diff --git a/Documentation/ABI/testing/sysfs-dev b/Documentation/ABI/testing/sysfs-dev
new file mode 100644
index 0000000..a9f2b8b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-dev
@@ -0,0 +1,20 @@
+What:		/sys/dev
+Date:		April 2008
+KernelVersion:	2.6.26
+Contact:	Dan Williams <dan.j.williams@intel.com>
+Description:	The /sys/dev tree provides a method to look up the sysfs
+		path for a device using the information returned from
+		stat(2).  There are two directories, 'block' and 'char',
+		beneath /sys/dev containing symbolic links with names of
+		the form "<major>:<minor>".  These links point to the
+		corresponding sysfs path for the given device.
+
+		Example:
+		$ readlink /sys/dev/block/8:32
+		../../block/sdc
+
+		Entries in /sys/dev/char and /sys/dev/block will be
+		dynamically created and destroyed as devices enter and
+		leave the system.
+
+Users:		mdadm <linux-raid@vger.kernel.org>
diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index fdd7f4f..df87d1b 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -21,6 +21,18 @@
     </affiliation>
 </author>
 
+<copyright>
+	<year>2006-2008</year>
+	<holder>Hans-Jürgen Koch.</holder>
+</copyright>
+
+<legalnotice>
+<para>
+This documentation is Free Software licensed under the terms of the
+GPL version 2.
+</para>
+</legalnotice>
+
 <pubdate>2006-12-11</pubdate>
 
 <abstract>
@@ -30,6 +42,12 @@
 
 <revhistory>
 	<revision>
+	<revnumber>0.5</revnumber>
+	<date>2008-05-22</date>
+	<authorinitials>hjk</authorinitials>
+	<revremark>Added description of write() function.</revremark>
+	</revision>
+	<revision>
 	<revnumber>0.4</revnumber>
 	<date>2007-11-26</date>
 	<authorinitials>hjk</authorinitials>
@@ -57,20 +75,9 @@
 </bookinfo>
 
 <chapter id="aboutthisdoc">
-<?dbhtml filename="about.html"?>
+<?dbhtml filename="aboutthis.html"?>
 <title>About this document</title>
 
-<sect1 id="copyright">
-<?dbhtml filename="copyright.html"?>
-<title>Copyright and License</title>
-<para>
-      Copyright (c) 2006 by Hans-Jürgen Koch.</para>
-<para>
-This documentation is Free Software licensed under the terms of the
-GPL version 2.
-</para>
-</sect1>
-
 <sect1 id="translations">
 <?dbhtml filename="translations.html"?>
 <title>Translations</title>
@@ -189,6 +196,30 @@
 	represents the total interrupt count. You can use this number
 	to figure out if you missed some interrupts.
 	</para>
+	<para>
+	For some hardware that has more than one interrupt source internally,
+	but not separate IRQ mask and status registers, there might be
+	situations where userspace cannot determine what the interrupt source
+	was if the kernel handler disables them by writing to the chip's IRQ
+	register. In such a case, the kernel has to disable the IRQ completely
+	to leave the chip's register untouched. Now the userspace part can
+	determine the cause of the interrupt, but it cannot re-enable
+	interrupts. Another cornercase is chips where re-enabling interrupts
+	is a read-modify-write operation to a combined IRQ status/acknowledge
+	register. This would be racy if a new interrupt occurred
+	simultaneously.
+	</para>
+	<para>
+	To address these problems, UIO also implements a write() function. It
+	is normally not used and can be ignored for hardware that has only a
+	single interrupt source or has separate IRQ mask and status registers.
+	If you need it, however, a write to <filename>/dev/uioX</filename>
+	will call the <function>irqcontrol()</function> function implemented
+	by the driver. You have to write a 32-bit value that is usually either
+	0 or 1 to disable or enable interrupts. If a driver does not implement
+	<function>irqcontrol()</function>, <function>write()</function> will
+	return with <varname>-ENOSYS</varname>.
+	</para>
 
 	<para>
 	To handle interrupts properly, your custom kernel module can
@@ -362,6 +393,14 @@
 <function>open()</function>, you will probably also want a custom
 <function>release()</function> function.
 </para></listitem>
+
+<listitem><para>
+<varname>int (*irqcontrol)(struct uio_info *info, s32 irq_on)
+</varname>: Optional. If you need to be able to enable or disable
+interrupts from userspace by writing to <filename>/dev/uioX</filename>,
+you can implement this function. The parameter <varname>irq_on</varname>
+will be 0 to disable interrupts and 1 to enable them.
+</para></listitem>
 </itemizedlist>
 
 <para>
diff --git a/Documentation/HOWTO b/Documentation/HOWTO
index 619e8ca..c2371c5 100644
--- a/Documentation/HOWTO
+++ b/Documentation/HOWTO
@@ -358,7 +358,7 @@
     - pcmcia, Dominik Brodowski <linux@dominikbrodowski.net>
 	git.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6.git
 
-    - SCSI, James Bottomley <James.Bottomley@SteelEye.com>
+    - SCSI, James Bottomley <James.Bottomley@hansenpartnership.com>
 	git.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git
 
     - x86, Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt
index 7f27b8f..9e9c348 100644
--- a/Documentation/filesystems/sysfs.txt
+++ b/Documentation/filesystems/sysfs.txt
@@ -248,6 +248,7 @@
 block/
 bus/
 class/
+dev/
 devices/
 firmware/
 net/
@@ -274,6 +275,11 @@
 filesystem wanting to export attributes must create its own hierarchy
 below fs/ (see ./fuse.txt for an example).
 
+dev/ contains two directories char/ and block/. Inside these two
+directories there are symlinks named <major>:<minor>.  These symlinks
+point to the sysfs directory for the given device.  /sys/dev provides a
+quick way to lookup the sysfs interface for a device from the result of
+a stat(2) operation.
 
 More information can driver-model specific features can be found in
 Documentation/driver-model/. 
diff --git a/Documentation/sysfs-rules.txt b/Documentation/sysfs-rules.txt
index 80ef562..6049a2a 100644
--- a/Documentation/sysfs-rules.txt
+++ b/Documentation/sysfs-rules.txt
@@ -3,9 +3,8 @@
 The kernel-exported sysfs exports internal kernel implementation details
 and depends on internal kernel structures and layout. It is agreed upon
 by the kernel developers that the Linux kernel does not provide a stable
-internal API. As sysfs is a direct export of kernel internal
-structures, the sysfs interface cannot provide a stable interface either;
-it may always change along with internal kernel changes.
+internal API. Therefore, there are aspects of the sysfs interface that
+may not be stable across kernel releases.
 
 To minimize the risk of breaking users of sysfs, which are in most cases
 low-level userspace applications, with a new kernel release, the users
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 2744673..dd29473 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -554,9 +554,8 @@
 
 	device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
 	if (!device_info) {
-		printk(KERN_ERR
-			"Could not allocated dmabounce_device_info for %s",
-			dev->bus_id);
+		dev_err(dev,
+			"Could not allocated dmabounce_device_info\n");
 		return -ENOMEM;
 	}
 
@@ -594,8 +593,7 @@
 
 	dev->archdata.dmabounce = device_info;
 
-	printk(KERN_INFO "dmabounce: registered device %s on %s bus\n",
-		dev->bus_id, dev->bus->name);
+	dev_info(dev, "dmabounce: registered device\n");
 
 	return 0;
 
@@ -614,16 +612,15 @@
 	dev->archdata.dmabounce = NULL;
 
 	if (!device_info) {
-		printk(KERN_WARNING
-			"%s: Never registered with dmabounce but attempting" \
-			"to unregister!\n", dev->bus_id);
+		dev_warn(dev,
+			 "Never registered with dmabounce but attempting"
+			 "to unregister!\n");
 		return;
 	}
 
 	if (!list_empty(&device_info->safe_buffers)) {
-		printk(KERN_ERR
-			"%s: Removing from dmabounce with pending buffers!\n",
-			dev->bus_id);
+		dev_err(dev,
+			"Removing from dmabounce with pending buffers!\n");
 		BUG();
 	}
 
@@ -639,8 +636,7 @@
 
 	kfree(device_info);
 
-	printk(KERN_INFO "dmabounce: device %s on %s bus unregistered\n",
-		dev->bus_id, dev->bus->name);
+	dev_info(dev, "dmabounce: device unregistered\n");
 }
 
 
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index d973c98..c3c3a33 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -543,7 +543,6 @@
 		goto out;
 	}
 
-	strncpy(dev->dev.bus_id, info->name, sizeof(dev->dev.bus_id));
 	/*
 	 * If the parent device has a DMA mask associated with it,
 	 * propagate it down to the children.
@@ -553,6 +552,7 @@
 		dev->dev.dma_mask = &dev->dma_mask;
 	}
 
+	dev_set_name(&dev->dev, "%s", info->name);
 	dev->devid	 = info->devid;
 	dev->dev.parent  = lchip->dev;
 	dev->dev.bus     = &locomo_bus_type;
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index eb06d0b..c8e8f0e 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -550,9 +550,7 @@
 		goto out;
 	}
 
-	snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id),
-		 "%4.4lx", info->offset);
-
+	dev_set_name(&dev->dev, "%4.4lx", info->offset);
 	dev->devid	 = info->devid;
 	dev->dev.parent  = sachip->dev;
 	dev->dev.bus     = &sa1111_bus_type;
@@ -560,7 +558,7 @@
 	dev->dev.coherent_dma_mask = sachip->dev->coherent_dma_mask;
 	dev->res.start   = sachip->phys + info->offset;
 	dev->res.end     = dev->res.start + 511;
-	dev->res.name    = dev->dev.bus_id;
+	dev->res.name    = dev_name(&dev->dev);
 	dev->res.flags   = IORESOURCE_MEM;
 	dev->mapbase     = sachip->base + info->offset;
 	dev->skpcr_mask  = info->skpcr_mask;
@@ -570,6 +568,7 @@
 	if (ret) {
 		printk("SA1111: failed to allocate resource for %s\n",
 			dev->res.name);
+		dev_set_name(&dev->dev, NULL);
 		kfree(dev);
 		goto out;
 	}
@@ -593,7 +592,8 @@
 		if (dev->dma_mask != 0xffffffffUL) {
 			ret = dmabounce_register_dev(&dev->dev, 1024, 4096);
 			if (ret) {
-				printk("SA1111: Failed to register %s with dmabounce", dev->dev.bus_id);
+				dev_err(&dev->dev, "SA1111: Failed to register"
+					" with dmabounce\n");
 				device_unregister(&dev->dev);
 			}
 		}
diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c
index bc299b0..ae39553 100644
--- a/arch/arm/common/scoop.c
+++ b/arch/arm/common/scoop.c
@@ -247,7 +247,7 @@
 	devptr->gpio.base = -1;
 
 	if (inf->gpio_base != 0) {
-		devptr->gpio.label = pdev->dev.bus_id;
+		devptr->gpio.label = dev_name(&pdev->dev);
 		devptr->gpio.base = inf->gpio_base;
 		devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */
 		devptr->gpio.set = scoop_gpio_set;
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 8bfd299..f5cfdab 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -783,7 +783,7 @@
 
 #define ec_set_resource(ec,nr,st,sz)				\
 	do {							\
-		(ec)->resource[nr].name = ec->dev.bus_id;	\
+		(ec)->resource[nr].name = dev_name(&ec->dev);	\
 		(ec)->resource[nr].start = st;			\
 		(ec)->resource[nr].end = (st) + (sz) - 1;	\
 		(ec)->resource[nr].flags = IORESOURCE_MEM;	\
@@ -853,8 +853,7 @@
 	for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
 		if (ec->resource[i].flags &&
 		    request_resource(&iomem_resource, &ec->resource[i])) {
-			printk(KERN_ERR "%s: resource(s) not available\n",
-				ec->dev.bus_id);
+			dev_err(&ec->dev, "resource(s) not available\n");
 			ec->resource[i].end -= ec->resource[i].start;
 			ec->resource[i].start = 0;
 			ec->resource[i].flags = 0;
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index cc5145b..368d171 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -130,7 +130,9 @@
 	{ "red",   led_red_on,   led_red_off   },
 };
 
-static ssize_t leds_store(struct sys_device *dev, const char *buf, size_t size)
+static ssize_t leds_store(struct sys_device *dev,
+			struct sysdev_attribute *attr,
+			const char *buf, size_t size)
 {
 	int ret = -EINVAL, len = strcspn(buf, " ");
 
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index 62e653a..5a1588c 100644
--- a/arch/arm/mach-integrator/impd1.c
+++ b/arch/arm/mach-integrator/impd1.c
@@ -393,9 +393,7 @@
 		if (!d)
 			continue;
 
-		snprintf(d->dev.bus_id, sizeof(d->dev.bus_id),
-			 "lm%x:%5.5lx", dev->id, idev->offset >> 12);
-
+		dev_set_name(&d->dev, "lm%x:%5.5lx", dev->id, idev->offset >> 12);
 		d->dev.parent	= &dev->dev;
 		d->res.start	= dev->resource.start + idev->offset;
 		d->res.end	= d->res.start + SZ_4K - 1;
@@ -407,8 +405,7 @@
 
 		ret = amba_device_register(d, &dev->resource);
 		if (ret) {
-			printk("unable to register device %s: %d\n",
-				d->dev.bus_id, ret);
+			dev_err(&d->dev, "unable to register device: %d\n");
 			kfree(d);
 		}
 	}
diff --git a/arch/arm/mach-integrator/lm.c b/arch/arm/mach-integrator/lm.c
index 622cdc4..f939c50 100644
--- a/arch/arm/mach-integrator/lm.c
+++ b/arch/arm/mach-integrator/lm.c
@@ -81,8 +81,10 @@
 	dev->dev.release = lm_device_release;
 	dev->dev.bus = &lm_bustype;
 
-	snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id), "lm%d", dev->id);
-	dev->resource.name = dev->dev.bus_id;
+	ret = dev_set_name(&dev->dev, "lm%d", dev->id);
+	if (ret)
+		return ret;
+	dev->resource.name = dev_name(&dev->dev);
 
 	ret = request_resource(&iomem_resource, &dev->resource);
 	if (ret == 0) {
diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c
index 6f33f58..ff1413e 100644
--- a/arch/arm/plat-omap/mailbox.c
+++ b/arch/arm/plat-omap/mailbox.c
@@ -334,7 +334,7 @@
 	}
 
 	mbox->dev.class = &omap_mbox_class;
-	strlcpy(mbox->dev.bus_id, mbox->name, KOBJ_NAME_LEN);
+	dev_set_name(&mbox->dev, "%s", mbox->name);
 	dev_set_drvdata(&mbox->dev, mbox);
 
 	ret = device_register(&mbox->dev);
diff --git a/arch/avr32/kernel/cpu.c b/arch/avr32/kernel/cpu.c
index b8409ca..e84faff 100644
--- a/arch/avr32/kernel/cpu.c
+++ b/arch/avr32/kernel/cpu.c
@@ -26,14 +26,16 @@
  * XXX: If/when a SMP-capable implementation of AVR32 will ever be
  * made, we must make sure that the code executes on the correct CPU.
  */
-static ssize_t show_pc0event(struct sys_device *dev, char *buf)
+static ssize_t show_pc0event(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long pccr;
 
 	pccr = sysreg_read(PCCR);
 	return sprintf(buf, "0x%lx\n", (pccr >> 12) & 0x3f);
 }
-static ssize_t store_pc0event(struct sys_device *dev, const char *buf,
+static ssize_t store_pc0event(struct sys_device *dev,
+			struct sysdev_attribute *attr, const char *buf,
 			      size_t count)
 {
 	unsigned long val;
@@ -46,15 +48,17 @@
 	sysreg_write(PCCR, val);
 	return count;
 }
-static ssize_t show_pc0count(struct sys_device *dev, char *buf)
+static ssize_t show_pc0count(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long pcnt0;
 
 	pcnt0 = sysreg_read(PCNT0);
 	return sprintf(buf, "%lu\n", pcnt0);
 }
-static ssize_t store_pc0count(struct sys_device *dev, const char *buf,
-			      size_t count)
+static ssize_t store_pc0count(struct sys_device *dev,
+				struct sysdev_attribute *attr,
+				const char *buf, size_t count)
 {
 	unsigned long val;
 	char *endp;
@@ -67,14 +71,16 @@
 	return count;
 }
 
-static ssize_t show_pc1event(struct sys_device *dev, char *buf)
+static ssize_t show_pc1event(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long pccr;
 
 	pccr = sysreg_read(PCCR);
 	return sprintf(buf, "0x%lx\n", (pccr >> 18) & 0x3f);
 }
-static ssize_t store_pc1event(struct sys_device *dev, const char *buf,
+static ssize_t store_pc1event(struct sys_device *dev,
+			      struct sysdev_attribute *attr, const char *buf,
 			      size_t count)
 {
 	unsigned long val;
@@ -87,14 +93,16 @@
 	sysreg_write(PCCR, val);
 	return count;
 }
-static ssize_t show_pc1count(struct sys_device *dev, char *buf)
+static ssize_t show_pc1count(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long pcnt1;
 
 	pcnt1 = sysreg_read(PCNT1);
 	return sprintf(buf, "%lu\n", pcnt1);
 }
-static ssize_t store_pc1count(struct sys_device *dev, const char *buf,
+static ssize_t store_pc1count(struct sys_device *dev,
+				struct sysdev_attribute *attr, const char *buf,
 			      size_t count)
 {
 	unsigned long val;
@@ -108,14 +116,16 @@
 	return count;
 }
 
-static ssize_t show_pccycles(struct sys_device *dev, char *buf)
+static ssize_t show_pccycles(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long pccnt;
 
 	pccnt = sysreg_read(PCCNT);
 	return sprintf(buf, "%lu\n", pccnt);
 }
-static ssize_t store_pccycles(struct sys_device *dev, const char *buf,
+static ssize_t store_pccycles(struct sys_device *dev,
+				struct sysdev_attribute *attr, const char *buf,
 			      size_t count)
 {
 	unsigned long val;
@@ -129,14 +139,16 @@
 	return count;
 }
 
-static ssize_t show_pcenable(struct sys_device *dev, char *buf)
+static ssize_t show_pcenable(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long pccr;
 
 	pccr = sysreg_read(PCCR);
 	return sprintf(buf, "%c\n", (pccr & 1)?'1':'0');
 }
-static ssize_t store_pcenable(struct sys_device *dev, const char *buf,
+static ssize_t store_pcenable(struct sys_device *dev,
+			      struct sysdev_attribute *attr, const char *buf,
 			      size_t count)
 {
 	unsigned long pccr, val;
diff --git a/arch/ia64/kernel/err_inject.c b/arch/ia64/kernel/err_inject.c
index b642648..c539c68 100644
--- a/arch/ia64/kernel/err_inject.c
+++ b/arch/ia64/kernel/err_inject.c
@@ -55,7 +55,8 @@
 
 #define show(name) 							\
 static ssize_t 								\
-show_##name(struct sys_device *dev, char *buf)				\
+show_##name(struct sys_device *dev, struct sysdev_attribute *attr,	\
+		char *buf)						\
 {									\
 	u32 cpu=dev->id;						\
 	return sprintf(buf, "%lx\n", name[cpu]);			\
@@ -63,7 +64,8 @@
 
 #define store(name)							\
 static ssize_t 								\
-store_##name(struct sys_device *dev, const char *buf, size_t size)	\
+store_##name(struct sys_device *dev, struct sysdev_attribute *attr,	\
+					const char *buf, size_t size)	\
 {									\
 	unsigned int cpu=dev->id;					\
 	name[cpu] = simple_strtoull(buf, NULL, 16);			\
@@ -76,7 +78,8 @@
  * processor. The cpu number in driver is only used for storing data.
  */
 static ssize_t
-store_call_start(struct sys_device *dev, const char *buf, size_t size)
+store_call_start(struct sys_device *dev, struct sysdev_attribute *attr,
+		const char *buf, size_t size)
 {
 	unsigned int cpu=dev->id;
 	unsigned long call_start = simple_strtoull(buf, NULL, 16);
@@ -124,14 +127,16 @@
 store(err_type_info)
 
 static ssize_t
-show_virtual_to_phys(struct sys_device *dev, char *buf)
+show_virtual_to_phys(struct sys_device *dev, struct sysdev_attribute *attr,
+			char *buf)
 {
 	unsigned int cpu=dev->id;
 	return sprintf(buf, "%lx\n", phys_addr[cpu]);
 }
 
 static ssize_t
-store_virtual_to_phys(struct sys_device *dev, const char *buf, size_t size)
+store_virtual_to_phys(struct sys_device *dev, struct sysdev_attribute *attr,
+			const char *buf, size_t size)
 {
 	unsigned int cpu=dev->id;
 	u64 virt_addr=simple_strtoull(buf, NULL, 16);
@@ -154,7 +159,8 @@
 store(err_struct_info)
 
 static ssize_t
-show_err_data_buffer(struct sys_device *dev, char *buf)
+show_err_data_buffer(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	unsigned int cpu=dev->id;
 
@@ -165,7 +171,9 @@
 }
 
 static ssize_t
-store_err_data_buffer(struct sys_device *dev, const char *buf, size_t size)
+store_err_data_buffer(struct sys_device *dev,
+			struct sysdev_attribute *attr,
+			const char *buf, size_t size)
 {
 	unsigned int cpu=dev->id;
 	int ret;
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index b556419..dfd868b 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -522,8 +522,8 @@
 		atomic_set(&channel_wqs[i].in_open, 0);
 		mutex_init(&channel_wqs[i].mutex);
 
-		dev = device_create(mt_class, NULL, MKDEV(major, i),
-		                    "%s%d", module_name, i);
+		dev = device_create_drvdata(mt_class, NULL, MKDEV(major, i),
+					    NULL, "%s%d", module_name, i);
 		if (IS_ERR(dev)) {
 			err = PTR_ERR(dev);
 			goto out_chrdev;
diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c
index 28b012a..66e3e3f 100644
--- a/arch/mips/sibyte/common/sb_tbprof.c
+++ b/arch/mips/sibyte/common/sb_tbprof.c
@@ -576,7 +576,8 @@
 
 	tb_class = tbc;
 
-	dev = device_create(tbc, NULL, MKDEV(SBPROF_TB_MAJOR, 0), "tb");
+	dev = device_create_drvdata(tbc, NULL, MKDEV(SBPROF_TB_MAJOR, 0),
+				    NULL, "tb");
 	if (IS_ERR(dev)) {
 		err = PTR_ERR(dev);
 		goto out_class;
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index c8127f8..aba0ba9 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -28,7 +28,9 @@
 /* Time in microseconds we delay before sleeping in the idle loop */
 DEFINE_PER_CPU(unsigned long, smt_snooze_delay) = { 100 };
 
-static ssize_t store_smt_snooze_delay(struct sys_device *dev, const char *buf,
+static ssize_t store_smt_snooze_delay(struct sys_device *dev,
+				      struct sysdev_attribute *attr,
+				      const char *buf,
 				      size_t count)
 {
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev);
@@ -44,7 +46,9 @@
 	return count;
 }
 
-static ssize_t show_smt_snooze_delay(struct sys_device *dev, char *buf)
+static ssize_t show_smt_snooze_delay(struct sys_device *dev,
+				     struct sysdev_attribute *attr,
+				     char *buf)
 {
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev);
 
@@ -152,14 +156,17 @@
 	mtspr(ADDRESS, val); \
 	return 0; \
 } \
-static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+			struct sysdev_attribute *attr, \
+			char *buf) \
 { \
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
 	unsigned long val = run_on_cpu(cpu->sysdev.id, read_##NAME, 0); \
 	return sprintf(buf, "%lx\n", val); \
 } \
 static ssize_t __used \
-	store_##NAME(struct sys_device *dev, const char *buf, size_t count) \
+	store_##NAME(struct sys_device *dev, struct sysdev_attribute *attr, \
+			const char *buf, size_t count) \
 { \
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
 	unsigned long val; \
diff --git a/arch/powerpc/platforms/cell/cbe_thermal.c b/arch/powerpc/platforms/cell/cbe_thermal.c
index 4852bf3..4d4c8c1 100644
--- a/arch/powerpc/platforms/cell/cbe_thermal.c
+++ b/arch/powerpc/platforms/cell/cbe_thermal.c
@@ -97,7 +97,8 @@
 	return value.spe[spu->spe_id];
 }
 
-static ssize_t spu_show_temp(struct sys_device *sysdev, char *buf)
+static ssize_t spu_show_temp(struct sys_device *sysdev, struct sysdev_attribute *attr,
+			char *buf)
 {
 	u8 value;
 	struct cbe_pmd_regs __iomem *pmd_regs;
@@ -146,32 +147,38 @@
 	return size;
 }
 
-static ssize_t spu_show_throttle_end(struct sys_device *sysdev, char *buf)
+static ssize_t spu_show_throttle_end(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return show_throttle(get_pmd_regs(sysdev), buf, 0);
 }
 
-static ssize_t spu_show_throttle_begin(struct sys_device *sysdev, char *buf)
+static ssize_t spu_show_throttle_begin(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return show_throttle(get_pmd_regs(sysdev), buf, 8);
 }
 
-static ssize_t spu_show_throttle_full_stop(struct sys_device *sysdev, char *buf)
+static ssize_t spu_show_throttle_full_stop(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return show_throttle(get_pmd_regs(sysdev), buf, 16);
 }
 
-static ssize_t spu_store_throttle_end(struct sys_device *sysdev, const char *buf, size_t size)
+static ssize_t spu_store_throttle_end(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, const char *buf, size_t size)
 {
 	return store_throttle(get_pmd_regs(sysdev), buf, size, 0);
 }
 
-static ssize_t spu_store_throttle_begin(struct sys_device *sysdev, const char *buf, size_t size)
+static ssize_t spu_store_throttle_begin(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, const char *buf, size_t size)
 {
 	return store_throttle(get_pmd_regs(sysdev), buf, size, 8);
 }
 
-static ssize_t spu_store_throttle_full_stop(struct sys_device *sysdev, const char *buf, size_t size)
+static ssize_t spu_store_throttle_full_stop(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, const char *buf, size_t size)
 {
 	return store_throttle(get_pmd_regs(sysdev), buf, size, 16);
 }
@@ -192,43 +199,51 @@
 
 /* shows the temperature of the DTS on the PPE,
  * located near the linear thermal sensor */
-static ssize_t ppe_show_temp0(struct sys_device *sysdev, char *buf)
+static ssize_t ppe_show_temp0(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return ppe_show_temp(sysdev, buf, 32);
 }
 
 /* shows the temperature of the second DTS on the PPE */
-static ssize_t ppe_show_temp1(struct sys_device *sysdev, char *buf)
+static ssize_t ppe_show_temp1(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return ppe_show_temp(sysdev, buf, 0);
 }
 
-static ssize_t ppe_show_throttle_end(struct sys_device *sysdev, char *buf)
+static ssize_t ppe_show_throttle_end(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return show_throttle(cbe_get_cpu_pmd_regs(sysdev->id), buf, 32);
 }
 
-static ssize_t ppe_show_throttle_begin(struct sys_device *sysdev, char *buf)
+static ssize_t ppe_show_throttle_begin(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return show_throttle(cbe_get_cpu_pmd_regs(sysdev->id), buf, 40);
 }
 
-static ssize_t ppe_show_throttle_full_stop(struct sys_device *sysdev, char *buf)
+static ssize_t ppe_show_throttle_full_stop(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	return show_throttle(cbe_get_cpu_pmd_regs(sysdev->id), buf, 48);
 }
 
-static ssize_t ppe_store_throttle_end(struct sys_device *sysdev, const char *buf, size_t size)
+static ssize_t ppe_store_throttle_end(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, const char *buf, size_t size)
 {
 	return store_throttle(cbe_get_cpu_pmd_regs(sysdev->id), buf, size, 32);
 }
 
-static ssize_t ppe_store_throttle_begin(struct sys_device *sysdev, const char *buf, size_t size)
+static ssize_t ppe_store_throttle_begin(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, const char *buf, size_t size)
 {
 	return store_throttle(cbe_get_cpu_pmd_regs(sysdev->id), buf, size, 40);
 }
 
-static ssize_t ppe_store_throttle_full_stop(struct sys_device *sysdev, const char *buf, size_t size)
+static ssize_t ppe_store_throttle_full_stop(struct sys_device *sysdev,
+			struct sysdev_attribute *attr, const char *buf, size_t size)
 {
 	return store_throttle(cbe_get_cpu_pmd_regs(sysdev->id), buf, size, 48);
 }
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 78f905b..a5bdb89 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -703,7 +703,8 @@
 }
 
 
-static ssize_t spu_stat_show(struct sys_device *sysdev, char *buf)
+static ssize_t spu_stat_show(struct sys_device *sysdev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct spu *spu = container_of(sysdev, struct spu, sysdev);
 
diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index 609c46d..768c262 100644
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -367,7 +367,7 @@
 	viaisa = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
 	if (!viaisa)
 		return;
-	printk("Fixing VIA IDE, force legacy mode on '%s'\n", viaide->dev.bus_id);
+	dev_info(&viaide->dev, "Fixing VIA IDE, force legacy mode on\n");
 
 	pci_read_config_byte(viaide, PCI_CLASS_PROG, &progif);
 	pci_write_config_byte(viaide, PCI_CLASS_PROG, progif & ~0x5);
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index b678103..b795b3e 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -864,7 +864,8 @@
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static ssize_t cpu_configure_show(struct sys_device *dev, char *buf)
+static ssize_t cpu_configure_show(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	ssize_t count;
 
@@ -874,8 +875,9 @@
 	return count;
 }
 
-static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf,
-				   size_t count)
+static ssize_t cpu_configure_store(struct sys_device *dev,
+				  struct sysdev_attribute *attr,
+				  const char *buf, size_t count)
 {
 	int cpu = dev->id;
 	int val, rc;
@@ -922,7 +924,8 @@
 static SYSDEV_ATTR(configure, 0644, cpu_configure_show, cpu_configure_store);
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static ssize_t cpu_polarization_show(struct sys_device *dev, char *buf)
+static ssize_t cpu_polarization_show(struct sys_device *dev,
+				     struct sysdev_attribute *attr, char *buf)
 {
 	int cpu = dev->id;
 	ssize_t count;
@@ -950,7 +953,8 @@
 }
 static SYSDEV_ATTR(polarization, 0444, cpu_polarization_show, NULL);
 
-static ssize_t show_cpu_address(struct sys_device *dev, char *buf)
+static ssize_t show_cpu_address(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	return sprintf(buf, "%d\n", __cpu_logical_map[dev->id]);
 }
@@ -970,7 +974,8 @@
 	.attrs = cpu_common_attrs,
 };
 
-static ssize_t show_capability(struct sys_device *dev, char *buf)
+static ssize_t show_capability(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	unsigned int capability;
 	int rc;
@@ -982,7 +987,8 @@
 }
 static SYSDEV_ATTR(capability, 0444, show_capability, NULL);
 
-static ssize_t show_idle_count(struct sys_device *dev, char *buf)
+static ssize_t show_idle_count(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct s390_idle_data *idle;
 	unsigned long long idle_count;
@@ -995,7 +1001,8 @@
 }
 static SYSDEV_ATTR(idle_count, 0444, show_idle_count, NULL);
 
-static ssize_t show_idle_time(struct sys_device *dev, char *buf)
+static ssize_t show_idle_time(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct s390_idle_data *idle;
 	unsigned long long new_time;
@@ -1112,7 +1119,9 @@
 	return rc;
 }
 
-static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf,
+static ssize_t __ref rescan_store(struct sys_device *dev,
+				  struct sysdev_attribute *attr,
+				  const char *buf,
 				  size_t count)
 {
 	int rc;
@@ -1123,7 +1132,9 @@
 static SYSDEV_ATTR(rescan, 0200, NULL, rescan_store);
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static ssize_t dispatching_show(struct sys_device *dev, char *buf)
+static ssize_t dispatching_show(struct sys_device *dev,
+				struct sysdev_attribute *attr,
+				char *buf)
 {
 	ssize_t count;
 
@@ -1133,8 +1144,9 @@
 	return count;
 }
 
-static ssize_t dispatching_store(struct sys_device *dev, const char *buf,
-				 size_t count)
+static ssize_t dispatching_store(struct sys_device *dev,
+				 struct sysdev_attribute *attr,
+				 const char *buf, size_t count)
 {
 	int val, rc;
 	char delim;
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index f2cede3..ab70d9b 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -1100,7 +1100,9 @@
 		return etr_port1_online ? &etr_port1 : NULL;
 }
 
-static ssize_t etr_online_show(struct sys_device *dev, char *buf)
+static ssize_t etr_online_show(struct sys_device *dev,
+				struct sysdev_attribute *attr,
+				char *buf)
 {
 	unsigned int online;
 
@@ -1109,7 +1111,8 @@
 }
 
 static ssize_t etr_online_store(struct sys_device *dev,
-			      const char *buf, size_t count)
+				struct sysdev_attribute *attr,
+				const char *buf, size_t count)
 {
 	unsigned int value;
 
@@ -1136,7 +1139,9 @@
 
 static SYSDEV_ATTR(online, 0600, etr_online_show, etr_online_store);
 
-static ssize_t etr_stepping_control_show(struct sys_device *dev, char *buf)
+static ssize_t etr_stepping_control_show(struct sys_device *dev,
+					struct sysdev_attribute *attr,
+					char *buf)
 {
 	return sprintf(buf, "%i\n", (dev == &etr_port0_dev) ?
 		       etr_eacr.e0 : etr_eacr.e1);
@@ -1144,7 +1149,8 @@
 
 static SYSDEV_ATTR(stepping_control, 0400, etr_stepping_control_show, NULL);
 
-static ssize_t etr_mode_code_show(struct sys_device *dev, char *buf)
+static ssize_t etr_mode_code_show(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	if (!etr_port0_online && !etr_port1_online)
 		/* Status word is not uptodate if both ports are offline. */
@@ -1155,7 +1161,8 @@
 
 static SYSDEV_ATTR(state_code, 0400, etr_mode_code_show, NULL);
 
-static ssize_t etr_untuned_show(struct sys_device *dev, char *buf)
+static ssize_t etr_untuned_show(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1166,7 +1173,8 @@
 
 static SYSDEV_ATTR(untuned, 0400, etr_untuned_show, NULL);
 
-static ssize_t etr_network_id_show(struct sys_device *dev, char *buf)
+static ssize_t etr_network_id_show(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1177,7 +1185,8 @@
 
 static SYSDEV_ATTR(network, 0400, etr_network_id_show, NULL);
 
-static ssize_t etr_id_show(struct sys_device *dev, char *buf)
+static ssize_t etr_id_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1188,7 +1197,8 @@
 
 static SYSDEV_ATTR(id, 0400, etr_id_show, NULL);
 
-static ssize_t etr_port_number_show(struct sys_device *dev, char *buf)
+static ssize_t etr_port_number_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1199,7 +1209,8 @@
 
 static SYSDEV_ATTR(port, 0400, etr_port_number_show, NULL);
 
-static ssize_t etr_coupled_show(struct sys_device *dev, char *buf)
+static ssize_t etr_coupled_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1210,7 +1221,8 @@
 
 static SYSDEV_ATTR(coupled, 0400, etr_coupled_show, NULL);
 
-static ssize_t etr_local_time_show(struct sys_device *dev, char *buf)
+static ssize_t etr_local_time_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
@@ -1221,7 +1233,8 @@
 
 static SYSDEV_ATTR(local_time, 0400, etr_local_time_show, NULL);
 
-static ssize_t etr_utc_offset_show(struct sys_device *dev, char *buf)
+static ssize_t etr_utc_offset_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct etr_aib *aib = etr_aib_from_dev(dev);
 
diff --git a/arch/sh/drivers/dma/dma-sysfs.c b/arch/sh/drivers/dma/dma-sysfs.c
index 51b57c0..347ee11 100644
--- a/arch/sh/drivers/dma/dma-sysfs.c
+++ b/arch/sh/drivers/dma/dma-sysfs.c
@@ -23,7 +23,8 @@
 };
 EXPORT_SYMBOL(dma_sysclass);
 
-static ssize_t dma_show_devices(struct sys_device *dev, char *buf)
+static ssize_t dma_show_devices(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	ssize_t len = 0;
 	int i;
@@ -57,13 +58,15 @@
 }
 postcore_initcall(dma_sysclass_init);
 
-static ssize_t dma_show_dev_id(struct sys_device *dev, char *buf)
+static ssize_t dma_show_dev_id(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct dma_channel *channel = to_dma_channel(dev);
 	return sprintf(buf, "%s\n", channel->dev_id);
 }
 
 static ssize_t dma_store_dev_id(struct sys_device *dev,
+				struct sysdev_attribute *attr,
 				const char *buf, size_t count)
 {
 	struct dma_channel *channel = to_dma_channel(dev);
@@ -74,6 +77,7 @@
 static SYSDEV_ATTR(dev_id, S_IRUGO | S_IWUSR, dma_show_dev_id, dma_store_dev_id);
 
 static ssize_t dma_store_config(struct sys_device *dev,
+				struct sysdev_attribute *attr,
 				const char *buf, size_t count)
 {
 	struct dma_channel *channel = to_dma_channel(dev);
@@ -87,13 +91,15 @@
 
 static SYSDEV_ATTR(config, S_IWUSR, NULL, dma_store_config);
 
-static ssize_t dma_show_mode(struct sys_device *dev, char *buf)
+static ssize_t dma_show_mode(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct dma_channel *channel = to_dma_channel(dev);
 	return sprintf(buf, "0x%08x\n", channel->mode);
 }
 
 static ssize_t dma_store_mode(struct sys_device *dev,
+			      struct sysdev_attribute *attr,
 			      const char *buf, size_t count)
 {
 	struct dma_channel *channel = to_dma_channel(dev);
@@ -104,7 +110,8 @@
 static SYSDEV_ATTR(mode, S_IRUGO | S_IWUSR, dma_show_mode, dma_store_mode);
 
 #define dma_ro_attr(field, fmt)						\
-static ssize_t dma_show_##field(struct sys_device *dev, char *buf)	\
+static ssize_t dma_show_##field(struct sys_device *dev, 		\
+				struct sysdev_attribute *attr, char *buf)\
 {									\
 	struct dma_channel *channel = to_dma_channel(dev);		\
 	return sprintf(buf, fmt, channel->field);			\
diff --git a/arch/sparc64/kernel/ebus.c b/arch/sparc64/kernel/ebus.c
index c49d038..4d58d7c 100644
--- a/arch/sparc64/kernel/ebus.c
+++ b/arch/sparc64/kernel/ebus.c
@@ -401,7 +401,7 @@
 	dev->ofdev.node = dp;
 	dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
 	dev->ofdev.dev.bus = &ebus_bus_type;
-	sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);
+	dev_set_name(&dev->ofdev.dev, "ebus[%08x]", dp->node);
 
 	/* Register with core */
 	if (of_device_register(&dev->ofdev) != 0)
@@ -501,7 +501,7 @@
 		ebus->ofdev.node = dp;
 		ebus->ofdev.dev.parent = &pdev->dev;
 		ebus->ofdev.dev.bus = &ebus_bus_type;
-		sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);
+		dev_set_name(&ebus->ofdev.dev, "ebus%d", num_ebus);
 
 		/* Register with core */
 		if (of_device_register(&ebus->ofdev) != 0)
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index d569f60..4fd48ab 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -797,9 +797,9 @@
 	op->dev.parent = parent;
 	op->dev.bus = &of_platform_bus_type;
 	if (!parent)
-		strcpy(op->dev.bus_id, "root");
+		dev_set_name(&op->dev, "root");
 	else
-		sprintf(op->dev.bus_id, "%08x", dp->node);
+		dev_set_name(&op->dev, "%08x", dp->node);
 
 	if (of_device_register(op)) {
 		printk("%s: Could not register of device.\n",
diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index d00a365..5509619 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -408,7 +408,7 @@
 	dev->class = class >> 8;
 	dev->revision = class & 0xff;
 
-	sprintf(dev->dev.bus_id, "%04x:%02x:%02x.%d", pci_domain_nr(bus),
+	dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(bus),
 		dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
 
 	if (ofpci_verbose)
diff --git a/arch/sparc64/kernel/sysfs.c b/arch/sparc64/kernel/sysfs.c
index e885034..84e5ce1 100644
--- a/arch/sparc64/kernel/sysfs.c
+++ b/arch/sparc64/kernel/sysfs.c
@@ -14,7 +14,8 @@
 static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));
 
 #define SHOW_MMUSTAT_ULONG(NAME) \
-static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+			struct sysdev_attribute *attr, char *buf) \
 { \
 	struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
 	return sprintf(buf, "%lu\n", p->NAME); \
@@ -135,13 +136,16 @@
 	return sun4v_mmustat_conf(ra, &orig_ra);
 }
 
-static ssize_t show_mmustat_enable(struct sys_device *s, char *buf)
+static ssize_t show_mmustat_enable(struct sys_device *s,
+				struct sysdev_attribute *attr, char *buf)
 {
 	unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
 	return sprintf(buf, "%lx\n", val);
 }
 
-static ssize_t store_mmustat_enable(struct sys_device *s, const char *buf, size_t count)
+static ssize_t store_mmustat_enable(struct sys_device *s,
+			struct sysdev_attribute *attr, const char *buf,
+			size_t count)
 {
 	unsigned long val, err;
 	int ret = sscanf(buf, "%ld", &val);
@@ -179,14 +183,16 @@
 #endif
 
 #define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
-static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+		struct sysdev_attribute *attr, char *buf) \
 { \
 	cpuinfo_sparc *c = &cpu_data(dev->id); \
 	return sprintf(buf, "%lu\n", c->MEMBER); \
 }
 
 #define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
-static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+static ssize_t show_##NAME(struct sys_device *dev, \
+		struct sysdev_attribute *attr, char *buf) \
 { \
 	cpuinfo_sparc *c = &cpu_data(dev->id); \
 	return sprintf(buf, "%u\n", c->MEMBER); \
diff --git a/arch/sparc64/kernel/vio.c b/arch/sparc64/kernel/vio.c
index e78b351..a490077 100644
--- a/arch/sparc64/kernel/vio.c
+++ b/arch/sparc64/kernel/vio.c
@@ -224,7 +224,7 @@
 	if (!strcmp(type, "domain-services-port"))
 		bus_id_name = "ds";
 
-	if (strlen(bus_id_name) >= KOBJ_NAME_LEN - 4) {
+	if (strlen(bus_id_name) >= BUS_ID_SIZE - 4) {
 		printk(KERN_ERR "VIO: bus_id_name [%s] is too long.\n",
 		       bus_id_name);
 		return NULL;
@@ -260,16 +260,14 @@
 	vio_fill_channel_info(hp, mp, vdev);
 
 	if (!id) {
-		snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%s",
-			 bus_id_name);
+		dev_set_name(&vdev->dev, "%s", bus_id_name);
 		vdev->dev_no = ~(u64)0;
 	} else if (!cfg_handle) {
-		snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%s-%lu",
-			 bus_id_name, *id);
+		dev_set_name(&vdev->dev, "%s-%lu", bus_id_name, *id);
 		vdev->dev_no = *id;
 	} else {
-		snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%s-%lu-%lu",
-			 bus_id_name, *cfg_handle, *id);
+		dev_set_name(&vdev->dev, "%s-%lu-%lu", bus_id_name,
+			     *cfg_handle, *id);
 		vdev->dev_no = *cfg_handle;
 	}
 
@@ -292,12 +290,12 @@
 	}
 	vdev->dp = dp;
 
-	printk(KERN_INFO "VIO: Adding device %s\n", vdev->dev.bus_id);
+	printk(KERN_INFO "VIO: Adding device %s\n", dev_name(&vdev->dev));
 
 	err = device_register(&vdev->dev);
 	if (err) {
 		printk(KERN_ERR "VIO: Could not register device %s, err=%d\n",
-		       vdev->dev.bus_id, err);
+		       dev_name(&vdev->dev), err);
 		kfree(vdev);
 		return NULL;
 	}
@@ -330,7 +328,7 @@
 	dev = device_find_child(&root_vdev->dev, (void *) node,
 				vio_md_node_match);
 	if (dev) {
-		printk(KERN_INFO "VIO: Removing device %s\n", dev->bus_id);
+		printk(KERN_INFO "VIO: Removing device %s\n", dev_name(dev));
 
 		device_unregister(dev);
 	}
diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index c4a7ec3..9ab65be 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -762,10 +762,14 @@
 
 /* Why are there no generic functions for this? */
 #define ACCESSOR(name, var, start) \
-	static ssize_t show_ ## name(struct sys_device *s, char *buf) {	\
+	static ssize_t show_ ## name(struct sys_device *s,		\
+				     struct sysdev_attribute *attr,	\
+				     char *buf) {			\
 		return sprintf(buf, "%lx\n", (unsigned long)var);	\
 	}								\
-	static ssize_t set_ ## name(struct sys_device *s,const char *buf,size_t siz) { \
+	static ssize_t set_ ## name(struct sys_device *s,		\
+				    struct sysdev_attribute *attr,	\
+				    const char *buf, size_t siz) {	\
 		char *end;						\
 		unsigned long new = simple_strtoul(buf, &end, 0);	\
 		if (end == buf) return -EINVAL;				\
@@ -786,14 +790,16 @@
 ACCESSOR(bank4ctl,bank[4],mce_restart())
 ACCESSOR(bank5ctl,bank[5],mce_restart())
 
-static ssize_t show_trigger(struct sys_device *s, char *buf)
+static ssize_t show_trigger(struct sys_device *s, struct sysdev_attribute *attr,
+				char *buf)
 {
 	strcpy(buf, trigger);
 	strcat(buf, "\n");
 	return strlen(trigger) + 1;
 }
 
-static ssize_t set_trigger(struct sys_device *s,const char *buf,size_t siz)
+static ssize_t set_trigger(struct sys_device *s, struct sysdev_attribute *attr,
+				const char *buf,size_t siz)
 {
 	char *p;
 	int len;
@@ -806,12 +812,12 @@
 }
 
 static SYSDEV_ATTR(trigger, 0644, show_trigger, set_trigger);
-ACCESSOR(tolerant,tolerant,)
+static SYSDEV_INT_ATTR(tolerant, 0644, tolerant);
 ACCESSOR(check_interval,check_interval,mce_restart())
 static struct sysdev_attribute *mce_attributes[] = {
 	&attr_bank0ctl, &attr_bank1ctl, &attr_bank2ctl,
 	&attr_bank3ctl, &attr_bank4ctl, &attr_bank5ctl,
-	&attr_tolerant, &attr_check_interval, &attr_trigger,
+	&attr_tolerant.attr, &attr_check_interval, &attr_trigger,
 	NULL
 };
 
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index 1f4cc48..d5ae224 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -35,6 +35,7 @@
 
 #define define_therm_throt_sysdev_show_func(name)                            \
 static ssize_t therm_throt_sysdev_show_##name(struct sys_device *dev,        \
+					struct sysdev_attribute *attr,	     \
                                               char *buf)                     \
 {                                                                            \
 	unsigned int cpu = dev->id;                                          \
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 2de5fa2..14b11b3 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -141,8 +141,8 @@
 {
 	struct device *dev;
 
-	dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu),
-			    "cpu%d", cpu);
+	dev = device_create_drvdata(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu),
+				    NULL, "cpu%d", cpu);
 	return IS_ERR(dev) ? PTR_ERR(dev) : 0;
 }
 
diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c
index 56b9331..fc47906 100644
--- a/arch/x86/kernel/microcode.c
+++ b/arch/x86/kernel/microcode.c
@@ -644,7 +644,9 @@
 	mutex_unlock(&microcode_mutex);
 }
 
-static ssize_t reload_store(struct sys_device *dev, const char *buf, size_t sz)
+static ssize_t reload_store(struct sys_device *dev,
+			    struct sysdev_attribute *attr,
+			    const char *buf, size_t sz)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
 	char *end;
@@ -674,14 +676,16 @@
 	return sz;
 }
 
-static ssize_t version_show(struct sys_device *dev, char *buf)
+static ssize_t version_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
 
 	return sprintf(buf, "0x%x\n", uci->rev);
 }
 
-static ssize_t pf_show(struct sys_device *dev, char *buf)
+static ssize_t pf_show(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
 
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index a153b39..9fd80955 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -149,8 +149,8 @@
 {
 	struct device *dev;
 
-	dev = device_create(msr_class, NULL, MKDEV(MSR_MAJOR, cpu),
-			    "msr%d", cpu);
+	dev = device_create_drvdata(msr_class, NULL, MKDEV(MSR_MAJOR, cpu),
+				    NULL, "msr%d", cpu);
 	return IS_ERR(dev) ? PTR_ERR(dev) : 0;
 }
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index a4213c0..cbecb05 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -314,8 +314,7 @@
 {
 #ifdef CONFIG_PCI
 	if (mask > 0xffffffff && forbid_dac > 0) {
-		printk(KERN_INFO "PCI: Disallowing DAC for device %s\n",
-				 dev->bus_id);
+		dev_info(dev, "PCI: Disallowing DAC for device\n");
 		return 0;
 	}
 #endif
@@ -342,8 +341,7 @@
 	   type. Normally this doesn't make any difference, but gives
 	   more gentle handling of IOMMU overflow. */
 	if (iommu_sac_force && (mask >= DMA_40BIT_MASK)) {
-		printk(KERN_INFO "%s: Force SAC with mask %Lx\n",
-				 dev->bus_id, mask);
+		dev_info(dev, "Force SAC with mask %Lx\n", mask);
 		return 0;
 	}
 
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index be60961..df5f142 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -198,9 +198,7 @@
 	 * out. Hopefully no network devices use single mappings that big.
 	 */
 
-	printk(KERN_ERR
-		"PCI-DMA: Out of IOMMU space for %lu bytes at device %s\n",
-		size, dev->bus_id);
+	dev_err(dev, "PCI-DMA: Out of IOMMU space for %lu bytes\n", size);
 
 	if (size > PAGE_SIZE*EMERGENCY_PAGES) {
 		if (dir == PCI_DMA_FROMDEVICE || dir == PCI_DMA_BIDIRECTIONAL)
diff --git a/block/bsg.c b/block/bsg.c
index 5fb9b0b..5a68b09 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -1044,7 +1044,8 @@
 	bcd->release = release;
 	kref_init(&bcd->ref);
 	dev = MKDEV(bsg_major, bcd->minor);
-	class_dev = device_create(bsg_class, parent, dev, "%s", devname);
+	class_dev = device_create_drvdata(bsg_class, parent, dev, NULL,
+					  "%s", devname);
 	if (IS_ERR(class_dev)) {
 		ret = PTR_ERR(class_dev);
 		goto put_dev;
diff --git a/block/genhd.c b/block/genhd.c
index 9074f38..c13cc77 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -183,6 +183,7 @@
 void add_disk(struct gendisk *disk)
 {
 	struct backing_dev_info *bdi;
+	int retval;
 
 	disk->flags |= GENHD_FL_UP;
 	blk_register_region(MKDEV(disk->major, disk->first_minor),
@@ -193,7 +194,8 @@
 
 	bdi = &disk->queue->backing_dev_info;
 	bdi_register_dev(bdi, MKDEV(disk->major, disk->first_minor));
-	sysfs_create_link(&disk->dev.kobj, &bdi->dev->kobj, "bdi");
+	retval = sysfs_create_link(&disk->dev.kobj, &bdi->dev->kobj, "bdi");
+	WARN_ON(retval);
 }
 
 EXPORT_SYMBOL(add_disk);
@@ -225,89 +227,111 @@
 }
 
 /*
+ * print a partitions - intended for places where the root filesystem can't be
+ * mounted and thus to give the victim some idea of what went wrong
+ */
+static int printk_partition(struct device *dev, void *data)
+{
+	struct gendisk *sgp;
+	char buf[BDEVNAME_SIZE];
+	int n;
+
+	if (dev->type != &disk_type)
+		goto exit;
+
+	sgp = dev_to_disk(dev);
+	/*
+	 * Don't show empty devices or things that have been surpressed
+	 */
+	if (get_capacity(sgp) == 0 ||
+	    (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO))
+		goto exit;
+
+	/*
+	 * Note, unlike /proc/partitions, I am showing the numbers in
+	 * hex - the same format as the root= option takes.
+	 */
+	printk("%02x%02x %10llu %s",
+		sgp->major, sgp->first_minor,
+		(unsigned long long)get_capacity(sgp) >> 1,
+		disk_name(sgp, 0, buf));
+	if (sgp->driverfs_dev != NULL &&
+	    sgp->driverfs_dev->driver != NULL)
+		printk(" driver: %s\n",
+			sgp->driverfs_dev->driver->name);
+	else
+		printk(" (driver?)\n");
+
+	/* now show the partitions */
+	for (n = 0; n < sgp->minors - 1; ++n) {
+		if (sgp->part[n] == NULL)
+			goto exit;
+		if (sgp->part[n]->nr_sects == 0)
+			goto exit;
+		printk("  %02x%02x %10llu %s\n",
+			sgp->major, n + 1 + sgp->first_minor,
+			(unsigned long long)sgp->part[n]->nr_sects >> 1,
+			disk_name(sgp, n + 1, buf));
+	}
+exit:
+	return 0;
+}
+
+/*
  * print a full list of all partitions - intended for places where the root
  * filesystem can't be mounted and thus to give the victim some idea of what
  * went wrong
  */
 void __init printk_all_partitions(void)
 {
-	struct device *dev;
-	struct gendisk *sgp;
-	char buf[BDEVNAME_SIZE];
-	int n;
-
 	mutex_lock(&block_class_lock);
-	/* For each block device... */
-	list_for_each_entry(dev, &block_class.devices, node) {
-		if (dev->type != &disk_type)
-			continue;
-		sgp = dev_to_disk(dev);
-		/*
-		 * Don't show empty devices or things that have been surpressed
-		 */
-		if (get_capacity(sgp) == 0 ||
-		    (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO))
-			continue;
-
-		/*
-		 * Note, unlike /proc/partitions, I am showing the numbers in
-		 * hex - the same format as the root= option takes.
-		 */
-		printk("%02x%02x %10llu %s",
-			sgp->major, sgp->first_minor,
-			(unsigned long long)get_capacity(sgp) >> 1,
-			disk_name(sgp, 0, buf));
-		if (sgp->driverfs_dev != NULL &&
-		    sgp->driverfs_dev->driver != NULL)
-			printk(" driver: %s\n",
-				sgp->driverfs_dev->driver->name);
-		else
-			printk(" (driver?)\n");
-
-		/* now show the partitions */
-		for (n = 0; n < sgp->minors - 1; ++n) {
-			if (sgp->part[n] == NULL)
-				continue;
-			if (sgp->part[n]->nr_sects == 0)
-				continue;
-			printk("  %02x%02x %10llu %s\n",
-				sgp->major, n + 1 + sgp->first_minor,
-				(unsigned long long)sgp->part[n]->nr_sects >> 1,
-				disk_name(sgp, n + 1, buf));
-		}
-	}
-
+	class_for_each_device(&block_class, NULL, NULL, printk_partition);
 	mutex_unlock(&block_class_lock);
 }
 
 #ifdef CONFIG_PROC_FS
 /* iterator */
+static int find_start(struct device *dev, void *data)
+{
+	loff_t k = *(loff_t *)data;
+
+	if (dev->type != &disk_type)
+		return 0;
+	if (!k--)
+		return 1;
+	return 0;
+}
+
 static void *part_start(struct seq_file *part, loff_t *pos)
 {
-	loff_t k = *pos;
 	struct device *dev;
+	loff_t n = *pos;
+
+	if (!n)
+		seq_puts(part, "major minor  #blocks  name\n\n");
 
 	mutex_lock(&block_class_lock);
-	list_for_each_entry(dev, &block_class.devices, node) {
-		if (dev->type != &disk_type)
-			continue;
-		if (!k--)
-			return dev_to_disk(dev);
-	}
+	dev = class_find_device(&block_class, NULL, (void *)pos, find_start);
+	if (dev)
+		return dev_to_disk(dev);
 	return NULL;
 }
 
+static int find_next(struct device *dev, void *data)
+{
+	if (dev->type == &disk_type)
+		return 1;
+	return 0;
+}
+
 static void *part_next(struct seq_file *part, void *v, loff_t *pos)
 {
 	struct gendisk *gp = v;
 	struct device *dev;
 	++*pos;
-	list_for_each_entry(dev, &gp->dev.node, node) {
-		if (&dev->node == &block_class.devices)
-			return NULL;
-		if (dev->type == &disk_type)
-			return dev_to_disk(dev);
-	}
+	dev = class_find_device(&block_class, &gp->dev, NULL, find_next);
+	if (dev)
+		return dev_to_disk(dev);
 	return NULL;
 }
 
@@ -322,9 +346,6 @@
 	int n;
 	char buf[BDEVNAME_SIZE];
 
-	if (&sgp->dev.node == block_class.devices.next)
-		seq_puts(part, "major minor  #blocks  name\n\n");
-
 	/* Don't show non-partitionable removeable devices or empty devices */
 	if (!get_capacity(sgp) ||
 			(sgp->minors == 1 && (sgp->flags & GENHD_FL_REMOVABLE)))
@@ -370,7 +391,10 @@
 
 static int __init genhd_device_init(void)
 {
-	int error = class_register(&block_class);
+	int error;
+
+	block_class.dev_kobj = sysfs_dev_block_kobj;
+	error = class_register(&block_class);
 	if (unlikely(error))
 		return error;
 	bdev_map = kobj_map_init(base_probe, &block_class_lock);
@@ -532,6 +556,7 @@
 	.release	= disk_release,
 };
 
+#ifdef CONFIG_PROC_FS
 /*
  * aggregate disk stat collector.  Uses the same stats that the sysfs
  * entries do, above, but makes them available through one seq_file.
@@ -542,16 +567,12 @@
 
 static void *diskstats_start(struct seq_file *part, loff_t *pos)
 {
-	loff_t k = *pos;
 	struct device *dev;
 
 	mutex_lock(&block_class_lock);
-	list_for_each_entry(dev, &block_class.devices, node) {
-		if (dev->type != &disk_type)
-			continue;
-		if (!k--)
-			return dev_to_disk(dev);
-	}
+	dev = class_find_device(&block_class, NULL, (void *)pos, find_start);
+	if (dev)
+		return dev_to_disk(dev);
 	return NULL;
 }
 
@@ -561,12 +582,9 @@
 	struct device *dev;
 
 	++*pos;
-	list_for_each_entry(dev, &gp->dev.node, node) {
-		if (&dev->node == &block_class.devices)
-			return NULL;
-		if (dev->type == &disk_type)
-			return dev_to_disk(dev);
-	}
+	dev = class_find_device(&block_class, &gp->dev, NULL, find_next);
+	if (dev)
+		return dev_to_disk(dev);
 	return NULL;
 }
 
@@ -641,6 +659,7 @@
 	.stop	= diskstats_stop,
 	.show	= diskstats_show
 };
+#endif /* CONFIG_PROC_FS */
 
 static void media_change_notify_thread(struct work_struct *work)
 {
@@ -665,24 +684,38 @@
 EXPORT_SYMBOL_GPL(genhd_media_change_notify);
 #endif  /*  0  */
 
+struct find_block {
+	const char *name;
+	int part;
+};
+
+static int match_id(struct device *dev, void *data)
+{
+	struct find_block *find = data;
+
+	if (dev->type != &disk_type)
+		return 0;
+	if (strcmp(dev->bus_id, find->name) == 0) {
+		struct gendisk *disk = dev_to_disk(dev);
+		if (find->part < disk->minors)
+			return 1;
+	}
+	return 0;
+}
+
 dev_t blk_lookup_devt(const char *name, int part)
 {
 	struct device *dev;
 	dev_t devt = MKDEV(0, 0);
+	struct find_block find;
 
 	mutex_lock(&block_class_lock);
-	list_for_each_entry(dev, &block_class.devices, node) {
-		if (dev->type != &disk_type)
-			continue;
-		if (strcmp(dev->bus_id, name) == 0) {
-			struct gendisk *disk = dev_to_disk(dev);
-
-			if (part < disk->minors)
-				devt = MKDEV(MAJOR(dev->devt),
-					     MINOR(dev->devt) + part);
-			break;
-		}
-	}
+	find.name = name;
+	find.part = part;
+	dev = class_find_device(&block_class, NULL, (void *)&find, match_id);
+	if (dev)
+		devt = MKDEV(MAJOR(dev->devt),
+			     MINOR(dev->devt) + part);
 	mutex_unlock(&block_class_lock);
 
 	return devt;
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 55c17af..2655bc1 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -263,22 +263,22 @@
 		goto end;
 	}
 
-	printk(KERN_INFO PREFIX
-		"%s is registered as cooling_device%d\n",
-		device->dev.bus_id, cdev->id);
+	dev_info(&device->dev, "registered as cooling_device%d\n", cdev->id);
 
 	acpi_driver_data(device) = cdev;
 	result = sysfs_create_link(&device->dev.kobj,
 				   &cdev->device.kobj,
 				   "thermal_cooling");
 	if (result)
-		printk(KERN_ERR PREFIX "Create sysfs link\n");
+		dev_err(&device->dev, "Failed to create sysfs link "
+			"'thermal_cooling'\n");
 
 	result = sysfs_create_link(&cdev->device.kobj,
 				   &device->dev.kobj,
 				   "device");
 	if (result)
-		printk(KERN_ERR PREFIX "Create sysfs link\n");
+		dev_err(&device->dev, "Failed to create sysfs link "
+			"'device'\n");
 
 	result = acpi_fan_add_fs(device);
 	if (result)
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 2f173e8..0841095 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -146,8 +146,7 @@
 	acpi_status status;
 
 	if (dev->archdata.acpi_handle) {
-		printk(KERN_WARNING PREFIX
-		       "Drivers changed 'acpi_handle' for %s\n", dev->bus_id);
+		dev_warn(dev, "Drivers changed 'acpi_handle'\n");
 		return -EINVAL;
 	}
 	get_device(dev);
@@ -195,8 +194,7 @@
 		/* acpi_bind_one increase refcnt by one */
 		put_device(dev);
 	} else {
-		printk(KERN_ERR PREFIX
-		       "Oops, 'acpi_handle' corrupt for %s\n", dev->bus_id);
+		dev_err(dev, "Oops, 'acpi_handle' corrupt\n");
 	}
 	return 0;
 }
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ec0f2d5..e36422a 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -714,9 +714,8 @@
 		goto end;
 	}
 
-	printk(KERN_INFO PREFIX
-		"%s is registered as cooling_device%d\n",
-		device->dev.bus_id, pr->cdev->id);
+	dev_info(&device->dev, "registered as cooling_device%d\n",
+		 pr->cdev->id);
 
 	result = sysfs_create_link(&device->dev.kobj,
 				   &pr->cdev->device.kobj,
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index f3132aa..f6f52c1 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -471,7 +471,7 @@
 	device->dev.release = &acpi_device_release;
 	result = device_add(&device->dev);
 	if(result) {
-		printk(KERN_ERR PREFIX "Error adding device %s", device->dev.bus_id);
+		dev_err(&device->dev, "Error adding device\n");
 		goto end;
 	}
 
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 84c795f..30a3413 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -1179,8 +1179,8 @@
 
 	tz->tz_enabled = 1;
 
-	printk(KERN_INFO PREFIX "%s is registered as thermal_zone%d\n",
-			tz->device->dev.bus_id, tz->thermal_zone->id);
+	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
+		 tz->thermal_zone->id);
 	return 0;
 }
 
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 64c8893..37b9e16 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -762,9 +762,8 @@
 		if (IS_ERR(device->cdev))
 			return;
 
-		printk(KERN_INFO PREFIX
-			"%s is registered as cooling_device%d\n",
-			device->dev->dev.bus_id, device->cdev->id);
+		dev_info(&device->dev->dev, "registered as cooling_device%d\n",
+			 device->cdev->id);
 		result = sysfs_create_link(&device->dev->dev.kobj,
 				&device->cdev->device.kobj,
 				"thermal_cooling");
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index d47482f..6318f6b 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -27,8 +27,9 @@
 	  If unsure say Y here.
 
 config FW_LOADER
-	tristate "Userspace firmware loading support"
+	tristate "Userspace firmware loading support" if EMBEDDED
 	depends on HOTPLUG
+	default y
 	---help---
 	  This option is provided for the case where no in-kernel-tree modules
 	  require userspace firmware loading support, but a module built outside
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 2c9ae43..31dc0cd 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -36,6 +36,33 @@
 };
 #define to_driver(obj) container_of(obj, struct driver_private, kobj)
 
+
+/**
+ * struct class_private - structure to hold the private to the driver core portions of the class structure.
+ *
+ * @class_subsys - the struct kset that defines this class.  This is the main kobject
+ * @class_devices - list of devices associated with this class
+ * @class_interfaces - list of class_interfaces associated with this class
+ * @class_dirs - "glue" directory for virtual devices associated with this class
+ * @class_mutex - mutex to protect the children, devices, and interfaces lists.
+ * @class - pointer back to the struct class that this structure is associated
+ * with.
+ *
+ * This structure is the one that is the actual kobject allowing struct
+ * class to be statically allocated safely.  Nothing outside of the driver
+ * core should ever touch these fields.
+ */
+struct class_private {
+	struct kset class_subsys;
+	struct list_head class_devices;
+	struct list_head class_interfaces;
+	struct kset class_dirs;
+	struct mutex class_mutex;
+	struct class *class;
+};
+#define to_class(obj)	\
+	container_of(obj, struct class_private, class_subsys.kobj)
+
 /* initialisation functions */
 extern int devices_init(void);
 extern int buses_init(void);
diff --git a/drivers/base/class.c b/drivers/base/class.c
index e085af0..839d27c 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -18,20 +18,20 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/genhd.h>
+#include <linux/mutex.h>
 #include "base.h"
 
 #define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr)
-#define to_class(obj) container_of(obj, struct class, subsys.kobj)
 
 static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr,
 			       char *buf)
 {
 	struct class_attribute *class_attr = to_class_attr(attr);
-	struct class *dc = to_class(kobj);
+	struct class_private *cp = to_class(kobj);
 	ssize_t ret = -EIO;
 
 	if (class_attr->show)
-		ret = class_attr->show(dc, buf);
+		ret = class_attr->show(cp->class, buf);
 	return ret;
 }
 
@@ -39,17 +39,18 @@
 				const char *buf, size_t count)
 {
 	struct class_attribute *class_attr = to_class_attr(attr);
-	struct class *dc = to_class(kobj);
+	struct class_private *cp = to_class(kobj);
 	ssize_t ret = -EIO;
 
 	if (class_attr->store)
-		ret = class_attr->store(dc, buf, count);
+		ret = class_attr->store(cp->class, buf, count);
 	return ret;
 }
 
 static void class_release(struct kobject *kobj)
 {
-	struct class *class = to_class(kobj);
+	struct class_private *cp = to_class(kobj);
+	struct class *class = cp->class;
 
 	pr_debug("class '%s': release.\n", class->name);
 
@@ -70,7 +71,7 @@
 	.release	= class_release,
 };
 
-/* Hotplug events for classes go to the class_obj subsys */
+/* Hotplug events for classes go to the class class_subsys */
 static struct kset *class_kset;
 
 
@@ -78,7 +79,8 @@
 {
 	int error;
 	if (cls)
-		error = sysfs_create_file(&cls->subsys.kobj, &attr->attr);
+		error = sysfs_create_file(&cls->p->class_subsys.kobj,
+					  &attr->attr);
 	else
 		error = -EINVAL;
 	return error;
@@ -87,21 +89,20 @@
 void class_remove_file(struct class *cls, const struct class_attribute *attr)
 {
 	if (cls)
-		sysfs_remove_file(&cls->subsys.kobj, &attr->attr);
+		sysfs_remove_file(&cls->p->class_subsys.kobj, &attr->attr);
 }
 
 static struct class *class_get(struct class *cls)
 {
 	if (cls)
-		return container_of(kset_get(&cls->subsys),
-				    struct class, subsys);
-	return NULL;
+		kset_get(&cls->p->class_subsys);
+	return cls;
 }
 
 static void class_put(struct class *cls)
 {
 	if (cls)
-		kset_put(&cls->subsys);
+		kset_put(&cls->p->class_subsys);
 }
 
 static int add_class_attrs(struct class *cls)
@@ -134,42 +135,57 @@
 	}
 }
 
-int class_register(struct class *cls)
+int __class_register(struct class *cls, struct lock_class_key *key)
 {
+	struct class_private *cp;
 	int error;
 
 	pr_debug("device class '%s': registering\n", cls->name);
 
-	INIT_LIST_HEAD(&cls->devices);
-	INIT_LIST_HEAD(&cls->interfaces);
-	kset_init(&cls->class_dirs);
-	init_MUTEX(&cls->sem);
-	error = kobject_set_name(&cls->subsys.kobj, "%s", cls->name);
-	if (error)
+	cp = kzalloc(sizeof(*cp), GFP_KERNEL);
+	if (!cp)
+		return -ENOMEM;
+	INIT_LIST_HEAD(&cp->class_devices);
+	INIT_LIST_HEAD(&cp->class_interfaces);
+	kset_init(&cp->class_dirs);
+	__mutex_init(&cp->class_mutex, "struct class mutex", key);
+	error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name);
+	if (error) {
+		kfree(cp);
 		return error;
+	}
+
+	/* set the default /sys/dev directory for devices of this class */
+	if (!cls->dev_kobj)
+		cls->dev_kobj = sysfs_dev_char_kobj;
 
 #if defined(CONFIG_SYSFS_DEPRECATED) && defined(CONFIG_BLOCK)
 	/* let the block class directory show up in the root of sysfs */
 	if (cls != &block_class)
-		cls->subsys.kobj.kset = class_kset;
+		cp->class_subsys.kobj.kset = class_kset;
 #else
-	cls->subsys.kobj.kset = class_kset;
+	cp->class_subsys.kobj.kset = class_kset;
 #endif
-	cls->subsys.kobj.ktype = &class_ktype;
+	cp->class_subsys.kobj.ktype = &class_ktype;
+	cp->class = cls;
+	cls->p = cp;
 
-	error = kset_register(&cls->subsys);
-	if (!error) {
-		error = add_class_attrs(class_get(cls));
-		class_put(cls);
+	error = kset_register(&cp->class_subsys);
+	if (error) {
+		kfree(cp);
+		return error;
 	}
+	error = add_class_attrs(class_get(cls));
+	class_put(cls);
 	return error;
 }
+EXPORT_SYMBOL_GPL(__class_register);
 
 void class_unregister(struct class *cls)
 {
 	pr_debug("device class '%s': unregistering\n", cls->name);
 	remove_class_attrs(cls);
-	kset_unregister(&cls->subsys);
+	kset_unregister(&cls->p->class_subsys);
 }
 
 static void class_create_release(struct class *cls)
@@ -189,7 +205,8 @@
  * Note, the pointer created here is to be destroyed when finished by
  * making a call to class_destroy().
  */
-struct class *class_create(struct module *owner, const char *name)
+struct class *__class_create(struct module *owner, const char *name,
+			     struct lock_class_key *key)
 {
 	struct class *cls;
 	int retval;
@@ -204,7 +221,7 @@
 	cls->owner = owner;
 	cls->class_release = class_create_release;
 
-	retval = class_register(cls);
+	retval = __class_register(cls, key);
 	if (retval)
 		goto error;
 
@@ -214,6 +231,7 @@
 	kfree(cls);
 	return ERR_PTR(retval);
 }
+EXPORT_SYMBOL_GPL(__class_create);
 
 /**
  * class_destroy - destroys a struct class structure
@@ -252,39 +270,44 @@
 /**
  * class_for_each_device - device iterator
  * @class: the class we're iterating
+ * @start: the device to start with in the list, if any.
  * @data: data for the callback
  * @fn: function to be called for each device
  *
  * Iterate over @class's list of devices, and call @fn for each,
- * passing it @data.
+ * passing it @data.  If @start is set, the list iteration will start
+ * there, otherwise if it is NULL, the iteration starts at the
+ * beginning of the list.
  *
  * We check the return of @fn each time. If it returns anything
  * other than 0, we break out and return that value.
  *
- * Note, we hold class->sem in this function, so it can not be
+ * Note, we hold class->class_mutex in this function, so it can not be
  * re-acquired in @fn, otherwise it will self-deadlocking. For
  * example, calls to add or remove class members would be verboten.
  */
-int class_for_each_device(struct class *class, void *data,
-			   int (*fn)(struct device *, void *))
+int class_for_each_device(struct class *class, struct device *start,
+			  void *data, int (*fn)(struct device *, void *))
 {
 	struct device *dev;
 	int error = 0;
 
 	if (!class)
 		return -EINVAL;
-	down(&class->sem);
-	list_for_each_entry(dev, &class->devices, node) {
+	mutex_lock(&class->p->class_mutex);
+	list_for_each_entry(dev, &class->p->class_devices, node) {
+		if (start) {
+			if (start == dev)
+				start = NULL;
+			continue;
+		}
 		dev = get_device(dev);
-		if (dev) {
-			error = fn(dev, data);
-			put_device(dev);
-		} else
-			error = -ENODEV;
+		error = fn(dev, data);
+		put_device(dev);
 		if (error)
 			break;
 	}
-	up(&class->sem);
+	mutex_unlock(&class->p->class_mutex);
 
 	return error;
 }
@@ -293,6 +316,7 @@
 /**
  * class_find_device - device iterator for locating a particular device
  * @class: the class we're iterating
+ * @start: Device to begin with
  * @data: data for the match function
  * @match: function to check device
  *
@@ -306,12 +330,13 @@
  *
  * Note, you will need to drop the reference with put_device() after use.
  *
- * We hold class->sem in this function, so it can not be
+ * We hold class->class_mutex in this function, so it can not be
  * re-acquired in @match, otherwise it will self-deadlocking. For
  * example, calls to add or remove class members would be verboten.
  */
-struct device *class_find_device(struct class *class, void *data,
-				   int (*match)(struct device *, void *))
+struct device *class_find_device(struct class *class, struct device *start,
+				 void *data,
+				 int (*match)(struct device *, void *))
 {
 	struct device *dev;
 	int found = 0;
@@ -319,19 +344,21 @@
 	if (!class)
 		return NULL;
 
-	down(&class->sem);
-	list_for_each_entry(dev, &class->devices, node) {
+	mutex_lock(&class->p->class_mutex);
+	list_for_each_entry(dev, &class->p->class_devices, node) {
+		if (start) {
+			if (start == dev)
+				start = NULL;
+			continue;
+		}
 		dev = get_device(dev);
-		if (dev) {
-			if (match(dev, data)) {
-				found = 1;
-				break;
-			} else
-				put_device(dev);
-		} else
+		if (match(dev, data)) {
+			found = 1;
 			break;
+		} else
+			put_device(dev);
 	}
-	up(&class->sem);
+	mutex_unlock(&class->p->class_mutex);
 
 	return found ? dev : NULL;
 }
@@ -349,13 +376,13 @@
 	if (!parent)
 		return -EINVAL;
 
-	down(&parent->sem);
-	list_add_tail(&class_intf->node, &parent->interfaces);
+	mutex_lock(&parent->p->class_mutex);
+	list_add_tail(&class_intf->node, &parent->p->class_interfaces);
 	if (class_intf->add_dev) {
-		list_for_each_entry(dev, &parent->devices, node)
+		list_for_each_entry(dev, &parent->p->class_devices, node)
 			class_intf->add_dev(dev, class_intf);
 	}
-	up(&parent->sem);
+	mutex_unlock(&parent->p->class_mutex);
 
 	return 0;
 }
@@ -368,13 +395,13 @@
 	if (!parent)
 		return;
 
-	down(&parent->sem);
+	mutex_lock(&parent->p->class_mutex);
 	list_del_init(&class_intf->node);
 	if (class_intf->remove_dev) {
-		list_for_each_entry(dev, &parent->devices, node)
+		list_for_each_entry(dev, &parent->p->class_devices, node)
 			class_intf->remove_dev(dev, class_intf);
 	}
-	up(&parent->sem);
+	mutex_unlock(&parent->p->class_mutex);
 
 	class_put(parent);
 }
@@ -389,9 +416,7 @@
 
 EXPORT_SYMBOL_GPL(class_create_file);
 EXPORT_SYMBOL_GPL(class_remove_file);
-EXPORT_SYMBOL_GPL(class_register);
 EXPORT_SYMBOL_GPL(class_unregister);
-EXPORT_SYMBOL_GPL(class_create);
 EXPORT_SYMBOL_GPL(class_destroy);
 
 EXPORT_SYMBOL_GPL(class_interface_register);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index ee0a51a..7d5c63c 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -21,12 +21,16 @@
 #include <linux/genhd.h>
 #include <linux/kallsyms.h>
 #include <linux/semaphore.h>
+#include <linux/mutex.h>
 
 #include "base.h"
 #include "power/power.h"
 
 int (*platform_notify)(struct device *dev) = NULL;
 int (*platform_notify_remove)(struct device *dev) = NULL;
+static struct kobject *dev_kobj;
+struct kobject *sysfs_dev_char_kobj;
+struct kobject *sysfs_dev_block_kobj;
 
 #ifdef CONFIG_BLOCK
 static inline int device_is_not_partition(struct device *dev)
@@ -548,7 +552,7 @@
 {
 	/* class devices without a parent live in /sys/class/<classname>/ */
 	if (dev->class && (!parent || parent->class != dev->class))
-		return &dev->class->subsys.kobj;
+		return &dev->class->p->class_subsys.kobj;
 	/* all other devices keep their parent */
 	else if (parent)
 		return &parent->kobj;
@@ -594,13 +598,13 @@
 			parent_kobj = &parent->kobj;
 
 		/* find our class-directory at the parent and reference it */
-		spin_lock(&dev->class->class_dirs.list_lock);
-		list_for_each_entry(k, &dev->class->class_dirs.list, entry)
+		spin_lock(&dev->class->p->class_dirs.list_lock);
+		list_for_each_entry(k, &dev->class->p->class_dirs.list, entry)
 			if (k->parent == parent_kobj) {
 				kobj = kobject_get(k);
 				break;
 			}
-		spin_unlock(&dev->class->class_dirs.list_lock);
+		spin_unlock(&dev->class->p->class_dirs.list_lock);
 		if (kobj)
 			return kobj;
 
@@ -608,7 +612,7 @@
 		k = kobject_create();
 		if (!k)
 			return NULL;
-		k->kset = &dev->class->class_dirs;
+		k->kset = &dev->class->p->class_dirs;
 		retval = kobject_add(k, parent_kobj, "%s", dev->class->name);
 		if (retval < 0) {
 			kobject_put(k);
@@ -627,7 +631,7 @@
 {
 	/* see if we live in a "glue" directory */
 	if (!glue_dir || !dev->class ||
-	    glue_dir->kset != &dev->class->class_dirs)
+	    glue_dir->kset != &dev->class->p->class_dirs)
 		return;
 
 	kobject_put(glue_dir);
@@ -654,17 +658,18 @@
 	if (!dev->class)
 		return 0;
 
-	error = sysfs_create_link(&dev->kobj, &dev->class->subsys.kobj,
+	error = sysfs_create_link(&dev->kobj,
+				  &dev->class->p->class_subsys.kobj,
 				  "subsystem");
 	if (error)
 		goto out;
 
 #ifdef CONFIG_SYSFS_DEPRECATED
 	/* stacked class devices need a symlink in the class directory */
-	if (dev->kobj.parent != &dev->class->subsys.kobj &&
+	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev)) {
-		error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
-					  dev->bus_id);
+		error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
+					  &dev->kobj, dev->bus_id);
 		if (error)
 			goto out_subsys;
 	}
@@ -701,13 +706,14 @@
 	if (dev->parent && device_is_not_partition(dev))
 		sysfs_remove_link(&dev->kobj, "device");
 out_busid:
-	if (dev->kobj.parent != &dev->class->subsys.kobj &&
+	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
-		sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
+		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+				  dev->bus_id);
 #else
 	/* link in the class directory pointing to the device */
-	error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
-				  dev->bus_id);
+	error = sysfs_create_link(&dev->class->p->class_subsys.kobj,
+				  &dev->kobj, dev->bus_id);
 	if (error)
 		goto out_subsys;
 
@@ -720,7 +726,7 @@
 	return 0;
 
 out_busid:
-	sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
+	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
 #endif
 
 out_subsys:
@@ -746,14 +752,15 @@
 		sysfs_remove_link(&dev->kobj, "device");
 	}
 
-	if (dev->kobj.parent != &dev->class->subsys.kobj &&
+	if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
 	    device_is_not_partition(dev))
-		sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
+		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+				  dev->bus_id);
 #else
 	if (dev->parent && device_is_not_partition(dev))
 		sysfs_remove_link(&dev->kobj, "device");
 
-	sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
+	sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev->bus_id);
 #endif
 
 	sysfs_remove_link(&dev->kobj, "subsystem");
@@ -776,6 +783,54 @@
 EXPORT_SYMBOL_GPL(dev_set_name);
 
 /**
+ * device_to_dev_kobj - select a /sys/dev/ directory for the device
+ * @dev: device
+ *
+ * By default we select char/ for new entries.  Setting class->dev_obj
+ * to NULL prevents an entry from being created.  class->dev_kobj must
+ * be set (or cleared) before any devices are registered to the class
+ * otherwise device_create_sys_dev_entry() and
+ * device_remove_sys_dev_entry() will disagree about the the presence
+ * of the link.
+ */
+static struct kobject *device_to_dev_kobj(struct device *dev)
+{
+	struct kobject *kobj;
+
+	if (dev->class)
+		kobj = dev->class->dev_kobj;
+	else
+		kobj = sysfs_dev_char_kobj;
+
+	return kobj;
+}
+
+static int device_create_sys_dev_entry(struct device *dev)
+{
+	struct kobject *kobj = device_to_dev_kobj(dev);
+	int error = 0;
+	char devt_str[15];
+
+	if (kobj) {
+		format_dev_t(devt_str, dev->devt);
+		error = sysfs_create_link(kobj, &dev->kobj, devt_str);
+	}
+
+	return error;
+}
+
+static void device_remove_sys_dev_entry(struct device *dev)
+{
+	struct kobject *kobj = device_to_dev_kobj(dev);
+	char devt_str[15];
+
+	if (kobj) {
+		format_dev_t(devt_str, dev->devt);
+		sysfs_remove_link(kobj, devt_str);
+	}
+}
+
+/**
  * device_add - add device to device hierarchy.
  * @dev: device.
  *
@@ -829,6 +884,10 @@
 		error = device_create_file(dev, &devt_attr);
 		if (error)
 			goto ueventattrError;
+
+		error = device_create_sys_dev_entry(dev);
+		if (error)
+			goto devtattrError;
 	}
 
 	error = device_add_class_symlinks(dev);
@@ -849,15 +908,16 @@
 		klist_add_tail(&dev->knode_parent, &parent->klist_children);
 
 	if (dev->class) {
-		down(&dev->class->sem);
+		mutex_lock(&dev->class->p->class_mutex);
 		/* tie the class to the device */
-		list_add_tail(&dev->node, &dev->class->devices);
+		list_add_tail(&dev->node, &dev->class->p->class_devices);
 
 		/* notify any interfaces that the device is here */
-		list_for_each_entry(class_intf, &dev->class->interfaces, node)
+		list_for_each_entry(class_intf,
+				    &dev->class->p->class_interfaces, node)
 			if (class_intf->add_dev)
 				class_intf->add_dev(dev, class_intf);
-		up(&dev->class->sem);
+		mutex_unlock(&dev->class->p->class_mutex);
 	}
  Done:
 	put_device(dev);
@@ -873,6 +933,9 @@
 	device_remove_class_symlinks(dev);
  SymlinkError:
 	if (MAJOR(dev->devt))
+		device_remove_sys_dev_entry(dev);
+ devtattrError:
+	if (MAJOR(dev->devt))
 		device_remove_file(dev, &devt_attr);
  ueventattrError:
 	device_remove_file(dev, &uevent_attr);
@@ -948,19 +1011,22 @@
 	device_pm_remove(dev);
 	if (parent)
 		klist_del(&dev->knode_parent);
-	if (MAJOR(dev->devt))
+	if (MAJOR(dev->devt)) {
+		device_remove_sys_dev_entry(dev);
 		device_remove_file(dev, &devt_attr);
+	}
 	if (dev->class) {
 		device_remove_class_symlinks(dev);
 
-		down(&dev->class->sem);
+		mutex_lock(&dev->class->p->class_mutex);
 		/* notify any interfaces that the device is now gone */
-		list_for_each_entry(class_intf, &dev->class->interfaces, node)
+		list_for_each_entry(class_intf,
+				    &dev->class->p->class_interfaces, node)
 			if (class_intf->remove_dev)
 				class_intf->remove_dev(dev, class_intf);
 		/* remove the device from the class list */
 		list_del_init(&dev->node);
-		up(&dev->class->sem);
+		mutex_unlock(&dev->class->p->class_mutex);
 	}
 	device_remove_file(dev, &uevent_attr);
 	device_remove_attrs(dev);
@@ -1074,7 +1140,25 @@
 	devices_kset = kset_create_and_add("devices", &device_uevent_ops, NULL);
 	if (!devices_kset)
 		return -ENOMEM;
+	dev_kobj = kobject_create_and_add("dev", NULL);
+	if (!dev_kobj)
+		goto dev_kobj_err;
+	sysfs_dev_block_kobj = kobject_create_and_add("block", dev_kobj);
+	if (!sysfs_dev_block_kobj)
+		goto block_kobj_err;
+	sysfs_dev_char_kobj = kobject_create_and_add("char", dev_kobj);
+	if (!sysfs_dev_char_kobj)
+		goto char_kobj_err;
+
 	return 0;
+
+ char_kobj_err:
+	kobject_put(sysfs_dev_block_kobj);
+ block_kobj_err:
+	kobject_put(dev_kobj);
+ dev_kobj_err:
+	kset_unregister(devices_kset);
+	return -ENOMEM;
 }
 
 EXPORT_SYMBOL_GPL(device_for_each_child);
@@ -1158,7 +1242,7 @@
 EXPORT_SYMBOL_GPL(device_create_vargs);
 
 /**
- * device_create_drvdata - creates a device and registers it with sysfs
+ * device_create - creates a device and registers it with sysfs
  * @class: pointer to the struct class that this device should be registered to
  * @parent: pointer to the parent struct device of this new device, if any
  * @devt: the dev_t for the char device to be added
@@ -1179,11 +1263,8 @@
  * Note: the struct class passed to this function must have previously
  * been created with a call to class_create().
  */
-struct device *device_create_drvdata(struct class *class,
-				     struct device *parent,
-				     dev_t devt,
-				     void *drvdata,
-				     const char *fmt, ...)
+struct device *device_create(struct class *class, struct device *parent,
+			     dev_t devt, void *drvdata, const char *fmt, ...)
 {
 	va_list vargs;
 	struct device *dev;
@@ -1193,40 +1274,6 @@
 	va_end(vargs);
 	return dev;
 }
-EXPORT_SYMBOL_GPL(device_create_drvdata);
-
-/**
- * device_create - creates a device and registers it with sysfs
- * @class: pointer to the struct class that this device should be registered to
- * @parent: pointer to the parent struct device of this new device, if any
- * @devt: the dev_t for the char device to be added
- * @fmt: string for the device's name
- *
- * This function can be used by char device classes.  A struct device
- * will be created in sysfs, registered to the specified class.
- *
- * A "dev" file will be created, showing the dev_t for the device, if
- * the dev_t is not 0,0.
- * If a pointer to a parent struct device is passed in, the newly created
- * struct device will be a child of that device in sysfs.
- * The pointer to the struct device will be returned from the call.
- * Any further sysfs files that might be required can be created using this
- * pointer.
- *
- * Note: the struct class passed to this function must have previously
- * been created with a call to class_create().
- */
-struct device *device_create(struct class *class, struct device *parent,
-			     dev_t devt, const char *fmt, ...)
-{
-	va_list vargs;
-	struct device *dev;
-
-	va_start(vargs, fmt);
-	dev = device_create_vargs(class, parent, devt, NULL, fmt, vargs);
-	va_end(vargs);
-	return dev;
-}
 EXPORT_SYMBOL_GPL(device_create);
 
 static int __match_devt(struct device *dev, void *data)
@@ -1248,7 +1295,7 @@
 {
 	struct device *dev;
 
-	dev = class_find_device(class, &devt, __match_devt);
+	dev = class_find_device(class, NULL, &devt, __match_devt);
 	if (dev) {
 		put_device(dev);
 		device_unregister(dev);
@@ -1298,8 +1345,9 @@
 	if (old_class_name) {
 		new_class_name = make_class_name(dev->class->name, &dev->kobj);
 		if (new_class_name) {
-			error = sysfs_create_link(&dev->parent->kobj,
-						  &dev->kobj, new_class_name);
+			error = sysfs_create_link_nowarn(&dev->parent->kobj,
+							 &dev->kobj,
+							 new_class_name);
 			if (error)
 				goto out;
 			sysfs_remove_link(&dev->parent->kobj, old_class_name);
@@ -1307,11 +1355,12 @@
 	}
 #else
 	if (dev->class) {
-		error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
-					  dev->bus_id);
+		error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj,
+						 &dev->kobj, dev->bus_id);
 		if (error)
 			goto out;
-		sysfs_remove_link(&dev->class->subsys.kobj, old_device_name);
+		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+				  old_device_name);
 	}
 #endif
 
@@ -1447,4 +1496,7 @@
 			dev->driver->shutdown(dev);
 		}
 	}
+	kobject_put(sysfs_dev_char_kobj);
+	kobject_put(sysfs_dev_block_kobj);
+	kobject_put(dev_kobj);
 }
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index e38dfed..20537d5 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -21,15 +21,16 @@
 static DEFINE_PER_CPU(struct sys_device *, cpu_sys_devices);
 
 #ifdef CONFIG_HOTPLUG_CPU
-static ssize_t show_online(struct sys_device *dev, char *buf)
+static ssize_t show_online(struct sys_device *dev, struct sysdev_attribute *attr,
+			   char *buf)
 {
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev);
 
 	return sprintf(buf, "%u\n", !!cpu_online(cpu->sysdev.id));
 }
 
-static ssize_t __ref store_online(struct sys_device *dev, const char *buf,
-			    size_t count)
+static ssize_t __ref store_online(struct sys_device *dev, struct sysdev_attribute *attr,
+				 const char *buf, size_t count)
 {
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev);
 	ssize_t ret;
@@ -80,7 +81,8 @@
 #ifdef CONFIG_KEXEC
 #include <linux/kexec.h>
 
-static ssize_t show_crash_notes(struct sys_device *dev, char *buf)
+static ssize_t show_crash_notes(struct sys_device *dev, struct sysdev_attribute *attr,
+				char *buf)
 {
 	struct cpu *cpu = container_of(dev, struct cpu, sysdev);
 	ssize_t rc;
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 937e825..4d4e0e7 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -92,7 +92,8 @@
  * uses.
  */
 
-static ssize_t show_mem_phys_index(struct sys_device *dev, char *buf)
+static ssize_t show_mem_phys_index(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct memory_block *mem =
 		container_of(dev, struct memory_block, sysdev);
@@ -102,7 +103,8 @@
 /*
  * online, offline, going offline, etc.
  */
-static ssize_t show_mem_state(struct sys_device *dev, char *buf)
+static ssize_t show_mem_state(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	struct memory_block *mem =
 		container_of(dev, struct memory_block, sysdev);
@@ -217,7 +219,8 @@
 }
 
 static ssize_t
-store_mem_state(struct sys_device *dev, const char *buf, size_t count)
+store_mem_state(struct sys_device *dev,
+		struct sysdev_attribute *attr, const char *buf, size_t count)
 {
 	struct memory_block *mem;
 	unsigned int phys_section_nr;
@@ -248,7 +251,8 @@
  * s.t. if I offline all of these sections I can then
  * remove the physical device?
  */
-static ssize_t show_phys_device(struct sys_device *dev, char *buf)
+static ssize_t show_phys_device(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	struct memory_block *mem =
 		container_of(dev, struct memory_block, sysdev);
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 0f867a0..5116b78 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -36,11 +36,13 @@
 	return len;
 }
 
-static inline ssize_t node_read_cpumask(struct sys_device *dev, char *buf)
+static inline ssize_t node_read_cpumask(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	return node_read_cpumap(dev, 0, buf);
 }
-static inline ssize_t node_read_cpulist(struct sys_device *dev, char *buf)
+static inline ssize_t node_read_cpulist(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	return node_read_cpumap(dev, 1, buf);
 }
@@ -49,7 +51,8 @@
 static SYSDEV_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL);
 
 #define K(x) ((x) << (PAGE_SHIFT - 10))
-static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
+static ssize_t node_read_meminfo(struct sys_device * dev,
+			struct sysdev_attribute *attr, char * buf)
 {
 	int n;
 	int nid = dev->id;
@@ -112,7 +115,8 @@
 #undef K
 static SYSDEV_ATTR(meminfo, S_IRUGO, node_read_meminfo, NULL);
 
-static ssize_t node_read_numastat(struct sys_device * dev, char * buf)
+static ssize_t node_read_numastat(struct sys_device * dev,
+				struct sysdev_attribute *attr, char * buf)
 {
 	return sprintf(buf,
 		       "numa_hit %lu\n"
@@ -130,7 +134,8 @@
 }
 static SYSDEV_ATTR(numastat, S_IRUGO, node_read_numastat, NULL);
 
-static ssize_t node_read_distance(struct sys_device * dev, char * buf)
+static ssize_t node_read_distance(struct sys_device * dev,
+			struct sysdev_attribute *attr, char * buf)
 {
 	int nid = dev->id;
 	int len = 0;
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 9b1b20b..2aa6e8f 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -194,7 +194,7 @@
 		struct device * dev = to_device(entry);
 		unsigned int hash = hash_string(DEVSEED, dev->bus_id, DEVHASH);
 		if (hash == value) {
-			printk("  hash matches device %s\n", dev->bus_id);
+			dev_info(dev, "hash matches\n");
 			match++;
 		}
 		entry = entry->prev;
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 358bb0b..40fc14f 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -36,7 +36,7 @@
 	struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr);
 
 	if (sysdev_attr->show)
-		return sysdev_attr->show(sysdev, buffer);
+		return sysdev_attr->show(sysdev, sysdev_attr, buffer);
 	return -EIO;
 }
 
@@ -49,7 +49,7 @@
 	struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr);
 
 	if (sysdev_attr->store)
-		return sysdev_attr->store(sysdev, buffer, count);
+		return sysdev_attr->store(sysdev, sysdev_attr, buffer, count);
 	return -EIO;
 }
 
@@ -130,8 +130,8 @@
 
 int sysdev_class_register(struct sysdev_class * cls)
 {
-	pr_debug("Registering sysdev class '%s'\n",
-		 kobject_name(&cls->kset.kobj));
+	pr_debug("Registering sysdev class '%s'\n", cls->name);
+
 	INIT_LIST_HEAD(&cls->drivers);
 	memset(&cls->kset.kobj, 0x00, sizeof(struct kobject));
 	cls->kset.kobj.parent = &system_kset->kobj;
@@ -241,7 +241,8 @@
 	if (!cls)
 		return -EINVAL;
 
-	pr_debug("Registering sys device '%s'\n", kobject_name(&sysdev->kobj));
+	pr_debug("Registering sys device of class '%s'\n",
+		 kobject_name(&cls->kset.kobj));
 
 	/* initialize the kobject to 0, in case it had previously been used */
 	memset(&sysdev->kobj, 0x00, sizeof(struct kobject));
@@ -257,6 +258,9 @@
 	if (!error) {
 		struct sysdev_driver * drv;
 
+		pr_debug("Registering sys device '%s'\n",
+			 kobject_name(&sysdev->kobj));
+
 		mutex_lock(&sysdev_drivers_lock);
 		/* Generic notification is implicit, because it's that
 		 * code that should have called us.
@@ -269,6 +273,7 @@
 		}
 		mutex_unlock(&sysdev_drivers_lock);
 	}
+
 	kobject_uevent(&sysdev->kobj, KOBJ_ADD);
 	return error;
 }
@@ -474,3 +479,52 @@
 
 EXPORT_SYMBOL_GPL(sysdev_register);
 EXPORT_SYMBOL_GPL(sysdev_unregister);
+
+#define to_ext_attr(x) container_of(x, struct sysdev_ext_attribute, attr)
+
+ssize_t sysdev_store_ulong(struct sys_device *sysdev,
+			   struct sysdev_attribute *attr,
+			   const char *buf, size_t size)
+{
+	struct sysdev_ext_attribute *ea = to_ext_attr(attr);
+	char *end;
+	unsigned long new = simple_strtoul(buf, &end, 0);
+	if (end == buf)
+		return -EINVAL;
+	*(unsigned long *)(ea->var) = new;
+	return end - buf;
+}
+EXPORT_SYMBOL_GPL(sysdev_store_ulong);
+
+ssize_t sysdev_show_ulong(struct sys_device *sysdev,
+			  struct sysdev_attribute *attr,
+			  char *buf)
+{
+	struct sysdev_ext_attribute *ea = to_ext_attr(attr);
+	return snprintf(buf, PAGE_SIZE, "%lx\n", *(unsigned long *)(ea->var));
+}
+EXPORT_SYMBOL_GPL(sysdev_show_ulong);
+
+ssize_t sysdev_store_int(struct sys_device *sysdev,
+			   struct sysdev_attribute *attr,
+			   const char *buf, size_t size)
+{
+	struct sysdev_ext_attribute *ea = to_ext_attr(attr);
+	char *end;
+	long new = simple_strtol(buf, &end, 0);
+	if (end == buf || new > INT_MAX || new < INT_MIN)
+		return -EINVAL;
+	*(int *)(ea->var) = new;
+	return end - buf;
+}
+EXPORT_SYMBOL_GPL(sysdev_store_int);
+
+ssize_t sysdev_show_int(struct sys_device *sysdev,
+			  struct sysdev_attribute *attr,
+			  char *buf)
+{
+	struct sysdev_ext_attribute *ea = to_ext_attr(attr);
+	return snprintf(buf, PAGE_SIZE, "%d\n", *(int *)(ea->var));
+}
+EXPORT_SYMBOL_GPL(sysdev_show_int);
+
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 3f6d9b0..199cd97 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -34,7 +34,8 @@
 static SYSDEV_ATTR(_name, 0444, show_##_name, NULL)
 
 #define define_id_show_func(name)				\
-static ssize_t show_##name(struct sys_device *dev, char *buf)	\
+static ssize_t show_##name(struct sys_device *dev,		\
+		struct sysdev_attribute *attr, char *buf)	\
 {								\
 	unsigned int cpu = dev->id;				\
 	return sprintf(buf, "%d\n", topology_##name(cpu));	\
@@ -59,14 +60,17 @@
 
 #ifdef arch_provides_topology_pointers
 #define define_siblings_show_map(name)					\
-static ssize_t show_##name(struct sys_device *dev, char *buf)	\
+static ssize_t show_##name(struct sys_device *dev,			\
+			   struct sysdev_attribute *attr, char *buf)	\
 {									\
 	unsigned int cpu = dev->id;					\
 	return show_cpumap(0, &(topology_##name(cpu)), buf);		\
 }
 
 #define define_siblings_show_list(name)					\
-static ssize_t show_##name##_list(struct sys_device *dev, char *buf) \
+static ssize_t show_##name##_list(struct sys_device *dev,		\
+				  struct sysdev_attribute *attr,	\
+				  char *buf)				\
 {									\
 	unsigned int cpu = dev->id;					\
 	return show_cpumap(1, &(topology_##name(cpu)), buf);		\
@@ -74,7 +78,8 @@
 
 #else
 #define define_siblings_show_map(name)					\
-static ssize_t show_##name(struct sys_device *dev, char *buf)	\
+static ssize_t show_##name(struct sys_device *dev,			\
+			   struct sysdev_attribute *attr, char *buf)	\
 {									\
 	unsigned int cpu = dev->id;					\
 	cpumask_t mask = topology_##name(cpu);				\
@@ -82,7 +87,9 @@
 }
 
 #define define_siblings_show_list(name)					\
-static ssize_t show_##name##_list(struct sys_device *dev, char *buf) \
+static ssize_t show_##name##_list(struct sys_device *dev,		\
+				  struct sysdev_attribute *attr,	\
+				  char *buf)				\
 {									\
 	unsigned int cpu = dev->id;					\
 	cpumask_t mask = topology_##name(cpu);				\
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index d1de68a..c04440c 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -277,8 +277,9 @@
 		return PTR_ERR(aoe_class);
 	}
 	for (i = 0; i < ARRAY_SIZE(chardevs); ++i)
-		device_create(aoe_class, NULL,
-			      MKDEV(AOE_MAJOR, chardevs[i].minor), chardevs[i].name);
+		device_create_drvdata(aoe_class, NULL,
+				      MKDEV(AOE_MAJOR, chardevs[i].minor),
+				      NULL, chardevs[i].name);
 
 	return 0;
 }
diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c
index 9d92636..d731ca4 100644
--- a/drivers/block/paride/pg.c
+++ b/drivers/block/paride/pg.c
@@ -686,8 +686,9 @@
 	for (unit = 0; unit < PG_UNITS; unit++) {
 		struct pg *dev = &devices[unit];
 		if (dev->present)
-			device_create(pg_class, NULL, MKDEV(major, unit),
-				      "pg%u", unit);
+			device_create_drvdata(pg_class, NULL,
+					      MKDEV(major, unit), NULL,
+					      "pg%u", unit);
 	}
 	err = 0;
 	goto out;
diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c
index 5c74c35..673b8b2 100644
--- a/drivers/block/paride/pt.c
+++ b/drivers/block/paride/pt.c
@@ -979,10 +979,12 @@
 
 	for (unit = 0; unit < PT_UNITS; unit++)
 		if (pt[unit].present) {
-			device_create(pt_class, NULL, MKDEV(major, unit),
-				      "pt%d", unit);
-			device_create(pt_class, NULL, MKDEV(major, unit + 128),
-				      "pt%dn", unit);
+			device_create_drvdata(pt_class, NULL,
+					      MKDEV(major, unit), NULL,
+					      "pt%d", unit);
+			device_create_drvdata(pt_class, NULL,
+					      MKDEV(major, unit + 128), NULL,
+					      "pt%dn", unit);
 		}
 	goto out;
 
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 45bee91..158eed4 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -303,7 +303,9 @@
 static void pkt_sysfs_dev_new(struct pktcdvd_device *pd)
 {
 	if (class_pktcdvd) {
-		pd->dev = device_create(class_pktcdvd, NULL, pd->pkt_dev, "%s", pd->name);
+		pd->dev = device_create_drvdata(class_pktcdvd, NULL,
+						pd->pkt_dev, NULL,
+						"%s", pd->name);
 		if (IS_ERR(pd->dev))
 			pd->dev = NULL;
 	}
diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c
index b9a30c3..33c466a 100644
--- a/drivers/char/dsp56k.c
+++ b/drivers/char/dsp56k.c
@@ -500,7 +500,8 @@
 		err = PTR_ERR(dsp56k_class);
 		goto out_chrdev;
 	}
-	device_create(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), "dsp56k");
+	device_create_drvdata(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0),
+			      NULL, "dsp56k");
 
 	printk(banner);
 	goto out;
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 5dc7440..9cb48fc 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -718,12 +718,12 @@
 			}
 
 			if ( NULL != ( pB = i2BoardPtrTable[i] ) ) {
-				device_create(ip2_class, NULL,
-						MKDEV(IP2_IPL_MAJOR, 4 * i),
-						"ipl%d", i);
-				device_create(ip2_class, NULL,
-						MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
-						"stat%d", i);
+				device_create_drvdata(ip2_class, NULL,
+						      MKDEV(IP2_IPL_MAJOR, 4 * i),
+						      NULL, "ipl%d", i);
+				device_create_drvdata(ip2_class, NULL,
+						      MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
+						      NULL, "stat%d", i);
 
 			    for ( box = 0; box < ABS_MAX_BOXES; ++box )
 			    {
diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c
index c11a404..64e1c16 100644
--- a/drivers/char/ipmi/ipmi_devintf.c
+++ b/drivers/char/ipmi/ipmi_devintf.c
@@ -871,7 +871,7 @@
 	entry->dev = dev;
 
 	mutex_lock(&reg_list_mutex);
-	device_create(ipmi_class, device, dev, "ipmi%d", if_num);
+	device_create_drvdata(ipmi_class, device, dev, NULL, "ipmi%d", if_num);
 	list_add(&entry->link, &reg_list);
 	mutex_unlock(&reg_list_mutex);
 }
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index f9ebcd4..843a2af 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -4599,8 +4599,9 @@
 
 	istallion_class = class_create(THIS_MODULE, "staliomem");
 	for (i = 0; i < 4; i++)
-		device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
-			      "staliomem%d", i);
+		device_create_drvdata(istallion_class, NULL,
+				      MKDEV(STL_SIOMEMMAJOR, i),
+				      NULL, "staliomem%d", i);
 
 	return 0;
 err_deinit:
diff --git a/drivers/char/lp.c b/drivers/char/lp.c
index 71abb4c..3f2719b 100644
--- a/drivers/char/lp.c
+++ b/drivers/char/lp.c
@@ -813,7 +813,8 @@
 	if (reset)
 		lp_reset(nr);
 
-	device_create(lp_class, port->dev, MKDEV(LP_MAJOR, nr), "lp%d", nr);
+	device_create_drvdata(lp_class, port->dev, MKDEV(LP_MAJOR, nr), NULL,
+			      "lp%d", nr);
 
 	printk(KERN_INFO "lp%d: using %s (%s).\n", nr, port->name, 
 	       (port->irq == PARPORT_IRQ_NONE)?"polling":"interrupt-driven");
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index b6772d6..c2dba82 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -989,9 +989,9 @@
 
 	mem_class = class_create(THIS_MODULE, "mem");
 	for (i = 0; i < ARRAY_SIZE(devlist); i++)
-		device_create(mem_class, NULL,
-			      MKDEV(MEM_MAJOR, devlist[i].minor),
-			      devlist[i].name);
+		device_create_drvdata(mem_class, NULL,
+				      MKDEV(MEM_MAJOR, devlist[i].minor),
+				      NULL, devlist[i].name);
 
 	return 0;
 }
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 6e1563c..999aa77 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -217,8 +217,8 @@
 		misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7);
 	dev = MKDEV(MISC_MAJOR, misc->minor);
 
-	misc->this_device = device_create(misc_class, misc->parent, dev,
-					  "%s", misc->name);
+	misc->this_device = device_create_drvdata(misc_class, misc->parent,
+						  dev, NULL, "%s", misc->name);
 	if (IS_ERR(misc->this_device)) {
 		err = PTR_ERR(misc->this_device);
 		goto out;
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index e4a4fbd..f070ae7 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -1896,7 +1896,7 @@
 		return ret;
 	}
 
-	device_create(cmm_class, NULL, MKDEV(major, i), "cmm%d", i);
+	device_create_drvdata(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
 
 	return 0;
 }
diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index 6181f8a..0b5934b 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -653,7 +653,8 @@
 		return ret;
 	}
 
-	device_create(cmx_class, NULL, MKDEV(major, i), "cmx%d", i);
+	device_create_drvdata(cmx_class, NULL, MKDEV(major, i), NULL,
+			      "cmx%d", i);
 
 	return 0;
 }
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c
index f6e6aca..7af7a7e 100644
--- a/drivers/char/ppdev.c
+++ b/drivers/char/ppdev.c
@@ -752,8 +752,9 @@
 
 static void pp_attach(struct parport *port)
 {
-	device_create(ppdev_class, port->dev, MKDEV(PP_MAJOR, port->number),
-			"parport%d", port->number);
+	device_create_drvdata(ppdev_class, port->dev,
+			      MKDEV(PP_MAJOR, port->number),
+			      NULL, "parport%d", port->number);
 }
 
 static void pp_detach(struct parport *port)
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 505fcbe..47b8cf2 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -131,8 +131,8 @@
 static void bind_device(struct raw_config_request *rq)
 {
 	device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
-	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
-		      "raw%d", rq->raw_minor);
+	device_create_drvdata(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor),
+			      NULL, "raw%d", rq->raw_minor);
 }
 
 /*
@@ -283,7 +283,8 @@
 		ret = PTR_ERR(raw_class);
 		goto error_region;
 	}
-	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), "rawctl");
+	device_create_drvdata(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL,
+			      "rawctl");
 
 	return 0;
 
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
index 0b799ac..3ce60df 100644
--- a/drivers/char/snsc.c
+++ b/drivers/char/snsc.c
@@ -444,7 +444,8 @@
 				continue;
 			}
 
-			device_create(snsc_class, NULL, dev, "%s", devname);
+			device_create_drvdata(snsc_class, NULL, dev, NULL,
+					      "%s", devname);
 
 			ia64_sn_irtr_intr_enable(scd->scd_nasid,
 						 0 /*ignored */ ,
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index de5a725..b976248 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -4755,8 +4755,8 @@
 	if (IS_ERR(stallion_class))
 		printk("STALLION: failed to create class\n");
 	for (i = 0; i < 4; i++)
-		device_create(stallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
-			      "staliomem%d", i);
+		device_create_drvdata(stallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
+				      NULL, "staliomem%d", i);
 
 	return 0;
 err_unrtty:
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index d94cd84..15e597d 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -3412,7 +3412,7 @@
 	else
 		tty_line_name(driver, index, name);
 
-	return device_create(tty_class, device, dev, name);
+	return device_create_drvdata(tty_class, device, dev, NULL, name);
 }
 
 /**
@@ -3690,20 +3690,22 @@
 	if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0)
 		panic("Couldn't register /dev/tty driver\n");
-	device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), "tty");
+	device_create_drvdata(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), NULL,
+			      "tty");
 
 	cdev_init(&console_cdev, &console_fops);
 	if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0)
 		panic("Couldn't register /dev/console driver\n");
-	device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), "console");
+	device_create_drvdata(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), NULL,
+			      "console");
 
 #ifdef CONFIG_UNIX98_PTYS
 	cdev_init(&ptmx_cdev, &ptmx_fops);
 	if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
 	    register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0)
 		panic("Couldn't register /dev/ptmx driver\n");
-	device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), "ptmx");
+	device_create_drvdata(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx");
 #endif
 
 #ifdef CONFIG_VT
@@ -3711,7 +3713,7 @@
 	if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) ||
 	    register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0)
 		panic("Couldn't register /dev/tty0 driver\n");
-	device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), "tty0");
+	device_create_drvdata(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0");
 
 	vty_init();
 #endif
diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c
index eebfad2..c2ae52d 100644
--- a/drivers/char/vc_screen.c
+++ b/drivers/char/vc_screen.c
@@ -481,10 +481,10 @@
 
 void vcs_make_sysfs(struct tty_struct *tty)
 {
-	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1),
-			"vcs%u", tty->index + 1);
-	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129),
-			"vcsa%u", tty->index + 1);
+	device_create_drvdata(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 1),
+			      NULL, "vcs%u", tty->index + 1);
+	device_create_drvdata(vc_class, NULL, MKDEV(VCS_MAJOR, tty->index + 129),
+			      NULL, "vcsa%u", tty->index + 1);
 }
 
 void vcs_remove_sysfs(struct tty_struct *tty)
@@ -499,7 +499,7 @@
 		panic("unable to get major %d for vcs device", VCS_MAJOR);
 	vc_class = class_create(THIS_MODULE, "vc");
 
-	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 0), "vcs");
-	device_create(vc_class, NULL, MKDEV(VCS_MAJOR, 128), "vcsa");
+	device_create_drvdata(vc_class, NULL, MKDEV(VCS_MAJOR, 0), NULL, "vcs");
+	device_create_drvdata(vc_class, NULL, MKDEV(VCS_MAJOR, 128), NULL, "vcsa");
 	return 0;
 }
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index e5da98d..7a70a40 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -886,10 +886,10 @@
 	state[i].cur_part = 0;
 	for (j = 0; j < MAX_PARTITIONS; ++j)
 		state[i].part_stat_rwi[j] = VIOT_IDLE;
-	device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i),
-			"iseries!vt%d", i);
-	device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80),
-			"iseries!nvt%d", i);
+	device_create_drvdata(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i),
+			      NULL, "iseries!vt%d", i);
+	device_create_drvdata(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80),
+			      NULL, "iseries!nvt%d", i);
 	printk(VIOTAPE_KERN_INFO "tape iseries/vt%d is iSeries "
 			"resource %10.10s type %4.4s, model %3.3s\n",
 			i, viotape_unitinfo[i].rsrcname,
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 935f1c2..e32a076 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -3425,9 +3425,10 @@
 	if (retval)
 		goto err;
 
-	con_driver->dev = device_create(vtconsole_class, NULL,
-					MKDEV(0, con_driver->node),
-					"vtcon%i", con_driver->node);
+	con_driver->dev = device_create_drvdata(vtconsole_class, NULL,
+						MKDEV(0, con_driver->node),
+						NULL, "vtcon%i",
+						con_driver->node);
 
 	if (IS_ERR(con_driver->dev)) {
 		printk(KERN_WARNING "Unable to create device for %s; "
@@ -3535,9 +3536,10 @@
 		struct con_driver *con = &registered_con_driver[i];
 
 		if (con->con && !con->dev) {
-			con->dev = device_create(vtconsole_class, NULL,
-						 MKDEV(0, con->node),
-						 "vtcon%i", con->node);
+			con->dev = device_create_drvdata(vtconsole_class, NULL,
+							 MKDEV(0, con->node),
+							 NULL, "vtcon%i",
+							 con->node);
 
 			if (IS_ERR(con->dev)) {
 				printk(KERN_WARNING "Unable to create "
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
index 1e1b81e..51966cc 100644
--- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c
+++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c
@@ -658,8 +658,9 @@
 		dev_err(dev, "cdev_add() failed\n");
 		goto failed3;
 	}
-	/*  devfs_mk_cdev(devt, S_IFCHR|S_IRUGO|S_IWUGO, DRIVER_NAME); */
-	device_create(icap_class, dev, devt, "%s%d", DRIVER_NAME, id);
+
+	device_create_drvdata(icap_class, dev, devt, NULL,
+			      "%s%d", DRIVER_NAME, id);
 	return 0;		/* success */
 
  failed3:
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index e949618..31a0e0b 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -21,7 +21,8 @@
 }
 __setup("cpuidle_sysfs_switch", cpuidle_sysfs_setup);
 
-static ssize_t show_available_governors(struct sys_device *dev, char *buf)
+static ssize_t show_available_governors(struct sys_device *dev,
+		struct sysdev_attribute *attr, char *buf)
 {
 	ssize_t i = 0;
 	struct cpuidle_governor *tmp;
@@ -39,7 +40,8 @@
 	return i;
 }
 
-static ssize_t show_current_driver(struct sys_device *dev, char *buf)
+static ssize_t show_current_driver(struct sys_device *dev,
+		struct sysdev_attribute *attr, char *buf)
 {
 	ssize_t ret;
 
@@ -53,7 +55,8 @@
 	return ret;
 }
 
-static ssize_t show_current_governor(struct sys_device *dev, char *buf)
+static ssize_t show_current_governor(struct sys_device *dev,
+			struct sysdev_attribute *attr, char *buf)
 {
 	ssize_t ret;
 
@@ -68,6 +71,7 @@
 }
 
 static ssize_t store_current_governor(struct sys_device *dev,
+	struct sysdev_attribute *attr,
 	const char *buf, size_t count)
 {
 	char gov_name[CPUIDLE_NAME_LEN];
diff --git a/drivers/dca/dca-sysfs.c b/drivers/dca/dca-sysfs.c
index 011328f..9a70377 100644
--- a/drivers/dca/dca-sysfs.c
+++ b/drivers/dca/dca-sysfs.c
@@ -14,8 +14,9 @@
 {
 	struct device *cd;
 
-	cd = device_create(dca_class, dca->cd, MKDEV(0, slot + 1),
-			   "requester%d", slot);
+	cd = device_create_drvdata(dca_class, dca->cd,
+				   MKDEV(0, slot + 1), NULL,
+				   "requester%d", slot);
 	if (IS_ERR(cd))
 		return PTR_ERR(cd);
 	return 0;
@@ -46,7 +47,8 @@
 		return err;
 	}
 
-	cd = device_create(dca_class, dev, MKDEV(0, 0), "dca%d", dca->id);
+	cd = device_create_drvdata(dca_class, dev, MKDEV(0, 0), NULL,
+				   "dca%d", dca->id);
 	if (IS_ERR(cd)) {
 		spin_lock(&dca_idr_lock);
 		idr_remove(&dca_idr, dca->id);
diff --git a/drivers/eisa/Makefile b/drivers/eisa/Makefile
index 70abf93f..5369ce9 100644
--- a/drivers/eisa/Makefile
+++ b/drivers/eisa/Makefile
@@ -9,7 +9,7 @@
 
 
 # Ugly hack to get DEVICE_NAME_SIZE value...
-DEVICE_NAME_SIZE =$(shell awk '$$1=="\#define" && $$2=="DEVICE_NAME_SIZE" {print $$3-1}' $(srctree)/include/linux/device.h)
+DEVICE_NAME_SIZE = 50
 
 $(obj)/eisa-bus.o: $(obj)/devlist.h
 
diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c
index 65dcf04..c950bf8 100644
--- a/drivers/eisa/eisa-bus.c
+++ b/drivers/eisa/eisa-bus.c
@@ -22,7 +22,7 @@
 
 struct eisa_device_info {
 	struct eisa_device_id id;
-	char name[DEVICE_NAME_SIZE];
+	char name[50];
 };
 
 #ifdef CONFIG_EISA_NAMES
@@ -63,7 +63,7 @@
 		if (!strcmp (edev->id.sig, eisa_table[i].id.sig)) {
 			strlcpy (edev->pretty_name,
 				 eisa_table[i].name,
-				 DEVICE_NAME_SIZE);
+				 sizeof(edev->pretty_name));
 			return;
 		}
 	}
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 2fde6c6..0c6b4d4 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -322,8 +322,9 @@
 		goto out;
 	}
 
-	dev->dev = device_create(hidraw_class, NULL, MKDEV(hidraw_major, minor),
-				"%s%d", "hidraw", minor);
+	dev->dev = device_create_drvdata(hidraw_class, NULL,
+					 MKDEV(hidraw_major, minor), NULL,
+					 "%s%d", "hidraw", minor);
 
 	if (IS_ERR(dev->dev)) {
 		spin_lock(&minors_lock);
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 3db2845..7321a88 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -55,7 +55,8 @@
 		return ERR_PTR(err);
 
 	id = id & MAX_ID_MASK;
-	hwdev = device_create(hwmon_class, dev, MKDEV(0,0), HWMON_ID_FORMAT, id);
+	hwdev = device_create_drvdata(hwmon_class, dev, MKDEV(0, 0), NULL,
+				      HWMON_ID_FORMAT, id);
 
 	if (IS_ERR(hwdev)) {
 		spin_lock(&idr_lock);
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 7608df8..7bf38c4 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -722,7 +722,8 @@
 
 	INIT_LIST_HEAD(&driver->clients);
 	/* Walk the adapters that are already present */
-	class_for_each_device(&i2c_adapter_class, driver, __attach_adapter);
+	class_for_each_device(&i2c_adapter_class, NULL, driver,
+			      __attach_adapter);
 
 	mutex_unlock(&core_lock);
 	return 0;
@@ -782,7 +783,8 @@
 {
 	mutex_lock(&core_lock);
 
-	class_for_each_device(&i2c_adapter_class, driver, __detach_adapter);
+	class_for_each_device(&i2c_adapter_class, NULL, driver,
+			      __detach_adapter);
 
 	driver_unregister(&driver->driver);
 	pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name);
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 86727fa..9d55c63 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -521,9 +521,9 @@
 		return PTR_ERR(i2c_dev);
 
 	/* register this i2c device with the driver core */
-	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,
-				     MKDEV(I2C_MAJOR, adap->nr),
-				     "i2c-%d", adap->nr);
+	i2c_dev->dev = device_create_drvdata(i2c_dev_class, &adap->dev,
+					     MKDEV(I2C_MAJOR, adap->nr),
+					     NULL, "i2c-%d", adap->nr);
 	if (IS_ERR(i2c_dev->dev)) {
 		res = PTR_ERR(i2c_dev->dev);
 		goto error;
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index b711ab9..353dd11 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -2697,10 +2697,12 @@
 
 	idetape_setup(drive, tape, minor);
 
-	device_create(idetape_sysfs_class, &drive->gendev,
-		      MKDEV(IDETAPE_MAJOR, minor), "%s", tape->name);
-	device_create(idetape_sysfs_class, &drive->gendev,
-			MKDEV(IDETAPE_MAJOR, minor + 128), "n%s", tape->name);
+	device_create_drvdata(idetape_sysfs_class, &drive->gendev,
+			      MKDEV(IDETAPE_MAJOR, minor), NULL,
+			      "%s", tape->name);
+	device_create_drvdata(idetape_sysfs_class, &drive->gendev,
+			      MKDEV(IDETAPE_MAJOR, minor + 128), NULL,
+			      "n%s", tape->name);
 
 	g->fops = &idetape_block_ops;
 	ide_register_region(g);
diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c
index 9d19aec..b6eb2cf 100644
--- a/drivers/ieee1394/dv1394.c
+++ b/drivers/ieee1394/dv1394.c
@@ -2296,9 +2296,10 @@
 
 	ohci = (struct ti_ohci *)host->hostdata;
 
-	device_create(hpsb_protocol_class, NULL, MKDEV(
-		IEEE1394_MAJOR,	IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id<<2)),
-		"dv1394-%d", id);
+	device_create_drvdata(hpsb_protocol_class, NULL,
+			      MKDEV(IEEE1394_MAJOR,
+				    IEEE1394_MINOR_BLOCK_DV1394 * 16 + (id<<2)), NULL,
+			      "dv1394-%d", id);
 
 	dv1394_init(ohci, DV1394_NTSC, MODE_RECEIVE);
 	dv1394_init(ohci, DV1394_NTSC, MODE_TRANSMIT);
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index 05710c7..994a21e 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -754,7 +754,8 @@
 	 */
 	mutex_lock(&nodemgr_serialize_remove_uds);
 	for (;;) {
-		dev = class_find_device(&nodemgr_ud_class, ne, __match_ne);
+		dev = class_find_device(&nodemgr_ud_class, NULL, ne,
+					__match_ne);
 		if (!dev)
 			break;
 		ud = container_of(dev, struct unit_directory, unit_dev);
@@ -901,7 +902,8 @@
 	struct device *dev;
 	struct node_entry *ne;
 
-	dev = class_find_device(&nodemgr_ne_class, &guid, __match_ne_guid);
+	dev = class_find_device(&nodemgr_ne_class, NULL, &guid,
+				__match_ne_guid);
 	if (!dev)
 		return NULL;
 	ne = container_of(dev, struct node_entry, node_dev);
@@ -940,7 +942,8 @@
 	param.host = host;
 	param.nodeid = nodeid;
 
-	dev = class_find_device(&nodemgr_ne_class, &param, __match_ne_nodeid);
+	dev = class_find_device(&nodemgr_ne_class, NULL, &param,
+				__match_ne_nodeid);
 	if (!dev)
 		return NULL;
 	ne = container_of(dev, struct node_entry, node_dev);
@@ -1453,7 +1456,8 @@
 	ne->in_limbo = 1;
 	WARN_ON(device_create_file(&ne->device, &dev_attr_ne_in_limbo));
 
-	class_for_each_device(&nodemgr_ud_class, ne, __nodemgr_driver_suspend);
+	class_for_each_device(&nodemgr_ud_class, NULL, ne,
+			      __nodemgr_driver_suspend);
 }
 
 
@@ -1462,7 +1466,8 @@
 	ne->in_limbo = 0;
 	device_remove_file(&ne->device, &dev_attr_ne_in_limbo);
 
-	class_for_each_device(&nodemgr_ud_class, ne, __nodemgr_driver_resume);
+	class_for_each_device(&nodemgr_ud_class, NULL, ne,
+			      __nodemgr_driver_resume);
 	HPSB_DEBUG("Node resumed: ID:BUS[" NODE_BUS_FMT "]  GUID[%016Lx]",
 		   NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
 }
@@ -1498,7 +1503,8 @@
 
 static void nodemgr_update_pdrv(struct node_entry *ne)
 {
-	class_for_each_device(&nodemgr_ud_class, ne, __nodemgr_update_pdrv);
+	class_for_each_device(&nodemgr_ud_class, NULL, ne,
+			      __nodemgr_update_pdrv);
 }
 
 
@@ -1591,7 +1597,8 @@
 	 * while probes are time-consuming. (Well, those probes need some
 	 * improvement...) */
 
-	class_for_each_device(&nodemgr_ne_class, &param, __nodemgr_node_probe);
+	class_for_each_device(&nodemgr_ne_class, NULL, &param,
+			      __nodemgr_node_probe);
 
 	/* If we had a bus reset while we were scanning the bus, it is
 	 * possible that we did not probe all nodes.  In that case, we
@@ -1826,7 +1833,7 @@
 
 	hip.cb = cb;
 	hip.data = data;
-	error = class_for_each_device(&hpsb_host_class, &hip,
+	error = class_for_each_device(&hpsb_host_class, NULL, &hip,
 				      __nodemgr_for_each_host);
 
 	return error;
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index 96f2847..6fa9e4a 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -3010,10 +3010,10 @@
 	hpsb_register_highlevel(&raw1394_highlevel);
 
 	if (IS_ERR
-	    (device_create(
+	    (device_create_drvdata(
 	      hpsb_protocol_class, NULL,
 	      MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16),
-	      RAW1394_DEVICE_NAME))) {
+	      NULL, RAW1394_DEVICE_NAME))) {
 		ret = -EFAULT;
 		goto out_unreg;
 	}
diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index 069b9f6..25db6e6 100644
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -1341,9 +1341,9 @@
 	hpsb_set_hostinfo_key(&video1394_highlevel, host, ohci->host->id);
 
 	minor = IEEE1394_MINOR_BLOCK_VIDEO1394 * 16 + ohci->host->id;
-	device_create(hpsb_protocol_class, NULL,
-		      MKDEV(IEEE1394_MAJOR, minor),
-		      "%s-%d", VIDEO1394_DRIVER_NAME, ohci->host->id);
+	device_create_drvdata(hpsb_protocol_class, NULL,
+			      MKDEV(IEEE1394_MAJOR, minor), NULL,
+			      "%s-%d", VIDEO1394_DRIVER_NAME, ohci->host->id);
 }
 
 
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 55738ee..922d35f 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -44,6 +44,7 @@
 #include <linux/spinlock.h>
 #include <linux/sysfs.h>
 #include <linux/workqueue.h>
+#include <linux/kdev_t.h>
 
 #include <rdma/ib_cache.h>
 #include <rdma/ib_cm.h>
@@ -162,8 +163,8 @@
 
 struct cm_device {
 	struct list_head list;
-	struct ib_device *device;
-	struct kobject dev_obj;
+	struct ib_device *ib_device;
+	struct device *device;
 	u8 ack_delay;
 	struct cm_port *port[0];
 };
@@ -339,7 +340,7 @@
 {
 	av->port = port;
 	av->pkey_index = wc->pkey_index;
-	ib_init_ah_from_wc(port->cm_dev->device, port->port_num, wc,
+	ib_init_ah_from_wc(port->cm_dev->ib_device, port->port_num, wc,
 			   grh, &av->ah_attr);
 }
 
@@ -353,7 +354,7 @@
 
 	read_lock_irqsave(&cm.device_lock, flags);
 	list_for_each_entry(cm_dev, &cm.device_list, list) {
-		if (!ib_find_cached_gid(cm_dev->device, &path->sgid,
+		if (!ib_find_cached_gid(cm_dev->ib_device, &path->sgid,
 					&p, NULL)) {
 			port = cm_dev->port[p-1];
 			break;
@@ -364,13 +365,13 @@
 	if (!port)
 		return -EINVAL;
 
-	ret = ib_find_cached_pkey(cm_dev->device, port->port_num,
+	ret = ib_find_cached_pkey(cm_dev->ib_device, port->port_num,
 				  be16_to_cpu(path->pkey), &av->pkey_index);
 	if (ret)
 		return ret;
 
 	av->port = port;
-	ib_init_ah_from_path(cm_dev->device, port->port_num, path,
+	ib_init_ah_from_path(cm_dev->ib_device, port->port_num, path,
 			     &av->ah_attr);
 	av->timeout = path->packet_life_time + 1;
 	return 0;
@@ -1515,7 +1516,7 @@
 
 	req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad;
 
-	cm_id = ib_create_cm_id(work->port->cm_dev->device, NULL, NULL);
+	cm_id = ib_create_cm_id(work->port->cm_dev->ib_device, NULL, NULL);
 	if (IS_ERR(cm_id))
 		return PTR_ERR(cm_id);
 
@@ -1550,7 +1551,7 @@
 	cm_format_paths_from_req(req_msg, &work->path[0], &work->path[1]);
 	ret = cm_init_av_by_path(&work->path[0], &cm_id_priv->av);
 	if (ret) {
-		ib_get_cached_gid(work->port->cm_dev->device,
+		ib_get_cached_gid(work->port->cm_dev->ib_device,
 				  work->port->port_num, 0, &work->path[0].sgid);
 		ib_send_cm_rej(cm_id, IB_CM_REJ_INVALID_GID,
 			       &work->path[0].sgid, sizeof work->path[0].sgid,
@@ -2950,7 +2951,7 @@
 	struct cm_sidr_req_msg *sidr_req_msg;
 	struct ib_wc *wc;
 
-	cm_id = ib_create_cm_id(work->port->cm_dev->device, NULL, NULL);
+	cm_id = ib_create_cm_id(work->port->cm_dev->ib_device, NULL, NULL);
 	if (IS_ERR(cm_id))
 		return PTR_ERR(cm_id);
 	cm_id_priv = container_of(cm_id, struct cm_id_private, id);
@@ -3578,7 +3579,7 @@
 {
 	struct ib_device_attr attr;
 
-	if (ib_query_device(cm_dev->device, &attr))
+	if (ib_query_device(cm_dev->ib_device, &attr))
 		cm_dev->ack_delay = 0; /* acks will rely on packet life time */
 	else
 		cm_dev->ack_delay = attr.local_ca_ack_delay;
@@ -3618,18 +3619,6 @@
 	.release = cm_release_port_obj
 };
 
-static void cm_release_dev_obj(struct kobject *obj)
-{
-	struct cm_device *cm_dev;
-
-	cm_dev = container_of(obj, struct cm_device, dev_obj);
-	kfree(cm_dev);
-}
-
-static struct kobj_type cm_dev_obj_type = {
-	.release = cm_release_dev_obj
-};
-
 struct class cm_class = {
 	.name    = "infiniband_cm",
 };
@@ -3640,7 +3629,7 @@
 	int i, ret;
 
 	ret = kobject_init_and_add(&port->port_obj, &cm_port_obj_type,
-				   &port->cm_dev->dev_obj,
+				   &port->cm_dev->device->kobj,
 				   "%d", port->port_num);
 	if (ret) {
 		kfree(port);
@@ -3676,7 +3665,7 @@
 	kobject_put(&port->port_obj);
 }
 
-static void cm_add_one(struct ib_device *device)
+static void cm_add_one(struct ib_device *ib_device)
 {
 	struct cm_device *cm_dev;
 	struct cm_port *port;
@@ -3691,26 +3680,27 @@
 	int ret;
 	u8 i;
 
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+	if (rdma_node_get_transport(ib_device->node_type) != RDMA_TRANSPORT_IB)
 		return;
 
 	cm_dev = kzalloc(sizeof(*cm_dev) + sizeof(*port) *
-			 device->phys_port_cnt, GFP_KERNEL);
+			 ib_device->phys_port_cnt, GFP_KERNEL);
 	if (!cm_dev)
 		return;
 
-	cm_dev->device = device;
+	cm_dev->ib_device = ib_device;
 	cm_get_ack_delay(cm_dev);
 
-	ret = kobject_init_and_add(&cm_dev->dev_obj, &cm_dev_obj_type,
-				   &cm_class.subsys.kobj, "%s", device->name);
-	if (ret) {
+	cm_dev->device = device_create_drvdata(&cm_class, &ib_device->dev,
+					       MKDEV(0, 0), NULL,
+					       "%s", ib_device->name);
+	if (!cm_dev->device) {
 		kfree(cm_dev);
 		return;
 	}
 
 	set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
-	for (i = 1; i <= device->phys_port_cnt; i++) {
+	for (i = 1; i <= ib_device->phys_port_cnt; i++) {
 		port = kzalloc(sizeof *port, GFP_KERNEL);
 		if (!port)
 			goto error1;
@@ -3723,7 +3713,7 @@
 		if (ret)
 			goto error1;
 
-		port->mad_agent = ib_register_mad_agent(device, i,
+		port->mad_agent = ib_register_mad_agent(ib_device, i,
 							IB_QPT_GSI,
 							&reg_req,
 							0,
@@ -3733,11 +3723,11 @@
 		if (IS_ERR(port->mad_agent))
 			goto error2;
 
-		ret = ib_modify_port(device, i, 0, &port_modify);
+		ret = ib_modify_port(ib_device, i, 0, &port_modify);
 		if (ret)
 			goto error3;
 	}
-	ib_set_client_data(device, &cm_client, cm_dev);
+	ib_set_client_data(ib_device, &cm_client, cm_dev);
 
 	write_lock_irqsave(&cm.device_lock, flags);
 	list_add_tail(&cm_dev->list, &cm.device_list);
@@ -3753,14 +3743,14 @@
 	port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
 	while (--i) {
 		port = cm_dev->port[i-1];
-		ib_modify_port(device, port->port_num, 0, &port_modify);
+		ib_modify_port(ib_device, port->port_num, 0, &port_modify);
 		ib_unregister_mad_agent(port->mad_agent);
 		cm_remove_port_fs(port);
 	}
-	kobject_put(&cm_dev->dev_obj);
+	device_unregister(cm_dev->device);
 }
 
-static void cm_remove_one(struct ib_device *device)
+static void cm_remove_one(struct ib_device *ib_device)
 {
 	struct cm_device *cm_dev;
 	struct cm_port *port;
@@ -3770,7 +3760,7 @@
 	unsigned long flags;
 	int i;
 
-	cm_dev = ib_get_client_data(device, &cm_client);
+	cm_dev = ib_get_client_data(ib_device, &cm_client);
 	if (!cm_dev)
 		return;
 
@@ -3778,14 +3768,14 @@
 	list_del(&cm_dev->list);
 	write_unlock_irqrestore(&cm.device_lock, flags);
 
-	for (i = 1; i <= device->phys_port_cnt; i++) {
+	for (i = 1; i <= ib_device->phys_port_cnt; i++) {
 		port = cm_dev->port[i-1];
-		ib_modify_port(device, port->port_num, 0, &port_modify);
+		ib_modify_port(ib_device, port->port_num, 0, &port_modify);
 		ib_unregister_mad_agent(port->mad_agent);
 		flush_workqueue(cm.wq);
 		cm_remove_port_fs(port);
 	}
-	kobject_put(&cm_dev->dev_obj);
+	device_unregister(cm_dev->device);
 }
 
 static int __init ib_cm_init(void)
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 35f301c..56c0eda 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -2455,7 +2455,7 @@
 		goto err_cdev;
 	}
 
-	device = device_create(ipath_class, NULL, dev, name);
+	device = device_create_drvdata(ipath_class, NULL, dev, NULL, name);
 
 	if (IS_ERR(device)) {
 		ret = PTR_ERR(device);
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 19e005e..871b0cbc 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1553,7 +1553,8 @@
 		return PTR_ERR(capi_class);
 	}
 
-	device_create(capi_class, NULL, MKDEV(capi_major, 0), "capi");
+	device_create_drvdata(capi_class, NULL, MKDEV(capi_major, 0), NULL,
+			      "capi");
 
 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 	if (capinc_tty_init() < 0) {
diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index e5d4468..cae5248 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -862,7 +862,8 @@
 	adb_dev_class = class_create(THIS_MODULE, "adb");
 	if (IS_ERR(adb_dev_class))
 		return;
-	device_create(adb_dev_class, NULL, MKDEV(ADB_MAJOR, 0), "adb");
+	device_create_drvdata(adb_dev_class, NULL, MKDEV(ADB_MAJOR, 0), NULL,
+			      "adb");
 
 	platform_device_register(&adb_pfdev);
 	platform_driver_probe(&adb_pfdrv, adb_dummy_probe);
diff --git a/drivers/mca/mca-bus.c b/drivers/mca/mca-bus.c
index 67b8e94..ef2dbfe 100644
--- a/drivers/mca/mca-bus.c
+++ b/drivers/mca/mca-bus.c
@@ -40,7 +40,7 @@
 
 struct mca_device_info {
 	short pos_id;		/* the 2 byte pos id for this card */
-	char name[DEVICE_NAME_SIZE];
+	char name[50];
 };
 
 static int mca_bus_match (struct device *dev, struct device_driver *drv)
diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index e208a60..e713277 100644
--- a/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/drivers/media/dvb/dvb-core/dvbdev.c
@@ -233,9 +233,9 @@
 
 	mutex_unlock(&dvbdev_register_lock);
 
-	clsdev = device_create(dvb_class, adap->device,
+	clsdev = device_create_drvdata(dvb_class, adap->device,
 			       MKDEV(DVB_MAJOR, nums2minor(adap->num, type, id)),
-			       "dvb%d.%s%d", adap->num, dnames[type], id);
+			       NULL, "dvb%d.%s%d", adap->num, dnames[type], id);
 	if (IS_ERR(clsdev)) {
 		printk(KERN_ERR "%s: failed to create device dvb%d.%s%d (%ld)\n",
 		       __func__, adap->num, dnames[type], id, PTR_ERR(clsdev));
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index a054668..4e3bfbc 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -51,7 +51,7 @@
 	void __iomem            *addr;
 	spinlock_t              lock;
 	int                     id;
-	char                    host_id[DEVICE_ID_SIZE];
+	char                    host_id[32];
 	int                     irq;
 	unsigned int            block_pos;
 	unsigned long           timeout_jiffies;
@@ -781,7 +781,7 @@
 
 	spin_lock_init(&host->lock);
 	host->id = cnt;
-	snprintf(host->host_id, DEVICE_ID_SIZE, DRIVER_NAME ":slot%d",
+	snprintf(host->host_id, sizeof(host->host_id), DRIVER_NAME ":slot%d",
 		 host->id);
 	host->irq = jm->pdev->irq;
 	host->timeout_jiffies = msecs_to_jiffies(1000);
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 75e599b..34402c4 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -1670,7 +1670,8 @@
 	INIT_DELAYED_WORK(&ioc->fault_reset_work, mpt_fault_reset_work);
 	spin_lock_init(&ioc->fault_reset_work_lock);
 
-	snprintf(ioc->reset_work_q_name, KOBJ_NAME_LEN, "mpt_poll_%d", ioc->id);
+	snprintf(ioc->reset_work_q_name, sizeof(ioc->reset_work_q_name),
+		 "mpt_poll_%d", ioc->id);
 	ioc->reset_work_q =
 		create_singlethread_workqueue(ioc->reset_work_q_name);
 	if (!ioc->reset_work_q) {
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 6adab64..dff048c 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -707,12 +707,12 @@
 	u8			 fc_link_speed[2];
 	spinlock_t		 fc_rescan_work_lock;
 	struct work_struct	 fc_rescan_work;
-	char			 fc_rescan_work_q_name[KOBJ_NAME_LEN];
+	char			 fc_rescan_work_q_name[20];
 	struct workqueue_struct *fc_rescan_work_q;
 	struct scsi_cmnd	**ScsiLookup;
 	spinlock_t		  scsi_lookup_lock;
 
-	char			 reset_work_q_name[KOBJ_NAME_LEN];
+	char			 reset_work_q_name[20];
 	struct workqueue_struct *reset_work_q;
 	struct delayed_work	 fault_reset_work;
 	spinlock_t		 fault_reset_work_lock;
diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c
index fc31ca6..b36cae9 100644
--- a/drivers/message/fusion/mptfc.c
+++ b/drivers/message/fusion/mptfc.c
@@ -1326,8 +1326,8 @@
 
 	/* initialize workqueue */
 
-	snprintf(ioc->fc_rescan_work_q_name, KOBJ_NAME_LEN, "mptfc_wq_%d",
-		sh->host_no);
+	snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
+		 "mptfc_wq_%d", sh->host_no);
 	ioc->fc_rescan_work_q =
 		create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
 	if (!ioc->fc_rescan_work_q)
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 1921b8d..ce67d97 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -420,4 +420,17 @@
 	  this feature will allow for direct communication between SSIs
 	  based on a network adapter and DMA messaging.
 
+config HP_ILO
+	tristate "Channel interface driver for HP iLO/iLO2 processor"
+	default n
+	help
+	  The channel interface driver allows applications to communicate
+	  with iLO/iLO2 management processors present on HP ProLiant
+	  servers.  Upon loading, the driver creates /dev/hpilo/dXccbN files,
+	  which can be used to gather data from the management processor,
+	  via read and write system calls.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hpilo.
+
 endif # MISC_DEVICES
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index a6dac6a..688fe76 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -27,3 +27,4 @@
 obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
 obj-$(CONFIG_KGDB_TESTS)	+= kgdbts.o
 obj-$(CONFIG_SGI_XP)		+= sgi-xp/
+obj-$(CONFIG_HP_ILO)		+= hpilo.o
diff --git a/drivers/misc/hpilo.c b/drivers/misc/hpilo.c
new file mode 100644
index 0000000..05e2982
--- /dev/null
+++ b/drivers/misc/hpilo.c
@@ -0,0 +1,768 @@
+/*
+ * Driver for HP iLO/iLO2 management processor.
+ *
+ * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
+ *	David Altobelli <david.altobelli@hp.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/kernel.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/file.h>
+#include <linux/cdev.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
+#include "hpilo.h"
+
+static struct class *ilo_class;
+static unsigned int ilo_major;
+static char ilo_hwdev[MAX_ILO_DEV];
+
+static inline int get_entry_id(int entry)
+{
+	return (entry & ENTRY_MASK_DESCRIPTOR) >> ENTRY_BITPOS_DESCRIPTOR;
+}
+
+static inline int get_entry_len(int entry)
+{
+	return ((entry & ENTRY_MASK_QWORDS) >> ENTRY_BITPOS_QWORDS) << 3;
+}
+
+static inline int mk_entry(int id, int len)
+{
+	int qlen = len & 7 ? (len >> 3) + 1 : len >> 3;
+	return id << ENTRY_BITPOS_DESCRIPTOR | qlen << ENTRY_BITPOS_QWORDS;
+}
+
+static inline int desc_mem_sz(int nr_entry)
+{
+	return nr_entry << L2_QENTRY_SZ;
+}
+
+/*
+ * FIFO queues, shared with hardware.
+ *
+ * If a queue has empty slots, an entry is added to the queue tail,
+ * and that entry is marked as occupied.
+ * Entries can be dequeued from the head of the list, when the device
+ * has marked the entry as consumed.
+ *
+ * Returns true on successful queue/dequeue, false on failure.
+ */
+static int fifo_enqueue(struct ilo_hwinfo *hw, char *fifobar, int entry)
+{
+	struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
+	int ret = 0;
+
+	spin_lock(&hw->fifo_lock);
+	if (!(fifo_q->fifobar[(fifo_q->tail + 1) & fifo_q->imask]
+	      & ENTRY_MASK_O)) {
+		fifo_q->fifobar[fifo_q->tail & fifo_q->imask] |=
+				(entry & ENTRY_MASK_NOSTATE) | fifo_q->merge;
+		fifo_q->tail += 1;
+		ret = 1;
+	}
+	spin_unlock(&hw->fifo_lock);
+
+	return ret;
+}
+
+static int fifo_dequeue(struct ilo_hwinfo *hw, char *fifobar, int *entry)
+{
+	struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
+	int ret = 0;
+	u64 c;
+
+	spin_lock(&hw->fifo_lock);
+	c = fifo_q->fifobar[fifo_q->head & fifo_q->imask];
+	if (c & ENTRY_MASK_C) {
+		if (entry)
+			*entry = c & ENTRY_MASK_NOSTATE;
+
+		fifo_q->fifobar[fifo_q->head & fifo_q->imask] =
+							(c | ENTRY_MASK) + 1;
+		fifo_q->head += 1;
+		ret = 1;
+	}
+	spin_unlock(&hw->fifo_lock);
+
+	return ret;
+}
+
+static int ilo_pkt_enqueue(struct ilo_hwinfo *hw, struct ccb *ccb,
+			   int dir, int id, int len)
+{
+	char *fifobar;
+	int entry;
+
+	if (dir == SENDQ)
+		fifobar = ccb->ccb_u1.send_fifobar;
+	else
+		fifobar = ccb->ccb_u3.recv_fifobar;
+
+	entry = mk_entry(id, len);
+	return fifo_enqueue(hw, fifobar, entry);
+}
+
+static int ilo_pkt_dequeue(struct ilo_hwinfo *hw, struct ccb *ccb,
+			   int dir, int *id, int *len, void **pkt)
+{
+	char *fifobar, *desc;
+	int entry = 0, pkt_id = 0;
+	int ret;
+
+	if (dir == SENDQ) {
+		fifobar = ccb->ccb_u1.send_fifobar;
+		desc = ccb->ccb_u2.send_desc;
+	} else {
+		fifobar = ccb->ccb_u3.recv_fifobar;
+		desc = ccb->ccb_u4.recv_desc;
+	}
+
+	ret = fifo_dequeue(hw, fifobar, &entry);
+	if (ret) {
+		pkt_id = get_entry_id(entry);
+		if (id)
+			*id = pkt_id;
+		if (len)
+			*len = get_entry_len(entry);
+		if (pkt)
+			*pkt = (void *)(desc + desc_mem_sz(pkt_id));
+	}
+
+	return ret;
+}
+
+static inline void doorbell_set(struct ccb *ccb)
+{
+	iowrite8(1, ccb->ccb_u5.db_base);
+}
+
+static inline void doorbell_clr(struct ccb *ccb)
+{
+	iowrite8(2, ccb->ccb_u5.db_base);
+}
+static inline int ctrl_set(int l2sz, int idxmask, int desclim)
+{
+	int active = 0, go = 1;
+	return l2sz << CTRL_BITPOS_L2SZ |
+	       idxmask << CTRL_BITPOS_FIFOINDEXMASK |
+	       desclim << CTRL_BITPOS_DESCLIMIT |
+	       active << CTRL_BITPOS_A |
+	       go << CTRL_BITPOS_G;
+}
+static void ctrl_setup(struct ccb *ccb, int nr_desc, int l2desc_sz)
+{
+	/* for simplicity, use the same parameters for send and recv ctrls */
+	ccb->send_ctrl = ctrl_set(l2desc_sz, nr_desc-1, nr_desc-1);
+	ccb->recv_ctrl = ctrl_set(l2desc_sz, nr_desc-1, nr_desc-1);
+}
+
+static inline int fifo_sz(int nr_entry)
+{
+	/* size of a fifo is determined by the number of entries it contains */
+	return (nr_entry * sizeof(u64)) + FIFOHANDLESIZE;
+}
+
+static void fifo_setup(void *base_addr, int nr_entry)
+{
+	struct fifo *fifo_q = base_addr;
+	int i;
+
+	/* set up an empty fifo */
+	fifo_q->head = 0;
+	fifo_q->tail = 0;
+	fifo_q->reset = 0;
+	fifo_q->nrents = nr_entry;
+	fifo_q->imask = nr_entry - 1;
+	fifo_q->merge = ENTRY_MASK_O;
+
+	for (i = 0; i < nr_entry; i++)
+		fifo_q->fifobar[i] = 0;
+}
+
+static void ilo_ccb_close(struct pci_dev *pdev, struct ccb_data *data)
+{
+	struct ccb *driver_ccb;
+	struct ccb __iomem *device_ccb;
+	int retries;
+
+	driver_ccb = &data->driver_ccb;
+	device_ccb = data->mapped_ccb;
+
+	/* complicated dance to tell the hw we are stopping */
+	doorbell_clr(driver_ccb);
+	iowrite32(ioread32(&device_ccb->send_ctrl) & ~(1 << CTRL_BITPOS_G),
+		  &device_ccb->send_ctrl);
+	iowrite32(ioread32(&device_ccb->recv_ctrl) & ~(1 << CTRL_BITPOS_G),
+		  &device_ccb->recv_ctrl);
+
+	/* give iLO some time to process stop request */
+	for (retries = 1000; retries > 0; retries--) {
+		doorbell_set(driver_ccb);
+		udelay(1);
+		if (!(ioread32(&device_ccb->send_ctrl) & (1 << CTRL_BITPOS_A))
+		    &&
+		    !(ioread32(&device_ccb->recv_ctrl) & (1 << CTRL_BITPOS_A)))
+			break;
+	}
+	if (retries == 0)
+		dev_err(&pdev->dev, "Closing, but controller still active\n");
+
+	/* clear the hw ccb */
+	memset_io(device_ccb, 0, sizeof(struct ccb));
+
+	/* free resources used to back send/recv queues */
+	pci_free_consistent(pdev, data->dma_size, data->dma_va, data->dma_pa);
+}
+
+static int ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
+{
+	char *dma_va, *dma_pa;
+	int pkt_id, pkt_sz, i, error;
+	struct ccb *driver_ccb, *ilo_ccb;
+	struct pci_dev *pdev;
+
+	driver_ccb = &data->driver_ccb;
+	ilo_ccb = &data->ilo_ccb;
+	pdev = hw->ilo_dev;
+
+	data->dma_size = 2 * fifo_sz(NR_QENTRY) +
+			 2 * desc_mem_sz(NR_QENTRY) +
+			 ILO_START_ALIGN + ILO_CACHE_SZ;
+
+	error = -ENOMEM;
+	data->dma_va = pci_alloc_consistent(pdev, data->dma_size,
+					    &data->dma_pa);
+	if (!data->dma_va)
+		goto out;
+
+	dma_va = (char *)data->dma_va;
+	dma_pa = (char *)data->dma_pa;
+
+	memset(dma_va, 0, data->dma_size);
+
+	dma_va = (char *)roundup((unsigned long)dma_va, ILO_START_ALIGN);
+	dma_pa = (char *)roundup((unsigned long)dma_pa, ILO_START_ALIGN);
+
+	/*
+	 * Create two ccb's, one with virt addrs, one with phys addrs.
+	 * Copy the phys addr ccb to device shared mem.
+	 */
+	ctrl_setup(driver_ccb, NR_QENTRY, L2_QENTRY_SZ);
+	ctrl_setup(ilo_ccb, NR_QENTRY, L2_QENTRY_SZ);
+
+	fifo_setup(dma_va, NR_QENTRY);
+	driver_ccb->ccb_u1.send_fifobar = dma_va + FIFOHANDLESIZE;
+	ilo_ccb->ccb_u1.send_fifobar = dma_pa + FIFOHANDLESIZE;
+	dma_va += fifo_sz(NR_QENTRY);
+	dma_pa += fifo_sz(NR_QENTRY);
+
+	dma_va = (char *)roundup((unsigned long)dma_va, ILO_CACHE_SZ);
+	dma_pa = (char *)roundup((unsigned long)dma_pa, ILO_CACHE_SZ);
+
+	fifo_setup(dma_va, NR_QENTRY);
+	driver_ccb->ccb_u3.recv_fifobar = dma_va + FIFOHANDLESIZE;
+	ilo_ccb->ccb_u3.recv_fifobar = dma_pa + FIFOHANDLESIZE;
+	dma_va += fifo_sz(NR_QENTRY);
+	dma_pa += fifo_sz(NR_QENTRY);
+
+	driver_ccb->ccb_u2.send_desc = dma_va;
+	ilo_ccb->ccb_u2.send_desc = dma_pa;
+	dma_pa += desc_mem_sz(NR_QENTRY);
+	dma_va += desc_mem_sz(NR_QENTRY);
+
+	driver_ccb->ccb_u4.recv_desc = dma_va;
+	ilo_ccb->ccb_u4.recv_desc = dma_pa;
+
+	driver_ccb->channel = slot;
+	ilo_ccb->channel = slot;
+
+	driver_ccb->ccb_u5.db_base = hw->db_vaddr + (slot << L2_DB_SIZE);
+	ilo_ccb->ccb_u5.db_base = NULL; /* hw ccb's doorbell is not used */
+
+	/* copy the ccb with physical addrs to device memory */
+	data->mapped_ccb = (struct ccb __iomem *)
+				(hw->ram_vaddr + (slot * ILOHW_CCB_SZ));
+	memcpy_toio(data->mapped_ccb, ilo_ccb, sizeof(struct ccb));
+
+	/* put packets on the send and receive queues */
+	pkt_sz = 0;
+	for (pkt_id = 0; pkt_id < NR_QENTRY; pkt_id++) {
+		ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, pkt_sz);
+		doorbell_set(driver_ccb);
+	}
+
+	pkt_sz = desc_mem_sz(1);
+	for (pkt_id = 0; pkt_id < NR_QENTRY; pkt_id++)
+		ilo_pkt_enqueue(hw, driver_ccb, RECVQ, pkt_id, pkt_sz);
+
+	doorbell_clr(driver_ccb);
+
+	/* make sure iLO is really handling requests */
+	for (i = 1000; i > 0; i--) {
+		if (ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, NULL, NULL))
+			break;
+		udelay(1);
+	}
+
+	if (i) {
+		ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, 0);
+		doorbell_set(driver_ccb);
+	} else {
+		dev_err(&pdev->dev, "Open could not dequeue a packet\n");
+		error = -EBUSY;
+		goto free;
+	}
+
+	return 0;
+free:
+	pci_free_consistent(pdev, data->dma_size, data->dma_va, data->dma_pa);
+out:
+	return error;
+}
+
+static inline int is_channel_reset(struct ccb *ccb)
+{
+	/* check for this particular channel needing a reset */
+	return FIFOBARTOHANDLE(ccb->ccb_u1.send_fifobar)->reset;
+}
+
+static inline void set_channel_reset(struct ccb *ccb)
+{
+	/* set a flag indicating this channel needs a reset */
+	FIFOBARTOHANDLE(ccb->ccb_u1.send_fifobar)->reset = 1;
+}
+
+static inline int is_device_reset(struct ilo_hwinfo *hw)
+{
+	/* check for global reset condition */
+	return ioread32(&hw->mmio_vaddr[DB_OUT]) & (1 << DB_RESET);
+}
+
+static inline void clear_device(struct ilo_hwinfo *hw)
+{
+	/* clear the device (reset bits, pending channel entries) */
+	iowrite32(-1, &hw->mmio_vaddr[DB_OUT]);
+}
+
+static void ilo_locked_reset(struct ilo_hwinfo *hw)
+{
+	int slot;
+
+	/*
+	 * Mapped memory is zeroed on ilo reset, so set a per ccb flag
+	 * to indicate that this ccb needs to be closed and reopened.
+	 */
+	for (slot = 0; slot < MAX_CCB; slot++) {
+		if (!hw->ccb_alloc[slot])
+			continue;
+		set_channel_reset(&hw->ccb_alloc[slot]->driver_ccb);
+	}
+
+	clear_device(hw);
+}
+
+static void ilo_reset(struct ilo_hwinfo *hw)
+{
+	spin_lock(&hw->alloc_lock);
+
+	/* reset might have been handled after lock was taken */
+	if (is_device_reset(hw))
+		ilo_locked_reset(hw);
+
+	spin_unlock(&hw->alloc_lock);
+}
+
+static ssize_t ilo_read(struct file *fp, char __user *buf,
+			size_t len, loff_t *off)
+{
+	int err, found, cnt, pkt_id, pkt_len;
+	struct ccb_data *data;
+	struct ccb *driver_ccb;
+	struct ilo_hwinfo *hw;
+	void *pkt;
+
+	data = fp->private_data;
+	driver_ccb = &data->driver_ccb;
+	hw = data->ilo_hw;
+
+	if (is_device_reset(hw) || is_channel_reset(driver_ccb)) {
+		/*
+		 * If the device has been reset, applications
+		 * need to close and reopen all ccbs.
+		 */
+		ilo_reset(hw);
+		return -ENODEV;
+	}
+
+	/*
+	 * This function is to be called when data is expected
+	 * in the channel, and will return an error if no packet is found
+	 * during the loop below.  The sleep/retry logic is to allow
+	 * applications to call read() immediately post write(),
+	 * and give iLO some time to process the sent packet.
+	 */
+	cnt = 20;
+	do {
+		/* look for a received packet */
+		found = ilo_pkt_dequeue(hw, driver_ccb, RECVQ, &pkt_id,
+					&pkt_len, &pkt);
+		if (found)
+			break;
+		cnt--;
+		msleep(100);
+	} while (!found && cnt);
+
+	if (!found)
+		return -EAGAIN;
+
+	/* only copy the length of the received packet */
+	if (pkt_len < len)
+		len = pkt_len;
+
+	err = copy_to_user(buf, pkt, len);
+
+	/* return the received packet to the queue */
+	ilo_pkt_enqueue(hw, driver_ccb, RECVQ, pkt_id, desc_mem_sz(1));
+
+	return err ? -EFAULT : len;
+}
+
+static ssize_t ilo_write(struct file *fp, const char __user *buf,
+			 size_t len, loff_t *off)
+{
+	int err, pkt_id, pkt_len;
+	struct ccb_data *data;
+	struct ccb *driver_ccb;
+	struct ilo_hwinfo *hw;
+	void *pkt;
+
+	data = fp->private_data;
+	driver_ccb = &data->driver_ccb;
+	hw = data->ilo_hw;
+
+	if (is_device_reset(hw) || is_channel_reset(driver_ccb)) {
+		/*
+		 * If the device has been reset, applications
+		 * need to close and reopen all ccbs.
+		 */
+		ilo_reset(hw);
+		return -ENODEV;
+	}
+
+	/* get a packet to send the user command */
+	if (!ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, &pkt_len, &pkt))
+		return -EBUSY;
+
+	/* limit the length to the length of the packet */
+	if (pkt_len < len)
+		len = pkt_len;
+
+	/* on failure, set the len to 0 to return empty packet to the device */
+	err = copy_from_user(pkt, buf, len);
+	if (err)
+		len = 0;
+
+	/* send the packet */
+	ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, len);
+	doorbell_set(driver_ccb);
+
+	return err ? -EFAULT : len;
+}
+
+static int ilo_close(struct inode *ip, struct file *fp)
+{
+	int slot;
+	struct ccb_data *data;
+	struct ilo_hwinfo *hw;
+
+	slot = iminor(ip) % MAX_CCB;
+	hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
+
+	spin_lock(&hw->alloc_lock);
+
+	if (is_device_reset(hw))
+		ilo_locked_reset(hw);
+
+	if (hw->ccb_alloc[slot]->ccb_cnt == 1) {
+
+		data = fp->private_data;
+
+		ilo_ccb_close(hw->ilo_dev, data);
+
+		kfree(data);
+		hw->ccb_alloc[slot] = NULL;
+	} else
+		hw->ccb_alloc[slot]->ccb_cnt--;
+
+	spin_unlock(&hw->alloc_lock);
+
+	return 0;
+}
+
+static int ilo_open(struct inode *ip, struct file *fp)
+{
+	int slot, error;
+	struct ccb_data *data;
+	struct ilo_hwinfo *hw;
+
+	slot = iminor(ip) % MAX_CCB;
+	hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
+
+	/* new ccb allocation */
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	spin_lock(&hw->alloc_lock);
+
+	if (is_device_reset(hw))
+		ilo_locked_reset(hw);
+
+	/* each fd private_data holds sw/hw view of ccb */
+	if (hw->ccb_alloc[slot] == NULL) {
+		/* create a channel control block for this minor */
+		error = ilo_ccb_open(hw, data, slot);
+		if (!error) {
+			hw->ccb_alloc[slot] = data;
+			hw->ccb_alloc[slot]->ccb_cnt = 1;
+			hw->ccb_alloc[slot]->ccb_excl = fp->f_flags & O_EXCL;
+			hw->ccb_alloc[slot]->ilo_hw = hw;
+		} else
+			kfree(data);
+	} else {
+		kfree(data);
+		if (fp->f_flags & O_EXCL || hw->ccb_alloc[slot]->ccb_excl) {
+			/*
+			 * The channel exists, and either this open
+			 * or a previous open of this channel wants
+			 * exclusive access.
+			 */
+			error = -EBUSY;
+		} else {
+			hw->ccb_alloc[slot]->ccb_cnt++;
+			error = 0;
+		}
+	}
+	spin_unlock(&hw->alloc_lock);
+
+	if (!error)
+		fp->private_data = hw->ccb_alloc[slot];
+
+	return error;
+}
+
+static const struct file_operations ilo_fops = {
+	.owner		= THIS_MODULE,
+	.read		= ilo_read,
+	.write		= ilo_write,
+	.open 		= ilo_open,
+	.release 	= ilo_close,
+};
+
+static void ilo_unmap_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
+{
+	pci_iounmap(pdev, hw->db_vaddr);
+	pci_iounmap(pdev, hw->ram_vaddr);
+	pci_iounmap(pdev, hw->mmio_vaddr);
+}
+
+static int __devinit ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
+{
+	int error = -ENOMEM;
+
+	/* map the memory mapped i/o registers */
+	hw->mmio_vaddr = pci_iomap(pdev, 1, 0);
+	if (hw->mmio_vaddr == NULL) {
+		dev_err(&pdev->dev, "Error mapping mmio\n");
+		goto out;
+	}
+
+	/* map the adapter shared memory region */
+	hw->ram_vaddr = pci_iomap(pdev, 2, MAX_CCB * ILOHW_CCB_SZ);
+	if (hw->ram_vaddr == NULL) {
+		dev_err(&pdev->dev, "Error mapping shared mem\n");
+		goto mmio_free;
+	}
+
+	/* map the doorbell aperture */
+	hw->db_vaddr = pci_iomap(pdev, 3, MAX_CCB * ONE_DB_SIZE);
+	if (hw->db_vaddr == NULL) {
+		dev_err(&pdev->dev, "Error mapping doorbell\n");
+		goto ram_free;
+	}
+
+	return 0;
+ram_free:
+	pci_iounmap(pdev, hw->ram_vaddr);
+mmio_free:
+	pci_iounmap(pdev, hw->mmio_vaddr);
+out:
+	return error;
+}
+
+static void ilo_remove(struct pci_dev *pdev)
+{
+	int i, minor;
+	struct ilo_hwinfo *ilo_hw = pci_get_drvdata(pdev);
+
+	clear_device(ilo_hw);
+
+	minor = MINOR(ilo_hw->cdev.dev);
+	for (i = minor; i < minor + MAX_CCB; i++)
+		device_destroy(ilo_class, MKDEV(ilo_major, i));
+
+	cdev_del(&ilo_hw->cdev);
+	ilo_unmap_device(pdev, ilo_hw);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	kfree(ilo_hw);
+	ilo_hwdev[(minor / MAX_CCB)] = 0;
+}
+
+static int __devinit ilo_probe(struct pci_dev *pdev,
+			       const struct pci_device_id *ent)
+{
+	int devnum, minor, start, error;
+	struct ilo_hwinfo *ilo_hw;
+
+	/* find a free range for device files */
+	for (devnum = 0; devnum < MAX_ILO_DEV; devnum++) {
+		if (ilo_hwdev[devnum] == 0) {
+			ilo_hwdev[devnum] = 1;
+			break;
+		}
+	}
+
+	if (devnum == MAX_ILO_DEV) {
+		dev_err(&pdev->dev, "Error finding free device\n");
+		return -ENODEV;
+	}
+
+	/* track global allocations for this device */
+	error = -ENOMEM;
+	ilo_hw = kzalloc(sizeof(*ilo_hw), GFP_KERNEL);
+	if (!ilo_hw)
+		goto out;
+
+	ilo_hw->ilo_dev = pdev;
+	spin_lock_init(&ilo_hw->alloc_lock);
+	spin_lock_init(&ilo_hw->fifo_lock);
+
+	error = pci_enable_device(pdev);
+	if (error)
+		goto free;
+
+	pci_set_master(pdev);
+
+	error = pci_request_regions(pdev, ILO_NAME);
+	if (error)
+		goto disable;
+
+	error = ilo_map_device(pdev, ilo_hw);
+	if (error)
+		goto free_regions;
+
+	pci_set_drvdata(pdev, ilo_hw);
+	clear_device(ilo_hw);
+
+	cdev_init(&ilo_hw->cdev, &ilo_fops);
+	ilo_hw->cdev.owner = THIS_MODULE;
+	start = devnum * MAX_CCB;
+	error = cdev_add(&ilo_hw->cdev, MKDEV(ilo_major, start), MAX_CCB);
+	if (error) {
+		dev_err(&pdev->dev, "Could not add cdev\n");
+		goto unmap;
+	}
+
+	for (minor = 0 ; minor < MAX_CCB; minor++) {
+		struct device *dev;
+		dev = device_create(ilo_class, &pdev->dev,
+				    MKDEV(ilo_major, minor), NULL,
+				    "hpilo!d%dccb%d", devnum, minor);
+		if (IS_ERR(dev))
+			dev_err(&pdev->dev, "Could not create files\n");
+	}
+
+	return 0;
+unmap:
+	ilo_unmap_device(pdev, ilo_hw);
+free_regions:
+	pci_release_regions(pdev);
+disable:
+	pci_disable_device(pdev);
+free:
+	kfree(ilo_hw);
+out:
+	ilo_hwdev[devnum] = 0;
+	return error;
+}
+
+static struct pci_device_id ilo_devices[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xB204) },
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, ilo_devices);
+
+static struct pci_driver ilo_driver = {
+	.name 	  = ILO_NAME,
+	.id_table = ilo_devices,
+	.probe 	  = ilo_probe,
+	.remove   = __devexit_p(ilo_remove),
+};
+
+static int __init ilo_init(void)
+{
+	int error;
+	dev_t dev;
+
+	ilo_class = class_create(THIS_MODULE, "iLO");
+	if (IS_ERR(ilo_class)) {
+		error = PTR_ERR(ilo_class);
+		goto out;
+	}
+
+	error = alloc_chrdev_region(&dev, 0, MAX_OPEN, ILO_NAME);
+	if (error)
+		goto class_destroy;
+
+	ilo_major = MAJOR(dev);
+
+	error =	pci_register_driver(&ilo_driver);
+	if (error)
+		goto chr_remove;
+
+	return 0;
+chr_remove:
+	unregister_chrdev_region(dev, MAX_OPEN);
+class_destroy:
+	class_destroy(ilo_class);
+out:
+	return error;
+}
+
+static void __exit ilo_exit(void)
+{
+	pci_unregister_driver(&ilo_driver);
+	unregister_chrdev_region(MKDEV(ilo_major, 0), MAX_OPEN);
+	class_destroy(ilo_class);
+}
+
+MODULE_VERSION("0.05");
+MODULE_ALIAS(ILO_NAME);
+MODULE_DESCRIPTION(ILO_NAME);
+MODULE_AUTHOR("David Altobelli <david.altobelli@hp.com>");
+MODULE_LICENSE("GPL v2");
+
+module_init(ilo_init);
+module_exit(ilo_exit);
diff --git a/drivers/misc/hpilo.h b/drivers/misc/hpilo.h
new file mode 100644
index 0000000..a281207
--- /dev/null
+++ b/drivers/misc/hpilo.h
@@ -0,0 +1,189 @@
+/*
+ * linux/drivers/char/hpilo.h
+ *
+ * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
+ *	David Altobelli <david.altobelli@hp.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 __HPILO_H
+#define __HPILO_H
+
+#define ILO_NAME "hpilo"
+
+/* max number of open channel control blocks per device, hw limited to 32 */
+#define MAX_CCB		8
+/* max number of supported devices */
+#define MAX_ILO_DEV	1
+/* max number of files */
+#define MAX_OPEN	(MAX_CCB * MAX_ILO_DEV)
+
+/*
+ * Per device, used to track global memory allocations.
+ */
+struct ilo_hwinfo {
+	/* mmio registers on device */
+	char __iomem *mmio_vaddr;
+
+	/* doorbell registers on device */
+	char __iomem *db_vaddr;
+
+	/* shared memory on device used for channel control blocks */
+	char __iomem *ram_vaddr;
+
+	/* files corresponding to this device */
+	struct ccb_data *ccb_alloc[MAX_CCB];
+
+	struct pci_dev *ilo_dev;
+
+	spinlock_t alloc_lock;
+	spinlock_t fifo_lock;
+
+	struct cdev cdev;
+};
+
+/* offset from mmio_vaddr */
+#define DB_OUT		0xD4
+/* DB_OUT reset bit */
+#define DB_RESET	26
+
+/*
+ * Channel control block. Used to manage hardware queues.
+ * The format must match hw's version.  The hw ccb is 128 bytes,
+ * but the context area shouldn't be touched by the driver.
+ */
+#define ILOSW_CCB_SZ	64
+#define ILOHW_CCB_SZ 	128
+struct ccb {
+	union {
+		char *send_fifobar;
+		u64 padding1;
+	} ccb_u1;
+	union {
+		char *send_desc;
+		u64 padding2;
+	} ccb_u2;
+	u64 send_ctrl;
+
+	union {
+		char *recv_fifobar;
+		u64 padding3;
+	} ccb_u3;
+	union {
+		char *recv_desc;
+		u64 padding4;
+	} ccb_u4;
+	u64 recv_ctrl;
+
+	union {
+		char __iomem *db_base;
+		u64 padding5;
+	} ccb_u5;
+
+	u64 channel;
+
+	/* unused context area (64 bytes) */
+};
+
+/* ccb queue parameters */
+#define SENDQ		1
+#define RECVQ 		2
+#define NR_QENTRY    	4
+#define L2_QENTRY_SZ 	12
+
+/* ccb ctrl bitfields */
+#define CTRL_BITPOS_L2SZ             0
+#define CTRL_BITPOS_FIFOINDEXMASK    4
+#define CTRL_BITPOS_DESCLIMIT        18
+#define CTRL_BITPOS_A                30
+#define CTRL_BITPOS_G                31
+
+/* ccb doorbell macros */
+#define L2_DB_SIZE		14
+#define ONE_DB_SIZE		(1 << L2_DB_SIZE)
+
+/*
+ * Per fd structure used to track the ccb allocated to that dev file.
+ */
+struct ccb_data {
+	/* software version of ccb, using virtual addrs */
+	struct ccb  driver_ccb;
+
+	/* hardware version of ccb, using physical addrs */
+	struct ccb  ilo_ccb;
+
+	/* hardware ccb is written to this shared mapped device memory */
+	struct ccb __iomem *mapped_ccb;
+
+	/* dma'able memory used for send/recv queues */
+	void       *dma_va;
+	dma_addr_t  dma_pa;
+	size_t      dma_size;
+
+	/* pointer to hardware device info */
+	struct ilo_hwinfo *ilo_hw;
+
+	/* usage count, to allow for shared ccb's */
+	int	    ccb_cnt;
+
+	/* open wanted exclusive access to this ccb */
+	int	    ccb_excl;
+};
+
+/*
+ * FIFO queue structure, shared with hw.
+ */
+#define ILO_START_ALIGN	4096
+#define ILO_CACHE_SZ 	 128
+struct fifo {
+    u64 nrents;	/* user requested number of fifo entries */
+    u64 imask;  /* mask to extract valid fifo index */
+    u64 merge;	/*  O/C bits to merge in during enqueue operation */
+    u64 reset;	/* set to non-zero when the target device resets */
+    u8  pad_0[ILO_CACHE_SZ - (sizeof(u64) * 4)];
+
+    u64 head;
+    u8  pad_1[ILO_CACHE_SZ - (sizeof(u64))];
+
+    u64 tail;
+    u8  pad_2[ILO_CACHE_SZ - (sizeof(u64))];
+
+    u64 fifobar[1];
+};
+
+/* convert between struct fifo, and the fifobar, which is saved in the ccb */
+#define FIFOHANDLESIZE (sizeof(struct fifo) - sizeof(u64))
+#define FIFOBARTOHANDLE(_fifo) \
+	((struct fifo *)(((char *)(_fifo)) - FIFOHANDLESIZE))
+
+/* the number of qwords to consume from the entry descriptor */
+#define ENTRY_BITPOS_QWORDS      0
+/* descriptor index number (within a specified queue) */
+#define ENTRY_BITPOS_DESCRIPTOR  10
+/* state bit, fifo entry consumed by consumer */
+#define ENTRY_BITPOS_C           22
+/* state bit, fifo entry is occupied */
+#define ENTRY_BITPOS_O           23
+
+#define ENTRY_BITS_QWORDS        10
+#define ENTRY_BITS_DESCRIPTOR    12
+#define ENTRY_BITS_C             1
+#define ENTRY_BITS_O             1
+#define ENTRY_BITS_TOTAL	\
+	(ENTRY_BITS_C + ENTRY_BITS_O + \
+	 ENTRY_BITS_QWORDS + ENTRY_BITS_DESCRIPTOR)
+
+/* extract various entry fields */
+#define ENTRY_MASK ((1 << ENTRY_BITS_TOTAL) - 1)
+#define ENTRY_MASK_C (((1 << ENTRY_BITS_C) - 1) << ENTRY_BITPOS_C)
+#define ENTRY_MASK_O (((1 << ENTRY_BITS_O) - 1) << ENTRY_BITPOS_O)
+#define ENTRY_MASK_QWORDS \
+	(((1 << ENTRY_BITS_QWORDS) - 1) << ENTRY_BITPOS_QWORDS)
+#define ENTRY_MASK_DESCRIPTOR \
+	(((1 << ENTRY_BITS_DESCRIPTOR) - 1) << ENTRY_BITPOS_DESCRIPTOR)
+
+#define ENTRY_MASK_NOSTATE (ENTRY_MASK >> (ENTRY_BITS_C + ENTRY_BITS_O))
+
+#endif /* __HPILO_H */
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index 1861624..4ce3bdc 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -399,8 +399,9 @@
 		goto err_irq;
 	}
 
-	if (IS_ERR(device_create(phantom_class, &pdev->dev, MKDEV(phantom_major,
-			minor), "phantom%u", minor)))
+	if (IS_ERR(device_create_drvdata(phantom_class, &pdev->dev,
+					 MKDEV(phantom_major, minor),
+					 NULL, "phantom%u", minor)))
 		dev_err(&pdev->dev, "can't create device\n");
 
 	pci_set_drvdata(pdev, pht);
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 519d942..7b72a1b 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -241,6 +241,7 @@
 {
 	struct block_device *bdev;
 	struct block2mtd_dev *dev;
+	char *name;
 
 	if (!devname)
 		return NULL;
@@ -279,12 +280,13 @@
 
 	/* Setup the MTD structure */
 	/* make the name contain the block device in */
-	dev->mtd.name = kmalloc(sizeof("block2mtd: ") + strlen(devname),
+	name = kmalloc(sizeof("block2mtd: ") + strlen(devname) + 1,
 			GFP_KERNEL);
-	if (!dev->mtd.name)
+	if (!name)
 		goto devinit_err;
 
-	sprintf(dev->mtd.name, "block2mtd: %s", devname);
+	sprintf(name, "block2mtd: %s", devname);
+	dev->mtd.name = name;
 
 	dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
 	dev->mtd.erasesize = erase_size;
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 129d429..aef9f4b 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -28,10 +28,13 @@
 	if (!mtd)
 		return;
 
-	device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2), "mtd%d", mtd->index);
+	device_create_drvdata(mtd_class, NULL,
+			      MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
+			      NULL, "mtd%d", mtd->index);
 
-	device_create(mtd_class, NULL,
-		      MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1), "mtd%dro", mtd->index);
+	device_create_drvdata(mtd_class, NULL,
+			      MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
+			      NULL, "mtd%dro", mtd->index);
 }
 
 static void mtd_notify_remove(struct mtd_info* mtd)
diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
index aabad8c..8db4e6b 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -1010,7 +1010,7 @@
 	static int printed_version;
 	int retval, print_info;
 	struct vortex_chip_info * const vci = &vortex_info_tbl[chip_idx];
-	char *print_name = "3c59x";
+	const char *print_name = "3c59x";
 	struct pci_dev *pdev = NULL;
 	struct eisa_device *edev = NULL;
 	DECLARE_MAC_BUF(mac);
diff --git a/drivers/net/arm/at91_ether.c b/drivers/net/arm/at91_ether.c
index 1e39e78..71f7cec 100644
--- a/drivers/net/arm/at91_ether.c
+++ b/drivers/net/arm/at91_ether.c
@@ -677,7 +677,7 @@
 {
 	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
-	strlcpy(info->bus_info, dev->dev.parent->bus_id, sizeof(info->bus_info));
+	strlcpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
 }
 
 static const struct ethtool_ops at91ether_ethtool_ops = {
diff --git a/drivers/net/arm/ep93xx_eth.c b/drivers/net/arm/ep93xx_eth.c
index ecd8fc6..7a14980 100644
--- a/drivers/net/arm/ep93xx_eth.c
+++ b/drivers/net/arm/ep93xx_eth.c
@@ -848,7 +848,7 @@
 
 	ep->res = request_mem_region(pdev->resource[0].start,
 			pdev->resource[0].end - pdev->resource[0].start + 1,
-			pdev->dev.bus_id);
+			dev_name(&pdev->dev));
 	if (ep->res == NULL) {
 		dev_err(&pdev->dev, "Could not reserve memory region\n");
 		err = -ENOMEM;
diff --git a/drivers/net/arm/etherh.c b/drivers/net/arm/etherh.c
index e9d15ec..5c5f1e4 100644
--- a/drivers/net/arm/etherh.c
+++ b/drivers/net/arm/etherh.c
@@ -535,7 +535,7 @@
 	
 	if (!ecard_readchunk(&cd, ec, 0xf5, 0)) {
 		printk(KERN_ERR "%s: unable to read podule description string\n",
-		       ec->dev.bus_id);
+		       dev_name(&ec->dev));
 		goto no_addr;
 	}
 
@@ -554,7 +554,7 @@
 	}
 
 	printk(KERN_ERR "%s: unable to parse MAC address: %s\n",
-	       ec->dev.bus_id, cd.d.string);
+	       dev_name(&ec->dev), cd.d.string);
 
  no_addr:
 	return -ENODEV;
@@ -585,7 +585,7 @@
 {
 	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
-	strlcpy(info->bus_info, dev->dev.parent->bus_id,
+	strlcpy(info->bus_info, dev_name(dev->dev.parent),
 		sizeof(info->bus_info));
 }
 
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 6b1d7a8..739b3ab 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -866,7 +866,8 @@
 			err = PTR_ERR(ppp_class);
 			goto out_chrdev;
 		}
-		device_create(ppp_class, NULL, MKDEV(PPP_MAJOR, 0), "ppp");
+		device_create_drvdata(ppp_class, NULL, MKDEV(PPP_MAJOR, 0),
+				      NULL, "ppp");
 	}
 
 out:
diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c
index 5827324..f7d3349 100644
--- a/drivers/net/wan/cosa.c
+++ b/drivers/net/wan/cosa.c
@@ -397,9 +397,9 @@
 		err = PTR_ERR(cosa_class);
 		goto out_chrdev;
 	}
-	for (i=0; i<nr_cards; i++) {
-		device_create(cosa_class, NULL, MKDEV(cosa_major, i), "cosa%d", i);
-	}
+	for (i = 0; i < nr_cards; i++)
+		device_create_drvdata(cosa_class, NULL, MKDEV(cosa_major, i),
+				      NULL, "cosa%d", i);
 	err = 0;
 	goto out;
 	
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index eecf7cb..5a58b07 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -36,7 +36,7 @@
 #define _ACPIPHP_H
 
 #include <linux/acpi.h>
-#include <linux/kobject.h>	/* for KOBJ_NAME_LEN */
+#include <linux/kobject.h>
 #include <linux/mutex.h>
 #include <linux/pci_hotplug.h>
 
@@ -51,7 +51,7 @@
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
 
 /* name size which is used for entries in pcihpfs */
-#define SLOT_NAME_SIZE	KOBJ_NAME_LEN		/* {_SUN} */
+#define SLOT_NAME_SIZE	20		/* {_SUN} */
 
 struct acpiphp_bridge;
 struct acpiphp_slot;
diff --git a/drivers/power/apm_power.c b/drivers/power/apm_power.c
index a489227..936bae5 100644
--- a/drivers/power/apm_power.c
+++ b/drivers/power/apm_power.c
@@ -78,7 +78,7 @@
 	main_battery = NULL;
 	bp.main = main_battery;
 
-	error = class_for_each_device(power_supply_class, &bp,
+	error = class_for_each_device(power_supply_class, NULL, &bp,
 				      __find_main_battery);
 	if (error) {
 		main_battery = bp.main;
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index af1633e..cb1ccb4 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -41,7 +41,7 @@
 
 	dev_dbg(psy->dev, "%s\n", __func__);
 
-	class_for_each_device(power_supply_class, psy,
+	class_for_each_device(power_supply_class, NULL, psy,
 			      __power_supply_changed_work);
 
 	power_supply_update_leds(psy);
@@ -79,7 +79,7 @@
 {
 	int error;
 
-	error = class_for_each_device(power_supply_class, psy,
+	error = class_for_each_device(power_supply_class, NULL, psy,
 				      __power_supply_am_i_supplied);
 
 	dev_dbg(psy->dev, "%s %d\n", __func__, error);
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 58b7336..d397fa5 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -345,7 +345,7 @@
 	struct device *dev;
 	struct rtc_device *rtc = NULL;
 
-	dev = class_find_device(rtc_class, name, __rtc_match);
+	dev = class_find_device(rtc_class, NULL, name, __rtc_match);
 	if (dev)
 		rtc = to_rtc_device(dev);
 
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 81a96e0..c3dee90 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -1168,17 +1168,19 @@
 	if (rc)
 		goto out;
 
-	rp->clttydev = device_create(class3270, &rp->cdev->dev,
-				     MKDEV(IBM_TTY3270_MAJOR, rp->minor),
-				     "tty%s", rp->cdev->dev.bus_id);
+	rp->clttydev = device_create_drvdata(class3270, &rp->cdev->dev,
+					     MKDEV(IBM_TTY3270_MAJOR, rp->minor),
+					     NULL,
+					     "tty%s", rp->cdev->dev.bus_id);
 	if (IS_ERR(rp->clttydev)) {
 		rc = PTR_ERR(rp->clttydev);
 		goto out_ttydev;
 	}
 
-	rp->cltubdev = device_create(class3270, &rp->cdev->dev,
-				     MKDEV(IBM_FS3270_MAJOR, rp->minor),
-				     "tub%s", rp->cdev->dev.bus_id);
+	rp->cltubdev = device_create_drvdata(class3270, &rp->cdev->dev,
+					     MKDEV(IBM_FS3270_MAJOR, rp->minor),
+					     NULL,
+					     "tub%s", rp->cdev->dev.bus_id);
 	if (!IS_ERR(rp->cltubdev))
 		goto out;
 
diff --git a/drivers/s390/char/tape_class.c b/drivers/s390/char/tape_class.c
index 6dfdb7c..12c2a5a 100644
--- a/drivers/s390/char/tape_class.c
+++ b/drivers/s390/char/tape_class.c
@@ -69,10 +69,9 @@
 	if (rc)
 		goto fail_with_cdev;
 
-	tcd->class_device = device_create(tape_class, device,
-					  tcd->char_device->dev,
-					  "%s", tcd->device_name
-			);
+	tcd->class_device = device_create_drvdata(tape_class, device,
+						  tcd->char_device->dev,
+						  NULL, "%s", tcd->device_name);
 	rc = IS_ERR(tcd->class_device) ? PTR_ERR(tcd->class_device) : 0;
 	if (rc)
 		goto fail_with_cdev;
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index b0ac44b..c1f352b 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -896,8 +896,9 @@
 		goto fail_free_cdev;
 	}
 
-	urd->device = device_create(vmur_class, NULL, urd->char_device->dev,
-					"%s", node_id);
+	urd->device = device_create_drvdata(vmur_class, NULL,
+					    urd->char_device->dev, NULL,
+					    "%s", node_id);
 	if (IS_ERR(urd->device)) {
 		rc = PTR_ERR(urd->device);
 		TRACE("ur_set_online: device_create rc=%d\n", rc);
diff --git a/drivers/sbus/sbus.c b/drivers/sbus/sbus.c
index c37d7c2..73a86d0 100644
--- a/drivers/sbus/sbus.c
+++ b/drivers/sbus/sbus.c
@@ -78,7 +78,7 @@
 	else
 		sdev->ofdev.dev.parent = &sdev->bus->ofdev.dev;
 	sdev->ofdev.dev.bus = &sbus_bus_type;
-	sprintf(sdev->ofdev.dev.bus_id, "sbus[%08x]", dp->node);
+	dev_set_name(&sdev->ofdev.dev, "sbus[%08x]", dp->node);
 
 	if (of_device_register(&sdev->ofdev) != 0)
 		printk(KERN_DEBUG "sbus: device registration error for %s!\n",
@@ -257,11 +257,11 @@
 	sbus->ofdev.node = dp;
 	sbus->ofdev.dev.parent = NULL;
 	sbus->ofdev.dev.bus = &sbus_bus_type;
-	sprintf(sbus->ofdev.dev.bus_id, "sbus%d", num_sbus);
+	dev_set_name(&sbus->ofdev.dev, "sbus%d", num_sbus);
 
 	if (of_device_register(&sbus->ofdev) != 0)
 		printk(KERN_DEBUG "sbus: device registration error for %s!\n",
-		       sbus->ofdev.dev.bus_id);
+		       dev_name(&sbus->ofdev.dev));
 
 	dev_dp = dp->child;
 	while (dev_dp) {
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 2bc30e3..1fe0901 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -271,8 +271,8 @@
 		pHba->initialized = TRUE;
 		pHba->state &= ~DPTI_STATE_RESET;
 		if (adpt_sysfs_class) {
-			struct device *dev = device_create(adpt_sysfs_class,
-				NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit),
+			struct device *dev = device_create_drvdata(adpt_sysfs_class,
+				NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit), NULL,
 				"dpti%d", pHba->unit);
 			if (IS_ERR(dev)) {
 				printk(KERN_WARNING"dpti%d: unable to "
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 35cd892..fed0b02 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -232,8 +232,8 @@
 	}
 
 	if (shost->transportt->create_work_queue) {
-		snprintf(shost->work_q_name, KOBJ_NAME_LEN, "scsi_wq_%d",
-			shost->host_no);
+		snprintf(shost->work_q_name, sizeof(shost->work_q_name),
+			 "scsi_wq_%d", shost->host_no);
 		shost->work_q = create_singlethread_workqueue(
 					shost->work_q_name);
 		if (!shost->work_q) {
@@ -466,7 +466,8 @@
 	struct device *cdev;
 	struct Scsi_Host *shost = ERR_PTR(-ENXIO);
 
-	cdev = class_find_device(&shost_class, &hostnum, __scsi_host_match);
+	cdev = class_find_device(&shost_class, NULL, &hostnum,
+				 __scsi_host_match);
 	if (cdev) {
 		shost = scsi_host_get(class_to_shost(cdev));
 		put_device(cdev);
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 5fd64e7..a272b9a 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -417,15 +417,16 @@
 	fc_host->next_vport_number = 0;
 	fc_host->npiv_vports_inuse = 0;
 
-	snprintf(fc_host->work_q_name, KOBJ_NAME_LEN, "fc_wq_%d",
-		shost->host_no);
+	snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name),
+		 "fc_wq_%d", shost->host_no);
 	fc_host->work_q = create_singlethread_workqueue(
 					fc_host->work_q_name);
 	if (!fc_host->work_q)
 		return -ENOMEM;
 
-	snprintf(fc_host->devloss_work_q_name, KOBJ_NAME_LEN, "fc_dl_%d",
-		shost->host_no);
+	snprintf(fc_host->devloss_work_q_name,
+		 sizeof(fc_host->devloss_work_q_name),
+		 "fc_dl_%d", shost->host_no);
 	fc_host->devloss_work_q = create_singlethread_workqueue(
 					fc_host->devloss_work_q_name);
 	if (!fc_host->devloss_work_q) {
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 3af7cbc..043c392 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -170,7 +170,7 @@
 	int err;
 
 	for (id = 1; id < ISCSI_MAX_EPID; id++) {
-		dev = class_find_device(&iscsi_endpoint_class, &id,
+		dev = class_find_device(&iscsi_endpoint_class, NULL, &id,
 					iscsi_match_epid);
 		if (!dev)
 			break;
@@ -222,7 +222,7 @@
 	struct iscsi_endpoint *ep;
 	struct device *dev;
 
-	dev = class_find_device(&iscsi_endpoint_class, &handle,
+	dev = class_find_device(&iscsi_endpoint_class, NULL, &handle,
 				iscsi_match_epid);
 	if (!dev)
 		return NULL;
@@ -247,8 +247,8 @@
 	atomic_set(&ihost->nr_scans, 0);
 	mutex_init(&ihost->mutex);
 
-	snprintf(ihost->scan_workq_name, KOBJ_NAME_LEN, "iscsi_scan_%d",
-		shost->host_no);
+	snprintf(ihost->scan_workq_name, sizeof(ihost->scan_workq_name),
+		 "iscsi_scan_%d", shost->host_no);
 	ihost->scan_workq = create_singlethread_workqueue(
 						ihost->scan_workq_name);
 	if (!ihost->scan_workq)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 1ad12af..1771b24 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -502,7 +502,7 @@
 	struct device		*dev;
 	struct spi_master	*master = NULL;
 
-	dev = class_find_device(&spi_master_class, &bus_num,
+	dev = class_find_device(&spi_master_class, NULL, &bus_num,
 				__spi_master_match);
 	if (dev)
 		master = container_of(dev, struct spi_master, dev);
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index ddbe1a5..2833fd7 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -576,7 +576,8 @@
 		struct device *dev;
 
 		spidev->devt = MKDEV(SPIDEV_MAJOR, minor);
-		dev = device_create(spidev_class, &spi->dev, spidev->devt,
+		dev = device_create_drvdata(spidev_class, &spi->dev,
+				spidev->devt, spidev,
 				"spidev%d.%d",
 				spi->master->bus_num, spi->chip_select);
 		status = IS_ERR(dev) ? PTR_ERR(dev) : 0;
@@ -586,7 +587,6 @@
 	}
 	if (status == 0) {
 		set_bit(minor, minors);
-		spi_set_drvdata(spi, spidev);
 		list_add(&spidev->device_entry, &device_list);
 	}
 	mutex_unlock(&device_list_lock);
diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
index a4aaab9..2e9079d 100644
--- a/drivers/uio/Kconfig
+++ b/drivers/uio/Kconfig
@@ -15,7 +15,7 @@
 
 config UIO_CIF
 	tristate "generic Hilscher CIF Card driver"
-	depends on UIO && PCI
+	depends on PCI
 	default n
 	help
 	  Driver for Hilscher CIF DeviceNet and Profibus cards.  This
@@ -26,9 +26,15 @@
 	  To compile this driver as a module, choose M here: the module
 	  will be called uio_cif.
 
+config UIO_PDRV
+	tristate "Userspace I/O platform driver"
+	help
+	  Generic platform driver for Userspace I/O devices.
+
+	  If you don't know what to do here, say N.
+
 config UIO_SMX
 	tristate "SMX cryptengine UIO interface"
-	depends on UIO
 	default n
 	help
 	  Userspace IO interface to the Cryptography engine found on the
diff --git a/drivers/uio/Makefile b/drivers/uio/Makefile
index 18c4566..e00ce0d 100644
--- a/drivers/uio/Makefile
+++ b/drivers/uio/Makefile
@@ -1,3 +1,4 @@
 obj-$(CONFIG_UIO)	+= uio.o
 obj-$(CONFIG_UIO_CIF)	+= uio_cif.o
+obj-$(CONFIG_UIO_PDRV)	+= uio_pdrv.o
 obj-$(CONFIG_UIO_SMX)	+= uio_smx.o
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 5a7ca2e..3a6934b 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -427,6 +427,31 @@
 	return retval;
 }
 
+static ssize_t uio_write(struct file *filep, const char __user *buf,
+			size_t count, loff_t *ppos)
+{
+	struct uio_listener *listener = filep->private_data;
+	struct uio_device *idev = listener->dev;
+	ssize_t retval;
+	s32 irq_on;
+
+	if (idev->info->irq == UIO_IRQ_NONE)
+		return -EIO;
+
+	if (count != sizeof(s32))
+		return -EINVAL;
+
+	if (!idev->info->irqcontrol)
+		return -ENOSYS;
+
+	if (copy_from_user(&irq_on, buf, count))
+		return -EFAULT;
+
+	retval = idev->info->irqcontrol(idev->info, irq_on);
+
+	return retval ? retval : sizeof(s32);
+}
+
 static int uio_find_mem_index(struct vm_area_struct *vma)
 {
 	int mi;
@@ -546,6 +571,7 @@
 	.open		= uio_open,
 	.release	= uio_release,
 	.read		= uio_read,
+	.write		= uio_write,
 	.mmap		= uio_mmap,
 	.poll		= uio_poll,
 	.fasync		= uio_fasync,
diff --git a/drivers/uio/uio_pdrv.c b/drivers/uio/uio_pdrv.c
new file mode 100644
index 0000000..5d0d2e8
--- /dev/null
+++ b/drivers/uio/uio_pdrv.c
@@ -0,0 +1,118 @@
+/*
+ * drivers/uio/uio_pdrv.c
+ *
+ * Copyright (C) 2008 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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/platform_device.h>
+#include <linux/uio_driver.h>
+#include <linux/stringify.h>
+
+#define DRIVER_NAME "uio"
+
+struct uio_platdata {
+	struct uio_info *uioinfo;
+};
+
+static int uio_pdrv_probe(struct platform_device *pdev)
+{
+	struct uio_info *uioinfo = pdev->dev.platform_data;
+	struct uio_platdata *pdata;
+	struct uio_mem *uiomem;
+	int ret = -ENODEV;
+	int i;
+
+	if (!uioinfo || !uioinfo->name || !uioinfo->version) {
+		dev_dbg(&pdev->dev, "%s: err_uioinfo\n", __func__);
+		goto err_uioinfo;
+	}
+
+	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+	if (!pdata) {
+		ret = -ENOMEM;
+		dev_dbg(&pdev->dev, "%s: err_alloc_pdata\n", __func__);
+		goto err_alloc_pdata;
+	}
+
+	pdata->uioinfo = uioinfo;
+
+	uiomem = &uioinfo->mem[0];
+
+	for (i = 0; i < pdev->num_resources; ++i) {
+		struct resource *r = &pdev->resource[i];
+
+		if (r->flags != IORESOURCE_MEM)
+			continue;
+
+		if (uiomem >= &uioinfo->mem[MAX_UIO_MAPS]) {
+			dev_warn(&pdev->dev, "device has more than "
+					__stringify(MAX_UIO_MAPS)
+					" I/O memory resources.\n");
+			break;
+		}
+
+		uiomem->memtype = UIO_MEM_PHYS;
+		uiomem->addr = r->start;
+		uiomem->size = r->end - r->start + 1;
+		++uiomem;
+	}
+
+	while (uiomem < &uioinfo->mem[MAX_UIO_MAPS]) {
+		uiomem->size = 0;
+		++uiomem;
+	}
+
+	pdata->uioinfo->priv = pdata;
+
+	ret = uio_register_device(&pdev->dev, pdata->uioinfo);
+
+	if (ret) {
+		kfree(pdata);
+err_alloc_pdata:
+err_uioinfo:
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, pdata);
+
+	return 0;
+}
+
+static int uio_pdrv_remove(struct platform_device *pdev)
+{
+	struct uio_platdata *pdata = platform_get_drvdata(pdev);
+
+	uio_unregister_device(pdata->uioinfo);
+
+	return 0;
+}
+
+static struct platform_driver uio_pdrv = {
+	.probe = uio_pdrv_probe,
+	.remove = uio_pdrv_remove,
+	.driver = {
+		.name = DRIVER_NAME,
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init uio_pdrv_init(void)
+{
+	return platform_driver_register(&uio_pdrv);
+}
+
+static void __exit uio_pdrv_exit(void)
+{
+	platform_driver_unregister(&uio_pdrv);
+}
+module_init(uio_pdrv_init);
+module_exit(uio_pdrv_exit);
+
+MODULE_AUTHOR("Uwe Kleine-Koenig");
+MODULE_DESCRIPTION("Userspace I/O platform driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 54a350c..20290c5 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -1729,9 +1729,9 @@
 {
 	struct device *cldev;
 
-	cldev = device_create(usb_classdev_class, &dev->dev, dev->dev.devt,
-			      "usbdev%d.%d", dev->bus->busnum,
-			      dev->devnum);
+	cldev = device_create_drvdata(usb_classdev_class, &dev->dev,
+				      dev->dev.devt, NULL, "usbdev%d.%d",
+				      dev->bus->busnum, dev->devnum);
 	if (IS_ERR(cldev))
 		return PTR_ERR(cldev);
 	dev->usb_classdev = cldev;
@@ -1792,6 +1792,11 @@
 		usb_classdev_class = NULL;
 		goto out;
 	}
+	/* devices of this class shadow the major:minor of their parent
+	 * device, so clear ->dev_kobj to prevent adding duplicate entries
+	 * to /sys/dev
+	 */
+	usb_classdev_class->dev_kobj = NULL;
 
 	usb_register_notify(&usbdev_nb);
 #endif
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 913fb86..6b1b229 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -196,8 +196,9 @@
 		++temp;
 	else
 		temp = name;
-	intf->usb_dev = device_create(usb_class->class, &intf->dev,
-				      MKDEV(USB_MAJOR, minor), "%s", temp);
+	intf->usb_dev = device_create_drvdata(usb_class->class, &intf->dev,
+					      MKDEV(USB_MAJOR, minor), NULL,
+					      "%s", temp);
 	if (IS_ERR(intf->usb_dev)) {
 		down_write(&minor_rwsem);
 		usb_minors[intf->minor] = NULL;
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 9caaec3..49cd9e1 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -1360,8 +1360,8 @@
 
 
 	/* Setup the sysfs files for the printer gadget. */
-	dev->pdev = device_create(usb_gadget_class, NULL, g_printer_devno,
-			"g_printer");
+	dev->pdev = device_create_drvdata(usb_gadget_class, NULL,
+					  g_printer_devno, NULL, "g_printer");
 	if (IS_ERR(dev->pdev)) {
 		ERROR(dev, "Failed to create device: g_printer\n");
 		goto fail;
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index 293a462..6566fc0 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1162,8 +1162,9 @@
 	if (minor >= MON_BIN_MAX_MINOR)
 		return 0;
 
-	dev = device_create(mon_bin_class, ubus? ubus->controller: NULL,
-			MKDEV(MAJOR(mon_bin_dev0), minor), "usbmon%d", minor);
+	dev = device_create_drvdata(mon_bin_class, ubus? ubus->controller: NULL,
+				    MKDEV(MAJOR(mon_bin_dev0), minor), NULL,
+				    "usbmon%d", minor);
 	if (IS_ERR(dev))
 		return 0;
 
diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index 24ee96c..07b6add 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -1872,7 +1872,7 @@
 	struct fb_info *info = pci_get_drvdata(pdev);
 	struct aty128fb_par *par = info->par;
 	struct fb_var_screeninfo var;
-	char video_card[DEVICE_NAME_SIZE];
+	char video_card[50];
 	u8 chip_rev;
 	u32 dac;
 
diff --git a/drivers/video/aty/radeonfb.h b/drivers/video/aty/radeonfb.h
index c347e38..ccbfffd 100644
--- a/drivers/video/aty/radeonfb.h
+++ b/drivers/video/aty/radeonfb.h
@@ -289,7 +289,7 @@
 	struct radeon_regs 	state;
 	struct radeon_regs	init_state;
 
-	char			name[DEVICE_NAME_SIZE];
+	char			name[50];
 
 	unsigned long		mmio_base_phys;
 	unsigned long		fb_base_phys;
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 97aff8d..4be3b46 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -3586,7 +3586,8 @@
 
 	acquire_console_sem();
 	fb_register_client(&fbcon_event_notifier);
-	fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), "fbcon");
+	fbcon_device = device_create_drvdata(fb_class, NULL, MKDEV(0, 0),
+					     NULL, "fbcon");
 
 	if (IS_ERR(fbcon_device)) {
 		printk(KERN_WARNING "Unable to create device "
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 33ebdb1..1cd5071 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1439,8 +1439,9 @@
 			break;
 	fb_info->node = i;
 
-	fb_info->dev = device_create(fb_class, fb_info->device,
-				     MKDEV(FB_MAJOR, i), "fb%d", i);
+	fb_info->dev = device_create_drvdata(fb_class, fb_info->device,
+					     MKDEV(FB_MAJOR, i), NULL,
+					     "fb%d", i);
 	if (IS_ERR(fb_info->dev)) {
 		/* Not fatal */
 		printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev));
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 591bc29..d4427cb 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -610,6 +610,7 @@
 }
 
 static ssize_t store_target_kb(struct sys_device *dev,
+			       struct sysdev_attribute *attr,
 			       const char *buf,
 			       size_t count)
 {
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index e3eb355..40c36f7 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -362,8 +362,9 @@
 		goto out_chrdev;
 	}		
 	for (i = 0; i < MAX_CODADEVS; i++)
-		device_create(coda_psdev_class, NULL,
-			      MKDEV(CODA_PSDEV_MAJOR,i), "cfs%d", i);
+		device_create_drvdata(coda_psdev_class, NULL,
+				      MKDEV(CODA_PSDEV_MAJOR, i),
+				      NULL, "cfs%d", i);
 	coda_sysctl_init();
 	goto out;
 
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index e9602d8..08e28c9 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -309,32 +309,10 @@
 }
 EXPORT_SYMBOL_GPL(debugfs_create_symlink);
 
-/**
- * debugfs_remove - removes a file or directory from the debugfs filesystem
- * @dentry: a pointer to a the dentry of the file or directory to be
- *          removed.
- *
- * This function removes a file or directory in debugfs that was previously
- * created with a call to another debugfs function (like
- * debugfs_create_file() or variants thereof.)
- *
- * This function is required to be called in order for the file to be
- * removed, no automatic cleanup of files will happen when a module is
- * removed, you are responsible here.
- */
-void debugfs_remove(struct dentry *dentry)
+static void __debugfs_remove(struct dentry *dentry, struct dentry *parent)
 {
-	struct dentry *parent;
 	int ret = 0;
-	
-	if (!dentry)
-		return;
 
-	parent = dentry->d_parent;
-	if (!parent || !parent->d_inode)
-		return;
-
-	mutex_lock(&parent->d_inode->i_mutex);
 	if (debugfs_positive(dentry)) {
 		if (dentry->d_inode) {
 			dget(dentry);
@@ -354,12 +332,112 @@
 			dput(dentry);
 		}
 	}
+}
+
+/**
+ * debugfs_remove - removes a file or directory from the debugfs filesystem
+ * @dentry: a pointer to a the dentry of the file or directory to be
+ *          removed.
+ *
+ * This function removes a file or directory in debugfs that was previously
+ * created with a call to another debugfs function (like
+ * debugfs_create_file() or variants thereof.)
+ *
+ * This function is required to be called in order for the file to be
+ * removed, no automatic cleanup of files will happen when a module is
+ * removed, you are responsible here.
+ */
+void debugfs_remove(struct dentry *dentry)
+{
+	struct dentry *parent;
+	
+	if (!dentry)
+		return;
+
+	parent = dentry->d_parent;
+	if (!parent || !parent->d_inode)
+		return;
+
+	mutex_lock(&parent->d_inode->i_mutex);
+	__debugfs_remove(dentry, parent);
 	mutex_unlock(&parent->d_inode->i_mutex);
 	simple_release_fs(&debugfs_mount, &debugfs_mount_count);
 }
 EXPORT_SYMBOL_GPL(debugfs_remove);
 
 /**
+ * debugfs_remove_recursive - recursively removes a directory
+ * @dentry: a pointer to a the dentry of the directory to be removed.
+ *
+ * This function recursively removes a directory tree in debugfs that
+ * was previously created with a call to another debugfs function
+ * (like debugfs_create_file() or variants thereof.)
+ *
+ * This function is required to be called in order for the file to be
+ * removed, no automatic cleanup of files will happen when a module is
+ * removed, you are responsible here.
+ */
+void debugfs_remove_recursive(struct dentry *dentry)
+{
+	struct dentry *child;
+	struct dentry *parent;
+
+	if (!dentry)
+		return;
+
+	parent = dentry->d_parent;
+	if (!parent || !parent->d_inode)
+		return;
+
+	parent = dentry;
+	mutex_lock(&parent->d_inode->i_mutex);
+
+	while (1) {
+		/*
+		 * When all dentries under "parent" has been removed,
+		 * walk up the tree until we reach our starting point.
+		 */
+		if (list_empty(&parent->d_subdirs)) {
+			mutex_unlock(&parent->d_inode->i_mutex);
+			if (parent == dentry)
+				break;
+			parent = parent->d_parent;
+			mutex_lock(&parent->d_inode->i_mutex);
+		}
+		child = list_entry(parent->d_subdirs.next, struct dentry,
+				d_u.d_child);
+
+		/*
+		 * If "child" isn't empty, walk down the tree and
+		 * remove all its descendants first.
+		 */
+		if (!list_empty(&child->d_subdirs)) {
+			mutex_unlock(&parent->d_inode->i_mutex);
+			parent = child;
+			mutex_lock(&parent->d_inode->i_mutex);
+			continue;
+		}
+		__debugfs_remove(child, parent);
+		if (parent->d_subdirs.next == &child->d_u.d_child) {
+			/*
+			 * Avoid infinite loop if we fail to remove
+			 * one dentry.
+			 */
+			mutex_unlock(&parent->d_inode->i_mutex);
+			break;
+		}
+		simple_release_fs(&debugfs_mount, &debugfs_mount_count);
+	}
+
+	parent = dentry->d_parent;
+	mutex_lock(&parent->d_inode->i_mutex);
+	__debugfs_remove(dentry, parent);
+	mutex_unlock(&parent->d_inode->i_mutex);
+	simple_release_fs(&debugfs_mount, &debugfs_mount_count);
+}
+EXPORT_SYMBOL_GPL(debugfs_remove_recursive);
+
+/**
  * debugfs_rename - rename a file/directory in the debugfs filesystem
  * @old_dir: a pointer to the parent dentry for the renamed object. This
  *          should be a directory dentry.
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 6149e4b..efef715 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -401,7 +401,7 @@
 	disk->dev.parent = disk->driverfs_dev;
 	disk->dev.devt = MKDEV(disk->major, disk->first_minor);
 
-	strlcpy(disk->dev.bus_id, disk->disk_name, KOBJ_NAME_LEN);
+	strlcpy(disk->dev.bus_id, disk->disk_name, BUS_ID_SIZE);
 	/* ewww... some of these buggers have / in the name... */
 	s = strchr(disk->dev.bus_id, '/');
 	if (s)
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 8c0e4b9..c1a7efb 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -398,6 +398,43 @@
 }
 
 /**
+ *	__sysfs_add_one - add sysfs_dirent to parent without warning
+ *	@acxt: addrm context to use
+ *	@sd: sysfs_dirent to be added
+ *
+ *	Get @acxt->parent_sd and set sd->s_parent to it and increment
+ *	nlink of parent inode if @sd is a directory and link into the
+ *	children list of the parent.
+ *
+ *	This function should be called between calls to
+ *	sysfs_addrm_start() and sysfs_addrm_finish() and should be
+ *	passed the same @acxt as passed to sysfs_addrm_start().
+ *
+ *	LOCKING:
+ *	Determined by sysfs_addrm_start().
+ *
+ *	RETURNS:
+ *	0 on success, -EEXIST if entry with the given name already
+ *	exists.
+ */
+int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
+{
+	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
+		return -EEXIST;
+
+	sd->s_parent = sysfs_get(acxt->parent_sd);
+
+	if (sysfs_type(sd) == SYSFS_DIR && acxt->parent_inode)
+		inc_nlink(acxt->parent_inode);
+
+	acxt->cnt++;
+
+	sysfs_link_sibling(sd);
+
+	return 0;
+}
+
+/**
  *	sysfs_add_one - add sysfs_dirent to parent
  *	@acxt: addrm context to use
  *	@sd: sysfs_dirent to be added
@@ -419,19 +456,15 @@
  */
 int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 {
-	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
-		return -EEXIST;
+	int ret;
 
-	sd->s_parent = sysfs_get(acxt->parent_sd);
-
-	if (sysfs_type(sd) == SYSFS_DIR && acxt->parent_inode)
-		inc_nlink(acxt->parent_inode);
-
-	acxt->cnt++;
-
-	sysfs_link_sibling(sd);
-
-	return 0;
+	ret = __sysfs_add_one(acxt, sd);
+	if (ret == -EEXIST) {
+		printk(KERN_WARNING "sysfs: duplicate filename '%s' "
+		       "can not be created\n", sd->s_name);
+		WARN_ON(1);
+	}
+	return ret;
 }
 
 /**
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index e7735f6..3f07893 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -14,6 +14,7 @@
 #include <linux/kobject.h>
 #include <linux/kallsyms.h>
 #include <linux/slab.h>
+#include <linux/fsnotify.h>
 #include <linux/namei.h>
 #include <linux/poll.h>
 #include <linux/list.h>
@@ -585,9 +586,11 @@
 
 	newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
 	newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
-	rc = notify_change(victim, &newattrs);
+	newattrs.ia_ctime = current_fs_time(inode->i_sb);
+	rc = sysfs_setattr(victim, &newattrs);
 
 	if (rc == 0) {
+		fsnotify_change(victim, newattrs.ia_valid);
 		mutex_lock(&sysfs_mutex);
 		victim_sd->s_mode = newattrs.ia_mode;
 		mutex_unlock(&sysfs_mutex);
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index 817f596..a3ba217 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -19,13 +19,8 @@
 
 #include "sysfs.h"
 
-/**
- *	sysfs_create_link - create symlink between two objects.
- *	@kobj:	object whose directory we're creating the link in.
- *	@target:	object we're pointing to.
- *	@name:		name of the symlink.
- */
-int sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name)
+static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
+				const char *name, int warn)
 {
 	struct sysfs_dirent *parent_sd = NULL;
 	struct sysfs_dirent *target_sd = NULL;
@@ -65,7 +60,10 @@
 	target_sd = NULL;	/* reference is now owned by the symlink */
 
 	sysfs_addrm_start(&acxt, parent_sd);
-	error = sysfs_add_one(&acxt, sd);
+	if (warn)
+		error = sysfs_add_one(&acxt, sd);
+	else
+		error = __sysfs_add_one(&acxt, sd);
 	sysfs_addrm_finish(&acxt);
 
 	if (error)
@@ -80,6 +78,33 @@
 }
 
 /**
+ *	sysfs_create_link - create symlink between two objects.
+ *	@kobj:	object whose directory we're creating the link in.
+ *	@target:	object we're pointing to.
+ *	@name:		name of the symlink.
+ */
+int sysfs_create_link(struct kobject *kobj, struct kobject *target,
+		      const char *name)
+{
+	return sysfs_do_create_link(kobj, target, name, 1);
+}
+
+/**
+ *	sysfs_create_link_nowarn - create symlink between two objects.
+ *	@kobj:	object whose directory we're creating the link in.
+ *	@target:	object we're pointing to.
+ *	@name:		name of the symlink.
+ *
+ *	This function does the same as sysf_create_link(), but it
+ *	doesn't warn if the link already exists.
+ */
+int sysfs_create_link_nowarn(struct kobject *kobj, struct kobject *target,
+			     const char *name)
+{
+	return sysfs_do_create_link(kobj, target, name, 0);
+}
+
+/**
  *	sysfs_remove_link - remove symlink in object's directory.
  *	@kobj:	object we're acting for.
  *	@name:	name of the symlink to remove.
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index ce4e15f8..a5db496 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -107,6 +107,7 @@
 void sysfs_put_active_two(struct sysfs_dirent *sd);
 void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
 		       struct sysfs_dirent *parent_sd);
+int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
 int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
 void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd);
 void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt);
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 32755cd..e1a6c04 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -44,6 +44,7 @@
 				      const char *dest);
 
 void debugfs_remove(struct dentry *dentry);
+void debugfs_remove_recursive(struct dentry *dentry);
 
 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
                 struct dentry *new_dir, const char *new_name);
@@ -101,6 +102,9 @@
 static inline void debugfs_remove(struct dentry *dentry)
 { }
 
+static inline void debugfs_remove_recursive(struct dentry *dentry)
+{ }
+
 static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
                 struct dentry *new_dir, char *new_name)
 {
diff --git a/include/linux/device.h b/include/linux/device.h
index f71a78d..d24a47f 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -16,6 +16,7 @@
 #include <linux/kobject.h>
 #include <linux/klist.h>
 #include <linux/list.h>
+#include <linux/lockdep.h>
 #include <linux/compiler.h>
 #include <linux/types.h>
 #include <linux/module.h>
@@ -24,17 +25,13 @@
 #include <asm/atomic.h>
 #include <asm/device.h>
 
-#define DEVICE_NAME_SIZE	50
-/* DEVICE_NAME_HALF is really less than half to accommodate slop */
-#define DEVICE_NAME_HALF	__stringify(20)
-#define DEVICE_ID_SIZE		32
-#define BUS_ID_SIZE		KOBJ_NAME_LEN
-
+#define BUS_ID_SIZE		20
 
 struct device;
 struct device_driver;
 struct driver_private;
 struct class;
+struct class_private;
 struct bus_type;
 struct bus_type_private;
 
@@ -186,13 +183,9 @@
 	const char		*name;
 	struct module		*owner;
 
-	struct kset		subsys;
-	struct list_head	devices;
-	struct list_head	interfaces;
-	struct kset		class_dirs;
-	struct semaphore	sem; /* locks children, devices, interfaces */
 	struct class_attribute		*class_attrs;
 	struct device_attribute		*dev_attrs;
+	struct kobject			*dev_kobj;
 
 	int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
 
@@ -203,13 +196,28 @@
 	int (*resume)(struct device *dev);
 
 	struct pm_ops *pm;
+	struct class_private *p;
 };
 
-extern int __must_check class_register(struct class *class);
+extern struct kobject *sysfs_dev_block_kobj;
+extern struct kobject *sysfs_dev_char_kobj;
+extern int __must_check __class_register(struct class *class,
+					 struct lock_class_key *key);
 extern void class_unregister(struct class *class);
-extern int class_for_each_device(struct class *class, void *data,
+
+/* This is a #define to keep the compiler from merging different
+ * instances of the __key variable */
+#define class_register(class)			\
+({						\
+	static struct lock_class_key __key;	\
+	__class_register(class, &__key);	\
+})
+
+extern int class_for_each_device(struct class *class, struct device *start,
+				 void *data,
 				 int (*fn)(struct device *dev, void *data));
-extern struct device *class_find_device(struct class *class, void *data,
+extern struct device *class_find_device(struct class *class,
+					struct device *start, void *data,
 					int (*match)(struct device *, void *));
 
 struct class_attribute {
@@ -237,9 +245,19 @@
 extern int __must_check class_interface_register(struct class_interface *);
 extern void class_interface_unregister(struct class_interface *);
 
-extern struct class *class_create(struct module *owner, const char *name);
+extern struct class * __must_check __class_create(struct module *owner,
+						  const char *name,
+						  struct lock_class_key *key);
 extern void class_destroy(struct class *cls);
 
+/* This is a #define to keep the compiler from merging different
+ * instances of the __key variable */
+#define class_create(owner, name)		\
+({						\
+	static struct lock_class_key __key;	\
+	__class_create(owner, name, &__key);	\
+})
+
 /*
  * The type of device, "struct device" is embedded in. A class
  * or bus can contain devices of different types
@@ -468,14 +486,10 @@
 					  const char *fmt,
 					  va_list vargs);
 extern struct device *device_create(struct class *cls, struct device *parent,
-				    dev_t devt, const char *fmt, ...)
-				    __attribute__((format(printf, 4, 5)));
-extern struct device *device_create_drvdata(struct class *cls,
-					    struct device *parent,
-					    dev_t devt,
-					    void *drvdata,
-					    const char *fmt, ...)
+				    dev_t devt, void *drvdata,
+				    const char *fmt, ...)
 				    __attribute__((format(printf, 5, 6)));
+#define device_create_drvdata	device_create
 extern void device_destroy(struct class *cls, dev_t devt);
 
 /*
diff --git a/include/linux/eisa.h b/include/linux/eisa.h
index fe806b6..e61c0be 100644
--- a/include/linux/eisa.h
+++ b/include/linux/eisa.h
@@ -40,7 +40,7 @@
 	u64                   dma_mask;
 	struct device         dev; /* generic device */
 #ifdef CONFIG_EISA_NAMES
-	char		      pretty_name[DEVICE_NAME_SIZE];
+	char		      pretty_name[50];
 #endif
 };
 
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 39e709f..60f0d41 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -26,7 +26,6 @@
 #include <linux/wait.h>
 #include <asm/atomic.h>
 
-#define KOBJ_NAME_LEN			20
 #define UEVENT_HELPER_PATH_LEN		256
 #define UEVENT_NUM_ENVP			32	/* number of env pointers */
 #define UEVENT_BUFFER_SIZE		2048	/* buffer for the variables */
@@ -59,12 +58,12 @@
 
 struct kobject {
 	const char		*name;
-	struct kref		kref;
 	struct list_head	entry;
 	struct kobject		*parent;
 	struct kset		*kset;
 	struct kobj_type	*ktype;
 	struct sysfs_dirent	*sd;
+	struct kref		kref;
 	unsigned int state_initialized:1;
 	unsigned int state_in_sysfs:1;
 	unsigned int state_add_uevent_sent:1;
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index a9fae03..9c1d954 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -189,7 +189,7 @@
 */
 
 struct map_info {
-	char *name;
+	const char *name;
 	unsigned long size;
 	resource_size_t phys;
 #define NO_XIP (-1UL)
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 245f909..8b5d491 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -121,7 +121,7 @@
 	u_int32_t oobavail;  // Available OOB bytes per block
 
 	// Kernel-only stuff starts here.
-	char *name;
+	const char *name;
 	int index;
 
 	/* ecc layout structure pointer - read only ! */
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 387e428..b9a76c9 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -733,7 +733,7 @@
 	 * controller_data goes to spi_device.controller_data,
 	 * irq is copied too
 	 */
-	char		modalias[KOBJ_NAME_LEN];
+	char		modalias[32];
 	const void	*platform_data;
 	void		*controller_data;
 	int		irq;
diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h
index f2767bc..f395bb3 100644
--- a/include/linux/sysdev.h
+++ b/include/linux/sysdev.h
@@ -99,8 +99,9 @@
 
 struct sysdev_attribute { 
 	struct attribute	attr;
-	ssize_t (*show)(struct sys_device *, char *);
-	ssize_t (*store)(struct sys_device *, const char *, size_t);
+	ssize_t (*show)(struct sys_device *, struct sysdev_attribute *, char *);
+	ssize_t (*store)(struct sys_device *, struct sysdev_attribute *,
+			 const char *, size_t);
 };
 
 
@@ -118,4 +119,38 @@
 extern int sysdev_create_file(struct sys_device *, struct sysdev_attribute *);
 extern void sysdev_remove_file(struct sys_device *, struct sysdev_attribute *);
 
+struct sysdev_ext_attribute {
+	struct sysdev_attribute attr;
+	void *var;
+};
+
+/*
+ * Support for simple variable sysdev attributes.
+ * The pointer to the variable is stored in a sysdev_ext_attribute
+ */
+
+/* Add more types as needed */
+
+extern ssize_t sysdev_show_ulong(struct sys_device *, struct sysdev_attribute *,
+				char *);
+extern ssize_t sysdev_store_ulong(struct sys_device *,
+			struct sysdev_attribute *, const char *, size_t);
+extern ssize_t sysdev_show_int(struct sys_device *, struct sysdev_attribute *,
+				char *);
+extern ssize_t sysdev_store_int(struct sys_device *,
+			struct sysdev_attribute *, const char *, size_t);
+
+#define _SYSDEV_ULONG_ATTR(_name, _mode, _var)				\
+	{ _SYSDEV_ATTR(_name, _mode, sysdev_show_ulong, sysdev_store_ulong), \
+	  &(_var) }
+#define SYSDEV_ULONG_ATTR(_name, _mode, _var)			\
+	struct sysdev_ext_attribute attr_##_name = 		\
+		_SYSDEV_ULONG_ATTR(_name, _mode, _var);
+#define _SYSDEV_INT_ATTR(_name, _mode, _var)				\
+	{ _SYSDEV_ATTR(_name, _mode, sysdev_show_int, sysdev_store_int), \
+	  &(_var) }
+#define SYSDEV_INT_ATTR(_name, _mode, _var)			\
+	struct sysdev_ext_attribute attr_##_name = 		\
+		_SYSDEV_INT_ATTR(_name, _mode, _var);
+
 #endif /* _SYSDEV_H_ */
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 7858eac..37fa241 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -101,6 +101,9 @@
 
 int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target,
 				   const char *name);
+int __must_check sysfs_create_link_nowarn(struct kobject *kobj,
+					  struct kobject *target,
+					  const char *name);
 void sysfs_remove_link(struct kobject *kobj, const char *name);
 
 int __must_check sysfs_create_group(struct kobject *kobj,
@@ -180,6 +183,13 @@
 	return 0;
 }
 
+static inline int sysfs_create_link_nowarn(struct kobject *kobj,
+					   struct kobject *target,
+					   const char *name)
+{
+	return 0;
+}
+
 static inline void sysfs_remove_link(struct kobject *kobj, const char *name)
 {
 }
diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
index 973386d..cdf338d 100644
--- a/include/linux/uio_driver.h
+++ b/include/linux/uio_driver.h
@@ -36,7 +36,7 @@
 	struct uio_map		*map;
 };
 
-#define MAX_UIO_MAPS 	5
+#define MAX_UIO_MAPS	5
 
 struct uio_device;
 
@@ -53,6 +53,7 @@
  * @mmap:		mmap operation for this uio device
  * @open:		open operation for this uio device
  * @release:		release operation for this uio device
+ * @irqcontrol:		disable/enable irqs when 0/1 is written to /dev/uioX
  */
 struct uio_info {
 	struct uio_device	*uio_dev;
@@ -66,6 +67,7 @@
 	int (*mmap)(struct uio_info *info, struct vm_area_struct *vma);
 	int (*open)(struct uio_info *info, struct inode *inode);
 	int (*release)(struct uio_info *info, struct inode *inode);
+	int (*irqcontrol)(struct uio_info *info, s32 irq_on);
 };
 
 extern int __must_check
@@ -80,11 +82,11 @@
 extern void uio_unregister_device(struct uio_info *info);
 extern void uio_event_notify(struct uio_info *info);
 
-/* defines for uio_device->irq */
+/* defines for uio_info->irq */
 #define UIO_IRQ_CUSTOM	-1
 #define UIO_IRQ_NONE	-2
 
-/* defines for uio_device->memtype */
+/* defines for uio_mem->memtype */
 #define UIO_MEM_NONE	0
 #define UIO_MEM_PHYS	1
 #define UIO_MEM_LOGICAL	2
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 1834fdf..a594bac 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -623,7 +623,7 @@
 	/*
 	 * Optional work queue to be utilized by the transport
 	 */
-	char work_q_name[KOBJ_NAME_LEN];
+	char work_q_name[20];
 	struct workqueue_struct *work_q;
 
 	/*
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 06f72ba..878373c 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -489,9 +489,9 @@
 	u16 npiv_vports_inuse;
 
 	/* work queues for rport state manipulation */
-	char work_q_name[KOBJ_NAME_LEN];
+	char work_q_name[20];
 	struct workqueue_struct *work_q;
-	char devloss_work_q_name[KOBJ_NAME_LEN];
+	char devloss_work_q_name[20];
 	struct workqueue_struct *devloss_work_q;
 };
 
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index f5444e0..8b6c91d 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -198,7 +198,7 @@
 	atomic_t nr_scans;
 	struct mutex mutex;
 	struct workqueue_struct *scan_workq;
-	char scan_workq_name[KOBJ_NAME_LEN];
+	char scan_workq_name[20];
 };
 
 extern void iscsi_host_for_each_session(struct Scsi_Host *shost,
diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c
index 092e4c6..a56f629 100644
--- a/kernel/rtmutex-tester.c
+++ b/kernel/rtmutex-tester.c
@@ -297,8 +297,8 @@
  *
  * opcode:data
  */
-static ssize_t sysfs_test_command(struct sys_device *dev, const char *buf,
-				  size_t count)
+static ssize_t sysfs_test_command(struct sys_device *dev, struct sysdev_attribute *attr,
+				  const char *buf, size_t count)
 {
 	struct sched_param schedpar;
 	struct test_thread_data *td;
@@ -360,7 +360,8 @@
  * @dev:	thread to query
  * @buf:	char buffer to be filled with thread status info
  */
-static ssize_t sysfs_test_status(struct sys_device *dev, char *buf)
+static ssize_t sysfs_test_status(struct sys_device *dev, struct sysdev_attribute *attr,
+				 char *buf)
 {
 	struct test_thread_data *td;
 	struct task_struct *tsk;
diff --git a/kernel/sched.c b/kernel/sched.c
index 99e6d85..b1104ea 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7737,11 +7737,13 @@
 }
 
 #ifdef CONFIG_SCHED_MC
-static ssize_t sched_mc_power_savings_show(struct sys_device *dev, char *page)
+static ssize_t sched_mc_power_savings_show(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *page)
 {
 	return sprintf(page, "%u\n", sched_mc_power_savings);
 }
 static ssize_t sched_mc_power_savings_store(struct sys_device *dev,
+					    struct sysdev_attribute *attr,
 					    const char *buf, size_t count)
 {
 	return sched_power_savings_store(buf, count, 0);
@@ -7751,11 +7753,13 @@
 #endif
 
 #ifdef CONFIG_SCHED_SMT
-static ssize_t sched_smt_power_savings_show(struct sys_device *dev, char *page)
+static ssize_t sched_smt_power_savings_show(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *page)
 {
 	return sprintf(page, "%u\n", sched_smt_power_savings);
 }
 static ssize_t sched_smt_power_savings_store(struct sys_device *dev,
+					     struct sysdev_attribute *attr,
 					     const char *buf, size_t count)
 {
 	return sched_power_savings_store(buf, count, 1);
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index dadde53..b1c2da8 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -376,7 +376,8 @@
  * Provides sysfs interface for listing current clocksource.
  */
 static ssize_t
-sysfs_show_current_clocksources(struct sys_device *dev, char *buf)
+sysfs_show_current_clocksources(struct sys_device *dev,
+				struct sysdev_attribute *attr, char *buf)
 {
 	ssize_t count = 0;
 
@@ -397,6 +398,7 @@
  * clocksource selction.
  */
 static ssize_t sysfs_override_clocksource(struct sys_device *dev,
+					  struct sysdev_attribute *attr,
 					  const char *buf, size_t count)
 {
 	struct clocksource *ovr = NULL;
@@ -449,7 +451,9 @@
  * Provides sysfs interface for listing registered clocksources
  */
 static ssize_t
-sysfs_show_available_clocksources(struct sys_device *dev, char *buf)
+sysfs_show_available_clocksources(struct sys_device *dev,
+				  struct sysdev_attribute *attr,
+				  char *buf)
 {
 	struct clocksource *src;
 	ssize_t count = 0;
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index df27132..ba106db 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -74,6 +74,9 @@
 	  debugging files into.  Enable this option to be able to read and
 	  write to these files.
 
+	  For detailed documentation on the debugfs API, see
+	  Documentation/DocBook/filesystems.
+
 	  If unsure, say N.
 
 config HEADERS_CHECK
diff --git a/lib/kobject.c b/lib/kobject.c
index dcade05..7444015 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -216,13 +216,19 @@
 static int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
 				  va_list vargs)
 {
-	/* Free the old name, if necessary. */
-	kfree(kobj->name);
+	const char *old_name = kobj->name;
+	char *s;
 
 	kobj->name = kvasprintf(GFP_KERNEL, fmt, vargs);
 	if (!kobj->name)
 		return -ENOMEM;
 
+	/* ewww... some of these buggers have '/' in the name ... */
+	s = strchr(kobj->name, '/');
+	if (s)
+		s[0] = '!';
+
+	kfree(old_name);
 	return 0;
 }
 
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 2fa545a..9f8d599 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -245,7 +245,8 @@
 		if (retval)
 			goto exit;
 
-		call_usermodehelper(argv[0], argv, env->envp, UMH_WAIT_EXEC);
+		retval = call_usermodehelper(argv[0], argv,
+					     env->envp, UMH_WAIT_EXEC);
 	}
 
 exit:
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 844ca5f..c85bf8f 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -398,10 +398,6 @@
 		if (device_create_file(dev, bt_attrs[i]) < 0)
 			BT_ERR("Failed to create device attribute");
 
-	if (sysfs_create_link(&bt_class->subsys.kobj,
-				&dev->kobj, kobject_name(&dev->kobj)) < 0)
-		BT_ERR("Failed to create class symlink");
-
 	return 0;
 }
 
@@ -409,9 +405,6 @@
 {
 	BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
 
-	sysfs_remove_link(&bt_class->subsys.kobj,
-					kobject_name(&hdev->dev.kobj));
-
 	device_del(&hdev->dev);
 }
 
diff --git a/samples/firmware_class/firmware_sample_firmware_class.c b/samples/firmware_class/firmware_sample_firmware_class.c
index 9392116..e6cf7a4 100644
--- a/samples/firmware_class/firmware_sample_firmware_class.c
+++ b/samples/firmware_class/firmware_sample_firmware_class.c
@@ -124,7 +124,7 @@
 	class_dev->class_id[BUS_ID_SIZE-1] = '\0';
 	class_dev->dev = device;
 
-	class_dev->class = &firmware_class,
+	class_dev->class = &firmware_class;
 	class_set_devdata(class_dev, fw_priv);
 	retval = class_device_register(class_dev);
 	if (retval) {
diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c
index b0a1b4f..7395c0b 100644
--- a/samples/kobject/kset-example.c
+++ b/samples/kobject/kset-example.c
@@ -211,7 +211,7 @@
 	 */
 	retval = kobject_init_and_add(&foo->kobj, &foo_ktype, NULL, "%s", name);
 	if (retval) {
-		kfree(foo);
+		kobject_put(&foo->kobj);
 		return NULL;
 	}
 
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 37d5c36..1fcaf32 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -340,11 +340,18 @@
 }
 
 /* looks like: "pnp:dD" */
-static int do_pnp_entry(const char *filename,
-			struct pnp_device_id *id, char *alias)
+static void do_pnp_device_entry(void *symval, unsigned long size,
+				struct module *mod)
 {
-	sprintf(alias, "pnp:d%s*", id->id);
-	return 1;
+	const unsigned long id_size = sizeof(struct pnp_device_id);
+	const struct pnp_device_id *id = symval;
+
+	device_id_check(mod->name, "pnp", size, id_size, symval);
+
+	buf_printf(&mod->dev_table_buf,
+		   "MODULE_ALIAS(\"pnp:d%s*\");\n", id->id);
+	buf_printf(&mod->dev_table_buf,
+		   "MODULE_ALIAS(\"acpi*:%s:*\");\n", id->id);
 }
 
 /* looks like: "pnp:dD" for every device of the card */
@@ -388,9 +395,12 @@
 			}
 
 			/* add an individual alias for every device entry */
-			if (!dup)
+			if (!dup) {
 				buf_printf(&mod->dev_table_buf,
 					   "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
+				buf_printf(&mod->dev_table_buf,
+					   "MODULE_ALIAS(\"acpi*:%s:*\");\n", id);
+			}
 		}
 	}
 }
@@ -701,9 +711,7 @@
 			 sizeof(struct acpi_device_id), "acpi",
 			 do_acpi_entry, mod);
 	else if (sym_is(symname, "__mod_pnp_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct pnp_device_id), "pnp",
-			 do_pnp_entry, mod);
+		do_pnp_device_entry(symval, sym->st_size, mod);
 	else if (sym_is(symname, "__mod_pnp_card_device_table"))
 		do_pnp_card_entries(symval, sym->st_size, mod);
 	else if (sym_is(symname, "__mod_pcmcia_device_table"))
diff --git a/sound/core/init.c b/sound/core/init.c
index 5c254d4..df46bbc 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -548,8 +548,9 @@
 	snd_assert(card != NULL, return -EINVAL);
 #ifndef CONFIG_SYSFS_DEPRECATED
 	if (!card->card_dev) {
-		card->card_dev = device_create(sound_class, card->dev, 0,
-					       "card%i", card->number);
+		card->card_dev = device_create_drvdata(sound_class, card->dev,
+						       MKDEV(0, 0), NULL,
+						       "card%i", card->number);
 		if (IS_ERR(card->card_dev))
 			card->card_dev = NULL;
 	}
diff --git a/sound/oss/soundcard.c b/sound/oss/soundcard.c
index a9c23b2..7d89c08 100644
--- a/sound/oss/soundcard.c
+++ b/sound/oss/soundcard.c
@@ -560,17 +560,19 @@
 	sound_dmap_flag = (dmabuf > 0 ? 1 : 0);
 
 	for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
-		device_create(sound_class, NULL,
-			      MKDEV(SOUND_MAJOR, dev_list[i].minor),
-			      "%s", dev_list[i].name);
+		device_create_drvdata(sound_class, NULL,
+				      MKDEV(SOUND_MAJOR, dev_list[i].minor),
+				      NULL, "%s", dev_list[i].name);
 
 		if (!dev_list[i].num)
 			continue;
 
 		for (j = 1; j < *dev_list[i].num; j++)
-			device_create(sound_class, NULL,
-				      MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)),
-				      "%s%d", dev_list[i].name, j);
+			device_create_drvdata(sound_class, NULL,
+					      MKDEV(SOUND_MAJOR,
+						    dev_list[i].minor + (j*0x10)),
+					      NULL,
+					      "%s%d", dev_list[i].name, j);
 	}
 
 	if (sound_nblocks >= 1024)
diff --git a/sound/sound_core.c b/sound/sound_core.c
index dcfc1d5..1b04259 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -171,8 +171,9 @@
 	else
 		sprintf(s->name, "sound/%s%d", name, r / SOUND_STEP);
 
-	device_create(sound_class, dev, MKDEV(SOUND_MAJOR, s->unit_minor),
-		      s->name+6);
+	device_create_drvdata(sound_class, dev,
+			      MKDEV(SOUND_MAJOR, s->unit_minor),
+			      NULL, s->name+6);
 	return r;
 
  fail: