Clemens Ladisch [Tue, 6 Oct 2009 06:21:04 +0000 (08:21 +0200)]
sound: via82xx: move DXS volume controls to PCM interface
The "VIA DXS" controls are actually volume controls that apply to the
four PCM substreams, so we better indicate this connection by moving the
controls to the PCM interface.
Commit
b452e08e73c0e3dbb0be82130217be4b7084299e in 2.6.30 broke the
restoring of these volumes by "alsactl restore" that most distributions
use; the renaming in this patch cures that regression by preventing
alsactl from applying the old, wrong volume levels to the new controls.
http://bugzilla.kernel.org/show_bug.cgi?id=14151
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532613
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 2 Oct 2009 12:06:08 +0000 (14:06 +0200)]
ALSA: usb - Use strlcat() correctly
Don't pass the advanced position to strlcat() but just gives the buffer
head position so that the max size limit can be checked correctly.
Introduced a new helper function to standaralize strlcat() calls.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 2 Oct 2009 09:04:54 +0000 (11:04 +0200)]
ALSA: Fix invalid __exit in sound/mips/*.c
The remove callback has to be marked as __devexit, as the dynamic unbind
is possible.
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Sven Eckelmann [Thu, 1 Oct 2009 18:06:39 +0000 (20:06 +0200)]
ALSA: ctxfi: Swapped SURROUND-SIDE mute
On Soundblaster X-FI Titenium with emu20k2 the SIDE and SURROUND mute
functions are swapped.
It was checked with 'speaker-test -c 8 -s 3' and (un)mute surround or
'speaker-test -c 8 -s 7' and (un)mute side. The volume seems not
to be affected and works as expected.
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Jean Delvare [Thu, 1 Oct 2009 16:08:18 +0000 (18:08 +0200)]
sound: Make keywest_driver static
I can't see any reason for struct i2c_driver keywest_driver to not be
static.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Daniel T Chen [Thu, 1 Oct 2009 22:56:30 +0000 (18:56 -0400)]
ALSA: intel8x0 - Mute External Amplifier by default for Sony VAIO VGN-B1VP
BugLink: https://bugs.launchpad.net/bugs/410933
This Sony VAIO model also needs External Amplifier unmuted for audible
playback, so make sure we set the inv_eapd quirk.
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Thu, 1 Oct 2009 05:46:33 +0000 (07:46 +0200)]
ALSA: Don't assume i2c device probing always succeeds
The client->driver pointer can be NULL when i2c-device probing fails
in i2c_new_device(). This patch adds the NULL checks for client->driver
and return the error instead of blind assumption of driver availability.
Reported-by: Tim Shepard <shep@alum.mit.edu>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Daniel T Chen [Thu, 1 Oct 2009 04:28:16 +0000 (00:28 -0400)]
ALSA: intel8x0 - Mute External Amplifier by default for Sony VAIO VGN-T350P
BugLink: https://bugs.launchpad.net/bugs/410933
This Sony VAIO model needs External Amplifier unmuted for audible
playback, so make sure we set the inv_eapd quirk.
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Giuliano Pochini [Wed, 30 Sep 2009 06:26:45 +0000 (08:26 +0200)]
ALSA: echoaudio - Re-enable the line-out control for the Mia card
Mia has an undocumented line-out control, and it has to be exposed.
Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tim Blechmann [Mon, 21 Sep 2009 13:00:57 +0000 (15:00 +0200)]
ALSA: lx6464es - remove unused struct member
we cannot set the sampling rate of the device, but can only read it
from the board, so we don't need the member for it.
Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tim Blechmann [Mon, 21 Sep 2009 13:00:22 +0000 (15:00 +0200)]
ALSA: lx6464es - cleanup of rmh message bus function
the rmh bus is not used asynchronously, so it is safe to remove the
specific code pieces.
Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Thu, 17 Sep 2009 16:46:26 +0000 (18:46 +0200)]
ALSA: pcm - Simplify snd_pcm_drain() implementation
Simplify snd_pcm_drain() implementation and avoid unneeded array-
allocation for waitqueues. Instead, one waitqueue is used for the
first draining stream, and wait until all streams finished.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Thu, 17 Sep 2009 19:08:56 +0000 (21:08 +0200)]
Merge branch 'fix/hda' into for-linus
* fix/hda:
ALSA: hda - Fix MSI GX620 mixer
ALSA: hda - Fix Dell S14 pin setup
ALSA: hda - Fix IDT92HD83* codec setup
ALSA: hda - Add support for HP dv6
ALSA: hda - Fix HP/line-out initialization with IDT/STAC codecs
ALSA: hda - Set default GPIO for IDT92HD71bxx
ALSA: hda - Set default GPIO for STAC/IDT codecs
ALSA: hda - Add missing model=auto entry for ALC269
Takashi Iwai [Thu, 17 Sep 2009 19:08:53 +0000 (21:08 +0200)]
Merge branch 'fix/asoc' into for-linus
* fix/asoc:
ASoC: remove unused #include <linux/version.h>
ASoC: S3C lrsync function made to work with IRQs disabled.
ASoC: Fix display of stream name in DAPM debugfs
ASoC: Clean up error handling in MPC5200 DMA setup
Takashi Iwai [Thu, 17 Sep 2009 16:23:00 +0000 (18:23 +0200)]
ALSA: hda - Fix MSI GX620 mixer
The headphone and speaker mixer elements aren't properly set for
MSI GX620 with targa-8ch-dig quirk.
Also fixed the speaker volume control for other ALC883-targa quirks,
too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Huang Weiyi [Wed, 16 Sep 2009 13:05:45 +0000 (21:05 +0800)]
ASoC: remove unused #include <linux/version.h>
Remove unused #include <linux/version.h>('s) in
sound/soc/codecs/ad1836.c
sound/soc/codecs/ad1938.c
sound/soc/codecs/wm8974.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Jassi [Tue, 15 Sep 2009 10:02:37 +0000 (19:02 +0900)]
ASoC: S3C lrsync function made to work with IRQs disabled.
s3c2412_snd_lrsync() maybe reached with IRQs disabled and if LRCLK
is dead due to improper initialization of CPU or CODEC, the system
gets stuck in the loop because jiffies may never get updated.
Implemented counter based wait mechanism for atleast the same
timeout period.
Signed-off-by: Jassi <jassi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Takashi Iwai [Tue, 15 Sep 2009 10:37:42 +0000 (12:37 +0200)]
ALSA: hda - Fix Dell S14 pin setup
The pin setup for Dell S14 quirk is rather wrong for the latest driver.
Fixed pin 0x0a, 0x0b, 0x0d and 0x0f.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 15 Sep 2009 10:35:56 +0000 (12:35 +0200)]
ALSA: hda - Fix IDT92HD83* codec setup
Remove unnecessary (and buggy) init sequences left for IDT92HD83*
codecs in the previous fixes. The DACs are now dynamically connected,
thus shouldn't be set statically in init verbs. Also, the mono_nid
is detected dynamically, thus shouldn't be set staticaly, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Mark Brown [Mon, 14 Sep 2009 15:49:00 +0000 (16:49 +0100)]
ASoC: Fix display of stream name in DAPM debugfs
Also display streams all the time while we're here.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Takashi Iwai [Mon, 14 Sep 2009 13:42:18 +0000 (15:42 +0200)]
ALSA: hda - Add support for HP dv6
Add the quirk entry for HP dv6. Also add a workaround for the headphone
detection by setting hp_detect=1 beforehand. Without this, the driver
won't do auto-muting because BIOS doesn't give any HP pin but only a
line-out pin.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 14 Sep 2009 13:36:14 +0000 (15:36 +0200)]
ALSA: hda - Fix HP/line-out initialization with IDT/STAC codecs
It's possible that hp_detect is set even though no headphone pin is
detected. The driver issues, however, an unsol event only to hp_pins[0],
which can be invalid.
This patch adds the check of the valid pin to send an unsol event
at initialization and resume callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 14 Sep 2009 13:33:01 +0000 (15:33 +0200)]
ALSA: hda - Set default GPIO for IDT92HD71bxx
A smiliar fix for IDT 92HD71Bxx codecs like the previous commit for
other IDT/STAC codecs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 14 Sep 2009 13:03:12 +0000 (15:03 +0200)]
ALSA: hda - Set default GPIO for STAC/IDT codecs
IDT92HD73xx and STAC927x codecs use GPIO0 bit as EAPD on many machines.
However, currently we don't set it unless the model is specified just
for safety reason. But, most machines do need this bit, so this safety
handling is rather annoying.
This patch enables GPIO0 setup as default for them. Many HP / Dell
laptops should work even without model override with this change.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Julia Lawall [Sat, 12 Sep 2009 12:25:35 +0000 (14:25 +0200)]
ASoC: Clean up error handling in MPC5200 DMA setup
Error handling code following a kzalloc should free the allocated data.
Error handling code following an ioremap should iounmap the allocated data.
The semantic match that finds the first problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Takashi Iwai [Fri, 11 Sep 2009 05:50:47 +0000 (07:50 +0200)]
ALSA: hda - Add missing model=auto entry for ALC269
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Thu, 10 Sep 2009 13:33:09 +0000 (15:33 +0200)]
Merge branch 'topic/ymfpci' into for-linus
* topic/ymfpci:
sound: ymfpci: increase timer resolution to 96 kHz
Takashi Iwai [Thu, 10 Sep 2009 13:33:07 +0000 (15:33 +0200)]
Merge branch 'topic/usb-audio' into for-linus
* topic/usb-audio:
ALSA: usb-audio - Fix types taken in min()
sound: usb-audio: do not make URBs longer than sync packet interval
sound: usb-audio: add MIDI drain callback
sound: usb-audio: use multiple output URBs
sound: usb-audio: use multiple input URBs
sound: usb-audio: Xonar U1 digital output support
Takashi Iwai [Thu, 10 Sep 2009 13:33:06 +0000 (15:33 +0200)]
Merge branch 'topic/tlv-minmax' into for-linus
* topic/tlv-minmax:
ALSA: usb-audio - Correct bogus volume dB information
ALSA: usb-audio - Use the new TLV_DB_MINMAX type
ALSA: Add new TLV types for dBwith min/max
Takashi Iwai [Thu, 10 Sep 2009 13:33:04 +0000 (15:33 +0200)]
Merge branch 'topic/soundcore-preclaim' into for-linus
* topic/soundcore-preclaim:
sound: make OSS device number claiming optional and schedule its removal
sound: request char-major-* module aliases for missing OSS devices
chrdev: implement __[un]register_chrdev()
Takashi Iwai [Thu, 10 Sep 2009 13:33:03 +0000 (15:33 +0200)]
Merge branch 'topic/snd-printk' into for-linus
* topic/snd-printk:
ALSA: Fixed a typo of printk()
ALSA: Add debug module option
ALSA: core - strip too long file names in snd_print*()
Takashi Iwai [Thu, 10 Sep 2009 13:33:02 +0000 (15:33 +0200)]
Merge branch 'topic/pcm-estrpipe-in-pm' into for-linus
* topic/pcm-estrpipe-in-pm:
ALSA: pcm - Tell user that stream to be rewound is suspended
Takashi Iwai [Thu, 10 Sep 2009 13:33:00 +0000 (15:33 +0200)]
Merge branch 'topic/pcm-drain-nonblock' into for-linus
* topic/pcm-drain-nonblock:
ALSA: pcm - Increase protocol version
ALSA: pcm - Fix drain behavior in non-blocking mode
Takashi Iwai [Thu, 10 Sep 2009 13:32:59 +0000 (15:32 +0200)]
Merge branch 'topic/oxygen' into for-linus
* topic/oxygen:
sound: oxygen: work around MCE when changing volume
Takashi Iwai [Thu, 10 Sep 2009 13:32:58 +0000 (15:32 +0200)]
Merge branch 'topic/oss' into for-linus
* topic/oss:
ALSA: allocation may fail in snd_pcm_oss_change_params()
sound: vwsnd: Fix setting of cfgval and ctlval in li_setup_dma()
sound: fix OSS MIDI output data loss
Takashi Iwai [Thu, 10 Sep 2009 13:32:57 +0000 (15:32 +0200)]
Merge branch 'topic/misc' into for-linus
* topic/misc:
ALSA: Remove unneeded ifdef from sound/core.h
ALSA: Remove struct snd_monitor_file from public sound/core.h
ALSA: Release v1.0.21
Takashi Iwai [Thu, 10 Sep 2009 13:32:56 +0000 (15:32 +0200)]
Merge branch 'topic/midi' into for-linus
* topic/midi:
sound: rawmidi: disable active-sensing-on-close by default
sound: seq_oss_midi: remove magic numbers
sound: seq_midi: do not send MIDI reset when closing
seq-midi: always log message on output overrun
Takashi Iwai [Thu, 10 Sep 2009 13:32:55 +0000 (15:32 +0200)]
Merge branch 'topic/ice1724-pm' into for-linus
* topic/ice1724-pm:
ALSA: ice1724 - Fix section mismatch
ALSA: ice1724 - Patch for suspend/resume for Audiotrak Prodigy HD2
Takashi Iwai [Thu, 10 Sep 2009 13:32:54 +0000 (15:32 +0200)]
Merge branch 'topic/hdsp' into for-linus
* topic/hdsp:
ALSA: hdsp - allow proc reporting with disconnected io box
Takashi Iwai [Thu, 10 Sep 2009 13:32:52 +0000 (15:32 +0200)]
Merge branch 'topic/hda' into for-linus
* topic/hda: (92 commits)
ALSA: hda - Use auto model for HP laptops with ALC268 codec
ALSA: hda/realtek: Added support for CLEVO M540R subsystem, 6 channel + digital
ALSA: hda - Add support of Alienware M17x laptop
ALSA: hda - Remove dead codes from patch_sigmatel.c
ALSA: hda - Fix input source selection of IDT92HD73xx
ALSA: hda - Fix obsolete CONFIG_SND_DEBUG_DETECT
ALSA: hda - Unmute docking line-out as default with
AD1984A codec
ALSA: hda - Add another entry for Nvidia HDMI device
ALSA: hda - Add missing GPIO initialization for
AD1984A laptop model
ALSA: hda - Add support of docking auto-mute/mic for
AD1984A laptop model
ALSA: hda - Fix ALC268/ALC269 headphone pin routing
ALSA: hda - Create "Digital Mic Capture Volume" correctly for IDT codecs
ALSA: hda - Add more quirk for HP laptops with
AD1984A
ALSA: hda - Add / fix model entries for HD-audio driver
ALSA: hda - Add full audio support on Acer Aspire 7730G notebook
ALSA: hda - Improve auto-cfg mixer name for ALC662
ALSA: hda - Improve auto-cfg mixer name for ALC861-VD
ALSA: hda - Improve auto-cfg mixer name for ALC262
ALSA: hda - Improve auto-cfg mixer name for ALC260
ALSA: hda - Improve auto-cfg mixer name for ALC880
...
Takashi Iwai [Thu, 10 Sep 2009 13:32:51 +0000 (15:32 +0200)]
Merge branch 'topic/dummy' into for-linus
* topic/dummy:
ALSA: dummy - Increase MAX_PCM_SUBSTREAMS to 128
ALSA: dummy - Add debug proc file
ALSA: Add const prefix to proc helper functions
ALSA: Re-export snd_pcm_format_name() function
ALSA: dummy - Fake buffer allocations
ALSA: dummy - Fix the timer calculation in systimer mode
ALSA: dummy - Add more description
ALSA: dummy - Better jiffies handling
ALSA: dummy - Support high-res timer mode
Takashi Iwai [Thu, 10 Sep 2009 13:32:50 +0000 (15:32 +0200)]
Merge branch 'topic/dma-sgbuf' into for-linus
* topic/dma-sgbuf:
ALSA: Fix SG-buffer DMA with non-coherent architectures
Takashi Iwai [Thu, 10 Sep 2009 13:32:48 +0000 (15:32 +0200)]
Merge branch 'topic/ctxfi' into for-linus
* topic/ctxfi:
ALSA: ctxfi - Simple code clean up
ALSA: ctxfi - Native timer support for emu20k2
Takashi Iwai [Thu, 10 Sep 2009 13:32:47 +0000 (15:32 +0200)]
Merge branch 'topic/ctl-add-remove-fixes' into for-linus
* topic/ctl-add-remove-fixes:
sound: snd_ctl_remove_user_ctl: prevent removal of kernel controls
sound: snd_ctl_remove_unlocked_id: simplify user control counting
sound: snd_ctl_remove_unlocked_id: simplify error paths
sound: snd_ctl_elem_add: fix value count check
Takashi Iwai [Thu, 10 Sep 2009 13:32:46 +0000 (15:32 +0200)]
Merge branch 'topic/cs46xx' into for-linus
* topic/cs46xx:
ALSA: cs46xx - Fix minimum period size
Takashi Iwai [Thu, 10 Sep 2009 13:32:45 +0000 (15:32 +0200)]
Merge branch 'topic/cmi8330' into for-linus
* topic/cmi8330:
ALSA: cmi8330: Allow MPU-401-less operation
ALSA: cmi8330: find OPL3 port automatically
cmi8330: Add basic CMI8329 support
ALSA: cmi8330: revert comments about AD1848 back
Takashi Iwai [Thu, 10 Sep 2009 13:32:43 +0000 (15:32 +0200)]
Merge branch 'topic/cleanup' into for-linus
* topic/cleanup:
ALSA: info - Use krealloc()
Takashi Iwai [Thu, 10 Sep 2009 13:32:41 +0000 (15:32 +0200)]
Merge branch 'topic/azt3328' into for-linus
* topic/azt3328:
ALSA: azt3328: fix previous breakage, improve suspend, cleanups
ALSA: azt3328: large codec cleanup, add I2S port etc.
ALSA: azt3328: fix Kconfig entry
Takashi Iwai [Thu, 10 Sep 2009 13:32:40 +0000 (15:32 +0200)]
Merge branch 'topic/asoc' into for-linus
* topic/asoc: (226 commits)
ASoC: au1x: PSC-AC97 bugfixes
ASoC: Fix WM835x Out4 capture enumeration
ASoC: Remove unuused hw_read_t
ASoC: fix pxa2xx-ac97.c breakage
ASoC: Fully specify DC servo bits to update in wm_hubs
ASoC: Debugged improper setting of PLL fields in WM8580 driver
ASoC: new board driver to connect bfin-5xx with ad1836 codec
ASoC: OMAP: Add functionality to set CLKR and FSR sources in McBSP DAI
ASoC: davinci: i2c device creation moved into board files
ASoC: Don't reconfigure WM8350 FLL if not needed
ASoC: Fix s3c-i2s-v2 build
ASoC: Make platform data optional for TLV320AIC3x
ASoC: Add S3C24xx dependencies for Simtec machines
ASoC: SDP3430: Fix TWL GPIO6 pin mux request
ASoC: S3C platform: Fix s3c2410_dma_started() called at improper time
ARM: OMAP: McBSP: Merge two functions into omap_mcbsp_start/_stop
ASoC: OMAP: Fix setup of XCCR and RCCR registers in McBSP DAI
OMAP: McBSP: Use textual values in DMA operating mode sysfs files
ARM: OMAP: DMA: Add support for DMA channel self linking on OMAP1510
ASoC: Select core DMA when building for S3C64xx
...
Takashi Iwai [Thu, 10 Sep 2009 13:32:38 +0000 (15:32 +0200)]
Merge branch 'topic/ali5451-cleanup' into for-linus
* topic/ali5451-cleanup:
ALSA: ali5451: remove dead code
Linus Torvalds [Wed, 9 Sep 2009 22:13:59 +0000 (15:13 -0700)]
Linux 2.6.31
Ed Cashin [Wed, 9 Sep 2009 12:10:18 +0000 (14:10 +0200)]
aoe: allocate unused request_queue for sysfs
Andy Whitcroft reported an oops in aoe triggered by use of an
incorrectly initialised request_queue object:
[ 2645.959090] kobject '<NULL>' (
ffff880059ca22c0): tried to add
an uninitialized object, something is seriously wrong.
[ 2645.959104] Pid: 6, comm: events/0 Not tainted 2.6.31-5-generic #24-Ubuntu
[ 2645.959107] Call Trace:
[ 2645.959139] [<
ffffffff8126ca2f>] kobject_add+0x5f/0x70
[ 2645.959151] [<
ffffffff8125b4ab>] blk_register_queue+0x8b/0xf0
[ 2645.959155] [<
ffffffff8126043f>] add_disk+0x8f/0x160
[ 2645.959161] [<
ffffffffa01673c4>] aoeblk_gdalloc+0x164/0x1c0 [aoe]
The request queue of an aoe device is not used but can be allocated in
code that does not sleep.
Bruno bisected this regression down to
cd43e26f071524647e660706b784ebcbefbd2e44
block: Expose stacked device queues in sysfs
"This seems to generate /sys/block/$device/queue and its contents for
everyone who is using queues, not just for those queues that have a
non-NULL queue->request_fn."
Addresses http://bugs.launchpad.net/bugs/410198
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13942
Note that embedding a queue inside another object has always been
an illegal construct, since the queues are reference counted and
must persist until the last reference is dropped. So aoe was
always buggy in this respect (Jens).
Signed-off-by: Ed Cashin <ecashin@coraid.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Bruno Premont <bonbons@linux-vserver.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Linus Torvalds [Wed, 9 Sep 2009 00:09:24 +0000 (17:09 -0700)]
i915: disable interrupts before tearing down GEM state
Reinette Chatre reports a frozen system (with blinking keyboard LEDs)
when switching from graphics mode to the text console, or when
suspending (which does the same thing). With netconsole, the oops
turned out to be
BUG: unable to handle kernel NULL pointer dereference at
0000000000000084
IP: [<
ffffffffa03ecaab>] i915_driver_irq_handler+0x26b/0xd20 [i915]
and it's due to the i915_gem.c code doing drm_irq_uninstall() after
having done i915_gem_idle(). And the i915_gem_idle() path will do
i915_gem_idle() ->
i915_gem_cleanup_ringbuffer() ->
i915_gem_cleanup_hws() ->
dev_priv->hw_status_page = NULL;
but if an i915 interrupt comes in after this stage, it may want to
access that hw_status_page, and gets the above NULL pointer dereference.
And since the NULL pointer dereference happens from within an interrupt,
and with the screen still in graphics mode, the common end result is
simply a silently hung machine.
Fix it by simply uninstalling the irq handler before idling rather than
after. Fixes
http://bugzilla.kernel.org/show_bug.cgi?id=13819
Reported-and-tested-by: Reinette Chatre <reinette.chatre@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Manuel Lauss [Tue, 8 Sep 2009 17:45:17 +0000 (19:45 +0200)]
ASoC: au1x: PSC-AC97 bugfixes
This patch fixes the following bugs:
- only reprogram bitdepth if it has changed since last call to hw_params.
- add locking inside ac97_read/write functions:
When reprogramming sample depth, the ac97 unit has to be disabled,
which should not be done in the middle of codec register accesses.
- retry timed-out codec register accesses.
- wait for status bits to set/clear when starting/stopping various
functional blocks; very important after reenabling AC97 unit else
sound may be distorted (e.g. high-pitch noise in 1kHz sine wave).
- clear fifos before/after starting/stopping RX/TX.
- longer timeouts waiting for PSC/AC97 ready after cold reset
with certain codecs this can take ridiculous amounts of time.
Run-tested on various Au1200 platforms with various codecs.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Zhenyu Wang [Tue, 8 Sep 2009 06:52:25 +0000 (14:52 +0800)]
drm/i915: fix mask bits setting
eDP is exclusive connector too, and add missing crtc_mask
setting for TV.
This fixes
http://bugzilla.kernel.org/show_bug.cgi?id=14139
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Reported-and-tested-by: Carlos R. Mafra <crmafra2@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Takashi Iwai [Tue, 8 Sep 2009 16:15:17 +0000 (18:15 +0200)]
ALSA: dummy - Increase MAX_PCM_SUBSTREAMS to 128
Increase the limit of PCM substreams to 128. The default value is
unchanged; only the max accept value is increased.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 8 Sep 2009 12:30:49 +0000 (14:30 +0200)]
ALSA: dummy - Add debug proc file
Added the debug proc file to see or change the snd_pcm_hardware fields
to emulate. The parameters can be changed by writing to a proc file like:
# echo periods_min 4 > /proc/asound/card1/dummy_pcm
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 8 Sep 2009 12:29:58 +0000 (14:29 +0200)]
ALSA: Add const prefix to proc helper functions
Add appropriate const prefix to char * arguments in proc helper functions.
Also fixed the caller side to be proper const pointers.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 8 Sep 2009 12:26:51 +0000 (14:26 +0200)]
ALSA: Re-export snd_pcm_format_name() function
Re-export snd_pcm_format_name() function to be used outside the PCM core.
As a first example, usbaudio is changed to use it now again.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Tue, 8 Sep 2009 09:03:41 +0000 (11:03 +0200)]
ALSA: hda - Use auto model for HP laptops with ALC268 codec
The HP laptops with ALC268 codec seem working better with model=auto
than model=toshiba; e.g. the auto model fixes missing digital outputs.
Let's fix quirk entry to choose auto model explicitly.
Tested-by: Jens Jorgensen <jbj1@ultraemail.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Sophie Hamilton [Tue, 8 Sep 2009 08:58:42 +0000 (10:58 +0200)]
ALSA: cs46xx - Fix minimum period size
Fix minimum period size for cs46xx cards. This fixes a problem in the
case where neither a period size nor a buffer size is passed to ALSA;
this is the case in Audacious, OpenAL, and others.
Signed-off-by: Sophie Hamilton <kernel@theblob.org>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Linus Torvalds [Mon, 7 Sep 2009 18:42:25 +0000 (11:42 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms: add LTE/GTE discard + rv515 two sided stencil register.
Linus Torvalds [Mon, 7 Sep 2009 18:41:15 +0000 (11:41 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
IMA: update ima_counts_put
Linus Torvalds [Mon, 7 Sep 2009 18:40:24 +0000 (11:40 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
gianfar: Fix build.
Linus Torvalds [Mon, 7 Sep 2009 18:40:15 +0000 (11:40 -0700)]
Merge git://git./linux/kernel/git/davem/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
pcmcia: add CNF-CDROM-ID for ide
Linus Torvalds [Mon, 7 Sep 2009 18:38:30 +0000 (11:38 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/anholt/drm-intel
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
agp/intel: support for new chip variant of IGDNG mobile
drm/i915: Unref old_obj on get_fence_reg() error path
drm/i915: increase default latency constant (v2 w/comment)
Mark Brown [Mon, 7 Sep 2009 17:09:58 +0000 (18:09 +0100)]
ASoC: Fix WM835x Out4 capture enumeration
It's the 8th enum of a zero indexed array. This is why I don't let
new drivers use these arrays of enums...
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
Takashi Iwai [Mon, 7 Sep 2009 13:52:30 +0000 (15:52 +0200)]
ALSA: Remove unneeded ifdef from sound/core.h
Remove the old hack that was needed for building alsa-driver modules
externally for old kernels.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Mon, 7 Sep 2009 13:50:18 +0000 (15:50 +0200)]
ALSA: Remove struct snd_monitor_file from public sound/core.h
The struct snd_monitor_file is used locally only in sound/core/init.c,
thus it should be moved there from the public sound/core.h.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Mark Brown [Mon, 7 Sep 2009 11:46:42 +0000 (12:46 +0100)]
ASoC: Remove unuused hw_read_t
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Clemens Ladisch [Mon, 7 Sep 2009 08:18:54 +0000 (10:18 +0200)]
sound: oxygen: work around MCE when changing volume
When the volume is changed continuously (e.g., when the user drags a
volume slider with the mouse), the driver does lots of I2C writes.
Apparently, the sound chip can get confused when we poll the I2C status
register too much, and fails to complete a read from it. On the PCI-E
models, the PCI-E/PCI bridge gets upset by this and generates a machine
check exception.
To avoid this, this patch replaces the polling with an unconditional
wait that is guaranteed to be long enough.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Johann Messner <johann.messner at jku.at>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 4 Sep 2009 10:19:36 +0000 (12:19 +0200)]
ALSA: dummy - Fake buffer allocations
Instead of allocating the real buffers, use a fake buffer and ignore
read/write in the dummy driver so that we can save the resources.
For mmap, a single page (unique to the direction, though) is reused
to all buffers.
When the app requires to read/write the real buffers, pass fake_buffer=0
module option at loading time. This will get back to the old behavior.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
ddiaz@cenditel.gob.ve [Sat, 5 Sep 2009 20:58:06 +0000 (16:28 -0430)]
ALSA: hda/realtek: Added support for CLEVO M540R subsystem, 6 channel + digital
The model clevo-m540r was created with 6-channel and digital support. All
functions verified except spdif. Tested with a VIT D2000 laptop which has:
[lspci extract]
Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller [8086:284b] (rev 03)
Subsystem: CLEVO/KAPOK Computer Device [1558:5409]
[/proc/asound/card0/codec\#0 header]
Codec: Realtek ALC883
Address: 0
Function Id: 0x1
Vendor Id: 0x10ec0883
Subsystem Id: 0x15585409
Revision Id: 0x100002
[Added a comment about HP mute and the model description by tiwai]
Signed-off-by: Dhionel Diaz <ddiaz@cenditel.gob.ve>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Dave Airlie [Mon, 7 Sep 2009 05:26:19 +0000 (15:26 +1000)]
drm/radeon/kms: add LTE/GTE discard + rv515 two sided stencil register.
This adds some rv350+ register for LTE/GTE discard,
and enables the rv515 two sided stencil register.
It also disables the DEPTHXY_OFFSET register which
can be used to workaround the CS checker.
Moves rs690 to proper place in rs600 and uses correct
table on rs600.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Mimi Zohar [Fri, 4 Sep 2009 17:08:46 +0000 (13:08 -0400)]
IMA: update ima_counts_put
- As ima_counts_put() may be called after the inode has been freed,
verify that the inode is not NULL, before dereferencing it.
- Maintain the IMA file counters in may_open() properly, decrementing
any counter increments on subsequent errors.
Reported-by: Ciprian Docan <docan@eden.rutgers.edu>
Reported-by: J.R. Okajima <hooanon05@yahoo.co.jp>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Acked-by: Eric Paris <eparis@redhat.com
Signed-off-by: James Morris <jmorris@namei.org>
David S. Miller [Sun, 6 Sep 2009 08:41:02 +0000 (01:41 -0700)]
gianfar: Fix build.
Reported by Michael Guntsche <mike@it-loops.com>
--------------------
Commit
38bddf04bcfe661fbdab94888c3b72c32f6873b3 gianfar: gfar_remove needs to call unregister_netdev()
breaks the build of the gianfar driver because "dev" is undefined in
this function. To quickly test rc9 I changed this to priv->ndev but I do
not know if this is the correct one.
--------------------
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 5 Sep 2009 23:38:12 +0000 (16:38 -0700)]
Linux 2.6.31-rc9
Linus Torvalds [Sat, 5 Sep 2009 21:59:00 +0000 (14:59 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: sbp2: fix freeing of unallocated memory
firewire: ohci: fix Ricoh R5C832, video reception
firewire: ohci: fix Agere FW643 and multiple cameras
firewire: core: fix crash in iso resource management
Roderick Colenbrander [Thu, 3 Sep 2009 15:57:23 +0000 (09:57 -0600)]
powerpc: Fix i8259 interrupt driver kernel crash on ML510
This patch fixes a null pointer exception caused by removal of
'ack()' for level interrupts in the Xilinx interrupt driver. A recent
change to the xilinx interrupt controller removed the ack hook for
level irqs.
Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 5 Sep 2009 21:57:04 +0000 (14:57 -0700)]
Merge git://git.infradead.org/~dwmw2/mtd-2.6.31
* git://git.infradead.org/~dwmw2/mtd-2.6.31:
JFFS2: add missing verify buffer allocation/deallocation
mtd: nftl: fix offset alignments
mtd: nftl: write support is broken
mtd: m25p80: fix null pointer dereference bug
Linus Torvalds [Sat, 5 Sep 2009 21:56:13 +0000 (14:56 -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:
block: Allow changing max_sectors_kb above the default 512
Linus Torvalds [Sat, 5 Sep 2009 21:55:30 +0000 (14:55 -0700)]
Merge branch 'fix/oxygen' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'fix/oxygen' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: oxygen: handle cards with missing EEPROM
sound: oxygen: fix MCLK rate for 192 kHz playback
Linus Torvalds [Sat, 5 Sep 2009 21:52:41 +0000 (14:52 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
tc: Fix unitialized kernel memory leak
pkt_sched: Revert tasklet_hrtimer changes.
net: sk_free() should be allowed right after sk_alloc()
gianfar: gfar_remove needs to call unregister_netdev()
ipw2200: firmware DMA loading rework
Linus Torvalds [Sat, 5 Sep 2009 21:51:45 +0000 (14:51 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: skcipher - Fix skcipher_dequeue_givcrypt NULL test
Linus Torvalds [Sat, 5 Sep 2009 21:51:24 +0000 (14:51 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Re-enable cpufreq suspend and resume code
Linus Torvalds [Sat, 5 Sep 2009 21:50:53 +0000 (14:50 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] fix csum_ipv6_magic()
[IA64] Fix warning in dma-mapping.c
Linus Torvalds [Sat, 5 Sep 2009 21:25:14 +0000 (14:25 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: actually enable the swapext compat handler
Linus Torvalds [Sat, 5 Sep 2009 21:24:33 +0000 (14:24 -0700)]
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 preempt count underflow in nilfs_btnode_prepare_change_key
Linus Torvalds [Sat, 5 Sep 2009 21:22:00 +0000 (14:22 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: don't assume existence of cpu0
Linus Torvalds [Sat, 5 Sep 2009 20:57:53 +0000 (13:57 -0700)]
Merge branch 'slab/urgent' of git://git./linux/kernel/git/penberg/slab-2.6
* 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU
Linus Torvalds [Sat, 5 Sep 2009 20:51:07 +0000 (13:51 -0700)]
Merge git://git./linux/kernel/git/agk/linux-2.6-dm
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
dm snapshot: fix on disk chunk size validation
dm exception store: split set_chunk_size
dm snapshot: fix header corruption race on invalidation
dm snapshot: refactor zero_disk_area to use chunk_io
dm log: userspace add luid to distinguish between concurrent log instances
dm raid1: do not allow log_failure variable to unset after being set
dm log: remove incorrect field from userspace table output
dm log: fix userspace status output
dm stripe: expose correct io hints
dm table: add more context to terse warning messages
dm table: fix queue_limit checking device iterator
dm snapshot: implement iterate devices
dm multipath: fix oops when request based io fails when no paths
Linus Torvalds [Sat, 5 Sep 2009 20:50:46 +0000 (13:50 -0700)]
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:
PCI SR-IOV: correct broken resource alignment calculations
Linus Torvalds [Sat, 5 Sep 2009 20:49:06 +0000 (13:49 -0700)]
Merge git://git./linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Fix bootup with mcount in some configs.
sparc64: Kill spurious NMI watchdog triggers by increasing limit to 30 seconds.
Linus Torvalds [Sat, 5 Sep 2009 20:48:37 +0000 (13:48 -0700)]
Merge branch 'perfcounters-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf_counter/powerpc: Fix cache event codes for POWER7
perf_counter: Fix /0 bug in swcounters
perf_counters: Increase paranoia level
Linus Torvalds [Sat, 5 Sep 2009 20:41:29 +0000 (13:41 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: atkbd - add Compaq Presario R4000-series repeat quirk
Input: i8042 - add Acer Aspire 5536 to the nomux list
Nicolas Pitre [Sat, 5 Sep 2009 04:25:37 +0000 (00:25 -0400)]
ext2: fix unbalanced kmap()/kunmap()
In ext2_rename(), dir_page is acquired through ext2_dotdot(). It is
then released through ext2_set_link() but only if old_dir != new_dir.
Failing that, the pkmap reference count is never decremented and the
page remains pinned forever. Repeat that a couple times with highmem
pages and all pkmap slots get exhausted, and every further kmap() calls
end up stalling on the pkmap_map_wait queue at which point the whole
system comes to a halt.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 5 Sep 2009 20:38:37 +0000 (13:38 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
ocfs2: ocfs2_write_begin_nolock() should handle len=0
ocfs2: invalidate dentry if its dentry_lock isn't initialized.
Linus Torvalds [Sat, 5 Sep 2009 20:27:10 +0000 (13:27 -0700)]
pty: don't limit the writes to 'pty_space()' inside 'pty_write()'
The whole write-room thing is something that is up to the _caller_ to
worry about, not the pty layer itself. The total buffer space will
still be limited by the buffering routines themselves, so there is no
advantage or need in having pty_write() artificially limit the size
somehow.
And what happened was that the caller (the n_tty line discipline, in
this case) may have verified that there is room for 2 bytes to be
written (for NL -> CRNL expansion), and it used to then do those writes
as two single-byte writes. And if the first byte written (CR) then
caused a new tty buffer to be allocated, pty_space() may have returned
zero when trying to write the second byte (LF), and then incorrectly
failed the write - leading to a lost newline character.
This should finally fix
http://bugzilla.kernel.org/show_bug.cgi?id=14015
Reported-by: Mikael Pettersson <mikpe@it.uu.se>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 5 Sep 2009 19:46:07 +0000 (12:46 -0700)]
n_tty: do O_ONLCR translation as a single write
When translating CR to CRNL in the n_tty line discipline, we did it as
two tty_put_char() calls. Which works, but is stupid, and has caused
problems before too with bad interactions with the write_room() logic.
The generic USB serial driver had that problem, for example.
Now the pty layer had similar issues after being moved to the generic
tty buffering code (in commit
d945cb9cce20ac7143c2de8d88b187f62db99bdc:
"pty: Rework the pty layer to use the normal buffering logic").
So stop doing the silly separate two writes, and do it as a single write
instead. That's what the n_tty layer already does for the space
expansion of tabs (XTABS), and it means that we'll now always have just
a single write for the CRNL to match the single 'tty_write_room()' test,
which hopefully means that the next time somebody screws up buffering,
it won't cause weeks of debugging.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Sat, 5 Sep 2009 18:17:13 +0000 (11:17 -0700)]
exec: do not sleep in TASK_TRACED under ->cred_guard_mutex
Tom Horsley reports that his debugger hangs when it tries to read
/proc/pid_of_tracee/maps, this happens since
"mm_for_maps: take ->cred_guard_mutex to fix the race with exec"
04b836cbf19e885f8366bccb2e4b0474346c02d
commit in 2.6.31.
But the root of the problem lies in the fact that do_execve() path calls
tracehook_report_exec() which can stop if the tracer sets PT_TRACE_EXEC.
The tracee must not sleep in TASK_TRACED holding this mutex. Even if we
remove ->cred_guard_mutex from mm_for_maps() and proc_pid_attr_write(),
another task doing PTRACE_ATTACH should not hang until it is killed or the
tracee resumes.
With this patch do_execve() does not use ->cred_guard_mutex directly and
we do not hold it throughout, instead:
- introduce prepare_bprm_creds() helper, it locks the mutex
and calls prepare_exec_creds() to initialize bprm->cred.
- install_exec_creds() drops the mutex after commit_creds(),
and thus before tracehook_report_exec()->ptrace_stop().
or, if exec fails,
free_bprm() drops this mutex when bprm->cred != NULL which
indicates install_exec_creds() was not called.
Reported-by: Tom Horsley <tom.horsley@att.net>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / log