Fix a small issue for the stack pointer in /proc/<pid>/stat.  In case of a
kernel thread the value of the printed stack pointer should be 0.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Allow memory hotplug and hibernation in the same kernel

Memory hotplug and hibernation were exclusive in Kconfig.  This is
obviously a problem for distribution kernels who want to support both in
the same image.

After some discussions with Rafael and others the only problem is with
parallel memory hotadd or removal while a hibernation operation is in
process.  It was also working for s390 before.

This patch removes the Kconfig level exclusion, and simply makes the
memory add / remove functions grab the pm_mutex to exclude against
hibernation.

Fixes a regression - old kernels didn't exclude memory hotadd and
hibernation.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Commit 65a64464 ("HWPOISON: Allow
schedule_on_each_cpu() from keventd") which allows schedule_on_each_cpu()
to be called from keventd added a race condition.  schedule_on_each_cpu()
may race with cpu hotplug and end up executing the function twice on a
cpu.

Fix it by moving direct execution into the section protected with
get/put_online_cpus().  While at it, update code such that direct
execution is done after works have been scheduled for all other cpus and
drop unnecessary cpu != orig test from flush loop.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

With CONFIG_MEMORY_HOTPLUG I got following warning:

WARNING: vmlinux.o(.text+0x1276b0): Section mismatch in reference from
the function hotadd_new_pgdat() to the function
.meminit.text:free_area_init_node()
The function hotadd_new_pgdat() references
the function __meminit free_area_init_node().
This is often because hotadd_new_pgdat lacks a __meminit
annotation or the annotation of free_area_init_node is wrong.

Use __ref to fix this.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Vegard Nossum <vegardno@ifi.uio.no>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The return should be negative on errors
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Return a negative error value instead of a positive
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: dmitry pervushin <dpervushin@embeddedalley.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] bfa: declare MODULE_FIRMWARE
  [SCSI] gdth: Prevent negative offsets in ioctl CVE-2009-3080
  [SCSI] libsas: do not set res = 0 in sas_ex_discover_dev()
  [SCSI] Fix incorrect reporting of host protection capabilities
  [SCSI] pmcraid: Fix ppc64 driver build for using cpu_to_le32 on U8 data type
  [SCSI] ipr: add workaround for MSI interrupts on P7
  [SCSI] scsi_transport_fc: Fix WARN message for FC passthru failure paths
  [SCSI] bfa: fix test in bfad_os_fc_host_init()

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: copy li_lsn before dropping AIL lock
  XFS bug in log recover with quota (bugzilla id 855)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: lifebook - fix settings for CF-72
  Input: psmouse - fix breakage introduced by b7802c5c

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: clear server inode number flag while autodisabling

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] pxa: ensure mfp is in correct range in mfp_{read,write}
  [ARM] pxa/hx4700: fix hx4700 touchscreen pressure values
  ARM: 5787/1: U300 COH 901 331 fixes
  ARM: Fix warning in sa1100-flash.c
  [ARM] Kirkwood: disable propagation of mbus error to the CPU local bus
  [ARM] pxa: fix incorrect mfp_to_gpio() conversion
  [ARM] pxa/colibri: fix AC97 ifdefs and add missing include
  [ARM] pxa: fix missing underscores in mfp-pxa910.h
  [ARM] pxa: fix interrupts number calculation when CONFIG_PXA_HAVE_ISA_IRQS=y

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  dereferencing freed memory regulator_fixed_voltage_remove()
  regulator: Fix check of unsigned return value and transmit errors in wm831x_gp_ldo_get_mode()
  regulator: Handle missing constraints in _regulator_disable()

* 'for-linus' of git://github.com/at91linux/linux-2.6-at91:
  at91: at91sam9g20ek modify dual slot evaluation kit

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (adt7475) Fix sysfs file names
  hwmon: (adt7475) Cache limits for 60 seconds
  hwmon: (adt7475) Fix temperature fault flags
  hwmon: (s3c-hwmon) Ignore invalid divider settings

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
  leds-gpio: fix possible crash on OF device unbinding
  backlight: Fix backlight limiting on spitz/corgi devices
  backlight: lcd - Fix wrong sizeof

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: ice1724 - make some bitfields unsigned
  ALSA: hda - Dell Studio 1557 hd-audio quirk
  ALSA: ice1724 - Fix section mismatch in prodigy_hd2_resume()
  ALSA: hda - Add another Nvidia HDMI codec id (10de:0005)
  ALSA: hda: Use model=mb5 for MacBookPro 5,2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: deleted inconsistent comment in nilfs_load_inode_block()
  nilfs2: deleted struct nilfs_dat_group_desc
  nilfs2: fix lock order reversal in chcp operation

Merge branch 'hostprogs-wmissing-prototypes' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux-misc

* 'hostprogs-wmissing-prototypes' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux-misc:
  Makefile: Add -Wmising-prototypes to HOSTCFLAGS
  oss: Mark loadhex static in hex2hex.c
  dtc: Mark various internal functions static
  dtc: Set "noinput" in the lexer to avoid an unused function
  drm: radeon: Mark several functions static in mkregtable
  arch/sparc/boot/*.c: Mark various internal functions static
  arch/powerpc/boot/addRamDisk.c: Mark several internal functions static
  arch/alpha/boot/tools/objstrip.c: Mark "usage" static
  Documentation/vm/page-types.c: Declare checked_open static
  genksyms: Mark is_reserved_word static
  kconfig: Mark various internal functions static
  kconfig: Make zconf.y work with current bison

These values were only introduced during this release cycle, so it is
still early enough to get them right.

alpha uses the same values that are in asm-generic/fcntl.h, so just
remove them.

parisc uses the values interchanged for no apparent reason, so remove
them to give us consistency across all architectures.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Access to log items on the AIL is generally protected by m_ail_lock;
this is particularly needed when we're getting or setting the 64-bit
li_lsn on a 32-bit platform.  This patch fixes a couple places where we
were accessing the log item after dropping the AIL lock on 32-bit
machines.

This can result in a partially-zeroed log->l_tail_lsn if
xfs_trans_ail_delete is racing with xfs_trans_ail_update, and in at
least some cases, this can leave the l_tail_lsn with a zero cycle
number, which means xlog_space_left will think the log is full (unless
CONFIG_XFS_DEBUG is set, in which case we'll trip an ASSERT), leading to
processes stuck forever in xlog_grant_log_space.

Thanks to Adrian VanderSpek for first spotting the race potential and to
Dave Chinner for debug assistance.
Signed-off-by: Nathaniel W. Turner <nate@houseofnate.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

Hi,
I was hit by a bug in linux 2.6.31 when XFS is not able to recover the
log after a crash if fs was mounted with quotas. Gory details in XFS
bugzilla: http://oss.sgi.com/bugzilla/show_bug.cgi?id=855.

It looks like wrong struct is used in buffer length check, and the following
patch should fix the problem.

xfs_dqblk_t has a size of 104+32 bytes, while xfs_disk_dquot_t is 104 bytes
long, and this is exactly what I see in system logs - "XFS: dquot too small
(104) in xlog_recover_do_dquot_trans."
Signed-off-by: Jan Rekorajski <baggins@sith.mimuw.edu.pl>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

Panasonic CF-72 uses 6-byte protocol and does not need to be tied
to a particular port.
Signed-off-by: Abner Holsinger <9zabner@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Commit b7802c5c ("Input: psmouse - use boolean type") caused the
synaptics_hardware variable to be completely useless, as it is
constantly set to 'true' throughout the whole psmouse_extensions().
This was caused by the following hunk in the commit in question

	-       int synaptics_hardware = 0;
	+       bool synaptics_hardware = true;

which is wrong and causes driver to issue extra reset when falling
back to bare PS/2 protocol.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Ensure we do not read/write outside array boundaries with a negative index.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

hx4700 touchscreen events were being dropped in ads7846_rx() because their
pressure values consistently exceeded the platform maximum of 512; a sample
of 256 pressure values were in the range 531 to 815.  Doubling the platform
maximum to 1024 allows hx4700 touchscreen events to pass the test.
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

This will fix some small issues with the COH 901 331 RTC driver:
- Interrupt is disabled after alarm so that we don't fire
  multiple interrupts.
- We return 0 from the coh901331_alarm_irq_enable() ridding
  a compile warning.
- We alter the name in the U300 device registry to match that
  of the driver so they sucessfully resolve.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/mtd/maps/sa1100-flash.c: In function 'sa1100_probe_subdev':
drivers/mtd/maps/sa1100-flash.c:214: warning: format '%d' expects type 'int', but argument 3 has type 'uint64_t'
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

at91sam9g20ek rev. C and onwards embed two SD/MMC slots. This patch modify the
previous dual slot board definition to match the official rev. C board. It also
allows the use of at91_mci SD/MMC driver in addition to the atmel-mci one.

Some pins have been re-affected from leds or Ethernet phy IRQ to the SD/MMC
slot A. This lead to a modification of those definitions.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>

Fix the commit ec06aedd that intended to turn off querying for server inode
numbers when server doesn't consistently support inode numbers. Presumably
the commit didn't actually clear the CIFS_MOUNT_SERVER_INUM flag, perhaps a
typo.
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: Stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>

Don't dereference drvdata after it has been freed.

regards,
dan carpenter
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

If there are leds present in the OF tree, but the GPIOs for (some) of
them are unavailable, led_data doesn't get populated with correct
devices. Then, on device unbinding, one can crash the kernel.

Workaround this by setting led->gpio to invalid value early.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

On spitz (& similar) machines, if battery is running low, backlight
needs
to be limited to lower step.  Unfortunately, current code uses &= for
limiting, turning backlight off completely for some backlight settings.
Fix that.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

Which is why I have always preferred sizeof(struct foo) over
sizeof(var).
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

The adt7475 driver creates pwm#_auto_channel_temp attributes instead
of the standard pwm#_auto_channels_temp. Fix it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>

The comment says that limits are cached for 60 seconds but the code
actually caches them for only 2 seconds. Align the code on the
comment, as 60 seconds makes more sense.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>

The logic of temperature fault flags is wrong, it shows faults when
there are none and vice versa. Fix it.

I can't believe this has been broken since the driver was added, 8
months ago, basically breaking temp1 and temp3, and nobody ever
complained.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>

Avoid registering channels that have zero divider settings in them, as this
will only lead to kernel OOPS from divide-by-zero when the sysfs entry is
read.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>