Merge tag 'driver-core-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here's the big driver core merge for 3.11-rc1
Lots of little things, and larger firmware subsystem updates, all
described in the shortlog. Nice thing here is that we finally get rid
of CONFIG_HOTPLUG, after 10+ years, thanks to Stephen Rohtwell (it had
been always on for a number of kernel releases, now it's just
removed)"
* tag 'driver-core-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (27 commits)
driver core: device.h: fix doc compilation warnings
firmware loader: fix another compile warning with PM_SLEEP unset
build some drivers only when compile-testing
firmware loader: fix compile warning with PM_SLEEP set
kobject: sanitize argument for format string
sysfs_notify is only possible on file attributes
firmware loader: simplify holding module for request_firmware
firmware loader: don't export cache_firmware and uncache_firmware
drivers/base: Use attribute groups to create sysfs memory files
firmware loader: fix compile warning
firmware loader: fix build failure with !CONFIG_FW_LOADER_USER_HELPER
Documentation: Updated broken link in HOWTO
Finally eradicate CONFIG_HOTPLUG
driver core: firmware loader: kill FW_ACTION_NOHOTPLUG requests before suspend
driver core: firmware loader: don't cache FW_ACTION_NOHOTPLUG firmware
Documentation: Tidy up some drivers/base/core.c kerneldoc content.
platform_device: use a macro instead of platform_driver_register
firmware: move EXPORT_SYMBOL annotations
firmware: Avoid deadlock of usermodehelper lock at shutdown
dell_rbu: Select CONFIG_FW_LOADER_USER_HELPER explicitly
...
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 1ce5ae3..5210a51 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -64,7 +64,6 @@
Writing a non-zero value to this attribute will
force a rescan of all PCI buses in the system, and
re-discover previously removed devices.
- Depends on CONFIG_HOTPLUG.
What: /sys/bus/pci/devices/.../msi_irqs/
Date: September, 2011
@@ -90,7 +89,6 @@
Description:
Writing a non-zero value to this attribute will
hot-remove the PCI device and any of its children.
- Depends on CONFIG_HOTPLUG.
What: /sys/bus/pci/devices/.../pci_bus/.../rescan
Date: May 2011
@@ -99,7 +97,7 @@
Writing a non-zero value to this attribute will
force a rescan of the bus and all child buses,
and re-discover devices removed earlier from this
- part of the device tree. Depends on CONFIG_HOTPLUG.
+ part of the device tree.
What: /sys/bus/pci/devices/.../rescan
Date: January 2009
@@ -109,7 +107,6 @@
force a rescan of the device's parent bus and all
child buses, and re-discover devices removed earlier
from this part of the device tree.
- Depends on CONFIG_HOTPLUG.
What: /sys/bus/pci/devices/.../reset
Date: July 2009
diff --git a/Documentation/HOWTO b/Documentation/HOWTO
index a9f288f..27faae3 100644
--- a/Documentation/HOWTO
+++ b/Documentation/HOWTO
@@ -112,7 +112,7 @@
Other excellent descriptions of how to create patches properly are:
"The Perfect Patch"
- http://userweb.kernel.org/~akpm/stuff/tpp.txt
+ http://kerneltrap.org/node/3737
"Linux kernel patch submission format"
http://linux.yyz.us/patch-format.html
diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist
index dc0e332..2b7e32d 100644
--- a/Documentation/SubmitChecklist
+++ b/Documentation/SubmitChecklist
@@ -105,5 +105,5 @@
same time, just various/random combinations of them]:
CONFIG_SMP, CONFIG_SYSFS, CONFIG_PROC_FS, CONFIG_INPUT, CONFIG_PCI,
- CONFIG_BLOCK, CONFIG_PM, CONFIG_HOTPLUG, CONFIG_MAGIC_SYSRQ,
+ CONFIG_BLOCK, CONFIG_PM, CONFIG_MAGIC_SYSRQ,
CONFIG_NET, CONFIG_INET=n (but latter with CONFIG_NET=y)
diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt
index 9f40135..0efd1b9 100644
--- a/Documentation/cpu-hotplug.txt
+++ b/Documentation/cpu-hotplug.txt
@@ -128,7 +128,7 @@
"Processor type and Features" -> Support for Hotpluggable CPUs
-Make sure that you have CONFIG_HOTPLUG, and CONFIG_SMP turned on as well.
+Make sure that you have CONFIG_SMP turned on as well.
You would need to enable CONFIG_HOTPLUG_CPU for SMP suspend/resume support
as well.
diff --git a/Documentation/hwmon/submitting-patches b/Documentation/hwmon/submitting-patches
index 843751c..4628646 100644
--- a/Documentation/hwmon/submitting-patches
+++ b/Documentation/hwmon/submitting-patches
@@ -27,8 +27,7 @@
explicitly below the patch header.
* If your patch (or the driver) is affected by configuration options such as
- CONFIG_SMP or CONFIG_HOTPLUG, make sure it compiles for all configuration
- variants.
+ CONFIG_SMP, make sure it compiles for all configuration variants.
2. Adding functionality to existing drivers
diff --git a/Documentation/kbuild/kconfig.txt b/Documentation/kbuild/kconfig.txt
index 3f429ed..213859e 100644
--- a/Documentation/kbuild/kconfig.txt
+++ b/Documentation/kbuild/kconfig.txt
@@ -165,7 +165,7 @@
Example:
/hotplug
This lists all config symbols that contain "hotplug",
- e.g., HOTPLUG, HOTPLUG_CPU, MEMORY_HOTPLUG.
+ e.g., HOTPLUG_CPU, MEMORY_HOTPLUG.
For search help, enter / followed TAB-TAB-TAB (to highlight
<Help>) and Enter. This will tell you that you can also use
diff --git a/Documentation/usb/hotplug.txt b/Documentation/usb/hotplug.txt
index 4c94571..6424b13 100644
--- a/Documentation/usb/hotplug.txt
+++ b/Documentation/usb/hotplug.txt
@@ -33,9 +33,9 @@
KERNEL HOTPLUG HELPER (/sbin/hotplug)
-When you compile with CONFIG_HOTPLUG, you get a new kernel parameter:
-/proc/sys/kernel/hotplug, which normally holds the pathname "/sbin/hotplug".
-That parameter names a program which the kernel may invoke at various times.
+There is a kernel parameter: /proc/sys/kernel/hotplug, which normally
+holds the pathname "/sbin/hotplug". That parameter names a program
+which the kernel may invoke at various times.
The /sbin/hotplug program can be invoked by any subsystem as part of its
reaction to a configuration change, from a thread in that subsystem.
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 136f263..b519015 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1552,7 +1552,7 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
- depends on SMP && HOTPLUG
+ depends on SMP
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 1e9be5d..85c3fb6 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -288,24 +288,16 @@
if (strcmp(".ARM.exidx.init.text", secname) == 0)
maps[ARM_SEC_INIT].unw_sec = s;
- else if (strcmp(".ARM.exidx.devinit.text", secname) == 0)
- maps[ARM_SEC_DEVINIT].unw_sec = s;
else if (strcmp(".ARM.exidx", secname) == 0)
maps[ARM_SEC_CORE].unw_sec = s;
else if (strcmp(".ARM.exidx.exit.text", secname) == 0)
maps[ARM_SEC_EXIT].unw_sec = s;
- else if (strcmp(".ARM.exidx.devexit.text", secname) == 0)
- maps[ARM_SEC_DEVEXIT].unw_sec = s;
else if (strcmp(".init.text", secname) == 0)
maps[ARM_SEC_INIT].txt_sec = s;
- else if (strcmp(".devinit.text", secname) == 0)
- maps[ARM_SEC_DEVINIT].txt_sec = s;
else if (strcmp(".text", secname) == 0)
maps[ARM_SEC_CORE].txt_sec = s;
else if (strcmp(".exit.text", secname) == 0)
maps[ARM_SEC_EXIT].txt_sec = s;
- else if (strcmp(".devexit.text", secname) == 0)
- maps[ARM_SEC_DEVEXIT].txt_sec = s;
}
for (i = 0; i < ARM_SEC_MAX; i++)
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index a871b8e..fa25e4e 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -70,10 +70,6 @@
ARM_EXIT_DISCARD(EXIT_TEXT)
ARM_EXIT_DISCARD(EXIT_DATA)
EXIT_CALL
-#ifndef CONFIG_HOTPLUG
- *(.ARM.exidx.devexit.text)
- *(.ARM.extab.devexit.text)
-#endif
#ifndef CONFIG_MMU
*(.fixup)
*(__ex_table)
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index 73a2d90..30e1ebe 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -235,7 +235,6 @@
config IXP4XX_NPE
tristate "IXP4xx Network Processor Engine support"
select FW_LOADER
- select HOTPLUG
help
This driver supports IXP4xx built-in network coprocessors
and is automatically selected by Ethernet and HSS drivers.
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index a117652..b573827 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -253,7 +253,7 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
- depends on SMP && HOTPLUG
+ depends on SMP
default y
config BF_REV_MIN
diff --git a/arch/cris/arch-v32/drivers/Kconfig b/arch/cris/arch-v32/drivers/Kconfig
index c55971a..ab725ed 100644
--- a/arch/cris/arch-v32/drivers/Kconfig
+++ b/arch/cris/arch-v32/drivers/Kconfig
@@ -617,7 +617,6 @@
config ETRAX_CARDBUS
bool "Cardbus support"
depends on ETRAX_ARCH_V32
- select HOTPLUG
help
Enabled the ETRAX Cardbus driver.
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 1a2b774..5a768ad 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -376,7 +376,6 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP
- select HOTPLUG
default n
---help---
Say Y here to experiment with turning CPUs off and on. CPUs
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 7a58ab9..e433b90 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -962,7 +962,7 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
- depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
+ depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
help
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 6507dab..2a2aea5 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -254,7 +254,6 @@
config HOTPLUG_CPU
bool
default y if SMP
- select HOTPLUG
config ARCH_SELECT_MEMORY_MODEL
def_bool y
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c33e3ad..508e3fe 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -341,7 +341,7 @@
config HOTPLUG_CPU
bool "Support for enabling/disabling CPUs"
- depends on SMP && HOTPLUG && (PPC_PSERIES || \
+ depends on SMP && (PPC_PSERIES || \
PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
---help---
Say Y here to be able to disable and re-enable individual
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c
index 023ec8a..7df1c5e 100644
--- a/arch/powerpc/mm/tlb_hash64.c
+++ b/arch/powerpc/mm/tlb_hash64.c
@@ -183,8 +183,8 @@
* since 64K pages may overlap with other bridges when using 64K pages
* with 4K HW pages on IO space.
*
- * Because of that usage pattern, it's only available with CONFIG_HOTPLUG
- * and is implemented for small size rather than speed.
+ * Because of that usage pattern, it is implemented for small size rather
+ * than speed.
*/
void __flush_hash_table_range(struct mm_struct *mm, unsigned long start,
unsigned long end)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index da183c5..22f75b5 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -301,7 +301,6 @@
def_bool y
prompt "Support for hot-pluggable CPUs"
depends on SMP
- select HOTPLUG
help
Say Y here to be able to turn CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 8c868cf..1020dd8 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -748,7 +748,7 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
- depends on SMP && HOTPLUG
+ depends on SMP
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 9ac9f16..a00cbd3 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -243,7 +243,6 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SPARC64 && SMP
- select HOTPLUG
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fe120da..c49b4dc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1725,7 +1725,7 @@
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
- depends on SMP && HOTPLUG
+ depends on SMP
---help---
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 07abd9d..5daa259 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -2,7 +2,6 @@
config UEVENT_HELPER_PATH
string "path to uevent helper"
- depends on HOTPLUG
default ""
help
Path to uevent helper program forked by the kernel for
@@ -23,7 +22,6 @@
config DEVTMPFS
bool "Maintain a devtmpfs filesystem to mount at /dev"
- depends on HOTPLUG
help
This creates a tmpfs/ramfs filesystem instance early at bootup.
In this filesystem, the kernel driver core maintains device
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 2499cef..6fdc53d 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -193,12 +193,12 @@
EXPORT_SYMBOL_GPL(device_show_bool);
/**
- * device_release - free device structure.
- * @kobj: device's kobject.
+ * device_release - free device structure.
+ * @kobj: device's kobject.
*
- * This is called once the reference count for the object
- * reaches 0. We forward the call to the device's release
- * method, which should handle actually freeing the structure.
+ * This is called once the reference count for the object
+ * reaches 0. We forward the call to the device's release
+ * method, which should handle actually freeing the structure.
*/
static void device_release(struct kobject *kobj)
{
@@ -1334,8 +1334,8 @@
/**
* device_for_each_child - device child iterator.
* @parent: parent struct device.
- * @data: data for the callback.
* @fn: function to be called for each device.
+ * @data: data for the callback.
*
* Iterate over @parent's child devices, and call @fn for each,
* passing it @data.
@@ -1363,8 +1363,8 @@
/**
* device_find_child - device iterator for locating a particular device.
* @parent: parent struct device
- * @data: Data to pass to match function
* @match: Callback function to check device
+ * @data: Data to pass to match function
*
* This is similar to the device_for_each_child() function above, but it
* returns a reference to a device that is 'found' for later use, as
@@ -1374,6 +1374,8 @@
* if it does. If the callback returns non-zero and a reference to the
* current device can be obtained, this function will return to the caller
* and not iterate over any more devices.
+ *
+ * NOTE: you will need to drop the reference with put_device() after use.
*/
struct device *device_find_child(struct device *parent, void *data,
int (*match)(struct device *dev, void *data))
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 3d48fc8..c377673 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -85,18 +85,21 @@
}
static DEVICE_ATTR(online, 0644, show_online, store_online);
-static void __cpuinit register_cpu_control(struct cpu *cpu)
-{
- device_create_file(&cpu->dev, &dev_attr_online);
-}
+static struct attribute *hotplug_cpu_attrs[] = {
+ &dev_attr_online.attr,
+ NULL
+};
+
+static struct attribute_group hotplug_cpu_attr_group = {
+ .attrs = hotplug_cpu_attrs,
+};
+
void unregister_cpu(struct cpu *cpu)
{
int logical_cpu = cpu->dev.id;
unregister_cpu_under_node(logical_cpu, cpu_to_node(logical_cpu));
- device_remove_file(&cpu->dev, &dev_attr_online);
-
device_unregister(&cpu->dev);
per_cpu(cpu_sys_devices, logical_cpu) = NULL;
return;
@@ -122,11 +125,6 @@
static DEVICE_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
static DEVICE_ATTR(release, S_IWUSR, NULL, cpu_release_store);
#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
-
-#else /* ... !CONFIG_HOTPLUG_CPU */
-static inline void register_cpu_control(struct cpu *cpu)
-{
-}
#endif /* CONFIG_HOTPLUG_CPU */
#ifdef CONFIG_KEXEC
@@ -164,8 +162,35 @@
return rc;
}
static DEVICE_ATTR(crash_notes_size, 0400, show_crash_notes_size, NULL);
+
+static struct attribute *crash_note_cpu_attrs[] = {
+ &dev_attr_crash_notes.attr,
+ &dev_attr_crash_notes_size.attr,
+ NULL
+};
+
+static struct attribute_group crash_note_cpu_attr_group = {
+ .attrs = crash_note_cpu_attrs,
+};
#endif
+static const struct attribute_group *common_cpu_attr_groups[] = {
+#ifdef CONFIG_KEXEC
+ &crash_note_cpu_attr_group,
+#endif
+ NULL
+};
+
+static const struct attribute_group *hotplugable_cpu_attr_groups[] = {
+#ifdef CONFIG_KEXEC
+ &crash_note_cpu_attr_group,
+#endif
+#ifdef CONFIG_HOTPLUG_CPU
+ &hotplug_cpu_attr_group,
+#endif
+ NULL
+};
+
/*
* Print cpu online, possible, present, and system maps
*/
@@ -280,21 +305,15 @@
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
cpu->dev.bus->uevent = arch_cpu_uevent;
#endif
+ cpu->dev.groups = common_cpu_attr_groups;
+ if (cpu->hotpluggable)
+ cpu->dev.groups = hotplugable_cpu_attr_groups;
error = device_register(&cpu->dev);
- if (!error && cpu->hotpluggable)
- register_cpu_control(cpu);
if (!error)
per_cpu(cpu_sys_devices, num) = &cpu->dev;
if (!error)
register_cpu_under_node(num, cpu_to_node(num));
-#ifdef CONFIG_KEXEC
- if (!error)
- error = device_create_file(&cpu->dev, &dev_attr_crash_notes);
- if (!error)
- error = device_create_file(&cpu->dev,
- &dev_attr_crash_notes_size);
-#endif
return error;
}
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 01e2103..a439602 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -27,6 +27,7 @@
#include <linux/pm.h>
#include <linux/suspend.h>
#include <linux/syscore_ops.h>
+#include <linux/reboot.h>
#include <generated/utsrelease.h>
@@ -127,9 +128,11 @@
size_t size;
#ifdef CONFIG_FW_LOADER_USER_HELPER
bool is_paged_buf;
+ bool need_uevent;
struct page **pages;
int nr_pages;
int page_array_size;
+ struct list_head pending_list;
#endif
char fw_id[];
};
@@ -171,6 +174,9 @@
strcpy(buf->fw_id, fw_name);
buf->fwc = fwc;
init_completion(&buf->completion);
+#ifdef CONFIG_FW_LOADER_USER_HELPER
+ INIT_LIST_HEAD(&buf->pending_list);
+#endif
pr_debug("%s: fw-%s buf=%p\n", __func__, fw_name, buf);
@@ -212,18 +218,6 @@
return tmp ? 0 : -ENOMEM;
}
-static struct firmware_buf *fw_lookup_buf(const char *fw_name)
-{
- struct firmware_buf *tmp;
- struct firmware_cache *fwc = &fw_cache;
-
- spin_lock(&fwc->lock);
- tmp = __fw_lookup_buf(fw_name);
- spin_unlock(&fwc->lock);
-
- return tmp;
-}
-
static void __fw_free_buf(struct kref *ref)
{
struct firmware_buf *buf = to_fwbuf(ref);
@@ -446,10 +440,8 @@
return container_of(dev, struct firmware_priv, dev);
}
-static void fw_load_abort(struct firmware_priv *fw_priv)
+static void __fw_load_abort(struct firmware_buf *buf)
{
- struct firmware_buf *buf = fw_priv->buf;
-
/*
* There is a small window in which user can write to 'loading'
* between loading done and disappearance of 'loading'
@@ -457,8 +449,16 @@
if (test_bit(FW_STATUS_DONE, &buf->status))
return;
+ list_del_init(&buf->pending_list);
set_bit(FW_STATUS_ABORT, &buf->status);
complete_all(&buf->completion);
+}
+
+static void fw_load_abort(struct firmware_priv *fw_priv)
+{
+ struct firmware_buf *buf = fw_priv->buf;
+
+ __fw_load_abort(buf);
/* avoid user action after loading abort */
fw_priv->buf = NULL;
@@ -467,6 +467,25 @@
#define is_fw_load_aborted(buf) \
test_bit(FW_STATUS_ABORT, &(buf)->status)
+static LIST_HEAD(pending_fw_head);
+
+/* reboot notifier for avoid deadlock with usermode_lock */
+static int fw_shutdown_notify(struct notifier_block *unused1,
+ unsigned long unused2, void *unused3)
+{
+ mutex_lock(&fw_lock);
+ while (!list_empty(&pending_fw_head))
+ __fw_load_abort(list_first_entry(&pending_fw_head,
+ struct firmware_buf,
+ pending_list));
+ mutex_unlock(&fw_lock);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block fw_shutdown_nb = {
+ .notifier_call = fw_shutdown_notify,
+};
+
static ssize_t firmware_timeout_show(struct class *class,
struct class_attribute *attr,
char *buf)
@@ -509,8 +528,6 @@
struct firmware_priv *fw_priv = to_firmware_priv(dev);
kfree(fw_priv);
-
- module_put(THIS_MODULE);
}
static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
@@ -619,6 +636,7 @@
* is completed.
* */
fw_map_pages_buf(fw_buf);
+ list_del_init(&fw_buf->pending_list);
complete_all(&fw_buf->completion);
break;
}
@@ -838,9 +856,6 @@
dev_set_uevent_suppress(f_dev, true);
- /* Need to pin this module until class device is destroyed */
- __module_get(THIS_MODULE);
-
retval = device_add(f_dev);
if (retval) {
dev_err(f_dev, "%s: device_register failed\n", __func__);
@@ -860,6 +875,7 @@
}
if (uevent) {
+ buf->need_uevent = true;
dev_set_uevent_suppress(f_dev, false);
dev_dbg(f_dev, "firmware: requesting %s\n", buf->fw_id);
if (timeout != MAX_SCHEDULE_TIMEOUT)
@@ -868,6 +884,10 @@
kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
}
+ mutex_lock(&fw_lock);
+ list_add(&buf->pending_list, &pending_fw_head);
+ mutex_unlock(&fw_lock);
+
wait_for_completion(&buf->completion);
cancel_delayed_work_sync(&fw_priv->timeout_work);
@@ -895,6 +915,23 @@
fw_priv->buf = firmware->priv;
return _request_firmware_load(fw_priv, uevent, timeout);
}
+
+#ifdef CONFIG_PM_SLEEP
+/* kill pending requests without uevent to avoid blocking suspend */
+static void kill_requests_without_uevent(void)
+{
+ struct firmware_buf *buf;
+ struct firmware_buf *next;
+
+ mutex_lock(&fw_lock);
+ list_for_each_entry_safe(buf, next, &pending_fw_head, pending_list) {
+ if (!buf->need_uevent)
+ __fw_load_abort(buf);
+ }
+ mutex_unlock(&fw_lock);
+}
+#endif
+
#else /* CONFIG_FW_LOADER_USER_HELPER */
static inline int
fw_load_from_user_helper(struct firmware *firmware, const char *name,
@@ -907,6 +944,10 @@
/* No abort during direct loading */
#define is_fw_load_aborted(buf) false
+#ifdef CONFIG_PM_SLEEP
+static inline void kill_requests_without_uevent(void) { }
+#endif
+
#endif /* CONFIG_FW_LOADER_USER_HELPER */
@@ -974,7 +1015,8 @@
return 1; /* need to load */
}
-static int assign_firmware_buf(struct firmware *fw, struct device *device)
+static int assign_firmware_buf(struct firmware *fw, struct device *device,
+ bool skip_cache)
{
struct firmware_buf *buf = fw->priv;
@@ -991,7 +1033,7 @@
* device may has been deleted already, but the problem
* should be fixed in devres or driver core.
*/
- if (device)
+ if (device && !skip_cache)
fw_add_devm_name(device, buf->fw_id);
/*
@@ -1047,8 +1089,10 @@
if (!fw_get_filesystem_firmware(device, fw->priv))
ret = fw_load_from_user_helper(fw, name, device,
uevent, nowait, timeout);
+
+ /* don't cache firmware handled without uevent */
if (!ret)
- ret = assign_firmware_buf(fw, device);
+ ret = assign_firmware_buf(fw, device, !uevent);
usermodehelper_read_unlock();
@@ -1086,8 +1130,15 @@
request_firmware(const struct firmware **firmware_p, const char *name,
struct device *device)
{
- return _request_firmware(firmware_p, name, device, true, false);
+ int ret;
+
+ /* Need to pin this module until return */
+ __module_get(THIS_MODULE);
+ ret = _request_firmware(firmware_p, name, device, true, false);
+ module_put(THIS_MODULE);
+ return ret;
}
+EXPORT_SYMBOL(request_firmware);
/**
* release_firmware: - release the resource associated with a firmware image
@@ -1101,6 +1152,7 @@
kfree(fw);
}
}
+EXPORT_SYMBOL(release_firmware);
/* Async support */
struct firmware_work {
@@ -1181,6 +1233,10 @@
schedule_work(&fw_work->work);
return 0;
}
+EXPORT_SYMBOL(request_firmware_nowait);
+
+#ifdef CONFIG_PM_SLEEP
+static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);
/**
* cache_firmware - cache one firmware image in kernel memory space
@@ -1196,7 +1252,7 @@
* Return !0 otherwise
*
*/
-int cache_firmware(const char *fw_name)
+static int cache_firmware(const char *fw_name)
{
int ret;
const struct firmware *fw;
@@ -1212,6 +1268,18 @@
return ret;
}
+static struct firmware_buf *fw_lookup_buf(const char *fw_name)
+{
+ struct firmware_buf *tmp;
+ struct firmware_cache *fwc = &fw_cache;
+
+ spin_lock(&fwc->lock);
+ tmp = __fw_lookup_buf(fw_name);
+ spin_unlock(&fwc->lock);
+
+ return tmp;
+}
+
/**
* uncache_firmware - remove one cached firmware image
* @fw_name: the firmware image name
@@ -1223,7 +1291,7 @@
* Return !0 otherwise
*
*/
-int uncache_firmware(const char *fw_name)
+static int uncache_firmware(const char *fw_name)
{
struct firmware_buf *buf;
struct firmware fw;
@@ -1242,9 +1310,6 @@
return -EINVAL;
}
-#ifdef CONFIG_PM_SLEEP
-static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);
-
static struct fw_cache_entry *alloc_fw_cache_entry(const char *name)
{
struct fw_cache_entry *fce;
@@ -1464,6 +1529,7 @@
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
+ kill_requests_without_uevent();
device_cache_fw_images();
break;
@@ -1526,6 +1592,7 @@
{
fw_cache_init();
#ifdef CONFIG_FW_LOADER_USER_HELPER
+ register_reboot_notifier(&fw_shutdown_nb);
return class_register(&firmware_class);
#else
return 0;
@@ -1539,15 +1606,10 @@
unregister_pm_notifier(&fw_cache.pm_notify);
#endif
#ifdef CONFIG_FW_LOADER_USER_HELPER
+ unregister_reboot_notifier(&fw_shutdown_nb);
class_unregister(&firmware_class);
#endif
}
fs_initcall(firmware_class_init);
module_exit(firmware_class_exit);
-
-EXPORT_SYMBOL(release_firmware);
-EXPORT_SYMBOL(request_firmware);
-EXPORT_SYMBOL(request_firmware_nowait);
-EXPORT_SYMBOL_GPL(cache_firmware);
-EXPORT_SYMBOL_GPL(uncache_firmware);
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 14f8a69..e315051 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -77,22 +77,6 @@
kfree(mem);
}
-/*
- * register_memory - Setup a sysfs device for a memory block
- */
-static
-int register_memory(struct memory_block *memory)
-{
- int error;
-
- memory->dev.bus = &memory_subsys;
- memory->dev.id = memory->start_section_nr / sections_per_block;
- memory->dev.release = memory_block_release;
-
- error = device_register(&memory->dev);
- return error;
-}
-
unsigned long __weak memory_block_size_bytes(void)
{
return MIN_MEMORY_BLOCK_SIZE;
@@ -371,11 +355,6 @@
static DEVICE_ATTR(phys_device, 0444, show_phys_device, NULL);
static DEVICE_ATTR(removable, 0444, show_mem_removable, NULL);
-#define mem_create_simple_file(mem, attr_name) \
- device_create_file(&mem->dev, &dev_attr_##attr_name)
-#define mem_remove_simple_file(mem, attr_name) \
- device_remove_file(&mem->dev, &dev_attr_##attr_name)
-
/*
* Block size attribute stuff
*/
@@ -388,12 +367,6 @@
static DEVICE_ATTR(block_size_bytes, 0444, print_block_size, NULL);
-static int block_size_init(void)
-{
- return device_create_file(memory_subsys.dev_root,
- &dev_attr_block_size_bytes);
-}
-
/*
* Some architectures will have custom drivers to do this, and
* will not need to do it from userspace. The fake hot-add code
@@ -429,17 +402,8 @@
out:
return ret;
}
-static DEVICE_ATTR(probe, S_IWUSR, NULL, memory_probe_store);
-static int memory_probe_init(void)
-{
- return device_create_file(memory_subsys.dev_root, &dev_attr_probe);
-}
-#else
-static inline int memory_probe_init(void)
-{
- return 0;
-}
+static DEVICE_ATTR(probe, S_IWUSR, NULL, memory_probe_store);
#endif
#ifdef CONFIG_MEMORY_FAILURE
@@ -485,23 +449,6 @@
static DEVICE_ATTR(soft_offline_page, S_IWUSR, NULL, store_soft_offline_page);
static DEVICE_ATTR(hard_offline_page, S_IWUSR, NULL, store_hard_offline_page);
-
-static __init int memory_fail_init(void)
-{
- int err;
-
- err = device_create_file(memory_subsys.dev_root,
- &dev_attr_soft_offline_page);
- if (!err)
- err = device_create_file(memory_subsys.dev_root,
- &dev_attr_hard_offline_page);
- return err;
-}
-#else
-static inline int memory_fail_init(void)
-{
- return 0;
-}
#endif
/*
@@ -546,6 +493,41 @@
return find_memory_block_hinted(section, NULL);
}
+static struct attribute *memory_memblk_attrs[] = {
+ &dev_attr_phys_index.attr,
+ &dev_attr_end_phys_index.attr,
+ &dev_attr_state.attr,
+ &dev_attr_phys_device.attr,
+ &dev_attr_removable.attr,
+ NULL
+};
+
+static struct attribute_group memory_memblk_attr_group = {
+ .attrs = memory_memblk_attrs,
+};
+
+static const struct attribute_group *memory_memblk_attr_groups[] = {
+ &memory_memblk_attr_group,
+ NULL,
+};
+
+/*
+ * register_memory - Setup a sysfs device for a memory block
+ */
+static
+int register_memory(struct memory_block *memory)
+{
+ int error;
+
+ memory->dev.bus = &memory_subsys;
+ memory->dev.id = memory->start_section_nr / sections_per_block;
+ memory->dev.release = memory_block_release;
+ memory->dev.groups = memory_memblk_attr_groups;
+
+ error = device_register(&memory->dev);
+ return error;
+}
+
static int init_memory_block(struct memory_block **memory,
struct mem_section *section, unsigned long state)
{
@@ -569,16 +551,6 @@
mem->phys_device = arch_get_memory_phys_device(start_pfn);
ret = register_memory(mem);
- if (!ret)
- ret = mem_create_simple_file(mem, phys_index);
- if (!ret)
- ret = mem_create_simple_file(mem, end_phys_index);
- if (!ret)
- ret = mem_create_simple_file(mem, state);
- if (!ret)
- ret = mem_create_simple_file(mem, phys_device);
- if (!ret)
- ret = mem_create_simple_file(mem, removable);
*memory = mem;
return ret;
@@ -656,14 +628,9 @@
unregister_mem_sect_under_nodes(mem, __section_nr(section));
mem->section_count--;
- if (mem->section_count == 0) {
- mem_remove_simple_file(mem, phys_index);
- mem_remove_simple_file(mem, end_phys_index);
- mem_remove_simple_file(mem, state);
- mem_remove_simple_file(mem, phys_device);
- mem_remove_simple_file(mem, removable);
+ if (mem->section_count == 0)
unregister_memory(mem);
- } else
+ else
kobject_put(&mem->dev.kobj);
mutex_unlock(&mem_sysfs_mutex);
@@ -700,6 +667,29 @@
return mem->state == MEM_OFFLINE;
}
+static struct attribute *memory_root_attrs[] = {
+#ifdef CONFIG_ARCH_MEMORY_PROBE
+ &dev_attr_probe.attr,
+#endif
+
+#ifdef CONFIG_MEMORY_FAILURE
+ &dev_attr_soft_offline_page.attr,
+ &dev_attr_hard_offline_page.attr,
+#endif
+
+ &dev_attr_block_size_bytes.attr,
+ NULL
+};
+
+static struct attribute_group memory_root_attr_group = {
+ .attrs = memory_root_attrs,
+};
+
+static const struct attribute_group *memory_root_attr_groups[] = {
+ &memory_root_attr_group,
+ NULL,
+};
+
/*
* Initialize the sysfs support for memory devices...
*/
@@ -711,7 +701,7 @@
unsigned long block_sz;
struct memory_block *mem = NULL;
- ret = subsys_system_register(&memory_subsys, NULL);
+ ret = subsys_system_register(&memory_subsys, memory_root_attr_groups);
if (ret)
goto out;
@@ -734,15 +724,6 @@
ret = err;
}
- err = memory_probe_init();
- if (!ret)
- ret = err;
- err = memory_fail_init();
- if (!ret)
- ret = err;
- err = block_size_init();
- if (!ret)
- ret = err;
out:
if (ret)
printk(KERN_ERR "%s() failed: %d\n", __func__, ret);
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 9eda842..ed75cf6 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -523,11 +523,13 @@
}
/**
- * platform_driver_register - register a driver for platform-level devices
+ * __platform_driver_register - register a driver for platform-level devices
* @drv: platform driver structure
*/
-int platform_driver_register(struct platform_driver *drv)
+int __platform_driver_register(struct platform_driver *drv,
+ struct module *owner)
{
+ drv->driver.owner = owner;
drv->driver.bus = &platform_bus_type;
if (drv->probe)
drv->driver.probe = platform_drv_probe;
@@ -538,7 +540,7 @@
return driver_register(&drv->driver);
}
-EXPORT_SYMBOL_GPL(platform_driver_register);
+EXPORT_SYMBOL_GPL(__platform_driver_register);
/**
* platform_driver_unregister - unregister a driver for platform-level devices
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index 2a166d5..b27f534 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -3,7 +3,7 @@
#
menu "PCMCIA character devices"
- depends on HOTPLUG && PCMCIA!=n
+ depends on PCMCIA!=n
config SYNCLINK_CS
tristate "SyncLink PC Card support"
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index e443f2c1..a697a64 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -145,7 +145,7 @@
config EDAC_E752X
tristate "Intel e752x (e7520, e7525, e7320) and 3100"
- depends on EDAC_MM_EDAC && PCI && X86 && HOTPLUG
+ depends on EDAC_MM_EDAC && PCI && X86
help
Support for error detection and correction on the Intel
E7520, E7525, E7320 server chipsets.
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 9387630..0747872 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -64,6 +64,7 @@
tristate "BIOS update support for DELL systems via sysfs"
depends on X86
select FW_LOADER
+ select FW_LOADER_USER_HELPER
help
Say m if you want to have the option of updating the BIOS for your
DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 80889d5..8dacd4c 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -135,7 +135,7 @@
config INTEL_MID_PTI
tristate "Parallel Trace Interface for MIPI P1149.7 cJTAG standard"
- depends on PCI && TTY
+ depends on PCI && TTY && (X86_INTEL_MID || COMPILE_TEST)
default n
help
The PTI (Parallel Trace Interface) driver directs
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 6d51aa6..77497f1 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -55,7 +55,6 @@
config XEN_PCIDEV_FRONTEND
tristate "Xen PCI Frontend"
depends on PCI && X86 && XEN
- select HOTPLUG
select PCI_XEN
select XEN_XENBUS_FRONTEND
default y
@@ -113,7 +112,6 @@
tristate "PCI IO-APIC hotplug support" if X86
depends on PCI
depends on ACPI
- depends on HOTPLUG
default !X86
config PCI_LABEL
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index 9fcb87f..bb7ebb2 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -4,7 +4,7 @@
menuconfig HOTPLUG_PCI
tristate "Support for PCI Hotplug"
- depends on PCI && HOTPLUG && SYSFS
+ depends on PCI && SYSFS
---help---
Say Y here if you have a motherboard with a PCI Hotplug controller.
This allows you to add and remove PCI cards while the machine is
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 6f61931..0c657d6a 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -4,7 +4,6 @@
menuconfig PCCARD
tristate "PCCard (PCMCIA/CardBus) support"
- depends on HOTPLUG
---help---
Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
computer. These are credit-card size devices such as network cards,
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 1ea6f1d..5be73ba 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -72,6 +72,7 @@
config PTP_1588_CLOCK_PCH
tristate "Intel PCH EG20T as PTP clock"
+ depends on X86 || COMPILE_TEST
select PTP_1588_CLOCK
help
This driver adds support for using the PCH EG20T as a PTP
diff --git a/drivers/staging/media/go7007/go7007.txt b/drivers/staging/media/go7007/go7007.txt
index fcb3e23..dc0026c 100644
--- a/drivers/staging/media/go7007/go7007.txt
+++ b/drivers/staging/media/go7007/go7007.txt
@@ -78,7 +78,6 @@
for custom-built kernels, the following options need to be enabled in the
kernel as built-in or modules:
- CONFIG_HOTPLUG - Support for hot-pluggable devices
CONFIG_MODULES - Enable loadable module support
CONFIG_KMOD - Automatic kernel module loading
CONFIG_FW_LOADER - Hotplug firmware loading support
diff --git a/drivers/video/geode/Kconfig b/drivers/video/geode/Kconfig
index 21e351a..1e85552 100644
--- a/drivers/video/geode/Kconfig
+++ b/drivers/video/geode/Kconfig
@@ -3,7 +3,7 @@
#
config FB_GEODE
bool "AMD Geode family framebuffer support"
- depends on FB && PCI && X86
+ depends on FB && PCI && (X86_32 || (X86 && COMPILE_TEST))
---help---
Say 'Y' here to allow you to select framebuffer drivers for
the AMD Geode family of processors.
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index c5ca6ae..6314629 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -21,6 +21,7 @@
#include <linux/debugfs.h>
#include <linux/io.h>
#include <linux/slab.h>
+#include <linux/atomic.h>
static ssize_t default_read_file(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
@@ -403,6 +404,47 @@
}
EXPORT_SYMBOL_GPL(debugfs_create_size_t);
+static int debugfs_atomic_t_set(void *data, u64 val)
+{
+ atomic_set((atomic_t *)data, val);
+ return 0;
+}
+static int debugfs_atomic_t_get(void *data, u64 *val)
+{
+ *val = atomic_read((atomic_t *)data);
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_atomic_t, debugfs_atomic_t_get,
+ debugfs_atomic_t_set, "%lld\n");
+DEFINE_SIMPLE_ATTRIBUTE(fops_atomic_t_ro, debugfs_atomic_t_get, NULL, "%lld\n");
+DEFINE_SIMPLE_ATTRIBUTE(fops_atomic_t_wo, NULL, debugfs_atomic_t_set, "%lld\n");
+
+/**
+ * debugfs_create_atomic_t - create a debugfs file that is used to read and
+ * write an atomic_t value
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ * from.
+ */
+struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
+ struct dentry *parent, atomic_t *value)
+{
+ /* if there are no write bits set, make read only */
+ if (!(mode & S_IWUGO))
+ return debugfs_create_file(name, mode, parent, value,
+ &fops_atomic_t_ro);
+ /* if there are no read bits set, make write only */
+ if (!(mode & S_IRUGO))
+ return debugfs_create_file(name, mode, parent, value,
+ &fops_atomic_t_wo);
+
+ return debugfs_create_file(name, mode, parent, value, &fops_atomic_t);
+}
+EXPORT_SYMBOL_GPL(debugfs_create_atomic_t);
static ssize_t read_file_bool(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
@@ -431,6 +473,7 @@
if (copy_from_user(buf, user_buf, buf_size))
return -EFAULT;
+ buf[buf_size] = '\0';
if (strtobool(buf, &bv) == 0)
*val = bv;
diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index 5a376ab..90c6a8f 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -20,13 +20,12 @@
be found here: http://sources.redhat.com/cluster
The "nolock" lock module is now built in to GFS2 by default. If
- you want to use the DLM, be sure to enable HOTPLUG and IPv4/6
- networking.
+ you want to use the DLM, be sure to enable IPv4/6 networking.
config GFS2_FS_LOCKING_DLM
bool "GFS2 DLM locking"
depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
- HOTPLUG && CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
+ CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
help
Multiple node locking module for GFS2
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 4cfd742..e068e74 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -74,7 +74,7 @@
}
/**
- * sysfs_link_subling - link sysfs_dirent into sibling rbtree
+ * sysfs_link_sibling - link sysfs_dirent into sibling rbtree
* @sd: sysfs_dirent of interest
*
* Link @sd into its sibling rbtree which starts from
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 602f56d..d2bb7ed 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -449,10 +449,12 @@
spin_lock_irqsave(&sysfs_open_dirent_lock, flags);
- od = sd->s_attr.open;
- if (od) {
- atomic_inc(&od->event);
- wake_up_interruptible(&od->poll);
+ if (!WARN_ON(sysfs_type(sd) != SYSFS_KOBJ_ATTR)) {
+ od = sd->s_attr.open;
+ if (od) {
+ atomic_inc(&od->event);
+ wake_up_interruptible(&od->poll);
+ }
}
spin_unlock_irqrestore(&sysfs_open_dirent_lock, flags);
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 0ce3ccf..3e2837a 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -24,8 +24,6 @@
#include <linux/security.h>
#include "sysfs.h"
-extern struct super_block * sysfs_sb;
-
static const struct address_space_operations sysfs_aops = {
.readpage = simple_readpage,
.write_begin = simple_write_begin,
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index eb58d2d..4f27372 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -68,14 +68,6 @@
* are handled as text/data or they can be discarded (which
* often happens at runtime)
*/
-#ifdef CONFIG_HOTPLUG
-#define DEV_KEEP(sec) *(.dev##sec)
-#define DEV_DISCARD(sec)
-#else
-#define DEV_KEEP(sec)
-#define DEV_DISCARD(sec) *(.dev##sec)
-#endif
-
#ifdef CONFIG_HOTPLUG_CPU
#define CPU_KEEP(sec) *(.cpu##sec)
#define CPU_DISCARD(sec)
@@ -182,8 +174,6 @@
*(.data) \
*(.ref.data) \
*(.data..shared_aligned) /* percpu related */ \
- DEV_KEEP(init.data) \
- DEV_KEEP(exit.data) \
CPU_KEEP(init.data) \
CPU_KEEP(exit.data) \
MEM_KEEP(init.data) \
@@ -372,8 +362,6 @@
/* __*init sections */ \
__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
*(.ref.rodata) \
- DEV_KEEP(init.rodata) \
- DEV_KEEP(exit.rodata) \
CPU_KEEP(init.rodata) \
CPU_KEEP(exit.rodata) \
MEM_KEEP(init.rodata) \
@@ -416,8 +404,6 @@
*(.text.hot) \
*(.text) \
*(.ref.text) \
- DEV_KEEP(init.text) \
- DEV_KEEP(exit.text) \
CPU_KEEP(init.text) \
CPU_KEEP(exit.text) \
MEM_KEEP(init.text) \
@@ -503,7 +489,6 @@
/* init and exit section handling */
#define INIT_DATA \
*(.init.data) \
- DEV_DISCARD(init.data) \
CPU_DISCARD(init.data) \
MEM_DISCARD(init.data) \
KERNEL_CTORS() \
@@ -511,7 +496,6 @@
*(.init.rodata) \
FTRACE_EVENTS() \
TRACE_SYSCALLS() \
- DEV_DISCARD(init.rodata) \
CPU_DISCARD(init.rodata) \
MEM_DISCARD(init.rodata) \
CLK_OF_TABLES() \
@@ -521,14 +505,11 @@
#define INIT_TEXT \
*(.init.text) \
- DEV_DISCARD(init.text) \
CPU_DISCARD(init.text) \
MEM_DISCARD(init.text)
#define EXIT_DATA \
*(.exit.data) \
- DEV_DISCARD(exit.data) \
- DEV_DISCARD(exit.rodata) \
CPU_DISCARD(exit.data) \
CPU_DISCARD(exit.rodata) \
MEM_DISCARD(exit.data) \
@@ -536,7 +517,6 @@
#define EXIT_TEXT \
*(.exit.text) \
- DEV_DISCARD(exit.text) \
CPU_DISCARD(exit.text) \
MEM_DISCARD(exit.text)
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 63f2465..d68b4ea 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -79,6 +79,8 @@
struct dentry *parent, u64 *value);
struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
struct dentry *parent, size_t *value);
+struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
+ struct dentry *parent, atomic_t *value);
struct dentry *debugfs_create_bool(const char *name, umode_t mode,
struct dentry *parent, u32 *value);
diff --git a/include/linux/device.h b/include/linux/device.h
index c0a1261..9d4835a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -80,6 +80,7 @@
* bus-specific setup
* @p: The private data of the driver core, only the driver core can
* touch this.
+ * @lock_key: Lock class key for use by the lock validator
*
* A bus is a channel between the processor and one or more devices. For the
* purposes of the device model, all devices are connected via a bus, even if
@@ -635,6 +636,7 @@
* segment limitations.
* @dma_pools: Dma pools (if dma'ble device).
* @dma_mem: Internal for coherent mem override.
+ * @cma_area: Contiguous memory area for dma allocations
* @archdata: For arch-specific additions.
* @of_node: Associated device tree node.
* @acpi_node: Associated ACPI device node.
@@ -648,6 +650,7 @@
* @release: Callback to free the device after all references have
* gone away. This should be set by the allocator of the
* device (i.e. the bus driver that discovered the device).
+ * @iommu_group: IOMMU group the device belongs to.
*
* At the lowest level, every device in a Linux system is represented by an
* instance of struct device. The device structure contains the information
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index e4279fe..e154c10 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -47,8 +47,6 @@
void (*cont)(const struct firmware *fw, void *context));
void release_firmware(const struct firmware *fw);
-int cache_firmware(const char *name);
-int uncache_firmware(const char *name);
#else
static inline int request_firmware(const struct firmware **fw,
const char *name,
@@ -68,15 +66,6 @@
{
}
-static inline int cache_firmware(const char *name)
-{
- return -ENOENT;
-}
-
-static inline int uncache_firmware(const char *name)
-{
- return -EINVAL;
-}
#endif
#endif
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9abf1db..cd46ee5 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -180,7 +180,13 @@
const struct platform_device_id *id_table;
};
-extern int platform_driver_register(struct platform_driver *);
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE
+ */
+#define platform_driver_register(drv) \
+ __platform_driver_register(drv, THIS_MODULE)
+extern int __platform_driver_register(struct platform_driver *,
+ struct module *);
extern void platform_driver_unregister(struct platform_driver *);
/* non-hotpluggable platform devices may use this so that probe() and
diff --git a/init/Kconfig b/init/Kconfig
index 2d9b831..1e825c2 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -53,6 +53,20 @@
need to set this unless you want the configured kernel build
directory to select the cross-compiler automatically.
+config COMPILE_TEST
+ bool "Compile also drivers which will not load"
+ default n
+ help
+ Some drivers can be compiled on a different platform than they are
+ intended to be run on. Despite they cannot be loaded there (or even
+ when they load they cannot be used due to missing HW support),
+ developers still, opposing to distributors, might want to build such
+ drivers to compile-test them.
+
+ If you are a developer and want to build everything available, say Y
+ here. If you are a user/distributor, say N here to exclude useless
+ drivers to be distributed.
+
config LOCALVERSION
string "Local version - append to kernel release"
help
@@ -1245,9 +1259,6 @@
the unaligned access emulation.
see arch/parisc/kernel/unaligned.c for reference
-config HOTPLUG
- def_bool y
-
config HAVE_PCSPKR_PLATFORM
bool
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 5dfdc9e..9c39de0 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -100,7 +100,6 @@
depends on SMP
depends on ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE
depends on PM_SLEEP
- select HOTPLUG
select HOTPLUG_CPU
config PM_AUTOSLEEP
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index c5c7a76..d7d501e 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -182,27 +182,6 @@
#endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
-static int debugfs_atomic_t_set(void *data, u64 val)
-{
- atomic_set((atomic_t *)data, val);
- return 0;
-}
-
-static int debugfs_atomic_t_get(void *data, u64 *val)
-{
- *val = atomic_read((atomic_t *)data);
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(fops_atomic_t, debugfs_atomic_t_get,
- debugfs_atomic_t_set, "%lld\n");
-
-static struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
- struct dentry *parent, atomic_t *value)
-{
- return debugfs_create_file(name, mode, parent, value, &fops_atomic_t);
-}
-
struct dentry *fault_create_debugfs_attr(const char *name,
struct dentry *parent, struct fault_attr *attr)
{
diff --git a/lib/kobject.c b/lib/kobject.c
index b7e29a6..4a1f33d 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -805,7 +805,7 @@
kset = kzalloc(sizeof(*kset), GFP_KERNEL);
if (!kset)
return NULL;
- retval = kobject_set_name(&kset->kobj, name);
+ retval = kobject_set_name(&kset->kobj, "%s", name);
if (retval) {
kfree(kset);
return NULL;
diff --git a/mm/Kconfig b/mm/Kconfig
index e742d06..f5e698e 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -173,7 +173,7 @@
config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
depends on SPARSEMEM || X86_64_ACPI_NUMA
- depends on HOTPLUG && ARCH_ENABLE_MEMORY_HOTPLUG
+ depends on ARCH_ENABLE_MEMORY_HOTPLUG
depends on (IA64 || X86 || PPC_BOOK3S_64 || SUPERH || S390)
config MEMORY_HOTPLUG_SPARSE