_trace_sched_wakeup_new(probe_wakeup, NULL);
 	if (ret) {
 		pr_info("wakeup trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_wakeup_new\n");
 		goto fail_deprobe;
 	}
 
-	ret = register_trace_sched_switch(probe_wakeup_sched_switch);
+	ret = register_trace_sched_switch(probe_wakeup_sched_switch, NULL);
 	if (ret) {
 		pr_info("sched trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_switch\n");
 		goto fail_deprobe_wake_new;
 	}
 
-	ret = register_trace_sched_migrate_task(probe_wakeup_migrate_task);
+	ret = register_trace_sched_migrate_task(probe_wakeup_migrate_task, NULL);
 	if (ret) {
 		pr_info("wakeup trace: Couldn't activate tracepoint"
 			" probe to kernel_sched_migrate_task\n");
@@ -311,19 +313,19 @@
 
 	return;
 fail_deprobe_wake_new:
-	unregister_trace_sched_wakeup_new(probe_wakeup);
+	unregister_trace_sched_wakeup_new(probe_wakeup, NULL);
 fail_deprobe:
-	unregister_trace_sched_wakeup(probe_wakeup);
+	unregister_trace_sched_wakeup(probe_wakeup, NULL);
 }
 
 static void stop_wakeup_tracer(struct trace_array *tr)
 {
 	tracer_enabled = 0;
 	unregister_ftrace_function(&trace_ops);
-	unregister_trace_sched_switch(probe_wakeup_sched_switch);
-	unregister_trace_sched_wakeup_new(probe_wakeup);
-	unregister_trace_sched_wakeup(probe_wakeup);
-	unregister_trace_sched_migrate_task(probe_wakeup_migrate_task);
+	unregister_trace_sched_switch(probe_wakeup_sched_switch, NULL);
+	unregister_trace_sched_wakeup_new(probe_wakeup, NULL);
+	unregister_trace_sched_wakeup(probe_wakeup, NULL);
+	unregister_trace_sched_migrate_task(probe_wakeup_migrate_task, NULL);
 }
 
 static int __wakeup_tracer_init(struct trace_array *tr)
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 4d6d711..d2c859c 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -15,6 +15,54 @@
 static DECLARE_BITMAP(enabled_enter_syscalls, NR_syscalls);
 static DECLARE_BITMAP(enabled_exit_syscalls, NR_syscalls);
 
+static int syscall_enter_register(struct ftrace_event_call *event,
+				 enum trace_reg type);
+static int syscall_exit_register(struct ftrace_event_call *event,
+				 enum trace_reg type);
+
+static int syscall_enter_define_fields(struct ftrace_event_call *call);
+static int syscall_exit_define_fields(struct ftrace_event_call *call);
+
+static struct list_head *
+syscall_get_enter_fields(struct ftrace_event_call *call)
+{
+	struct syscall_metadata *entry = call->data;
+
+	return &entry->enter_fields;
+}
+
+static struct list_head *
+syscall_get_exit_fields(struct ftrace_event_call *call)
+{
+	struct syscall_metadata *entry = call->data;
+
+	return &entry->exit_fields;
+}
+
+struct trace_event_functions enter_syscall_print_funcs = {
+	.trace                  = print_syscall_enter,
+};
+
+struct trace_event_functions exit_syscall_print_funcs = {
+	.trace                  = print_syscall_exit,
+};
+
+struct ftrace_event_class event_class_syscall_enter = {
+	.system			= "syscalls",
+	.reg			= syscall_enter_register,
+	.define_fields		= syscall_enter_define_fields,
+	.get_fields		= syscall_get_enter_fields,
+	.raw_init		= init_syscall_trace,
+};
+
+struct ftrace_event_class event_class_syscall_exit = {
+	.system			= "syscalls",
+	.reg			= syscall_exit_register,
+	.define_fields		= syscall_exit_define_fields,
+	.get_fields		= syscall_get_exit_fields,
+	.raw_init		= init_syscall_trace,
+};
+
 extern unsigned long __start_syscalls_metadata[];
 extern unsigned long __stop_syscalls_metadata[];
 
@@ -53,7 +101,8 @@
 }
 
 enum print_line_t
-print_syscall_enter(struct trace_iterator *iter, int flags)
+print_syscall_enter(struct trace_iterator *iter, int flags,
+		    struct trace_event *event)
 {
 	struct trace_seq *s = &iter->seq;
 	struct trace_entry *ent = iter->ent;
@@ -68,7 +117,7 @@
 	if (!entry)
 		goto end;
 
-	if (entry->enter_event->id != ent->type) {
+	if (entry->enter_event->event.type != ent->type) {
 		WARN_ON_ONCE(1);
 		goto end;
 	}
@@ -105,7 +154,8 @@
 }
 
 enum print_line_t
-print_syscall_exit(struct trace_iterator *iter, int flags)
+print_syscall_exit(struct trace_iterator *iter, int flags,
+		   struct trace_event *event)
 {
 	struct trace_seq *s = &iter->seq;
 	struct trace_entry *ent = iter->ent;
@@ -123,7 +173,7 @@
 		return TRACE_TYPE_HANDLED;
 	}
 
-	if (entry->exit_event->id != ent->type) {
+	if (entry->exit_event->event.type != ent->type) {
 		WARN_ON_ONCE(1);
 		return TRACE_TYPE_UNHANDLED;
 	}
@@ -205,7 +255,7 @@
 		kfree(call->print_fmt);
 }
 
-int syscall_enter_define_fields(struct ftrace_event_call *call)
+static int syscall_enter_define_fields(struct ftrace_event_call *call)
 {
 	struct syscall_trace_enter trace;
 	struct syscall_metadata *meta = call->data;
@@ -228,7 +278,7 @@
 	return ret;
 }
 
-int syscall_exit_define_fields(struct ftrace_event_call *call)
+static int syscall_exit_define_fields(struct ftrace_event_call *call)
 {
 	struct syscall_trace_exit trace;
 	int ret;
@@ -243,7 +293,7 @@
 	return ret;
 }
 
-void ftrace_syscall_enter(struct pt_regs *regs, long id)
+void ftrace_syscall_enter(void *ignore, struct pt_regs *regs, long id)
 {
 	struct syscall_trace_enter *entry;
 	struct syscall_metadata *sys_data;
@@ -265,7 +315,7 @@
 	size = sizeof(*entry) + sizeof(unsigned long) * sys_data->nb_args;
 
 	event = trace_current_buffer_lock_reserve(&buffer,
-			sys_data->enter_event->id, size, 0, 0);
+			sys_data->enter_event->event.type, size, 0, 0);
 	if (!event)
 		return;
 
@@ -278,7 +328,7 @@
 		trace_current_buffer_unlock_commit(buffer, event, 0, 0);
 }
 
-void ftrace_syscall_exit(struct pt_regs *regs, long ret)
+void ftrace_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
 {
 	struct syscall_trace_exit *entry;
 	struct syscall_metadata *sys_data;
@@ -297,7 +347,7 @@
 		return;
 
 	event = trace_current_buffer_lock_reserve(&buffer,
-			sys_data->exit_event->id, sizeof(*entry), 0, 0);
+			sys_data->exit_event->event.type, sizeof(*entry), 0, 0);
 	if (!event)
 		return;
 
@@ -320,7 +370,7 @@
 		return -ENOSYS;
 	mutex_lock(&syscall_trace_lock);
 	if (!sys_refcount_enter)
-		ret = register_trace_sys_enter(ftrace_syscall_enter);
+		ret = register_trace_sys_enter(ftrace_syscall_enter, NULL);
 	if (!ret) {
 		set_bit(num, enabled_enter_syscalls);
 		sys_refcount_enter++;
@@ -340,7 +390,7 @@
 	sys_refcount_enter--;
 	clear_bit(num, enabled_enter_syscalls);
 	if (!sys_refcount_enter)
-		unregister_trace_sys_enter(ftrace_syscall_enter);
+		unregister_trace_sys_enter(ftrace_syscall_enter, NULL);
 	mutex_unlock(&syscall_trace_lock);
 }
 
@@ -354,7 +404,7 @@
 		return -ENOSYS;
 	mutex_lock(&syscall_trace_lock);
 	if (!sys_refcount_exit)
-		ret = register_trace_sys_exit(ftrace_syscall_exit);
+		ret = register_trace_sys_exit(ftrace_syscall_exit, NULL);
 	if (!ret) {
 		set_bit(num, enabled_exit_syscalls);
 		sys_refcount_exit++;
@@ -374,7 +424,7 @@
 	sys_refcount_exit--;
 	clear_bit(num, enabled_exit_syscalls);
 	if (!sys_refcount_exit)
-		unregister_trace_sys_exit(ftrace_syscall_exit);
+		unregister_trace_sys_exit(ftrace_syscall_exit, NULL);
 	mutex_unlock(&syscall_trace_lock);
 }
 
@@ -434,11 +484,11 @@
 static int sys_perf_refcount_enter;
 static int sys_perf_refcount_exit;
 
-static void perf_syscall_enter(struct pt_regs *regs, long id)
+static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
 {
 	struct syscall_metadata *sys_data;
 	struct syscall_trace_enter *rec;
-	unsigned long flags;
+	struct hlist_head *head;
 	int syscall_nr;
 	int rctx;
 	int size;
@@ -461,14 +511,16 @@
 		return;
 
 	rec = (struct syscall_trace_enter *)perf_trace_buf_prepare(size,
-				sys_data->enter_event->id, &rctx, &flags);
+				sys_data->enter_event->event.type, regs, &rctx);
 	if (!rec)
 		return;
 
 	rec->nr = syscall_nr;
 	syscall_get_arguments(current, regs, 0, sys_data->nb_args,
 			       (unsigned long *)&rec->args);
-	perf_trace_buf_submit(rec, size, rctx, 0, 1, flags, regs);
+
+	head = per_cpu_ptr(sys_data->enter_event->perf_events, smp_processor_id());
+	perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
 }
 
 int perf_sysenter_enable(struct ftrace_event_call *call)
@@ -480,7 +532,7 @@
 
 	mutex_lock(&syscall_trace_lock);
 	if (!sys_perf_refcount_enter)
-		ret = register_trace_sys_enter(perf_syscall_enter);
+		ret = register_trace_sys_enter(perf_syscall_enter, NULL);
 	if (ret) {
 		pr_info("event trace: Could not activate"
 				"syscall entry trace point");
@@ -502,15 +554,15 @@
 	sys_perf_refcount_enter--;
 	clear_bit(num, enabled_perf_enter_syscalls);
 	if (!sys_perf_refcount_enter)
-		unregister_trace_sys_enter(perf_syscall_enter);
+		unregister_trace_sys_enter(perf_syscall_enter, NULL);
 	mutex_unlock(&syscall_trace_lock);
 }
 
-static void perf_syscall_exit(struct pt_regs *regs, long ret)
+static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
 {
 	struct syscall_metadata *sys_data;
 	struct syscall_trace_exit *rec;
-	unsigned long flags;
+	struct hlist_head *head;
 	int syscall_nr;
 	int rctx;
 	int size;
@@ -536,14 +588,15 @@
 		return;
 
 	rec = (struct syscall_trace_exit *)perf_trace_buf_prepare(size,
-				sys_data->exit_event->id, &rctx, &flags);
+				sys_data->exit_event->event.type, regs, &rctx);
 	if (!rec)
 		return;
 
 	rec->nr = syscall_nr;
 	rec->ret = syscall_get_return_value(current, regs);
 
-	perf_trace_buf_submit(rec, size, rctx, 0, 1, flags, regs);
+	head = per_cpu_ptr(sys_data->exit_event->perf_events, smp_processor_id());
+	perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
 }
 
 int perf_sysexit_enable(struct ftrace_event_call *call)
@@ -555,7 +608,7 @@
 
 	mutex_lock(&syscall_trace_lock);
 	if (!sys_perf_refcount_exit)
-		ret = register_trace_sys_exit(perf_syscall_exit);
+		ret = register_trace_sys_exit(perf_syscall_exit, NULL);
 	if (ret) {
 		pr_info("event trace: Could not activate"
 				"syscall exit trace point");
@@ -577,9 +630,50 @@
 	sys_perf_refcount_exit--;
 	clear_bit(num, enabled_perf_exit_syscalls);
 	if (!sys_perf_refcount_exit)
-		unregister_trace_sys_exit(perf_syscall_exit);
+		unregister_trace_sys_exit(perf_syscall_exit, NULL);
 	mutex_unlock(&syscall_trace_lock);
 }
 
 #endif /* CONFIG_PERF_EVENTS */
 
+static int syscall_enter_register(struct ftrace_event_call *event,
+				 enum trace_reg type)
+{
+	switch (type) {
+	case TRACE_REG_REGISTER:
+		return reg_event_syscall_enter(event);
+	case TRACE_REG_UNREGISTER:
+		unreg_event_syscall_enter(event);
+		return 0;
+
+#ifdef CONFIG_PERF_EVENTS
+	case TRACE_REG_PERF_REGISTER:
+		return perf_sysenter_enable(event);
+	case TRACE_REG_PERF_UNREGISTER:
+		perf_sysenter_disable(event);
+		return 0;
+#endif
+	}
+	return 0;
+}
+
+static int syscall_exit_register(struct ftrace_event_call *event,
+				 enum trace_reg type)
+{
+	switch (type) {
+	case TRACE_REG_REGISTER:
+		return reg_event_syscall_exit(event);
+	case TRACE_REG_UNREGISTER:
+		unreg_event_syscall_exit(event);
+		return 0;
+
+#ifdef CONFIG_PERF_EVENTS
+	case TRACE_REG_PERF_REGISTER:
+		return perf_sysexit_enable(event);
+	case TRACE_REG_PERF_UNREGISTER:
+		perf_sysexit_disable(event);
+		return 0;
+#endif
+	}
+	return 0;
+}
diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index cc2d2fa..a7cc379 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -49,7 +49,8 @@
 
 /* Insertion of a work */
 static void
-probe_workqueue_insertion(struct task_struct *wq_thread,
+probe_workqueue_insertion(void *ignore,
+			  struct task_struct *wq_thread,
 			  struct work_struct *work)
 {
 	int cpu = cpumask_first(&wq_thread->cpus_allowed);
@@ -70,7 +71,8 @@
 
 /* Execution of a work */
 static void
-probe_workqueue_execution(struct task_struct *wq_thread,
+probe_workqueue_execution(void *ignore,
+			  struct task_struct *wq_thread,
 			  struct work_struct *work)
 {
 	int cpu = cpumask_first(&wq_thread->cpus_allowed);
@@ -90,7 +92,8 @@
 }
 
 /* Creation of a cpu workqueue thread */
-static void probe_workqueue_creation(struct task_struct *wq_thread, int cpu)
+static void probe_workqueue_creation(void *ignore,
+				     struct task_struct *wq_thread, int cpu)
 {
 	struct cpu_workqueue_stats *cws;
 	unsigned long flags;
@@ -114,7 +117,8 @@
 }
 
 /* Destruction of a cpu workqueue thread */
-static void probe_workqueue_destruction(struct task_struct *wq_thread)
+static void
+probe_workqueue_destruction(void *ignore, struct task_struct *wq_thread)
 {
 	/* Workqueue only execute on one cpu */
 	int cpu = cpumask_first(&wq_thread->cpus_allowed);
@@ -259,19 +263,19 @@
 {
 	int ret, cpu;
 
-	ret = register_trace_workqueue_insertion(probe_workqueue_insertion);
+	ret = register_trace_workqueue_insertion(probe_workqueue_insertion, NULL);
 	if (ret)
 		goto out;
 
-	ret = register_trace_workqueue_execution(probe_workqueue_execution);
+	ret = register_trace_workqueue_execution(probe_workqueue_execution, NULL);
 	if (ret)
 		goto no_insertion;
 
-	ret = register_trace_workqueue_creation(probe_workqueue_creation);
+	ret = register_trace_workqueue_creation(probe_workqueue_creation, NULL);
 	if (ret)
 		goto no_execution;
 
-	ret = register_trace_workqueue_destruction(probe_workqueue_destruction);
+	ret = register_trace_workqueue_destruction(probe_workqueue_destruction, NULL);
 	if (ret)
 		goto no_creation;
 
@@ -283,11 +287,11 @@
 	return 0;
 
 no_creation:
-	unregister_trace_workqueue_creation(probe_workqueue_creation);
+	unregister_trace_workqueue_creation(probe_workqueue_creation, NULL);
 no_execution:
-	unregister_trace_workqueue_execution(probe_workqueue_execution);
+	unregister_trace_workqueue_execution(probe_workqueue_execution, NULL);
 no_insertion:
-	unregister_trace_workqueue_insertion(probe_workqueue_insertion);
+	unregister_trace_workqueue_insertion(probe_workqueue_insertion, NULL);
 out:
 	pr_warning("trace_workqueue: unable to trace workqueues\n");
 
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index cc89be5..c77f3ec 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -54,7 +54,7 @@
  */
 struct tracepoint_entry {
 	struct hlist_node hlist;
-	void **funcs;
+	struct tracepoint_func *funcs;
 	int refcount;	/* Number of times armed. 0 if disarmed. */
 	char name[0];
 };
@@ -64,12 +64,12 @@
 		struct rcu_head rcu;
 		struct list_head list;
 	} u;
-	void *probes[0];
+	struct tracepoint_func probes[0];
 };
 
 static inline void *allocate_probes(int count)
 {
-	struct tp_probes *p  = kmalloc(count * sizeof(void *)
+	struct tp_probes *p  = kmalloc(count * sizeof(struct tracepoint_func)
 			+ sizeof(struct tp_probes), GFP_KERNEL);
 	return p == NULL ? NULL : p->probes;
 }
@@ -79,7 +79,7 @@
 	kfree(container_of(head, struct tp_probes, u.rcu));
 }
 
-static inline void release_probes(void *old)
+static inline void release_probes(struct tracepoint_func *old)
 {
 	if (old) {
 		struct tp_probes *tp_probes = container_of(old,
@@ -95,15 +95,16 @@
 	if (!tracepoint_debug || !entry->funcs)
 		return;
 
-	for (i = 0; entry->funcs[i]; i++)
-		printk(KERN_DEBUG "Probe %d : %p\n", i, entry->funcs[i]);
+	for (i = 0; entry->funcs[i].func; i++)
+		printk(KERN_DEBUG "Probe %d : %p\n", i, entry->funcs[i].func);
 }
 
-static void *
-tracepoint_entry_add_probe(struct tracepoint_entry *entry, void *probe)
+static struct tracepoint_func *
+tracepoint_entry_add_probe(struct tracepoint_entry *entry,
+			   void *probe, void *data)
 {
 	int nr_probes = 0;
-	void **old, **new;
+	struct tracepoint_func *old, *new;
 
 	WARN_ON(!probe);
 
@@ -111,8 +112,9 @@
 	old = entry->funcs;
 	if (old) {
 		/* (N -> N+1), (N != 0, 1) probes */
-		for (nr_probes = 0; old[nr_probes]; nr_probes++)
-			if (old[nr_probes] == probe)
+		for (nr_probes = 0; old[nr_probes].func; nr_probes++)
+			if (old[nr_probes].func == probe &&
+			    old[nr_probes].data == data)
 				return ERR_PTR(-EEXIST);
 	}
 	/* + 2 : one for new probe, one for NULL func */
@@ -120,9 +122,10 @@
 	if (new == NULL)
 		return ERR_PTR(-ENOMEM);
 	if (old)
-		memcpy(new, old, nr_probes * sizeof(void *));
-	new[nr_probes] = probe;
-	new[nr_probes + 1] = NULL;
+		memcpy(new, old, nr_probes * sizeof(struct tracepoint_func));
+	new[nr_probes].func = probe;
+	new[nr_probes].data = data;
+	new[nr_probes + 1].func = NULL;
 	entry->refcount = nr_probes + 1;
 	entry->funcs = new;
 	debug_print_probes(entry);
@@ -130,10 +133,11 @@
 }
 
 static void *
-tracepoint_entry_remove_probe(struct tracepoint_entry *entry, void *probe)
+tracepoint_entry_remove_probe(struct tracepoint_entry *entry,
+			      void *probe, void *data)
 {
 	int nr_probes = 0, nr_del = 0, i;
-	void **old, **new;
+	struct tracepoint_func *old, *new;
 
 	old = entry->funcs;
 
@@ -142,8 +146,10 @@
 
 	debug_print_probes(entry);
 	/* (N -> M), (N > 1, M >= 0) probes */
-	for (nr_probes = 0; old[nr_probes]; nr_probes++) {
-		if ((!probe || old[nr_probes] == probe))
+	for (nr_probes = 0; old[nr_probes].func; nr_probes++) {
+		if (!probe ||
+		    (old[nr_probes].func == probe &&
+		     old[nr_probes].data == data))
 			nr_del++;
 	}
 
@@ -160,10 +166,11 @@
 		new = allocate_probes(nr_probes - nr_del + 1);
 		if (new == NULL)
 			return ERR_PTR(-ENOMEM);
-		for (i = 0; old[i]; i++)
-			if ((probe && old[i] != probe))
+		for (i = 0; old[i].func; i++)
+			if (probe &&
+			    (old[i].func != probe || old[i].data != data))
 				new[j++] = old[i];
-		new[nr_probes - nr_del] = NULL;
+		new[nr_probes - nr_del].func = NULL;
 		entry->refcount = nr_probes - nr_del;
 		entry->funcs = new;
 	}
@@ -315,18 +322,19 @@
 	module_update_tracepoints();
 }
 
-static void *tracepoint_add_probe(const char *name, void *probe)
+static struct tracepoint_func *
+tracepoint_add_probe(const char *name, void *probe, void *data)
 {
 	struct tracepoint_entry *entry;
-	void *old;
+	struct tracepoint_func *old;
 
 	entry = get_tracepoint(name);
 	if (!entry) {
 		entry = add_tracepoint(name);
 		if (IS_ERR(entry))
-			return entry;
+			return (struct tracepoint_func *)entry;
 	}
-	old = tracepoint_entry_add_probe(entry, probe);
+	old = tracepoint_entry_add_probe(entry, probe, data);
 	if (IS_ERR(old) && !entry->refcount)
 		remove_tracepoint(entry);
 	return old;
@@ -340,12 +348,12 @@
  * Returns 0 if ok, error value on error.
  * The probe address must at least be aligned on the architecture pointer size.
  */
-int tracepoint_probe_register(const char *name, void *probe)
+int tracepoint_probe_register(const char *name, void *probe, void *data)
 {
-	void *old;
+	struct tracepoint_func *old;
 
 	mutex_lock(&tracepoints_mutex);
-	old = tracepoint_add_probe(name, probe);
+	old = tracepoint_add_probe(name, probe, data);
 	mutex_unlock(&tracepoints_mutex);
 	if (IS_ERR(old))
 		return PTR_ERR(old);
@@ -356,15 +364,16 @@
 }
 EXPORT_SYMBOL_GPL(tracepoint_probe_register);
 
-static void *tracepoint_remove_probe(const char *name, void *probe)
+static struct tracepoint_func *
+tracepoint_remove_probe(const char *name, void *probe, void *data)
 {
 	struct tracepoint_entry *entry;
-	void *old;
+	struct tracepoint_func *old;
 
 	entry = get_tracepoint(name);
 	if (!entry)
 		return ERR_PTR(-ENOENT);
-	old = tracepoint_entry_remove_probe(entry, probe);
+	old = tracepoint_entry_remove_probe(entry, probe, data);
 	if (IS_ERR(old))
 		return old;
 	if (!entry->refcount)
@@ -382,12 +391,12 @@
  * itself uses stop_machine(), which insures that every preempt disabled section
  * have finished.
  */
-int tracepoint_probe_unregister(const char *name, void *probe)
+int tracepoint_probe_unregister(const char *name, void *probe, void *data)
 {
-	void *old;
+	struct tracepoint_func *old;
 
 	mutex_lock(&tracepoints_mutex);
-	old = tracepoint_remove_probe(name, probe);
+	old = tracepoint_remove_probe(name, probe, data);
 	mutex_unlock(&tracepoints_mutex);
 	if (IS_ERR(old))
 		return PTR_ERR(old);
@@ -418,12 +427,13 @@
  *
  * caller must call tracepoint_probe_update_all()
  */
-int tracepoint_probe_register_noupdate(const char *name, void *probe)
+int tracepoint_probe_register_noupdate(const char *name, void *probe,
+				       void *data)
 {
-	void *old;
+	struct tracepoint_func *old;
 
 	mutex_lock(&tracepoints_mutex);
-	old = tracepoint_add_probe(name, probe);
+	old = tracepoint_add_probe(name, probe, data);
 	if (IS_ERR(old)) {
 		mutex_unlock(&tracepoints_mutex);
 		return PTR_ERR(old);
@@ -441,12 +451,13 @@
  *
  * caller must call tracepoint_probe_update_all()
  */
-int tracepoint_probe_unregister_noupdate(const char *name, void *probe)
+int tracepoint_probe_unregister_noupdate(const char *name, void *probe,
+					 void *data)
 {
-	void *old;
+	struct tracepoint_func *old;
 
 	mutex_lock(&tracepoints_mutex);
-	old = tracepoint_remove_probe(name, probe);
+	old = tracepoint_remove_probe(name, probe, data);
 	if (IS_ERR(old)) {
 		mutex_unlock(&tracepoints_mutex);
 		return PTR_ERR(old);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 77dabbf..327d2de 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1110,7 +1110,7 @@
 	unsigned int cpu = (unsigned long)hcpu;
 	struct cpu_workqueue_struct *cwq;
 	struct workqueue_struct *wq;
-	int ret = NOTIFY_OK;
+	int err = 0;
 
 	action &= ~CPU_TASKS_FROZEN;
 
@@ -1124,12 +1124,13 @@
 
 		switch (action) {
 		case CPU_UP_PREPARE:
-			if (!create_workqueue_thread(cwq, cpu))
+			err = create_workqueue_thread(cwq, cpu);
+			if (!err)
 				break;
 			printk(KERN_ERR "workqueue [%s] for %i failed\n",
 				wq->name, cpu);
 			action = CPU_UP_CANCELED;
-			ret = NOTIFY_BAD;
+			err = -ENOMEM;
 			goto undo;
 
 		case CPU_ONLINE:
@@ -1150,7 +1151,7 @@
 		cpumask_clear_cpu(cpu, cpu_populated_map);
 	}
 
-	return ret;
+	return notifier_from_errno(err);
 }
 
 #ifdef CONFIG_SMP
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 2312089..e722e9d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -898,6 +898,18 @@
 	Documentation on how to use the module can be found in
 	Documentation/fault-injection/provoke-crashes.txt
 
+config CPU_NOTIFIER_ERROR_INJECT
+	tristate "CPU notifier error injection module"
+	depends on HOTPLUG_CPU && DEBUG_KERNEL
+	help
+	  This option provides a kernel module that can be used to test
+	  the error handling of the cpu notifiers
+
+	  To compile this code as a module, choose M here: the module will
+	  be called cpu-notifier-error-inject.
+
+	  If unsure, say N.
+
 config FAULT_INJECTION
 	bool "Fault-injection framework"
 	depends on DEBUG_KERNEL
diff --git a/lib/Makefile b/lib/Makefile
index 9e6d3c2..3f1062c 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -21,7 +21,7 @@
 
 obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
 	 bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \
-	 string_helpers.o gcd.o lcm.o list_sort.o
+	 string_helpers.o gcd.o lcm.o list_sort.o uuid.o
 
 ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 CFLAGS_kobject.o += -DDEBUG
@@ -85,6 +85,7 @@
 obj-$(CONFIG_SWIOTLB) += swiotlb.o
 obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o
 obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
+obj-$(CONFIG_CPU_NOTIFIER_ERROR_INJECT) += cpu-notifier-error-inject.o
 
 lib-$(CONFIG_GENERIC_BUG) += bug.o
 
diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 65e482c..9087d71 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -9,6 +9,7 @@
  * (at your option) any later version.
  */
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <asm/atomic.h>
 
 #define INIT(c) do { atomic64_set(&v, c); r = c; } while (0)
diff --git a/lib/cpu-notifier-error-inject.c b/lib/cpu-notifier-error-inject.c
new file mode 100644
index 0000000..4dc2032
--- /dev/null
+++ b/lib/cpu-notifier-error-inject.c
@@ -0,0 +1,63 @@
+#include <linux/kernel.h>
+#include <linux/cpu.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+
+static int priority;
+static int cpu_up_prepare_error;
+static int cpu_down_prepare_error;
+
+module_param(priority, int, 0);
+MODULE_PARM_DESC(priority, "specify cpu notifier priority");
+
+module_param(cpu_up_prepare_error, int, 0644);
+MODULE_PARM_DESC(cpu_up_prepare_error,
+		"specify error code to inject CPU_UP_PREPARE action");
+
+module_param(cpu_down_prepare_error, int, 0644);
+MODULE_PARM_DESC(cpu_down_prepare_error,
+		"specify error code to inject CPU_DOWN_PREPARE action");
+
+static int err_inject_cpu_callback(struct notifier_block *nfb,
+				unsigned long action, void *hcpu)
+{
+	int err = 0;
+
+	switch (action) {
+	case CPU_UP_PREPARE:
+	case CPU_UP_PREPARE_FROZEN:
+		err = cpu_up_prepare_error;
+		break;
+	case CPU_DOWN_PREPARE:
+	case CPU_DOWN_PREPARE_FROZEN:
+		err = cpu_down_prepare_error;
+		break;
+	}
+	if (err)
+		printk(KERN_INFO "Injecting error (%d) at cpu notifier\n", err);
+
+	return notifier_from_errno(err);
+}
+
+static struct notifier_block err_inject_cpu_notifier = {
+	.notifier_call = err_inject_cpu_callback,
+};
+
+static int err_inject_init(void)
+{
+	err_inject_cpu_notifier.priority = priority;
+
+	return register_hotcpu_notifier(&err_inject_cpu_notifier);
+}
+
+static void err_inject_exit(void)
+{
+	unregister_hotcpu_notifier(&err_inject_cpu_notifier);
+}
+
+module_init(err_inject_init);
+module_exit(err_inject_exit);
+
+MODULE_DESCRIPTION("CPU notifier error injection module");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
diff --git a/lib/crc32.c b/lib/crc32.c
index 3087ed8..4855995 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -50,7 +50,7 @@
 static inline u32
 crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
 {
-# if __BYTE_ORDER == __LITTLE_ENDIAN
+# ifdef __LITTLE_ENDIAN
 #  define DO_CRC(x) crc = tab[0][(crc ^ (x)) & 255] ^ (crc >> 8)
 #  define DO_CRC4 crc = tab[3][(crc) & 255] ^ \
 		tab[2][(crc >> 8) & 255] ^ \
diff --git a/lib/idr.c b/lib/idr.c
index 422a9d5..c1a2069 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -445,6 +445,7 @@
 void idr_remove_all(struct idr *idp)
 {
 	int n, id, max;
+	int bt_mask;
 	struct idr_layer *p;
 	struct idr_layer *pa[MAX_LEVEL];
 	struct idr_layer **paa = &pa[0];
@@ -462,8 +463,10 @@
 			p = p->ary[(id >> n) & IDR_MASK];
 		}
 
+		bt_mask = id;
 		id += 1 << n;
-		while (n < fls(id)) {
+		/* Get the highest bit that the above add changed from 0->1. */
+		while (n < fls(id ^ bt_mask)) {
 			if (p)
 				free_layer(p);
 			n += IDR_BITS;
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 2a087e0..05da38b 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -656,7 +656,7 @@
  *
  *	Returns: the index of the hole if found, otherwise returns an index
  *	outside of the set specified (in which case 'index - return >= max_scan'
- *	will be true). In rare cases of wrap-around, LONG_MAX will be returned.
+ *	will be true). In rare cases of wrap-around, ULONG_MAX will be returned.
  *
  *	radix_tree_next_hole may be called under rcu_read_lock. However, like
  *	radix_tree_gang_lookup, this will not atomically search a snapshot of
@@ -674,7 +674,7 @@
 		if (!radix_tree_lookup(root, index))
 			break;
 		index--;
-		if (index == LONG_MAX)
+		if (index == ULONG_MAX)
 			break;
 	}
 
diff --git a/lib/random32.c b/lib/random32.c
index 217d5c4..870dc3f 100644
--- a/lib/random32.c
+++ b/lib/random32.c
@@ -39,13 +39,16 @@
 #include <linux/jiffies.h>
 #include <linux/random.h>
 
-struct rnd_state {
-	u32 s1, s2, s3;
-};
-
 static DEFINE_PER_CPU(struct rnd_state, net_rand_state);
 
-static u32 __random32(struct rnd_state *state)
+/**
+ *	prandom32 - seeded pseudo-random number generator.
+ *	@state: pointer to state structure holding seeded state.
+ *
+ *	This is used for pseudo-randomness with no outside seeding.
+ *	For more random results, use random32().
+ */
+u32 prandom32(struct rnd_state *state)
 {
 #define TAUSWORTHE(s,a,b,c,d) ((s&c)<<d) ^ (((s <<a) ^ s)>>b)
 
@@ -55,14 +58,7 @@
 
 	return (state->s1 ^ state->s2 ^ state->s3);
 }
-
-/*
- * Handle minimum values for seeds
- */
-static inline u32 __seed(u32 x, u32 m)
-{
-	return (x < m) ? x + m : x;
-}
+EXPORT_SYMBOL(prandom32);
 
 /**
  *	random32 - pseudo random number generator
@@ -75,7 +71,7 @@
 {
 	unsigned long r;
 	struct rnd_state *state = &get_cpu_var(net_rand_state);
-	r = __random32(state);
+	r = prandom32(state);
 	put_cpu_var(state);
 	return r;
 }
@@ -118,12 +114,12 @@
 		state->s3 = __seed(LCG(state->s2), 15);
 
 		/* "warm it up" */
-		__random32(state);
-		__random32(state);
-		__random32(state);
-		__random32(state);
-		__random32(state);
-		__random32(state);
+		prandom32(state);
+		prandom32(state);
+		prandom32(state);
+		prandom32(state);
+		prandom32(state);
+		prandom32(state);
 	}
 	return 0;
 }
@@ -147,7 +143,7 @@
 		state->s3 = __seed(seeds[2], 15);
 
 		/* mix it in */
-		__random32(state);
+		prandom32(state);
 	}
 	return 0;
 }
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 5fddf72..a009055 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -757,37 +757,6 @@
 EXPORT_SYMBOL(swiotlb_sync_single_for_device);
 
 /*
- * Same as above, but for a sub-range of the mapping.
- */
-static void
-swiotlb_sync_single_range(struct device *hwdev, dma_addr_t dev_addr,
-			  unsigned long offset, size_t size,
-			  int dir, int target)
-{
-	swiotlb_sync_single(hwdev, dev_addr + offset, size, dir, target);
-}
-
-void
-swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
-				  unsigned long offset, size_t size,
-				  enum dma_data_direction dir)
-{
-	swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
-				  SYNC_FOR_CPU);
-}
-EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_cpu);
-
-void
-swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
-				     unsigned long offset, size_t size,
-				     enum dma_data_direction dir)
-{
-	swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
-				  SYNC_FOR_DEVICE);
-}
-EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_device);
-
-/*
  * Map a set of buffers described by scatterlist in streaming mode for DMA.
  * This is the scatter-gather version of the above swiotlb_map_page
  * interface.  Here the scatter gather list elements are each tagged with the
diff --git a/lib/uuid.c b/lib/uuid.c
new file mode 100644
index 0000000..8fadd7c
--- /dev/null
+++ b/lib/uuid.c
@@ -0,0 +1,53 @@
+/*
+ * Unified UUID/GUID definition
+ *
+ * Copyright (C) 2009, Intel Corp.
+ *	Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/uuid.h>
+#include <linux/random.h>
+
+static void __uuid_gen_common(__u8 b[16])
+{
+	int i;
+	u32 r;
+
+	for (i = 0; i < 4; i++) {
+		r = random32();
+		memcpy(b + i * 4, &r, 4);
+	}
+	/* reversion 0b10 */
+	b[8] = (b[8] & 0x3F) | 0x80;
+}
+
+void uuid_le_gen(uuid_le *lu)
+{
+	__uuid_gen_common(lu->b);
+	/* version 4 : random generation */
+	lu->b[7] = (lu->b[7] & 0x0F) | 0x40;
+}
+EXPORT_SYMBOL_GPL(uuid_le_gen);
+
+void uuid_be_gen(uuid_be *bu)
+{
+	__uuid_gen_common(bu->b);
+	/* version 4 : random generation */
+	bu->b[6] = (bu->b[6] & 0x0F) | 0x40;
+}
+EXPORT_SYMBOL_GPL(uuid_be_gen);
diff --git a/mm/filemap.c b/mm/filemap.c
index 88d7196..45a2d18 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1105,6 +1105,12 @@
 		}
 
 readpage:
+		/*
+		 * A previous I/O error may have been due to temporary
+		 * failures, eg. multipath errors.
+		 * PG_error will be set again if readpage fails.
+		 */
+		ClearPageError(page);
 		/* Start the actual read. The read will unlock the page. */
 		error = mapping->a_ops->readpage(filp, page);
 
@@ -1269,7 +1275,7 @@
 {
 	struct file *filp = iocb->ki_filp;
 	ssize_t retval;
-	unsigned long seg;
+	unsigned long seg = 0;
 	size_t count;
 	loff_t *ppos = &iocb->ki_pos;
 
@@ -1296,21 +1302,47 @@
 				retval = mapping->a_ops->direct_IO(READ, iocb,
 							iov, pos, nr_segs);
 			}
-			if (retval > 0)
+			if (retval > 0) {
 				*ppos = pos + retval;
-			if (retval) {
+				count -= retval;
+			}
+
+			/*
+			 * Btrfs can have a short DIO read if we encounter
+			 * compressed extents, so if there was an error, or if
+			 * we've already read everything we wanted to, or if
+			 * there was a short read because we hit EOF, go ahead
+			 * and return.  Otherwise fallthrough to buffered io for
+			 * the rest of the read.
+			 */
+			if (retval < 0 || !count || *ppos >= size) {
 				file_accessed(filp);
 				goto out;
 			}
 		}
 	}
 
+	count = retval;
 	for (seg = 0; seg < nr_segs; seg++) {
 		read_descriptor_t desc;
+		loff_t offset = 0;
+
+		/*
+		 * If we did a short DIO read we need to skip the section of the
+		 * iov that we've already read data into.
+		 */
+		if (count) {
+			if (count > iov[seg].iov_len) {
+				count -= iov[seg].iov_len;
+				continue;
+			}
+			offset = count;
+			count = 0;
+		}
 
 		desc.written = 0;
-		desc.arg.buf = iov[seg].iov_base;
-		desc.count = iov[seg].iov_len;
+		desc.arg.buf = iov[seg].iov_base + offset;
+		desc.count = iov[seg].iov_len - offset;
 		if (desc.count == 0)
 			continue;
 		desc.error = 0;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c8569bc..c6ece0a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -149,16 +149,35 @@
 	u64 threshold;
 };
 
+/* For threshold */
 struct mem_cgroup_threshold_ary {
 	/* An array index points to threshold just below usage. */
-	atomic_t current_threshold;
+	int current_threshold;
 	/* Size of entries[] */
 	unsigned int size;
 	/* Array of thresholds */
 	struct mem_cgroup_threshold entries[0];
 };
 
+struct mem_cgroup_thresholds {
+	/* Primary thresholds array */
+	struct mem_cgroup_threshold_ary *primary;
+	/*
+	 * Spare threshold array.
+	 * This is needed to make mem_cgroup_unregister_event() "never fail".
+	 * It must be able to store at least primary->size - 1 entries.
+	 */
+	struct mem_cgroup_threshold_ary *spare;
+};
+
+/* for OOM */
+struct mem_cgroup_eventfd_list {
+	struct list_head list;
+	struct eventfd_ctx *eventfd;
+};
+
 static void mem_cgroup_threshold(struct mem_cgroup *mem);
+static void mem_cgroup_oom_notify(struct mem_cgroup *mem);
 
 /*
  * The memory controller data structure. The memory controller controls both
@@ -207,6 +226,8 @@
 	atomic_t	refcnt;
 
 	unsigned int	swappiness;
+	/* OOM-Killer disable */
+	int		oom_kill_disable;
 
 	/* set when res.limit == memsw.limit */
 	bool		memsw_is_minimum;
@@ -215,17 +236,19 @@
 	struct mutex thresholds_lock;
 
 	/* thresholds for memory usage. RCU-protected */
-	struct mem_cgroup_threshold_ary *thresholds;
+	struct mem_cgroup_thresholds thresholds;
 
 	/* thresholds for mem+swap usage. RCU-protected */
-	struct mem_cgroup_threshold_ary *memsw_thresholds;
+	struct mem_cgroup_thresholds memsw_thresholds;
+
+	/* For oom notifier event fd */
+	struct list_head oom_notify;
 
 	/*
 	 * Should we move charges of a task when a task is moved into this
 	 * mem_cgroup ? And what type of charges should we move ?
 	 */
 	unsigned long 	move_charge_at_immigrate;
-
 	/*
 	 * percpu counter.
 	 */
@@ -239,6 +262,7 @@
  */
 enum move_type {
 	MOVE_CHARGE_TYPE_ANON,	/* private anonymous page and swap of it */
+	MOVE_CHARGE_TYPE_FILE,	/* file page(including tmpfs) and swap of it */
 	NR_MOVE_TYPE,
 };
 
@@ -255,6 +279,18 @@
 	.waitq = __WAIT_QUEUE_HEAD_INITIALIZER(mc.waitq),
 };
 
+static bool move_anon(void)
+{
+	return test_bit(MOVE_CHARGE_TYPE_ANON,
+					&mc.to->move_charge_at_immigrate);
+}
+
+static bool move_file(void)
+{
+	return test_bit(MOVE_CHARGE_TYPE_FILE,
+					&mc.to->move_charge_at_immigrate);
+}
+
 /*
  * Maximum loops in mem_cgroup_hierarchical_reclaim(), used for soft
  * limit reclaim to prevent infinite loops, if they ever occur.
@@ -282,9 +318,12 @@
 /* for encoding cft->private value on file */
 #define _MEM			(0)
 #define _MEMSWAP		(1)
+#define _OOM_TYPE		(2)
 #define MEMFILE_PRIVATE(x, val)	(((x) << 16) | (val))
 #define MEMFILE_TYPE(val)	(((val) >> 16) & 0xffff)
 #define MEMFILE_ATTR(val)	((val) & 0xffff)
+/* Used for OOM nofiier */
+#define OOM_CONTROL		(0)
 
 /*
  * Reclaim flags for mem_cgroup_hierarchical_reclaim
@@ -1293,14 +1332,62 @@
 static DEFINE_MUTEX(memcg_oom_mutex);
 static DECLARE_WAIT_QUEUE_HEAD(memcg_oom_waitq);
 
+struct oom_wait_info {
+	struct mem_cgroup *mem;
+	wait_queue_t	wait;
+};
+
+static int memcg_oom_wake_function(wait_queue_t *wait,
+	unsigned mode, int sync, void *arg)
+{
+	struct mem_cgroup *wake_mem = (struct mem_cgroup *)arg;
+	struct oom_wait_info *oom_wait_info;
+
+	oom_wait_info = container_of(wait, struct oom_wait_info, wait);
+
+	if (oom_wait_info->mem == wake_mem)
+		goto wakeup;
+	/* if no hierarchy, no match */
+	if (!oom_wait_info->mem->use_hierarchy || !wake_mem->use_hierarchy)
+		return 0;
+	/*
+	 * Both of oom_wait_info->mem and wake_mem are stable under us.
+	 * Then we can use css_is_ancestor without taking care of RCU.
+	 */
+	if (!css_is_ancestor(&oom_wait_info->mem->css, &wake_mem->css) &&
+	    !css_is_ancestor(&wake_mem->css, &oom_wait_info->mem->css))
+		return 0;
+
+wakeup:
+	return autoremove_wake_function(wait, mode, sync, arg);
+}
+
+static void memcg_wakeup_oom(struct mem_cgroup *mem)
+{
+	/* for filtering, pass "mem" as argument. */
+	__wake_up(&memcg_oom_waitq, TASK_NORMAL, 0, mem);
+}
+
+static void memcg_oom_recover(struct mem_cgroup *mem)
+{
+	if (mem->oom_kill_disable && atomic_read(&mem->oom_lock))
+		memcg_wakeup_oom(mem);
+}
+
 /*
  * try to call OOM killer. returns false if we should exit memory-reclaim loop.
  */
 bool mem_cgroup_handle_oom(struct mem_cgroup *mem, gfp_t mask)
 {
-	DEFINE_WAIT(wait);
-	bool locked;
+	struct oom_wait_info owait;
+	bool locked, need_to_kill;
 
+	owait.mem = mem;
+	owait.wait.flags = 0;
+	owait.wait.func = memcg_oom_wake_function;
+	owait.wait.private = current;
+	INIT_LIST_HEAD(&owait.wait.task_list);
+	need_to_kill = true;
 	/* At first, try to OOM lock hierarchy under mem.*/
 	mutex_lock(&memcg_oom_mutex);
 	locked = mem_cgroup_oom_lock(mem);
@@ -1309,32 +1396,23 @@
 	 * accounting. So, UNINTERRUPTIBLE is appropriate. But SIGKILL
 	 * under OOM is always welcomed, use TASK_KILLABLE here.
 	 */
-	if (!locked)
-		prepare_to_wait(&memcg_oom_waitq, &wait, TASK_KILLABLE);
+	prepare_to_wait(&memcg_oom_waitq, &owait.wait, TASK_KILLABLE);
+	if (!locked || mem->oom_kill_disable)
+		need_to_kill = false;
+	if (locked)
+		mem_cgroup_oom_notify(mem);
 	mutex_unlock(&memcg_oom_mutex);
 
-	if (locked)
+	if (need_to_kill) {
+		finish_wait(&memcg_oom_waitq, &owait.wait);
 		mem_cgroup_out_of_memory(mem, mask);
-	else {
+	} else {
 		schedule();
-		finish_wait(&memcg_oom_waitq, &wait);
+		finish_wait(&memcg_oom_waitq, &owait.wait);
 	}
 	mutex_lock(&memcg_oom_mutex);
 	mem_cgroup_oom_unlock(mem);
-	/*
-	 * Here, we use global waitq .....more fine grained waitq ?
-	 * Assume following hierarchy.
-	 * A/
-	 *   01
-	 *   02
-	 * assume OOM happens both in A and 01 at the same time. Tthey are
-	 * mutually exclusive by lock. (kill in 01 helps A.)
-	 * When we use per memcg waitq, we have to wake up waiters on A and 02
-	 * in addtion to waiters on 01. We use global waitq for avoiding mess.
-	 * It will not be a big problem.
-	 * (And a task may be moved to other groups while it's waiting for OOM.)
-	 */
-	wake_up_all(&memcg_oom_waitq);
+	memcg_wakeup_oom(mem);
 	mutex_unlock(&memcg_oom_mutex);
 
 	if (test_thread_flag(TIF_MEMDIE) || fatal_signal_pending(current))
@@ -2118,15 +2196,6 @@
 	/* If swapout, usage of swap doesn't decrease */
 	if (!do_swap_account || ctype == MEM_CGROUP_CHARGE_TYPE_SWAPOUT)
 		uncharge_memsw = false;
-	/*
-	 * do_batch > 0 when unmapping pages or inode invalidate/truncate.
-	 * In those cases, all pages freed continously can be expected to be in
-	 * the same cgroup and we have chance to coalesce uncharges.
-	 * But we do uncharge one by one if this is killed by OOM(TIF_MEMDIE)
-	 * because we want to do uncharge as soon as possible.
-	 */
-	if (!current->memcg_batch.do_batch || test_thread_flag(TIF_MEMDIE))
-		goto direct_uncharge;
 
 	batch = &current->memcg_batch;
 	/*
@@ -2137,6 +2206,17 @@
 	if (!batch->memcg)
 		batch->memcg = mem;
 	/*
+	 * do_batch > 0 when unmapping pages or inode invalidate/truncate.
+	 * In those cases, all pages freed continously can be expected to be in
+	 * the same cgroup and we have chance to coalesce uncharges.
+	 * But we do uncharge one by one if this is killed by OOM(TIF_MEMDIE)
+	 * because we want to do uncharge as soon as possible.
+	 */
+
+	if (!batch->do_batch || test_thread_flag(TIF_MEMDIE))
+		goto direct_uncharge;
+
+	/*
 	 * In typical case, batch->memcg == mem. This means we can
 	 * merge a series of uncharges to an uncharge of res_counter.
 	 * If not, we uncharge res_counter ony by one.
@@ -2152,6 +2232,8 @@
 	res_counter_uncharge(&mem->res, PAGE_SIZE);
 	if (uncharge_memsw)
 		res_counter_uncharge(&mem->memsw, PAGE_SIZE);
+	if (unlikely(batch->memcg != mem))
+		memcg_oom_recover(mem);
 	return;
 }
 
@@ -2188,7 +2270,8 @@
 	switch (ctype) {
 	case MEM_CGROUP_CHARGE_TYPE_MAPPED:
 	case MEM_CGROUP_CHARGE_TYPE_DROP:
-		if (page_mapped(page))
+		/* See mem_cgroup_prepare_migration() */
+		if (page_mapped(page) || PageCgroupMigration(pc))
 			goto unlock_out;
 		break;
 	case MEM_CGROUP_CHARGE_TYPE_SWAPOUT:
@@ -2288,6 +2371,7 @@
 		res_counter_uncharge(&batch->memcg->res, batch->bytes);
 	if (batch->memsw_bytes)
 		res_counter_uncharge(&batch->memcg->memsw, batch->memsw_bytes);
+	memcg_oom_recover(batch->memcg);
 	/* forget this pointer (for sanity check) */
 	batch->memcg = NULL;
 }
@@ -2410,10 +2494,12 @@
  * Before starting migration, account PAGE_SIZE to mem_cgroup that the old
  * page belongs to.
  */
-int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr)
+int mem_cgroup_prepare_migration(struct page *page,
+	struct page *newpage, struct mem_cgroup **ptr)
 {
 	struct page_cgroup *pc;
 	struct mem_cgroup *mem = NULL;
+	enum charge_type ctype;
 	int ret = 0;
 
 	if (mem_cgroup_disabled())
@@ -2424,69 +2510,125 @@
 	if (PageCgroupUsed(pc)) {
 		mem = pc->mem_cgroup;
 		css_get(&mem->css);
+		/*
+		 * At migrating an anonymous page, its mapcount goes down
+		 * to 0 and uncharge() will be called. But, even if it's fully
+		 * unmapped, migration may fail and this page has to be
+		 * charged again. We set MIGRATION flag here and delay uncharge
+		 * until end_migration() is called
+		 *
+		 * Corner Case Thinking
+		 * A)
+		 * When the old page was mapped as Anon and it's unmap-and-freed
+		 * while migration was ongoing.
+		 * If unmap finds the old page, uncharge() of it will be delayed
+		 * until end_migration(). If unmap finds a new page, it's
+		 * uncharged when it make mapcount to be 1->0. If unmap code
+		 * finds swap_migration_entry, the new page will not be mapped
+		 * and end_migration() will find it(mapcount==0).
+		 *
+		 * B)
+		 * When the old page was mapped but migraion fails, the kernel
+		 * remaps it. A charge for it is kept by MIGRATION flag even
+		 * if mapcount goes down to 0. We can do remap successfully
+		 * without charging it again.
+		 *
+		 * C)
+		 * The "old" page is under lock_page() until the end of
+		 * migration, so, the old page itself will not be swapped-out.
+		 * If the new page is swapped out before end_migraton, our
+		 * hook to usual swap-out path will catch the event.
+		 */
+		if (PageAnon(page))
+			SetPageCgroupMigration(pc);
 	}
 	unlock_page_cgroup(pc);
+	/*
+	 * If the page is not charged at this point,
+	 * we return here.
+	 */
+	if (!mem)
+		return 0;
 
 	*ptr = mem;
-	if (mem) {
-		ret = __mem_cgroup_try_charge(NULL, GFP_KERNEL, ptr, false);
-		css_put(&mem->css);
+	ret = __mem_cgroup_try_charge(NULL, GFP_KERNEL, ptr, false);
+	css_put(&mem->css);/* drop extra refcnt */
+	if (ret || *ptr == NULL) {
+		if (PageAnon(page)) {
+			lock_page_cgroup(pc);
+			ClearPageCgroupMigration(pc);
+			unlock_page_cgroup(pc);
+			/*
+			 * The old page may be fully unmapped while we kept it.
+			 */
+			mem_cgroup_uncharge_page(page);
+		}
+		return -ENOMEM;
 	}
+	/*
+	 * We charge new page before it's used/mapped. So, even if unlock_page()
+	 * is called before end_migration, we can catch all events on this new
+	 * page. In the case new page is migrated but not remapped, new page's
+	 * mapcount will be finally 0 and we call uncharge in end_migration().
+	 */
+	pc = lookup_page_cgroup(newpage);
+	if (PageAnon(page))
+		ctype = MEM_CGROUP_CHARGE_TYPE_MAPPED;
+	else if (page_is_file_cache(page))
+		ctype = MEM_CGROUP_CHARGE_TYPE_CACHE;
+	else
+		ctype = MEM_CGROUP_CHARGE_TYPE_SHMEM;
+	__mem_cgroup_commit_charge(mem, pc, ctype);
 	return ret;
 }
 
 /* remove redundant charge if migration failed*/
 void mem_cgroup_end_migration(struct mem_cgroup *mem,
-		struct page *oldpage, struct page *newpage)
+	struct page *oldpage, struct page *newpage)
 {
-	struct page *target, *unused;
+	struct page *used, *unused;
 	struct page_cgroup *pc;
-	enum charge_type ctype;
 
 	if (!mem)
 		return;
+	/* blocks rmdir() */
 	cgroup_exclude_rmdir(&mem->css);
 	/* at migration success, oldpage->mapping is NULL. */
 	if (oldpage->mapping) {
-		target = oldpage;
-		unused = NULL;
+		used = oldpage;
+		unused = newpage;
 	} else {
-		target = newpage;
+		used = newpage;
 		unused = oldpage;
 	}
-
-	if (PageAnon(target))
-		ctype = MEM_CGROUP_CHARGE_TYPE_MAPPED;
-	else if (page_is_file_cache(target))
-		ctype = MEM_CGROUP_CHARGE_TYPE_CACHE;
-	else
-		ctype = MEM_CGROUP_CHARGE_TYPE_SHMEM;
-
-	/* unused page is not on radix-tree now. */
-	if (unused)
-		__mem_cgroup_uncharge_common(unused, ctype);
-
-	pc = lookup_page_cgroup(target);
 	/*
-	 * __mem_cgroup_commit_charge() check PCG_USED bit of page_cgroup.
-	 * So, double-counting is effectively avoided.
+	 * We disallowed uncharge of pages under migration because mapcount
+	 * of the page goes down to zero, temporarly.
+	 * Clear the flag and check the page should be charged.
 	 */
-	__mem_cgroup_commit_charge(mem, pc, ctype);
+	pc = lookup_page_cgroup(oldpage);
+	lock_page_cgroup(pc);
+	ClearPageCgroupMigration(pc);
+	unlock_page_cgroup(pc);
 
+	if (unused != oldpage)
+		pc = lookup_page_cgroup(unused);
+	__mem_cgroup_uncharge_common(unused, MEM_CGROUP_CHARGE_TYPE_FORCE);
+
+	pc = lookup_page_cgroup(used);
 	/*
-	 * Both of oldpage and newpage are still under lock_page().
-	 * Then, we don't have to care about race in radix-tree.
-	 * But we have to be careful that this page is unmapped or not.
-	 *
-	 * There is a case for !page_mapped(). At the start of
-	 * migration, oldpage was mapped. But now, it's zapped.
-	 * But we know *target* page is not freed/reused under us.
-	 * mem_cgroup_uncharge_page() does all necessary checks.
+	 * If a page is a file cache, radix-tree replacement is very atomic
+	 * and we can skip this check. When it was an Anon page, its mapcount
+	 * goes down to 0. But because we added MIGRATION flage, it's not
+	 * uncharged yet. There are several case but page->mapcount check
+	 * and USED bit check in mem_cgroup_uncharge_page() will do enough
+	 * check. (see prepare_charge() also)
 	 */
-	if (ctype == MEM_CGROUP_CHARGE_TYPE_MAPPED)
-		mem_cgroup_uncharge_page(target);
+	if (PageAnon(used))
+		mem_cgroup_uncharge_page(used);
 	/*
-	 * At migration, we may charge account against cgroup which has no tasks
+	 * At migration, we may charge account against cgroup which has no
+	 * tasks.
 	 * So, rmdir()->pre_destroy() can be called while we do this charge.
 	 * In that case, we need to call pre_destroy() again. check it here.
 	 */
@@ -2524,10 +2666,11 @@
 				unsigned long long val)
 {
 	int retry_count;
-	u64 memswlimit;
+	u64 memswlimit, memlimit;
 	int ret = 0;
 	int children = mem_cgroup_count_children(memcg);
 	u64 curusage, oldusage;
+	int enlarge;
 
 	/*
 	 * For keeping hierarchical_reclaim simple, how long we should retry
@@ -2538,6 +2681,7 @@
 
 	oldusage = res_counter_read_u64(&memcg->res, RES_USAGE);
 
+	enlarge = 0;
 	while (retry_count) {
 		if (signal_pending(current)) {
 			ret = -EINTR;
@@ -2555,6 +2699,11 @@
 			mutex_unlock(&set_limit_mutex);
 			break;
 		}
+
+		memlimit = res_counter_read_u64(&memcg->res, RES_LIMIT);
+		if (memlimit < val)
+			enlarge = 1;
+
 		ret = res_counter_set_limit(&memcg->res, val);
 		if (!ret) {
 			if (memswlimit == val)
@@ -2576,6 +2725,8 @@
 		else
 			oldusage = curusage;
 	}
+	if (!ret && enlarge)
+		memcg_oom_recover(memcg);
 
 	return ret;
 }
@@ -2584,9 +2735,10 @@
 					unsigned long long val)
 {
 	int retry_count;
-	u64 memlimit, oldusage, curusage;
+	u64 memlimit, memswlimit, oldusage, curusage;
 	int children = mem_cgroup_count_children(memcg);
 	int ret = -EBUSY;
+	int enlarge = 0;
 
 	/* see mem_cgroup_resize_res_limit */
  	retry_count = children * MEM_CGROUP_RECLAIM_RETRIES;
@@ -2608,6 +2760,9 @@
 			mutex_unlock(&set_limit_mutex);
 			break;
 		}
+		memswlimit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
+		if (memswlimit < val)
+			enlarge = 1;
 		ret = res_counter_set_limit(&memcg->memsw, val);
 		if (!ret) {
 			if (memlimit == val)
@@ -2630,6 +2785,8 @@
 		else
 			oldusage = curusage;
 	}
+	if (!ret && enlarge)
+		memcg_oom_recover(memcg);
 	return ret;
 }
 
@@ -2821,6 +2978,7 @@
 			if (ret)
 				break;
 		}
+		memcg_oom_recover(mem);
 		/* it seems parent cgroup doesn't have enough mem */
 		if (ret == -ENOMEM)
 			goto try_to_free;
@@ -3311,9 +3469,9 @@
 
 	rcu_read_lock();
 	if (!swap)
-		t = rcu_dereference(memcg->thresholds);
+		t = rcu_dereference(memcg->thresholds.primary);
 	else
-		t = rcu_dereference(memcg->memsw_thresholds);
+		t = rcu_dereference(memcg->memsw_thresholds.primary);
 
 	if (!t)
 		goto unlock;
@@ -3325,7 +3483,7 @@
 	 * If it's not true, a threshold was crossed after last
 	 * call of __mem_cgroup_threshold().
 	 */
-	i = atomic_read(&t->current_threshold);
+	i = t->current_threshold;
 
 	/*
 	 * Iterate backward over array of thresholds starting from
@@ -3349,7 +3507,7 @@
 		eventfd_signal(t->entries[i].eventfd, 1);
 
 	/* Update current_threshold */
-	atomic_set(&t->current_threshold, i - 1);
+	t->current_threshold = i - 1;
 unlock:
 	rcu_read_unlock();
 }
@@ -3369,106 +3527,117 @@
 	return _a->threshold - _b->threshold;
 }
 
-static int mem_cgroup_register_event(struct cgroup *cgrp, struct cftype *cft,
-		struct eventfd_ctx *eventfd, const char *args)
+static int mem_cgroup_oom_notify_cb(struct mem_cgroup *mem, void *data)
+{
+	struct mem_cgroup_eventfd_list *ev;
+
+	list_for_each_entry(ev, &mem->oom_notify, list)
+		eventfd_signal(ev->eventfd, 1);
+	return 0;
+}
+
+static void mem_cgroup_oom_notify(struct mem_cgroup *mem)
+{
+	mem_cgroup_walk_tree(mem, NULL, mem_cgroup_oom_notify_cb);
+}
+
+static int mem_cgroup_usage_register_event(struct cgroup *cgrp,
+	struct cftype *cft, struct eventfd_ctx *eventfd, const char *args)
 {
 	struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
-	struct mem_cgroup_threshold_ary *thresholds, *thresholds_new;
+	struct mem_cgroup_thresholds *thresholds;
+	struct mem_cgroup_threshold_ary *new;
 	int type = MEMFILE_TYPE(cft->private);
 	u64 threshold, usage;
-	int size;
-	int i, ret;
+	int i, size, ret;
 
 	ret = res_counter_memparse_write_strategy(args, &threshold);
 	if (ret)
 		return ret;
 
 	mutex_lock(&memcg->thresholds_lock);
+
 	if (type == _MEM)
-		thresholds = memcg->thresholds;
+		thresholds = &memcg->thresholds;
 	else if (type == _MEMSWAP)
-		thresholds = memcg->memsw_thresholds;
+		thresholds = &memcg->memsw_thresholds;
 	else
 		BUG();
 
 	usage = mem_cgroup_usage(memcg, type == _MEMSWAP);
 
 	/* Check if a threshold crossed before adding a new one */
-	if (thresholds)
+	if (thresholds->primary)
 		__mem_cgroup_threshold(memcg, type == _MEMSWAP);
 
-	if (thresholds)
-		size = thresholds->size + 1;
-	else
-		size = 1;
+	size = thresholds->primary ? thresholds->primary->size + 1 : 1;
 
 	/* Allocate memory for new array of thresholds */
-	thresholds_new = kmalloc(sizeof(*thresholds_new) +
-			size * sizeof(struct mem_cgroup_threshold),
+	new = kmalloc(sizeof(*new) + size * sizeof(struct mem_cgroup_threshold),
 			GFP_KERNEL);
-	if (!thresholds_new) {
+	if (!new) {
 		ret = -ENOMEM;
 		goto unlock;
 	}
-	thresholds_new->size = size;
+	new->size = size;
 
 	/* Copy thresholds (if any) to new array */
-	if (thresholds)
-		memcpy(thresholds_new->entries, thresholds->entries,
-				thresholds->size *
+	if (thresholds->primary) {
+		memcpy(new->entries, thresholds->primary->entries, (size - 1) *
 				sizeof(struct mem_cgroup_threshold));
+	}
+
 	/* Add new threshold */
-	thresholds_new->entries[size - 1].eventfd = eventfd;
-	thresholds_new->entries[size - 1].threshold = threshold;
+	new->entries[size - 1].eventfd = eventfd;
+	new->entries[size - 1].threshold = threshold;
 
 	/* Sort thresholds. Registering of new threshold isn't time-critical */
-	sort(thresholds_new->entries, size,
-			sizeof(struct mem_cgroup_threshold),
+	sort(new->entries, size, sizeof(struct mem_cgroup_threshold),
 			compare_thresholds, NULL);
 
 	/* Find current threshold */
-	atomic_set(&thresholds_new->current_threshold, -1);
+	new->current_threshold = -1;
 	for (i = 0; i < size; i++) {
-		if (thresholds_new->entries[i].threshold < usage) {
+		if (new->entries[i].threshold < usage) {
 			/*
-			 * thresholds_new->current_threshold will not be used
-			 * until rcu_assign_pointer(), so it's safe to increment
+			 * new->current_threshold will not be used until
+			 * rcu_assign_pointer(), so it's safe to increment
 			 * it here.
 			 */
-			atomic_inc(&thresholds_new->current_threshold);
+			++new->current_threshold;
 		}
 	}
 
-	if (type == _MEM)
-		rcu_assign_pointer(memcg->thresholds, thresholds_new);
-	else
-		rcu_assign_pointer(memcg->memsw_thresholds, thresholds_new);
+	/* Free old spare buffer and save old primary buffer as spare */
+	kfree(thresholds->spare);
+	thresholds->spare = thresholds->primary;
 
-	/* To be sure that nobody uses thresholds before freeing it */
+	rcu_assign_pointer(thresholds->primary, new);
+
+	/* To be sure that nobody uses thresholds */
 	synchronize_rcu();
 
-	kfree(thresholds);
 unlock:
 	mutex_unlock(&memcg->thresholds_lock);
 
 	return ret;
 }
 
-static int mem_cgroup_unregister_event(struct cgroup *cgrp, struct cftype *cft,
-		struct eventfd_ctx *eventfd)
+static void mem_cgroup_usage_unregister_event(struct cgroup *cgrp,
+	struct cftype *cft, struct eventfd_ctx *eventfd)
 {
 	struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
-	struct mem_cgroup_threshold_ary *thresholds, *thresholds_new;
+	struct mem_cgroup_thresholds *thresholds;
+	struct mem_cgroup_threshold_ary *new;
 	int type = MEMFILE_TYPE(cft->private);
 	u64 usage;
-	int size = 0;
-	int i, j, ret;
+	int i, j, size;
 
 	mutex_lock(&memcg->thresholds_lock);
 	if (type == _MEM)
-		thresholds = memcg->thresholds;
+		thresholds = &memcg->thresholds;
 	else if (type == _MEMSWAP)
-		thresholds = memcg->memsw_thresholds;
+		thresholds = &memcg->memsw_thresholds;
 	else
 		BUG();
 
@@ -3484,59 +3653,136 @@
 	__mem_cgroup_threshold(memcg, type == _MEMSWAP);
 
 	/* Calculate new number of threshold */
-	for (i = 0; i < thresholds->size; i++) {
-		if (thresholds->entries[i].eventfd != eventfd)
+	size = 0;
+	for (i = 0; i < thresholds->primary->size; i++) {
+		if (thresholds->primary->entries[i].eventfd != eventfd)
 			size++;
 	}
 
+	new = thresholds->spare;
+
 	/* Set thresholds array to NULL if we don't have thresholds */
 	if (!size) {
-		thresholds_new = NULL;
-		goto assign;
+		kfree(new);
+		new = NULL;
+		goto swap_buffers;
 	}
 
-	/* Allocate memory for new array of thresholds */
-	thresholds_new = kmalloc(sizeof(*thresholds_new) +
-			size * sizeof(struct mem_cgroup_threshold),
-			GFP_KERNEL);
-	if (!thresholds_new) {
-		ret = -ENOMEM;
-		goto unlock;
-	}
-	thresholds_new->size = size;
+	new->size = size;
 
 	/* Copy thresholds and find current threshold */
-	atomic_set(&thresholds_new->current_threshold, -1);
-	for (i = 0, j = 0; i < thresholds->size; i++) {
-		if (thresholds->entries[i].eventfd == eventfd)
+	new->current_threshold = -1;
+	for (i = 0, j = 0; i < thresholds->primary->size; i++) {
+		if (thresholds->primary->entries[i].eventfd == eventfd)
 			continue;
 
-		thresholds_new->entries[j] = thresholds->entries[i];
-		if (thresholds_new->entries[j].threshold < usage) {
+		new->entries[j] = thresholds->primary->entries[i];
+		if (new->entries[j].threshold < usage) {
 			/*
-			 * thresholds_new->current_threshold will not be used
+			 * new->current_threshold will not be used
 			 * until rcu_assign_pointer(), so it's safe to increment
 			 * it here.
 			 */
-			atomic_inc(&thresholds_new->current_threshold);
+			++new->current_threshold;
 		}
 		j++;
 	}
 
-assign:
-	if (type == _MEM)
-		rcu_assign_pointer(memcg->thresholds, thresholds_new);
-	else
-		rcu_assign_pointer(memcg->memsw_thresholds, thresholds_new);
+swap_buffers:
+	/* Swap primary and spare array */
+	thresholds->spare = thresholds->primary;
+	rcu_assign_pointer(thresholds->primary, new);
 
-	/* To be sure that nobody uses thresholds before freeing it */
+	/* To be sure that nobody uses thresholds */
 	synchronize_rcu();
 
-	kfree(thresholds);
-unlock:
 	mutex_unlock(&memcg->thresholds_lock);
+}
 
-	return ret;
+static int mem_cgroup_oom_register_event(struct cgroup *cgrp,
+	struct cftype *cft, struct eventfd_ctx *eventfd, const char *args)
+{
+	struct mem_cgroup *memcg = mem_cgroup_from_cont(cgrp);
+	struct mem_cgroup_eventfd_list *event;
+	int type = MEMFILE_TYPE(cft->private);
+
+	BUG_ON(type != _OOM_TYPE);
+	event = kmalloc(sizeof(*event),	GFP_KERNEL);
+	if (!event)
+		return -ENOMEM;
+
+	mutex_lock(&memcg_oom_mutex);
+
+	event->eventfd = eventfd;
+	list_add(&event->list, &memcg->oom_notify);
+
+	/* already in OOM ? */
+	if (atomic_read(&memcg->oom_lock))
+		eventfd_signal(eventfd, 1);
+	mutex_unlock(&memcg_oom_mutex);
+
+	return 0;
+}
+
+static void mem_cgroup_oom_unregister_event(struct cgroup *cgrp,
+	struct cftype *cft, struct eventfd_ctx *eventfd)
+{
+	struct mem_cgroup *mem = mem_cgroup_from_cont(cgrp);
+	struct mem_cgroup_eventfd_list *ev, *tmp;
+	int type = MEMFILE_TYPE(cft->private);
+
+	BUG_ON(type != _OOM_TYPE);
+
+	mutex_lock(&memcg_oom_mutex);
+
+	list_for_each_entry_safe(ev, tmp, &mem->oom_notify, list) {
+		if (ev->eventfd == eventfd) {
+			list_del(&ev->list);
+			kfree(ev);
+		}
+	}
+
+	mutex_unlock(&memcg_oom_mutex);
+}
+
+static int mem_cgroup_oom_control_read(struct cgroup *cgrp,
+	struct cftype *cft,  struct cgroup_map_cb *cb)
+{
+	struct mem_cgroup *mem = mem_cgroup_from_cont(cgrp);
+
+	cb->fill(cb, "oom_kill_disable", mem->oom_kill_disable);
+
+	if (atomic_read(&mem->oom_lock))
+		cb->fill(cb, "under_oom", 1);
+	else
+		cb->fill(cb, "under_oom", 0);
+	return 0;
+}
+
+/*
+ */
+static int mem_cgroup_oom_control_write(struct cgroup *cgrp,
+	struct cftype *cft, u64 val)
+{
+	struct mem_cgroup *mem = mem_cgroup_from_cont(cgrp);
+	struct mem_cgroup *parent;
+
+	/* cannot set to root cgroup and only 0 and 1 are allowed */
+	if (!cgrp->parent || !((val == 0) || (val == 1)))
+		return -EINVAL;
+
+	parent = mem_cgroup_from_cont(cgrp->parent);
+
+	cgroup_lock();
+	/* oom-kill-disable is a flag for subhierarchy. */
+	if ((parent->use_hierarchy) ||
+	    (mem->use_hierarchy && !list_empty(&cgrp->children))) {
+		cgroup_unlock();
+		return -EINVAL;
+	}
+	mem->oom_kill_disable = val;
+	cgroup_unlock();
+	return 0;
 }
 
 static struct cftype mem_cgroup_files[] = {
@@ -3544,8 +3790,8 @@
 		.name = "usage_in_bytes",
 		.private = MEMFILE_PRIVATE(_MEM, RES_USAGE),
 		.read_u64 = mem_cgroup_read,
-		.register_event = mem_cgroup_register_event,
-		.unregister_event = mem_cgroup_unregister_event,
+		.register_event = mem_cgroup_usage_register_event,
+		.unregister_event = mem_cgroup_usage_unregister_event,
 	},
 	{
 		.name = "max_usage_in_bytes",
@@ -3594,6 +3840,14 @@
 		.read_u64 = mem_cgroup_move_charge_read,
 		.write_u64 = mem_cgroup_move_charge_write,
 	},
+	{
+		.name = "oom_control",
+		.read_map = mem_cgroup_oom_control_read,
+		.write_u64 = mem_cgroup_oom_control_write,
+		.register_event = mem_cgroup_oom_register_event,
+		.unregister_event = mem_cgroup_oom_unregister_event,
+		.private = MEMFILE_PRIVATE(_OOM_TYPE, OOM_CONTROL),
+	},
 };
 
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
@@ -3602,8 +3856,8 @@
 		.name = "memsw.usage_in_bytes",
 		.private = MEMFILE_PRIVATE(_MEMSWAP, RES_USAGE),
 		.read_u64 = mem_cgroup_read,
-		.register_event = mem_cgroup_register_event,
-		.unregister_event = mem_cgroup_unregister_event,
+		.register_event = mem_cgroup_usage_register_event,
+		.unregister_event = mem_cgroup_usage_unregister_event,
 	},
 	{
 		.name = "memsw.max_usage_in_bytes",
@@ -3831,6 +4085,7 @@
 	} else {
 		parent = mem_cgroup_from_cont(cont->parent);
 		mem->use_hierarchy = parent->use_hierarchy;
+		mem->oom_kill_disable = parent->oom_kill_disable;
 	}
 
 	if (parent && parent->use_hierarchy) {
@@ -3849,6 +4104,7 @@
 	}
 	mem->last_scanned_child = 0;
 	spin_lock_init(&mem->reclaim_param_lock);
+	INIT_LIST_HEAD(&mem->oom_notify);
 
 	if (parent)
 		mem->swappiness = get_swappiness(parent);
@@ -3976,6 +4232,80 @@
 	MC_TARGET_SWAP,
 };
 
+static struct page *mc_handle_present_pte(struct vm_area_struct *vma,
+						unsigned long addr, pte_t ptent)
+{
+	struct page *page = vm_normal_page(vma, addr, ptent);
+
+	if (!page || !page_mapped(page))
+		return NULL;
+	if (PageAnon(page)) {
+		/* we don't move shared anon */
+		if (!move_anon() || page_mapcount(page) > 2)
+			return NULL;
+	} else if (!move_file())
+		/* we ignore mapcount for file pages */
+		return NULL;
+	if (!get_page_unless_zero(page))
+		return NULL;
+
+	return page;
+}
+
+static struct page *mc_handle_swap_pte(struct vm_area_struct *vma,
+			unsigned long addr, pte_t ptent, swp_entry_t *entry)
+{
+	int usage_count;
+	struct page *page = NULL;
+	swp_entry_t ent = pte_to_swp_entry(ptent);
+
+	if (!move_anon() || non_swap_entry(ent))
+		return NULL;
+	usage_count = mem_cgroup_count_swap_user(ent, &page);
+	if (usage_count > 1) { /* we don't move shared anon */
+		if (page)
+			put_page(page);
+		return NULL;
+	}
+	if (do_swap_account)
+		entry->val = ent.val;
+
+	return page;
+}
+
+static struct page *mc_handle_file_pte(struct vm_area_struct *vma,
+			unsigned long addr, pte_t ptent, swp_entry_t *entry)
+{
+	struct page *page = NULL;
+	struct inode *inode;
+	struct address_space *mapping;
+	pgoff_t pgoff;
+
+	if (!vma->vm_file) /* anonymous vma */
+		return NULL;
+	if (!move_file())
+		return NULL;
+
+	inode = vma->vm_file->f_path.dentry->d_inode;
+	mapping = vma->vm_file->f_mapping;
+	if (pte_none(ptent))
+		pgoff = linear_page_index(vma, addr);
+	else /* pte_file(ptent) is true */
+		pgoff = pte_to_pgoff(ptent);
+
+	/* page is moved even if it's not RSS of this task(page-faulted). */
+	if (!mapping_cap_swap_backed(mapping)) { /* normal file */
+		page = find_get_page(mapping, pgoff);
+	} else { /* shmem/tmpfs file. we should take account of swap too. */
+		swp_entry_t ent;
+		mem_cgroup_get_shmem_target(inode, pgoff, &page, &ent);
+		if (do_swap_account)
+			entry->val = ent.val;
+	}
+
+	return page;
+}
+
 static int is_target_pte_for_mc(struct vm_area_struct *vma,
 		unsigned long addr, pte_t ptent, union mc_target *target)
 {
@@ -3983,43 +4313,16 @@
 	struct page_cgroup *pc;
 	int ret = 0;
 	swp_entry_t ent = { .val = 0 };
-	int usage_count = 0;
-	bool move_anon = test_bit(MOVE_CHARGE_TYPE_ANON,
-					&mc.to->move_charge_at_immigrate);
 
-	if (!pte_present(ptent)) {
-		/* TODO: handle swap of shmes/tmpfs */
-		if (pte_none(ptent) || pte_file(ptent))
-			return 0;
-		else if (is_swap_pte(ptent)) {
-			ent = pte_to_swp_entry(ptent);
-			if (!move_anon || non_swap_entry(ent))
-				return 0;
-			usage_count = mem_cgroup_count_swap_user(ent, &page);
-		}
-	} else {
-		page = vm_normal_page(vma, addr, ptent);
-		if (!page || !page_mapped(page))
-			return 0;
-		/*
-		 * TODO: We don't move charges of file(including shmem/tmpfs)
-		 * pages for now.
-		 */
-		if (!move_anon || !PageAnon(page))
-			return 0;
-		if (!get_page_unless_zero(page))
-			return 0;
-		usage_count = page_mapcount(page);
-	}
-	if (usage_count > 1) {
-		/*
-		 * TODO: We don't move charges of shared(used by multiple
-		 * processes) pages for now.
-		 */
-		if (page)
-			put_page(page);
+	if (pte_present(ptent))
+		page = mc_handle_present_pte(vma, addr, ptent);
+	else if (is_swap_pte(ptent))
+		page = mc_handle_swap_pte(vma, addr, ptent, &ent);
+	else if (pte_none(ptent) || pte_file(ptent))
+		page = mc_handle_file_pte(vma, addr, ptent, &ent);
+
+	if (!page && !ent.val)
 		return 0;
-	}
 	if (page) {
 		pc = lookup_page_cgroup(page);
 		/*
@@ -4035,8 +4338,8 @@
 		if (!ret || !target)
 			put_page(page);
 	}
-	/* throught */
-	if (ent.val && do_swap_account && !ret &&
+	/* There is a swap entry and a page doesn't exist or isn't charged */
+	if (ent.val && !ret &&
 			css_id(&mc.from->css) == lookup_swap_cgroup(ent)) {
 		ret = MC_TARGET_SWAP;
 		if (target)
@@ -4077,9 +4380,6 @@
 		};
 		if (is_vm_hugetlb_page(vma))
 			continue;
-		/* TODO: We don't move charges of shmem/tmpfs pages for now. */
-		if (vma->vm_flags & VM_SHARED)
-			continue;
 		walk_page_range(vma->vm_start, vma->vm_end,
 					&mem_cgroup_count_precharge_walk);
 	}
@@ -4102,6 +4402,7 @@
 	if (mc.precharge) {
 		__mem_cgroup_cancel_charge(mc.to, mc.precharge);
 		mc.precharge = 0;
+		memcg_oom_recover(mc.to);
 	}
 	/*
 	 * we didn't uncharge from mc.from at mem_cgroup_move_account(), so
@@ -4110,6 +4411,7 @@
 	if (mc.moved_charge) {
 		__mem_cgroup_cancel_charge(mc.from, mc.moved_charge);
 		mc.moved_charge = 0;
+		memcg_oom_recover(mc.from);
 	}
 	/* we must fixup refcnts and charges */
 	if (mc.moved_swap) {
@@ -4274,9 +4576,6 @@
 		};
 		if (is_vm_hugetlb_page(vma))
 			continue;
-		/* TODO: We don't move charges of shmem/tmpfs pages for now. */
-		if (vma->vm_flags & VM_SHARED)
-			continue;
 		ret = walk_page_range(vma->vm_start, vma->vm_end,
 						&mem_cgroup_move_charge_walk);
 		if (ret)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 7575101..5d6fb33 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2098,7 +2098,7 @@
 		/* contextualize the tmpfs mount point mempolicy */
 		new = mpol_new(mpol->mode, mpol->flags, &mpol->w.user_nodemask);
 		if (IS_ERR(new))
-			goto put_free; /* no valid nodemask intersection */
+			goto free_scratch; /* no valid nodemask intersection */
 
 		task_lock(current);
 		ret = mpol_set_nodemask(new, &mpol->w.user_nodemask, scratch);
@@ -2114,6 +2114,7 @@
 
 put_free:
 		mpol_put(new);			/* drop initial ref */
+free_scratch:
 		NODEMASK_SCRATCH_FREE(scratch);
 	}
 }
diff --git a/mm/migrate.c b/mm/migrate.c
index 09e2471..4205b1d 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -590,7 +590,7 @@
 	}
 
 	/* charge against new page */
-	charge = mem_cgroup_prepare_migration(page, &mem);
+	charge = mem_cgroup_prepare_migration(page, newpage, &mem);
 	if (charge == -ENOMEM) {
 		rc = -ENOMEM;
 		goto unlock;
diff --git a/mm/nommu.c b/mm/nommu.c
index 63fa17d..b76f3ee 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -918,14 +918,6 @@
 			if (!(capabilities & BDI_CAP_MAP_DIRECT))
 				return -ENODEV;
 
-			if (((prot & PROT_READ)  && !(capabilities & BDI_CAP_READ_MAP))  ||
-			    ((prot & PROT_WRITE) && !(capabilities & BDI_CAP_WRITE_MAP)) ||
-			    ((prot & PROT_EXEC)  && !(capabilities & BDI_CAP_EXEC_MAP))
-			    ) {
-				printk("MAP_SHARED not completely supported on !MMU\n");
-				return -EINVAL;
-			}
-
 			/* we mustn't privatise shared mappings */
 			capabilities &= ~BDI_CAP_MAP_COPY;
 		}
@@ -941,6 +933,20 @@
 				capabilities &= ~BDI_CAP_MAP_DIRECT;
 		}
 
+		if (capabilities & BDI_CAP_MAP_DIRECT) {
+			if (((prot & PROT_READ)  && !(capabilities & BDI_CAP_READ_MAP))  ||
+			    ((prot & PROT_WRITE) && !(capabilities & BDI_CAP_WRITE_MAP)) ||
+			    ((prot & PROT_EXEC)  && !(capabilities & BDI_CAP_EXEC_MAP))
+			    ) {
+				capabilities &= ~BDI_CAP_MAP_DIRECT;
+				if (flags & MAP_SHARED) {
+					printk(KERN_WARNING
+					       "MAP_SHARED not completely supported on !MMU\n");
+					return -EINVAL;
+				}
+			}
+		}
+
 		/* handle executable mappings and implied executable
 		 * mappings */
 		if (file->f_path.mnt->mnt_flags & MNT_NOEXEC) {
@@ -996,22 +1002,20 @@
 	unsigned long vm_flags;
 
 	vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags);
-	vm_flags |= VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
 	/* vm_flags |= mm->def_flags; */
 
 	if (!(capabilities & BDI_CAP_MAP_DIRECT)) {
 		/* attempt to share read-only copies of mapped file chunks */
+		vm_flags |= VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
 		if (file && !(prot & PROT_WRITE))
 			vm_flags |= VM_MAYSHARE;
-	}
-	else {
+	} else {
 		/* overlay a shareable mapping on the backing device or inode
 		 * if possible - used for chardevs, ramfs/tmpfs/shmfs and
 		 * romfs/cramfs */
+		vm_flags |= VM_MAYSHARE | (capabilities & BDI_CAP_VMFLAGS);
 		if (flags & MAP_SHARED)
-			vm_flags |= VM_MAYSHARE | VM_SHARED;
-		else if ((((vm_flags & capabilities) ^ vm_flags) & BDI_CAP_VMFLAGS) == 0)
-			vm_flags |= VM_MAYSHARE;
+			vm_flags |= VM_SHARED;
 	}
 
 	/* refuse to let anyone share private mappings with this process if
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index b68e802..709aedf 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -479,12 +479,9 @@
 	read_lock(&tasklist_lock);
 retry:
 	p = select_bad_process(&points, mem);
-	if (PTR_ERR(p) == -1UL)
+	if (!p || PTR_ERR(p) == -1UL)
 		goto out;
 
-	if (!p)
-		p = current;
-
 	if (oom_kill_process(p, gfp_mask, 0, points, mem,
 				"Memory cgroup out of memory"))
 		goto retry;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 08b3499..431214b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -57,6 +57,22 @@
 #include <asm/div64.h>
 #include "internal.h"
 
+#ifdef CONFIG_USE_PERCPU_NUMA_NODE_ID
+DEFINE_PER_CPU(int, numa_node);
+EXPORT_PER_CPU_SYMBOL(numa_node);
+#endif
+
+#ifdef CONFIG_HAVE_MEMORYLESS_NODES
+/*
+ * N.B., Do NOT reference the '_numa_mem_' per cpu variable directly.
+ * It will not be defined when CONFIG_HAVE_MEMORYLESS_NODES is not defined.
+ * Use the accessor functions set_numa_mem(), numa_mem_id() and cpu_to_mem()
+ * defined in <linux/topology.h>.
+ */
+DEFINE_PER_CPU(int, _numa_mem_);		/* Kernel "local memory" node */
+EXPORT_PER_CPU_SYMBOL(_numa_mem_);
+#endif
+
 /*
  * Array of node states.
  */
@@ -2856,6 +2872,24 @@
 		zlc->z_to_n[z - zonelist->_zonerefs] = zonelist_node_idx(z);
 }
 
+#ifdef CONFIG_HAVE_MEMORYLESS_NODES
+/*
+ * Return node id of node used for "local" allocations.
+ * I.e., first node id of first zone in arg node's generic zonelist.
+ * Used for initializing percpu 'numa_mem', which is used primarily
+ * for kernel allocations, so use GFP_KERNEL flags to locate zonelist.
+ */
+int local_memory_node(int node)
+{
+	struct zone *zone;
+
+	(void)first_zones_zonelist(node_zonelist(node, GFP_KERNEL),
+				   gfp_zone(GFP_KERNEL),
+				   NULL,
+				   &zone);
+	return zone->node;
+}
+#endif
 
 #else	/* CONFIG_NUMA */
 
@@ -2970,9 +3004,23 @@
 	 * needs the percpu allocator in order to allocate its pagesets
 	 * (a chicken-egg dilemma).
 	 */
-	for_each_possible_cpu(cpu)
+	for_each_possible_cpu(cpu) {
 		setup_pageset(&per_cpu(boot_pageset, cpu), 0);
 
+#ifdef CONFIG_HAVE_MEMORYLESS_NODES
+		/*
+		 * We now know the "local memory node" for each node--
+		 * i.e., the node of the first zone in the generic zonelist.
+		 * Set up numa_mem percpu variable for on-line cpus.  During
+		 * boot, only the boot cpu should be on-line;  we'll init the
+		 * secondary cpus' numa_mem as they come on-line.  During
+		 * node/memory hotplug, we'll fixup all on-line cpus.
+		 */
+		if (cpu_online(cpu))
+			set_cpu_numa_mem(cpu, local_memory_node(cpu_to_node(cpu)));
+#endif
+	}
+
 	return 0;
 }
 
diff --git a/mm/shmem.c b/mm/shmem.c
index 4ef9797..7e5030a 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -727,10 +727,11 @@
 	if (inode->i_mapping->nrpages && (info->flags & SHMEM_PAGEIN)) {
 		/*
 		 * Call truncate_inode_pages again: racing shmem_unuse_inode
-		 * may have swizzled a page in from swap since vmtruncate or
-		 * generic_delete_inode did it, before we lowered next_index.
-		 * Also, though shmem_getpage checks i_size before adding to
-		 * cache, no recheck after: so fix the narrow window there too.
+		 * may have swizzled a page in from swap since
+		 * truncate_pagecache or generic_delete_inode did it, before we
+		 * lowered next_index.  Also, though shmem_getpage checks
+		 * i_size before adding to cache, no recheck after: so fix the
+		 * narrow window there too.
 		 *
 		 * Recalling truncate_inode_pages_range and unmap_mapping_range
 		 * every time for punch_hole (which never got a chance to clear
@@ -760,19 +761,16 @@
 	}
 }
 
-static void shmem_truncate(struct inode *inode)
-{
-	shmem_truncate_range(inode, inode->i_size, (loff_t)-1);
-}
-
 static int shmem_notify_change(struct dentry *dentry, struct iattr *attr)
 {
 	struct inode *inode = dentry->d_inode;
-	struct page *page = NULL;
 	int error;
 
 	if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE)) {
-		if (attr->ia_size < inode->i_size) {
+		loff_t newsize = attr->ia_size;
+		struct page *page = NULL;
+
+		if (newsize < inode->i_size) {
 			/*
 			 * If truncating down to a partial page, then
 			 * if that page is already allocated, hold it
@@ -780,9 +778,9 @@
 			 * truncate_partial_page cannnot miss it were
 			 * it assigned to swap.
 			 */
-			if (attr->ia_size & (PAGE_CACHE_SIZE-1)) {
+			if (newsize & (PAGE_CACHE_SIZE-1)) {
 				(void) shmem_getpage(inode,
-					attr->ia_size>>PAGE_CACHE_SHIFT,
+					newsize >> PAGE_CACHE_SHIFT,
 						&page, SGP_READ, NULL);
 				if (page)
 					unlock_page(page);
@@ -794,24 +792,29 @@
 			 * if it's being fully truncated to zero-length: the
 			 * nrpages check is efficient enough in that case.
 			 */
-			if (attr->ia_size) {
+			if (newsize) {
 				struct shmem_inode_info *info = SHMEM_I(inode);
 				spin_lock(&info->lock);
 				info->flags &= ~SHMEM_PAGEIN;
 				spin_unlock(&info->lock);
 			}
 		}
+
+		error = simple_setsize(inode, newsize);
+		if (page)
+			page_cache_release(page);
+		if (error)
+			return error;
+		shmem_truncate_range(inode, newsize, (loff_t)-1);
 	}
 
 	error = inode_change_ok(inode, attr);
 	if (!error)
-		error = inode_setattr(inode, attr);
+		generic_setattr(inode, attr);
 #ifdef CONFIG_TMPFS_POSIX_ACL
 	if (!error && (attr->ia_valid & ATTR_MODE))
 		error = generic_acl_chmod(inode);
 #endif
-	if (page)
-		page_cache_release(page);
 	return error;
 }
 
@@ -819,11 +822,11 @@
 {
 	struct shmem_inode_info *info = SHMEM_I(inode);
 
-	if (inode->i_op->truncate == shmem_truncate) {
+	if (inode->i_mapping->a_ops == &shmem_aops) {
 		truncate_inode_pages(inode->i_mapping, 0);
 		shmem_unacct_size(info->flags, inode->i_size);
 		inode->i_size = 0;
-		shmem_truncate(inode);
+		shmem_truncate_range(inode, 0, (loff_t)-1);
 		if (!list_empty(&info->swaplist)) {
 			mutex_lock(&shmem_swaplist_mutex);
 			list_del_init(&info->swaplist);
@@ -2022,7 +2025,6 @@
 };
 
 static const struct inode_operations shmem_symlink_inode_operations = {
-	.truncate	= shmem_truncate,
 	.readlink	= generic_readlink,
 	.follow_link	= shmem_follow_link,
 	.put_link	= shmem_put_link,
@@ -2433,14 +2435,13 @@
 	.write		= do_sync_write,
 	.aio_read	= shmem_file_aio_read,
 	.aio_write	= generic_file_aio_write,
-	.fsync		= simple_sync_file,
+	.fsync		= noop_fsync,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= generic_file_splice_write,
 #endif
 };
 
 static const struct inode_operations shmem_inode_operations = {
-	.truncate	= shmem_truncate,
 	.setattr	= shmem_notify_change,
 	.truncate_range	= shmem_truncate_range,
 #ifdef CONFIG_TMPFS_POSIX_ACL
@@ -2559,6 +2560,45 @@
 	return error;
 }
 
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+/**
+ * mem_cgroup_get_shmem_target - find a page or entry assigned to the shmem file
+ * @inode: the inode to be searched
+ * @pgoff: the offset to be searched
+ * @pagep: the pointer for the found page to be stored
+ * @ent: the pointer for the found swap entry to be stored
+ *
+ * If a page is found, refcount of it is incremented. Callers should handle
+ * these refcount.
+ */
+void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff,
+					struct page **pagep, swp_entry_t *ent)
+{
+	swp_entry_t entry = { .val = 0 }, *ptr;
+	struct page *page = NULL;
+	struct shmem_inode_info *info = SHMEM_I(inode);
+
+	if ((pgoff << PAGE_CACHE_SHIFT) >= i_size_read(inode))
+		goto out;
+
+	spin_lock(&info->lock);
+	ptr = shmem_swp_entry(info, pgoff, NULL);
+#ifdef CONFIG_SWAP
+	if (ptr && ptr->val) {
+		entry.val = ptr->val;
+		page = find_get_page(&swapper_space, entry.val);
+	} else
+#endif
+		page = find_get_page(inode->i_mapping, pgoff);
+	if (ptr)
+		shmem_swp_unmap(ptr);
+	spin_unlock(&info->lock);
+out:
+	*pagep = page;
+	*ent = entry;
+}
+#endif
+
 #else /* !CONFIG_SHMEM */
 
 /*
@@ -2598,6 +2638,31 @@
 	return 0;
 }
 
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+/**
+ * mem_cgroup_get_shmem_target - find a page or entry assigned to the shmem file
+ * @inode: the inode to be searched
+ * @pgoff: the offset to be searched
+ * @pagep: the pointer for the found page to be stored
+ * @ent: the pointer for the found swap entry to be stored
+ *
+ * If a page is found, refcount of it is incremented. Callers should handle
+ * these refcount.
+ */
+void mem_cgroup_get_shmem_target(struct inode *inode, pgoff_t pgoff,
+					struct page **pagep, swp_entry_t *ent)
+{
+	struct page *page = NULL;
+
+	if ((pgoff << PAGE_CACHE_SHIFT) >= i_size_read(inode))
+		goto out;
+	page = find_get_page(inode->i_mapping, pgoff);
+out:
+	*pagep = page;
+	*ent = (swp_entry_t){ .val = 0 };
+}
+#endif
+
 #define shmem_vm_ops				generic_file_vm_ops
 #define shmem_file_operations			ramfs_file_operations
 #define shmem_get_inode(sb, dir, mode, dev, flags)	ramfs_get_inode(sb, dir, mode, dev)
diff --git a/mm/slab.c b/mm/slab.c
index 02786e1..e49f8f4 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -821,7 +821,7 @@
 {
 	int node;
 
-	node = next_node(cpu_to_node(cpu), node_online_map);
+	node = next_node(cpu_to_mem(cpu), node_online_map);
 	if (node == MAX_NUMNODES)
 		node = first_node(node_online_map);
 
@@ -1050,7 +1050,7 @@
 	struct array_cache *alien = NULL;
 	int node;
 
-	node = numa_node_id();
+	node = numa_mem_id();
 
 	/*
 	 * Make sure we are not freeing a object from another node to the array
@@ -1129,7 +1129,7 @@
 {
 	struct kmem_cache *cachep;
 	struct kmem_list3 *l3 = NULL;
-	int node = cpu_to_node(cpu);
+	int node = cpu_to_mem(cpu);
 	const struct cpumask *mask = cpumask_of_node(node);
 
 	list_for_each_entry(cachep, &cache_chain, next) {
@@ -1194,7 +1194,7 @@
 {
 	struct kmem_cache *cachep;
 	struct kmem_list3 *l3 = NULL;
-	int node = cpu_to_node(cpu);
+	int node = cpu_to_mem(cpu);
 	int err;
 
 	/*
@@ -1321,7 +1321,7 @@
 		mutex_unlock(&cache_chain_mutex);
 		break;
 	}
-	return err ? NOTIFY_BAD : NOTIFY_OK;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block __cpuinitdata cpucache_notifier = {
@@ -1479,7 +1479,7 @@
 	 * 6) Resize the head arrays of the kmalloc caches to their final sizes.
 	 */
 
-	node = numa_node_id();
+	node = numa_mem_id();
 
 	/* 1) create the cache_cache */
 	INIT_LIST_HEAD(&cache_chain);
@@ -2121,7 +2121,7 @@
 			}
 		}
 	}
-	cachep->nodelists[numa_node_id()]->next_reap =
+	cachep->nodelists[numa_mem_id()]->next_reap =
 			jiffies + REAPTIMEOUT_LIST3 +
 			((unsigned long)cachep) % REAPTIMEOUT_LIST3;
 
@@ -2452,7 +2452,7 @@
 {
 #ifdef CONFIG_SMP
 	check_irq_off();
-	assert_spin_locked(&cachep->nodelists[numa_node_id()]->list_lock);
+	assert_spin_locked(&cachep->nodelists[numa_mem_id()]->list_lock);
 #endif
 }
 
@@ -2479,7 +2479,7 @@
 {
 	struct kmem_cache *cachep = arg;
 	struct array_cache *ac;
-	int node = numa_node_id();
+	int node = numa_mem_id();
 
 	check_irq_off();
 	ac = cpu_cache_get(cachep);
@@ -3012,7 +3012,7 @@
 
 retry:
 	check_irq_off();
-	node = numa_node_id();
+	node = numa_mem_id();
 	ac = cpu_cache_get(cachep);
 	batchcount = ac->batchcount;
 	if (!ac->touched && batchcount > BATCHREFILL_LIMIT) {
@@ -3216,10 +3216,10 @@
 
 	if (in_interrupt() || (flags & __GFP_THISNODE))
 		return NULL;
-	nid_alloc = nid_here = numa_node_id();
+	nid_alloc = nid_here = numa_mem_id();
 	get_mems_allowed();
 	if (cpuset_do_slab_mem_spread() && (cachep->flags & SLAB_MEM_SPREAD))
-		nid_alloc = cpuset_mem_spread_node();
+		nid_alloc = cpuset_slab_spread_node();
 	else if (current->mempolicy)
 		nid_alloc = slab_node(current->mempolicy);
 	put_mems_allowed();
@@ -3281,7 +3281,7 @@
 		if (local_flags & __GFP_WAIT)
 			local_irq_enable();
 		kmem_flagcheck(cache, flags);
-		obj = kmem_getpages(cache, local_flags, numa_node_id());
+		obj = kmem_getpages(cache, local_flags, numa_mem_id());
 		if (local_flags & __GFP_WAIT)
 			local_irq_disable();
 		if (obj) {
@@ -3389,6 +3389,7 @@
 {
 	unsigned long save_flags;
 	void *ptr;
+	int slab_node = numa_mem_id();
 
 	flags &= gfp_allowed_mask;
 
@@ -3401,7 +3402,7 @@
 	local_irq_save(save_flags);
 
 	if (nodeid == -1)
-		nodeid = numa_node_id();
+		nodeid = slab_node;
 
 	if (unlikely(!cachep->nodelists[nodeid])) {
 		/* Node not bootstrapped yet */
@@ -3409,7 +3410,7 @@
 		goto out;
 	}
 
-	if (nodeid == numa_node_id()) {
+	if (nodeid == slab_node) {
 		/*
 		 * Use the locally cached objects if possible.
 		 * However ____cache_alloc does not allow fallback
@@ -3453,8 +3454,8 @@
 	 * We may just have run out of memory on the local node.
 	 * ____cache_alloc_node() knows how to locate memory on other nodes
 	 */
- 	if (!objp)
- 		objp = ____cache_alloc_node(cache, flags, numa_node_id());
+	if (!objp)
+		objp = ____cache_alloc_node(cache, flags, numa_mem_id());
 
   out:
 	return objp;
@@ -3551,7 +3552,7 @@
 {
 	int batchcount;
 	struct kmem_list3 *l3;
-	int node = numa_node_id();
+	int node = numa_mem_id();
 
 	batchcount = ac->batchcount;
 #if DEBUG
@@ -3985,7 +3986,7 @@
 		return -ENOMEM;
 
 	for_each_online_cpu(i) {
-		new->new[i] = alloc_arraycache(cpu_to_node(i), limit,
+		new->new[i] = alloc_arraycache(cpu_to_mem(i), limit,
 						batchcount, gfp);
 		if (!new->new[i]) {
 			for (i--; i >= 0; i--)
@@ -4007,9 +4008,9 @@
 		struct array_cache *ccold = new->new[i];
 		if (!ccold)
 			continue;
-		spin_lock_irq(&cachep->nodelists[cpu_to_node(i)]->list_lock);
-		free_block(cachep, ccold->entry, ccold->avail, cpu_to_node(i));
-		spin_unlock_irq(&cachep->nodelists[cpu_to_node(i)]->list_lock);
+		spin_lock_irq(&cachep->nodelists[cpu_to_mem(i)]->list_lock);
+		free_block(cachep, ccold->entry, ccold->avail, cpu_to_mem(i));
+		spin_unlock_irq(&cachep->nodelists[cpu_to_mem(i)]->list_lock);
 		kfree(ccold);
 	}
 	kfree(new);
@@ -4115,7 +4116,7 @@
 {
 	struct kmem_cache *searchp;
 	struct kmem_list3 *l3;
-	int node = numa_node_id();
+	int node = numa_mem_id();
 	struct delayed_work *work = to_delayed_work(w);
 
 	if (!mutex_trylock(&cache_chain_mutex))
diff --git a/mm/truncate.c b/mm/truncate.c
index f42675a..937571b 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -548,18 +548,18 @@
  * NOTE! We have to be ready to update the memory sharing
  * between the file and the memory map for a potential last
  * incomplete page.  Ugly, but necessary.
+ *
+ * This function is deprecated and simple_setsize or truncate_pagecache
+ * should be used instead.
  */
 int vmtruncate(struct inode *inode, loff_t offset)
 {
-	loff_t oldsize;
 	int error;
 
-	error = inode_newsize_ok(inode, offset);
+	error = simple_setsize(inode, offset);
 	if (error)
 		return error;
-	oldsize = inode->i_size;
-	i_size_write(inode, offset);
-	truncate_pagecache(inode, oldsize, offset);
+
 	if (inode->i_op->truncate)
 		inode->i_op->truncate(inode);
 
diff --git a/net/caif/Kconfig b/net/caif/Kconfig
index cd1daf6..ed65178 100644
--- a/net/caif/Kconfig
+++ b/net/caif/Kconfig
@@ -2,10 +2,8 @@
 # CAIF net configurations
 #
 
-#menu "CAIF Support"
-comment "CAIF Support"
 menuconfig CAIF
-	tristate "Enable CAIF support"
+	tristate "CAIF support"
 	select CRC_CCITT
 	default n
 	---help---
@@ -45,4 +43,3 @@
 	If unsure say Y.
 
 endif
-#endmenu
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index c3a70c5..3d0e095 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -60,7 +60,7 @@
 	atomic_t num_rx_flow_off;
 	atomic_t num_rx_flow_on;
 };
-struct debug_fs_counter cnt;
+static struct debug_fs_counter cnt;
 #define	dbfs_atomic_inc(v) atomic_inc(v)
 #define	dbfs_atomic_dec(v) atomic_dec(v)
 #else
@@ -128,17 +128,17 @@
 	mutex_unlock(&cf_sk->readlock);
 }
 
-int sk_rcvbuf_lowwater(struct caifsock *cf_sk)
+static int sk_rcvbuf_lowwater(struct caifsock *cf_sk)
 {
 	/* A quarter of full buffer is used a low water mark */
 	return cf_sk->sk.sk_rcvbuf / 4;
 }
 
-void caif_flow_ctrl(struct sock *sk, int mode)
+static void caif_flow_ctrl(struct sock *sk, int mode)
 {
 	struct caifsock *cf_sk;
 	cf_sk = container_of(sk, struct caifsock, sk);
-	if (cf_sk->layer.dn)
+	if (cf_sk->layer.dn && cf_sk->layer.dn->modemcmd)
 		cf_sk->layer.dn->modemcmd(cf_sk->layer.dn, mode);
 }
 
@@ -146,7 +146,7 @@
  * Copied from sock.c:sock_queue_rcv_skb(), but changed so packets are
  * not dropped, but CAIF is sending flow off instead.
  */
-int caif_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+static int caif_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
 	int err;
 	int skb_len;
@@ -162,9 +162,8 @@
 			atomic_read(&cf_sk->sk.sk_rmem_alloc),
 			sk_rcvbuf_lowwater(cf_sk));
 		set_rx_flow_off(cf_sk);
-		if (cf_sk->layer.dn)
-			cf_sk->layer.dn->modemcmd(cf_sk->layer.dn,
-						CAIF_MODEMCMD_FLOW_OFF_REQ);
+		dbfs_atomic_inc(&cnt.num_rx_flow_off);
+		caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_OFF_REQ);
 	}
 
 	err = sk_filter(sk, skb);
@@ -175,9 +174,8 @@
 		trace_printk("CAIF: %s():"
 			" sending flow OFF due to rmem_schedule\n",
 			__func__);
-		if (cf_sk->layer.dn)
-			cf_sk->layer.dn->modemcmd(cf_sk->layer.dn,
-						CAIF_MODEMCMD_FLOW_OFF_REQ);
+		dbfs_atomic_inc(&cnt.num_rx_flow_off);
+		caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_OFF_REQ);
 	}
 	skb->dev = NULL;
 	skb_set_owner_r(skb, sk);
@@ -285,65 +283,51 @@
 {
 	struct caifsock *cf_sk = container_of(sk, struct caifsock, sk);
 
-	if (cf_sk->layer.dn == NULL || cf_sk->layer.dn->modemcmd == NULL)
-		return;
 	if (rx_flow_is_on(cf_sk))
 		return;
 
 	if (atomic_read(&sk->sk_rmem_alloc) <= sk_rcvbuf_lowwater(cf_sk)) {
 			dbfs_atomic_inc(&cnt.num_rx_flow_on);
 			set_rx_flow_on(cf_sk);
-			cf_sk->layer.dn->modemcmd(cf_sk->layer.dn,
-						CAIF_MODEMCMD_FLOW_ON_REQ);
+			caif_flow_ctrl(sk, CAIF_MODEMCMD_FLOW_ON_REQ);
 	}
 }
-/*
- * Copied from sock.c:sock_queue_rcv_skb(), and added check that user buffer
- * has sufficient size.
- */
 
+/*
+ * Copied from unix_dgram_recvmsg, but removed credit checks,
+ * changed locking, address handling and added MSG_TRUNC.
+ */
 static int caif_seqpkt_recvmsg(struct kiocb *iocb, struct socket *sock,
-				struct msghdr *m, size_t buf_len, int flags)
+				struct msghdr *m, size_t len, int flags)
 
 {
 	struct sock *sk = sock->sk;
 	struct sk_buff *skb;
-	int ret = 0;
-	int len;
+	int ret;
+	int copylen;
 
-	if (unlikely(!buf_len))
-		return -EINVAL;
+	ret = -EOPNOTSUPP;
+	if (m->msg_flags&MSG_OOB)
+		goto read_error;
 
 	skb = skb_recv_datagram(sk, flags, 0 , &ret);
 	if (!skb)
 		goto read_error;
-
-	len = skb->len;
-
-	if (skb && skb->len > buf_len && !(flags & MSG_PEEK)) {
-		len = buf_len;
-		/*
-		 * Push skb back on receive queue if buffer too small.
-		 * This has a built-in race where multi-threaded receive
-		 * may get packet in wrong order, but multiple read does
-		 * not really guarantee ordered delivery anyway.
-		 * Let's optimize for speed without taking locks.
-		 */
-
-		skb_queue_head(&sk->sk_receive_queue, skb);
-		ret = -EMSGSIZE;
-		goto read_error;
+	copylen = skb->len;
+	if (len < copylen) {
+		m->msg_flags |= MSG_TRUNC;
+		copylen = len;
 	}
 
-	ret = skb_copy_datagram_iovec(skb, 0, m->msg_iov, len);
+	ret = skb_copy_datagram_iovec(skb, 0, m->msg_iov, copylen);
 	if (ret)
-		goto read_error;
+		goto out_free;
 
+	ret = (flags & MSG_TRUNC) ? skb->len : copylen;
+out_free:
 	skb_free_datagram(sk, skb);
-
 	caif_check_flow_release(sk);
-
-	return len;
+	return ret;
 
 read_error:
 	return ret;
@@ -920,17 +904,17 @@
 	timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
 
 	release_sock(sk);
-	err = wait_event_interruptible_timeout(*sk_sleep(sk),
+	err = -ERESTARTSYS;
+	timeo = wait_event_interruptible_timeout(*sk_sleep(sk),
 			sk->sk_state != CAIF_CONNECTING,
 			timeo);
 	lock_sock(sk);
-	if (err < 0)
+	if (timeo < 0)
 		goto out; /* -ERESTARTSYS */
-	if (err == 0 && sk->sk_state != CAIF_CONNECTED) {
-		err = -ETIMEDOUT;
-		goto out;
-	}
 
+	err = -ETIMEDOUT;
+	if (timeo == 0 && sk->sk_state != CAIF_CONNECTED)
+		goto out;
 	if (sk->sk_state != CAIF_CONNECTED) {
 		sock->state = SS_UNCONNECTED;
 		err = sock_error(sk);
@@ -945,7 +929,6 @@
 	return err;
 }
 
-
 /*
  * caif_release() - Disconnect a CAIF Socket
  * Copied and modified af_irda.c:irda_release().
@@ -1019,10 +1002,6 @@
 		(sk->sk_shutdown & RCV_SHUTDOWN))
 		mask |= POLLIN | POLLRDNORM;
 
-	/* Connection-based need to check for termination and startup */
-	if (sk->sk_state == CAIF_DISCONNECTED)
-		mask |= POLLHUP;
-
 	/*
 	 * we set writable also when the other side has shut down the
 	 * connection. This prevents stuck sockets.
@@ -1194,7 +1173,7 @@
 	.owner = THIS_MODULE,
 };
 
-int af_caif_init(void)
+static int af_caif_init(void)
 {
 	int err = sock_register(&caif_family_ops);
 	if (!err)
diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
index 0ffe1e1..fcfda98 100644
--- a/net/caif/cfctrl.c
+++ b/net/caif/cfctrl.c
@@ -44,13 +44,14 @@
 	dev_info.id = 0xff;
 	memset(this, 0, sizeof(*this));
 	cfsrvl_init(&this->serv, 0, &dev_info);
-	spin_lock_init(&this->info_list_lock);
 	atomic_set(&this->req_seq_no, 1);
 	atomic_set(&this->rsp_seq_no, 1);
 	this->serv.layer.receive = cfctrl_recv;
 	sprintf(this->serv.layer.name, "ctrl");
 	this->serv.layer.ctrlcmd = cfctrl_ctrlcmd;
 	spin_lock_init(&this->loop_linkid_lock);
+	spin_lock_init(&this->info_list_lock);
+	INIT_LIST_HEAD(&this->list);
 	this->loop_linkid = 1;
 	return &this->serv.layer;
 }
@@ -112,20 +113,10 @@
 void cfctrl_insert_req(struct cfctrl *ctrl,
 			      struct cfctrl_request_info *req)
 {
-	struct cfctrl_request_info *p;
 	spin_lock(&ctrl->info_list_lock);
-	req->next = NULL;
 	atomic_inc(&ctrl->req_seq_no);
 	req->sequence_no = atomic_read(&ctrl->req_seq_no);
-	if (ctrl->first_req == NULL) {
-		ctrl->first_req = req;
-		spin_unlock(&ctrl->info_list_lock);
-		return;
-	}
-	p = ctrl->first_req;
-	while (p->next != NULL)
-		p = p->next;
-	p->next = req;
+	list_add_tail(&req->list, &ctrl->list);
 	spin_unlock(&ctrl->info_list_lock);
 }
 
@@ -133,46 +124,28 @@
 struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
 					      struct cfctrl_request_info *req)
 {
-	struct cfctrl_request_info *p;
-	struct cfctrl_request_info *ret;
+	struct cfctrl_request_info *p, *tmp, *first;
 
 	spin_lock(&ctrl->info_list_lock);
-	if (ctrl->first_req == NULL) {
-		spin_unlock(&ctrl->info_list_lock);
-		return NULL;
-	}
+	first = list_first_entry(&ctrl->list, struct cfctrl_request_info, list);
 
-	if (cfctrl_req_eq(req, ctrl->first_req)) {
-		ret = ctrl->first_req;
-		caif_assert(ctrl->first_req);
-		atomic_set(&ctrl->rsp_seq_no,
-				 ctrl->first_req->sequence_no);
-		ctrl->first_req = ctrl->first_req->next;
-		spin_unlock(&ctrl->info_list_lock);
-		return ret;
-	}
-
-	p = ctrl->first_req;
-
-	while (p->next != NULL) {
-		if (cfctrl_req_eq(req, p->next)) {
-			pr_warning("CAIF: %s(): Requests are not "
+	list_for_each_entry_safe(p, tmp, &ctrl->list, list) {
+		if (cfctrl_req_eq(req, p)) {
+			if (p != first)
+				pr_warning("CAIF: %s(): Requests are not "
 					"received in order\n",
 					__func__);
-			ret = p->next;
-			atomic_set(&ctrl->rsp_seq_no,
-					p->next->sequence_no);
-			p->next = p->next->next;
-			spin_unlock(&ctrl->info_list_lock);
-			return ret;
-		}
-		p = p->next;
-	}
-	spin_unlock(&ctrl->info_list_lock);
 
-	pr_warning("CAIF: %s(): Request does not match\n",
-		   __func__);
-	return NULL;
+			atomic_set(&ctrl->rsp_seq_no,
+					 p->sequence_no);
+			list_del(&p->list);
+			goto out;
+		}
+	}
+	p = NULL;
+out:
+	spin_unlock(&ctrl->info_list_lock);
+	return p;
 }
 
 struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer)
@@ -388,31 +361,18 @@
 
 void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer)
 {
-	struct cfctrl_request_info *p, *req;
+	struct cfctrl_request_info *p, *tmp;
 	struct cfctrl *ctrl = container_obj(layr);
 	spin_lock(&ctrl->info_list_lock);
+	pr_warning("CAIF: %s(): enter\n", __func__);
 
-	if (ctrl->first_req == NULL) {
-		spin_unlock(&ctrl->info_list_lock);
-		return;
-	}
-
-	if (ctrl->first_req->client_layer == adap_layer) {
-
-		req = ctrl->first_req;
-		ctrl->first_req = ctrl->first_req->next;
-		kfree(req);
-	}
-
-	p = ctrl->first_req;
-	while (p != NULL && p->next != NULL) {
-		if (p->next->client_layer == adap_layer) {
-
-			req = p->next;
-			p->next = p->next->next;
-			kfree(p->next);
+	list_for_each_entry_safe(p, tmp, &ctrl->list, list) {
+		if (p->client_layer == adap_layer) {
+			pr_warning("CAIF: %s(): cancel req :%d\n", __func__,
+					p->sequence_no);
+			list_del(&p->list);
+			kfree(p);
 		}
-		p = p->next;
 	}
 
 	spin_unlock(&ctrl->info_list_lock);
@@ -634,7 +594,7 @@
 	case _CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND:
 	case CAIF_CTRLCMD_FLOW_OFF_IND:
 		spin_lock(&this->info_list_lock);
-		if (this->first_req != NULL) {
+		if (!list_empty(&this->list)) {
 			pr_debug("CAIF: %s(): Received flow off in "
 				   "control layer", __func__);
 		}
diff --git a/net/caif/cfmuxl.c b/net/caif/cfmuxl.c
index 7372f27..80c8d33 100644
--- a/net/caif/cfmuxl.c
+++ b/net/caif/cfmuxl.c
@@ -174,10 +174,11 @@
 	spin_lock(&muxl->receive_lock);
 	up = get_up(muxl, id);
 	if (up == NULL)
-		return NULL;
+		goto out;
 	memset(muxl->up_cache, 0, sizeof(muxl->up_cache));
 	list_del(&up->node);
 	cfsrvl_put(up);
+out:
 	spin_unlock(&muxl->receive_lock);
 	return up;
 }
diff --git a/net/caif/cfpkt_skbuff.c b/net/caif/cfpkt_skbuff.c
index 83fff2f..a6fdf89 100644
--- a/net/caif/cfpkt_skbuff.c
+++ b/net/caif/cfpkt_skbuff.c
@@ -238,6 +238,7 @@
 	struct sk_buff *lastskb;
 	u8 *to;
 	const u8 *data = data2;
+	int ret;
 	if (unlikely(is_erronous(pkt)))
 		return -EPROTO;
 	if (unlikely(skb_headroom(skb) < len)) {
@@ -246,9 +247,10 @@
 	}
 
 	/* Make sure data is writable */
-	if (unlikely(skb_cow_data(skb, 0, &lastskb) < 0)) {
+	ret = skb_cow_data(skb, 0, &lastskb);
+	if (unlikely(ret < 0)) {
 		PKT_ERROR(pkt, "cfpkt_add_head: cow failed\n");
-		return -EPROTO;
+		return ret;
 	}
 
 	to = skb_push(skb, len);
@@ -316,6 +318,8 @@
 struct cfpkt *cfpkt_create_uplink(const unsigned char *data, unsigned int len)
 {
 	struct cfpkt *pkt = cfpkt_create_pfx(len + PKT_POSTFIX, PKT_PREFIX);
+	if (!pkt)
+		return NULL;
 	if (unlikely(data != NULL))
 		cfpkt_add_body(pkt, data, len);
 	return pkt;
@@ -344,12 +348,13 @@
 
 	if (dst->tail + neededtailspace > dst->end) {
 		/* Create a dumplicate of 'dst' with more tail space */
+		struct cfpkt *tmppkt;
 		dstlen = skb_headlen(dst);
 		createlen = dstlen + neededtailspace;
-		tmp = pkt_to_skb(
-			cfpkt_create(createlen + PKT_PREFIX + PKT_POSTFIX));
-		if (!tmp)
+		tmppkt = cfpkt_create(createlen + PKT_PREFIX + PKT_POSTFIX);
+		if (tmppkt == NULL)
 			return NULL;
+		tmp = pkt_to_skb(tmppkt);
 		skb_set_tail_pointer(tmp, dstlen);
 		tmp->len = dstlen;
 		memcpy(tmp->data, dst->data, dstlen);
@@ -368,6 +373,7 @@
 {
 	struct sk_buff *skb2;
 	struct sk_buff *skb = pkt_to_skb(pkt);
+	struct cfpkt *tmppkt;
 	u8 *split = skb->data + pos;
 	u16 len2nd = skb_tail_pointer(skb) - split;
 
@@ -381,9 +387,12 @@
 	}
 
 	/* Create a new packet for the second part of the data */
-	skb2 = pkt_to_skb(
-		cfpkt_create_pfx(len2nd + PKT_PREFIX + PKT_POSTFIX,
-				 PKT_PREFIX));
+	tmppkt = cfpkt_create_pfx(len2nd + PKT_PREFIX + PKT_POSTFIX,
+				  PKT_PREFIX);
+	if (tmppkt == NULL)
+		return NULL;
+	skb2 = pkt_to_skb(tmppkt);
+
 
 	if (skb2 == NULL)
 		return NULL;
diff --git a/net/caif/cfserl.c b/net/caif/cfserl.c
index 06029ea..cb4325a 100644
--- a/net/caif/cfserl.c
+++ b/net/caif/cfserl.c
@@ -67,6 +67,8 @@
 		layr->incomplete_frm =
 		    cfpkt_append(layr->incomplete_frm, newpkt, expectlen);
 		pkt = layr->incomplete_frm;
+		if (pkt == NULL)
+			return -ENOMEM;
 	} else {
 		pkt = newpkt;
 	}
@@ -154,7 +156,6 @@
 			if (layr->usestx) {
 				if (tail_pkt != NULL)
 					pkt = cfpkt_append(pkt, tail_pkt, 0);
-
 				/* Start search for next STX if frame failed */
 				continue;
 			} else {
diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index aff31f3..6e5b7079 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -123,6 +123,12 @@
 			struct caif_payload_info *info;
 			u8 flow_off = SRVL_FLOW_OFF;
 			pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
+			if (!pkt) {
+				pr_warning("CAIF: %s(): Out of memory\n",
+					__func__);
+				return -ENOMEM;
+			}
+
 			if (cfpkt_add_head(pkt, &flow_off, 1) < 0) {
 				pr_err("CAIF: %s(): Packet is erroneous!\n",
 					__func__);
diff --git a/net/core/datagram.c b/net/core/datagram.c
index e0097531..f5b6f43 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -229,15 +229,17 @@
 
 void skb_free_datagram_locked(struct sock *sk, struct sk_buff *skb)
 {
+	bool slow;
+
 	if (likely(atomic_read(&skb->users) == 1))
 		smp_rmb();
 	else if (likely(!atomic_dec_and_test(&skb->users)))
 		return;
 
-	lock_sock_bh(sk);
+	slow = lock_sock_fast(sk);
 	skb_orphan(skb);
 	sk_mem_reclaim_partial(sk);
-	unlock_sock_bh(sk);
+	unlock_sock_fast(sk, slow);
 
 	/* skb is now orphaned, can be freed outside of locked section */
 	__kfree_skb(skb);
diff --git a/net/core/dev.c b/net/core/dev.c
index d273e4e..1845b08 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -954,18 +954,22 @@
 }
 EXPORT_SYMBOL(dev_alloc_name);
 
-static int dev_get_valid_name(struct net *net, const char *name, char *buf,
-			      bool fmt)
+static int dev_get_valid_name(struct net_device *dev, const char *name, bool fmt)
 {
+	struct net *net;
+
+	BUG_ON(!dev_net(dev));
+	net = dev_net(dev);
+
 	if (!dev_valid_name(name))
 		return -EINVAL;
 
 	if (fmt && strchr(name, '%'))
-		return __dev_alloc_name(net, name, buf);
+		return dev_alloc_name(dev, name);
 	else if (__dev_get_by_name(net, name))
 		return -EEXIST;
-	else if (buf != name)
-		strlcpy(buf, name, IFNAMSIZ);
+	else if (dev->name != name)
+		strlcpy(dev->name, name, IFNAMSIZ);
 
 	return 0;
 }
@@ -997,7 +1001,7 @@
 
 	memcpy(oldname, dev->name, IFNAMSIZ);
 
-	err = dev_get_valid_name(net, newname, dev->name, 1);
+	err = dev_get_valid_name(dev, newname, 1);
 	if (err < 0)
 		return err;
 
@@ -2421,10 +2425,7 @@
 		if (skb_queue_len(&sd->input_pkt_queue)) {
 enqueue:
 			__skb_queue_tail(&sd->input_pkt_queue, skb);
-#ifdef CONFIG_RPS
-			*qtail = sd->input_queue_head +
-					skb_queue_len(&sd->input_pkt_queue);
-#endif
+			input_queue_tail_incr_save(sd, qtail);
 			rps_unlock(sd);
 			local_irq_restore(flags);
 			return NET_RX_SUCCESS;
@@ -2959,7 +2960,7 @@
 		if (skb->dev == dev) {
 			__skb_unlink(skb, &sd->input_pkt_queue);
 			kfree_skb(skb);
-			input_queue_head_add(sd, 1);
+			input_queue_head_incr(sd);
 		}
 	}
 	rps_unlock(sd);
@@ -2968,6 +2969,7 @@
 		if (skb->dev == dev) {
 			__skb_unlink(skb, &sd->process_queue);
 			kfree_skb(skb);
+			input_queue_head_incr(sd);
 		}
 	}
 }
@@ -3323,18 +3325,20 @@
 		while ((skb = __skb_dequeue(&sd->process_queue))) {
 			local_irq_enable();
 			__netif_receive_skb(skb);
-			if (++work >= quota)
-				return work;
 			local_irq_disable();
+			input_queue_head_incr(sd);
+			if (++work >= quota) {
+				local_irq_enable();
+				return work;
+			}
 		}
 
 		rps_lock(sd);
 		qlen = skb_queue_len(&sd->input_pkt_queue);
-		if (qlen) {
-			input_queue_head_add(sd, qlen);
+		if (qlen)
 			skb_queue_splice_tail_init(&sd->input_pkt_queue,
 						   &sd->process_queue);
-		}
+
 		if (qlen < quota - work) {
 			/*
 			 * Inline a custom version of __napi_complete().
@@ -4960,7 +4964,7 @@
 		}
 	}
 
-	ret = dev_get_valid_name(net, dev->name, dev->name, 0);
+	ret = dev_get_valid_name(dev, dev->name, 0);
 	if (ret)
 		goto err_uninit;
 
@@ -5558,7 +5562,7 @@
 		/* We get here if we can't use the current device name */
 		if (!pat)
 			goto out;
-		if (dev_get_valid_name(net, pat, dev->name, 1))
+		if (dev_get_valid_name(dev, pat, 1))
 			goto out;
 	}
 
@@ -5661,12 +5665,14 @@
 	local_irq_enable();
 
 	/* Process offline CPU's input_pkt_queue */
+	while ((skb = __skb_dequeue(&oldsd->process_queue))) {
+		netif_rx(skb);
+		input_queue_head_incr(oldsd);
+	}
 	while ((skb = __skb_dequeue(&oldsd->input_pkt_queue))) {
 		netif_rx(skb);
-		input_queue_head_add(oldsd, 1);
+		input_queue_head_incr(oldsd);
 	}
-	while ((skb = __skb_dequeue(&oldsd->process_queue)))
-		netif_rx(skb);
 
 	return NOTIFY_OK;
 }
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index cf208d8..ad41529 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -172,12 +172,12 @@
 	return;
 }
 
-static void trace_kfree_skb_hit(struct sk_buff *skb, void *location)
+static void trace_kfree_skb_hit(void *ignore, struct sk_buff *skb, void *location)
 {
 	trace_drop_common(skb, location);
 }
 
-static void trace_napi_poll_hit(struct napi_struct *napi)
+static void trace_napi_poll_hit(void *ignore, struct napi_struct *napi)
 {
 	struct dm_hw_stat_delta *new_stat;
 
@@ -225,12 +225,12 @@
 
 	switch (state) {
 	case TRACE_ON:
-		rc |= register_trace_kfree_skb(trace_kfree_skb_hit);
-		rc |= register_trace_napi_poll(trace_napi_poll_hit);
+		rc |= register_trace_kfree_skb(trace_kfree_skb_hit, NULL);
+		rc |= register_trace_napi_poll(trace_napi_poll_hit, NULL);
 		break;
 	case TRACE_OFF:
-		rc |= unregister_trace_kfree_skb(trace_kfree_skb_hit);
-		rc |= unregister_trace_napi_poll(trace_napi_poll_hit);
+		rc |= unregister_trace_kfree_skb(trace_kfree_skb_hit, NULL);
+		rc |= unregister_trace_napi_poll(trace_napi_poll_hit, NULL);
 
 		tracepoint_synchronize_unregister();
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index bff3790..6ba1c0e 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -934,6 +934,7 @@
 				kfree_skb(buff);
 				NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards);
 			}
+			skb_dst_force(skb);
 			__skb_queue_tail(&neigh->arp_queue, skb);
 		}
 		rc = 1;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index e4b9870..1a2af24 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -650,11 +650,12 @@
 	if (dev->dev.parent && dev_is_pci(dev->dev.parent)) {
 
 		int num_vfs = dev_num_vf(dev->dev.parent);
-		size_t size = nlmsg_total_size(sizeof(struct nlattr));
-		size += nlmsg_total_size(num_vfs * sizeof(struct nlattr));
-		size += num_vfs * (sizeof(struct ifla_vf_mac) +
-				  sizeof(struct ifla_vf_vlan) +
-				  sizeof(struct ifla_vf_tx_rate));
+		size_t size = nla_total_size(sizeof(struct nlattr));
+		size += nla_total_size(num_vfs * sizeof(struct nlattr));
+		size += num_vfs *
+			(nla_total_size(sizeof(struct ifla_vf_mac)) +
+			 nla_total_size(sizeof(struct ifla_vf_vlan)) +
+			 nla_total_size(sizeof(struct ifla_vf_tx_rate)));
 		return size;
 	} else
 		return 0;
@@ -722,14 +723,13 @@
 
 	for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) {
 		vf_port = nla_nest_start(skb, IFLA_VF_PORT);
-		if (!vf_port) {
-			nla_nest_cancel(skb, vf_ports);
-			return -EMSGSIZE;
-		}
+		if (!vf_port)
+			goto nla_put_failure;
 		NLA_PUT_U32(skb, IFLA_PORT_VF, vf);
 		err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb);
+		if (err == -EMSGSIZE)
+			goto nla_put_failure;
 		if (err) {
-nla_put_failure:
 			nla_nest_cancel(skb, vf_port);
 			continue;
 		}
@@ -739,6 +739,10 @@
 	nla_nest_end(skb, vf_ports);
 
 	return 0;
+
+nla_put_failure:
+	nla_nest_cancel(skb, vf_ports);
+	return -EMSGSIZE;
 }
 
 static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev)
@@ -753,7 +757,7 @@
 	err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb);
 	if (err) {
 		nla_nest_cancel(skb, port_self);
-		return err;
+		return (err == -EMSGSIZE) ? err : 0;
 	}
 
 	nla_nest_end(skb, port_self);
@@ -1199,8 +1203,10 @@
 		struct nlattr *attr;
 		int rem;
 		nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
-			if (nla_type(attr) != IFLA_VF_INFO)
+			if (nla_type(attr) != IFLA_VF_INFO) {
+				err = -EINVAL;
 				goto errout;
+			}
 			err = do_setvfinfo(dev, attr);
 			if (err < 0)
 				goto errout;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 66d9c41..f8abf68 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2722,6 +2722,7 @@
 	*NAPI_GRO_CB(nskb) = *NAPI_GRO_CB(p);
 	skb_shinfo(nskb)->frag_list = p;
 	skb_shinfo(nskb)->gso_size = pinfo->gso_size;
+	pinfo->gso_size = 0;
 	skb_header_release(p);
 	nskb->prev = p;
 
diff --git a/net/core/sock.c b/net/core/sock.c
index bf88a16..2cf7f9f 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -123,6 +123,7 @@
 #include <linux/net_tstamp.h>
 #include <net/xfrm.h>
 #include <linux/ipsec.h>
+#include <net/cls_cgroup.h>
 
 #include <linux/filter.h>
 
@@ -217,6 +218,11 @@
 int sysctl_optmem_max __read_mostly = sizeof(unsigned long)*(2*UIO_MAXIOV+512);
 EXPORT_SYMBOL(sysctl_optmem_max);
 
+#if defined(CONFIG_CGROUPS) && !defined(CONFIG_NET_CLS_CGROUP)
+int net_cls_subsys_id = -1;
+EXPORT_SYMBOL_GPL(net_cls_subsys_id);
+#endif
+
 static int sock_set_timeout(long *timeo_p, char __user *optval, int optlen)
 {
 	struct timeval tv;
@@ -1050,6 +1056,17 @@
 	module_put(owner);
 }
 
+#ifdef CONFIG_CGROUPS
+void sock_update_classid(struct sock *sk)
+{
+	u32 classid = task_cls_classid(current);
+
+	if (classid && classid != sk->sk_classid)
+		sk->sk_classid = classid;
+}
+EXPORT_SYMBOL(sock_update_classid);
+#endif
+
 /**
  *	sk_alloc - All socket objects are allocated here
  *	@net: the applicable net namespace
@@ -1073,6 +1090,8 @@
 		sock_lock_init(sk);
 		sock_net_set(sk, get_net(net));
 		atomic_set(&sk->sk_wmem_alloc, 1);
+
+		sock_update_classid(sk);
 	}
 
 	return sk;
@@ -1988,6 +2007,39 @@
 }
 EXPORT_SYMBOL(release_sock);
 
+/**
+ * lock_sock_fast - fast version of lock_sock
+ * @sk: socket
+ *
+ * This version should be used for very small section, where process wont block
+ * return false if fast path is taken
+ *   sk_lock.slock locked, owned = 0, BH disabled
+ * return true if slow path is taken
+ *   sk_lock.slock unlocked, owned = 1, BH enabled
+ */
+bool lock_sock_fast(struct sock *sk)
+{
+	might_sleep();
+	spin_lock_bh(&sk->sk_lock.slock);
+
+	if (!sk->sk_lock.owned)
+		/*
+		 * Note : We must disable BH
+		 */
+		return false;
+
+	__lock_sock(sk);
+	sk->sk_lock.owned = 1;
+	spin_unlock(&sk->sk_lock.slock);
+	/*
+	 * The sk_lock has mutex_lock() semantics here:
+	 */
+	mutex_acquire(&sk->sk_lock.dep_map, 0, 0, _RET_IP_);
+	local_bh_enable();
+	return true;
+}
+EXPORT_SYMBOL(lock_sock_fast);
+
 int sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
 {
 	struct timeval tv;
diff --git a/net/dccp/input.c b/net/dccp/input.c
index 58f7bc1..6beb6a7 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -124,9 +124,9 @@
 	return queued;
 }
 
-static u8 dccp_reset_code_convert(const u8 code)
+static u16 dccp_reset_code_convert(const u8 code)
 {
-	const u8 error_code[] = {
+	const u16 error_code[] = {
 	[DCCP_RESET_CODE_CLOSED]	     = 0,	/* normal termination */
 	[DCCP_RESET_CODE_UNSPECIFIED]	     = 0,	/* nothing known */
 	[DCCP_RESET_CODE_ABORTED]	     = ECONNRESET,
@@ -148,7 +148,7 @@
 
 static void dccp_rcv_reset(struct sock *sk, struct sk_buff *skb)
 {
-	u8 err = dccp_reset_code_convert(dccp_hdr_reset(skb)->dccph_reset_code);
+	u16 err = dccp_reset_code_convert(dccp_hdr_reset(skb)->dccph_reset_code);
 
 	sk->sk_err = err;
 
diff --git a/net/ieee802154/wpan-class.c b/net/ieee802154/wpan-class.c
index 3d803a1..1627ef2 100644
--- a/net/ieee802154/wpan-class.c
+++ b/net/ieee802154/wpan-class.c
@@ -147,13 +147,15 @@
 	struct wpan_phy *phy = kzalloc(sizeof(*phy) + priv_size,
 			GFP_KERNEL);
 
+	if (!phy)
+		goto out;
 	mutex_lock(&wpan_phy_mutex);
 	phy->idx = wpan_phy_idx++;
 	if (unlikely(!wpan_phy_idx_valid(phy->idx))) {
 		wpan_phy_idx--;
 		mutex_unlock(&wpan_phy_mutex);
 		kfree(phy);
-		return NULL;
+		goto out;
 	}
 	mutex_unlock(&wpan_phy_mutex);
 
@@ -168,6 +170,9 @@
 	phy->current_page = 0; /* for compatibility */
 
 	return phy;
+
+out:
+	return NULL;
 }
 EXPORT_SYMBOL(wpan_phy_alloc);
 
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 4588910..856123f 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1911,7 +1911,7 @@
 	struct rtattr *mp_head;
 
 	/* If cache is unresolved, don't try to parse IIF and OIF */
-	if (c->mfc_parent > MAXVIFS)
+	if (c->mfc_parent >= MAXVIFS)
 		return -ENOENT;
 
 	if (VIF_EXISTS(mrt, c->mfc_parent))
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index baeec29..5858574 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1063,10 +1063,11 @@
 	spin_unlock_bh(&rcvq->lock);
 
 	if (!skb_queue_empty(&list_kill)) {
-		lock_sock_bh(sk);
+		bool slow = lock_sock_fast(sk);
+
 		__skb_queue_purge(&list_kill);
 		sk_mem_reclaim_partial(sk);
-		unlock_sock_bh(sk);
+		unlock_sock_fast(sk, slow);
 	}
 	return res;
 }
@@ -1123,6 +1124,7 @@
 	int peeked;
 	int err;
 	int is_udplite = IS_UDPLITE(sk);
+	bool slow;
 
 	/*
 	 *	Check any passed addresses
@@ -1197,10 +1199,10 @@
 	return err;
 
 csum_copy_err:
-	lock_sock_bh(sk);
+	slow = lock_sock_fast(sk);
 	if (!skb_kill_datagram(sk, skb, flags))
 		UDP_INC_STATS_USER(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
-	unlock_sock_bh(sk);
+	unlock_sock_fast(sk, slow);
 
 	if (noblock)
 		return -EAGAIN;
@@ -1625,9 +1627,9 @@
 
 void udp_destroy_sock(struct sock *sk)
 {
-	lock_sock_bh(sk);
+	bool slow = lock_sock_fast(sk);
 	udp_flush_pending_frames(sk);
-	unlock_sock_bh(sk);
+	unlock_sock_fast(sk, slow);
 }
 
 /*
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index cd963f6..89425af 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -507,7 +507,7 @@
 	if (mtu < IPV6_MIN_MTU)
 		mtu = IPV6_MIN_MTU;
 
-	if (skb->len > mtu) {
+	if (skb->len > mtu && !skb_is_gso(skb)) {
 		/* Again, force OUTPUT device used as source address */
 		skb->dev = dst->dev;
 		icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index bd9e7d3..073071f 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -2017,7 +2017,7 @@
 	struct rtattr *mp_head;
 
 	/* If cache is unresolved, don't try to parse IIF and OIF */
-	if (c->mf6c_parent > MAXMIFS)
+	if (c->mf6c_parent >= MAXMIFS)
 		return -ENOENT;
 
 	if (MIF_EXISTS(mrt, c->mf6c_parent))
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 3d7a2c0..87be586 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -328,6 +328,7 @@
 	int err;
 	int is_udplite = IS_UDPLITE(sk);
 	int is_udp4;
+	bool slow;
 
 	if (addr_len)
 		*addr_len=sizeof(struct sockaddr_in6);
@@ -424,7 +425,7 @@
 	return err;
 
 csum_copy_err:
-	lock_sock_bh(sk);
+	slow = lock_sock_fast(sk);
 	if (!skb_kill_datagram(sk, skb, flags)) {
 		if (is_udp4)
 			UDP_INC_STATS_USER(sock_net(sk),
@@ -433,7 +434,7 @@
 			UDP6_INC_STATS_USER(sock_net(sk),
 					UDP_MIB_INERRORS, is_udplite);
 	}
-	unlock_sock_bh(sk);
+	unlock_sock_fast(sk, slow);
 
 	if (flags & MSG_DONTWAIT)
 		return -EAGAIN;
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index c8b4599..9637e45 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -1619,7 +1619,7 @@
 save_message:
 	save_msg = kzalloc(sizeof(struct sock_msg_q), GFP_ATOMIC | GFP_DMA);
 	if (!save_msg)
-		return;
+		goto out_unlock;
 	save_msg->path = path;
 	save_msg->msg = *msg;
 
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index fd8b283..f28ad2cc 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -632,13 +632,14 @@
 		iucv_irq_data[cpu] = kmalloc_node(sizeof(struct iucv_irq_data),
 					GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
 		if (!iucv_irq_data[cpu])
-			return NOTIFY_BAD;
+			return notifier_from_errno(-ENOMEM);
+
 		iucv_param[cpu] = kmalloc_node(sizeof(union iucv_param),
 				     GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
 		if (!iucv_param[cpu]) {
 			kfree(iucv_irq_data[cpu]);
 			iucv_irq_data[cpu] = NULL;
-			return NOTIFY_BAD;
+			return notifier_from_errno(-ENOMEM);
 		}
 		iucv_param_irq[cpu] = kmalloc_node(sizeof(union iucv_param),
 					GFP_KERNEL|GFP_DMA, cpu_to_node(cpu));
@@ -647,7 +648,7 @@
 			iucv_param[cpu] = NULL;
 			kfree(iucv_irq_data[cpu]);
 			iucv_irq_data[cpu] = NULL;
-			return NOTIFY_BAD;
+			return notifier_from_errno(-ENOMEM);
 		}
 		break;
 	case CPU_UP_CANCELED:
@@ -677,7 +678,7 @@
 		cpu_clear(cpu, cpumask);
 		if (cpus_empty(cpumask))
 			/* Can't offline last IUCV enabled cpu. */
-			return NOTIFY_BAD;
+			return notifier_from_errno(-EINVAL);
 		smp_call_function_single(cpu, iucv_retrieve_cpu, NULL, 1);
 		if (cpus_empty(iucv_irq_cpumask))
 			smp_call_function_single(first_cpu(iucv_buffer_cpumask),
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 48a5e80..df9d455 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -145,7 +145,7 @@
 /**
  * struct sta_ampdu_mlme - STA aggregation information.
  *
- * @tid_state_rx: TID's state in Rx session state machine.
+ * @tid_active_rx: TID's state in Rx session state machine.
  * @tid_rx: aggregation info for Rx per TID
  * @tid_state_tx: TID's state in Tx session state machine.
  * @tid_tx: aggregation info for Tx per TID
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index b83c530..eeeb8bc 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -424,6 +424,16 @@
 
 	spin_lock_bh(&nf_conntrack_lock);
 
+	/* We have to check the DYING flag inside the lock to prevent
+	   a race against nf_ct_get_next_corpse() possibly called from
+	   user context, else we insert an already 'dead' hash, blocking
+	   further use of that particular connection -JM */
+
+	if (unlikely(nf_ct_is_dying(ct))) {
+		spin_unlock_bh(&nf_conntrack_lock);
+		return NF_ACCEPT;
+	}
+
 	/* See if there's one in the list already, including reverse:
 	   NAT could have grabbed it without realizing, since we're
 	   not in the hash.  If there is, we lost race. */
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index b20f427..53d8922 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1393,10 +1393,8 @@
 
 	nf_ct_refresh(ct, skb, sip_timeout * HZ);
 
-	if (skb_is_nonlinear(skb)) {
-		pr_debug("Copy of skbuff not supported yet.\n");
-		return NF_ACCEPT;
-	}
+	if (unlikely(skb_linearize(skb)))
+		return NF_DROP;
 
 	dptr = skb->data + dataoff;
 	datalen = skb->len - dataoff;
@@ -1455,10 +1453,8 @@
 
 	nf_ct_refresh(ct, skb, sip_timeout * HZ);
 
-	if (skb_is_nonlinear(skb)) {
-		pr_debug("Copy of skbuff not supported yet.\n");
-		return NF_ACCEPT;
-	}
+	if (unlikely(skb_linearize(skb)))
+		return NF_DROP;
 
 	dptr = skb->data + dataoff;
 	datalen = skb->len - dataoff;
diff --git a/net/netfilter/xt_TEE.c b/net/netfilter/xt_TEE.c
index d7920d9f..859d9fd 100644
--- a/net/netfilter/xt_TEE.c
+++ b/net/netfilter/xt_TEE.c
@@ -76,7 +76,7 @@
 	if (ip_route_output_key(net, &rt, &fl) != 0)
 		return false;
 
-	dst_release(skb_dst(skb));
+	skb_dst_drop(skb);
 	skb_dst_set(skb, &rt->u.dst);
 	skb->dev      = rt->u.dst.dev;
 	skb->protocol = htons(ETH_P_IP);
@@ -157,7 +157,7 @@
 	if (dst == NULL)
 		return false;
 
-	dst_release(skb_dst(skb));
+	skb_dst_drop(skb);
 	skb_dst_set(skb, dst);
 	skb->dev      = dst->dev;
 	skb->protocol = htons(ETH_P_IPV6);
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index af4d38b..7b048a3 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -626,6 +626,7 @@
 	struct pep_sock *pn = pep_sk(sk);
 	int ifindex = 0;
 
+	sock_hold(sk); /* keep a reference after sk_common_release() */
 	sk_common_release(sk);
 
 	lock_sock(sk);
@@ -644,6 +645,7 @@
 
 	if (ifindex)
 		gprs_detach(sk);
+	sock_put(sk);
 }
 
 static int pep_wait_connreq(struct sock *sk, int noblock)
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 2211803..78ef2c5 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -16,14 +16,11 @@
 #include <linux/errno.h>
 #include <linux/skbuff.h>
 #include <linux/cgroup.h>
+#include <linux/rcupdate.h>
 #include <net/rtnetlink.h>
 #include <net/pkt_cls.h>
-
-struct cgroup_cls_state
-{
-	struct cgroup_subsys_state css;
-	u32 classid;
-};
+#include <net/sock.h>
+#include <net/cls_cgroup.h>
 
 static struct cgroup_subsys_state *cgrp_create(struct cgroup_subsys *ss,
 					       struct cgroup *cgrp);
@@ -112,6 +109,10 @@
 	struct cls_cgroup_head *head = tp->root;
 	u32 classid;
 
+	rcu_read_lock();
+	classid = task_cls_state(current)->classid;
+	rcu_read_unlock();
+
 	/*
 	 * Due to the nature of the classifier it is required to ignore all
 	 * packets originating from softirq context as accessing `current'
@@ -122,12 +123,12 @@
 	 * calls by looking at the number of nested bh disable calls because
 	 * softirqs always disables bh.
 	 */
-	if (softirq_count() != SOFTIRQ_OFFSET)
-		return -1;
-
-	rcu_read_lock();
-	classid = task_cls_state(current)->classid;
-	rcu_read_unlock();
+	if (softirq_count() != SOFTIRQ_OFFSET) {
+		/* If there is an sk_classid we'll use that. */
+		if (!skb->sk)
+			return -1;
+		classid = skb->sk->sk_classid;
+	}
 
 	if (!classid)
 		return -1;
@@ -289,18 +290,35 @@
 
 static int __init init_cgroup_cls(void)
 {
-	int ret = register_tcf_proto_ops(&cls_cgroup_ops);
-	if (ret)
-		return ret;
+	int ret;
+
 	ret = cgroup_load_subsys(&net_cls_subsys);
 	if (ret)
-		unregister_tcf_proto_ops(&cls_cgroup_ops);
+		goto out;
+
+#ifndef CONFIG_NET_CLS_CGROUP
+	/* We can't use rcu_assign_pointer because this is an int. */
+	smp_wmb();
+	net_cls_subsys_id = net_cls_subsys.subsys_id;
+#endif
+
+	ret = register_tcf_proto_ops(&cls_cgroup_ops);
+	if (ret)
+		cgroup_unload_subsys(&net_cls_subsys);
+
+out:
 	return ret;
 }
 
 static void __exit exit_cgroup_cls(void)
 {
 	unregister_tcf_proto_ops(&cls_cgroup_ops);
+
+#ifndef CONFIG_NET_CLS_CGROUP
+	net_cls_subsys_id = -1;
+	synchronize_rcu();
+#endif
+
 	cgroup_unload_subsys(&net_cls_subsys);
 }
 
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index fe35c1f..b9e8c3b 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1195,6 +1195,11 @@
 	return -1;
 }
 
+static bool tc_qdisc_dump_ignore(struct Qdisc *q)
+{
+	return (q->flags & TCQ_F_BUILTIN) ? true : false;
+}
+
 static int qdisc_notify(struct net *net, struct sk_buff *oskb,
 			struct nlmsghdr *n, u32 clid,
 			struct Qdisc *old, struct Qdisc *new)
@@ -1206,11 +1211,11 @@
 	if (!skb)
 		return -ENOBUFS;
 
-	if (old && old->handle) {
+	if (old && !tc_qdisc_dump_ignore(old)) {
 		if (tc_fill_qdisc(skb, old, clid, pid, n->nlmsg_seq, 0, RTM_DELQDISC) < 0)
 			goto err_out;
 	}
-	if (new) {
+	if (new && !tc_qdisc_dump_ignore(new)) {
 		if (tc_fill_qdisc(skb, new, clid, pid, n->nlmsg_seq, old ? NLM_F_REPLACE : 0, RTM_NEWQDISC) < 0)
 			goto err_out;
 	}
@@ -1223,11 +1228,6 @@
 	return -EINVAL;
 }
 
-static bool tc_qdisc_dump_ignore(struct Qdisc *q)
-{
-	return (q->flags & TCQ_F_BUILTIN) ? true : false;
-}
-
 static int tc_dump_qdisc_root(struct Qdisc *root, struct sk_buff *skb,
 			      struct netlink_callback *cb,
 			      int *q_idx_p, int s_q_idx)
diff --git a/net/socket.c b/net/socket.c
index f9f7d08..367d547 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -94,6 +94,7 @@
 
 #include <net/compat.h>
 #include <net/wext.h>
+#include <net/cls_cgroup.h>
 
 #include <net/sock.h>
 #include <linux/netfilter.h>
@@ -558,6 +559,8 @@
 	struct sock_iocb *si = kiocb_to_siocb(iocb);
 	int err;
 
+	sock_update_classid(sock->sk);
+
 	si->sock = sock;
 	si->scm = NULL;
 	si->msg = msg;
@@ -684,6 +687,8 @@
 {
 	struct sock_iocb *si = kiocb_to_siocb(iocb);
 
+	sock_update_classid(sock->sk);
+
 	si->sock = sock;
 	si->scm = NULL;
 	si->msg = msg;
@@ -777,6 +782,8 @@
 	if (unlikely(!sock->ops->splice_read))
 		return -EINVAL;
 
+	sock_update_classid(sock->sk);
+
 	return sock->ops->splice_read(sock, ppos, pipe, len, flags);
 }
 
@@ -3069,6 +3076,8 @@
 int kernel_sendpage(struct socket *sock, struct page *page, int offset,
 		    size_t size, int flags)
 {
+	sock_update_classid(sock->sk);
+
 	if (sock->ops->sendpage)
 		return sock->ops->sendpage(sock, page, offset, size, flags);
 
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index b7cd8cc..2a96751 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2293,6 +2293,7 @@
 	struct sockaddr *addr = args->dstaddr;
 	struct rpc_xprt *xprt;
 	struct sock_xprt *transport;
+	struct rpc_xprt *ret;
 
 	xprt = xs_setup_xprt(args, xprt_udp_slot_table_entries);
 	if (IS_ERR(xprt))
@@ -2330,8 +2331,8 @@
 		xs_format_peer_addresses(xprt, "udp", RPCBIND_NETID_UDP6);
 		break;
 	default:
-		kfree(xprt);
-		return ERR_PTR(-EAFNOSUPPORT);
+		ret = ERR_PTR(-EAFNOSUPPORT);
+		goto out_err;
 	}
 
 	if (xprt_bound(xprt))
@@ -2346,10 +2347,11 @@
 
 	if (try_module_get(THIS_MODULE))
 		return xprt;
-
+	ret = ERR_PTR(-EINVAL);
+out_err:
 	kfree(xprt->slot);
 	kfree(xprt);
-	return ERR_PTR(-EINVAL);
+	return ret;
 }
 
 static const struct rpc_timeout xs_tcp_default_timeout = {
@@ -2368,6 +2370,7 @@
 	struct sockaddr *addr = args->dstaddr;
 	struct rpc_xprt *xprt;
 	struct sock_xprt *transport;
+	struct rpc_xprt *ret;
 
 	xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries);
 	if (IS_ERR(xprt))
@@ -2403,8 +2406,8 @@
 		xs_format_peer_addresses(xprt, "tcp", RPCBIND_NETID_TCP6);
 		break;
 	default:
-		kfree(xprt);
-		return ERR_PTR(-EAFNOSUPPORT);
+		ret = ERR_PTR(-EAFNOSUPPORT);
+		goto out_err;
 	}
 
 	if (xprt_bound(xprt))
@@ -2420,10 +2423,11 @@
 
 	if (try_module_get(THIS_MODULE))
 		return xprt;
-
+	ret = ERR_PTR(-EINVAL);
+out_err:
 	kfree(xprt->slot);
 	kfree(xprt);
-	return ERR_PTR(-EINVAL);
+	return ret;
 }
 
 /**
@@ -2437,6 +2441,7 @@
 	struct rpc_xprt *xprt;
 	struct sock_xprt *transport;
 	struct svc_sock *bc_sock;
+	struct rpc_xprt *ret;
 
 	xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries);
 	if (IS_ERR(xprt))
@@ -2476,8 +2481,8 @@
 				   RPCBIND_NETID_TCP6);
 		break;
 	default:
-		kfree(xprt);
-		return ERR_PTR(-EAFNOSUPPORT);
+		ret = ERR_PTR(-EAFNOSUPPORT);
+		goto out_err;
 	}
 
 	if (xprt_bound(xprt))
@@ -2499,9 +2504,11 @@
 
 	if (try_module_get(THIS_MODULE))
 		return xprt;
+	ret = ERR_PTR(-EINVAL);
+out_err:
 	kfree(xprt->slot);
 	kfree(xprt);
-	return ERR_PTR(-EINVAL);
+	return ret;
 }
 
 static struct xprt_class	xs_udp_transport = {
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index d92d088..b01a6f6 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -50,7 +50,7 @@
 	struct ieee80211_channel *chan;
 	int result;
 
-	if (wdev->iftype == NL80211_IFTYPE_MONITOR)
+	if (wdev && wdev->iftype == NL80211_IFTYPE_MONITOR)
 		wdev = NULL;
 
 	if (wdev) {
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index aaa1aad..db71150 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4443,9 +4443,10 @@
 		if (channel_type != NL80211_CHAN_NO_HT &&
 		    channel_type != NL80211_CHAN_HT20 &&
 		    channel_type != NL80211_CHAN_HT40PLUS &&
-		    channel_type != NL80211_CHAN_HT40MINUS)
+		    channel_type != NL80211_CHAN_HT40MINUS) {
 			err = -EINVAL;
 			goto out;
+		}
 	}
 
 	freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
@@ -4717,9 +4718,10 @@
 		if (channel_type != NL80211_CHAN_NO_HT &&
 		    channel_type != NL80211_CHAN_HT20 &&
 		    channel_type != NL80211_CHAN_HT40PLUS &&
-		    channel_type != NL80211_CHAN_HT40MINUS)
+		    channel_type != NL80211_CHAN_HT40MINUS) {
 			err = -EINVAL;
 			goto out;
+		}
 	}
 
 	freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index a026c6d..58401d2 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -515,7 +515,7 @@
 
 	privsz = wiphy->bss_priv_size;
 
-	if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC &&
+	if (WARN_ON(wiphy->signal_type == CFG80211_SIGNAL_TYPE_UNSPEC &&
 			(signal < 0 || signal > 100)))
 		return NULL;
 
@@ -571,7 +571,7 @@
 				      u.probe_resp.variable);
 	size_t privsz = wiphy->bss_priv_size;
 
-	if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC &&
+	if (WARN_ON(wiphy->signal_type == CFG80211_SIGNAL_TYPE_UNSPEC &&
 	            (signal < 0 || signal > 100)))
 		return NULL;
 
diff --git a/samples/tracepoints/tp-samples-trace.h b/samples/tracepoints/tp-samples-trace.h
index dffdc49..4d46be9 100644
--- a/samples/tracepoints/tp-samples-trace.h
+++ b/samples/tracepoints/tp-samples-trace.h
@@ -7,7 +7,5 @@
 DECLARE_TRACE(subsys_event,
 	TP_PROTO(struct inode *inode, struct file *file),
 	TP_ARGS(inode, file));
-DECLARE_TRACE(subsys_eventb,
-	TP_PROTO(void),
-	TP_ARGS());
+DECLARE_TRACE_NOARGS(subsys_eventb);
 #endif
diff --git a/samples/tracepoints/tracepoint-probe-sample.c b/samples/tracepoints/tracepoint-probe-sample.c
index 9e60eb6..744c0b9 100644
--- a/samples/tracepoints/tracepoint-probe-sample.c
+++ b/samples/tracepoints/tracepoint-probe-sample.c
@@ -13,7 +13,8 @@
  * Here the caller only guarantees locking for struct file and struct inode.
  * Locking must therefore be done in the probe to use the dentry.
  */
-static void probe_subsys_event(struct inode *inode, struct file *file)
+static void probe_subsys_event(void *ignore,
+			       struct inode *inode, struct file *file)
 {
 	path_get(&file->f_path);
 	dget(file->f_path.dentry);
@@ -23,7 +24,7 @@
 	path_put(&file->f_path);
 }
 
-static void probe_subsys_eventb(void)
+static void probe_subsys_eventb(void *ignore)
 {
 	printk(KERN_INFO "Event B is encountered\n");
 }
@@ -32,9 +33,9 @@
 {
 	int ret;
 
-	ret = register_trace_subsys_event(probe_subsys_event);
+	ret = register_trace_subsys_event(probe_subsys_event, NULL);
 	WARN_ON(ret);
-	ret = register_trace_subsys_eventb(probe_subsys_eventb);
+	ret = register_trace_subsys_eventb(probe_subsys_eventb, NULL);
 	WARN_ON(ret);
 
 	return 0;
@@ -44,8 +45,8 @@
 
 static void __exit tp_sample_trace_exit(void)
 {
-	unregister_trace_subsys_eventb(probe_subsys_eventb);
-	unregister_trace_subsys_event(probe_subsys_event);
+	unregister_trace_subsys_eventb(probe_subsys_eventb, NULL);
+	unregister_trace_subsys_event(probe_subsys_event, NULL);
 	tracepoint_synchronize_unregister();
 }
 
diff --git a/samples/tracepoints/tracepoint-probe-sample2.c b/samples/tracepoints/tracepoint-probe-sample2.c
index be2a960..9fcf990 100644
--- a/samples/tracepoints/tracepoint-probe-sample2.c
+++ b/samples/tracepoints/tracepoint-probe-sample2.c
@@ -12,7 +12,8 @@
  * Here the caller only guarantees locking for struct file and struct inode.
  * Locking must therefore be done in the probe to use the dentry.
  */
-static void probe_subsys_event(struct inode *inode, struct file *file)
+static void probe_subsys_event(void *ignore,
+			       struct inode *inode, struct file *file)
 {
 	printk(KERN_INFO "Event is encountered with inode number %lu\n",
 		inode->i_ino);
@@ -22,7 +23,7 @@
 {
 	int ret;
 
-	ret = register_trace_subsys_event(probe_subsys_event);
+	ret = register_trace_subsys_event(probe_subsys_event, NULL);
 	WARN_ON(ret);
 
 	return 0;
@@ -32,7 +33,7 @@
 
 static void __exit tp_sample_trace_exit(void)
 {
-	unregister_trace_subsys_event(probe_subsys_event);
+	unregister_trace_subsys_event(probe_subsys_event, NULL);
 	tracepoint_synchronize_unregister();
 }
 
diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh
index 76af5f9..a932ae5 100644
--- a/scripts/gen_initramfs_list.sh
+++ b/scripts/gen_initramfs_list.sh
@@ -242,6 +242,7 @@
 		echo "$output_file" | grep -q "\.gz$" && compr="gzip -9 -f"
 		echo "$output_file" | grep -q "\.bz2$" && compr="bzip2 -9 -f"
 		echo "$output_file" | grep -q "\.lzma$" && compr="lzma -9 -f"
+		echo "$output_file" | grep -q "\.lzo$" && compr="lzop -9 -f"
 		echo "$output_file" | grep -q "\.cpio$" && compr="cat"
 		shift
 		;;
diff --git a/security/keys/internal.h b/security/keys/internal.h
index 5d4402a..38783dc 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -124,6 +124,7 @@
 extern int install_user_keyrings(void);
 extern int install_thread_keyring_to_cred(struct cred *);
 extern int install_process_keyring_to_cred(struct cred *);
+extern int install_session_keyring_to_cred(struct cred *, struct key *);
 
 extern struct key *request_key_and_link(struct key_type *type,
 					const char *description,
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 8f4dce1..13074b4 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1269,7 +1269,7 @@
 		goto not_permitted;
 
 	/* the parent must be single threaded */
-	if (atomic_read(&parent->signal->count) != 1)
+	if (!thread_group_empty(parent))
 		goto not_permitted;
 
 	/* the parent and the child must have different session keyrings or
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 20a38fe..6b8e4ff 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -216,8 +216,7 @@
 /*
  * install a session keyring directly to a credentials struct
  */
-static int install_session_keyring_to_cred(struct cred *cred,
-					   struct key *keyring)
+int install_session_keyring_to_cred(struct cred *cred, struct key *keyring)
 {
 	unsigned long flags;
 	struct key *old;
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index f656e9c..f5ec9ac 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -58,6 +58,38 @@
 }
 EXPORT_SYMBOL(complete_request_key);
 
+static int umh_keys_init(struct subprocess_info *info)
+{
+	struct cred *cred = (struct cred*)current_cred();
+	struct key *keyring = info->data;
+	/*
+	 * This is called in context of freshly forked kthread before
+	 * kernel_execve(), we can just change our ->session_keyring.
+	 */
+	return install_session_keyring_to_cred(cred, keyring);
+}
+
+static void umh_keys_cleanup(struct subprocess_info *info)
+{
+	struct key *keyring = info->data;
+	key_put(keyring);
+}
+
+static int call_usermodehelper_keys(char *path, char **argv, char **envp,
+			 struct key *session_keyring, enum umh_wait wait)
+{
+	gfp_t gfp_mask = (wait == UMH_NO_WAIT) ? GFP_ATOMIC : GFP_KERNEL;
+	struct subprocess_info *info =
+		call_usermodehelper_setup(path, argv, envp, gfp_mask);
+
+	if (!info)
+		return -ENOMEM;
+
+	call_usermodehelper_setfns(info, umh_keys_init, umh_keys_cleanup,
+					key_get(session_keyring));
+	return call_usermodehelper_exec(info, wait);
+}
+
 /*
  * request userspace finish the construction of a key
  * - execute "/sbin/request-key <op> <key> <uid> <gid> <keyring> <keyring> <keyring>"
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index a2ff861..e9d98be 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -345,7 +345,9 @@
 		new_hw_ptr = hw_base + pos;
 	}
       __delta:
-	delta = (new_hw_ptr - old_hw_ptr) % runtime->boundary;
+	delta = new_hw_ptr - old_hw_ptr;
+	if (delta < 0)
+		delta += runtime->boundary;
 	if (xrun_debug(substream, in_interrupt ?
 			XRUN_DEBUG_PERIODUPDATE : XRUN_DEBUG_HWPTRUPDATE)) {
 		char name[16];
@@ -439,8 +441,13 @@
 		snd_pcm_playback_silence(substream, new_hw_ptr);
 
 	if (in_interrupt) {
-		runtime->hw_ptr_interrupt = new_hw_ptr -
-				(new_hw_ptr % runtime->period_size);
+		delta = new_hw_ptr - runtime->hw_ptr_interrupt;
+		if (delta < 0)
+			delta += runtime->boundary;
+		delta -= (snd_pcm_uframes_t)delta % runtime->period_size;
+		runtime->hw_ptr_interrupt += delta;
+		if (runtime->hw_ptr_interrupt >= runtime->boundary)
+			runtime->hw_ptr_interrupt -= runtime->boundary;
 	}
 	runtime->hw_ptr_base = hw_base;
 	runtime->status->hw_ptr = new_hw_ptr;
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 644c2bb..303ac04 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -27,7 +27,6 @@
 #include <linux/pm_qos_params.h>
 #include <linux/uio.h>
 #include <linux/dma-mapping.h>
-#include <linux/math64.h>
 #include <sound/core.h>
 #include <sound/control.h>
 #include <sound/info.h>
@@ -370,38 +369,6 @@
 	return usecs;
 }
 
-static int calc_boundary(struct snd_pcm_runtime *runtime)
-{
-	u_int64_t boundary;
-
-	boundary = (u_int64_t)runtime->buffer_size *
-		   (u_int64_t)runtime->period_size;
-#if BITS_PER_LONG < 64
-	/* try to find lowest common multiple for buffer and period */
-	if (boundary > LONG_MAX - runtime->buffer_size) {
-		u_int32_t remainder = -1;
-		u_int32_t divident = runtime->buffer_size;
-		u_int32_t divisor = runtime->period_size;
-		while (remainder) {
-			remainder = divident % divisor;
-			if (remainder) {
-				divident = divisor;
-				divisor = remainder;
-			}
-		}
-		boundary = div_u64(boundary, divisor);
-		if (boundary > LONG_MAX - runtime->buffer_size)
-			return -ERANGE;
-	}
-#endif
-	if (boundary == 0)
-		return -ERANGE;
-	runtime->boundary = boundary;
-	while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size)
-		runtime->boundary *= 2;
-	return 0;
-}
-
 static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
 			     struct snd_pcm_hw_params *params)
 {
@@ -477,9 +444,9 @@
 	runtime->stop_threshold = runtime->buffer_size;
 	runtime->silence_threshold = 0;
 	runtime->silence_size = 0;
-	err = calc_boundary(runtime);
-	if (err < 0)
-		goto _error;
+	runtime->boundary = runtime->buffer_size;
+	while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size)
+		runtime->boundary *= 2;
 
 	snd_pcm_timer_resolution_change(substream);
 	runtime->status->state = SNDRV_PCM_STATE_SETUP;
diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c
index 3e763d6..446cf97 100644
--- a/sound/mips/au1x00.c
+++ b/sound/mips/au1x00.c
@@ -516,6 +516,7 @@
 			break;
 	if (i == 0x5000) {
 		printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n");
+		spin_unlock(&au1000->ac97_lock);
 		return 0;
 	}
 
diff --git a/sound/oss/dmasound/dmasound_atari.c b/sound/oss/dmasound/dmasound_atari.c
index 1f47741..13c2144 100644
--- a/sound/oss/dmasound/dmasound_atari.c
+++ b/sound/oss/dmasound/dmasound_atari.c
@@ -1277,7 +1277,7 @@
 		 * (almost) like on the TT.
 		 */
 		write_sq_ignore_int = 0;
-		return IRQ_HANDLED;
+		goto out;
 	}
 
 	if (!write_sq.active) {
@@ -1285,7 +1285,7 @@
 		 * the sq variables, so better don't do anything here.
 		 */
 		WAKE_UP(write_sq.sync_queue);
-		return IRQ_HANDLED;
+		goto out;
 	}
 
 	/* Probably ;) one frame is finished. Well, in fact it may be that a
@@ -1322,6 +1322,7 @@
 	/* We are not playing after AtaPlay(), so there
 	   is nothing to play any more. Wake up a process
 	   waiting for audio output to drain. */
+out:
 	spin_unlock(&dmasound.lock);
 	return IRQ_HANDLED;
 }
diff --git a/sound/pci/asihpi/hpi.h b/sound/pci/asihpi/hpi.h
index 99400de..0173bbe 100644
--- a/sound/pci/asihpi/hpi.h
+++ b/sound/pci/asihpi/hpi.h
@@ -50,7 +50,7 @@
 #define HPI_VER_RELEASE(v) ((int)(v & 0xFF))
 
 /* Use single digits for versions less that 10 to avoid octal. */
-#define HPI_VER HPI_VERSION_CONSTRUCTOR(4L, 3, 18)
+#define HPI_VER HPI_VERSION_CONSTRUCTOR(4L, 3, 25)
 
 /* Library version as documented in hpi-api-versions.txt */
 #define HPI_LIB_VER  HPI_VERSION_CONSTRUCTOR(9, 0, 0)
@@ -1632,6 +1632,12 @@
 u16 hpi_tuner_get_hd_radio_signal_quality(const struct hpi_hsubsys *ph_subsys,
 	u32 h_control, u32 *pquality);
 
+u16 hpi_tuner_get_hd_radio_signal_blend(const struct hpi_hsubsys *ph_subsys,
+	u32 h_control, u32 *pblend);
+
+u16 hpi_tuner_set_hd_radio_signal_blend(const struct hpi_hsubsys *ph_subsys,
+	u32 h_control, const u32 blend);
+
 /****************************/
 /* PADs control             */
 /****************************/
diff --git a/sound/pci/asihpi/hpi6000.c b/sound/pci/asihpi/hpi6000.c
index 839ecb2..12dab5e 100644
--- a/sound/pci/asihpi/hpi6000.c
+++ b/sound/pci/asihpi/hpi6000.c
@@ -691,9 +691,6 @@
 	case 0x6200:
 		boot_load_family = HPI_ADAPTER_FAMILY_ASI(0x6200);
 		break;
-	case 0x8800:
-		boot_load_family = HPI_ADAPTER_FAMILY_ASI(0x8800);
-		break;
 	default:
 		return HPI6000_ERROR_UNHANDLED_SUBSYS_ID;
 	}
@@ -1775,7 +1772,6 @@
 	u16 error = 0;
 	u16 dsp_index = 0;
 	u16 num_dsp = ((struct hpi_hw_obj *)pao->priv)->num_dsp;
-	hpios_dsplock_lock(pao);
 
 	if (num_dsp < 2)
 		dsp_index = 0;
@@ -1796,6 +1792,8 @@
 			}
 		}
 	}
+
+	hpios_dsplock_lock(pao);
 	error = hpi6000_message_response_sequence(pao, dsp_index, phm, phr);
 
 	/* maybe an error response */
diff --git a/sound/pci/asihpi/hpi6205.c b/sound/pci/asihpi/hpi6205.c
index 5e88c1f..e89991e 100644
--- a/sound/pci/asihpi/hpi6205.c
+++ b/sound/pci/asihpi/hpi6205.c
@@ -966,23 +966,16 @@
 	status = &interface->outstream_host_buffer_status[phm->obj_index];
 
 	if (phw->flag_outstream_just_reset[phm->obj_index]) {
-		/* Format can only change after reset. Must tell DSP. */
-		u16 function = phm->function;
-		phw->flag_outstream_just_reset[phm->obj_index] = 0;
-		phm->function = HPI_OSTREAM_SET_FORMAT;
-		hw_message(pao, phm, phr);	/* send the format to the DSP */
-		phm->function = function;
-		if (phr->error)
-			return;
-	}
-#if 1
-	if (phw->flag_outstream_just_reset[phm->obj_index]) {
 		/* First OutStremWrite() call following reset will write data to the
-		   adapter's buffers, reducing delay before stream can start
+		   adapter's buffers, reducing delay before stream can start. The DSP
+		   takes care of setting the stream data format using format information
+		   embedded in phm.
 		 */
 		int partial_write = 0;
 		unsigned int original_size = 0;
 
+		phw->flag_outstream_just_reset[phm->obj_index] = 0;
+
 		/* Send the first buffer to the DSP the old way. */
 		/* Limit size of first transfer - */
 		/* expect that this will not usually be triggered. */
@@ -1012,7 +1005,6 @@
 			original_size - HPI6205_SIZEOF_DATA;
 		phm->u.d.u.data.pb_data += HPI6205_SIZEOF_DATA;
 	}
-#endif
 
 	space_available = outstream_get_space_available(status);
 	if (space_available < (long)phm->u.d.u.data.data_size) {
@@ -1369,6 +1361,9 @@
 	case HPI_ADAPTER_FAMILY_ASI(0x6500):
 		firmware_id = HPI_ADAPTER_FAMILY_ASI(0x6600);
 		break;
+	case HPI_ADAPTER_FAMILY_ASI(0x8800):
+		firmware_id = HPI_ADAPTER_FAMILY_ASI(0x8900);
+		break;
 	}
 	boot_code_id[1] = firmware_id;
 
diff --git a/sound/pci/asihpi/hpi_internal.h b/sound/pci/asihpi/hpi_internal.h
index f1cd6f1..fdd0ce0 100644
--- a/sound/pci/asihpi/hpi_internal.h
+++ b/sound/pci/asihpi/hpi_internal.h
@@ -232,6 +232,8 @@
 #define HPI_TUNER_HDRADIO_SDK_VERSION   HPI_CTL_ATTR(TUNER, 13)
 /** HD Radio DSP firmware version. */
 #define HPI_TUNER_HDRADIO_DSP_VERSION   HPI_CTL_ATTR(TUNER, 14)
+/** HD Radio signal blend (force analog, or automatic). */
+#define HPI_TUNER_HDRADIO_BLEND         HPI_CTL_ATTR(TUNER, 15)
 
 /** \} */
 
@@ -478,8 +480,10 @@
 
 /** First 2 hex digits define the adapter family */
 #define HPI_ADAPTER_FAMILY_MASK         0xff00
+#define HPI_MODULE_FAMILY_MASK          0xfff0
 
 #define HPI_ADAPTER_FAMILY_ASI(f)   (f & HPI_ADAPTER_FAMILY_MASK)
+#define HPI_MODULE_FAMILY_ASI(f)   (f & HPI_MODULE_FAMILY_MASK)
 #define HPI_ADAPTER_ASI(f)   (f)
 
 /******************************************* message types */
@@ -970,6 +974,7 @@
 				u32 mode;
 				u32 value;
 			} mode;
+			u32 blend;
 		} tuner;
 	} u;
 };
diff --git a/sound/pci/asihpi/hpicmn.c b/sound/pci/asihpi/hpicmn.c
index 565102c..fcd6453 100644
--- a/sound/pci/asihpi/hpicmn.c
+++ b/sound/pci/asihpi/hpicmn.c
@@ -347,20 +347,15 @@
 			found = 0;
 		break;
 	case HPI_CONTROL_TUNER:
-		{
-			struct hpi_control_cache_single *pCT =
-				(struct hpi_control_cache_single *)pI;
-			if (phm->u.c.attribute == HPI_TUNER_FREQ)
-				phr->u.c.param1 = pCT->u.t.freq_ink_hz;
-			else if (phm->u.c.attribute == HPI_TUNER_BAND)
-				phr->u.c.param1 = pCT->u.t.band;
-			else if ((phm->u.c.attribute == HPI_TUNER_LEVEL)
-				&& (phm->u.c.param1 ==
-					HPI_TUNER_LEVEL_AVERAGE))
-				phr->u.c.param1 = pCT->u.t.level;
-			else
-				found = 0;
-		}
+		if (phm->u.c.attribute == HPI_TUNER_FREQ)
+			phr->u.c.param1 = pC->u.t.freq_ink_hz;
+		else if (phm->u.c.attribute == HPI_TUNER_BAND)
+			phr->u.c.param1 = pC->u.t.band;
+		else if ((phm->u.c.attribute == HPI_TUNER_LEVEL)
+			&& (phm->u.c.param1 == HPI_TUNER_LEVEL_AVERAGE))
+			phr->u.c.param1 = pC->u.t.level;
+		else
+			found = 0;
 		break;
 	case HPI_CONTROL_AESEBU_RECEIVER:
 		if (phm->u.c.attribute == HPI_AESEBURX_ERRORSTATUS)
@@ -503,6 +498,9 @@
 	struct hpi_control_cache_single *pC;
 	struct hpi_control_cache_info *pI;
 
+	if (phr->error)
+		return;
+
 	if (!find_control(phm, p_cache, &pI, &control_index))
 		return;
 
@@ -520,8 +518,6 @@
 		break;
 	case HPI_CONTROL_MULTIPLEXER:
 		/* mux does not return its setting on Set command. */
-		if (phr->error)
-			return;
 		if (phm->u.c.attribute == HPI_MULTIPLEXER_SOURCE) {
 			pC->u.x.source_node_type = (u16)phm->u.c.param1;
 			pC->u.x.source_node_index = (u16)phm->u.c.param2;
@@ -529,8 +525,6 @@
 		break;
 	case HPI_CONTROL_CHANNEL_MODE:
 		/* mode does not return its setting on Set command. */
-		if (phr->error)
-			return;
 		if (phm->u.c.attribute == HPI_CHANNEL_MODE_MODE)
 			pC->u.m.mode = (u16)phm->u.c.param1;
 		break;
@@ -545,20 +539,14 @@
 			pC->u.phantom_power.state = (u16)phm->u.c.param1;
 		break;
 	case HPI_CONTROL_AESEBU_TRANSMITTER:
-		if (phr->error)
-			return;
 		if (phm->u.c.attribute == HPI_AESEBUTX_FORMAT)
 			pC->u.aes3tx.format = phm->u.c.param1;
 		break;
 	case HPI_CONTROL_AESEBU_RECEIVER:
-		if (phr->error)
-			return;
 		if (phm->u.c.attribute == HPI_AESEBURX_FORMAT)
 			pC->u.aes3rx.source = phm->u.c.param1;
 		break;
 	case HPI_CONTROL_SAMPLECLOCK:
-		if (phr->error)
-			return;
 		if (phm->u.c.attribute == HPI_SAMPLECLOCK_SOURCE)
 			pC->u.clk.source = (u16)phm->u.c.param1;
 		else if (phm->u.c.attribute == HPI_SAMPLECLOCK_SOURCE_INDEX)
@@ -590,7 +578,7 @@
 
 void hpi_free_control_cache(struct hpi_control_cache *p_cache)
 {
-	if ((p_cache->init) && (p_cache->p_info)) {
+	if (p_cache->init) {
 		kfree(p_cache->p_info);
 		p_cache->p_info = NULL;
 		p_cache->init = 0;
diff --git a/sound/pci/asihpi/hpifunc.c b/sound/pci/asihpi/hpifunc.c
index eda26b3..298eef3 100644
--- a/sound/pci/asihpi/hpifunc.c
+++ b/sound/pci/asihpi/hpifunc.c
@@ -2946,6 +2946,20 @@
 		HPI_TUNER_HDRADIO_SIGNAL_QUALITY, 0, 0, pquality, NULL);
 }
 
+u16 hpi_tuner_get_hd_radio_signal_blend(const struct hpi_hsubsys *ph_subsys,
+	u32 h_control, u32 *pblend)
+{
+	return hpi_control_param_get(ph_subsys, h_control,
+		HPI_TUNER_HDRADIO_BLEND, 0, 0, pblend, NULL);
+}
+
+u16 hpi_tuner_set_hd_radio_signal_blend(const struct hpi_hsubsys *ph_subsys,
+	u32 h_control, const u32 blend)
+{
+	return hpi_control_param_set(ph_subsys, h_control,
+		HPI_TUNER_HDRADIO_BLEND, blend, 0);
+}
+
 u16 hpi_tuner_getRDS(const struct hpi_hsubsys *ph_subsys, u32 h_control,
 	char *p_data)
 {
@@ -3266,8 +3280,7 @@
 
 void hpi_entity_free(struct hpi_entity *entity)
 {
-	if (entity != NULL)
-		kfree(entity);
+	kfree(entity);
 }
 
 static u16 hpi_entity_alloc_and_copy(struct hpi_entity *src,
diff --git a/sound/pci/asihpi/hpios.c b/sound/pci/asihpi/hpios.c
index de615cf..742ee12 100644
--- a/sound/pci/asihpi/hpios.c
+++ b/sound/pci/asihpi/hpios.c
@@ -89,26 +89,3 @@
 void hpios_locked_mem_free_all(void)
 {
 }
-
-void __iomem *hpios_map_io(struct pci_dev *pci_dev, int idx,
-	unsigned int length)
-{
-	HPI_DEBUG_LOG(DEBUG, "mapping %d %s %08llx-%08llx %04llx len 0x%x\n",
-		idx, pci_dev->resource[idx].name,
-		(unsigned long long)pci_resource_start(pci_dev, idx),
-		(unsigned long long)pci_resource_end(pci_dev, idx),
-		(unsigned long long)pci_resource_flags(pci_dev, idx), length);
-
-	if (!(pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM)) {
-		HPI_DEBUG_LOG(ERROR, "not an io memory resource\n");
-		return NULL;
-	}
-
-	if (length > pci_resource_len(pci_dev, idx)) {
-		HPI_DEBUG_LOG(ERROR, "resource too small for requested %d \n",
-			length);
-		return NULL;
-	}
-
-	return ioremap(pci_resource_start(pci_dev, idx), length);
-}
diff --git a/sound/pci/asihpi/hpios.h b/sound/pci/asihpi/hpios.h
index a62c3f1..370f39b 100644
--- a/sound/pci/asihpi/hpios.h
+++ b/sound/pci/asihpi/hpios.h
@@ -166,13 +166,4 @@
 	void __iomem *ap_remapped_mem_base[HPI_MAX_ADAPTER_MEM_SPACES];
 };
 
-static inline void hpios_unmap_io(void __iomem *addr,
-	unsigned long size)
-{
-	iounmap(addr);
-}
-
-void __iomem *hpios_map_io(struct pci_dev *pci_dev, int idx,
-	unsigned int length);
-
 #endif
diff --git a/sound/pci/aw2/aw2-alsa.c b/sound/pci/aw2/aw2-alsa.c
index 67921f9..c150022 100644
--- a/sound/pci/aw2/aw2-alsa.c
+++ b/sound/pci/aw2/aw2-alsa.c
@@ -26,7 +26,7 @@
 #include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <sound/core.h>
 #include <sound/initval.h>
 #include <sound/pcm.h>
@@ -44,9 +44,6 @@
 /*********************************
  * DEFINES
  ********************************/
-#define PCI_VENDOR_ID_SAA7146		  0x1131
-#define PCI_DEVICE_ID_SAA7146		  0x7146
-
 #define CTL_ROUTE_ANALOG 0
 #define CTL_ROUTE_DIGITAL 1
 
@@ -165,7 +162,7 @@
 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
 
 static DEFINE_PCI_DEVICE_TABLE(snd_aw2_ids) = {
-	{PCI_VENDOR_ID_SAA7146, PCI_DEVICE_ID_SAA7146, 0, 0,
+	{PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
 	 0, 0, 0},
 	{0}
 };
@@ -419,7 +416,7 @@
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 
-	snd_printdd(KERN_DEBUG "aw2: Playback_open \n");
+	snd_printdd(KERN_DEBUG "aw2: Playback_open\n");
 	runtime->hw = snd_aw2_playback_hw;
 	return 0;
 }
@@ -435,7 +432,7 @@
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 
-	snd_printdd(KERN_DEBUG "aw2: Capture_open \n");
+	snd_printdd(KERN_DEBUG "aw2: Capture_open\n");
 	runtime->hw = snd_aw2_capture_hw;
 	return 0;
 }
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index 4b302d8..7a94014 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -35,6 +35,7 @@
 #include <linux/vmalloc.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
+#include <linux/moduleparam.h>
 
 #include <sound/core.h>
 #include <sound/tlv.h>
@@ -50,6 +51,10 @@
 #define EMU10K1_CENTER_LFE_FROM_FRONT
 #endif
 
+static bool high_res_gpr_volume;
+module_param(high_res_gpr_volume, bool, 0444);
+MODULE_PARM_DESC(high_res_gpr_volume, "GPR mixer controls use 31-bit range.");
+
 /*
  *  Tables
  */ 
@@ -296,6 +301,7 @@
 
 /* EMU10k1/EMU10k2 DSP control db gain */
 static const DECLARE_TLV_DB_SCALE(snd_emu10k1_db_scale1, -4000, 40, 1);
+static const DECLARE_TLV_DB_LINEAR(snd_emu10k1_db_linear, TLV_DB_GAIN_MUTE, 0);
 
 static const u32 onoff_table[2] = {
 	0x00000000, 0x00000001
@@ -1072,10 +1078,17 @@
 	strcpy(ctl->id.name, name);
 	ctl->vcount = ctl->count = 1;
 	ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
-	ctl->min = 0;
-	ctl->max = 100;
-	ctl->tlv = snd_emu10k1_db_scale1;
-	ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;	
+	if (high_res_gpr_volume) {
+		ctl->min = 0;
+		ctl->max = 0x7fffffff;
+		ctl->tlv = snd_emu10k1_db_linear;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_NONE;
+	} else {
+		ctl->min = 0;
+		ctl->max = 100;
+		ctl->tlv = snd_emu10k1_db_scale1;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
+	}
 }
 
 static void __devinit
@@ -1087,10 +1100,17 @@
 	ctl->vcount = ctl->count = 2;
 	ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
 	ctl->gpr[1] = gpr + 1; ctl->value[1] = defval;
-	ctl->min = 0;
-	ctl->max = 100;
-	ctl->tlv = snd_emu10k1_db_scale1;
-	ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
+	if (high_res_gpr_volume) {
+		ctl->min = 0;
+		ctl->max = 0x7fffffff;
+		ctl->tlv = snd_emu10k1_db_linear;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_NONE;
+	} else {
+		ctl->min = 0;
+		ctl->max = 100;
+		ctl->tlv = snd_emu10k1_db_scale1;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
+	}
 }
 
 static void __devinit
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 170610e..dc79564 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1097,6 +1097,7 @@
 	struct azx *chip = dev_id;
 	struct azx_dev *azx_dev;
 	u32 status;
+	u8 sd_status;
 	int i, ok;
 
 	spin_lock(&chip->reg_lock);
@@ -1110,8 +1111,10 @@
 	for (i = 0; i < chip->num_streams; i++) {
 		azx_dev = &chip->azx_dev[i];
 		if (status & azx_dev->sd_int_sta_mask) {
+			sd_status = azx_sd_readb(azx_dev, SD_STS);
 			azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
-			if (!azx_dev->substream || !azx_dev->running)
+			if (!azx_dev->substream || !azx_dev->running ||
+			    !(sd_status & SD_INT_COMPLETE))
 				continue;
 			/* check whether this IRQ is really acceptable */
 			ok = azx_position_ok(chip, azx_dev);
@@ -2279,12 +2282,16 @@
  * white/black-listing for position_fix
  */
 static struct snd_pci_quirk position_fix_list[] __devinitdata = {
+	SND_PCI_QUIRK(0x1025, 0x009f, "Acer Aspire 5110", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1028, 0x01f6, "Dell Latitude 131L", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
-	SND_PCI_QUIRK(0x1106, 0x3288, "ASUS M2V-MX SE", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
+	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
+	SND_PCI_QUIRK(0x1106, 0x3288, "ASUS M2V-MX SE", POS_FIX_LPIB),
+	SND_PCI_QUIRK(0x1179, 0xff10, "Toshiba A100-259", POS_FIX_LPIB),
+	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1565, 0x820f, "Biostar Microtech", POS_FIX_LPIB),
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index e863649..2bf2cb5 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -2975,6 +2975,8 @@
 	SND_PCI_QUIRK(0x1179, 0xff50, "Toshiba Satellite P500-PSPGSC-01800T", CXT5066_OLPC_XO_1_5),
 	SND_PCI_QUIRK(0x1179, 0xffe0, "Toshiba Satellite Pro T130-15F", CXT5066_OLPC_XO_1_5),
 	SND_PCI_QUIRK(0x17aa, 0x21b2, "Thinkpad X100e", CXT5066_IDEAPAD),
+	SND_PCI_QUIRK(0x17aa, 0x21b3, "Thinkpad Edge 13 (197)", CXT5066_IDEAPAD),
+	SND_PCI_QUIRK(0x17aa, 0x21b4, "Thinkpad Edge", CXT5066_IDEAPAD),
 	SND_PCI_QUIRK(0x17aa, 0x3a0d, "ideapad", CXT5066_IDEAPAD),
 	SND_PCI_QUIRK(0x17aa, 0x215e, "Lenovo Thinkpad", CXT5066_THINKPAD),
 	{}
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 53538b0..17d4548 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -7025,6 +7025,14 @@
 	},
 };
 
+static struct hda_input_mux alc889A_imac91_capture_source = {
+	.num_items = 2,
+	.items = {
+		{ "Mic", 0x01 },
+		{ "Line", 0x2 }, /* Not sure! */
+	},
+};
+
 /*
  * 2ch mode
  */
@@ -7486,15 +7494,8 @@
 };
 
 static struct snd_kcontrol_new alc885_imac91_mixer[] = {
-	HDA_CODEC_VOLUME("Line-Out Playback Volume", 0x0c, 0x00, HDA_OUTPUT),
-	HDA_BIND_MUTE   ("Line-Out Playback Switch", 0x0c, 0x02, HDA_INPUT),
-	HDA_CODEC_MUTE  ("Speaker Playback Switch", 0x14, 0x00, HDA_OUTPUT),
-	HDA_CODEC_VOLUME("Speaker Playback Volume", 0x0d, 0x00, HDA_OUTPUT),
-	HDA_CODEC_VOLUME("Line Playback Volume", 0x0b, 0x02, HDA_INPUT),
-	HDA_CODEC_MUTE  ("Line Playback Switch", 0x0b, 0x02, HDA_INPUT),
-	HDA_CODEC_VOLUME("Mic Playback Volume", 0x0b, 0x00, HDA_INPUT),
-	HDA_CODEC_MUTE  ("Mic Playback Switch", 0x0b, 0x00, HDA_INPUT),
-	HDA_CODEC_VOLUME("Mic Boost", 0x18, 0x00, HDA_INPUT),
+	HDA_CODEC_VOLUME("Speaker Playback Volume", 0x0c, 0x00, HDA_OUTPUT),
+	HDA_BIND_MUTE("Speaker Playback Switch", 0x0c, 0x02, HDA_INPUT),
 	{ } /* end */
 };
 
@@ -7995,61 +7996,56 @@
 
 /* iMac 9,1 */
 static struct hda_verb alc885_imac91_init_verbs[] = {
-	/* Line-Out mixer: unmute input/output amp left and right (volume = 0) */
-	{0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_ZERO},
-	{0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
-	{0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(1)},
+	/* Internal Speaker Pin (0x0c) */
+	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, (PIN_OUT | AC_PINCTL_VREF_50) },
+	{0x18, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x18, AC_VERB_SET_CONNECT_SEL, 0x00},
+	{0x1a, AC_VERB_SET_PIN_WIDGET_CONTROL, (PIN_OUT | AC_PINCTL_VREF_50) },
+	{0x1a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x1a, AC_VERB_SET_CONNECT_SEL, 0x00},
+	/* HP Pin: Rear */
+	{0x14, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP},
+	{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
+	{0x14, AC_VERB_SET_CONNECT_SEL, 0x00},
+	{0x14, AC_VERB_SET_UNSOLICITED_ENABLE, (ALC880_HP_EVENT | AC_USRSP_EN)},
+	/* Line in Rear */
+	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, AC_PINCTL_VREF_50},
+	{0x15, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
+	/* Front Mic pin: input vref at 80% */
+	{0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
+	{0x19, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
 	/* Rear mixer */
 	{0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_ZERO},
 	{0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
 	{0x0d, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(1)},
-	/* HP Pin: output 0 (0x0c) */
-	{0x14, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP},
-	{0x14, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},
-	{0x14, AC_VERB_SET_CONNECT_SEL, 0x00},
-	{0x14, AC_VERB_SET_UNSOLICITED_ENABLE, ALC880_HP_EVENT | AC_USRSP_EN},
-	/* Internal Speakers: output 0 (0x0d) */
-	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
-	{0x15, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
-	{0x15, AC_VERB_SET_CONNECT_SEL, 0x00},
-	/* Mic (rear) pin: input vref at 80% */
-	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
-	{0x18, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
-	/* Front Mic pin: input vref at 80% */
-	{0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
-	{0x19, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
-	/* Line In pin: use output 1 when in LineOut mode */
-	{0x1a, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
-	{0x1a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
-	{0x1a, AC_VERB_SET_CONNECT_SEL, 0x01},
-
-	/* FIXME: use matrix-type input source selection */
-	/* Mixer elements: 0x18, 19, 1a, 1b, 1c, 1d, 14, 15, 16, 17, 0b */
-	/* Input mixer1: unmute Mic, F-Mic, Line, CD inputs */
+	/* Line-Out mixer: unmute input/output amp left and right (volume = 0) */
+	{0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_ZERO},
+	{0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
+	{0x0c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(1)},
+	/* 0x24 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In */
 	{0x24, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
 	{0x24, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(3)},
 	{0x24, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(2)},
 	{0x24, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(4)},
-	/* Input mixer2 */
+	/* 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In */
 	{0x23, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
 	{0x23, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(3)},
 	{0x23, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(2)},
 	{0x23, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(4)},
-	/* Input mixer3 */
+	/* 0x22 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In */
 	{0x22, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(0)},
 	{0x22, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(3)},
 	{0x22, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(2)},
 	{0x22, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(4)},
-	/* ADC1: mute amp left and right */
+	/* 0x07 [Audio Input] wcaps 0x10011b: Stereo Amp-In */
 	{0x07, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
 	{0x07, AC_VERB_SET_CONNECT_SEL, 0x00},
-	/* ADC2: mute amp left and right */
+	/* 0x08 [Audio Input] wcaps 0x10011b: Stereo Amp-In */
 	{0x08, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
 	{0x08, AC_VERB_SET_CONNECT_SEL, 0x00},
-	/* ADC3: mute amp left and right */
+	/* 0x09 [Audio Input] wcaps 0x10011b: Stereo Amp-In */
 	{0x09, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
 	{0x09, AC_VERB_SET_CONNECT_SEL, 0x00},
-
 	{ }
 };
 
@@ -8118,7 +8114,7 @@
 	struct alc_spec *spec = codec->spec;
 
 	spec->autocfg.hp_pins[0] = 0x14;
-	spec->autocfg.speaker_pins[0] = 0x15;
+	spec->autocfg.speaker_pins[0] = 0x18;
 	spec->autocfg.speaker_pins[1] = 0x1a;
 }
 
@@ -9627,14 +9623,14 @@
 		.init_hook = alc885_imac24_init_hook,
 	},
 	[ALC885_IMAC91] = {
-		.mixers = { alc885_imac91_mixer, alc882_chmode_mixer },
+		.mixers = {alc885_imac91_mixer},
 		.init_verbs = { alc885_imac91_init_verbs,
 				alc880_gpio1_init_verbs },
 		.num_dacs = ARRAY_SIZE(alc882_dac_nids),
 		.dac_nids = alc882_dac_nids,
-		.channel_mode = alc885_mbp_4ch_modes,
-		.num_channel_mode = ARRAY_SIZE(alc885_mbp_4ch_modes),
-		.input_mux = &alc882_capture_source,
+		.channel_mode = alc885_mba21_ch_modes,
+		.num_channel_mode = ARRAY_SIZE(alc885_mba21_ch_modes),
+		.input_mux = &alc889A_imac91_capture_source,
 		.dig_out_nid = ALC882_DIGOUT_NID,
 		.dig_in_nid = ALC882_DIGIN_NID,
 		.unsol_event = alc_automute_amp_unsol_event,
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index a0e06d8..f1e7bab 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2078,12 +2078,12 @@
 	SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_INTEL, 0xff00, 0x2000,
 			   "Intel D965", STAC_D965_3ST),
 	/* Dell 3 stack systems */
-	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01f7, "Dell XPS M1730", STAC_DELL_3ST),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01dd, "Dell Dimension E520", STAC_DELL_3ST),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01ed, "Dell     ", STAC_DELL_3ST),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01f4, "Dell     ", STAC_DELL_3ST),
 	/* Dell 3 stack systems with verb table in BIOS */
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01f3, "Dell Inspiron 1420", STAC_DELL_BIOS),
+	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01f7, "Dell XPS M1730", STAC_DELL_BIOS),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x0227, "Dell Vostro 1400  ", STAC_DELL_BIOS),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x022e, "Dell     ", STAC_DELL_BIOS),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x022f, "Dell Inspiron 1525", STAC_DELL_BIOS),
diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index 8ae2020..0221ca7 100644
--- a/sound/soc/codecs/wm8350.c
+++ b/sound/soc/codecs/wm8350.c
@@ -426,8 +426,8 @@
 	SOC_ENUM_SINGLE(WM8350_INPUT_MIXER_VOLUME, 15, 2, wm8350_lr),
 };
 
-static DECLARE_TLV_DB_LINEAR(pre_amp_tlv, -1200, 3525);
-static DECLARE_TLV_DB_LINEAR(out_pga_tlv, -5700, 600);
+static DECLARE_TLV_DB_SCALE(pre_amp_tlv, -1200, 3525, 0);
+static DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 600, 0);
 static DECLARE_TLV_DB_SCALE(dac_pcm_tlv, -7163, 36, 1);
 static DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -12700, 50, 1);
 static DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 1);
diff --git a/sound/soc/codecs/wm8400.c b/sound/soc/codecs/wm8400.c
index 7f5d080..8f29406 100644
--- a/sound/soc/codecs/wm8400.c
+++ b/sound/soc/codecs/wm8400.c
@@ -107,21 +107,21 @@
 	wm8400_reset_codec_reg_cache(wm8400->wm8400);
 }
 
-static const DECLARE_TLV_DB_LINEAR(rec_mix_tlv, -1500, 600);
+static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 600, 0);
 
-static const DECLARE_TLV_DB_LINEAR(in_pga_tlv, -1650, 3000);
+static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1650, 3000, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_mix_tlv, -2100, 0);
+static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -2100, 0, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_pga_tlv, -7300, 600);
+static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -7300, 600, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_omix_tlv, -600, 0);
+static const DECLARE_TLV_DB_SCALE(out_omix_tlv, -600, 0, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_dac_tlv, -7163, 0);
+static const DECLARE_TLV_DB_SCALE(out_dac_tlv, -7163, 0, 0);
 
-static const DECLARE_TLV_DB_LINEAR(in_adc_tlv, -7163, 1763);
+static const DECLARE_TLV_DB_SCALE(in_adc_tlv, -7163, 1763, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_sidetone_tlv, -3600, 0);
+static const DECLARE_TLV_DB_SCALE(out_sidetone_tlv, -3600, 0, 0);
 
 static int wm8400_outpga_put_volsw_vu(struct snd_kcontrol *kcontrol,
         struct snd_ctl_elem_value *ucontrol)
@@ -440,7 +440,7 @@
 /* INMIX dB values */
 static const unsigned int in_mix_tlv[] = {
 	TLV_DB_RANGE_HEAD(1),
-	0,7, TLV_DB_LINEAR_ITEM(-1200, 600),
+	0,7, TLV_DB_SCALE_ITEM(-1200, 600, 0),
 };
 
 /* Left In PGA Connections */
diff --git a/sound/soc/codecs/wm8990.c b/sound/soc/codecs/wm8990.c
index 7b536d9..c018772 100644
--- a/sound/soc/codecs/wm8990.c
+++ b/sound/soc/codecs/wm8990.c
@@ -111,21 +111,21 @@
 
 #define wm8990_reset(c) snd_soc_write(c, WM8990_RESET, 0)
 
-static const DECLARE_TLV_DB_LINEAR(rec_mix_tlv, -1500, 600);
+static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 600, 0);
 
-static const DECLARE_TLV_DB_LINEAR(in_pga_tlv, -1650, 3000);
+static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1650, 3000, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_mix_tlv, 0, -2100);
+static const DECLARE_TLV_DB_SCALE(out_mix_tlv, 0, -2100, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_pga_tlv, -7300, 600);
+static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -7300, 600, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_omix_tlv, -600, 0);
+static const DECLARE_TLV_DB_SCALE(out_omix_tlv, -600, 0, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_dac_tlv, -7163, 0);
+static const DECLARE_TLV_DB_SCALE(out_dac_tlv, -7163, 0, 0);
 
-static const DECLARE_TLV_DB_LINEAR(in_adc_tlv, -7163, 1763);
+static const DECLARE_TLV_DB_SCALE(in_adc_tlv, -7163, 1763, 0);
 
-static const DECLARE_TLV_DB_LINEAR(out_sidetone_tlv, -3600, 0);
+static const DECLARE_TLV_DB_SCALE(out_sidetone_tlv, -3600, 0, 0);
 
 static int wm899x_outpga_put_volsw_vu(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol)
@@ -451,7 +451,7 @@
 /* INMIX dB values */
 static const unsigned int in_mix_tlv[] = {
 	TLV_DB_RANGE_HEAD(1),
-	0, 7, TLV_DB_LINEAR_ITEM(-1200, 600),
+	0, 7, TLV_DB_SCALE_ITEM(-1200, 600, 0),
 };
 
 /* Left In PGA Connections */
diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index 2b31ac6..05f19c9 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -73,7 +73,8 @@
 {
 	struct snd_pcm_substream *substream = data;
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct imx_pcm_dma_params *dma_params = rtd->dai->cpu_dai->dma_data;
+	struct imx_pcm_dma_params *dma_params = 
+		snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
 	int ret;
@@ -102,7 +103,7 @@
 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
 	int ret;
 
-	dma_params = snd_soc_get_dma_data(rtd->dai->cpu_dai, substream);
+	dma_params = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream);
 
 	iprtd->dma = imx_dma_request_by_prio(DRV_NAME, DMA_PRIO_HIGH);
 	if (iprtd->dma < 0) {
@@ -212,7 +213,7 @@
 	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
 	int err;
 
-	dma_params = snd_soc_get_dma_data(rtd->dai->cpu_dai, substream);
+	dma_params = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream);
 
 	iprtd->substream = substream;
 	iprtd->buf = (unsigned int *)substream->dma_buffer.area;
diff --git a/sound/soc/sh/siu_dai.c b/sound/soc/sh/siu_dai.c
index d86ee1b..eeed5ed 100644
--- a/sound/soc/sh/siu_dai.c
+++ b/sound/soc/sh/siu_dai.c
@@ -588,6 +588,8 @@
 		ret = siu_dai_spbstart(port_info);
 		if (ret < 0)
 			goto fail;
+	} else {
+		ret = 0;
 	}
 
 	port_info->play_cap |= self;
diff --git a/sound/usb/caiaq/control.c b/sound/usb/caiaq/control.c
index 36ed703..91c804c 100644
--- a/sound/usb/caiaq/control.c
+++ b/sound/usb/caiaq/control.c
@@ -42,8 +42,9 @@
 
 	switch (dev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
 		if (pos == 0) {
-			/* current input mode of A8DJ */
+			/* current input mode of A8DJ and A4DJ */
 			uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 			uinfo->value.integer.min = 0;
 			uinfo->value.integer.max = 2;
@@ -51,16 +52,6 @@
 		}
 		break;
 
-	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
-		if (pos == 0) {
-			/* current input mode of A4DJ */
-			uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-			uinfo->value.integer.min = 0;
-			uinfo->value.integer.max = 1;
-			return 0;
-		}
-		break;
-
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 		maxval = 127;
 		break;
@@ -86,14 +77,6 @@
 	struct snd_usb_caiaqdev *dev = caiaqdev(chip->card);
 	int pos = kcontrol->private_value;
 
-	if (dev->chip.usb_id ==
-		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ)) {
-		/* A4DJ has only one control */
-		/* do not expose hardware input mode 0 */
-		ucontrol->value.integer.value[0] = dev->control_state[0] - 1;
-		return 0;
-	}
-
 	if (pos & CNT_INTVAL)
 		ucontrol->value.integer.value[0]
 			= dev->control_state[pos & ~CNT_INTVAL];
@@ -112,20 +95,9 @@
 	int pos = kcontrol->private_value;
 	unsigned char cmd = EP1_CMD_WRITE_IO;
 
-	switch (dev->chip.usb_id) {
-	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ): {
-		/* A4DJ has only one control */
-		/* do not expose hardware input mode 0 */
-		dev->control_state[0] = ucontrol->value.integer.value[0] + 1;
-		snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO,
-				dev->control_state, sizeof(dev->control_state));
-		return 1;
-	}
-
-	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+	if (dev->chip.usb_id ==
+		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1))
 		cmd = EP1_CMD_DIMM_LEDS;
-		break;
-	}
 
 	if (pos & CNT_INTVAL) {
 		dev->control_state[pos & ~CNT_INTVAL]
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c
index 8052718..cdfb856 100644
--- a/sound/usb/caiaq/device.c
+++ b/sound/usb/caiaq/device.c
@@ -36,7 +36,7 @@
 #include "input.h"
 
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
-MODULE_DESCRIPTION("caiaq USB audio, version 1.3.20");
+MODULE_DESCRIPTION("caiaq USB audio, version 1.3.21");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2},"
 			 "{Native Instruments, RigKontrol3},"
@@ -320,12 +320,6 @@
 		}
 
 		break;
-	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
-		/* Audio 4 DJ - default input mode to phono */
-		dev->control_state[0] = 2;
-		snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO,
-			dev->control_state, 1);
-		break;
 	}
 
 	if (dev->spec.num_analog_audio_out +
diff --git a/sound/usb/caiaq/input.c b/sound/usb/caiaq/input.c
index 8bbfbfd..dcb6207 100644
--- a/sound/usb/caiaq/input.c
+++ b/sound/usb/caiaq/input.c
@@ -171,7 +171,7 @@
 		input_report_abs(input_dev, ABS_HAT0Y, (buf[4] << 8)  | buf[5]);
 		input_report_abs(input_dev, ABS_HAT1X, (buf[12] << 8) | buf[13]);
 		input_report_abs(input_dev, ABS_HAT1Y, (buf[2] << 8)  | buf[3]);
-		input_report_abs(input_dev, ABS_HAT2X, (buf[15] << 8) | buf[15]);
+		input_report_abs(input_dev, ABS_HAT2X, (buf[14] << 8) | buf[15]);
 		input_report_abs(input_dev, ABS_HAT2Y, (buf[0] << 8)  | buf[1]);
 		input_report_abs(input_dev, ABS_HAT3X, (buf[10] << 8) | buf[11]);
 		input_report_abs(input_dev, ABS_HAT3Y, (buf[6] << 8)  | buf[7]);
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index ef07a6d..28ee1ce 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -149,6 +149,47 @@
 	return 0;
 }
 
+static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip,
+					 struct usb_host_interface *alts,
+					 int protocol, int iface_no)
+{
+	/* parsed with a v1 header here. that's ok as we only look at the
+	 * header first which is the same for both versions */
+	struct uac_iso_endpoint_descriptor *csep;
+	struct usb_interface_descriptor *altsd = get_iface_desc(alts);
+	int attributes = 0;
+
+	csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
+
+	/* Creamware Noah has this descriptor after the 2nd endpoint */
+	if (!csep && altsd->bNumEndpoints >= 2)
+		csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
+
+	if (!csep || csep->bLength < 7 ||
+	    csep->bDescriptorSubtype != UAC_EP_GENERAL) {
+		snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
+			   " class specific endpoint descriptor\n",
+			   chip->dev->devnum, iface_no,
+			   altsd->bAlternateSetting);
+		return 0;
+	}
+
+	if (protocol == UAC_VERSION_1) {
+		attributes = csep->bmAttributes;
+	} else {
+		struct uac2_iso_endpoint_descriptor *csep2 =
+			(struct uac2_iso_endpoint_descriptor *) csep;
+
+		attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX;
+
+		/* emulate the endpoint attributes of a v1 device */
+		if (csep2->bmControls & UAC2_CONTROL_PITCH)
+			attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL;
+	}
+
+	return attributes;
+}
+
 int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
 {
 	struct usb_device *dev;
@@ -158,8 +199,8 @@
 	int i, altno, err, stream;
 	int format = 0, num_channels = 0;
 	struct audioformat *fp = NULL;
-	unsigned char *fmt, *csep;
 	int num, protocol;
+	struct uac_format_type_i_continuous_descriptor *fmt;
 
 	dev = chip->dev;
 
@@ -256,8 +297,8 @@
 				   dev->devnum, iface_no, altno);
 			continue;
 		}
-		if (((protocol == UAC_VERSION_1) && (fmt[0] < 8)) ||
-		    ((protocol == UAC_VERSION_2) && (fmt[0] != 6))) {
+		if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) ||
+		    ((protocol == UAC_VERSION_2) && (fmt->bLength != 6))) {
 			snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
 				   dev->devnum, iface_no, altno);
 			continue;
@@ -268,7 +309,9 @@
 		 * with the previous one, except for a larger packet size, but
 		 * is actually a mislabeled two-channel setting; ignore it.
 		 */
-		if (fmt[4] == 1 && fmt[5] == 2 && altno == 2 && num == 3 &&
+		if (fmt->bNrChannels == 1 &&
+		    fmt->bSubframeSize == 2 &&
+		    altno == 2 && num == 3 &&
 		    fp && fp->altsetting == 1 && fp->channels == 1 &&
 		    fp->formats == SNDRV_PCM_FMTBIT_S16_LE &&
 		    protocol == UAC_VERSION_1 &&
@@ -276,17 +319,6 @@
 							fp->maxpacksize * 2)
 			continue;
 
-		csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
-		/* Creamware Noah has this descriptor after the 2nd endpoint */
-		if (!csep && altsd->bNumEndpoints >= 2)
-			csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
-		if (!csep || csep[0] < 7 || csep[2] != UAC_EP_GENERAL) {
-			snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
-				   " class specific endpoint descriptor\n",
-				   dev->devnum, iface_no, altno);
-			csep = NULL;
-		}
-
 		fp = kzalloc(sizeof(*fp), GFP_KERNEL);
 		if (! fp) {
 			snd_printk(KERN_ERR "cannot malloc\n");
@@ -305,7 +337,7 @@
 		if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
 			fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
 					* (fp->maxpacksize & 0x7ff);
-		fp->attributes = csep ? csep[3] : 0;
+		fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no);
 
 		/* some quirks for attributes here */
 
diff --git a/sound/usb/format.c b/sound/usb/format.c
index b87cf87..fe29d61 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -278,12 +278,11 @@
  * parse the format type I and III descriptors
  */
 static int parse_audio_format_i(struct snd_usb_audio *chip,
-				struct audioformat *fp,
-				int format, void *_fmt,
+				struct audioformat *fp, int format,
+				struct uac_format_type_i_continuous_descriptor *fmt,
 				struct usb_host_interface *iface)
 {
 	struct usb_interface_descriptor *altsd = get_iface_desc(iface);
-	struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
 	int protocol = altsd->bInterfaceProtocol;
 	int pcm_format, ret;
 
@@ -320,7 +319,7 @@
 	switch (protocol) {
 	case UAC_VERSION_1:
 		fp->channels = fmt->bNrChannels;
-		ret = parse_audio_format_rates_v1(chip, fp, _fmt, 7);
+		ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7);
 		break;
 	case UAC_VERSION_2:
 		/* fp->channels is already set in this case */
@@ -392,12 +391,12 @@
 }
 
 int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
-		       int format, unsigned char *fmt, int stream,
-		       struct usb_host_interface *iface)
+			       int format, struct uac_format_type_i_continuous_descriptor *fmt,
+			       int stream, struct usb_host_interface *iface)
 {
 	int err;
 
-	switch (fmt[3]) {
+	switch (fmt->bFormatType) {
 	case UAC_FORMAT_TYPE_I:
 	case UAC_FORMAT_TYPE_III:
 		err = parse_audio_format_i(chip, fp, format, fmt, iface);
@@ -407,10 +406,11 @@
 		break;
 	default:
 		snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
-			   chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
-		return -1;
+			   chip->dev->devnum, fp->iface, fp->altsetting,
+			   fmt->bFormatType);
+		return -ENOTSUPP;
 	}
-	fp->fmt_type = fmt[3];
+	fp->fmt_type = fmt->bFormatType;
 	if (err < 0)
 		return err;
 #if 1
@@ -421,10 +421,10 @@
 	if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
 	    chip->usb_id == USB_ID(0x041e, 0x3020) ||
 	    chip->usb_id == USB_ID(0x041e, 0x3061)) {
-		if (fmt[3] == UAC_FORMAT_TYPE_I &&
+		if (fmt->bFormatType == UAC_FORMAT_TYPE_I &&
 		    fp->rates != SNDRV_PCM_RATE_48000 &&
 		    fp->rates != SNDRV_PCM_RATE_96000)
-			return -1;
+			return -ENOTSUPP;
 	}
 #endif
 	return 0;
diff --git a/sound/usb/format.h b/sound/usb/format.h
index 8298c4e..387924f 100644
--- a/sound/usb/format.h
+++ b/sound/usb/format.h
@@ -1,8 +1,9 @@
 #ifndef __USBAUDIO_FORMAT_H
 #define __USBAUDIO_FORMAT_H
 
-int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
-			       int format, unsigned char *fmt, int stream,
-			       struct usb_host_interface *iface);
+int snd_usb_parse_audio_format(struct snd_usb_audio *chip,
+			       struct audioformat *fp, int format,
+			       struct uac_format_type_i_continuous_descriptor *fmt,
+			       int stream, struct usb_host_interface *iface);
 
 #endif /*  __USBAUDIO_FORMAT_H */
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 8b1e4b1..4678564 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -645,6 +645,105 @@
 };
 
 /*
+ * AKAI MPD16 protocol:
+ *
+ * For control port (endpoint 1):
+ * ==============================
+ * One or more chunks consisting of first byte of (0x10 | msg_len) and then a
+ * SysEx message (msg_len=9 bytes long).
+ *
+ * For data port (endpoint 2):
+ * ===========================
+ * One or more chunks consisting of first byte of (0x20 | msg_len) and then a
+ * MIDI message (msg_len bytes long)
+ *
+ * Messages sent: Active Sense, Note On, Poly Pressure, Control Change.
+ */
+static void snd_usbmidi_akai_input(struct snd_usb_midi_in_endpoint *ep,
+				   uint8_t *buffer, int buffer_length)
+{
+	unsigned int pos = 0;
+	unsigned int len = (unsigned int)buffer_length;
+	while (pos < len) {
+		unsigned int port = (buffer[pos] >> 4) - 1;
+		unsigned int msg_len = buffer[pos] & 0x0f;
+		pos++;
+		if (pos + msg_len <= len && port < 2)
+			snd_usbmidi_input_data(ep, 0, &buffer[pos], msg_len);
+		pos += msg_len;
+	}
+}
+
+#define MAX_AKAI_SYSEX_LEN 9
+
+static void snd_usbmidi_akai_output(struct snd_usb_midi_out_endpoint *ep,
+				    struct urb *urb)
+{
+	uint8_t *msg;
+	int pos, end, count, buf_end;
+	uint8_t tmp[MAX_AKAI_SYSEX_LEN];
+	struct snd_rawmidi_substream *substream = ep->ports[0].substream;
+
+	if (!ep->ports[0].active)
+		return;
+
+	msg = urb->transfer_buffer + urb->transfer_buffer_length;
+	buf_end = ep->max_transfer - MAX_AKAI_SYSEX_LEN - 1;
+
+	/* only try adding more data when there's space for at least 1 SysEx */
+	while (urb->transfer_buffer_length < buf_end) {
+		count = snd_rawmidi_transmit_peek(substream,
+						  tmp, MAX_AKAI_SYSEX_LEN);
+		if (!count) {
+			ep->ports[0].active = 0;
+			return;
+		}
+		/* try to skip non-SysEx data */
+		for (pos = 0; pos < count && tmp[pos] != 0xF0; pos++)
+			;
+
+		if (pos > 0) {
+			snd_rawmidi_transmit_ack(substream, pos);
+			continue;
+		}
+
+		/* look for the start or end marker */
+		for (end = 1; end < count && tmp[end] < 0xF0; end++)
+			;
+
+		/* next SysEx started before the end of current one */
+		if (end < count && tmp[end] == 0xF0) {
+			/* it's incomplete - drop it */
+			snd_rawmidi_transmit_ack(substream, end);
+			continue;
+		}
+		/* SysEx complete */
+		if (end < count && tmp[end] == 0xF7) {
+			/* queue it, ack it, and get the next one */
+			count = end + 1;
+			msg[0] = 0x10 | count;
+			memcpy(&msg[1], tmp, count);
+			snd_rawmidi_transmit_ack(substream, count);
+			urb->transfer_buffer_length += count + 1;
+			msg += count + 1;
+			continue;
+		}
+		/* less than 9 bytes and no end byte - wait for more */
+		if (count < MAX_AKAI_SYSEX_LEN) {
+			ep->ports[0].active = 0;
+			return;
+		}
+		/* 9 bytes and no end marker in sight - malformed, skip it */
+		snd_rawmidi_transmit_ack(substream, count);
+	}
+}
+
+static struct usb_protocol_ops snd_usbmidi_akai_ops = {
+	.input = snd_usbmidi_akai_input,
+	.output = snd_usbmidi_akai_output,
+};
+
+/*
  * Novation USB MIDI protocol: number of data bytes is in the first byte
  * (when receiving) (+1!) or in the second byte (when sending); data begins
  * at the third byte.
@@ -1434,6 +1533,11 @@
 	EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
 	EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
 	EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
+	/* Akai MPD16 */
+	CONTROL_PORT(0x09e8, 0x0062, 0, "%s Control"),
+	PORT_INFO(0x09e8, 0x0062, 1, "%s MIDI", 0,
+		SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
+		SNDRV_SEQ_PORT_TYPE_HARDWARE),
 	/* Access Music Virus TI */
 	EXTERNAL_PORT(0x133e, 0x0815, 0, "%s MIDI"),
 	PORT_INFO(0x133e, 0x0815, 1, "%s Synth", 0,
@@ -2035,6 +2139,12 @@
 		umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
 		err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
 		break;
+	case QUIRK_MIDI_AKAI:
+		umidi->usb_protocol_ops = &snd_usbmidi_akai_ops;
+		err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
+		/* endpoint 1 is input-only */
+		endpoints[1].out_cables = 0;
+		break;
 	default:
 		snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
 		err = -ENXIO;
diff --git a/sound/usb/midi.h b/sound/usb/midi.h
index 2089ec9..2fca80b 100644
--- a/sound/usb/midi.h
+++ b/sound/usb/midi.h
@@ -37,6 +37,8 @@
 
 /* for QUIRK_MIDI_CME, data is NULL */
 
+/* for QUIRK_MIDI_AKAI, data is NULL */
+
 int snd_usbmidi_create(struct snd_card *card,
 		       struct usb_interface *iface,
 		       struct list_head *midi_list,
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 97dd176..03ce971 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1126,7 +1126,7 @@
 	} else {
 		struct uac2_feature_unit_descriptor *ftr = _ftr;
 		csize = 4;
-		channels = (hdr->bLength - 6) / 4;
+		channels = (hdr->bLength - 6) / 4 - 1;
 		bmaControls = ftr->bmaControls;
 	}
 
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 2bf0d77..056587d 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -120,10 +120,6 @@
 
 	ep = get_endpoint(alts, 0)->bEndpointAddress;
 
-	/* if endpoint doesn't have pitch control, bail out */
-	if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL))
-		return 0;
-
 	data[0] = 1;
 	if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
 				   USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
@@ -137,8 +133,32 @@
 	return 0;
 }
 
+static int init_pitch_v2(struct snd_usb_audio *chip, int iface,
+			 struct usb_host_interface *alts,
+			 struct audioformat *fmt)
+{
+	struct usb_device *dev = chip->dev;
+	unsigned char data[1];
+	unsigned int ep;
+	int err;
+
+	ep = get_endpoint(alts, 0)->bEndpointAddress;
+
+	data[0] = 1;
+	if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
+				   USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT,
+				   UAC2_EP_CS_PITCH << 8, 0,
+				   data, sizeof(data), 1000)) < 0) {
+		snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n",
+			   dev->devnum, iface, fmt->altsetting);
+		return err;
+	}
+
+	return 0;
+}
+
 /*
- * initialize the picth control and sample rate
+ * initialize the pitch control and sample rate
  */
 int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
 		       struct usb_host_interface *alts,
@@ -146,13 +166,16 @@
 {
 	struct usb_interface_descriptor *altsd = get_iface_desc(alts);
 
+	/* if endpoint doesn't have pitch control, bail out */
+	if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL))
+		return 0;
+
 	switch (altsd->bInterfaceProtocol) {
 	case UAC_VERSION_1:
 		return init_pitch_v1(chip, iface, alts, fmt);
 
 	case UAC_VERSION_2:
-		/* not implemented yet */
-		return 0;
+		return init_pitch_v2(chip, iface, alts, fmt);
 	}
 
 	return -EINVAL;
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 91ddef3..f8797f61 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -1973,6 +1973,17 @@
 	}
 },
 
+/* AKAI devices */
+{
+	USB_DEVICE(0x09e8, 0x0062),
+	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+		.vendor_name = "AKAI",
+		.product_name = "MPD16",
+		.ifnum = 0,
+		.type = QUIRK_MIDI_AKAI,
+	}
+},
+
 /* TerraTec devices */
 {
 	USB_DEVICE_VENDOR_SPEC(0x0ccd, 0x0012),
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 136e5b4..b45e54c 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -289,6 +289,7 @@
 		[QUIRK_MIDI_FASTLANE] = create_any_midi_quirk,
 		[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
 		[QUIRK_MIDI_CME] = create_any_midi_quirk,
+		[QUIRK_MIDI_AKAI] = create_any_midi_quirk,
 		[QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
 		[QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
 		[QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index d679e72..06ebf24 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -74,6 +74,7 @@
 	QUIRK_MIDI_FASTLANE,
 	QUIRK_MIDI_EMAGIC,
 	QUIRK_MIDI_CME,
+	QUIRK_MIDI_AKAI,
 	QUIRK_MIDI_US122L,
 	QUIRK_AUDIO_STANDARD_INTERFACE,
 	QUIRK_AUDIO_FIXED_ENDPOINT,
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 2cab8e8..909fa76 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -43,6 +43,9 @@
 -c::
         scale counter values
 
+-B::
+        print large numbers with thousands' separators according to locale
+
 EXAMPLES
 --------
 
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 77bcc9b..08278ed 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -277,7 +277,7 @@
 	printf("%*s: %Lu\n", BITS_PER_LONG / 2, "h->sum", h->sum);
 }
 
-static void annotate_sym(struct hist_entry *he)
+static int hist_entry__tty_annotate(struct hist_entry *he)
 {
 	struct map *map = he->ms.map;
 	struct dso *dso = map->dso;
@@ -288,7 +288,7 @@
 	struct objdump_line *pos, *n;
 
 	if (hist_entry__annotate(he, &head) < 0)
-		return;
+		return -1;
 
 	if (full_paths)
 		d_filename = filename;
@@ -317,30 +317,59 @@
 
 	if (print_line)
 		free_source_line(he, len);
+
+	return 0;
 }
 
 static void hists__find_annotations(struct hists *self)
 {
-	struct rb_node *nd;
+	struct rb_node *first = rb_first(&self->entries), *nd = first;
+	int key = KEY_RIGHT;
 
-	for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+	while (nd) {
 		struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
 		struct sym_priv *priv;
 
-		if (he->ms.sym == NULL)
-			continue;
+		if (he->ms.sym == NULL || he->ms.map->dso->annotate_warned)
+			goto find_next;
 
 		priv = symbol__priv(he->ms.sym);
-		if (priv->hist == NULL)
+		if (priv->hist == NULL) {
+find_next:
+			if (key == KEY_LEFT)
+				nd = rb_prev(nd);
+			else
+				nd = rb_next(nd);
 			continue;
+		}
 
-		annotate_sym(he);
-		/*
-		 * Since we have a hist_entry per IP for the same symbol, free
-		 * he->ms.sym->hist to signal we already processed this symbol.
-		 */
-		free(priv->hist);
-		priv->hist = NULL;
+		if (use_browser) {
+			key = hist_entry__tui_annotate(he);
+			if (is_exit_key(key))
+				break;
+			switch (key) {
+			case KEY_RIGHT:
+			case '\t':
+				nd = rb_next(nd);
+				break;
+			case KEY_LEFT:
+				if (nd == first)
+					continue;
+				nd = rb_prev(nd);
+			default:
+				break;
+			}
+		} else {
+			hist_entry__tty_annotate(he);
+			nd = rb_next(nd);
+			/*
+			 * Since we have a hist_entry per IP for the same
+			 * symbol, free he->ms.sym->hist to signal we already
+			 * processed this symbol.
+			 */
+			free(priv->hist);
+			priv->hist = NULL;
+		}
 	}
 }
 
@@ -416,6 +445,8 @@
 {
 	argc = parse_options(argc, argv, options, annotate_usage, 0);
 
+	setup_browser();
+
 	symbol_conf.priv_size = sizeof(struct sym_priv);
 	symbol_conf.try_vmlinux_path = true;
 
@@ -435,8 +466,6 @@
 		sym_hist_filter = argv[0];
 	}
 
-	setup_pager();
-
 	if (field_sep && *field_sep == '.') {
 		pr_err("'.' is the only non valid --field-separator argument\n");
 		return -1;
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 61c6d70..e4a4da3 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -65,8 +65,10 @@
 	int ret;
 
 	pr_debug("probe-definition(%d): %s\n", params.nevents, str);
-	if (++params.nevents == MAX_PROBES)
-		die("Too many probes (> %d) are specified.", MAX_PROBES);
+	if (++params.nevents == MAX_PROBES) {
+		pr_err("Too many probes (> %d) were specified.", MAX_PROBES);
+		return -1;
+	}
 
 	/* Parse a perf-probe command into event */
 	ret = parse_perf_probe_command(str, pev);
@@ -84,7 +86,9 @@
 	len = 0;
 	for (i = 0; i < argc; i++)
 		len += strlen(argv[i]) + 1;
-	buf = xzalloc(len + 1);
+	buf = zalloc(len + 1);
+	if (buf == NULL)
+		return -ENOMEM;
 	len = 0;
 	for (i = 0; i < argc; i++)
 		len += sprintf(&buf[len], "%s ", argv[i]);
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index cb46c7d..9bc8905 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -25,6 +25,7 @@
 
 #include <unistd.h>
 #include <sched.h>
+#include <sys/mman.h>
 
 enum write_mode_t {
 	WRITE_FORCE,
@@ -60,13 +61,8 @@
 static bool			inherit_stat			=  false;
 static bool			no_samples			=  false;
 static bool			sample_address			=  false;
-static bool			multiplex			=  false;
-static int			multiplex_fd			=     -1;
 
 static long			samples				=      0;
-static struct timeval		last_read;
-static struct timeval		this_read;
-
 static u64			bytes_written			=      0;
 
 static struct pollfd		*event_array;
@@ -86,7 +82,7 @@
 	unsigned int		prev;
 };
 
-static struct mmap_data		*mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
+static struct mmap_data		mmap_array[MAX_NR_CPUS];
 
 static unsigned long mmap_read_head(struct mmap_data *md)
 {
@@ -146,8 +142,6 @@
 	void *buf;
 	int diff;
 
-	gettimeofday(&this_read, NULL);
-
 	/*
 	 * If we're further behind than half the buffer, there's a chance
 	 * the writer will bite our tail and mess up the samples under us.
@@ -158,23 +152,13 @@
 	 */
 	diff = head - old;
 	if (diff < 0) {
-		struct timeval iv;
-		unsigned long msecs;
-
-		timersub(&this_read, &last_read, &iv);
-		msecs = iv.tv_sec*1000 + iv.tv_usec/1000;
-
-		fprintf(stderr, "WARNING: failed to keep up with mmap data."
-				"  Last read %lu msecs ago.\n", msecs);
-
+		fprintf(stderr, "WARNING: failed to keep up with mmap data\n");
 		/*
 		 * head points to a known good entry, start there.
 		 */
 		old = head;
 	}
 
-	last_read = this_read;
-
 	if (old != head)
 		samples++;
 
@@ -380,27 +364,30 @@
 		 */
 		if (group && group_fd == -1)
 			group_fd = fd[nr_cpu][counter][thread_index];
-		if (multiplex && multiplex_fd == -1)
-			multiplex_fd = fd[nr_cpu][counter][thread_index];
 
-		if (multiplex && fd[nr_cpu][counter][thread_index] != multiplex_fd) {
-
-			ret = ioctl(fd[nr_cpu][counter][thread_index], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd);
-			assert(ret != -1);
+		if (counter || thread_index) {
+			ret = ioctl(fd[nr_cpu][counter][thread_index],
+					PERF_EVENT_IOC_SET_OUTPUT,
+					fd[nr_cpu][0][0]);
+			if (ret) {
+				error("failed to set output: %d (%s)\n", errno,
+						strerror(errno));
+				exit(-1);
+			}
 		} else {
-			event_array[nr_poll].fd = fd[nr_cpu][counter][thread_index];
-			event_array[nr_poll].events = POLLIN;
-			nr_poll++;
-
-			mmap_array[nr_cpu][counter][thread_index].counter = counter;
-			mmap_array[nr_cpu][counter][thread_index].prev = 0;
-			mmap_array[nr_cpu][counter][thread_index].mask = mmap_pages*page_size - 1;
-			mmap_array[nr_cpu][counter][thread_index].base = mmap(NULL, (mmap_pages+1)*page_size,
+			mmap_array[nr_cpu].counter = counter;
+			mmap_array[nr_cpu].prev = 0;
+			mmap_array[nr_cpu].mask = mmap_pages*page_size - 1;
+			mmap_array[nr_cpu].base = mmap(NULL, (mmap_pages+1)*page_size,
 				PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter][thread_index], 0);
-			if (mmap_array[nr_cpu][counter][thread_index].base == MAP_FAILED) {
+			if (mmap_array[nr_cpu].base == MAP_FAILED) {
 				error("failed to mmap with %d (%s)\n", errno, strerror(errno));
 				exit(-1);
 			}
+
+			event_array[nr_poll].fd = fd[nr_cpu][counter][thread_index];
+			event_array[nr_poll].events = POLLIN;
+			nr_poll++;
 		}
 
 		if (filter != NULL) {
@@ -501,16 +488,11 @@
 
 static void mmap_read_all(void)
 {
-	int i, counter, thread;
+	int i;
 
 	for (i = 0; i < nr_cpu; i++) {
-		for (counter = 0; counter < nr_counters; counter++) {
-			for (thread = 0; thread < thread_num; thread++) {
-				if (mmap_array[i][counter][thread].base)
-					mmap_read(&mmap_array[i][counter][thread]);
-			}
-
-		}
+		if (mmap_array[i].base)
+			mmap_read(&mmap_array[i]);
 	}
 
 	if (perf_header__has_feat(&session->header, HEADER_TRACE_INFO))
@@ -834,8 +816,6 @@
 		    "Sample addresses"),
 	OPT_BOOLEAN('n', "no-samples", &no_samples,
 		    "don't sample"),
-	OPT_BOOLEAN('M', "multiplex", &multiplex,
-		    "multiplex counter output in a single channel"),
 	OPT_END()
 };
 
@@ -887,9 +867,7 @@
 	for (i = 0; i < MAX_NR_CPUS; i++) {
 		for (j = 0; j < MAX_COUNTERS; j++) {
 			fd[i][j] = malloc(sizeof(int)*thread_num);
-			mmap_array[i][j] = zalloc(
-				sizeof(struct mmap_data)*thread_num);
-			if (!fd[i][j] || !mmap_array[i][j])
+			if (!fd[i][j])
 				return -ENOMEM;
 		}
 	}
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 1d3c100..3592057 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -116,7 +116,7 @@
 	 * so we don't allocated the extra space needed because the stdio
 	 * code will not use it.
 	 */
-	if (use_browser)
+	if (use_browser > 0)
 		err = hist_entry__inc_addr_samples(he, al->addr);
 out_free_syms:
 	free(syms);
@@ -288,6 +288,38 @@
 	return ret + fprintf(fp, "\n#\n");
 }
 
+static int hists__tty_browse_tree(struct rb_root *tree, const char *help)
+{
+	struct rb_node *next = rb_first(tree);
+
+	while (next) {
+		struct hists *hists = rb_entry(next, struct hists, rb_node);
+		const char *evname = NULL;
+
+		if (rb_first(&hists->entries) != rb_last(&hists->entries))
+			evname = __event_name(hists->type, hists->config);
+
+		hists__fprintf_nr_sample_events(hists, evname, stdout);
+		hists__fprintf(hists, NULL, false, stdout);
+		fprintf(stdout, "\n\n");
+		next = rb_next(&hists->rb_node);
+	}
+
+	if (sort_order == default_sort_order &&
+	    parent_pattern == default_parent_pattern) {
+		fprintf(stdout, "#\n# (%s)\n#\n", help);
+
+		if (show_threads) {
+			bool style = !strcmp(pretty_printing_style, "raw");
+			perf_read_values_display(stdout, &show_threads_values,
+						 style);
+			perf_read_values_destroy(&show_threads_values);
+		}
+	}
+
+	return 0;
+}
+
 static int __cmd_report(void)
 {
 	int ret = -EINVAL;
@@ -330,34 +362,14 @@
 		hists = rb_entry(next, struct hists, rb_node);
 		hists__collapse_resort(hists);
 		hists__output_resort(hists);
-		if (use_browser)
-			hists__browse(hists, help, input_name);
-		else {
-			const char *evname = NULL;
-			if (rb_first(&session->hists.entries) !=
-			    rb_last(&session->hists.entries))
-				evname = __event_name(hists->type, hists->config);
-
-			hists__fprintf_nr_sample_events(hists, evname, stdout);
-
-			hists__fprintf(hists, NULL, false, stdout);
-			fprintf(stdout, "\n\n");
-		}
-
 		next = rb_next(&hists->rb_node);
 	}
 
-	if (!use_browser && sort_order == default_sort_order &&
-	    parent_pattern == default_parent_pattern) {
-		fprintf(stdout, "#\n# (%s)\n#\n", help);
+	if (use_browser > 0)
+		hists__tui_browse_tree(&session->hists_tree, help);
+	else
+		hists__tty_browse_tree(&session->hists_tree, help);
 
-		if (show_threads) {
-			bool style = !strcmp(pretty_printing_style, "raw");
-			perf_read_values_display(stdout, &show_threads_values,
-						 style);
-			perf_read_values_destroy(&show_threads_values);
-		}
-	}
 out_delete:
 	perf_session__delete(session);
 	return ret;
@@ -491,7 +503,7 @@
 	 * so don't allocate extra space that won't be used in the stdio
 	 * implementation.
 	 */
-	if (use_browser)
+	if (use_browser > 0)
 		symbol_conf.priv_size = sizeof(struct sym_priv);
 
 	if (symbol__init() < 0)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index ff8c413..9a39ca3 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -50,6 +50,7 @@
 
 #include <sys/prctl.h>
 #include <math.h>
+#include <locale.h>
 
 static struct perf_event_attr default_attrs[] = {
 
@@ -80,6 +81,8 @@
 static int			thread_num			=  0;
 static pid_t			child_pid			= -1;
 static bool			null_run			=  false;
+static bool			big_num				=  false;
+
 
 static int			*fd[MAX_NR_CPUS][MAX_COUNTERS];
 
@@ -377,7 +380,7 @@
 {
 	double msecs = avg / 1e6;
 
-	fprintf(stderr, " %14.6f  %-24s", msecs, event_name(counter));
+	fprintf(stderr, " %18.6f  %-24s", msecs, event_name(counter));
 
 	if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) {
 		fprintf(stderr, " # %10.3f CPUs ",
@@ -389,7 +392,10 @@
 {
 	double total, ratio = 0.0;
 
-	fprintf(stderr, " %14.0f  %-24s", avg, event_name(counter));
+	if (big_num)
+		fprintf(stderr, " %'18.0f  %-24s", avg, event_name(counter));
+	else
+		fprintf(stderr, " %18.0f  %-24s", avg, event_name(counter));
 
 	if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) {
 		total = avg_stats(&runtime_cycles_stats);
@@ -426,7 +432,7 @@
 	int scaled = event_scaled[counter];
 
 	if (scaled == -1) {
-		fprintf(stderr, " %14s  %-24s\n",
+		fprintf(stderr, " %18s  %-24s\n",
 			"<not counted>", event_name(counter));
 		return;
 	}
@@ -477,7 +483,7 @@
 		print_counter(counter);
 
 	fprintf(stderr, "\n");
-	fprintf(stderr, " %14.9f  seconds time elapsed",
+	fprintf(stderr, " %18.9f  seconds time elapsed",
 			avg_stats(&walltime_nsecs_stats)/1e9);
 	if (run_count > 1) {
 		fprintf(stderr, "   ( +- %7.3f%% )",
@@ -534,6 +540,8 @@
 		    "repeat command and print average + stddev (max: 100)"),
 	OPT_BOOLEAN('n', "null", &null_run,
 		    "null run - dont start any counters"),
+	OPT_BOOLEAN('B', "big-num", &big_num,
+		    "print large numbers with thousands\' separators"),
 	OPT_END()
 };
 
@@ -542,6 +550,8 @@
 	int status;
 	int i,j;
 
+	setlocale(LC_ALL, "");
+
 	argc = parse_options(argc, argv, options, stat_usage,
 		PARSE_OPT_STOP_AT_NON_OPTION);
 	if (!argc && target_pid == -1 && target_tid == -1)
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 08e0e5d..6e48711 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -15,15 +15,15 @@
 #include "util/parse-events.h"
 #include "util/debugfs.h"
 
-bool use_browser;
-
 const char perf_usage_string[] =
 	"perf [--version] [--help] COMMAND [ARGS]";
 
 const char perf_more_info_string[] =
 	"See 'perf help COMMAND' for more information on a specific command.";
 
+int use_browser = -1;
 static int use_pager = -1;
+
 struct pager_config {
 	const char *cmd;
 	int val;
@@ -49,6 +49,24 @@
 	return c.val;
 }
 
+static int tui_command_config(const char *var, const char *value, void *data)
+{
+	struct pager_config *c = data;
+	if (!prefixcmp(var, "tui.") && !strcmp(var + 4, c->cmd))
+		c->val = perf_config_bool(var, value);
+	return 0;
+}
+
+/* returns 0 for "no tui", 1 for "use tui", and -1 for "not specified" */
+static int check_tui_config(const char *cmd)
+{
+	struct pager_config c;
+	c.cmd = cmd;
+	c.val = -1;
+	perf_config(tui_command_config, &c);
+	return c.val;
+}
+
 static void commit_pager_choice(void)
 {
 	switch (use_pager) {
@@ -255,6 +273,9 @@
 	if (p->option & RUN_SETUP)
 		prefix = NULL; /* setup_perf_directory(); */
 
+	if (use_browser == -1)
+		use_browser = check_tui_config(p->cmd);
+
 	if (use_pager == -1 && p->option & RUN_SETUP)
 		use_pager = check_pager_config(p->cmd);
 	if (use_pager == -1 && p->option & USE_PAGER)
diff --git a/tools/perf/util/abspath.c b/tools/perf/util/abspath.c
index a791dd4..0e76aff 100644
--- a/tools/perf/util/abspath.c
+++ b/tools/perf/util/abspath.c
@@ -1,86 +1,5 @@
 #include "cache.h"
 
-/*
- * Do not use this for inspecting *tracked* content.  When path is a
- * symlink to a directory, we do not want to say it is a directory when
- * dealing with tracked content in the working tree.
- */
-static int is_directory(const char *path)
-{
-	struct stat st;
-	return (!stat(path, &st) && S_ISDIR(st.st_mode));
-}
-
-/* We allow "recursive" symbolic links. Only within reason, though. */
-#define MAXDEPTH 5
-
-const char *make_absolute_path(const char *path)
-{
-	static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1];
-	char cwd[1024] = "";
-	int buf_index = 1, len;
-
-	int depth = MAXDEPTH;
-	char *last_elem = NULL;
-	struct stat st;
-
-	if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
-		die ("Too long path: %.*s", 60, path);
-
-	while (depth--) {
-		if (!is_directory(buf)) {
-			char *last_slash = strrchr(buf, '/');
-			if (last_slash) {
-				*last_slash = '\0';
-				last_elem = xstrdup(last_slash + 1);
-			} else {
-				last_elem = xstrdup(buf);
-				*buf = '\0';
-			}
-		}
-
-		if (*buf) {
-			if (!*cwd && !getcwd(cwd, sizeof(cwd)))
-				die ("Could not get current working directory");
-
-			if (chdir(buf))
-				die ("Could not switch to '%s'", buf);
-		}
-		if (!getcwd(buf, PATH_MAX))
-			die ("Could not get current working directory");
-
-		if (last_elem) {
-			len = strlen(buf);
-
-			if (len + strlen(last_elem) + 2 > PATH_MAX)
-				die ("Too long path name: '%s/%s'",
-						buf, last_elem);
-			buf[len] = '/';
-			strcpy(buf + len + 1, last_elem);
-			free(last_elem);
-			last_elem = NULL;
-		}
-
-		if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) {
-			len = readlink(buf, next_buf, PATH_MAX);
-			if (len < 0)
-				die ("Invalid symlink: %s", buf);
-			if (PATH_MAX <= len)
-				die("symbolic link too long: %s", buf);
-			next_buf[len] = '\0';
-			buf = next_buf;
-			buf_index = 1 - buf_index;
-			next_buf = bufs[buf_index];
-		} else
-			break;
-	}
-
-	if (*cwd && chdir(cwd))
-		die ("Could not change back to '%s'", cwd);
-
-	return buf;
-}
-
 static const char *get_pwd_cwd(void)
 {
 	static char cwd[PATH_MAX + 1];
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 0f60a390..70c5cf8 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -6,6 +6,8 @@
  * Copyright (C) 2009, 2010 Red Hat Inc.
  * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
  */
+#include "util.h"
+#include <stdio.h>
 #include "build-id.h"
 #include "event.h"
 #include "symbol.h"
@@ -37,3 +39,23 @@
 	.mmap	= event__process_mmap,
 	.fork	= event__process_task,
 };
+
+char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
+{
+	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
+	const char *home;
+
+	if (!self->has_build_id)
+		return NULL;
+
+	build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex);
+	home = getenv("HOME");
+	if (bf == NULL) {
+		if (asprintf(&bf, "%s/%s/.build-id/%.2s/%s", home,
+			     DEBUG_CACHE_DIR, build_id_hex, build_id_hex + 2) < 0)
+			return NULL;
+	} else
+		snprintf(bf, size, "%s/%s/.build-id/%.2s/%s", home,
+			 DEBUG_CACHE_DIR, build_id_hex, build_id_hex + 2);
+	return bf;
+}
diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h
index 1d981d6..5dafb00 100644
--- a/tools/perf/util/build-id.h
+++ b/tools/perf/util/build-id.h
@@ -5,4 +5,6 @@
 
 extern struct perf_event_ops build_id__mark_dso_hit_ops;
 
+char *dso__build_id_filename(struct dso *self, char *bf, size_t size);
+
 #endif
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 4b9aab7..65fe664 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -13,56 +13,16 @@
 
 #define PERF_DIR_ENVIRONMENT "PERF_DIR"
 #define PERF_WORK_TREE_ENVIRONMENT "PERF_WORK_TREE"
-#define DEFAULT_PERF_DIR_ENVIRONMENT ".perf"
-#define DB_ENVIRONMENT "PERF_OBJECT_DIRECTORY"
-#define INDEX_ENVIRONMENT "PERF_INDEX_FILE"
-#define GRAFT_ENVIRONMENT "PERF_GRAFT_FILE"
-#define TEMPLATE_DIR_ENVIRONMENT "PERF_TEMPLATE_DIR"
-#define CONFIG_ENVIRONMENT "PERF_CONFIG"
 #define EXEC_PATH_ENVIRONMENT "PERF_EXEC_PATH"
-#define CEILING_DIRECTORIES_ENVIRONMENT "PERF_CEILING_DIRECTORIES"
-#define PERFATTRIBUTES_FILE ".perfattributes"
-#define INFOATTRIBUTES_FILE "info/attributes"
-#define ATTRIBUTE_MACRO_PREFIX "[attr]"
+#define DEFAULT_PERF_DIR_ENVIRONMENT ".perf"
 #define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR"
 
 typedef int (*config_fn_t)(const char *, const char *, void *);
 extern int perf_default_config(const char *, const char *, void *);
-extern int perf_config_from_file(config_fn_t fn, const char *, void *);
 extern int perf_config(config_fn_t fn, void *);
-extern int perf_parse_ulong(const char *, unsigned long *);
 extern int perf_config_int(const char *, const char *);
-extern unsigned long perf_config_ulong(const char *, const char *);
-extern int perf_config_bool_or_int(const char *, const char *, int *);
 extern int perf_config_bool(const char *, const char *);
-extern int perf_config_string(const char **, const char *, const char *);
-extern int perf_config_set(const char *, const char *);
-extern int perf_config_set_multivar(const char *, const char *, const char *, int);
-extern int perf_config_rename_section(const char *, const char *);
-extern const char *perf_etc_perfconfig(void);
-extern int check_repository_format_version(const char *var, const char *value, void *cb);
-extern int perf_config_system(void);
-extern int perf_config_global(void);
 extern int config_error_nonbool(const char *);
-extern const char *config_exclusive_filename;
-
-#define MAX_PERFNAME (1000)
-extern char perf_default_email[MAX_PERFNAME];
-extern char perf_default_name[MAX_PERFNAME];
-extern int user_ident_explicitly_given;
-
-extern const char *perf_log_output_encoding;
-extern const char *perf_mailmap_file;
-
-/* IO helper functions */
-extern void maybe_flush_or_die(FILE *, const char *);
-extern int copy_fd(int ifd, int ofd);
-extern int copy_file(const char *dst, const char *src, int mode);
-extern ssize_t write_in_full(int fd, const void *buf, size_t count);
-extern void write_or_die(int fd, const void *buf, size_t count);
-extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
-extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
-extern void fsync_or_die(int fd, const char *);
 
 /* pager.c */
 extern void setup_pager(void);
@@ -70,7 +30,7 @@
 extern int pager_in_use(void);
 extern int pager_use_color;
 
-extern bool use_browser;
+extern int use_browser;
 
 #ifdef NO_NEWT_SUPPORT
 static inline void setup_browser(void)
@@ -83,9 +43,6 @@
 void exit_browser(bool wait_for_ok);
 #endif
 
-extern const char *editor_program;
-extern const char *excludes_file;
-
 char *alias_lookup(const char *alias);
 int split_cmdline(char *cmdline, const char ***argv);
 
@@ -115,22 +72,12 @@
 	return path[0] == '/';
 }
 
-const char *make_absolute_path(const char *path);
 const char *make_nonrelative_path(const char *path);
-const char *make_relative_path(const char *abs, const char *base);
-int normalize_path_copy(char *dst, const char *src);
-int longest_ancestor_length(const char *path, const char *prefix_list);
 char *strip_path_suffix(const char *path, const char *suffix);
 
 extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
 extern char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
-/* perf_mkstemp() - create tmp file honoring TMPDIR variable */
-extern int perf_mkstemp(char *path, size_t len, const char *template);
 
-extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
-	__attribute__((format (printf, 3, 4)));
-extern char *perf_snpath(char *buf, size_t n, const char *fmt, ...)
-	__attribute__((format (printf, 3, 4)));
 extern char *perf_pathdup(const char *fmt, ...)
 	__attribute__((format (printf, 1, 2)));
 
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 21a52e0..62b69ad 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -15,6 +15,7 @@
 #include <errno.h>
 #include <math.h>
 
+#include "util.h"
 #include "callchain.h"
 
 bool ip_callchain__valid(struct ip_callchain *chain, event_t *event)
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 1cba1f5..1ca73e4 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -5,7 +5,6 @@
 #include <linux/list.h>
 #include <linux/rbtree.h>
 #include "event.h"
-#include "util.h"
 #include "symbol.h"
 
 enum chain_mode {
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 8784649..dabe892 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -16,7 +16,7 @@
 static int config_linenr;
 static int config_file_eof;
 
-const char *config_exclusive_filename = NULL;
+static const char *config_exclusive_filename;
 
 static int get_next_char(void)
 {
@@ -291,19 +291,6 @@
 	return 0;
 }
 
-int perf_parse_ulong(const char *value, unsigned long *ret)
-{
-	if (value && *value) {
-		char *end;
-		unsigned long val = strtoul(value, &end, 0);
-		if (!parse_unit_factor(end, &val))
-			return 0;
-		*ret = val;
-		return 1;
-	}
-	return 0;
-}
-
 static void die_bad_config(const char *name)
 {
 	if (config_file_name)
@@ -319,15 +306,7 @@
 	return ret;
 }
 
-unsigned long perf_config_ulong(const char *name, const char *value)
-{
-	unsigned long ret;
-	if (!perf_parse_ulong(value, &ret))
-		die_bad_config(name);
-	return ret;
-}
-
-int perf_config_bool_or_int(const char *name, const char *value, int *is_bool)
+static int perf_config_bool_or_int(const char *name, const char *value, int *is_bool)
 {
 	*is_bool = 1;
 	if (!value)
@@ -348,14 +327,6 @@
 	return !!perf_config_bool_or_int(name, value, &discard);
 }
 
-int perf_config_string(const char **dest, const char *var, const char *value)
-{
-	if (!value)
-		return config_error_nonbool(var);
-	*dest = strdup(value);
-	return 0;
-}
-
 static int perf_default_core_config(const char *var __used, const char *value __used)
 {
 	/* Add other config variables here and to Documentation/config.txt. */
@@ -371,7 +342,7 @@
 	return 0;
 }
 
-int perf_config_from_file(config_fn_t fn, const char *filename, void *data)
+static int perf_config_from_file(config_fn_t fn, const char *filename, void *data)
 {
 	int ret;
 	FILE *f = fopen(filename, "r");
@@ -389,7 +360,7 @@
 	return ret;
 }
 
-const char *perf_etc_perfconfig(void)
+static const char *perf_etc_perfconfig(void)
 {
 	static const char *system_wide;
 	if (!system_wide)
@@ -403,12 +374,12 @@
 	return v ? perf_config_bool(k, v) : def;
 }
 
-int perf_config_system(void)
+static int perf_config_system(void)
 {
 	return !perf_env_bool("PERF_CONFIG_NOSYSTEM", 0);
 }
 
-int perf_config_global(void)
+static int perf_config_global(void)
 {
 	return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0);
 }
@@ -450,426 +421,6 @@
 }
 
 /*
- * Find all the stuff for perf_config_set() below.
- */
-
-#define MAX_MATCHES 512
-
-static struct {
-	int baselen;
-	char* key;
-	int do_not_match;
-	regex_t* value_regex;
-	int multi_replace;
-	size_t offset[MAX_MATCHES];
-	enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
-	int seen;
-} store;
-
-static int matches(const char* key, const char* value)
-{
-	return !strcmp(key, store.key) &&
-		(store.value_regex == NULL ||
-		 (store.do_not_match ^
-		  !regexec(store.value_regex, value, 0, NULL, 0)));
-}
-
-static int store_aux(const char* key, const char* value, void *cb __used)
-{
-	int section_len;
-	const char *ep;
-
-	switch (store.state) {
-	case KEY_SEEN:
-		if (matches(key, value)) {
-			if (store.seen == 1 && store.multi_replace == 0) {
-				warning("%s has multiple values", key);
-			} else if (store.seen >= MAX_MATCHES) {
-				error("too many matches for %s", key);
-				return 1;
-			}
-
-			store.offset[store.seen] = ftell(config_file);
-			store.seen++;
-		}
-		break;
-	case SECTION_SEEN:
-		/*
-		 * What we are looking for is in store.key (both
-		 * section and var), and its section part is baselen
-		 * long.  We found key (again, both section and var).
-		 * We would want to know if this key is in the same
-		 * section as what we are looking for.  We already
-		 * know we are in the same section as what should
-		 * hold store.key.
-		 */
-		ep = strrchr(key, '.');
-		section_len = ep - key;
-
-		if ((section_len != store.baselen) ||
-		    memcmp(key, store.key, section_len+1)) {
-			store.state = SECTION_END_SEEN;
-			break;
-		}
-
-		/*
-		 * Do not increment matches: this is no match, but we
-		 * just made sure we are in the desired section.
-		 */
-		store.offset[store.seen] = ftell(config_file);
-		/* fallthru */
-	case SECTION_END_SEEN:
-	case START:
-		if (matches(key, value)) {
-			store.offset[store.seen] = ftell(config_file);
-			store.state = KEY_SEEN;
-			store.seen++;
-		} else {
-			if (strrchr(key, '.') - key == store.baselen &&
-			      !strncmp(key, store.key, store.baselen)) {
-					store.state = SECTION_SEEN;
-					store.offset[store.seen] = ftell(config_file);
-			}
-		}
-	default:
-		break;
-	}
-	return 0;
-}
-
-static int store_write_section(int fd, const char* key)
-{
-	const char *dot;
-	int i, success;
-	struct strbuf sb = STRBUF_INIT;
-
-	dot = memchr(key, '.', store.baselen);
-	if (dot) {
-		strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
-		for (i = dot - key + 1; i < store.baselen; i++) {
-			if (key[i] == '"' || key[i] == '\\')
-				strbuf_addch(&sb, '\\');
-			strbuf_addch(&sb, key[i]);
-		}
-		strbuf_addstr(&sb, "\"]\n");
-	} else {
-		strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
-	}
-
-	success = (write_in_full(fd, sb.buf, sb.len) == (ssize_t)sb.len);
-	strbuf_release(&sb);
-
-	return success;
-}
-
-static int store_write_pair(int fd, const char* key, const char* value)
-{
-	int i, success;
-	int length = strlen(key + store.baselen + 1);
-	const char *quote = "";
-	struct strbuf sb = STRBUF_INIT;
-
-	/*
-	 * Check to see if the value needs to be surrounded with a dq pair.
-	 * Note that problematic characters are always backslash-quoted; this
-	 * check is about not losing leading or trailing SP and strings that
-	 * follow beginning-of-comment characters (i.e. ';' and '#') by the
-	 * configuration parser.
-	 */
-	if (value[0] == ' ')
-		quote = "\"";
-	for (i = 0; value[i]; i++)
-		if (value[i] == ';' || value[i] == '#')
-			quote = "\"";
-	if (i && value[i - 1] == ' ')
-		quote = "\"";
-
-	strbuf_addf(&sb, "\t%.*s = %s",
-		    length, key + store.baselen + 1, quote);
-
-	for (i = 0; value[i]; i++)
-		switch (value[i]) {
-		case '\n':
-			strbuf_addstr(&sb, "\\n");
-			break;
-		case '\t':
-			strbuf_addstr(&sb, "\\t");
-			break;
-		case '"':
-		case '\\':
-			strbuf_addch(&sb, '\\');
-		default:
-			strbuf_addch(&sb, value[i]);
-			break;
-		}
-	strbuf_addf(&sb, "%s\n", quote);
-
-	success = (write_in_full(fd, sb.buf, sb.len) == (ssize_t)sb.len);
-	strbuf_release(&sb);
-
-	return success;
-}
-
-static ssize_t find_beginning_of_line(const char* contents, size_t size,
-	size_t offset_, int* found_bracket)
-{
-	size_t equal_offset = size, bracket_offset = size;
-	ssize_t offset;
-
-contline:
-	for (offset = offset_-2; offset > 0
-			&& contents[offset] != '\n'; offset--)
-		switch (contents[offset]) {
-			case '=': equal_offset = offset; break;
-			case ']': bracket_offset = offset; break;
-			default: break;
-		}
-	if (offset > 0 && contents[offset-1] == '\\') {
-		offset_ = offset;
-		goto contline;
-	}
-	if (bracket_offset < equal_offset) {
-		*found_bracket = 1;
-		offset = bracket_offset+1;
-	} else
-		offset++;
-
-	return offset;
-}
-
-int perf_config_set(const char* key, const char* value)
-{
-	return perf_config_set_multivar(key, value, NULL, 0);
-}
-
-/*
- * If value==NULL, unset in (remove from) config,
- * if value_regex!=NULL, disregard key/value pairs where value does not match.
- * if multi_replace==0, nothing, or only one matching key/value is replaced,
- *     else all matching key/values (regardless how many) are removed,
- *     before the new pair is written.
- *
- * Returns 0 on success.
- *
- * This function does this:
- *
- * - it locks the config file by creating ".perf/config.lock"
- *
- * - it then parses the config using store_aux() as validator to find
- *   the position on the key/value pair to replace. If it is to be unset,
- *   it must be found exactly once.
- *
- * - the config file is mmap()ed and the part before the match (if any) is
- *   written to the lock file, then the changed part and the rest.
- *
- * - the config file is removed and the lock file rename()d to it.
- *
- */
-int perf_config_set_multivar(const char* key, const char* value,
-	const char* value_regex, int multi_replace)
-{
-	int i, dot;
-	int fd = -1, in_fd;
-	int ret = 0;
-	char* config_filename;
-	const char* last_dot = strrchr(key, '.');
-
-	if (config_exclusive_filename)
-		config_filename = strdup(config_exclusive_filename);
-	else
-		config_filename = perf_pathdup("config");
-
-	/*
-	 * Since "key" actually contains the section name and the real
-	 * key name separated by a dot, we have to know where the dot is.
-	 */
-
-	if (last_dot == NULL) {
-		error("key does not contain a section: %s", key);
-		ret = 2;
-		goto out_free;
-	}
-	store.baselen = last_dot - key;
-
-	store.multi_replace = multi_replace;
-
-	/*
-	 * Validate the key and while at it, lower case it for matching.
-	 */
-	store.key = malloc(strlen(key) + 1);
-	dot = 0;
-	for (i = 0; key[i]; i++) {
-		unsigned char c = key[i];
-		if (c == '.')
-			dot = 1;
-		/* Leave the extended basename untouched.. */
-		if (!dot || i > store.baselen) {
-			if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
-				error("invalid key: %s", key);
-				free(store.key);
-				ret = 1;
-				goto out_free;
-			}
-			c = tolower(c);
-		} else if (c == '\n') {
-			error("invalid key (newline): %s", key);
-			free(store.key);
-			ret = 1;
-			goto out_free;
-		}
-		store.key[i] = c;
-	}
-	store.key[i] = 0;
-
-	/*
-	 * If .perf/config does not exist yet, write a minimal version.
-	 */
-	in_fd = open(config_filename, O_RDONLY);
-	if ( in_fd < 0 ) {
-		free(store.key);
-
-		if ( ENOENT != errno ) {
-			error("opening %s: %s", config_filename,
-			      strerror(errno));
-			ret = 3; /* same as "invalid config file" */
-			goto out_free;
-		}
-		/* if nothing to unset, error out */
-		if (value == NULL) {
-			ret = 5;
-			goto out_free;
-		}
-
-		store.key = (char*)key;
-		if (!store_write_section(fd, key) ||
-		    !store_write_pair(fd, key, value))
-			goto write_err_out;
-	} else {
-		struct stat st;
-		char *contents;
-		ssize_t contents_sz, copy_begin, copy_end;
-		int new_line = 0;
-
-		if (value_regex == NULL)
-			store.value_regex = NULL;
-		else {
-			if (value_regex[0] == '!') {
-				store.do_not_match = 1;
-				value_regex++;
-			} else
-				store.do_not_match = 0;
-
-			store.value_regex = (regex_t*)malloc(sizeof(regex_t));
-			if (regcomp(store.value_regex, value_regex,
-					REG_EXTENDED)) {
-				error("invalid pattern: %s", value_regex);
-				free(store.value_regex);
-				ret = 6;
-				goto out_free;
-			}
-		}
-
-		store.offset[0] = 0;
-		store.state = START;
-		store.seen = 0;
-
-		/*
-		 * After this, store.offset will contain the *end* offset
-		 * of the last match, or remain at 0 if no match was found.
-		 * As a side effect, we make sure to transform only a valid
-		 * existing config file.
-		 */
-		if (perf_config_from_file(store_aux, config_filename, NULL)) {
-			error("invalid config file %s", config_filename);
-			free(store.key);
-			if (store.value_regex != NULL) {
-				regfree(store.value_regex);
-				free(store.value_regex);
-			}
-			ret = 3;
-			goto out_free;
-		}
-
-		free(store.key);
-		if (store.value_regex != NULL) {
-			regfree(store.value_regex);
-			free(store.value_regex);
-		}
-
-		/* if nothing to unset, or too many matches, error out */
-		if ((store.seen == 0 && value == NULL) ||
-				(store.seen > 1 && multi_replace == 0)) {
-			ret = 5;
-			goto out_free;
-		}
-
-		fstat(in_fd, &st);
-		contents_sz = xsize_t(st.st_size);
-		contents = mmap(NULL, contents_sz, PROT_READ,
-			MAP_PRIVATE, in_fd, 0);
-		close(in_fd);
-
-		if (store.seen == 0)
-			store.seen = 1;
-
-		for (i = 0, copy_begin = 0; i < store.seen; i++) {
-			if (store.offset[i] == 0) {
-				store.offset[i] = copy_end = contents_sz;
-			} else if (store.state != KEY_SEEN) {
-				copy_end = store.offset[i];
-			} else
-				copy_end = find_beginning_of_line(
-					contents, contents_sz,
-					store.offset[i]-2, &new_line);
-
-			if (copy_end > 0 && contents[copy_end-1] != '\n')
-				new_line = 1;
-
-			/* write the first part of the config */
-			if (copy_end > copy_begin) {
-				if (write_in_full(fd, contents + copy_begin,
-						  copy_end - copy_begin) <
-				    copy_end - copy_begin)
-					goto write_err_out;
-				if (new_line &&
-				    write_in_full(fd, "\n", 1) != 1)
-					goto write_err_out;
-			}
-			copy_begin = store.offset[i];
-		}
-
-		/* write the pair (value == NULL means unset) */
-		if (value != NULL) {
-			if (store.state == START) {
-				if (!store_write_section(fd, key))
-					goto write_err_out;
-			}
-			if (!store_write_pair(fd, key, value))
-				goto write_err_out;
-		}
-
-		/* write the rest of the config */
-		if (copy_begin < contents_sz)
-			if (write_in_full(fd, contents + copy_begin,
-					  contents_sz - copy_begin) <
-			    contents_sz - copy_begin)
-				goto write_err_out;
-
-		munmap(contents, contents_sz);
-	}
-
-	ret = 0;
-
-out_free:
-	free(config_filename);
-	return ret;
-
-write_err_out:
-	goto out_free;
-
-}
-
-/*
  * Call this to report error for your variable that should not
  * get a boolean value (i.e. "[my] var" means "true").
  */
diff --git a/tools/perf/util/exec_cmd.c b/tools/perf/util/exec_cmd.c
index 2745605..67eeff5 100644
--- a/tools/perf/util/exec_cmd.c
+++ b/tools/perf/util/exec_cmd.c
@@ -53,8 +53,8 @@
 		slash--;
 
 	if (slash >= argv0) {
-		argv0_path = xstrndup(argv0, slash - argv0);
-		return slash + 1;
+		argv0_path = strndup(argv0, slash - argv0);
+		return argv0_path ? slash + 1 : NULL;
 	}
 
 	return argv0;
@@ -116,7 +116,7 @@
 	strbuf_release(&new_path);
 }
 
-const char **prepare_perf_cmd(const char **argv)
+static const char **prepare_perf_cmd(const char **argv)
 {
 	int argc;
 	const char **nargv;
diff --git a/tools/perf/util/exec_cmd.h b/tools/perf/util/exec_cmd.h
index 31647ac..bc4b915 100644
--- a/tools/perf/util/exec_cmd.h
+++ b/tools/perf/util/exec_cmd.h
@@ -5,7 +5,6 @@
 extern const char *perf_extract_argv0_path(const char *path);
 extern const char *perf_exec_path(void);
 extern void setup_path(void);
-extern const char **prepare_perf_cmd(const char **argv);
 extern int execv_perf_cmd(const char **argv); /* NULL terminated */
 extern int execl_perf_cmd(const char *cmd, ...);
 extern const char *system_path(const char *path);
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 8847bec..1f62435 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -221,29 +221,38 @@
 	return 0;
 }
 
+static int machine__write_buildid_table(struct machine *self, int fd)
+{
+	int err;
+	u16 kmisc = PERF_RECORD_MISC_KERNEL,
+	    umisc = PERF_RECORD_MISC_USER;
+
+	if (!machine__is_host(self)) {
+		kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
+		umisc = PERF_RECORD_MISC_GUEST_USER;
+	}
+
+	err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid,
+					  kmisc, fd);
+	if (err == 0)
+		err = __dsos__write_buildid_table(&self->user_dsos,
+						  self->pid, umisc, fd);
+	return err;
+}
+
 static int dsos__write_buildid_table(struct perf_header *header, int fd)
 {
 	struct perf_session *session = container_of(header,
 			struct perf_session, header);
 	struct rb_node *nd;
-	int err = 0;
-	u16 kmisc, umisc;
+	int err = machine__write_buildid_table(&session->host_machine, fd);
+
+	if (err)
+		return err;
 
 	for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
-		if (machine__is_host(pos)) {
-			kmisc = PERF_RECORD_MISC_KERNEL;
-			umisc = PERF_RECORD_MISC_USER;
-		} else {
-			kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
-			umisc = PERF_RECORD_MISC_GUEST_USER;
-		}
-
-		err = __dsos__write_buildid_table(&pos->kernel_dsos, pos->pid,
-						  kmisc, fd);
-		if (err == 0)
-			err = __dsos__write_buildid_table(&pos->user_dsos,
-							  pos->pid, umisc, fd);
+		err = machine__write_buildid_table(pos, fd);
 		if (err)
 			break;
 	}
@@ -363,12 +372,17 @@
 	return err;
 }
 
-static int dsos__cache_build_ids(struct perf_header *self)
+static int machine__cache_build_ids(struct machine *self, const char *debugdir)
 {
-	struct perf_session *session = container_of(self,
-			struct perf_session, header);
+	int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir);
+	ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir);
+	return ret;
+}
+
+static int perf_session__cache_build_ids(struct perf_session *self)
+{
 	struct rb_node *nd;
-	int ret = 0;
+	int ret;
 	char debugdir[PATH_MAX];
 
 	snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"),
@@ -377,25 +391,30 @@
 	if (mkdir(debugdir, 0755) != 0 && errno != EEXIST)
 		return -1;
 
-	for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
+	ret = machine__cache_build_ids(&self->host_machine, debugdir);
+
+	for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
-		ret |= __dsos__cache_build_ids(&pos->kernel_dsos, debugdir);
-		ret |= __dsos__cache_build_ids(&pos->user_dsos, debugdir);
+		ret |= machine__cache_build_ids(pos, debugdir);
 	}
 	return ret ? -1 : 0;
 }
 
-static bool dsos__read_build_ids(struct perf_header *self, bool with_hits)
+static bool machine__read_build_ids(struct machine *self, bool with_hits)
 {
-	bool ret = false;
-	struct perf_session *session = container_of(self,
-			struct perf_session, header);
-	struct rb_node *nd;
+	bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits);
+	ret |= __dsos__read_build_ids(&self->user_dsos, with_hits);
+	return ret;
+}
 
-	for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
+static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits)
+{
+	struct rb_node *nd;
+	bool ret = machine__read_build_ids(&self->host_machine, with_hits);
+
+	for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
-		ret |= __dsos__read_build_ids(&pos->kernel_dsos, with_hits);
-		ret |= __dsos__read_build_ids(&pos->user_dsos, with_hits);
+		ret |= machine__read_build_ids(pos, with_hits);
 	}
 
 	return ret;
@@ -404,12 +423,14 @@
 static int perf_header__adds_write(struct perf_header *self, int fd)
 {
 	int nr_sections;
+	struct perf_session *session;
 	struct perf_file_section *feat_sec;
 	int sec_size;
 	u64 sec_start;
 	int idx = 0, err;
 
-	if (dsos__read_build_ids(self, true))
+	session = container_of(self, struct perf_session, header);
+	if (perf_session__read_build_ids(session, true))
 		perf_header__set_feat(self, HEADER_BUILD_ID);
 
 	nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS);
@@ -450,7 +471,7 @@
 		}
 		buildid_sec->size = lseek(fd, 0, SEEK_CUR) -
 					  buildid_sec->offset;
-		dsos__cache_build_ids(self);
+		perf_session__cache_build_ids(session);
 	}
 
 	lseek(fd, sec_start, SEEK_SET);
@@ -490,7 +511,6 @@
 
 	lseek(fd, sizeof(f_header), SEEK_SET);
 
-
 	for (i = 0; i < self->attrs; i++) {
 		attr = self->attr[i];
 
diff --git a/tools/perf/util/help.c b/tools/perf/util/help.c
index fbb0097..6f2975a 100644
--- a/tools/perf/util/help.c
+++ b/tools/perf/util/help.c
@@ -4,28 +4,6 @@
 #include "levenshtein.h"
 #include "help.h"
 
-/* most GUI terminals set COLUMNS (although some don't export it) */
-static int term_columns(void)
-{
-	char *col_string = getenv("COLUMNS");
-	int n_cols;
-
-	if (col_string && (n_cols = atoi(col_string)) > 0)
-		return n_cols;
-
-#ifdef TIOCGWINSZ
-	{
-		struct winsize ws;
-		if (!ioctl(1, TIOCGWINSZ, &ws)) {
-			if (ws.ws_col)
-				return ws.ws_col;
-		}
-	}
-#endif
-
-	return 80;
-}
-
 void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
 {
 	struct cmdname *ent = malloc(sizeof(*ent) + len + 1);
@@ -96,9 +74,13 @@
 {
 	int cols = 1, rows;
 	int space = longest + 1; /* min 1 SP between words */
-	int max_cols = term_columns() - 1; /* don't print *on* the edge */
+	struct winsize win;
+	int max_cols;
 	int i, j;
 
+	get_term_dimensions(&win);
+	max_cols = win.ws_col - 1; /* don't print *on* the edge */
+
 	if (space < max_cols)
 		cols = max_cols / space;
 	rows = (cmds->cnt + cols - 1) / cols;
@@ -324,7 +306,7 @@
 
 		main_cmds.names[0] = NULL;
 		clean_cmdnames(&main_cmds);
-		fprintf(stderr, "WARNING: You called a Git program named '%s', "
+		fprintf(stderr, "WARNING: You called a perf program named '%s', "
 			"which does not exist.\n"
 			"Continuing under the assumption that you meant '%s'\n",
 			cmd, assumed);
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 9a71c94..cbf7eae 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1,4 +1,5 @@
 #include "util.h"
+#include "build-id.h"
 #include "hist.h"
 #include "session.h"
 #include "sort.h"
@@ -988,22 +989,42 @@
 	struct symbol *sym = self->ms.sym;
 	struct map *map = self->ms.map;
 	struct dso *dso = map->dso;
-	const char *filename = dso->long_name;
+	char *filename = dso__build_id_filename(dso, NULL, 0);
+	bool free_filename = true;
 	char command[PATH_MAX * 2];
 	FILE *file;
+	int err = 0;
 	u64 len;
 
-	if (!filename)
-		return -1;
+	if (filename == NULL) {
+		if (dso->has_build_id) {
+			pr_err("Can't annotate %s: not enough memory\n",
+			       sym->name);
+			return -ENOMEM;
+		}
+		goto fallback;
+	} else if (readlink(filename, command, sizeof(command)) < 0 ||
+		   strstr(command, "[kernel.kallsyms]") ||
+		   access(filename, R_OK)) {
+		free(filename);
+fallback:
+		/*
+		 * If we don't have build-ids or the build-id file isn't in the
+		 * cache, or is just a kallsyms file, well, lets hope that this
+		 * DSO is the same as when 'perf record' ran.
+		 */
+		filename = dso->long_name;
+		free_filename = false;
+	}
 
 	if (dso->origin == DSO__ORIG_KERNEL) {
 		if (dso->annotate_warned)
-			return 0;
+			goto out_free_filename;
+		err = -ENOENT;
 		dso->annotate_warned = 1;
 		pr_err("Can't annotate %s: No vmlinux file was found in the "
-		       "path:\n", sym->name);
-		vmlinux_path__fprintf(stderr);
-		return -1;
+		       "path\n", sym->name);
+		goto out_free_filename;
 	}
 
 	pr_debug("%s: filename=%s, sym=%s, start=%#Lx, end=%#Lx\n", __func__,
@@ -1025,14 +1046,17 @@
 
 	file = popen(command, "r");
 	if (!file)
-		return -1;
+		goto out_free_filename;
 
 	while (!feof(file))
 		if (hist_entry__parse_objdump_line(self, file, head) < 0)
 			break;
 
 	pclose(file);
-	return 0;
+out_free_filename:
+	if (free_filename)
+		free(filename);
+	return err;
 }
 
 void hists__inc_nr_events(struct hists *self, u32 type)
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 6f17dcd..83fa33a 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -98,12 +98,32 @@
 #ifdef NO_NEWT_SUPPORT
 static inline int hists__browse(struct hists *self __used,
 				const char *helpline __used,
-				const char *input_name __used)
+				const char *ev_name __used)
 {
 	return 0;
 }
+
+static inline int hists__tui_browse_tree(struct rb_root *self __used,
+					 const char *help __used)
+{
+	return 0;
+}
+
+static inline int hist_entry__tui_annotate(struct hist_entry *self __used)
+{
+	return 0;
+}
+#define KEY_LEFT -1
+#define KEY_RIGHT -2
 #else
+#include <newt.h>
 int hists__browse(struct hists *self, const char *helpline,
-		  const char *input_name);
+		  const char *ev_name);
+int hist_entry__tui_annotate(struct hist_entry *self);
+
+#define KEY_LEFT NEWT_KEY_LEFT
+#define KEY_RIGHT NEWT_KEY_RIGHT
+
+int hists__tui_browse_tree(struct rb_root *self, const char *help);
 #endif
 #endif	/* __PERF_HIST_H */
diff --git a/tools/perf/util/newt.c b/tools/perf/util/newt.c
index ccb7c5b..d54c540 100644
--- a/tools/perf/util/newt.c
+++ b/tools/perf/util/newt.c
@@ -1,7 +1,15 @@
 #define _GNU_SOURCE
 #include <stdio.h>
 #undef _GNU_SOURCE
-
+/*
+ * slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks
+ * the build if it isn't defined. Use the equivalent one that glibc
+ * has on features.h.
+ */
+#include <features.h>
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG
+#endif
 #include <slang.h>
 #include <stdlib.h>
 #include <newt.h>
@@ -227,6 +235,15 @@
 	return newtWinChoice(NULL, yes, no, (char *)msg) == 1;
 }
 
+static void ui__error_window(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	newtWinMessagev((char *)"Error", (char *)"Ok", (char *)fmt, ap);
+	va_end(ap);
+}
+
 #define HE_COLORSET_TOP		50
 #define HE_COLORSET_MEDIUM	51
 #define HE_COLORSET_NORMAL	52
@@ -375,8 +392,11 @@
 	newtFormAddHotKey(self->form, NEWT_KEY_DOWN);
 	newtFormAddHotKey(self->form, NEWT_KEY_PGUP);
 	newtFormAddHotKey(self->form, NEWT_KEY_PGDN);
+	newtFormAddHotKey(self->form, ' ');
 	newtFormAddHotKey(self->form, NEWT_KEY_HOME);
 	newtFormAddHotKey(self->form, NEWT_KEY_END);
+	newtFormAddHotKey(self->form, NEWT_KEY_TAB);
+	newtFormAddHotKey(self->form, NEWT_KEY_RIGHT);
 
 	if (ui_browser__refresh_entries(self) < 0)
 		return -1;
@@ -389,6 +409,8 @@
 
 		if (es->reason != NEWT_EXIT_HOTKEY)
 			break;
+		if (is_exit_key(es->u.key))
+			return es->u.key;
 		switch (es->u.key) {
 		case NEWT_KEY_DOWN:
 			if (self->index == self->nr_entries - 1)
@@ -411,6 +433,7 @@
 			}
 			break;
 		case NEWT_KEY_PGDN:
+		case ' ':
 			if (self->first_visible_entry_idx + self->height > self->nr_entries - 1)
 				break;
 
@@ -461,12 +484,10 @@
 			}
 		}
 			break;
-		case NEWT_KEY_ESCAPE:
+		case NEWT_KEY_RIGHT:
 		case NEWT_KEY_LEFT:
-		case CTRL('c'):
-		case 'Q':
-		case 'q':
-			return 0;
+		case NEWT_KEY_TAB:
+			return es->u.key;
 		default:
 			continue;
 		}
@@ -658,18 +679,24 @@
 	return ret;
 }
 
-static void hist_entry__annotate_browser(struct hist_entry *self)
+int hist_entry__tui_annotate(struct hist_entry *self)
 {
 	struct ui_browser browser;
 	struct newtExitStruct es;
 	struct objdump_line *pos, *n;
 	LIST_HEAD(head);
+	int ret;
 
 	if (self->ms.sym == NULL)
-		return;
+		return -1;
 
-	if (hist_entry__annotate(self, &head) < 0)
-		return;
+	if (self->ms.map->dso->annotate_warned)
+		return -1;
+
+	if (hist_entry__annotate(self, &head) < 0) {
+		ui__error_window(browser__last_msg);
+		return -1;
+	}
 
 	ui_helpline__push("Press <- or ESC to exit");
 
@@ -684,7 +711,7 @@
 	}
 
 	browser.width += 18; /* Percentage */
-	ui_browser__run(&browser, self->ms.sym->name, &es);
+	ret = ui_browser__run(&browser, self->ms.sym->name, &es);
 	newtFormDestroy(browser.form);
 	newtPopWindow();
 	list_for_each_entry_safe(pos, n, &head, node) {
@@ -692,6 +719,7 @@
 		objdump_line__free(pos);
 	}
 	ui_helpline__pop();
+	return ret;
 }
 
 static const void *newt__symbol_tree_get_current(newtComponent self)
@@ -814,6 +842,8 @@
 	newtFormAddHotKey(self->form, 'h');
 	newtFormAddHotKey(self->form, NEWT_KEY_F1);
 	newtFormAddHotKey(self->form, NEWT_KEY_RIGHT);
+	newtFormAddHotKey(self->form, NEWT_KEY_TAB);
+	newtFormAddHotKey(self->form, NEWT_KEY_UNTAB);
 	newtFormAddComponents(self->form, self->tree, NULL);
 	self->selection = newt__symbol_tree_get_current(self->tree);
 
@@ -845,7 +875,7 @@
 	return he ? he->thread : NULL;
 }
 
-static int hist_browser__title(char *bf, size_t size, const char *input_name,
+static int hist_browser__title(char *bf, size_t size, const char *ev_name,
 			       const struct dso *dso, const struct thread *thread)
 {
 	int printed = 0;
@@ -859,18 +889,18 @@
 		printed += snprintf(bf + printed, size - printed,
 				    "%sDSO: %s", thread ? " " : "",
 				    dso->short_name);
-	return printed ?: snprintf(bf, size, "Report: %s", input_name);
+	return printed ?: snprintf(bf, size, "Event: %s", ev_name);
 }
 
-int hists__browse(struct hists *self, const char *helpline, const char *input_name)
+int hists__browse(struct hists *self, const char *helpline, const char *ev_name)
 {
 	struct hist_browser *browser = hist_browser__new();
-	struct pstack *fstack = pstack__new(2);
+	struct pstack *fstack;
 	const struct thread *thread_filter = NULL;
 	const struct dso *dso_filter = NULL;
 	struct newtExitStruct es;
 	char msg[160];
-	int err = -1;
+	int key = -1;
 
 	if (browser == NULL)
 		return -1;
@@ -881,7 +911,7 @@
 
 	ui_helpline__push(helpline);
 
-	hist_browser__title(msg, sizeof(msg), input_name,
+	hist_browser__title(msg, sizeof(msg), ev_name,
 			    dso_filter, thread_filter);
 	if (hist_browser__populate(browser, self, msg) < 0)
 		goto out_free_stack;
@@ -899,11 +929,27 @@
 		dso = browser->selection->map ? browser->selection->map->dso : NULL;
 
 		if (es.reason == NEWT_EXIT_HOTKEY) {
-			if (es.u.key == NEWT_KEY_F1)
-				goto do_help;
+			key = es.u.key;
 
-			switch (toupper(es.u.key)) {
+			switch (key) {
+			case NEWT_KEY_F1:
+				goto do_help;
+			case NEWT_KEY_TAB:
+			case NEWT_KEY_UNTAB:
+				/*
+				 * Exit the browser, let hists__browser_tree
+				 * go to the next or previous
+				 */
+				goto out_free_stack;
+			default:;
+			}
+
+			key = toupper(key);
+			switch (key) {
 			case 'A':
+				if (browser->selection->map == NULL &&
+				    browser->selection->map->dso->annotate_warned)
+					continue;
 				goto do_annotate;
 			case 'D':
 				goto zoom_dso;
@@ -922,14 +968,14 @@
 				continue;
 			default:;
 			}
-			if (toupper(es.u.key) == 'Q' ||
-			    es.u.key == CTRL('c'))
-				break;
-			if (es.u.key == NEWT_KEY_ESCAPE) {
-				if (dialog_yesno("Do you really want to exit?"))
+			if (is_exit_key(key)) {
+				if (key == NEWT_KEY_ESCAPE) {
+					if (dialog_yesno("Do you really want to exit?"))
+						break;
+					else
+						continue;
+				} else
 					break;
-				else
-					continue;
 			}
 
 			if (es.u.key == NEWT_KEY_LEFT) {
@@ -947,6 +993,7 @@
 		}
 
 		if (browser->selection->sym != NULL &&
+		    !browser->selection->map->dso->annotate_warned &&
 		    asprintf(&options[nr_options], "Annotate %s",
 			     browser->selection->sym->name) > 0)
 			annotate = nr_options++;
@@ -981,6 +1028,7 @@
 			struct hist_entry *he;
 do_annotate:
 			if (browser->selection->map->dso->origin == DSO__ORIG_KERNEL) {
+				browser->selection->map->dso->annotate_warned = 1;
 				ui_helpline__puts("No vmlinux file found, can't "
 						 "annotate with just a "
 						 "kallsyms file");
@@ -991,7 +1039,7 @@
 			if (he == NULL)
 				continue;
 
-			hist_entry__annotate_browser(he);
+			hist_entry__tui_annotate(he);
 		} else if (choice == zoom_dso) {
 zoom_dso:
 			if (dso_filter) {
@@ -1008,7 +1056,7 @@
 				pstack__push(fstack, &dso_filter);
 			}
 			hists__filter_by_dso(self, dso_filter);
-			hist_browser__title(msg, sizeof(msg), input_name,
+			hist_browser__title(msg, sizeof(msg), ev_name,
 					    dso_filter, thread_filter);
 			if (hist_browser__populate(browser, self, msg) < 0)
 				goto out;
@@ -1027,18 +1075,49 @@
 				pstack__push(fstack, &thread_filter);
 			}
 			hists__filter_by_thread(self, thread_filter);
-			hist_browser__title(msg, sizeof(msg), input_name,
+			hist_browser__title(msg, sizeof(msg), ev_name,
 					    dso_filter, thread_filter);
 			if (hist_browser__populate(browser, self, msg) < 0)
 				goto out;
 		}
 	}
-	err = 0;
 out_free_stack:
 	pstack__delete(fstack);
 out:
 	hist_browser__delete(browser);
-	return err;
+	return key;
+}
+
+int hists__tui_browse_tree(struct rb_root *self, const char *help)
+{
+	struct rb_node *first = rb_first(self), *nd = first, *next;
+	int key = 0;
+
+	while (nd) {
+		struct hists *hists = rb_entry(nd, struct hists, rb_node);
+		const char *ev_name = __event_name(hists->type, hists->config);
+
+		key = hists__browse(hists, help, ev_name);
+
+		if (is_exit_key(key))
+			break;
+
+		switch (key) {
+		case NEWT_KEY_TAB:
+			next = rb_next(nd);
+			if (next)
+				nd = next;
+			break;
+		case NEWT_KEY_UNTAB:
+			if (nd == first)
+				continue;
+			nd = rb_prev(nd);
+		default:
+			break;
+		}
+	}
+
+	return key;
 }
 
 static struct newtPercentTreeColors {
@@ -1058,10 +1137,13 @@
 void setup_browser(void)
 {
 	struct newtPercentTreeColors *c = &defaultPercentTreeColors;
-	if (!isatty(1))
-		return;
 
-	use_browser = true;
+	if (!isatty(1) || !use_browser || dump_trace) {
+		setup_pager();
+		return;
+	}
+
+	use_browser = 1;
 	newtInit();
 	newtCls();
 	ui_helpline__puts(" ");
@@ -1074,7 +1156,7 @@
 
 void exit_browser(bool wait_for_ok)
 {
-	if (use_browser) {
+	if (use_browser > 0) {
 		if (wait_for_ok) {
 			char title[] = "Fatal Error", ok[] = "Ok";
 			newtWinMessage(title, ok, browser__last_msg);
diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c
index fd1f2fa..58a470d 100644
--- a/tools/perf/util/path.c
+++ b/tools/perf/util/path.c
@@ -54,21 +54,6 @@
 	return path;
 }
 
-char *mksnpath(char *buf, size_t n, const char *fmt, ...)
-{
-	va_list args;
-	unsigned len;
-
-	va_start(args, fmt);
-	len = vsnprintf(buf, n, fmt, args);
-	va_end(args);
-	if (len >= n) {
-		strlcpy(buf, bad_path, n);
-		return buf;
-	}
-	return cleanup_path(buf);
-}
-
 static char *perf_vsnpath(char *buf, size_t n, const char *fmt, va_list args)
 {
 	const char *perf_dir = get_perf_dir();
@@ -89,15 +74,6 @@
 	return buf;
 }
 
-char *perf_snpath(char *buf, size_t n, const char *fmt, ...)
-{
-	va_list args;
-	va_start(args, fmt);
-	(void)perf_vsnpath(buf, n, fmt, args);
-	va_end(args);
-	return buf;
-}
-
 char *perf_pathdup(const char *fmt, ...)
 {
 	char path[PATH_MAX];
@@ -143,184 +119,6 @@
 	return cleanup_path(pathname);
 }
 
-
-/* perf_mkstemp() - create tmp file honoring TMPDIR variable */
-int perf_mkstemp(char *path, size_t len, const char *template)
-{
-	const char *tmp;
-	size_t n;
-
-	tmp = getenv("TMPDIR");
-	if (!tmp)
-		tmp = "/tmp";
-	n = snprintf(path, len, "%s/%s", tmp, template);
-	if (len <= n) {
-		errno = ENAMETOOLONG;
-		return -1;
-	}
-	return mkstemp(path);
-}
-
-
-const char *make_relative_path(const char *abs_path, const char *base)
-{
-	static char buf[PATH_MAX + 1];
-	int baselen;
-
-	if (!base)
-		return abs_path;
-
-	baselen = strlen(base);
-	if (prefixcmp(abs_path, base))
-		return abs_path;
-	if (abs_path[baselen] == '/')
-		baselen++;
-	else if (base[baselen - 1] != '/')
-		return abs_path;
-
-	strcpy(buf, abs_path + baselen);
-
-	return buf;
-}
-
-/*
- * It is okay if dst == src, but they should not overlap otherwise.
- *
- * Performs the following normalizations on src, storing the result in dst:
- * - Ensures that components are separated by '/' (Windows only)
- * - Squashes sequences of '/'.
- * - Removes "." components.
- * - Removes ".." components, and the components the precede them.
- * Returns failure (non-zero) if a ".." component appears as first path
- * component anytime during the normalization. Otherwise, returns success (0).
- *
- * Note that this function is purely textual.  It does not follow symlinks,
- * verify the existence of the path, or make any system calls.
- */
-int normalize_path_copy(char *dst, const char *src)
-{
-	char *dst0;
-
-	if (has_dos_drive_prefix(src)) {
-		*dst++ = *src++;
-		*dst++ = *src++;
-	}
-	dst0 = dst;
-
-	if (is_dir_sep(*src)) {
-		*dst++ = '/';
-		while (is_dir_sep(*src))
-			src++;
-	}
-
-	for (;;) {
-		char c = *src;
-
-		/*
-		 * A path component that begins with . could be
-		 * special:
-		 * (1) "." and ends   -- ignore and terminate.
-		 * (2) "./"           -- ignore them, eat slash and continue.
-		 * (3) ".." and ends  -- strip one and terminate.
-		 * (4) "../"          -- strip one, eat slash and continue.
-		 */
-		if (c == '.') {
-			if (!src[1]) {
-				/* (1) */
-				src++;
-			} else if (is_dir_sep(src[1])) {
-				/* (2) */
-				src += 2;
-				while (is_dir_sep(*src))
-					src++;
-				continue;
-			} else if (src[1] == '.') {
-				if (!src[2]) {
-					/* (3) */
-					src += 2;
-					goto up_one;
-				} else if (is_dir_sep(src[2])) {
-					/* (4) */
-					src += 3;
-					while (is_dir_sep(*src))
-						src++;
-					goto up_one;
-				}
-			}
-		}
-
-		/* copy up to the next '/', and eat all '/' */
-		while ((c = *src++) != '\0' && !is_dir_sep(c))
-			*dst++ = c;
-		if (is_dir_sep(c)) {
-			*dst++ = '/';
-			while (is_dir_sep(c))
-				c = *src++;
-			src--;
-		} else if (!c)
-			break;
-		continue;
-
-	up_one:
-		/*
-		 * dst0..dst is prefix portion, and dst[-1] is '/';
-		 * go up one level.
-		 */
-		dst--;	/* go to trailing '/' */
-		if (dst <= dst0)
-			return -1;
-		/* Windows: dst[-1] cannot be backslash anymore */
-		while (dst0 < dst && dst[-1] != '/')
-			dst--;
-	}
-	*dst = '\0';
-	return 0;
-}
-
-/*
- * path = Canonical absolute path
- * prefix_list = Colon-separated list of absolute paths
- *
- * Determines, for each path in prefix_list, whether the "prefix" really
- * is an ancestor directory of path.  Returns the length of the longest
- * ancestor directory, excluding any trailing slashes, or -1 if no prefix
- * is an ancestor.  (Note that this means 0 is returned if prefix_list is
- * "/".) "/foo" is not considered an ancestor of "/foobar".  Directories
- * are not considered to be their own ancestors.  path must be in a
- * canonical form: empty components, or "." or ".." components are not
- * allowed.  prefix_list may be null, which is like "".
- */
-int longest_ancestor_length(const char *path, const char *prefix_list)
-{
-	char buf[PATH_MAX+1];
-	const char *ceil, *colon;
-	int len, max_len = -1;
-
-	if (prefix_list == NULL || !strcmp(path, "/"))
-		return -1;
-
-	for (colon = ceil = prefix_list; *colon; ceil = colon+1) {
-		for (colon = ceil; *colon && *colon != PATH_SEP; colon++);
-		len = colon - ceil;
-		if (len == 0 || len > PATH_MAX || !is_absolute_path(ceil))
-			continue;
-		strlcpy(buf, ceil, len+1);
-		if (normalize_path_copy(buf, buf) < 0)
-			continue;
-		len = strlen(buf);
-		if (len > 0 && buf[len-1] == '/')
-			buf[--len] = '\0';
-
-		if (!strncmp(path, buf, len) &&
-		    path[len] == '/' &&
-		    len > max_len) {
-			max_len = len;
-		}
-	}
-
-	return max_len;
-}
-
 /* strip arbitrary amount of directory separators at end of path */
 static inline int chomp_trailing_dir_sep(const char *path, int len)
 {
@@ -354,5 +152,5 @@
 
 	if (path_len && !is_dir_sep(path[path_len - 1]))
 		return NULL;
-	return xstrndup(path, chomp_trailing_dir_sep(path, path_len));
+	return strndup(path, chomp_trailing_dir_sep(path, path_len));
 }
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 562b144..d964cb1 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -668,6 +668,7 @@
 	ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1);
 	if (ret <= 0 || nops == 0) {
 		pf->fb_ops = NULL;
+#if _ELFUTILS_PREREQ(0, 142)
 	} else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa &&
 		   pf->cfi != NULL) {
 		Dwarf_Frame *frame;
@@ -677,6 +678,7 @@
 				   (uintmax_t)pf->addr);
 			return -ENOENT;
 		}
+#endif
 	}
 
 	/* Find each argument */
@@ -741,32 +743,36 @@
 				 const char *fname, const char *pat)
 {
 	char *fbuf, *p1, *p2;
-	int fd, ret, line, nlines = 0;
+	int fd, line, nlines = -1;
 	struct stat st;
 
 	fd = open(fname, O_RDONLY);
 	if (fd < 0) {
 		pr_warning("Failed to open %s: %s\n", fname, strerror(-fd));
-		return fd;
+		return -errno;
 	}
 
-	ret = fstat(fd, &st);
-	if (ret < 0) {
+	if (fstat(fd, &st) < 0) {
 		pr_warning("Failed to get the size of %s: %s\n",
 			   fname, strerror(errno));
-		return ret;
+		nlines = -errno;
+		goto out_close;
 	}
-	fbuf = xmalloc(st.st_size + 2);
-	ret = read(fd, fbuf, st.st_size);
-	if (ret < 0) {
+
+	nlines = -ENOMEM;
+	fbuf = malloc(st.st_size + 2);
+	if (fbuf == NULL)
+		goto out_close;
+	if (read(fd, fbuf, st.st_size) < 0) {
 		pr_warning("Failed to read %s: %s\n", fname, strerror(errno));
-		return ret;
+		nlines = -errno;
+		goto out_free_fbuf;
 	}
-	close(fd);
 	fbuf[st.st_size] = '\n';	/* Dummy line */
 	fbuf[st.st_size + 1] = '\0';
 	p1 = fbuf;
 	line = 1;
+	nlines = 0;
 	while ((p2 = strchr(p1, '\n')) != NULL) {
 		*p2 = '\0';
 		if (strlazymatch(p1, pat)) {
@@ -776,7 +782,10 @@
 		line++;
 		p1 = p2 + 1;
 	}
+out_free_fbuf:
 	free(fbuf);
+out_close:
+	close(fd);
 	return nlines;
 }
 
@@ -953,11 +962,15 @@
 	if (!dbg) {
 		pr_warning("No dwarf info found in the vmlinux - "
 			"please rebuild with CONFIG_DEBUG_INFO=y.\n");
+		free(pf.tevs);
+		*tevs = NULL;
 		return -EBADF;
 	}
 
+#if _ELFUTILS_PREREQ(0, 142)
 	/* Get the call frame information from this dwarf */
 	pf.cfi = dwarf_getcfi(dbg);
+#endif
 
 	off = 0;
 	line_list__init(&pf.lcache);
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index 66f1980..e1f61dc 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -29,6 +29,7 @@
 
 #include <dwarf.h>
 #include <libdw.h>
+#include <version.h>
 
 struct probe_finder {
 	struct perf_probe_event	*pev;		/* Target probe event */
@@ -44,7 +45,9 @@
 	struct list_head	lcache;		/* Line cache for lazy match */
 
 	/* For variable searching */
+#if _ELFUTILS_PREREQ(0, 142)
 	Dwarf_CFI		*cfi;		/* Call Frame Information */
+#endif
 	Dwarf_Op		*fb_ops;	/* Frame base attribute */
 	struct perf_probe_arg	*pvar;		/* Current target variable */
 	struct kprobe_trace_arg	*tvar;		/* Current result variable */
diff --git a/tools/perf/util/quote.c b/tools/perf/util/quote.c
index 2726fe4..01f0324 100644
--- a/tools/perf/util/quote.c
+++ b/tools/perf/util/quote.c
@@ -1,8 +1,6 @@
 #include "cache.h"
 #include "quote.h"
 
-int quote_path_fully = 1;
-
 /* Help to copy the thing properly quoted for the shell safety.
  * any single quote is replaced with '\'', any exclamation point
  * is replaced with '\!', and the whole thing is enclosed in a
@@ -19,7 +17,7 @@
 	return (c == '\'' || c == '!');
 }
 
-void sq_quote_buf(struct strbuf *dst, const char *src)
+static void sq_quote_buf(struct strbuf *dst, const char *src)
 {
 	char *to_free = NULL;
 
@@ -41,23 +39,6 @@
 	free(to_free);
 }
 
-void sq_quote_print(FILE *stream, const char *src)
-{
-	char c;
-
-	fputc('\'', stream);
-	while ((c = *src++)) {
-		if (need_bs_quote(c)) {
-			fputs("'\\", stream);
-			fputc(c, stream);
-			fputc('\'', stream);
-		} else {
-			fputc(c, stream);
-		}
-	}
-	fputc('\'', stream);
-}
-
 void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen)
 {
 	int i;
@@ -71,415 +52,3 @@
 			die("Too many or long arguments");
 	}
 }
-
-char *sq_dequote_step(char *arg, char **next)
-{
-	char *dst = arg;
-	char *src = arg;
-	char c;
-
-	if (*src != '\'')
-		return NULL;
-	for (;;) {
-		c = *++src;
-		if (!c)
-			return NULL;
-		if (c != '\'') {
-			*dst++ = c;
-			continue;
-		}
-		/* We stepped out of sq */
-		switch (*++src) {
-		case '\0':
-			*dst = 0;
-			if (next)
-				*next = NULL;
-			return arg;
-		case '\\':
-			c = *++src;
-			if (need_bs_quote(c) && *++src == '\'') {
-				*dst++ = c;
-				continue;
-			}
-		/* Fallthrough */
-		default:
-			if (!next || !isspace(*src))
-				return NULL;
-			do {
-				c = *++src;
-			} while (isspace(c));
-			*dst = 0;
-			*next = src;
-			return arg;
-		}
-	}
-}
-
-char *sq_dequote(char *arg)
-{
-	return sq_dequote_step(arg, NULL);
-}
-
-int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc)
-{
-	char *next = arg;
-
-	if (!*arg)
-		return 0;
-	do {
-		char *dequoted = sq_dequote_step(next, &next);
-		if (!dequoted)
-			return -1;
-		ALLOC_GROW(*argv, *nr + 1, *alloc);
-		(*argv)[(*nr)++] = dequoted;
-	} while (next);
-
-	return 0;
-}
-
-/* 1 means: quote as octal
- * 0 means: quote as octal if (quote_path_fully)
- * -1 means: never quote
- * c: quote as "\\c"
- */
-#define X8(x)   x, x, x, x, x, x, x, x
-#define X16(x)  X8(x), X8(x)
-static signed char const sq_lookup[256] = {
-	/*           0    1    2    3    4    5    6    7 */
-	/* 0x00 */   1,   1,   1,   1,   1,   1,   1, 'a',
-	/* 0x08 */ 'b', 't', 'n', 'v', 'f', 'r',   1,   1,
-	/* 0x10 */ X16(1),
-	/* 0x20 */  -1,  -1, '"',  -1,  -1,  -1,  -1,  -1,
-	/* 0x28 */ X16(-1), X16(-1), X16(-1),
-	/* 0x58 */  -1,  -1,  -1,  -1,'\\',  -1,  -1,  -1,
-	/* 0x60 */ X16(-1), X8(-1),
-	/* 0x78 */  -1,  -1,  -1,  -1,  -1,  -1,  -1,   1,
-	/* 0x80 */ /* set to 0 */
-};
-
-static inline int sq_must_quote(char c)
-{
-	return sq_lookup[(unsigned char)c] + quote_path_fully > 0;
-}
-
-/*
- * Returns the longest prefix not needing a quote up to maxlen if
- * positive.
- * This stops at the first \0 because it's marked as a character
- * needing an escape.
- */
-static ssize_t next_quote_pos(const char *s, ssize_t maxlen)
-{
-	ssize_t len;
-
-	if (maxlen < 0) {
-		for (len = 0; !sq_must_quote(s[len]); len++);
-	} else {
-		for (len = 0; len < maxlen && !sq_must_quote(s[len]); len++);
-	}
-	return len;
-}
-
-/*
- * C-style name quoting.
- *
- * (1) if sb and fp are both NULL, inspect the input name and counts the
- *     number of bytes that are needed to hold c_style quoted version of name,
- *     counting the double quotes around it but not terminating NUL, and
- *     returns it.
- *     However, if name does not need c_style quoting, it returns 0.
- *
- * (2) if sb or fp are not NULL, it emits the c_style quoted version
- *     of name, enclosed with double quotes if asked and needed only.
- *     Return value is the same as in (1).
- */
-static size_t quote_c_style_counted(const char *name, ssize_t maxlen,
-                                    struct strbuf *sb, FILE *fp, int no_dq)
-{
-#define EMIT(c)							\
-	do {							\
-		if (sb) strbuf_addch(sb, (c));			\
-		if (fp) fputc((c), fp);				\
-		count++;					\
-	} while (0)
-
-#define EMITBUF(s, l)						\
-	do {							\
-		int __ret;					\
-		if (sb) strbuf_add(sb, (s), (l));		\
-		if (fp) __ret = fwrite((s), (l), 1, fp);	\
-		count += (l);					\
-	} while (0)
-
-	ssize_t len, count = 0;
-	const char *p = name;
-
-	for (;;) {
-		int ch;
-
-		len = next_quote_pos(p, maxlen);
-		if (len == maxlen || !p[len])
-			break;
-
-		if (!no_dq && p == name)
-			EMIT('"');
-
-		EMITBUF(p, len);
-		EMIT('\\');
-		p += len;
-		ch = (unsigned char)*p++;
-		if (sq_lookup[ch] >= ' ') {
-			EMIT(sq_lookup[ch]);
-		} else {
-			EMIT(((ch >> 6) & 03) + '0');
-			EMIT(((ch >> 3) & 07) + '0');
-			EMIT(((ch >> 0) & 07) + '0');
-		}
-	}
-
-	EMITBUF(p, len);
-	if (p == name)   /* no ending quote needed */
-		return 0;
-
-	if (!no_dq)
-		EMIT('"');
-	return count;
-}
-
-size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq)
-{
-	return quote_c_style_counted(name, -1, sb, fp, nodq);
-}
-
-void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq)
-{
-	if (quote_c_style(prefix, NULL, NULL, 0) ||
-	    quote_c_style(path, NULL, NULL, 0)) {
-		if (!nodq)
-			strbuf_addch(sb, '"');
-		quote_c_style(prefix, sb, NULL, 1);
-		quote_c_style(path, sb, NULL, 1);
-		if (!nodq)
-			strbuf_addch(sb, '"');
-	} else {
-		strbuf_addstr(sb, prefix);
-		strbuf_addstr(sb, path);
-	}
-}
-
-void write_name_quoted(const char *name, FILE *fp, int terminator)
-{
-	if (terminator) {
-		quote_c_style(name, NULL, fp, 0);
-	} else {
-		fputs(name, fp);
-	}
-	fputc(terminator, fp);
-}
-
-void write_name_quotedpfx(const char *pfx, ssize_t pfxlen,
-			  const char *name, FILE *fp, int terminator)
-{
-	int needquote = 0;
-
-	if (terminator) {
-		needquote = next_quote_pos(pfx, pfxlen) < pfxlen
-			|| name[next_quote_pos(name, -1)];
-	}
-	if (needquote) {
-		fputc('"', fp);
-		quote_c_style_counted(pfx, pfxlen, NULL, fp, 1);
-		quote_c_style(name, NULL, fp, 1);
-		fputc('"', fp);
-	} else {
-		int ret;
-
-		ret = fwrite(pfx, pfxlen, 1, fp);
-		fputs(name, fp);
-	}
-	fputc(terminator, fp);
-}
-
-/* quote path as relative to the given prefix */
-char *quote_path_relative(const char *in, int len,
-			  struct strbuf *out, const char *prefix)
-{
-	int needquote;
-
-	if (len < 0)
-		len = strlen(in);
-
-	/* "../" prefix itself does not need quoting, but "in" might. */
-	needquote = (next_quote_pos(in, len) < len);
-	strbuf_setlen(out, 0);
-	strbuf_grow(out, len);
-
-	if (needquote)
-		strbuf_addch(out, '"');
-	if (prefix) {
-		int off = 0;
-		while (off < len && prefix[off] && prefix[off] == in[off])
-			if (prefix[off] == '/') {
-				prefix += off + 1;
-				in += off + 1;
-				len -= off + 1;
-				off = 0;
-			} else
-				off++;
-
-		for (; *prefix; prefix++)
-			if (*prefix == '/')
-				strbuf_addstr(out, "../");
-	}
-
-	quote_c_style_counted (in, len, out, NULL, 1);
-
-	if (needquote)
-		strbuf_addch(out, '"');
-	if (!out->len)
-		strbuf_addstr(out, "./");
-
-	return out->buf;
-}
-
-/*
- * C-style name unquoting.
- *
- * Quoted should point at the opening double quote.
- * + Returns 0 if it was able to unquote the string properly, and appends the
- *   result in the strbuf `sb'.
- * + Returns -1 in case of error, and doesn't touch the strbuf. Though note
- *   that this function will allocate memory in the strbuf, so calling
- *   strbuf_release is mandatory whichever result unquote_c_style returns.
- *
- * Updates endp pointer to point at one past the ending double quote if given.
- */
-int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp)
-{
-	size_t oldlen = sb->len, len;
-	int ch, ac;
-
-	if (*quoted++ != '"')
-		return -1;
-
-	for (;;) {
-		len = strcspn(quoted, "\"\\");
-		strbuf_add(sb, quoted, len);
-		quoted += len;
-
-		switch (*quoted++) {
-		  case '"':
-			if (endp)
-				*endp = quoted;
-			return 0;
-		  case '\\':
-			break;
-		  default:
-			goto error;
-		}
-
-		switch ((ch = *quoted++)) {
-		case 'a': ch = '\a'; break;
-		case 'b': ch = '\b'; break;
-		case 'f': ch = '\f'; break;
-		case 'n': ch = '\n'; break;
-		case 'r': ch = '\r'; break;
-		case 't': ch = '\t'; break;
-		case 'v': ch = '\v'; break;
-
-		case '\\': case '"':
-			break; /* verbatim */
-
-		/* octal values with first digit over 4 overflow */
-		case '0': case '1': case '2': case '3':
-					ac = ((ch - '0') << 6);
-			if ((ch = *quoted++) < '0' || '7' < ch)
-				goto error;
-					ac |= ((ch - '0') << 3);
-			if ((ch = *quoted++) < '0' || '7' < ch)
-				goto error;
-					ac |= (ch - '0');
-					ch = ac;
-					break;
-				default:
-			goto error;
-			}
-		strbuf_addch(sb, ch);
-		}
-
-  error:
-	strbuf_setlen(sb, oldlen);
-	return -1;
-}
-
-/* quoting as a string literal for other languages */
-
-void perl_quote_print(FILE *stream, const char *src)
-{
-	const char sq = '\'';
-	const char bq = '\\';
-	char c;
-
-	fputc(sq, stream);
-	while ((c = *src++)) {
-		if (c == sq || c == bq)
-			fputc(bq, stream);
-		fputc(c, stream);
-	}
-	fputc(sq, stream);
-}
-
-void python_quote_print(FILE *stream, const char *src)
-{
-	const char sq = '\'';
-	const char bq = '\\';
-	const char nl = '\n';
-	char c;
-
-	fputc(sq, stream);
-	while ((c = *src++)) {
-		if (c == nl) {
-			fputc(bq, stream);
-			fputc('n', stream);
-			continue;
-		}
-		if (c == sq || c == bq)
-			fputc(bq, stream);
-		fputc(c, stream);
-	}
-	fputc(sq, stream);
-}
-
-void tcl_quote_print(FILE *stream, const char *src)
-{
-	char c;
-
-	fputc('"', stream);
-	while ((c = *src++)) {
-		switch (c) {
-		case '[': case ']':
-		case '{': case '}':
-		case '$': case '\\': case '"':
-			fputc('\\', stream);
-		default:
-			fputc(c, stream);
-			break;
-		case '\f':
-			fputs("\\f", stream);
-			break;
-		case '\r':
-			fputs("\\r", stream);
-			break;
-		case '\n':
-			fputs("\\n", stream);
-			break;
-		case '\t':
-			fputs("\\t", stream);
-			break;
-		case '\v':
-			fputs("\\v", stream);
-			break;
-		}
-	}
-	fputc('"', stream);
-}
diff --git a/tools/perf/util/quote.h b/tools/perf/util/quote.h
index b6a0197..172889e 100644
--- a/tools/perf/util/quote.h
+++ b/tools/perf/util/quote.h
@@ -22,47 +22,8 @@
  *
  * Note that the above examples leak memory!  Remember to free result from
  * sq_quote() in a real application.
- *
- * sq_quote_buf() writes to an existing buffer of specified size; it
- * will return the number of characters that would have been written
- * excluding the final null regardless of the buffer size.
  */
 
-extern void sq_quote_print(FILE *stream, const char *src);
-
-extern void sq_quote_buf(struct strbuf *, const char *src);
 extern void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen);
 
-/* This unwraps what sq_quote() produces in place, but returns
- * NULL if the input does not look like what sq_quote would have
- * produced.
- */
-extern char *sq_dequote(char *);
-
-/*
- * Same as the above, but can be used to unwrap many arguments in the
- * same string separated by space. "next" is changed to point to the
- * next argument that should be passed as first parameter. When there
- * is no more argument to be dequoted, "next" is updated to point to NULL.
- */
-extern char *sq_dequote_step(char *arg, char **next);
-extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc);
-
-extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp);
-extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq);
-extern void quote_two_c_style(struct strbuf *, const char *, const char *, int);
-
-extern void write_name_quoted(const char *name, FILE *, int terminator);
-extern void write_name_quotedpfx(const char *pfx, ssize_t pfxlen,
-                                 const char *name, FILE *, int terminator);
-
-/* quote path as relative to the given prefix */
-char *quote_path_relative(const char *in, int len,
-			  struct strbuf *out, const char *prefix);
-
-/* quoting as a string literal for other languages */
-extern void perl_quote_print(FILE *stream, const char *src);
-extern void python_quote_print(FILE *stream, const char *src);
-extern void tcl_quote_print(FILE *stream, const char *src);
-
 #endif /* __PERF_QUOTE_H */
diff --git a/tools/perf/util/run-command.c b/tools/perf/util/run-command.c
index 2b615ac..da8e9b2 100644
--- a/tools/perf/util/run-command.c
+++ b/tools/perf/util/run-command.c
@@ -212,93 +212,3 @@
 	prepare_run_command_v_opt(&cmd, argv, opt);
 	return run_command(&cmd);
 }
-
-int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env)
-{
-	struct child_process cmd;
-	prepare_run_command_v_opt(&cmd, argv, opt);
-	cmd.dir = dir;
-	cmd.env = env;
-	return run_command(&cmd);
-}
-
-int start_async(struct async *async)
-{
-	int pipe_out[2];
-
-	if (pipe(pipe_out) < 0)
-		return error("cannot create pipe: %s", strerror(errno));
-	async->out = pipe_out[0];
-
-	/* Flush stdio before fork() to avoid cloning buffers */
-	fflush(NULL);
-
-	async->pid = fork();
-	if (async->pid < 0) {
-		error("fork (async) failed: %s", strerror(errno));
-		close_pair(pipe_out);
-		return -1;
-	}
-	if (!async->pid) {
-		close(pipe_out[0]);
-		exit(!!async->proc(pipe_out[1], async->data));
-	}
-	close(pipe_out[1]);
-
-	return 0;
-}
-
-int finish_async(struct async *async)
-{
-	int ret = 0;
-
-	if (wait_or_whine(async->pid))
-		ret = error("waitpid (async) failed");
-
-	return ret;
-}
-
-int run_hook(const char *index_file, const char *name, ...)
-{
-	struct child_process hook;
-	const char **argv = NULL, *env[2];
-	char idx[PATH_MAX];
-	va_list args;
-	int ret;
-	size_t i = 0, alloc = 0;
-
-	if (access(perf_path("hooks/%s", name), X_OK) < 0)
-		return 0;
-
-	va_start(args, name);
-	ALLOC_GROW(argv, i + 1, alloc);
-	argv[i++] = perf_path("hooks/%s", name);
-	while (argv[i-1]) {
-		ALLOC_GROW(argv, i + 1, alloc);
-		argv[i++] = va_arg(args, const char *);
-	}
-	va_end(args);
-
-	memset(&hook, 0, sizeof(hook));
-	hook.argv = argv;
-	hook.no_stdin = 1;
-	hook.stdout_to_stderr = 1;
-	if (index_file) {
-		snprintf(idx, sizeof(idx), "PERF_INDEX_FILE=%s", index_file);
-		env[0] = idx;
-		env[1] = NULL;
-		hook.env = env;
-	}
-
-	ret = start_command(&hook);
-	free(argv);
-	if (ret) {
-		warning("Could not spawn %s", argv[0]);
-		return ret;
-	}
-	ret = finish_command(&hook);
-	if (ret == -ERR_RUN_COMMAND_WAITPID_SIGNAL)
-		warning("%s exited due to uncaught signal", argv[0]);
-
-	return ret;
-}
diff --git a/tools/perf/util/run-command.h b/tools/perf/util/run-command.h
index d790287..1ef264d 100644
--- a/tools/perf/util/run-command.h
+++ b/tools/perf/util/run-command.h
@@ -50,39 +50,9 @@
 int finish_command(struct child_process *);
 int run_command(struct child_process *);
 
-extern int run_hook(const char *index_file, const char *name, ...);
-
 #define RUN_COMMAND_NO_STDIN 1
 #define RUN_PERF_CMD	     2	/*If this is to be perf sub-command */
 #define RUN_COMMAND_STDOUT_TO_STDERR 4
 int run_command_v_opt(const char **argv, int opt);
 
-/*
- * env (the environment) is to be formatted like environ: "VAR=VALUE".
- * To unset an environment variable use just "VAR".
- */
-int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env);
-
-/*
- * The purpose of the following functions is to feed a pipe by running
- * a function asynchronously and providing output that the caller reads.
- *
- * It is expected that no synchronization and mutual exclusion between
- * the caller and the feed function is necessary so that the function
- * can run in a thread without interfering with the caller.
- */
-struct async {
-	/*
-	 * proc writes to fd and closes it;
-	 * returns 0 on success, non-zero on failure
-	 */
-	int (*proc)(int fd, void *data);
-	void *data;
-	int out;	/* caller reads from here and closes it */
-	pid_t pid;
-};
-
-int start_async(struct async *async);
-int finish_async(struct async *async);
-
 #endif /* __PERF_RUN_COMMAND_H */
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 25bfca4..8f83a18 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -5,6 +5,7 @@
 #include <byteswap.h>
 #include <unistd.h>
 #include <sys/types.h>
+#include <sys/mman.h>
 
 #include "session.h"
 #include "sort.h"
@@ -894,3 +895,10 @@
 	       __dsos__fprintf(&self->host_machine.user_dsos, fp) +
 	       machines__fprintf_dsos(&self->machines, fp);
 }
+
+size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
+					  bool with_hits)
+{
+	size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits);
+	return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits);
+}
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index e7fce48..55c6881 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -132,12 +132,8 @@
 
 size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp);
 
-static inline
-size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
-					  bool with_hits)
-{
-	return machines__fprintf_dsos_buildid(&self->machines, fp, with_hits);
-}
+size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
+					  FILE *fp, bool with_hits);
 
 static inline
 size_t perf_session__fprintf_nr_events(struct perf_session *self, FILE *fp)
diff --git a/tools/perf/util/sigchain.c b/tools/perf/util/sigchain.c
index 1118b99..ba785e9 100644
--- a/tools/perf/util/sigchain.c
+++ b/tools/perf/util/sigchain.c
@@ -16,7 +16,7 @@
 		die("BUG: signal out of range: %d", sig);
 }
 
-int sigchain_push(int sig, sigchain_fun f)
+static int sigchain_push(int sig, sigchain_fun f)
 {
 	struct sigchain_signal *s = signals + sig;
 	check_signum(sig);
diff --git a/tools/perf/util/sigchain.h b/tools/perf/util/sigchain.h
index 1a53c11..959d64e 100644
--- a/tools/perf/util/sigchain.h
+++ b/tools/perf/util/sigchain.h
@@ -3,7 +3,6 @@
 
 typedef void (*sigchain_fun)(int);
 
-int sigchain_push(int sig, sigchain_fun f);
 int sigchain_pop(int sig);
 
 void sigchain_push_common(sigchain_fun f);
diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c
index 5249d5a..92e0685 100644
--- a/tools/perf/util/strbuf.c
+++ b/tools/perf/util/strbuf.c
@@ -41,16 +41,6 @@
 	return res;
 }
 
-void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
-{
-	strbuf_release(sb);
-	sb->buf   = buf;
-	sb->len   = len;
-	sb->alloc = alloc;
-	strbuf_grow(sb, 0);
-	sb->buf[sb->len] = '\0';
-}
-
 void strbuf_grow(struct strbuf *sb, size_t extra)
 {
 	if (sb->len + extra + 1 <= sb->len)
@@ -60,94 +50,7 @@
 	ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
 }
 
-void strbuf_trim(struct strbuf *sb)
-{
-	char *b = sb->buf;
-	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
-		sb->len--;
-	while (sb->len > 0 && isspace(*b)) {
-		b++;
-		sb->len--;
-	}
-	memmove(sb->buf, b, sb->len);
-	sb->buf[sb->len] = '\0';
-}
-void strbuf_rtrim(struct strbuf *sb)
-{
-	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
-		sb->len--;
-	sb->buf[sb->len] = '\0';
-}
-
-void strbuf_ltrim(struct strbuf *sb)
-{
-	char *b = sb->buf;
-	while (sb->len > 0 && isspace(*b)) {
-		b++;
-		sb->len--;
-	}
-	memmove(sb->buf, b, sb->len);
-	sb->buf[sb->len] = '\0';
-}
-
-void strbuf_tolower(struct strbuf *sb)
-{
-	unsigned int i;
-
-	for (i = 0; i < sb->len; i++)
-		sb->buf[i] = tolower(sb->buf[i]);
-}
-
-struct strbuf **strbuf_split(const struct strbuf *sb, int delim)
-{
-	int alloc = 2, pos = 0;
-	char *n, *p;
-	struct strbuf **ret;
-	struct strbuf *t;
-
-	ret = calloc(alloc, sizeof(struct strbuf *));
-	p = n = sb->buf;
-	while (n < sb->buf + sb->len) {
-		int len;
-		n = memchr(n, delim, sb->len - (n - sb->buf));
-		if (pos + 1 >= alloc) {
-			alloc = alloc * 2;
-			ret = realloc(ret, sizeof(struct strbuf *) * alloc);
-		}
-		if (!n)
-			n = sb->buf + sb->len - 1;
-		len = n - p + 1;
-		t = malloc(sizeof(struct strbuf));
-		strbuf_init(t, len);
-		strbuf_add(t, p, len);
-		ret[pos] = t;
-		ret[++pos] = NULL;
-		p = ++n;
-	}
-	return ret;
-}
-
-void strbuf_list_free(struct strbuf **sbs)
-{
-	struct strbuf **s = sbs;
-
-	while (*s) {
-		strbuf_release(*s);
-		free(*s++);
-	}
-	free(sbs);
-}
-
-int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
-{
-	int len = a->len < b->len ? a->len: b->len;
-	int cmp = memcmp(a->buf, b->buf, len);
-	if (cmp)
-		return cmp;
-	return a->len < b->len ? -1: a->len != b->len;
-}
-
-void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
+static void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
 				   const void *data, size_t dlen)
 {
 	if (pos + len < pos)
@@ -166,11 +69,6 @@
 	strbuf_setlen(sb, sb->len + dlen - len);
 }
 
-void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
-{
-	strbuf_splice(sb, pos, 0, data, len);
-}
-
 void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
 {
 	strbuf_splice(sb, pos, len, NULL, 0);
@@ -183,13 +81,6 @@
 	strbuf_setlen(sb, sb->len + len);
 }
 
-void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
-{
-	strbuf_grow(sb, len);
-	memcpy(sb->buf + sb->len, sb->buf + pos, len);
-	strbuf_setlen(sb, sb->len + len);
-}
-
 void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
 {
 	int len;
@@ -214,57 +105,6 @@
 	strbuf_setlen(sb, sb->len + len);
 }
 
-void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
-		   void *context)
-{
-	for (;;) {
-		const char *percent;
-		size_t consumed;
-
-		percent = strchrnul(format, '%');
-		strbuf_add(sb, format, percent - format);
-		if (!*percent)
-			break;
-		format = percent + 1;
-
-		consumed = fn(sb, format, context);
-		if (consumed)
-			format += consumed;
-		else
-			strbuf_addch(sb, '%');
-	}
-}
-
-size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
-		void *context)
-{
-	struct strbuf_expand_dict_entry *e = context;
-	size_t len;
-
-	for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
-		if (!strncmp(placeholder, e->placeholder, len)) {
-			if (e->value)
-				strbuf_addstr(sb, e->value);
-			return len;
-		}
-	}
-	return 0;
-}
-
-size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
-{
-	size_t res;
-	size_t oldalloc = sb->alloc;
-
-	strbuf_grow(sb, size);
-	res = fread(sb->buf + sb->len, 1, size, f);
-	if (res > 0)
-		strbuf_setlen(sb, sb->len + res);
-	else if (oldalloc == 0)
-		strbuf_release(sb);
-	return res;
-}
-
 ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint)
 {
 	size_t oldlen = sb->len;
@@ -291,70 +131,3 @@
 	sb->buf[sb->len] = '\0';
 	return sb->len - oldlen;
 }
-
-#define STRBUF_MAXLINK (2*PATH_MAX)
-
-int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint)
-{
-	size_t oldalloc = sb->alloc;
-
-	if (hint < 32)
-		hint = 32;
-
-	while (hint < STRBUF_MAXLINK) {
-		ssize_t len;
-
-		strbuf_grow(sb, hint);
-		len = readlink(path, sb->buf, hint);
-		if (len < 0) {
-			if (errno != ERANGE)
-				break;
-		} else if (len < hint) {
-			strbuf_setlen(sb, len);
-			return 0;
-		}
-
-		/* .. the buffer was too small - try again */
-		hint *= 2;
-	}
-	if (oldalloc == 0)
-		strbuf_release(sb);
-	return -1;
-}
-
-int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
-{
-	int ch;
-
-	strbuf_grow(sb, 0);
-	if (feof(fp))
-		return EOF;
-
-	strbuf_reset(sb);
-	while ((ch = fgetc(fp)) != EOF) {
-		if (ch == term)
-			break;
-		strbuf_grow(sb, 1);
-		sb->buf[sb->len++] = ch;
-	}
-	if (ch == EOF && sb->len == 0)
-		return EOF;
-
-	sb->buf[sb->len] = '\0';
-	return 0;
-}
-
-int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint)
-{
-	int fd, len;
-
-	fd = open(path, O_RDONLY);
-	if (fd < 0)
-		return -1;
-	len = strbuf_read(sb, fd, hint);
-	close(fd);
-	if (len < 0)
-		return -1;
-
-	return len;
-}
diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h
index a3d121d..436ac31 100644
--- a/tools/perf/util/strbuf.h
+++ b/tools/perf/util/strbuf.h
@@ -53,12 +53,6 @@
 extern void strbuf_init(struct strbuf *buf, ssize_t hint);
 extern void strbuf_release(struct strbuf *);
 extern char *strbuf_detach(struct strbuf *, size_t *);
-extern void strbuf_attach(struct strbuf *, void *, size_t, size_t);
-static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) {
-	struct strbuf tmp = *a;
-	*a = *b;
-	*b = tmp;
-}
 
 /*----- strbuf size related -----*/
 static inline ssize_t strbuf_avail(const struct strbuf *sb) {
@@ -74,17 +68,6 @@
 	sb->len = len;
 	sb->buf[len] = '\0';
 }
-#define strbuf_reset(sb)  strbuf_setlen(sb, 0)
-
-/*----- content related -----*/
-extern void strbuf_trim(struct strbuf *);
-extern void strbuf_rtrim(struct strbuf *);
-extern void strbuf_ltrim(struct strbuf *);
-extern int strbuf_cmp(const struct strbuf *, const struct strbuf *);
-extern void strbuf_tolower(struct strbuf *);
-
-extern struct strbuf **strbuf_split(const struct strbuf *, int delim);
-extern void strbuf_list_free(struct strbuf **);
 
 /*----- add data in your buffer -----*/
 static inline void strbuf_addch(struct strbuf *sb, int c) {
@@ -93,45 +76,17 @@
 	sb->buf[sb->len] = '\0';
 }
 
-extern void strbuf_insert(struct strbuf *, size_t pos, const void *, size_t);
 extern void strbuf_remove(struct strbuf *, size_t pos, size_t len);
 
-/* splice pos..pos+len with given data */
-extern void strbuf_splice(struct strbuf *, size_t pos, size_t len,
-                          const void *, size_t);
-
 extern void strbuf_add(struct strbuf *, const void *, size_t);
 static inline void strbuf_addstr(struct strbuf *sb, const char *s) {
 	strbuf_add(sb, s, strlen(s));
 }
-static inline void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) {
-	strbuf_add(sb, sb2->buf, sb2->len);
-}
-extern void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len);
-
-typedef size_t (*expand_fn_t) (struct strbuf *sb, const char *placeholder, void *context);
-extern void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, void *context);
-struct strbuf_expand_dict_entry {
-	const char *placeholder;
-	const char *value;
-};
-extern size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, void *context);
 
 __attribute__((format(printf,2,3)))
 extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...);
 
-extern size_t strbuf_fread(struct strbuf *, size_t, FILE *);
 /* XXX: if read fails, any partial read is undone */
 extern ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint);
-extern int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint);
-extern int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint);
-
-extern int strbuf_getline(struct strbuf *, FILE *, int);
-
-extern void stripspace(struct strbuf *buf, int skip_comments);
-extern int launch_editor(const char *path, struct strbuf *buffer, const char *const *env);
-
-extern int strbuf_branchname(struct strbuf *sb, const char *name);
-extern int strbuf_check_branch_ref(struct strbuf *sb, const char *name);
 
 #endif /* __PERF_STRBUF_H */
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a06131f..aaa51ba 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -11,6 +11,7 @@
 #include <sys/param.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include "build-id.h"
 #include "symbol.h"
 #include "strlist.h"
 
@@ -1131,6 +1132,10 @@
 	list_for_each_entry(pos, head, node) {
 		if (with_hits && !pos->hit)
 			continue;
+		if (pos->has_build_id) {
+			have_build_id = true;
+			continue;
+		}
 		if (filename__read_build_id(pos->long_name, pos->build_id,
 					    sizeof(pos->build_id)) > 0) {
 			have_build_id	  = true;
@@ -1289,7 +1294,6 @@
 	int size = PATH_MAX;
 	char *name;
 	u8 build_id[BUILD_ID_SIZE];
-	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
 	int ret = -1;
 	int fd;
 	struct machine *machine;
@@ -1321,15 +1325,8 @@
 	}
 
 	self->origin = DSO__ORIG_BUILD_ID_CACHE;
-
-	if (self->has_build_id) {
-		build_id__sprintf(self->build_id, sizeof(self->build_id),
-				  build_id_hex);
-		snprintf(name, size, "%s/%s/.build-id/%.2s/%s",
-			 getenv("HOME"), DEBUG_CACHE_DIR,
-			 build_id_hex, build_id_hex + 2);
+	if (dso__build_id_filename(self, name, size) != NULL)
 		goto open_file;
-	}
 more:
 	do {
 		self->origin++;
@@ -1345,6 +1342,7 @@
 		case DSO__ORIG_BUILDID:
 			if (filename__read_build_id(self->long_name, build_id,
 						    sizeof(build_id))) {
+				char build_id_hex[BUILD_ID_SIZE * 2 + 1];
 				build_id__sprintf(build_id, sizeof(build_id),
 						  build_id_hex);
 				snprintf(name, size,
@@ -1933,6 +1931,12 @@
 	return ret;
 }
 
+size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits)
+{
+	return __dsos__fprintf_buildid(&self->kernel_dsos, fp, with_hits) +
+	       __dsos__fprintf_buildid(&self->user_dsos, fp, with_hits);
+}
+
 size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits)
 {
 	struct rb_node *nd;
@@ -1940,8 +1944,7 @@
 
 	for (nd = rb_first(self); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
-		ret += __dsos__fprintf_buildid(&pos->kernel_dsos, fp, with_hits);
-		ret += __dsos__fprintf_buildid(&pos->user_dsos, fp, with_hits);
+		ret += machine__fprintf_dsos_buildid(pos, fp, with_hits);
 	}
 	return ret;
 }
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 032469e..5d25b5e 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -170,6 +170,7 @@
 
 size_t __dsos__fprintf(struct list_head *head, FILE *fp);
 
+size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits);
 size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp);
 size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits);
 
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index cb54cd0..f55cc3a 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -53,12 +53,6 @@
 static ssize_t calc_data_size;
 static bool repipe;
 
-/* If it fails, the next read will report it */
-static void skip(int size)
-{
-	lseek(input_fd, size, SEEK_CUR);
-}
-
 static int do_read(int fd, void *buf, int size)
 {
 	int rsize = size;
@@ -98,6 +92,19 @@
 	return r;
 }
 
+/* If it fails, the next read will report it */
+static void skip(int size)
+{
+	char buf[BUFSIZ];
+	int r;
+
+	while (size) {
+		r = size > BUFSIZ ? BUFSIZ : size;
+		read_or_die(buf, r);
+		size -= r;
+	};
+}
+
 static unsigned int read4(void)
 {
 	unsigned int data;
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 406d452..b3e86b1 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -233,7 +233,12 @@
 
 #define data2host2(ptr)		__data2host2(*(unsigned short *)ptr)
 #define data2host4(ptr)		__data2host4(*(unsigned int *)ptr)
-#define data2host8(ptr)		__data2host8(*(unsigned long long *)ptr)
+#define data2host8(ptr)		({				\
+	unsigned long long __val;				\
+								\
+	memcpy(&__val, (ptr), sizeof(unsigned long long));	\
+	__data2host8(__val);					\
+})
 
 extern int header_page_ts_offset;
 extern int header_page_ts_size;
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 0795bf30..4e8b6b0 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -81,7 +81,7 @@
 #include <inttypes.h>
 #include "../../../include/linux/magic.h"
 #include "types.h"
-
+#include <sys/ttydefaults.h>
 
 #ifndef NO_ICONV
 #include <iconv.h>
@@ -152,7 +152,6 @@
 extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
 
 extern int prefixcmp(const char *str, const char *prefix);
-extern time_t tm_to_time_t(const struct tm *tm);
 
 static inline const char *skip_prefix(const char *str, const char *prefix)
 {
@@ -160,119 +159,6 @@
 	return strncmp(str, prefix, len) ? NULL : str + len;
 }
 
-#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
-
-#ifndef PROT_READ
-#define PROT_READ 1
-#define PROT_WRITE 2
-#define MAP_PRIVATE 1
-#define MAP_FAILED ((void*)-1)
-#endif
-
-#define mmap git_mmap
-#define munmap git_munmap
-extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
-extern int git_munmap(void *start, size_t length);
-
-#else /* NO_MMAP || USE_WIN32_MMAP */
-
-#include <sys/mman.h>
-
-#endif /* NO_MMAP || USE_WIN32_MMAP */
-
-#ifdef NO_MMAP
-
-/* This value must be multiple of (pagesize * 2) */
-#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
-
-#else /* NO_MMAP */
-
-/* This value must be multiple of (pagesize * 2) */
-#define DEFAULT_PACKED_GIT_WINDOW_SIZE \
-	(sizeof(void*) >= 8 \
-		?  1 * 1024 * 1024 * 1024 \
-		: 32 * 1024 * 1024)
-
-#endif /* NO_MMAP */
-
-#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
-#define on_disk_bytes(st) ((st).st_size)
-#else
-#define on_disk_bytes(st) ((st).st_blocks * 512)
-#endif
-
-#define DEFAULT_PACKED_GIT_LIMIT \
-	((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
-
-#ifdef NO_PREAD
-#define pread git_pread
-extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
-#endif
-/*
- * Forward decl that will remind us if its twin in cache.h changes.
- * This function is used in compat/pread.c.  But we can't include
- * cache.h there.
- */
-extern ssize_t read_in_full(int fd, void *buf, size_t count);
-
-#ifdef NO_SETENV
-#define setenv gitsetenv
-extern int gitsetenv(const char *, const char *, int);
-#endif
-
-#ifdef NO_MKDTEMP
-#define mkdtemp gitmkdtemp
-extern char *gitmkdtemp(char *);
-#endif
-
-#ifdef NO_UNSETENV
-#define unsetenv gitunsetenv
-extern void gitunsetenv(const char *);
-#endif
-
-#ifdef NO_STRCASESTR
-#define strcasestr gitstrcasestr
-extern char *gitstrcasestr(const char *haystack, const char *needle);
-#endif
-
-#ifdef NO_STRLCPY
-#define strlcpy gitstrlcpy
-extern size_t gitstrlcpy(char *, const char *, size_t);
-#endif
-
-#ifdef NO_STRTOUMAX
-#define strtoumax gitstrtoumax
-extern uintmax_t gitstrtoumax(const char *, char **, int);
-#endif
-
-#ifdef NO_HSTRERROR
-#define hstrerror githstrerror
-extern const char *githstrerror(int herror);
-#endif
-
-#ifdef NO_MEMMEM
-#define memmem gitmemmem
-void *gitmemmem(const void *haystack, size_t haystacklen,
-                const void *needle, size_t needlelen);
-#endif
-
-#ifdef FREAD_READS_DIRECTORIES
-#ifdef fopen
-#undef fopen
-#endif
-#define fopen(a,b) git_fopen(a,b)
-extern FILE *git_fopen(const char*, const char*);
-#endif
-
-#ifdef SNPRINTF_RETURNS_BOGUS
-#define snprintf git_snprintf
-extern int git_snprintf(char *str, size_t maxsize,
-			const char *format, ...);
-#define vsnprintf git_vsnprintf
-extern int git_vsnprintf(char *str, size_t maxsize,
-			 const char *format, va_list ap);
-#endif
-
 #ifdef __GLIBC_PREREQ
 #if __GLIBC_PREREQ(2, 1)
 #define HAVE_STRCHRNUL
@@ -293,28 +179,14 @@
  * Wrappers:
  */
 extern char *xstrdup(const char *str);
-extern void *xmalloc(size_t size) __attribute__((weak));
-extern void *xmemdupz(const void *data, size_t len);
-extern char *xstrndup(const char *str, size_t len);
 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 
-static inline void *xzalloc(size_t size)
-{
-	void *buf = xmalloc(size);
-
-	return memset(buf, 0, size);
-}
 
 static inline void *zalloc(size_t size)
 {
 	return calloc(1, size);
 }
 
-static inline size_t xsize_t(off_t len)
-{
-	return (size_t)len;
-}
-
 static inline int has_extension(const char *filename, const char *ext)
 {
 	size_t len = strlen(filename);
@@ -351,8 +223,6 @@
 #define isalpha(x) sane_istest(x,GIT_ALPHA)
 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
 #define isprint(x) sane_istest(x,GIT_PRINT)
-#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
-#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
 #define tolower(x) sane_case((unsigned char)(x), 0x20)
 #define toupper(x) sane_case((unsigned char)(x), 0)
 
@@ -363,38 +233,6 @@
 	return x;
 }
 
-static inline int strtoul_ui(char const *s, int base, unsigned int *result)
-{
-	unsigned long ul;
-	char *p;
-
-	errno = 0;
-	ul = strtoul(s, &p, base);
-	if (errno || *p || p == s || (unsigned int) ul != ul)
-		return -1;
-	*result = ul;
-	return 0;
-}
-
-static inline int strtol_i(char const *s, int base, int *result)
-{
-	long ul;
-	char *p;
-
-	errno = 0;
-	ul = strtol(s, &p, base);
-	if (errno || *p || p == s || (int) ul != ul)
-		return -1;
-	*result = ul;
-	return 0;
-}
-
-#ifdef INTERNAL_QSORT
-void git_qsort(void *base, size_t nmemb, size_t size,
-	       int(*compar)(const void *, const void *));
-#define qsort git_qsort
-#endif
-
 #ifndef DIR_HAS_BSD_GROUP_SEMANTICS
 # define FORCE_DIR_SET_GID S_ISGID
 #else
@@ -425,6 +263,19 @@
 bool strlazymatch(const char *str, const char *pat);
 unsigned long convert_unit(unsigned long value, char *unit);
 
+#ifndef ESC
+#define ESC 27
+#endif
+
+static inline bool is_exit_key(int key)
+{
+	char up;
+	if (key == CTRL('c') || key == ESC)
+		return true;
+	up = toupper(key);
+	return up == 'Q';
+}
+
 #define _STR(x) #x
 #define STR(x) _STR(x)
 
diff --git a/tools/perf/util/wrapper.c b/tools/perf/util/wrapper.c
index bf44ca8..73e900e 100644
--- a/tools/perf/util/wrapper.c
+++ b/tools/perf/util/wrapper.c
@@ -23,46 +23,6 @@
 	return ret;
 }
 
-void *xmalloc(size_t size)
-{
-	void *ret = malloc(size);
-	if (!ret && !size)
-		ret = malloc(1);
-	if (!ret) {
-		release_pack_memory(size, -1);
-		ret = malloc(size);
-		if (!ret && !size)
-			ret = malloc(1);
-		if (!ret)
-			die("Out of memory, malloc failed");
-	}
-#ifdef XMALLOC_POISON
-	memset(ret, 0xA5, size);
-#endif
-	return ret;
-}
-
-/*
- * xmemdupz() allocates (len + 1) bytes of memory, duplicates "len" bytes of
- * "data" to the allocated memory, zero terminates the allocated memory,
- * and returns a pointer to the allocated memory. If the allocation fails,
- * the program dies.
- */
-void *xmemdupz(const void *data, size_t len)
-{
-	char *p = xmalloc(len + 1);
-	memcpy(p, data, len);
-	p[len] = '\0';
-	return p;
-}
-
-char *xstrndup(const char *str, size_t len)
-{
-	char *p = memchr(str, '\0', len);
-
-	return xmemdupz(str, p ? (size_t)(p - str) : len);
-}
-
 void *xrealloc(void *ptr, size_t size)
 {
 	void *ret = realloc(ptr, size);
@@ -78,73 +38,3 @@
 	}
 	return ret;
 }
-
-/*
- * xread() is the same a read(), but it automatically restarts read()
- * operations with a recoverable error (EAGAIN and EINTR). xread()
- * DOES NOT GUARANTEE that "len" bytes is read even if the data is available.
- */
-static ssize_t xread(int fd, void *buf, size_t len)
-{
-	ssize_t nr;
-	while (1) {
-		nr = read(fd, buf, len);
-		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
-			continue;
-		return nr;
-	}
-}
-
-/*
- * xwrite() is the same a write(), but it automatically restarts write()
- * operations with a recoverable error (EAGAIN and EINTR). xwrite() DOES NOT
- * GUARANTEE that "len" bytes is written even if the operation is successful.
- */
-static ssize_t xwrite(int fd, const void *buf, size_t len)
-{
-	ssize_t nr;
-	while (1) {
-		nr = write(fd, buf, len);
-		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
-			continue;
-		return nr;
-	}
-}
-
-ssize_t read_in_full(int fd, void *buf, size_t count)
-{
-	char *p = buf;
-	ssize_t total = 0;
-
-	while (count > 0) {
-		ssize_t loaded = xread(fd, p, count);
-		if (loaded <= 0)
-			return total ? total : loaded;
-		count -= loaded;
-		p += loaded;
-		total += loaded;
-	}
-
-	return total;
-}
-
-ssize_t write_in_full(int fd, const void *buf, size_t count)
-{
-	const char *p = buf;
-	ssize_t total = 0;
-
-	while (count > 0) {
-		ssize_t written = xwrite(fd, p, count);
-		if (written < 0)
-			return -1;
-		if (!written) {
-			errno = ENOSPC;
-			return -1;
-		}
-		count -= written;
-		p += written;
-		total += written;
-	}
-
-	return total;
-}
diff --git a/usr/Makefile b/usr/Makefile
index 1e6a9e4..6b4b6da 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -15,6 +15,9 @@
 # Lzma
 suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZMA)   = .lzma
 
+# Lzo
+suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZO)   = .lzo
+
 # Generate builtin.o based on initramfs_data.o
 obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data$(suffix_y).o
 
@@ -45,7 +48,7 @@
 quiet_cmd_initfs = GEN     $@
       cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
 
-targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio
+targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio.lzo initramfs_data.cpio
 # do not try to update files included in initramfs
 $(deps_initramfs): ;
 
diff --git a/usr/initramfs_data.lzo.S b/usr/initramfs_data.lzo.S
new file mode 100644
index 0000000..5921190
--- /dev/null
+++ b/usr/initramfs_data.lzo.S
@@ -0,0 +1,29 @@
+/*
+  initramfs_data includes the compressed binary that is the
+  filesystem used for early user space.
+  Note: Older versions of "as" (prior to binutils 2.11.90.0.23
+  released on 2001-07-14) dit not support .incbin.
+  If you are forced to use older binutils than that then the
+  following trick can be applied to create the resulting binary:
+
+
+  ld -m elf_i386  --format binary --oformat elf32-i386 -r \
+  -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o
+   ld -m elf_i386  -r -o built-in.o initramfs_data.o
+
+  initramfs_data.scr looks like this:
+SECTIONS
+{
+       .init.ramfs : { *(.data) }
+}
+
+  The above example is for i386 - the parameters vary from architectures.
+  Eventually look up LDFLAGS_BLOB in an older version of the
+  arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced.
+
+  Using .incbin has the advantage over ld that the correct flags are set
+  in the ELF header, as required by certain architectures.
+*/
+
+.section .init.ramfs,"a"
+.incbin "usr/initramfs_data.cpio.lzo"