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299,176 commits

Author SHA1 Message Date
Jan Engelhardt
c15f1c8325 netfilter: ipset: use NFPROTO_ constants
ipset is actually using NFPROTO values rather than AF (xt_set passes
that along).

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-03-07 17:40:29 +01:00
Linus Torvalds
4f262acfde Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King.

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7358/1: perf: add PMU hotplug notifier
  ARM: 7357/1: perf: fix overflow handling for xscale2 PMUs
  ARM: 7356/1: perf: check that we have an event in the PMU IRQ handlers
  ARM: 7355/1: perf: clear overflow flag when disabling counter on ARMv7 PMU
  ARM: 7354/1: perf: limit sample_period to half max_period in non-sampling mode
  ARM: ecard: ensure fake vma vm_flags is setup
  ARM: 7346/1: errata: fix PL310 erratum #753970 workaround selection
  ARM: 7345/1: errata: update workaround for A9 erratum #743622
  ARM: 7348/1: arm/spear600: fix one-shot timer
  ARM: 7339/1: amba/serial.h: Include types.h for resolving dependency of type bool
2012-03-07 08:33:03 -08:00
Linus Torvalds
d09b3c9618 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov: "Just a few driver fixups,
nothing exciting."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - fix 3rd-gen Bamboo MT when 4+ fingers are in use
  Input: twl4030-vibra - use proper guard for PM methods
  Input: evdev - fix variable initialisation
  Input: wacom - add missing LEDS_CLASS to Kconfig
  Input: ALPS - fix touchpad detection when buttons are pressed
2012-03-07 08:31:31 -08:00
Mark Salter
4cd7c0a03e C6X: fix KSTK_EIP and KSTK_ESP macros
There was a latent typo in the C6X KSTK_EIP and KSTK_ESP macros which
caused a problem with a new patch which used them. The broken definitions
were of the form:

  #define KSTK_FOO(tsk) (task_pt_regs(task)->foo)

Note the use of task vs tsk. This actually worked before because the
only place in the kernel which used these macros passed in a local
pointer named task.

Signed-off-by: Mark Salter <msalter@redhat.com>
2012-03-07 11:28:22 -05:00
Linus Torvalds
4293f20c19 Revert "CPU hotplug, cpusets, suspend: Don't touch cpusets during suspend/resume"
This reverts commit 8f2f748b06.

It causes some odd regression that we have not figured out, and it's too
late in the -rc series to try to figure it out now.

As reported by Konstantin Khlebnikov, it causes consistent hangs on his
laptop (Thinkpad x220: 2x cores + HT).  They can be avoided by adding
calls to "rebuild_sched_domains();" in cpuset_cpu_[in]active() for the
CPU_{ONLINE/DOWN_FAILED/DOWN_PREPARE}_FROZEN cases, but it's not at all
clear why, and it makes no sense.

Konstantin's config doesn't even have CONFIG_CPUSETS enabled, just to
make things even more interesting.  So it's not the cpusets, it's just
the scheduling domains.

So until this is understood, revert.

Bisected-reported-and-tested-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-07 08:21:19 -08:00
Andy Adamson
9cb8196839 NFSv4.1 handle DS stateid errors
Handle DS READ and WRITE stateid errors by recovering the stateid on the MDS.

NFS4ERR_OLD_STATEID is ignored as the client always sends a
state sequenceid of zero for DS READ and WRITE stateids.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-07 10:53:55 -05:00
Weston Andros Adamson
4f1abd226d NFS: add fh_crc to debug output
Print the filehandle crc in two debug messages

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-07 10:34:27 -05:00
Weston Andros Adamson
d8e0539ebd NFS: add filehandle crc for debug display
Match wireshark's CRC-32 hash for easier debugging

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-07 10:34:07 -05:00
Artem Bityutskiy
5a1f36c90c UBIFS: improve error messages
Ricard complaints that the following error message is odd:

"UBIFS error (pid 1578): validate_sb: bad superblock, error 8"

and he is right. This patch improves the error messages a bit and makes
them more user-friendly.

Reported-by: Ricard Wanderlof <ricard.wanderlof@axis.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-03-07 17:13:23 +02:00
Jiri Kosina
4f3612b16e Revert "power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c"
This reverts commit ce64b8d85d. It is done
via moduleh tree as part of a larger cleanup.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
2012-03-07 16:08:46 +01:00
Fengguang Wu
c097b2ca51 writeback: fix fn name in writeback_inodes_sb_nr_if_idle() comment header
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-07 16:08:46 +01:00
Andrew Morton
95468fd41a writeback: fix typo in the writeback_control comment
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-07 16:08:46 +01:00
Masanari Iida
40e47125e6 Documentation: Fix multiple typo in Documentation
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-07 16:08:24 +01:00
Stephane Grosjean
1ccba2103a can: peak_usb: PCAN-USB specific part: fix little endian usage
That patch fixes some bad usage of two little-endian variables, which lead to
some warning/error when building the peak_usb driver.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-03-07 15:51:01 +01:00
Dave Airlie
aaefcd4284 drm/radeon: deal with errors from framebuffer init path.
We've been getting occasional oops running a 32-bit kernel on a certain
system in our RHEL test hw. It appears that we fail to get sufficent ioremap
space for the framebuffer, and this leads to an oops.

This patch should fix the oops and leave a message in the logs we can
check for.

A future fix would probably to resize the console to a size that we can
ioremap.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-07 14:07:40 +00:00
Christian König
0be70439f2 drm/radeon: fix a semaphore deadlock on pre cayman asics
The out of order execution of semaphore commands on
pre cayman asics doesn't work correctly and can
cause deadlocks, so turn it off for now.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-07 14:07:29 +00:00
Rob Clark
b19c19afa8 drm: cope with platformdev->id == -1
If there are not multiple instances of a platform device, the id
should apparently be set to -1.  Which results in a odd looking
bus-id like "platform:foodrm:-1".  Probably we should just treat
this case as id 0.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-07 14:03:40 +00:00
Ingo Molnar
a5c2edf576 Fix a RCU warning in MCE code
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Merge tag 'mce-fix-for-3.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras into x86/urgent

Fix a reproducible RCU warning in the MCE code

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-03-07 14:44:35 +01:00
Mark Brown
6f04247ba8 ARM: S3C64XX: Supply platform data for SPI on Cragganmore
Having to specify the platform data explicitly like this even though it
is provided as a default doesn't feel entirely elegant but there we are.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 04:27:50 -08:00
Mark Brown
f73dc3db4f ARM: S3C64XX: Add some more Cragganmore module IDs to the table
Just IDs for diagnostics, nothing is actually supported. Not all of
these have board numbers assigned yet, these will be updated as the
numbers are assigned.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 04:13:20 -08:00
Mark Brown
66bf93212f ASoC: dapm: Only lock CODEC for I/O if not using regmap
If we do use regmap then regmap will take care of things for us. We
actually already have this check at a higher level for the current
users but this makes sure we do the right thing in the future too if
we need to.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2012-03-07 11:53:00 +00:00
Russell King
d138dacb4b NET: sa11x0-ir: add DMA support for SIR transmit mode
As the DMA engine API allows DMA channels to be reconfigured on the
fly, we can now support switching the DMA channel configuration to
support SIR transmit DMA without needing to claim an additional
physical DMA channel - thereby using up half the DMA channels just
for one driver.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 11:46:19 +00:00
Russell King
bf95154ff6 NET: sa11x0-ir: convert sa11x0-ir driver to use DMA engine API
Convert the sa11x0 IrDA driver to use the sa11x0 DMA engine driver
rather than our own platform specific DMA API.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 11:46:17 +00:00
Russell King
bb8c95055a Merge branch 'sa11x0-dma' into sa11x0-ir 2012-03-07 11:46:12 +00:00
Kukjin Kim
60571f98d2 Merge branch 'topic/cleanup-use-static' into next/cleanup-use-static
Conflicts:
	arch/arm/mach-exynos/dma.c
	arch/arm/mach-s5p64x0/dma.c
	arch/arm/mach-s5pc100/dma.c
	arch/arm/mach-s5pv210/dma.c
2012-03-07 03:34:41 -08:00
Russell King
7931d92f4f ARM: sa11x0: add SA-11x0 DMA device
Add sa11x0 DMA platform device and resources to the list of
generic platform devices for SA11x0 machines.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 11:32:21 +00:00
Russell King
6365bead25 DMA: sa11x0: add SA-11x0 DMA driver
Add support for the SA-11x0 DMA driver, which replaces the private
API version in arch/arm/mach-sa1100/dma.c.

We model this as a set of virtual DMA channels, one for each request
signal, and assign the virtual DMA channel to a physical DMA channel
when there is work to be done.  This allows DMA users to claim their
channels, and hold them while not in use, without affecting the
availability of the physical channels.

Another advantage over this approach, compared to the private version,
is that a channel can be reconfigured on the fly without having to
release and re-request it - which for the IrDA driver, allows us to
use DMA for SIR mode transmit without eating up three physical
channels.  As IrDA is half-duplex, we actually only need one physical
channel, and this architecture allows us to achieve that.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 11:32:21 +00:00
Takashi Iwai
785f857d1c ALSA: hda - Set codec to D3 forcibly even if not used
We've seen a problem with a pop-noise at suspend/resume on a HP
machine with ALC269, and it turned out to be an issue that the
controller going to D3 while the codec is unused.

When the device is once suspended and resumed and kept unused, the
driver doesn't initialize the codecs.  Instead, the codec chips are
set up dynamically at the first usage.  Now, suppose the device going
to suspend again before the codec is set up.  The controller is turned
off to D3 while the codec chips are untouched.  This caused a pop
noise because the codec chip might have been turned on implicitly by
the hardware.

As a workaround, the codec chip needs to be set to D3 when going to
suspend no matter whether it was used or not.  Also, for making it
happening, the controller has to be always set up in the resume path.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-03-07 11:52:50 +01:00
Srivatsa S. Bhat
b11e3d782b x86, mce: Fix rcu splat in drain_mce_log_buffer()
While booting, the following message is seen:

[   21.665087] ===============================
[   21.669439] [ INFO: suspicious RCU usage. ]
[   21.673798] 3.2.0-0.0.0.28.36b5ec9-default #2 Not tainted
[   21.681353] -------------------------------
[   21.685864] arch/x86/kernel/cpu/mcheck/mce.c:194 suspicious rcu_dereference_index_check() usage!
[   21.695013]
[   21.695014] other info that might help us debug this:
[   21.695016]
[   21.703488]
[   21.703489] rcu_scheduler_active = 1, debug_locks = 1
[   21.710426] 3 locks held by modprobe/2139:
[   21.714754]  #0:  (&__lockdep_no_validate__){......}, at: [<ffffffff8133afd3>] __driver_attach+0x53/0xa0
[   21.725020]  #1:
[   21.725323] ioatdma: Intel(R) QuickData Technology Driver 4.00
[   21.733206]  (&__lockdep_no_validate__){......}, at: [<ffffffff8133afe1>] __driver_attach+0x61/0xa0
[   21.743015]  #2:  (i7core_edac_lock){+.+.+.}, at: [<ffffffffa01cfa5f>] i7core_probe+0x1f/0x5c0 [i7core_edac]
[   21.753708]
[   21.753709] stack backtrace:
[   21.758429] Pid: 2139, comm: modprobe Not tainted 3.2.0-0.0.0.28.36b5ec9-default #2
[   21.768253] Call Trace:
[   21.770838]  [<ffffffff810977cd>] lockdep_rcu_suspicious+0xcd/0x100
[   21.777366]  [<ffffffff8101aa41>] drain_mcelog_buffer+0x191/0x1b0
[   21.783715]  [<ffffffff8101aa78>] mce_register_decode_chain+0x18/0x20
[   21.790430]  [<ffffffffa01cf8db>] i7core_register_mci+0x2fb/0x3e4 [i7core_edac]
[   21.798003]  [<ffffffffa01cfb14>] i7core_probe+0xd4/0x5c0 [i7core_edac]
[   21.804809]  [<ffffffff8129566b>] local_pci_probe+0x5b/0xe0
[   21.810631]  [<ffffffff812957c9>] __pci_device_probe+0xd9/0xe0
[   21.816650]  [<ffffffff813362e4>] ? get_device+0x14/0x20
[   21.822178]  [<ffffffff81296916>] pci_device_probe+0x36/0x60
[   21.828061]  [<ffffffff8133ac8a>] really_probe+0x7a/0x2b0
[   21.833676]  [<ffffffff8133af23>] driver_probe_device+0x63/0xc0
[   21.839868]  [<ffffffff8133b01b>] __driver_attach+0x9b/0xa0
[   21.845718]  [<ffffffff8133af80>] ? driver_probe_device+0xc0/0xc0
[   21.852027]  [<ffffffff81339168>] bus_for_each_dev+0x68/0x90
[   21.857876]  [<ffffffff8133aa3c>] driver_attach+0x1c/0x20
[   21.863462]  [<ffffffff8133a64d>] bus_add_driver+0x16d/0x2b0
[   21.869377]  [<ffffffff8133b6dc>] driver_register+0x7c/0x160
[   21.875220]  [<ffffffff81296bda>] __pci_register_driver+0x6a/0xf0
[   21.881494]  [<ffffffffa01fe000>] ? 0xffffffffa01fdfff
[   21.886846]  [<ffffffffa01fe047>] i7core_init+0x47/0x1000 [i7core_edac]
[   21.893737]  [<ffffffff810001ce>] do_one_initcall+0x3e/0x180
[   21.899670]  [<ffffffff810a9b95>] sys_init_module+0xc5/0x220
[   21.905542]  [<ffffffff8149bc39>] system_call_fastpath+0x16/0x1b

Fix this by using ACCESS_ONCE() instead of rcu_dereference_check_mce()
over mcelog.next. Since the access to each entry is controlled by the
->finished field, ACCESS_ONCE() should work just fine. An rcu_dereference
is unnecessary here.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Suggested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-03-07 11:44:29 +01:00
Steven Whitehouse
35e478f422 GFS2: Flush pending glock work when evicting an inode
This ensures that we will not try to access the inode thats
being flushed via the glock after it has been freed.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2012-03-07 10:43:02 +00:00
Heiko Stuebner
2e5ac94366 ARM: S3C24XX: remove call to s3c24xx_setup_clocks
As the clocks can calculate their rate themself now, there is no
need to set it statically.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 02:00:05 -08:00
Heiko Stuebner
9edc12a1a9 ARM: S3C24XX: add get_rate for clk_p on S3C2416/2443
Currently the rate of clk_p is calculated once and set through the
s3c24xx_setup_clocks call. As the clk_p is a child of clk_h we can
evaluate its divider and calculate the rate in get_rate.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 02:00:04 -08:00
Heiko Stuebner
b681bfcf48 ARM: S3C24XX: add get_rate for clk_h on S3C2416/2443
Currently the rate of clk_h is calculated once and set through the
s3c24xx_setup_clocks call. As the clk_h is a child of the prediv
we can evaluate its divider and calculate the rate in get_rate.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 02:00:04 -08:00
Heiko Stuebner
7d9811f11f ARM: S3C24XX: remove XXX_setup_clocks method from S3C2443
s3c2443_common_setup_clocks is always called through
s3c2443_common_init_clocks, so there is no need to call it separately.
It was also called twice through this separate call.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 02:00:04 -08:00
Heiko Stuebner
714cc3a574 ARM: S3C24XX: remove obsolete S3C2416_DMA option
The S3C2416 now reuses the dma selection of the S3C2443.
Therefore it is not necessary to keep the S3C2416_DMA option around.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:53:23 -08:00
Heiko Stuebner
46cdaba11d ARM: S3C24XX: Reuse S3C2443 dma for S3C2416
The dma controller is similar in S3C2443 and S3C2416 and has also
the same register layout with the same REQSEL-bits in the source
select.

The only small difference is the SIO channel of the S3C2443 for the
non-hsmmc controller which is not present on S3C2416/2450 and
second spi channel which is not present on the S3C2416.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:53:17 -08:00
Heiko Stuebner
b099095445 ARM: S3C24XX: Fix indentation of dma-s3c2443
Spaces seem to have slipped in at some point in the past.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:53:12 -08:00
Heiko Stuebner
2c5689a7c9 ARM: S3C24XX: Move device setup files to mach directory
Includes a small rename of the SETUP_TS option to a S3C24XX prefix.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:47:15 -08:00
Heiko Stuebner
ec2cc753f4 ARM: S3C24XX: Consolidate Simtec extensions
The Simtec extension didn't follow a specific naming scheme for files
and config options until now. This distributed the files throughout
the whole mach-s3c24xx directory.

This patch fixes the naming of files and option names and also creates
a simtec.h header instead of using many one-liners.

As the plat/audio-simtec.h only contains the platform-data struct now,
it can also move to include/sound in a later patch.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:47:11 -08:00
Heiko Stuebner
9072dc983f ARM: S3C24XX: move simtec-specific code to mach directory
This includes a rename of the pm-simtec.c to keep the simtec
extensions together a bit and also better naming of the Kconfig
options.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:47:05 -08:00
Heiko Stuebner
28c569f695 ARM: S3C24XX: Move common-smdk code to mach directory
This code is used by boards based on the S3C2410/S3C2440/S3C2416.
The patch includes also a rename of the option, as the smdk code
is not a mach itself, but only an extension with common code.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-07 01:47:01 -08:00
Lorenzo Pieralisi
a0feb6db0f ARM: 7358/1: perf: add PMU hotplug notifier
When a CPU is taken out of reset, either cold booted or hotplugged in,
some of its PMU registers can contain UNKNOWN values.

This patch adds a hotplug notifier to ARM core perf code so that upon
CPU restart the PMU unit is reset and becomes ready to use again.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 09:40:50 +00:00
Will Deacon
3f31ae1213 ARM: 7357/1: perf: fix overflow handling for xscale2 PMUs
xscale2 PMUs indicate overflow not via the PMU control register, but by
a separate overflow FLAG register instead.

This patch fixes the xscale2 PMU code to use this register to detect
to overflow and ensures that we clear any pending overflow when
disabling a counter.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 09:40:49 +00:00
Will Deacon
f6f5a30c83 ARM: 7356/1: perf: check that we have an event in the PMU IRQ handlers
The PMU IRQ handlers in perf assume that if a counter has overflowed
then perf must be responsible. In the paranoid world of crazy hardware,
this could be false, so check that we do have a valid event before
attempting to dereference NULL in the interrupt path.

Cc: <stable@vger.kernel.org>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 09:40:49 +00:00
Will Deacon
99c1745b9c ARM: 7355/1: perf: clear overflow flag when disabling counter on ARMv7 PMU
When disabling a counter on an ARMv7 PMU, we should also clear the
overflow flag in case an overflow occurred whilst stopping the counter.
This prevents a spurious overflow being picked up later and leading to
either false accounting or a NULL dereference.

Cc: <stable@vger.kernel.org>
Reported-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 09:40:49 +00:00
Will Deacon
5727347180 ARM: 7354/1: perf: limit sample_period to half max_period in non-sampling mode
On ARM, the PMU does not stop counting after an overflow and therefore
IRQ latency affects the new counter value read by the kernel. This is
significant for non-sampling runs where it is possible for the new value
to overtake the previous one, causing the delta to be out by up to
max_period events.

Commit a737823d ("ARM: 6835/1: perf: ensure overflows aren't missed due
to IRQ latency") attempted to fix this problem by allowing interrupt
handlers to pass an overflow flag to the event update function, causing
the overflow calculation to assume that the counter passed through zero
when going from prev to new. Unfortunately, this doesn't work when
overflow occurs on the perf_task_tick path because we have the flag
cleared and end up computing a large negative delta.

This patch removes the overflow flag from armpmu_event_update and
instead limits the sample_period to half of the max_period for
non-sampling profiling runs.

Cc: <stable@vger.kernel.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07 09:40:48 +00:00
Kukjin Kim
880bcd4a83 Merge branch 'topic/cleanup-s3c24xx' into next/cleanup-s3c24xx
Conflicts:
	arch/arm/mach-s3c24xx/include/mach/system.h
2012-03-07 01:36:33 -08:00
Jason Gerecke
19d57d3a14 Input: wacom - fix 3rd-gen Bamboo MT when 4+ fingers are in use
The message count field uses three bits of storage, not two.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Acked-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2012-03-07 00:45:26 -08:00
Takashi Iwai
546bb67852 ALSA: hda/realtek - Reuse init_hook for ALC269VB coef setup
Move the currently unused spec->init_hook at the beginning of the init
sequence so that the recently added ALC269VB coef setup can be put
there.  The alc_init() is again clean without an ugly check.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-03-07 09:07:04 +01:00
Takashi Iwai
fc7a1627c1 Merge branch 'fix/hda' into topic/hda
Conflicts:
	sound/pci/hda/patch_realtek.c
2012-03-07 09:05:15 +01:00