GitHub/mt8127/android_kernel_alcatel_ttab.git
15 years agoALSA: hda - Show the actual chip name in 'unkown model' messages
Takashi Iwai [Mon, 18 May 2009 10:33:36 +0000 (12:33 +0200)]
ALSA: hda - Show the actual chip name in 'unkown model' messages

Show the actual chip name in 'unknown model..' info messages for
Realtek codecs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Split codec->name to vendor and chip name strings
Takashi Iwai [Sat, 16 May 2009 08:00:49 +0000 (10:00 +0200)]
ALSA: hda - Split codec->name to vendor and chip name strings

Split the name string in hda_codec struct to vendor_name and chip_name
strings to be stored directly from the preset name.
Since mostly only the chip name is referred in many patch_*.c, this
results in the reduction of many codes in the end.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - add controls to toggle DC bias on mic ports
Nickolas Lloyd [Fri, 15 May 2009 13:33:30 +0000 (15:33 +0200)]
ALSA: hda - add controls to toggle DC bias on mic ports

This patch adds a mixer control for the STAC92XX boards to control the
DC bias of mic ports, allowing recording from both powered and
non-powered sources.  It replaces the "Mic Output Switch" with "Mic Jack
Mode" to switch between Mic, Line In, and Line Out.

Signed-off-by: Nickolas Lloyd <ultrageek.lloyd@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Add a quirk entry for Macbook Pro 5,1
Takashi Iwai [Thu, 14 May 2009 16:20:33 +0000 (18:20 +0200)]
ALSA: hda - Add a quirk entry for Macbook Pro 5,1

Added the codec SSID for MacBook Pro 5,1 as compatible as MP51.
However, the headphone auto-muting function doesn't work.  So,
this is just a tentative solution.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Disable fallback to model=acer for Acer laptops
Takashi Iwai [Wed, 13 May 2009 09:32:52 +0000 (11:32 +0200)]
ALSA: hda - Disable fallback to model=acer for Acer laptops

The model=acer for ALC883/889 doesn't work well for the recent Acer
Aspire laptops.  Since model=auto works better nowadays, it's safer
to use the default fallback instead of the Acer specific one.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Add support of Samsung NC10 mini notebook
Chris Pockelé [Tue, 12 May 2009 06:08:53 +0000 (08:08 +0200)]
ALSA: hda - Add support of Samsung NC10 mini notebook

Add specific configuration for Samsung NC10 mini notebook.  Internal
mic/speakers will be correctly muted when plugging in external ones.
Mixer controls are added for speakers, headphones and PC beep.
"Boost" is added for the microphones.

Signed-off-by: Chris Pockelé <chris.pockele.f1@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'topic/hda-vt-spdif' into topic/hda
Takashi Iwai [Mon, 11 May 2009 08:23:36 +0000 (10:23 +0200)]
Merge branch 'topic/hda-vt-spdif' into topic/hda

15 years agoALSA: hda - Add missing models for Realtek codecs
Takashi Iwai [Mon, 11 May 2009 06:12:43 +0000 (08:12 +0200)]
ALSA: hda - Add missing models for Realtek codecs

Added the missing descriptions and the model names for Realtek codecs
to the documentation and the config table.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'fix/hda' into topic/hda
Takashi Iwai [Fri, 8 May 2009 14:03:20 +0000 (16:03 +0200)]
Merge branch 'fix/hda' into topic/hda

15 years agoALSA: hda - Clean up Realtek auto-mute unsol routines
Takashi Iwai [Fri, 8 May 2009 13:57:59 +0000 (15:57 +0200)]
ALSA: hda - Clean up Realtek auto-mute unsol routines

Most of unsol handlers defined in patch_realtek.c can be classified to
two types, mute via amp of pins and mute via ctl bits of pins.
Thus there are a big room to generalize each implementation.

This patch creates two generic functions, alc_automute_amp() and
alc_automute_pin().  The latter is actually changed from the previous
alc_sku_automute().  Each caller needs to initialize hp_pins and
speaker_pins properly at own init_hook.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Clean up for ALC262 HP model auto-mute functions
Takashi Iwai [Fri, 8 May 2009 12:31:55 +0000 (14:31 +0200)]
ALSA: hda - Clean up for ALC262 HP model auto-mute functions

Just clean up, no functional changes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix and clean up hippo-compat HP auto-muting
Takashi Iwai [Fri, 8 May 2009 12:11:43 +0000 (14:11 +0200)]
ALSA: hda - Fix and clean up hippo-compat HP auto-muting

The speaker auto-muting per HP plugging for ALC262 HIPPO and compatible
devices is slightly buggy as the "Master" or "Front" mixer control can
still toggle the speaker output even if the headphone is plugged.

This patch fixes the issue, and clean up the hippo-related codes
together with fixes of some inconsistent mixer names.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix secondary SPDIF on VT1708S and VT1702 codecs
Takashi Iwai [Thu, 7 May 2009 14:31:14 +0000 (16:31 +0200)]
ALSA: hda - Fix secondary SPDIF on VT1708S and VT1702 codecs

VIA VT1708S and VT1702 codecs can have two SPDIF outputs.  One of them
should have been handled as the extra digital out, but it's not
properly accessed.

This patch fixes the handling of the secondary SPDIF on these codecs
with the slave dig-out as found in patch_sigmatel.c.  This makes the
use of such a device easier (for normal users).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix line-in on Mac Mini Core2 Duo
Takashi Iwai [Thu, 7 May 2009 14:22:53 +0000 (16:22 +0200)]
ALSA: hda - Fix line-in on Mac Mini Core2 Duo

BIOS on Mac Mini Core2 Duo sets both INPUT and OUTPUT pinctl bits to
the line-in jack, and it confuses the driver as if it's a valid input.
This patch adds the check of OUTPUT bit so that the driver fixes the
invalid pin setup.

Tested-by: Tino Keitel <tino.keitel@gmx.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Add support for MacBook 5.1 (Aluminium)
Kacper Szczesniak [Thu, 7 May 2009 10:47:43 +0000 (12:47 +0200)]
ALSA: hda - Add support for MacBook 5.1 (Aluminium)

Signed-off-by: Kacper Szczesniak <kacper@qwe.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Addition for HP dv4-1222nr laptop support
James Gardiner [Sun, 3 May 2009 08:00:44 +0000 (04:00 -0400)]
ALSA: hda - Addition for HP dv4-1222nr laptop support

Signed-off-by: James Gardiner <renidragsemaj@yahoo.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix a typo in patch_realtek.c again
Takashi Iwai [Tue, 28 Apr 2009 11:03:19 +0000 (13:03 +0200)]
ALSA: hda - Fix a typo in patch_realtek.c again

The commmit dfed0ef9b3ff9e37903920b6938ed33344ad0b3d was reverted
accidentally by the merge of auto-detection fix patch.

Fixed again now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Don't enable auto-mute but for speakers in patch_realtek.c
Takashi Iwai [Tue, 28 Apr 2009 11:01:26 +0000 (13:01 +0200)]
ALSA: hda - Don't enable auto-mute but for speakers in patch_realtek.c

Enable auto-muting in model=auto only for devices with HP and speakers.
For devices with HP and line-outs, don't enable the auto-muting.

Also, add a debug print to show the auto-mute feature.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'topic/hda-realtek-amp' into topic/hda
Takashi Iwai [Tue, 28 Apr 2009 07:51:57 +0000 (09:51 +0200)]
Merge branch 'topic/hda-realtek-amp' into topic/hda

15 years agoMerge branch 'fix/hda' into topic/hda
Takashi Iwai [Tue, 28 Apr 2009 07:51:49 +0000 (09:51 +0200)]
Merge branch 'fix/hda' into topic/hda

15 years agoALSA: hda - Add amp initialization for realtek auto mode
Takashi Iwai [Wed, 22 Apr 2009 14:31:35 +0000 (16:31 +0200)]
ALSA: hda - Add amp initialization for realtek auto mode

In the realtek auto-probing mode, the initialization of amp with
some magic COEF or EAPD verbs is applied only when the codec SSID
has valid values to satisfy the realtek's definition.
However, many devices don't provide in that way, thus the device
doesn't work as is.

This patch allows the same initialization code even if the SSID
doesn't pass the bit test.  Also, alc_subsystem_id() is changed
just to check and define the type, so that it's called in the
parser, instead of the initializer.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix init verbs of AD1884A mobile model
Takashi Iwai [Thu, 23 Apr 2009 06:24:48 +0000 (08:24 +0200)]
ALSA: hda - Fix init verbs of AD1884A mobile model

The current ad1884a-mobile model has a problem that the speaker output
doesn't work sometimes after boot or power-saving on some HP laptops.
It seems that the verbs accessing to the non-functional widgets cause
this problem.

This patch simplifies the init verbs for mobile model not to touch
unnecessary setups so that it avoids the speaker-mute problem.

Reference: Novell bnc#495668
https://bugzilla.novell.com/show_bug.cgi?id=495668

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'fix/hda' into topic/hda
Takashi Iwai [Tue, 21 Apr 2009 16:37:53 +0000 (18:37 +0200)]
Merge branch 'fix/hda' into topic/hda

15 years agoALSA: hda - Add quirk for Packard Bell RS65
Takashi Iwai [Tue, 21 Apr 2009 16:36:30 +0000 (18:36 +0200)]
ALSA: hda - Add quirk for Packard Bell RS65

Added a quirk (model=m51va) for Packard Bell RS65 with ALC663.

Reference: Novell bnc#496787
https://bugzilla.novell.com/show_bug.cgi?id=496787

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix a typo in debug print for realtek auto-detection
Takashi Iwai [Tue, 21 Apr 2009 16:33:12 +0000 (18:33 +0200)]
ALSA: hda - Fix a typo in debug print for realtek auto-detection

The NID and ASS numbers were swapped...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - minor optimization in hda_set_power_state()
Takashi Iwai [Tue, 21 Apr 2009 11:37:29 +0000 (13:37 +0200)]
ALSA: hda - minor optimization in hda_set_power_state()

Check the target power-state before checking EAPD exception to reduce
unneeded verb executions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'topic/hda-cache' into topic/hda
Takashi Iwai [Tue, 21 Apr 2009 09:11:54 +0000 (11:11 +0200)]
Merge branch 'topic/hda-cache' into topic/hda

15 years agoALSA: hda - Add debug prints for Realtek auto-init
Takashi Iwai [Tue, 24 Mar 2009 06:43:24 +0000 (07:43 +0100)]
ALSA: hda - Add debug prints for Realtek auto-init

Added a couple of debug prints to show the checked id numbers in
alc_subsystem_id().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Retry codec-verbs at errors
Takashi Iwai [Tue, 24 Mar 2009 06:36:09 +0000 (07:36 +0100)]
ALSA: hda - Retry codec-verbs at errors

The current error-recovery scheme for the codec communication errors
doesn't work always well.  Especially falling back to the
single-command mode causes the fatal problem on many systems.

In this patch, the problematic verb is re-issued again after the error
(even with polling mode) instead of the single-cmd mode.  The
single-cmd mode will be used only when specified via the command
option explicitly, mainly just for testing.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Cache PCM and STREAM parameters queries
Takashi Iwai [Tue, 24 Mar 2009 06:32:14 +0000 (07:32 +0100)]
ALSA: hda - Cache PCM and STREAM parameters queries

Cache quries for PCM and STREAM parameters as well as ampcap and
pincap sharing the hash table.  This will reduce the superfluous
access of the same codec verbs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'fix/hda' into topic/hda
Takashi Iwai [Tue, 21 Apr 2009 05:41:12 +0000 (07:41 +0200)]
Merge branch 'fix/hda' into topic/hda

15 years agoALSA: hda - Add quirks for Realtek codecs
Kailang Yang [Tue, 21 Apr 2009 05:39:04 +0000 (07:39 +0200)]
ALSA: hda - Add quirks for Realtek codecs

- Support ASUS F81Se F5Q P80 U20A U80 U50 UX50 for ALC269
- Support ASUS F70SL UX20 X58LE F50Z N80Vc N81Te N505Tp Vx3V N5051A
  for ALC663
- Support DELL ZM1 for ALC272

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix alc662_init_verbs
Kailang Yang [Tue, 21 Apr 2009 05:35:25 +0000 (07:35 +0200)]
ALSA: hda - Fix alc662_init_verbs

Don't unmute unneeded amps for input mixers of ALC662 & co.
It caused possible recording noises.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Use snd_hda_codec_get_pincfg() in patch_ca0110.c
Takashi Iwai [Mon, 20 Apr 2009 08:51:11 +0000 (10:51 +0200)]
ALSA: hda - Use snd_hda_codec_get_pincfg() in patch_ca0110.c

Use the new function to reduce the access and allow the user setup
via sysfs, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix channels_max setting for CA0110
Takashi Iwai [Mon, 20 Apr 2009 08:49:25 +0000 (10:49 +0200)]
ALSA: hda - Fix channels_max setting for CA0110

Added the missing definition of max channels for CA0110, which resulted
in an error at opening PCM devices.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Set function_id only on FG nodes
Takashi Iwai [Fri, 17 Apr 2009 16:04:41 +0000 (18:04 +0200)]
ALSA: hda - Set function_id only on FG nodes

(Re)set function_id only from the value on FG nodes.
The current code overrides the value with the last widget.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Add upper-limit of mixer amp for AD1884A-laptop model, too
Takashi Iwai [Thu, 16 Apr 2009 12:19:19 +0000 (14:19 +0200)]
ALSA: hda - Add upper-limit of mixer amp for AD1884A-laptop model, too

Add the upper-limit of mixer amp for AD1884A-laptop model just like
the mobile model for some HP laptops.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Fix headphone-detection on some machines with STAC/IDT codecs
Takashi Iwai [Thu, 16 Apr 2009 10:20:24 +0000 (12:20 +0200)]
ALSA: hda - Fix headphone-detection on some machines with STAC/IDT codecs

When the headphone can have no unique DAC, the current code doesn't
check the HP-detection although it should.  Put the hp-detection check
before the DAC check to fix this bug.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Check strcpy length
Takashi Iwai [Thu, 16 Apr 2009 08:22:24 +0000 (10:22 +0200)]
ALSA: hda - Check strcpy length

Check the length to copy via strlen() beforehand to avoid the stack
corruption, or use strlcpy() to be safe in HD-audio codes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda - Add Creative CA0110-IBG support
Takashi Iwai [Thu, 16 Apr 2009 06:53:34 +0000 (08:53 +0200)]
ALSA: hda - Add Creative CA0110-IBG support

Added the support for Creative SB X-Fi boards with UAA (HD-audio) mode.
In the HD-audio mode, no multiple streams are supported by just it
behaves like a normal HD-audio device.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoALSA: hda_intel.c - Consolidate bitfields
Joe Perches [Wed, 15 Apr 2009 18:39:01 +0000 (11:39 -0700)]
ALSA: hda_intel.c - Consolidate bitfields

Commit fa00e046b41663cbda9b1affc0594669e5f14219
added a new bitfield not adjacent to other
bitfields in the same struct.  Moved the new one.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 15 Apr 2009 16:11:11 +0000 (09:11 -0700)]
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 - Fix the cmd cache keys for amp verbs
  ALSA: add missing definitions(letters) to HD-Audio.txt
  ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
  [ALSA] intel8x0: add one retry to the ac97_clock measurement routine
  [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine
  ALSA: hda - Avoid call of snd_jack_report at release
  ALSA: add private_data to struct snd_jack
  ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes
  ALSA: snd-usb-caiaq: clean up header includes
  ALSA: sound/pci: use memdup_user()
  ALSA: sound/usb: use memdup_user()
  ALSA: sound/isa: use memdup_user()
  ALSA: sound/core: use memdup_user()
  [ALSA] intel8x0: do not use zero value from PICB register
  [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable
  [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies
  [ALSA] hda_intel: fix unexpected ring buffer positions
  ASoC: Disable S3C64xx support in Kconfig
  ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Wed, 15 Apr 2009 16:04:12 +0000 (09:04 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Use DEFINE_SPINLOCK
  GFS2: cleanup file_operations mess
  GFS2: Move umount flush rwsem
  GFS2: Fix symlink creation race
  GFS2: Make quotad's waiting interruptible

15 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 15 Apr 2009 16:03:47 +0000 (09:03 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (28 commits)
  cfq-iosched: add close cooperator code
  cfq-iosched: log responsible 'cfqq' in idle timer arm
  cfq-iosched: tweak kick logic a bit more
  cfq-iosched: no need to save interrupts in cfq_kick_queue()
  brd: fix cacheflushing
  brd: support barriers
  swap: Remove code handling bio_alloc failure with __GFP_WAIT
  gfs2: Remove code handling bio_alloc failure with __GFP_WAIT
  ext4: Remove code handling bio_alloc failure with __GFP_WAIT
  dio: Remove code handling bio_alloc failure with __GFP_WAIT
  block: Remove code handling bio_alloc failure with __GFP_WAIT
  bio: add documentation to bio_alloc()
  splice: add helpers for locking pipe inode
  splice: remove generic_file_splice_write_nolock()
  ocfs2: fix i_mutex locking in ocfs2_splice_to_file()
  splice: fix i_mutex locking in generic_splice_write()
  splice: remove i_mutex locking in splice_from_pipe()
  splice: split up __splice_from_pipe()
  block: fix SG_IO to return a proper error value
  cfq-iosched: don't delay queue kick for a merged request
  ...

15 years agoMerge branch 'topic/hda' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 15:52:32 +0000 (17:52 +0200)]
Merge branch 'topic/hda' into for-linus

* topic/hda:
  ALSA: hda - Fix the cmd cache keys for amp verbs
  ALSA: add missing definitions(letters) to HD-Audio.txt

15 years agoALSA: hda - Fix the cmd cache keys for amp verbs
Takashi Iwai [Wed, 15 Apr 2009 15:48:35 +0000 (17:48 +0200)]
ALSA: hda - Fix the cmd cache keys for amp verbs

Fix the key value generation for get/set amp verbs.  The upper bits of
the parameter have to be combined with the verb value to be unique for
each direction/index of amp access.

This fixes the resume problem on some hardwares like Macbook after
the channel mode is changed.

Tested-by: Johannes Berg <johannes@sipsolutions.net>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
Linus Torvalds [Wed, 15 Apr 2009 15:42:40 +0000 (08:42 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: pseries/dtl.c should include asm/firmware.h
  powerpc: Fix data-corrupting bug in __futex_atomic_op
  powerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()
  powerpc: Allow 256kB pages with SHMEM
  powerpc: Document new FSL I2C bindings and cleanup
  powerpc/mm: Fix compile warning
  powerpc/85xx: TQM8548: update defconfig
  powerpc/85xx: TQM8548: use proper phy-handles for enet2 and enet3
  powerpc/85xx: TQM85xx: correct address of LM75 I2C device nodes
  powerpc: Add support for early tlbilx opcode
  powerpc: Fix tlbilx opcode

15 years agoacpi-cpufreq: fix 'smp_call_function_many()' confusion
Linus Torvalds [Wed, 15 Apr 2009 15:05:13 +0000 (08:05 -0700)]
acpi-cpufreq: fix 'smp_call_function_many()' confusion

It turns out that 'smp_call_function_many()' doesn't work at all like
'smp_call_function_single()', and my change to Andrew's patch to use it
rather than a loop over all CPU's acpi-cpufreq doesn't work.

My bad.

'smp_call_function_many()' has two "features" (aka "documented bugs"):

 (a) it needs to be called with preemption disabled, because it uses
     smp_processor_id() without guarding the CPU lookup with 'get_cpu()'
     and 'put_cpu()' like the 'single' variant does.

 (b) even if the current CPU is part of the CPU mask, it won't do the
     call on that CPU.

Still, we're better off trying to use 'smp_call_function_many()' than
looping over CPU's, since it at least in theory allows us to use a
broadcast IPI and do it all in parallel.  So let's just work around the
silly semantic bugs in that function.

Reported-and-tested-by: Ali Gholami Rudi <ali@rudi.ir>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agocfq-iosched: add close cooperator code
Jens Axboe [Wed, 15 Apr 2009 10:15:11 +0000 (12:15 +0200)]
cfq-iosched: add close cooperator code

If we have processes that are working in close proximity to each
other on disk, we don't want to idle wait. Instead allow the close
process to issue a request, getting better aggregate bandwidth.
The anticipatory scheduler has similar checks, noop and deadline do
not need it since they don't care about process <-> io mappings.

The code for CFQ is a little more involved though, since we split
request queues into per-process contexts.

This fixes a performance problem with eg dump(8), since it uses
several processes in some silly attempt to speed IO up. Even if
dump(8) isn't really a valid case (it should be fixed by using
CLONE_IO), there are other cases where we see close processes
and where idling ends up hurting performance.

Credit goes to Jeff Moyer <jmoyer@redhat.com> for writing the
initial implementation.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: log responsible 'cfqq' in idle timer arm
Jens Axboe [Wed, 15 Apr 2009 10:14:13 +0000 (12:14 +0200)]
cfq-iosched: log responsible 'cfqq' in idle timer arm

Makes it easier to read the traces.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: tweak kick logic a bit more
Jens Axboe [Wed, 15 Apr 2009 10:12:46 +0000 (12:12 +0200)]
cfq-iosched: tweak kick logic a bit more

We only kick the dispatch for an idling queue, if we think it's a
(somewhat) fully merged request. Also allow a kick if we have other
busy queues in the system, since we don't want to risk waiting for
a potential merge in that case. It's better to get some work done and
proceed.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: no need to save interrupts in cfq_kick_queue()
Jens Axboe [Wed, 15 Apr 2009 10:11:10 +0000 (12:11 +0200)]
cfq-iosched: no need to save interrupts in cfq_kick_queue()

It's called from the workqueue handlers from process context, so
we always have irqs enabled when entered.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobrd: fix cacheflushing
Nick Piggin [Wed, 15 Apr 2009 08:32:07 +0000 (10:32 +0200)]
brd: fix cacheflushing

brd is missing a flush_dcache_page. On 2nd thoughts, perhaps it is the
pagecache's responsibility to flush user virtual aliases (the driver of
course should flush kernel virtual mappings)... but anyway, there
already exists cache flushing for one direction of transfer, so we
should add the other.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobrd: support barriers
Nick Piggin [Wed, 15 Apr 2009 08:27:07 +0000 (10:27 +0200)]
brd: support barriers

brd is always ordered (not that it matters, as it is defined not to
survive when the system goes down). So tell the block layer it is
ordered, which might be of help with testing filesystems.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoswap: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:07:04 +0000 (10:37 +0530)]
swap: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agogfs2: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:06:35 +0000 (10:36 +0530)]
gfs2: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_NOFS implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoext4: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:06:16 +0000 (10:36 +0530)]
ext4: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_NOIO implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agodio: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:05:52 +0000 (10:35 +0530)]
dio: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_KERNEL implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: Remove code handling bio_alloc failure with __GFP_WAIT
Nikanth Karthikesan [Wed, 15 Apr 2009 05:05:31 +0000 (10:35 +0530)]
block: Remove code handling bio_alloc failure with __GFP_WAIT

Remove code handling bio_alloc failure with __GFP_WAIT.
GFP_KERNEL implies __GFP_WAIT.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobio: add documentation to bio_alloc()
Jens Axboe [Wed, 15 Apr 2009 07:00:07 +0000 (09:00 +0200)]
bio: add documentation to bio_alloc()

Explain that with __GFP_WAIT set it will not fail, and that the caller
must never allocate more than 1 bio at the time.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: add helpers for locking pipe inode
Miklos Szeredi [Tue, 14 Apr 2009 17:48:41 +0000 (19:48 +0200)]
splice: add helpers for locking pipe inode

There are lots of sequences like this, especially in splice code:

if (pipe->inode)
mutex_lock(&pipe->inode->i_mutex);
/* do something */
if (pipe->inode)
mutex_unlock(&pipe->inode->i_mutex);

so introduce helpers which do the conditional locking and unlocking.
Also replace the inode_double_lock() call with a pipe_double_lock()
helper to avoid spreading the use of this functionality beyond the
pipe code.

This patch is just a cleanup, and should cause no behavioral changes.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: remove generic_file_splice_write_nolock()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:40 +0000 (19:48 +0200)]
splice: remove generic_file_splice_write_nolock()

Remove the now unused generic_file_splice_write_nolock() function.
It's conceptually broken anyway, because splice may need to wait for
pipe events so holding locks across the whole operation is wrong.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoocfs2: fix i_mutex locking in ocfs2_splice_to_file()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:39 +0000 (19:48 +0200)]
ocfs2: fix i_mutex locking in ocfs2_splice_to_file()

Rearrange locking of i_mutex on destination and call to
ocfs2_rw_lock() so locks are only held while buffers are copied with
the pipe_to_file() actor, and not while waiting for more data on the
pipe.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: fix i_mutex locking in generic_splice_write()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:38 +0000 (19:48 +0200)]
splice: fix i_mutex locking in generic_splice_write()

Rearrange locking of i_mutex on destination so it's only held while
buffers are copied with the pipe_to_file() actor, and not while
waiting for more data on the pipe.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: remove i_mutex locking in splice_from_pipe()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:37 +0000 (19:48 +0200)]
splice: remove i_mutex locking in splice_from_pipe()

splice_from_pipe() is only called from two places:

  - generic_splice_sendpage()
  - splice_write_null()

Neither of these require i_mutex to be taken on the destination inode.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agosplice: split up __splice_from_pipe()
Miklos Szeredi [Tue, 14 Apr 2009 17:48:36 +0000 (19:48 +0200)]
splice: split up __splice_from_pipe()

Split up __splice_from_pipe() into four helper functions:

  splice_from_pipe_begin()
  splice_from_pipe_next()
  splice_from_pipe_feed()
  splice_from_pipe_end()

splice_from_pipe_next() will wait (if necessary) for more buffers to
be added to the pipe.  splice_from_pipe_feed() will feed the buffers
to the supplied actor and return when there's no more data available
(or if all of the requested data has been copied).

This is necessary so that implementations can do locking around the
non-waiting splice_from_pipe_feed().

This patch should not cause any change in behavior.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: fix SG_IO to return a proper error value
FUJITA Tomonori [Mon, 13 Apr 2009 18:03:10 +0000 (20:03 +0200)]
block: fix SG_IO to return a proper error value

blk_rq_unmap_user() returns -EFAULT if a program passes an invalid
address to kernel. SG_IO path needs to pass the returned value to user
space instead of ignoring it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoALSA: add missing definitions(letters) to HD-Audio.txt
Justin Mattock [Tue, 14 Apr 2009 21:31:21 +0000 (14:31 -0700)]
ALSA: add missing definitions(letters) to HD-Audio.txt

impact: Add missing definitions(letters).

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years agoMerge branch 'topic/memdup_user' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:27 +0000 (11:24 +0200)]
Merge branch 'topic/memdup_user' into for-linus

* topic/memdup_user:
  ALSA: sound/pci: use memdup_user()
  ALSA: sound/usb: use memdup_user()
  ALSA: sound/isa: use memdup_user()
  ALSA: sound/core: use memdup_user()

15 years agoMerge branch 'topic/usb-caiaq' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:22 +0000 (11:24 +0200)]
Merge branch 'topic/usb-caiaq' into for-linus

* topic/usb-caiaq:
  ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes
  ALSA: snd-usb-caiaq: clean up header includes

15 years agoMerge branch 'topic/asoc' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:14 +0000 (11:24 +0200)]
Merge branch 'topic/asoc' into for-linus

* topic/asoc:
  ASoC: Disable S3C64xx support in Kconfig
  ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h

15 years agoMerge branch 'topic/hda' into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:24:09 +0000 (11:24 +0200)]
Merge branch 'topic/hda' into for-linus

* topic/hda:
  ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
  ALSA: hda - Avoid call of snd_jack_report at release
  ALSA: add private_data to struct snd_jack

15 years agoMerge branch 'topic/jack-free-fix' into topic/hda
Takashi Iwai [Wed, 15 Apr 2009 09:23:44 +0000 (11:23 +0200)]
Merge branch 'topic/jack-free-fix' into topic/hda

* topic/jack-free-fix:
  ALSA: hda - Avoid call of snd_jack_report at release
  ALSA: add private_data to struct snd_jack

15 years agoMerge branch 'master' of git://git.alsa-project.org/alsa-kernel into for-linus
Takashi Iwai [Wed, 15 Apr 2009 09:21:13 +0000 (11:21 +0200)]
Merge branch 'master' of git://git.alsa-project.org/alsa-kernel into for-linus

* 'master' of git://git.alsa-project.org/alsa-kernel:
  [ALSA] intel8x0: add one retry to the ac97_clock measurement routine
  [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine
  [ALSA] intel8x0: do not use zero value from PICB register
  [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable
  [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies
  [ALSA] hda_intel: fix unexpected ring buffer positions

15 years agoGFS2: Use DEFINE_SPINLOCK
Xu Gang [Tue, 14 Apr 2009 06:54:14 +0000 (14:54 +0800)]
GFS2: Use DEFINE_SPINLOCK

SPIN_LOCK_UNLOCKED is deprecated, use DEFINE_SPINLOCK instead.
(as suggested in Documentation/spinlocks.txt)

Signed-off-by: Xu Gang <xug@cn.fujitsu.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: cleanup file_operations mess
Christoph Hellwig [Tue, 7 Apr 2009 17:42:17 +0000 (19:42 +0200)]
GFS2: cleanup file_operations mess

Remove the weird pointer to file_operations mess and replace it with
straight-forward defining of the lockinginstance names to the _nolock
variants.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move umount flush rwsem
Steven Whitehouse [Tue, 7 Apr 2009 13:01:34 +0000 (14:01 +0100)]
GFS2: Move umount flush rwsem

The rwsem, used only on umount, is in the wrong place in glock.c.
This patch moves it up a bit so that it does not get called under
a spinlock.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix symlink creation race
Steven Whitehouse [Tue, 31 Mar 2009 15:06:27 +0000 (16:06 +0100)]
GFS2: Fix symlink creation race

In certain cases symlinks can appear to have zero size if a lookup
on the inode occurs within a certain (very short) time after the
symlink has been created. The symlink is correctly created on disk
but appears to have zero size when stat()ed. This patch closes the
race and prevents incorrect sizes appearing.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Make quotad's waiting interruptible
Steven Whitehouse [Tue, 31 Mar 2009 14:49:08 +0000 (15:49 +0100)]
GFS2: Make quotad's waiting interruptible

So we don't count its D state in the loadavg.

Reported-by: Nathan Straz <nstraz@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883
Takashi Iwai [Tue, 14 Apr 2009 12:51:04 +0000 (14:51 +0200)]
ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883

Added the models for quirk bitmask 1734:110x and 1734:113x of
Fujitsu laptops.

This will fix the model detection for Amilo Xa3540.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
15 years ago[ALSA] intel8x0: add one retry to the ac97_clock measurement routine
Jaroslav Kysela [Wed, 15 Apr 2009 08:16:24 +0000 (10:16 +0200)]
[ALSA] intel8x0: add one retry to the ac97_clock measurement routine

It seems that on some hardware platforms, the first measurement is wrong.
This patch adds second measurement to this case.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
15 years agocfq-iosched: don't delay queue kick for a merged request
Jens Axboe [Tue, 14 Apr 2009 12:18:16 +0000 (14:18 +0200)]
cfq-iosched: don't delay queue kick for a merged request

"Zhang, Yanmin" <yanmin_zhang@linux.intel.com> reports that commit
b029195dda0129b427c6e579a3bb3ae752da3a93 introduced a regression
of about 50% with sequential threaded read workloads. The test
case is:

tiotest -k0 -k1 -k3 -f 80 -t 32

which starts 32 threads each reading a 80MB file. Twiddle the kick
queue logic so that we do start IO immediately, if it appears to be
a fully merged request. We can't really detect that, so just check
if the request is bigger than a page or not. The assumption is that
since single bio issues will first queue a single request with just
one page attached and then later do merges on that, if we already
have more than a page worth of data in the request, then the request
is most likely good to go.

Verified that this doesn't cause a regression with the test case that
commit b029195dda0129b427c6e579a3bb3ae752da3a93 was fixing. It does not,
we still see maximum sized requests for the queue-then-merge cases.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agobuffer: switch do_emergency_thaw() away from pdflush_operation()
Jens Axboe [Wed, 8 Apr 2009 11:44:08 +0000 (13:44 +0200)]
buffer: switch do_emergency_thaw() away from pdflush_operation()

This is (again) a preparatory patch similar to commit
a2a9537ac0b37a5da6fbe7e1e9cb06c524d2a9c4. It open codes a simple
async way of executing do_thaw_all() out of context, so we can get
rid of pdflush.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: update biodoc.txt on plugging
Jens Axboe [Wed, 8 Apr 2009 09:38:50 +0000 (11:38 +0200)]
block: update biodoc.txt on plugging

We do per-device plugging, get rid of any references to tq_disk as that
has been dead since 2.6.5 or so.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoas-iosched: get rid of private REQ_SYNC/REQ_ASYNC defines
Jens Axboe [Wed, 8 Apr 2009 09:02:08 +0000 (11:02 +0200)]
as-iosched: get rid of private REQ_SYNC/REQ_ASYNC defines

We can just use the block layer BLK_RW_SYNC/ASYNC defines now.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: get rid of private SYNC/ASYNC defines
Jens Axboe [Wed, 8 Apr 2009 08:58:57 +0000 (10:58 +0200)]
cfq-iosched: get rid of private SYNC/ASYNC defines

We can just use the block layer BLK_RW_SYNC/ASYNC defines now.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agocfq-iosched: use rw_is_sync() to see if rw flags are sync or not
Jens Axboe [Wed, 8 Apr 2009 08:56:08 +0000 (10:56 +0200)]
cfq-iosched: use rw_is_sync() to see if rw flags are sync or not

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoDocument and move the various READ/WRITE types
Jens Axboe [Tue, 14 Apr 2009 06:19:27 +0000 (08:19 +0200)]
Document and move the various READ/WRITE types

It's a somewhat twisty maze of hints and behavioural modifiers, try
and clear it up a bit with some documentation.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: fix bad spelling of quiesce
Jens Axboe [Wed, 8 Apr 2009 12:22:01 +0000 (14:22 +0200)]
block: fix bad spelling of quiesce

Credit goes to Andrew Morton for spotting this one.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agoblock: move bio list helpers into bio.h
Christoph Hellwig [Tue, 7 Apr 2009 17:55:13 +0000 (19:55 +0200)]
block: move bio list helpers into bio.h

It's used by DM and MD and generally useful, so move the bio list
helpers into bio.h.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
15 years agopowerpc: pseries/dtl.c should include asm/firmware.h
Sachin Sant [Tue, 14 Apr 2009 14:35:55 +0000 (14:35 +0000)]
powerpc: pseries/dtl.c should include asm/firmware.h

A randconfig build on powerpc failed with:

dtl.c: In function 'dtl_init':
dtl.c:238: error: implicit declaration of function 'firmware_has_feature'
dtl.c:238: error: 'FW_FEATURE_SPLPAR' undeclared (first use in this function)

- We need firmware.h for these definitions.

Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc: Fix data-corrupting bug in __futex_atomic_op
Paul Mackerras [Mon, 13 Apr 2009 14:09:09 +0000 (14:09 +0000)]
powerpc: Fix data-corrupting bug in __futex_atomic_op

Richard Henderson pointed out that the powerpc __futex_atomic_op has a
bug: it will write the wrong value if the stwcx. fails and it has to
retry the lwarx/stwcx. loop, since 'oparg' will have been overwritten
by the result from the first time around the loop.  This happens
because it uses the same register for 'oparg' (an input) as it uses
for the result.

This fixes it by using separate registers for 'oparg' and 'ret'.

Cc: stable@kernel.org
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()
Mike Mason [Fri, 10 Apr 2009 08:57:03 +0000 (08:57 +0000)]
powerpc/pseries: Set error_state to pci_channel_io_normal in eeh_report_reset()

While adding native EEH support to Emulex and Qlogic drivers, it was
discovered that dev->error_state was set to pci_io_channel_normal too
late in the recovery process. These drivers rely on error_state to
determine if they can access the device in their slot_reset callback,
thus error_state needs to be set to pci_io_channel_normal in
eeh_report_reset(). Below is a detailed explanation (courtesy of Richard
Lary) as to why this is necessary.

Background:
PCI MMIO or DMA accesses to a frozen slot generate additional EEH
errors. If the number of additional EEH errors exceeds EEH_MAX_FAILS the
adapter will be shutdown. To avoid triggering excessive EEH errors and
an undesirable adapter shutdown, some drivers use the
pci_channel_offline(dev) wrapper function to return a Boolean value
based on the value of pci_dev->error_state to determine if PCI MMIO or
DMA accesses are safe. If the wrapper returns TRUE, drivers must not
make PCI MMIO or DMA access to their hardware.

The pci_dev structure member error_state reflects one of three values,
1) pci_channel_io_normal, 2) pci_channel_io_frozen, 3)
pci_channel_io_perm_failure.  Function pci_channel_offline(dev) returns
TRUE if error_state is pci_channel_io_frozen or pci_channel_io_perm_failure.

The EEH driver sets pci_dev->error_state to pci_channel_io_frozen at the
point where the PCI slot is frozen. Currently, the EEH driver restores
dev->error_state to pci_channel_io_normal in eeh_report_resume() before
calling the driver's resume callback. However, when the EEH driver calls
the driver's slot_reset callback() from eeh_report_reset(), it
incorrectly indicates the error state is still pci_channel_io_frozen.

Waiting until eeh_report_resume() to restore dev->error_state to
pci_channel_io_normal is too late for Emulex and QLogic FC drivers and
any other drivers which are designed to use common code paths in these
two cases: i) those called after the driver's slot_reset callback() and
ii) those called after the PCI slot is frozen but before the driver's
slot_reset callback is called. Case i) all driver paths executed to
reinitialize the hardware after a reset and case ii) all code paths
executed by driver kernel threads that run asynchronous to the main
driver thread, such as interrupt handlers and worker threads to process
driver work queues.

Emulex and QLogic FC drivers are designed with common code paths which
require that pci_channel_offline(dev) reflect the true state of the
hardware. The state transitions that the hardware takes from Normal
Operations to Slot Frozen to Reset to Normal Operations are documented
in the Power Architecture™ Platform Requirements+ (PAPR+) in Table 75.
PE State Control.

PAPR defines the following 3 states:

0 -- Not reset, Not EEH stopped, MMIO load/store allowed, DMA allowed
     (Normal Operations)
1 -- Reset, Not EEH stopped, MMIO load/store disabled, DMA disabled
2 -- Not reset, EEH stopped, MMIO load/store disabled, DMA disabled
     (Slot Frozen)

An EEH error places the slot in state 2 (Frozen) and the adapter driver
is notified that an EEH error was detected. If the adapter driver
returns PCI_ERS_RESULT_NEED_RESET, the EEH driver calls
eeh_reset_device() to place the slot into state 1 (Reset) and
eeh_reset_device completes by placing the slot into State 0 (Normal
Operations). Upon return from eeh_reset_device(), the EEH driver calls
eeh_report_reset, which then calls the adapter's slot_reset callback. At
the time the adapter's slot_reset callback is called, the true state of
the hardware is Normal Operations and should be accurately reflected by
setting dev->error_state to pci_channel_io_normal.

The current implementation of EEH driver does not do so and requires
this change to correct this deficiency.

Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Acked-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agopowerpc: Allow 256kB pages with SHMEM
Hugh Dickins [Mon, 6 Apr 2009 11:01:15 +0000 (11:01 +0000)]
powerpc: Allow 256kB pages with SHMEM

Now that shmem's divisions by zero and SHMEM_MAX_BYTES are fixed,
let powerpc 256kB pages coexist with CONFIG_SHMEM again.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
15 years agoLinux 2.6.30-rc2
Linus Torvalds [Tue, 14 Apr 2009 20:51:48 +0000 (13:51 -0700)]
Linux 2.6.30-rc2

15 years ago[ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine
Jaroslav Kysela [Tue, 14 Apr 2009 20:40:04 +0000 (22:40 +0200)]
[ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine

Also add a little code cleanup.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
15 years agoMerge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...
Linus Torvalds [Tue, 14 Apr 2009 20:16:40 +0000 (13:16 -0700)]
Merge branch 'drm-intel-next' of git://git./linux/kernel/git/anholt/drm-intel

* 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
  drm/i915: fix scheduling while holding the new active list spinlock
  drm/i915: Allow tiling of objects with bit 17 swizzling by the CPU.
  drm/i915: Correctly set the write flag for get_user_pages in pread.
  drm/i915: Fix use of uninitialized var in 40a5f0de
  drm/i915: indicate framebuffer restore key in SysRq help message
  drm/i915: sync hdmi detection by hdmi identifier with 2D
  drm/i915: Fix a mismerge of the IGD patch (new .find_pll hooks missed)
  drm/i915: Implement batch and ring buffer dumping

15 years agox86 microcode: revert some work_on_cpu
Hugh Dickins [Tue, 14 Apr 2009 18:25:42 +0000 (19:25 +0100)]
x86 microcode: revert some work_on_cpu

Revert part of af5c820a3169e81af869c113e18ec7588836cd50 ("x86: cpumask:
use work_on_cpu in arch/x86/kernel/microcode_core.c")

That change is causing only one Intel CPU's microcode to be updated e.g.
microcode: CPU3 updated from revision 0x9 to 0x17, date = 2005-04-22
where before it announced that also for CPU0 and CPU1 and CPU2.

We cannot use work_on_cpu() in the CONFIG_MICROCODE_OLD_INTERFACE code,
because Intel's request_microcode_user() involves a copy_from_user() from
/sbin/microcode_ctl, which therefore needs to be on that CPU at the time.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodrm/i915: fix scheduling while holding the new active list spinlock
Shaohua Li [Wed, 8 Apr 2009 02:58:23 +0000 (10:58 +0800)]
drm/i915: fix scheduling while holding the new active list spinlock

regression caused by commit 5e118f4139feafe97e913df67b1f7c1e5083e535:
i915_gem_object_move_to_inactive() should be called in task context,
as it calls fput();

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
[anholt: Add more detail to the comment about the lock break that's added]
Signed-off-by: Eric Anholt <eric@anholt.net>
15 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 14 Apr 2009 17:12:31 +0000 (10:12 -0700)]
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:
  lockdep: warn about lockdep disabling after kernel taint, fix