sfrench/cifs-2.6.git
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 11 Nov 2009 19:35:04 +0000 (11:35 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - possible read past array alc88[02]_parse_auto_config()
  sound: rawmidi: fix MIDI device O_APPEND error handling
  sound: rawmidi: fix checking of O_APPEND when opening MIDI device
  sound: rawmidi: fix double init when opening MIDI device with O_APPEND
  ALSA: hda - Avoid quirk for HP dc5750
  ALSA: hda - Tweak OLPC XO-1.5 microphone bias
  ALSA: hda: Use model=auto quirk for Sony VAIO VGN-FW170J using ALC262

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Wed, 11 Nov 2009 19:34:14 +0000 (11:34 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/PCI: Adjust GFP mask handling for coherent allocations
  PCI ASPM: fix oops on root port removal

14 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Wed, 11 Nov 2009 19:33:08 +0000 (11:33 -0800)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: pasemi_defconfig update
  powerpc: 2.6.32 update of defconfigs for embedded 6xx/7xxx, 8xx, 8{3,5,6}xxx
  powerpc/8xxx: enable IPsec ESP by default on mpc83xx/mpc85xx
  powerpc/83xx: Fix u-boot partion size for MPC8377E-WLAN boards
  powerpc/85xx: Fix USB GPIOs for MPC8569E-MDS boards
  powerpc/82xx: kmalloc failure ignored in ep8248e_mdio_probe()
  powerpc/85xx: sbc8548 - fixup of PCI-e related DTS fields

14 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Wed, 11 Nov 2009 19:32:42 +0000 (11:32 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: Use a definition for the userspace cmpxchg emulation syscall
  [ARM] Fix test for unimplemented ARM syscalls
  ARM: 5784/1: fix early boot machine ID mismatch error display
  [ARM] orion5x: update defconfig
  [ARM] Kirkwood: update defconfig
  [ARM] Kirkwood: clarify PCIe MEM bus/physical address distinction
  [ARM] kirkwood: fix PCI I/O port assignment
  [ARM] kirkwood: fix section mismatch
  [ARM] OpenRD base: Initialize PCI express and i2c
  [ARM] properly report mv78100 stepping A1
  ARM: 5780/1: KS8695: Fix macro definition bug in regs-switch.c
  ARM: 5779/1: ep93xx/micro9.c: fix implicit declaration of function __raw_readl and IOMEM
  RealView: Add sparsemem support for the RealView PBX platform
  RealView: Remove duplicated #define REALVIEW_SYS_FLAGS* statements
  RealView: Add default memory configuration
  Check whether the SCU was already initialised
  ARMv7: Check whether the SMP/nAMP mode was already enabled
  [ARM] pxa: fix resume failure by saving/restoring IPRx registers
  [ARM] pxa/palm: fix incorrect initialization of Palm Tungsten C keyboard
  [ARM] pxa/zaurus: fix NAND flash OOB layout for Borzoi

14 years agoMerge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Wed, 11 Nov 2009 19:32:04 +0000 (11:32 -0800)]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (52 commits)
  drm/kms: Init the CRTC info fields for modes forced from the command line.
  drm/radeon/r600: CS parser updates
  drm/radeon/kms: add debugfs for power management for AtomBIOS devices
  drm/radeon/kms: initial mode validation support
  drm/radeon/kms/atom/dce3: call transmitter init on mode set
  drm/radeon/kms: store detailed connector info
  drm/radeon/kms/atom/dce3: fix up usPixelClock calculation for Transmitter tables
  drm/radeon/kms/r600: fix rs880 support v2
  drm/radeon/kms/r700: fix some typos in chip init
  drm/radeon/kms: remove some misleading debugging output
  drm/radeon/kms: stop putting VRAM at 0 in MC space on r600s.
  drm/radeon/kms: disable D1VGA and D2VGA if enabled
  drm/radeon/kms: Don't RMW CP_RB_CNTL
  drm/radeon/kms: fix coherency issues on AGP cards.
  drm/radeon/kms: fix rc410 suspend/resume.
  drm/radeon/kms: add quirk for hp dc5750
  drm/radeon/kms/atom: fix potential oops in spread spectrum code
  drm/kms: typo fix
  drm/radeon/kms/atom: Make card_info per device
  drm/radeon/kms/atom: Fix DVO support
  ...

14 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 11 Nov 2009 19:30:15 +0000 (11:30 -0800)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE
  highmem: Fix race in debug_kmap_atomic() which could cause warn_count to underflow
  rcu: Fix long-grace-period race between forcing and initialization
  uids: Prevent tear down race

14 years agoMerge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 11 Nov 2009 19:29:58 +0000 (11:29 -0800)]
Merge branch 'irq-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: try_one_irq() must be called with irq disabled

14 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 11 Nov 2009 19:29:34 +0000 (11:29 -0800)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Fix permission checks
  perf_events: Fix some typo in the perf events config description

14 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 11 Nov 2009 19:29:24 +0000 (11:29 -0800)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Use root_task_group_empty only with FAIR_GROUP_SCHED
  sched: Fix kernel-doc function parameter name

14 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 11 Nov 2009 19:29:10 +0000 (11:29 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, amd-ucode: Check UCODE_MAGIC before loading the container file
  x86: Fix error return sequence in __ioremap_caller()
  x86: Add Phoenix/MSC BIOSes to lowmem corruption list

14 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Wed, 11 Nov 2009 19:28:11 +0000 (11:28 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: partial revert to fix double brelse WARNING()
  ext4: Fix return value of ext4_split_unwritten_extents() to fix direct I/O
  ext4: code clean up for dio fallocate handling
  ext4: skip conversion of uninit extents after direct IO if there isn't any
  ext4: fix ext4_ext_direct_IO()'s return value after converting uninit extents
  ext4: discard preallocation when restarting a transaction during truncate

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Wed, 11 Nov 2009 19:27:49 +0000 (11:27 -0800)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] SBC-FITPC2 watchdog driver registration fix

14 years agoMerge branch 'fixes-s3c-2632-rc6' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Wed, 11 Nov 2009 19:27:26 +0000 (11:27 -0800)]
Merge branch 'fixes-s3c-2632-rc6' of git://git.fluff.org/bjdooks/linux

* 'fixes-s3c-2632-rc6' of git://git.fluff.org/bjdooks/linux:
  ARM: S3C64XX: DMA: Free node for non-circular queues
  ARM: S3C64XX: DMA: Callback with correct buffer pointer
  ARM: S3C64XX: DMA: Make src and dst transfer size same
  ARM: S3C64XX: DMA: Unify callback functions for success/failure
  ARM: S3C64XX: DMA: Protect buffer pointers while manipulation
  ARM: S3C64XX: Tidy definition and comments in s3c_dma_has_circular()
  ARM: S3C64XX: Remove duplicate s3c_dma_has_circular() definition for S3C64xx.
  ARM: SMDK6410: Allocate more GPIO space for WM1190-EV1
  ARM: SMDK6410: Configure GPIO pull up for WM835x IRQ line

14 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Wed, 11 Nov 2009 19:26:42 +0000 (11:26 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (27 commits)
  V4L/DVB (13314): saa7134: set ts_force_val for the Hauppauge WinTV HVR-1150
  V4L/DVB (13313): saa7134: add support for FORCE_TS_VALID mode for mpeg ts input
  V4L/DVB (13311): uvcvideo: Fix compilation warning with 2.6.32 due to type mismatch with abs()
  V4L/DVB (13309): uvcvideo: Ignore the FIX_BANDWIDTH for compressed video
  V4L/DVB (13287): ce6230 - saa7164-cmd: Fix wrong sizeof
  V4L/DVB (13286): pxa-camera: Fix missing sched.h
  V4L/DVB (13264): gspca_mr97310a: Change vstart for CIF sensor type 1 cams
  V4L/DVB (13257): gspca - m5602-s5k4aa: Add vflip for Fujitsu Amilo Xi 2528
  V4L/DVB (13256): gspca - m5602-s5k4aa: Add another MSI GX700 vflip quirk
  V4L/DVB (13255): gspca - m5602-s5k4aa: Add vflip quirk for the Bruneinit laptop
  V4L/DVB (13240): firedtv: fix regression: tuning fails due to bogus error return
  V4L/DVB (13237): firedtv: length field corrupt in ca2host if length>127
  V4L/DVB (13230): s2255drv: Don't conditionalize video buffer completion on waiting processes
  V4L/DVB (13202): smsusb: add autodetection support for three additional Hauppauge USB IDs
  V4L/DVB (13190): em28xx: fix panic that can occur when starting audio streaming
  V4L/DVB (13170): bttv: Fix reversed polarity error when switching video standard
  V4L/DVB (13169): bttv: Fix potential out-of-order field processing
  V4L/DVB (13167): pt1: Fix a compile error on arm
  V4L/DVB (13132): fix use-after-free Oops, resulting from a driver-core API change
  V4L/DVB (13131): pxa_camera: fix camera pixel format configuration
  ...

14 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Wed, 11 Nov 2009 07:10:31 +0000 (08:10 +0100)]
Merge branch 'fix/hda' into for-linus

14 years agoALSA: hda - possible read past array alc88[02]_parse_auto_config()
Roel Kluin [Tue, 10 Nov 2009 19:11:55 +0000 (20:11 +0100)]
ALSA: hda - possible read past array alc88[02]_parse_auto_config()

The test of index `i' is after the read - too late - and
unsafe: if snd_hda_get_connections() fails in the last
iteration a read beyond the array is possible.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agopowerpc: pasemi_defconfig update
Olof Johansson [Tue, 6 Oct 2009 15:52:50 +0000 (10:52 -0500)]
powerpc: pasemi_defconfig update

pasemi_defconfig hasn't been updated for a year.

Mostly a refresh of defaults, but this also disables 64K pages.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agoMerge commit 'kumar/merge' into merge
Benjamin Herrenschmidt [Wed, 11 Nov 2009 04:43:25 +0000 (15:43 +1100)]
Merge commit 'kumar/merge' into merge

14 years agoMerge branch 'for-rmk' of git://linux-arm.org/linux-2.6
Russell King [Tue, 10 Nov 2009 23:37:21 +0000 (23:37 +0000)]
Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6

14 years agosound: rawmidi: fix MIDI device O_APPEND error handling
Clemens Ladisch [Wed, 21 Oct 2009 07:11:43 +0000 (09:11 +0200)]
sound: rawmidi: fix MIDI device O_APPEND error handling

Commit 9a1b64caac82aa02cb74587ffc798e6f42c6170a in 2.6.30 broke the
error handling code in rawmidi_open_priv().

If only the output substream of a RawMIDI device has been opened and
if this device is then opened with O_RDWR | O_APPEND and if the
initialization of the input substream fails (either because of low
memory or because the device driver's open callback fails), then the
runtime structure of the already open output substream will be freed
and all following writes through the first handle will cause
snd_rawmidi_write() to use the NULL runtime pointer.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agosound: rawmidi: fix checking of O_APPEND when opening MIDI device
Clemens Ladisch [Wed, 21 Oct 2009 07:10:16 +0000 (09:10 +0200)]
sound: rawmidi: fix checking of O_APPEND when opening MIDI device

Commit 9a1b64caac82aa02cb74587ffc798e6f42c6170a in 2.6.30 dropped the
check that a substream must already have been opened with O_APPEND to be
able to open it a second time.

This would make it possible for a substream to be switched to append
mode, which would mean that non-atomic writes would fail unexpectedly.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agosound: rawmidi: fix double init when opening MIDI device with O_APPEND
Clemens Ladisch [Wed, 21 Oct 2009 07:09:38 +0000 (09:09 +0200)]
sound: rawmidi: fix double init when opening MIDI device with O_APPEND

Commit 9a1b64caac82aa02cb74587ffc798e6f42c6170a in 2.6.30 moved the
substream initialization code to where it would be executed every time
the substream is opened.

This had the consequence that any further opening would drop and leak
the data in the existing buffer, and that the device driver's open
callback would be called multiple times, unexpectedly.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda - Avoid quirk for HP dc5750
Takashi Iwai [Tue, 10 Nov 2009 15:08:45 +0000 (16:08 +0100)]
ALSA: hda - Avoid quirk for HP dc5750

The present quirk for HP dc5750 seems broken and maps the pins wrongly.
Since the auto-parser works well for this device, set the default entry
to use model=auto.

Reference: Novell bnc#552154
https://bugzilla.novell.com/show_bug.cgi?id=552154

Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years ago[WATCHDOG] SBC-FITPC2 watchdog driver registration fix
Denis Turischev [Thu, 5 Nov 2009 11:32:40 +0000 (13:32 +0200)]
[WATCHDOG] SBC-FITPC2 watchdog driver registration fix

This patch fixes device registration process.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
14 years agoARM: Use a definition for the userspace cmpxchg emulation syscall
Russell King [Mon, 9 Nov 2009 23:53:29 +0000 (23:53 +0000)]
ARM: Use a definition for the userspace cmpxchg emulation syscall

Use a definition for the cmpxchg SWI instead of hard-coding the number.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
14 years agoALSA: hda - Tweak OLPC XO-1.5 microphone bias
Daniel Drake [Mon, 9 Nov 2009 15:17:24 +0000 (15:17 +0000)]
ALSA: hda - Tweak OLPC XO-1.5 microphone bias

Our contacts at Conexant suggested that we reduce the external
microphone bias to 50% in order to center the input signal with
the DC input range of the codec. This is because the microphone
port is DC coupled for potential use with sensors.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agox86, amd-ucode: Check UCODE_MAGIC before loading the container file
Borislav Petkov [Thu, 29 Oct 2009 13:45:52 +0000 (14:45 +0100)]
x86, amd-ucode: Check UCODE_MAGIC before loading the container file

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20091029134552.GC30802@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agodrm/kms: Init the CRTC info fields for modes forced from the command line.
Francisco Jerez [Sat, 7 Nov 2009 15:27:32 +0000 (16:27 +0100)]
drm/kms: Init the CRTC info fields for modes forced from the command line.

Fixes fdo bug 24710.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/r600: CS parser updates
Alex Deucher [Mon, 9 Nov 2009 21:41:21 +0000 (16:41 -0500)]
drm/radeon/r600: CS parser updates

Add some additional regs that require relocs.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agohighmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE
Soeren Sandmann [Wed, 28 Oct 2009 17:56:35 +0000 (18:56 +0100)]
highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE

Previously calling debug_kmap_atomic() with these types would
cause spurious warnings.

(triggered by SysProf using perf events)

Signed-off-by: Soeren Sandmann Pedersen <sandmann@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: a.p.zijlstra@chello.nl
Cc: <stable@kernel.org> # .31.x
LKML-Reference: <ye8vdhz8krw.fsf@camel23.daimi.au.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agohighmem: Fix race in debug_kmap_atomic() which could cause warn_count to underflow
Soeren Sandmann [Wed, 28 Oct 2009 17:55:36 +0000 (18:55 +0100)]
highmem: Fix race in debug_kmap_atomic() which could cause warn_count to underflow

debug_kmap_atomic() tries to prevent ever printing more than 10
warnings, but it does so by testing whether an unsigned integer
is equal to 0. However, if the warning is caused by a nested
IRQ, then this counter may underflow and the stream of warnings
will never end.

Fix that by using a signed integer instead.

Signed-off-by: Soeren Sandmann Pedersen <sandmann@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: a.p.zijlstra@chello.nl
Cc: <stable@kernel.org> # .31.x
LKML-Reference: <ye8zl7b8ktj.fsf@camel23.daimi.au.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoARM: S3C: Merge fixes-s3c64xx-dma
Ben Dooks [Mon, 9 Nov 2009 23:52:34 +0000 (23:52 +0000)]
ARM: S3C: Merge fixes-s3c64xx-dma

Merge branch 'fixes-s3c64xx-dma' into fixes-s3c-2632-rc6

14 years agoARM: S3C64XX: DMA: Free node for non-circular queues
Jassi Brar [Thu, 5 Nov 2009 04:44:39 +0000 (13:44 +0900)]
ARM: S3C64XX: DMA: Free node for non-circular queues

We need to free the buff and lli nodes if the buffer queue is
not CIRCULAR.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: S3C64XX: DMA: Callback with correct buffer pointer
Jassi Brar [Thu, 5 Nov 2009 04:44:33 +0000 (13:44 +0900)]
ARM: S3C64XX: DMA: Callback with correct buffer pointer

buffdone callback should be called per buffer request with pointer
to the latest serviced request.
'next' should point to the one next to currently active.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: S3C64XX: DMA: Make src and dst transfer size same
Jassi Brar [Thu, 5 Nov 2009 04:44:45 +0000 (13:44 +0900)]
ARM: S3C64XX: DMA: Make src and dst transfer size same

Some devices don't seem to work if the source and desitnation transfer
widths are not same. For example, SPI dma xfers, with 8bits/word,
don't work without this patch.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: S3C64XX: DMA: Unify callback functions for success/failure
Jassi Brar [Thu, 5 Nov 2009 04:44:26 +0000 (13:44 +0900)]
ARM: S3C64XX: DMA: Unify callback functions for success/failure

Replace s3c64xx_dma_tcirq and s3c64xx_dma_errirq with the common
s3c64xx_dma_buffdone.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: S3C64XX: DMA: Protect buffer pointers while manipulation
Jassi Brar [Thu, 5 Nov 2009 04:44:20 +0000 (13:44 +0900)]
ARM: S3C64XX: DMA: Protect buffer pointers while manipulation

Ensure the DMA buffer points are not updated from
another source during the process of enquing a buffer.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
[ben-linux@fluff.org: Updated patch comment]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: S3C64XX: Tidy definition and comments in s3c_dma_has_circular()
Ben Dooks [Mon, 9 Nov 2009 23:45:47 +0000 (23:45 +0000)]
ARM: S3C64XX: Tidy definition and comments in s3c_dma_has_circular()

The recent changes to arch/arm/mach-s3c6400/include/mach/dma.h have
left an out of date comment in there as well as accidentally changing
the type of the function.

Fix the commit 54489cd46a3a268ed981c681726c6d690883f076

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: S3C64XX: Remove duplicate s3c_dma_has_circular() definition for S3C64xx.
Maurus Cuelenaere [Wed, 4 Nov 2009 12:13:29 +0000 (13:13 +0100)]
ARM: S3C64XX: Remove duplicate s3c_dma_has_circular() definition for S3C64xx.

This patch removes the duplicated s3c_dma_has_circular() definition and so fixes
compilation for S3C64xx.

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: SMDK6410: Allocate more GPIO space for WM1190-EV1
Mark Brown [Tue, 3 Nov 2009 14:42:10 +0000 (14:42 +0000)]
ARM: SMDK6410: Allocate more GPIO space for WM1190-EV1

The WM835x has some GPIOs on it, allocate some space so we can use
them with gpiolib.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoARM: SMDK6410: Configure GPIO pull up for WM835x IRQ line
Mark Brown [Tue, 3 Nov 2009 14:42:04 +0000 (14:42 +0000)]
ARM: SMDK6410: Configure GPIO pull up for WM835x IRQ line

When used with the WM1190-EV1 board we can use the internal pull up
resistor of the CPU to provide the required pull for the IRQ line.
Without this interrupts from the WM835x don't work in the default
WM1190-EV1 hardwaer configuration.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agomtd/maps: Fix accidental removal in Makefile
Atsushi Nemoto [Mon, 9 Nov 2009 23:21:19 +0000 (23:21 +0000)]
mtd/maps: Fix accidental removal in Makefile

The commit d79c326 ("gpio-addr-flash: new driver for GPIO assisted
flash addressing") removed two lines from the Makefile by accident.
Though I'm not sure how this accident happened, this patch reverts the
removal.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoALSA: hda: Use model=auto quirk for Sony VAIO VGN-FW170J using ALC262
Daniel T Chen [Mon, 9 Nov 2009 00:03:55 +0000 (19:03 -0500)]
ALSA: hda: Use model=auto quirk for Sony VAIO VGN-FW170J using ALC262

BugLink: https://bugs.launchpad.net/bugs/478309
The internal microphone on this VAIO model does not work unless the
"auto" quirk is used.

Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Mon, 9 Nov 2009 17:58:31 +0000 (09:58 -0800)]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Add an interface to lock/unlock an I2C bus segment
  i2c-piix4: Modify code name SB900 to Hudson-2

14 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Mon, 9 Nov 2009 17:57:02 +0000 (09:57 -0800)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md/raid5: make sure curr_sync_completes is uptodate when reshape starts
  md: don't clear endpoint for resync when resync is interrupted.

14 years agoksm: cond_resched in unstable tree
Hugh Dickins [Mon, 9 Nov 2009 15:58:23 +0000 (15:58 +0000)]
ksm: cond_resched in unstable tree

KSM needs a cond_resched() for CONFIG_PREEMPT_NONE, in its unbounded
search of the unstable tree.  The stable tree cases already have one,
and originally there was one down inside get_user_pages();
but I missed it when I converted to follow_page() instead.

Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Acked-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Mon, 9 Nov 2009 17:52:55 +0000 (09:52 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix missing cleanup of gc cache on error cases
  nilfs2: fix kernel oops in error case of nilfs_ioctl_move_blocks

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Mon, 9 Nov 2009 17:51:42 +0000 (09:51 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits)
  net/fsl_pq_mdio: add module license GPL
  can: fix WARN_ON dump in net/core/rtnetlink.c:rtmsg_ifinfo()
  can: should not use __dev_get_by_index() without locks
  hisax: remove bad udelay call to fix build error on ARM
  ipip: Fix handling of DF packets when pmtudisc is OFF
  qlge: Set PCIe reset type for EEH to fundamental.
  qlge: Fix early exit from mbox cmd complete wait.
  ixgbe: fix traffic hangs on Tx with ioatdma loaded
  ixgbe: Fix checking TFCS register for TXOFF status when DCB is enabled
  ixgbe: Fix gso_max_size for 82599 when DCB is enabled
  macsonic: fix crash on PowerBook 520
  NET: cassini, fix lock imbalance
  ems_usb: Fix byte order issues on big endian machines
  be2net: Bug fix to send config commands to hardware after netdev_register
  be2net: fix to set proper flow control on resume
  netfilter: xt_connlimit: fix regression caused by zero family value
  rt2x00: Don't queue ieee80211 work after USB removal
  Revert "ipw2200: fix oops on missing firmware"
  decnet: netdevice refcount leak
  netfilter: nf_nat: fix NAT issue in 2.6.30.4+
  ...

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Mon, 9 Nov 2009 17:51:15 +0000 (09:51 -0800)]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: Move of_set_property_mutex acquisition outside of devtree_lock grab.
  sparc64: replace parentheses in pmul()
  sparc64: Add a comment about why we only use certain memory barriers these days.

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6
Linus Torvalds [Mon, 9 Nov 2009 17:50:55 +0000 (09:50 -0800)]
Merge git://git./linux/kernel/git/davem/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
  Revert "ide: try to use PIO Mode 0 during probe if possible"

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Mon, 9 Nov 2009 17:50:15 +0000 (09:50 -0800)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: don't use CIFSGetSrvInodeNumber in is_path_accessible
  cifs: clean up handling when server doesn't consistently support inode numbers

14 years agoMerge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Mon, 9 Nov 2009 17:49:58 +0000 (09:49 -0800)]
Merge branch 'sh/for-2.6.32' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Replace old style lock initializer
  sh: Account for cache aliases in flush_icache_range()
  sh: unwinder: Fix up invalid PC refetch in dwarf unwinder.
  serial: sh-sci: disable callback typo fix

14 years agoMerge branch 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev
Linus Torvalds [Mon, 9 Nov 2009 17:47:21 +0000 (09:47 -0800)]
Merge branch 'for-linus' of git://linux-m32r.org/git/takata/linux-2.6_dev

* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev:
  m32r: fix arch/m32r/boot/compressed/Makefile

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 9 Nov 2009 17:30:14 +0000 (09:30 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: snd-aica: declare MODULE_FIRMWARE
  ALSA: hda - Don't initialize CORB/RIRB for single_cmd mode
  ALSA: usb-audio: fix combine_word problem
  sound: Replace old style lock initializer
  ASoC: S3C64XX I2S: Enable audio-bus clock
  ASoC: OMAP: Don't try to set unsupported OMAP_DMA_DATA_BURST_16 on OMAP1
  ALSA: hda, move hp_bseries_system
  sound: Use KERN_WARNING instead of KERN_WARN, which does not exist
  ALSA: intel8x0: Mute External Amplifier by default for another Sony model
  ALSA: hda - Add OLPC XO-1.5 PCI ID
  ALSA: hda - Enable GPIO control for mute LED on HP systems

14 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Mon, 9 Nov 2009 17:28:42 +0000 (09:28 -0800)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: sleep: another HP/Compaq DMI entries for init_set_sci_en_on_resume
  ACPI: add DMI entry for SCI_EN resume quirk on HP dv4
  thermal: sysfs-api.txt - document passive attribute for thermal zones
  thermal: sysfs-api.txt - reformat for improved readability
  acpi: thermal: Add EOL to the trip_point_N_type strings
  ACPI: Move dereference after NULL test
  ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."
  ACPI: add __cpuinit to acpi_processor_add()
  acpi-power-meter: Don't leak ACPI error codes to userspace
  eeepc-laptop: don't enable camera at startup if it's already on.
  Revert "eeepc-laptop: Prevent a panic when disabling RT2860 wireless when associated"
  ACPI: clean up video.c boundary checks and types

14 years agosh: Replace old style lock initializer
Thomas Gleixner [Fri, 6 Nov 2009 22:42:05 +0000 (22:42 +0000)]
sh: Replace old style lock initializer

SPIN_LOCK_UNLOCKED is deprecated. Use __SPIN_LOCK_UNLOCKED instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosh: Account for cache aliases in flush_icache_range()
Matt Fleming [Thu, 5 Nov 2009 23:14:39 +0000 (23:14 +0000)]
sh: Account for cache aliases in flush_icache_range()

The icache may also contain aliases so we must account for them just
like we do when manipulating the dcache. We usually get away with
aliases in the icache because the instructions that are read from memory
are read-only, i.e. they never change. However, the place where this
bites us is when the code has been modified.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosparc: Move of_set_property_mutex acquisition outside of devtree_lock grab.
David S. Miller [Mon, 9 Nov 2009 01:41:20 +0000 (17:41 -0800)]
sparc: Move of_set_property_mutex acquisition outside of devtree_lock grab.

Otherwise we try to sleep with preemption disabled, etc.

Noticed by Thomas Gleixner.

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agom32r: fix arch/m32r/boot/compressed/Makefile
Hirokazu Takata [Sun, 8 Nov 2009 23:51:35 +0000 (08:51 +0900)]
m32r: fix arch/m32r/boot/compressed/Makefile

- Fix a comment string
- Fix a typo of $(suffix-y)

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
14 years agoext4: partial revert to fix double brelse WARNING()
Theodore Ts'o [Sun, 8 Nov 2009 20:45:44 +0000 (15:45 -0500)]
ext4: partial revert to fix double brelse WARNING()

This is a partial revert of commit 6487a9d (only the changes made to
fs/ext4/namei.c), since it is causing the following brelse()
double-free warning when running fsstress on a file system with 1k
blocksize and we run into a block allocation failure while converting
a single-block directory to a multi-block hash-tree indexed directory.

WARNING: at fs/buffer.c:1197 __brelse+0x2e/0x33()
Hardware name:
VFS: brelse: Trying to free free buffer
Modules linked in:
Pid: 2226, comm: jbd2/sdd-8 Not tainted 2.6.32-rc6-00577-g0003f55 #101
Call Trace:
 [<c01587fb>] warn_slowpath_common+0x65/0x95
 [<c0158869>] warn_slowpath_fmt+0x29/0x2c
 [<c021168e>] __brelse+0x2e/0x33
 [<c0288a9f>] jbd2_journal_refile_buffer+0x67/0x6c
 [<c028a9ed>] jbd2_journal_commit_transaction+0x319/0x14d8
 [<c0164d73>] ? try_to_del_timer_sync+0x58/0x60
 [<c0175bcc>] ? sched_clock_cpu+0x12a/0x13e
 [<c017f6b4>] ? trace_hardirqs_off+0xb/0xd
 [<c0175c1f>] ? cpu_clock+0x3f/0x5b
 [<c017f6ec>] ? lock_release_holdtime+0x36/0x137
 [<c0664ad0>] ? _spin_unlock_irqrestore+0x44/0x51
 [<c0180af3>] ? trace_hardirqs_on_caller+0x103/0x124
 [<c0180b1f>] ? trace_hardirqs_on+0xb/0xd
 [<c0164d73>] ? try_to_del_timer_sync+0x58/0x60
 [<c0290d1c>] kjournald2+0x11a/0x310
 [<c017118e>] ? autoremove_wake_function+0x0/0x38
 [<c0290c02>] ? kjournald2+0x0/0x310
 [<c0170ee6>] kthread+0x66/0x6b
 [<c0170e80>] ? kthread+0x0/0x6b
 [<c01251b3>] kernel_thread_helper+0x7/0x10
---[ end trace 5579351b86af61e3 ]---

Commit 6487a9d was an attempt some buffer head leaks in an ENOSPC
error path, but in some cases it actually results in an excess ENOSPC,
as shown above.  Fixing this means cleaning up who is responsible for
releasing the buffer heads from the callee to the caller of
add_dirent_to_buf().

Since that's a relatively complex change, and we're late in the rcX
development cycle, I'm reverting this now, and holding back a more
complete fix until after 2.6.32 ships.  We've lived with this
buffer_head leak on ENOSPC in ext3 and ext4 for a very long time; a
few more months won't kill us.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Curt Wohlgemuth <curtw@google.com>
14 years ago[ARM] Fix test for unimplemented ARM syscalls
Russell King [Sun, 8 Nov 2009 20:05:28 +0000 (20:05 +0000)]
[ARM] Fix test for unimplemented ARM syscalls

The existing test always failed since 'no' was always greater than
0x7ff.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agoMerge branch 'for-rmk' of git://git.marvell.com/orion
Russell King [Sun, 8 Nov 2009 16:40:38 +0000 (16:40 +0000)]
Merge branch 'for-rmk' of git://git.marvell.com/orion

14 years agoperf tools: Fix permission checks
Pekka Enberg [Sun, 8 Nov 2009 16:01:06 +0000 (18:01 +0200)]
perf tools: Fix permission checks

The perf_event_open() system call returns EACCES if the user is
not root which results in a very confusing error message:

  $ perf record -A -a -f

    Error: perfcounter syscall returned with -1 (Permission denied)

    Fatal: No CONFIG_PERF_EVENTS=y kernel support configured?

It turns out that's because perf tools are checking only for
EPERM. Fix that up to get a much better error message:

  $ perf record -A -a -f
    Fatal: Permission error - are you root?

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1257696066-4046-1-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86/PCI: Adjust GFP mask handling for coherent allocations
Jan Beulich [Sun, 8 Nov 2009 11:12:14 +0000 (12:12 +0100)]
x86/PCI: Adjust GFP mask handling for coherent allocations

Rather than forcing GFP flags and DMA mask to be inconsistent,
GFP flags should be determined even for the fallback device
through dma_alloc_coherent_mask()/dma_alloc_coherent_gfp_flags().

This restores 64-bit behavior as it was prior to commits
8965eb19386fdf5ccd0ef8b02593eb8560aa3416 and
4a367f3a9dbf2e7ffcee4702203479809236ee6e (not sure why there are
two of them), where GFP_DMA was forced on for 32-bit, but not
for 64-bit, with the slight adjustment that afaict even 32-bit
doesn't need this without CONFIG_ISA.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
LKML-Reference: <4AF18187020000780001D8AA@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agosched: Use root_task_group_empty only with FAIR_GROUP_SCHED
Cyrill Gorcunov [Mon, 26 Oct 2009 19:24:14 +0000 (22:24 +0300)]
sched: Use root_task_group_empty only with FAIR_GROUP_SCHED

root_task_group_empty is used only with FAIR_GROUP_SCHED
so if we use other scheduler options we get:

  kernel/sched.c:314: warning: 'root_task_group_empty' defined but not used

So move CONFIG_FAIR_GROUP_SCHED up that it covers
root_task_group_empty().

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20091026192414.GB5321@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoARM: 5784/1: fix early boot machine ID mismatch error display
Nicolas Pitre [Sat, 7 Nov 2009 06:35:06 +0000 (07:35 +0100)]
ARM: 5784/1: fix early boot machine ID mismatch error display

That code was refactored a long time ago, but one particular label
didn't get adjusted properly which broke the listing of supported
machines.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agox86: Fix error return sequence in __ioremap_caller()
Xiaotian Feng [Thu, 5 Nov 2009 02:43:51 +0000 (10:43 +0800)]
x86: Fix error return sequence in __ioremap_caller()

kernel missed to free memtype if get_vm_area_caller failed in
__ioremap_caller.

This patch introduces error path to fix this and cleans up the
repetitive error return sequences that contributed to the
creation of the bug.

Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <1257389031-20429-1-git-send-email-dfeng@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agosched: Fix kernel-doc function parameter name
Randy Dunlap [Fri, 6 Nov 2009 23:31:08 +0000 (15:31 -0800)]
sched: Fix kernel-doc function parameter name

Fix variable name in sched.c kernel-doc notation.

Fixes this DocBook warning:

 Warning(kernel/sched.c:2008): No description found for parameter
 'p' Warning(kernel/sched.c:2008): Excess function parameter 'k'
 description in 'kthread_bind'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
LKML-Reference: <4AF4B1BC.8020604@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agonilfs2: fix missing cleanup of gc cache on error cases
Ryusuke Konishi [Sun, 8 Nov 2009 03:09:24 +0000 (12:09 +0900)]
nilfs2: fix missing cleanup of gc cache on error cases

This fixes an -rc1 regression brought by the commit:
1cf58fa840472ec7df6bf2312885949ebb308853 ("nilfs2: shorten freeze
period due to GC in write operation v3").

Although the patch moved out a function call of
nilfs_ioctl_move_blocks() to nilfs_ioctl_clean_segments() from
nilfs_ioctl_prepare_clean_segments(), it didn't move corresponding
cleanup job needed for the error case.

This will move the missing cleanup job to the destination function.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Acked-by: Jiro SEKIBA <jir@unicus.jp>
14 years agonilfs2: fix kernel oops in error case of nilfs_ioctl_move_blocks
Ryusuke Konishi [Sat, 7 Nov 2009 09:45:16 +0000 (18:45 +0900)]
nilfs2: fix kernel oops in error case of nilfs_ioctl_move_blocks

This fixes a kernel oops reported by Markus Trippelsdorf in the email
titled "[NILFS users] kernel Oops while running nilfs_cleanerd".

The oops was caused by a bug of error path in
nilfs_ioctl_move_blocks() function, which was inlined in
nilfs_ioctl_clean_segments().

nilfs_ioctl_move_blocks checks duplication of blocks which will be
moved in garbage collection.  But, the check should have be done
within nilfs_ioctl_move_inode_block() to prevent list corruption among
buffers storing the target blocks.

To fix the kernel oops, this moves forward the duplication check
before the list insertion.

I also tested this for stable trees [2.6.30, 2.6.31].

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: stable <stable@kernel.org>
14 years agonet/fsl_pq_mdio: add module license GPL
Sebastian Siewior [Fri, 6 Nov 2009 08:50:28 +0000 (08:50 +0000)]
net/fsl_pq_mdio: add module license GPL

or it will taint the kernel and fail to load becuase
of_address_to_resource() is GPL only.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agocan: fix WARN_ON dump in net/core/rtnetlink.c:rtmsg_ifinfo()
Wolfgang Grandegger [Fri, 6 Nov 2009 23:53:13 +0000 (23:53 +0000)]
can: fix WARN_ON dump in net/core/rtnetlink.c:rtmsg_ifinfo()

On older kernels, e.g. 2.6.27, a WARN_ON dump in rtmsg_ifinfo()
is thrown when the CAN device is registered due to insufficient
skb space, as reported by various users. This patch adds the
rtnl_link_ops "get_size" to fix the problem. I think this patch
is required for more recent kernels as well, even if no WARN_ON
dumps are triggered. Maybe we also need "get_xstats_size" for
the CAN xstats.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agocan: should not use __dev_get_by_index() without locks
Eric Dumazet [Fri, 6 Nov 2009 00:23:01 +0000 (00:23 +0000)]
can: should not use __dev_get_by_index() without locks

bcm_proc_getifname() is called with RTNL and dev_base_lock
not held. It calls __dev_get_by_index() without locks, and
this is illegal (might crash)

Close the race by holding dev_base_lock and copying dev->name
in the protected section.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosparc64: replace parentheses in pmul()
Roel Kluin [Sun, 8 Nov 2009 08:26:56 +0000 (00:26 -0800)]
sparc64: replace parentheses in pmul()

`>>' has a higher precedence than `?' so src2 evaluated to
either 16 or 0 dependent on the bits set in rs2.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Sun, 8 Nov 2009 08:16:15 +0000 (09:16 +0100)]
Merge branch 'fix/hda' into for-linus

14 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Sun, 8 Nov 2009 08:16:06 +0000 (09:16 +0100)]
Merge branch 'fix/misc' into for-linus

14 years agoALSA: snd-aica: declare MODULE_FIRMWARE
Ben Hutchings [Sat, 7 Nov 2009 22:13:39 +0000 (22:13 +0000)]
ALSA: snd-aica: declare MODULE_FIRMWARE

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years ago[ARM] orion5x: update defconfig
Nicolas Pitre [Sun, 8 Nov 2009 01:59:20 +0000 (20:59 -0500)]
[ARM] orion5x: update defconfig

Signed-off-by: Nicolas Pitre <nico@marvell.com>
14 years ago[ARM] Kirkwood: update defconfig
Nicolas Pitre [Sun, 8 Nov 2009 01:36:02 +0000 (20:36 -0500)]
[ARM] Kirkwood: update defconfig

Signed-off-by: Nicolas Pitre <nico@marvell.com>
14 years ago[ARM] Kirkwood: clarify PCIe MEM bus/physical address distinction
Lennert Buytenhek [Sat, 7 Nov 2009 13:50:00 +0000 (14:50 +0100)]
[ARM] Kirkwood: clarify PCIe MEM bus/physical address distinction

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
14 years ago[ARM] kirkwood: fix PCI I/O port assignment
Lennert Buytenhek [Sat, 7 Nov 2009 13:49:18 +0000 (14:49 +0100)]
[ARM] kirkwood: fix PCI I/O port assignment

Instead of allocating PCI devices I/O port bus addresses from the
000xxxxx I/O port range as intended, due to a bus versus physical
address mixup, the Kirkwood PCIe handling code inadvertently
allocated I/O port bus addresses from the f20xxxxx address range
(which is the physical address range of the PCIe I/O mapping window),
but then direct all I/O port accesses to bus addresses 000xxxxx,
which would then not be decoded at all.

Fix this by setting the base address of the PCIe I/O space struct
resource to KIRKWOOD_PCIE_IO_BUS_BASE instead of the incorrect
KIRKWOOD_PCIE_IO_PHYS_BASE, and fix up __io() to expect addresses
offsetted by the former instead of the latter.

(The suggested fix of directing I/O port accesses from the host to
bus addresses f20xxxxx instead has the problem that assigning full
32bit I/O port bus addresses (f20xxxxx) doesn't work on all PCI
devices, as not all PCI devices implement full 32 bit BAR registers
for I/O ports.  We should really try to allocate I/O port bus
addresses that fit in 16 bits.)

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
14 years agogenirq: try_one_irq() must be called with irq disabled
Yong Zhang [Sat, 7 Nov 2009 03:16:13 +0000 (11:16 +0800)]
genirq: try_one_irq() must be called with irq disabled

Prarit reported:
=================================
[ INFO: inconsistent lock state ]
2.6.32-rc5 #1
---------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
 (&irq_desc_lock_class){?.-...}, at: [<ffffffff810c264e>] try_one_irq+0x32/0x138
{IN-HARDIRQ-W} state was registered at:
 [<ffffffff81095160>] __lock_acquire+0x2fc/0xd5d
 [<ffffffff81095cb4>] lock_acquire+0xf3/0x12d
 [<ffffffff814cdadd>] _spin_lock+0x40/0x89
 [<ffffffff810c3389>] handle_level_irq+0x30/0x105
 [<ffffffff81014e0e>] handle_irq+0x95/0xb7
 [<ffffffff810141bd>] do_IRQ+0x6a/0xe0
 [<ffffffff81012813>] ret_from_intr+0x0/0x16
irq event stamp: 195096
hardirqs last  enabled at (195096): [<ffffffff814cd7f7>] _spin_unlock_irq+0x3a/0x5c
hardirqs last disabled at (195095): [<ffffffff814cdbdd>] _spin_lock_irq+0x29/0x95
softirqs last  enabled at (195088): [<ffffffff81068c92>] __do_softirq+0x1c1/0x1ef
softirqs last disabled at (195093): [<ffffffff8101304c>] call_softirq+0x1c/0x30

other info that might help us debug this:
1 lock held by swapper/0:
 #0:  (kernel/irq/spurious.c:21){+.-...}, at: [<ffffffff81070cf2>]
run_timer_softirq+0x1a9/0x315

stack backtrace:
Pid: 0, comm: swapper Not tainted 2.6.32-rc5 #1
Call Trace:
 <IRQ>  [<ffffffff81093e94>] valid_state+0x187/0x1ae
 [<ffffffff81093fe4>] mark_lock+0x129/0x253
 [<ffffffff810951d4>] __lock_acquire+0x370/0xd5d
 [<ffffffff81095cb4>] lock_acquire+0xf3/0x12d
 [<ffffffff814cdadd>] _spin_lock+0x40/0x89
 [<ffffffff810c264e>] try_one_irq+0x32/0x138
 [<ffffffff810c2795>] poll_all_shared_irqs+0x41/0x6d
 [<ffffffff810c27dd>] poll_spurious_irqs+0x1c/0x49
 [<ffffffff81070d82>] run_timer_softirq+0x239/0x315
 [<ffffffff81068bd3>] __do_softirq+0x102/0x1ef
 [<ffffffff8101304c>] call_softirq+0x1c/0x30
 [<ffffffff81014b65>] do_softirq+0x59/0xca
 [<ffffffff810686ad>] irq_exit+0x58/0xae
 [<ffffffff81029b84>] smp_apic_timer_interrupt+0x94/0xba
 [<ffffffff81012a33>] apic_timer_interrupt+0x13/0x20

The reason is that try_one_irq() is called from hardirq context with
interrupts disabled and from softirq context (poll_all_shared_irqs())
with interrupts enabled.

Disable interrupts before calling it from poll_all_shared_irqs().

Reported-and-tested-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
LKML-Reference: <1257563773-4620-1-git-send-email-yong.zhang0@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
14 years agoV4L/DVB (13314): saa7134: set ts_force_val for the Hauppauge WinTV HVR-1150
Michael Krufky [Wed, 4 Nov 2009 17:23:57 +0000 (14:23 -0300)]
V4L/DVB (13314): saa7134: set ts_force_val for the Hauppauge WinTV HVR-1150

The Hauppauge WinTV HVR-1150 retail boards require the FORCE_TS_VALID bit
to be set in order to function properly. This change will work on the early
revisions on the board as well, but the final revision will not function
without this change.

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13313): saa7134: add support for FORCE_TS_VALID mode for mpeg ts input
Michael Krufky [Wed, 4 Nov 2009 17:19:35 +0000 (14:19 -0300)]
V4L/DVB (13313): saa7134: add support for FORCE_TS_VALID mode for mpeg ts input

When FORCE_TS_VALID mode is enabled, the saa713x will accept MPEG TS input
without requiring TS_VALID set high.  This is required for some new boards
to function properly, due to the hardware design implementation.

The configuration is toggled within the board setup configuration.  Boards
that do not have this bit set will function as before with no change.

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13311): uvcvideo: Fix compilation warning with 2.6.32 due to type mismatch...
Laurent Pinchart [Wed, 4 Nov 2009 16:11:10 +0000 (13:11 -0300)]
V4L/DVB (13311): uvcvideo: Fix compilation warning with 2.6.32 due to type mismatch with abs()

The abs() macro has changed in 2.6.32 and returns a long instead of an
int. Fix the driver to avoid compilation warnings.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13309): uvcvideo: Ignore the FIX_BANDWIDTH for compressed video
Laurent Pinchart [Wed, 4 Nov 2009 14:09:12 +0000 (11:09 -0300)]
V4L/DVB (13309): uvcvideo: Ignore the FIX_BANDWIDTH for compressed video

The FIX_BANDWIDTH quirk tries to work around cameras requesting the
maximum bandwidth regardless of the image size by computing a bandwidth
estimate. This works only for uncompressed frames.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13287): ce6230 - saa7164-cmd: Fix wrong sizeof
Jean Delvare [Wed, 4 Nov 2009 18:26:59 +0000 (15:26 -0300)]
V4L/DVB (13287): ce6230 - saa7164-cmd: Fix wrong sizeof

Which is why I have always preferred sizeof(struct foo) over
sizeof(var).

Cc: Antti Palosaari <crope@iki.fi>
Acked-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13286): pxa-camera: Fix missing sched.h
Jonathan Cameron [Wed, 4 Nov 2009 17:18:04 +0000 (14:18 -0300)]
V4L/DVB (13286): pxa-camera: Fix missing sched.h

Required for wakeup call.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13264): gspca_mr97310a: Change vstart for CIF sensor type 1 cams
Theodore Kilgore [Sun, 1 Nov 2009 15:59:42 +0000 (12:59 -0300)]
V4L/DVB (13264): gspca_mr97310a: Change vstart for CIF sensor type 1 cams

gspca_mr97310a: Change vstart for CIF sensor type 1 cams

This fixes the distortion at the end of the frame, and avoids the bad frame
dropping done because of this distortion, trippling the framerate!

Signed-off-by: Theodore Kilgore <kilgota@banach.math.auburn.edu>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13257): gspca - m5602-s5k4aa: Add vflip for Fujitsu Amilo Xi 2528
Erik Andrén [Sat, 3 Oct 2009 13:01:41 +0000 (10:01 -0300)]
V4L/DVB (13257): gspca - m5602-s5k4aa: Add vflip for Fujitsu Amilo Xi 2528

Adds a vflip quirk for the Fujitsu Amilo Xi 2528. Thanks to Evgeny for the report.

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13256): gspca - m5602-s5k4aa: Add another MSI GX700 vflip quirk
Erik Andrén [Sun, 27 Sep 2009 13:20:21 +0000 (10:20 -0300)]
V4L/DVB (13256): gspca - m5602-s5k4aa: Add another MSI GX700 vflip quirk

Adds another vflip quirk for the MSI GX700.
Thanks to John Katzmaier for reporting.

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13255): gspca - m5602-s5k4aa: Add vflip quirk for the Bruneinit laptop
Erik Andrén [Sun, 27 Sep 2009 13:11:43 +0000 (10:11 -0300)]
V4L/DVB (13255): gspca - m5602-s5k4aa: Add vflip quirk for the Bruneinit laptop

Adds a vflip quirk for the Bruneinit laptop. Thanks to Jörg for the report

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13240): firedtv: fix regression: tuning fails due to bogus error return
Stefan Richter [Sat, 17 Oct 2009 20:46:25 +0000 (17:46 -0300)]
V4L/DVB (13240): firedtv: fix regression: tuning fails due to bogus error return

Since 2.6.32(-rc1), DVB core checks the return value of
dvb_frontend_ops.set_frontend.  Now it becomes apparent that firedtv
always returned a bogus value from its set_frontend method.

CC: stable@kernel.org
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13237): firedtv: length field corrupt in ca2host if length>127
Henrik Kurelid [Sat, 3 Oct 2009 08:37:58 +0000 (05:37 -0300)]
V4L/DVB (13237): firedtv: length field corrupt in ca2host if length>127

This solves a problem in firedtv that has become major for Swedish DVB-T
users the last month or so.  It will most likely solve issues seen by
other users as well.

If the length of an AVC message is greater than 127, the length field
should be encoded in LV mode instead of V mode. V mode can only be used
if the length is 127 or less. This patch ensures that the CA_PMT
message is always encoded in LV mode so PMT message of greater lengths
can be supported.

Signed-off-by: Henrik Kurelid <henrik@kurelid.se>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13230): s2255drv: Don't conditionalize video buffer completion on waiting...
Mike Isely [Wed, 23 Sep 2009 21:06:57 +0000 (18:06 -0300)]
V4L/DVB (13230): s2255drv: Don't conditionalize video buffer completion on waiting processes

The s2255 driver had logic which aborted processing of a video frame
if there was no process waiting on the video buffer in question.  That
simply doesn't work when the application is doing things in an
asynchronous manner.  If the application went to the trouble to queue
the buffer in the first place, then the driver should always attempt
to complete it - even if the application at that moment has its
attention turned elsewhere.  Applications which always blocked waiting
for I/O on the capture device would not have been affected by this.
Applications which *mostly* blocked waiting for I/O on the capture
device probably only would have been somewhat affected (frame lossage,
at a rate which goes up as the application blocks less).  Applications
which never blocked on the capture device (e.g. polling only) however
would never have been able to receive any video frames, since in that
case this "is anyone waiting on this?" check on the buffer never would
have evalutated true.  This patch just deletes that harmful check
against the buffer's wait queue.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
CC: stable@kernel.org
14 years agoV4L/DVB (13202): smsusb: add autodetection support for three additional Hauppauge...
Michael Krufky [Wed, 21 Oct 2009 21:27:29 +0000 (18:27 -0300)]
V4L/DVB (13202): smsusb: add autodetection support for three additional Hauppauge USB IDs

Add support for three new Hauppauge Device USB IDs:

2040:b900
2040:b910
2040:c000

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13190): em28xx: fix panic that can occur when starting audio streaming
Devin Heitmueller [Thu, 15 Oct 2009 04:14:34 +0000 (01:14 -0300)]
V4L/DVB (13190): em28xx: fix panic that can occur when starting audio streaming

Because the counters were not reset when starting up streaming, they would
be reused from the previous run.  This can result in cases such that when the
second instance of streaming starts up, the "cnt" variable in
em28xx_audio_isocirq() can end up being negative, resulting in attempting to
write to memory before the start of runtime->dma_area (as well as having a
negative number of bytes to copy).

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
CC: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13170): bttv: Fix reversed polarity error when switching video standard
Mike Isely [Mon, 21 Sep 2009 15:42:22 +0000 (12:42 -0300)]
V4L/DVB (13170): bttv: Fix reversed polarity error when switching video standard

The bttv driver function which handles switching of the video standard
(set_tvnorm() in bttv-driver.c) includes a check which can optionally
also reset the cropping configuration to a default value.  It is
"optional" based on a comparison of the cropcap parameters of the
previous vs the newly requested video standard.  The comparison is
being done with a memcmp(), a function which only returns a true value
if the comparison actually fails.

This if-statement appears to have been written to assume wrong
memcmp() semantics.  That is, it was re-initializing the cropping
configuration only if the new video standard did NOT have different
cropcap values.  That doesn't make any sense.  One definitely should
reset things if the cropcap parameters are different - if there's any
comparison to made at all.

The effect of this problem was that a transition from, say, PAL to
NTSC would leave in place old cropping setup that made sense for the
PAL geometry but not for NTSC.  If the application doesn't care about
cropping it also won't try to reset the cropping configuration,
resulting in an improperly cropped video frame.  In the case I was
testing this actually caused black video frames to be displayed.

Another interesting effect of this bug is that if one does something
which does NOT change the video standard and this function is run,
then the cropping setup gets reset anyway - again because of the
backwards comparison.  It turns out that just running anything which
merely opens and closes the video device node (e.g. v4l-info) will
cause this to happen.  One can argue that simply opening the device
node and not doing anything to it should not mess with any of its
state - but because of this behavior, any TV app which does such
things (e.g. xawtv) probably therefore doesn't see the problem.

The solution is to fix the sense of the if-statement.  It's easy to
see how this mistake could have been made given how memcmp() works.
The patch is therefore removal of a single "!" character from the
if-statement in set_tvnorm in bttv-driver.c.

Signed-off-by: Mike Isely <isely@pobox.com>
CC: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13169): bttv: Fix potential out-of-order field processing
Mike Isely [Mon, 21 Sep 2009 15:09:08 +0000 (12:09 -0300)]
V4L/DVB (13169): bttv: Fix potential out-of-order field processing

There is a subtle interaction in the bttv driver which can result in
fields being repeatedly processed out of order.  This is a problem
specifically when running in V4L2_FIELD_ALTERNATE mode (probably the
most common case).

1. The determination of which fields are associated with which buffers
happens in videobuf, before the bttv driver gets a chance to queue the
corresponding DMA.  Thus by the point when the DMA is queued for a
given buffer, the algorithm has to do the queuing based on the
buffer's already assigned field type - not based on which field is
"next" in the video stream.

2. The driver normally tries to queue both the top and bottom fields
at the same time (see bttv_irq_next_video()).  It tries to sort out
top vs bottom by looking at the field type for the next 2 available
buffers and assigning them appropriately.

3. However the bttv driver *always* actually processes the top field
first.  There's even an interrupt set aside for specifically
recognizing when the top field has been processed so that it can be
marked done even while the bottom field is still being DMAed.

Given all of the above, if one gets into a situation where
bttv_irq_next_video() gets entered when the first available buffer has
been pre-associated as a bottom field, then the function is going to
process the buffers out of order.  That first available buffer will be
put into the bottom field slot and the buffer after that will be put
into the top field slot.  Problem is, since the top field is always
processed first by the driver, then that second buffer (the one after
the first available buffer) will be the first one to be finished.
Because of the strict fifo handling of all video buffers, then that
top field won't be seen by the app until after the bottom field is
also processed.  Worse still, the app will get back the
chronologically later bottom field first, *before* the top field is
received.  The buffer's timestamps will even be backwards.

While not fatal to most TV apps, this behavior can subtlely degrade
userspace deinterlacing (probably will cause jitter).  That's probably
why it has gone unnoticed.  But it will also cause serious problems if
the app in question discards all but the latest received buffer (a
latency minimizing tactic) - causing one field to only ever be
displayed since the other is now always late.  Unfortunately once you
get into this state, you're stuck this way - because having consumed
two buffers, now the next time around the "first" available buffer
will again be a bottom field and the same thing happens.

How can we get into this state?  In a perfect world, where there's
always a few free buffers queued to the driver, it should be
impossible.  However if something disrupts streaming, e.g. if the
userspace app can't queue free buffers fast enough for a moment due
perhaps to a CPU scheduling glitch, then the driver can get
momentarily starved and some number of fields will be dropped.  That's
OK.  But if an odd number of fields get dropped, then that "first"
available buffer might be the bottom field and now we're stuck...

This patch fixes that problem by deliberately only setting up a single
field for one frame if we don't get a top field as the first available
buffer.  By purposely skipping the other field, then we only handle a
single buffer thus bringing things back into proper sync (i.e. top
field first) for the next frame.  To do this we just drop the few
lines in bttv_irq_next_video() that attempt to set up the second
buffer when that second buffer isn't for the bottom field.

This is definitely a problem in when in V4L2_FIELD_ALTERNATE mode.  In
the other modes this change either has no effect or doesn't harm
things any further anyway.

Signed-off-by: Mike Isely <isely@pobox.com>
CC: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
14 years agoV4L/DVB (13167): pt1: Fix a compile error on arm
HIRANO Takahito [Sun, 20 Sep 2009 11:57:49 +0000 (08:57 -0300)]
V4L/DVB (13167): pt1: Fix a compile error on arm

The lack of #include <linux/vmalloc.h> caused a compile error on some
architectures.

Signed-off-by: HIRANO Takahito <hiranotaka@zng.info>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>