06 Nov, 2009
2 commits
-
Instead of storing the PID number, take a reference to the task's pid
structure. This protects against duplicates due to PID overflows, and
using pid_vnr() ensures that the PID returned by snd_ctl_elem_info() is
correct as seen from the current namespace.Signed-off-by: Clemens Ladisch
Signed-off-by: Takashi Iwai -
We do not need to save the ID of the process that locked a control
because that information is already available in the owner's file data.Signed-off-by: Clemens Ladisch
Signed-off-by: Takashi Iwai
04 Nov, 2009
5 commits
-
* 'for-linus' of git://github.com/at91linux/linux-2.6-at91:
at91: at91sam9g45 family: identify several chip versions
avr32: add two new at91 to cpu.h definition -
cpu_is_xxx() macros are identifying generic at91sam9g45 chip. This patch adds
the capacity to differentiate Engineering Samples and final lots through the
inclusion of at91_cpu_fully_identify() and the related chip IDs with chip
version field preserved.Signed-off-by: Nicolas Ferre
Acked-by: Jean-Christophe PLAGNIOL-VILLARD
Acked-by: Hans-Christian Egtvedt -
Somme common drivers will need those at91 cpu_is_xxx() definitions. As
at91sam9g10 and at91sam9g45 are on the way to linus' tree, here is the patch
that adds those chips to cpu.h in AVR32 architecture.Signed-off-by: Nicolas Ferre
Signed-off-by: Haavard Skinnemoen -
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (38 commits)
MIPS: O32: Fix ppoll
MIPS: Oprofile: Rename cpu_type from godson2 to loongson2
MIPS: Alchemy: Fix hang with high-frequency edge interrupts
MIPS: TXx9: Fix spi-baseclk value
MIPS: bcm63xx: Set the correct BCM3302 CPU name
MIPS: Loongson 2: Set cpu_has_dc_aliases and cpu_icache_snoops_remote_store
MIPS: Avoid potential hazard on Context register
MIPS: Octeon: Use lockless interrupt controller operations when possible.
MIPS: Octeon: Use write_{un,}lock_irq{restore,save} to set irq affinity
MIPS: Set S-cache linesize to 64-bytes for MTI's S-cache
MIPS: SMTC: Avoid queing multiple reschedule IPIs
MIPS: GCMP: Avoid accessing registers when they are not present
MIPS: GIC: Random fixes and enhancements.
MIPS: CMP: Fix memory barriers for correct operation of amon_cpu_start
MIPS: Fix abs.[sd] and neg.[sd] emulation for NaN operands
MIPS: SPRAM: Clean up support code a little
MIPS: 1004K: Enable SPRAM support.
MIPS: Malta: Enable PCI 2.1 compatibility in PIIX4
MIPS: Kconfig: Fix duplicate default value for MIPS_L1_CACHE_SHIFT.
MIPS: MTI: Fix accesses to device registers on MIPS boards
...
03 Nov, 2009
33 commits
-
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PM: Remove some debug messages producing too much noise
PM: Fix warning on suspend errors
PM / Hibernate: Add newline to load_image() fail path
PM / Hibernate: Fix error handling in save_image()
PM / Hibernate: Fix blkdev refleaks
PM / yenta: Split resume into early and late parts (rev. 4) -
nr_processes() returns the sum of the per cpu counter process_counts for
all online CPUs. This counter is incremented for the current CPU on
fork() and decremented for the current CPU on exit(). Since a process
does not necessarily fork and exit on the same CPU the process_count for
an individual CPU can be either positive or negative and effectively has
no meaning in isolation.Therefore calculating the sum of process_counts over only the online
CPUs omits the processes which were started or stopped on any CPU which
has since been unplugged. Only the sum of process_counts across all
possible CPUs has meaning.The only caller of nr_processes() is proc_root_getattr() which
calculates the number of links to /proc as
stat->nlink = proc_root.nlink + nr_processes();You don't have to be all that unlucky for the nr_processes() to return a
negative value leading to a negative number of links (or rather, an
apparently enormous number of links). If this happens then you can get
failures where things like "ls /proc" start to fail because they got an
-EOVERFLOW from some stat() call.Example with some debugging inserted to show what goes on:
# ps haux|wc -l
nr_processes: CPU0: 90
nr_processes: CPU1: 1030
nr_processes: CPU2: -900
nr_processes: CPU3: -136
nr_processes: TOTAL: 84
proc_root_getattr. nlink 12 + nr_processes() 84 = 96
84
# echo 0 >/sys/devices/system/cpu/cpu1/online
# ps haux|wc -l
nr_processes: CPU0: 85
nr_processes: CPU2: -901
nr_processes: CPU3: -137
nr_processes: TOTAL: -953
proc_root_getattr. nlink 12 + nr_processes() -953 = -941
75
# stat /proc/
nr_processes: CPU0: 84
nr_processes: CPU2: -901
nr_processes: CPU3: -137
nr_processes: TOTAL: -954
proc_root_getattr. nlink 12 + nr_processes() -954 = -942
File: `/proc/'
Size: 0 Blocks: 0 IO Block: 1024 directory
Device: 3h/3d Inode: 1 Links: 4294966354
Access: (0555/dr-xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2009-11-03 09:06:55.000000000 +0000
Modify: 2009-11-03 09:06:55.000000000 +0000
Change: 2009-11-03 09:06:55.000000000 +0000I'm not 100% convinced that the per_cpu regions remain valid for offline
CPUs, although my testing suggests that they do. If not then I think the
correct solution would be to aggregate the process_count for a given CPU
into a global base value in cpu_down().This bug appears to pre-date the transition to git and it looks like it
may even have been present in linux-2.6.0-test7-bk3 since it looks like
the code Rusty patched in http://lwn.net/Articles/64773/ was already
wrong.Signed-off-by: Ian Campbell
Cc: Andrew Morton
Cc: Rusty Russell
Signed-off-by: Linus Torvalds -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: gpio-keys - use IRQF_SHARED
Input: winbond-cir - select LEDS_TRIGGERS
Input: i8042 - try to get stable CTR value when initializing
Input: atkbd - add a quirk for OQO 01+ multimedia keys -
* 'fixes-s3c-2632-rc5' of git://git.fluff.org/bjdooks/linux:
ARM: S3C2410: Fix sparse warnings in arch/arm/mach-s3c2410/gpio.c
ARM: S3C2440: mini2440: Fix spare warnings
ARM: S3C24XX: Fix warnings in arch/arm/plat-s3c24xx/gpio.c
ARM: S3C2440: mini2440: Fix missing CONFIG_S3C_DEV_USB_HOST
ARM: S3C24XX: arch/arm/plat-s3c24xx: Move dereference after NULL test
ARM: S3C: Fix adc function exports
ARM: S3C2410: Fix link if CONFIG_S3C2410_IOTIMING is not set
ARM: S3C24XX: Introduce S3C2442B CPU
ARM: S3C24XX: Define a macro to avoid compilation error
ARM: S3C: Add info for supporting circular DMA buffers
ARM: S3C64XX: Set rate of crystal mux
ARM: S3C64XX: Fix S3C64XX_CLKDIV0_ARM_MASK value -
* 'i2c-fixes' of git://git.fluff.org/bjdooks/linux:
i2c-mpc: Do not generate STOP after read.
i2c: imx: disable clock when it's possible to save power.
i2c: imx: only imx1 needs disable delay
i2c: imx: check busy bit when START/STOP -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
nilfs2: add zero-fill for new btree node buffers
nilfs2: fix irregular checkpoint creation due to data flush
nilfs2: fix dirty page accounting leak causing hang at write -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
mac80211: check interface is down before type change
cfg80211: fix NULL ptr deref
libertas if_usb: Fix crash on 64-bit machines
mac80211: fix reason code output endianness
mac80211: fix addba timer
ath9k: fix misplaced semicolon on rate control
b43: Fix DMA TX bounce buffer copying
mac80211: fix BSS leak
rt73usb.c : more ids
ipw2200: fix oops on missing firmware
gre: Fix dev_addr clobbering for gretap
sky2: set carrier off in probe
net: fix sk_forward_alloc corruption
pcnet_cs: add cis of PreMax PE-200 ethernet pcmcia card
r8169: Fix card drop incoming VLAN tagged MTU byte large jumbo frames
ibmtr: possible Read buffer overflow?
net: Fix RPF to work with policy routing
net: fix kmemcheck annotations
e1000e: rework disable K1 at 1000Mbps for 82577/82578
e1000e: config PHY via software after resets
... -
pm_runtime_idle() is somewhat noisy. Remove debug prints.
Signed-off-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki -
Fixes the point where we need to complete the power transition when
device suspend fails, so that we don't print warnings about devices
added to the device hierarchy after a failing suspend.[rjw: Modified changelog.]
Signed-off-by: Romit Dasgupta
Signed-off-by: Rafael J. Wysocki -
Finish a line by \n when load_image fails in the middle of loading.
Signed-off-by: Jiri Slaby
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki -
There are too many retval variables in save_image(). Thus error return
value from snapshot_read_next() may be ignored and only part of the
snapshot (successfully) written.Remove 'error' variable, invert the condition in the do-while loop
and convert the loop to use only 'ret' variable.Switch the rest of the function to consider only 'ret'.
Also make sure we end printed line by \n if an error occurs.
Signed-off-by: Jiri Slaby
Acked-by: Pavel Machek
Signed-off-by: Rafael J. Wysocki -
While cruising through the swsusp code I found few blkdev reference
leaks of resume_bdev.swsusp_read: remove blkdev_put altogether. Some fail paths do
not do that.
swsusp_check: make sure we always put a reference on fail paths
software_resume: all fail paths between swsusp_check and swsusp_read
omit swsusp_close. Add it in those cases. And since
swsusp_read doesn't drop the reference anymore, do
it here unconditionally.[rjw: Fixed a small coding style issue.]
Signed-off-by: Jiri Slaby
Signed-off-by: Rafael J. Wysocki -
Commit 0c570cdeb8fdfcb354a3e9cd81bfc6a09c19de0c
(PM / yenta: Fix cardbus suspend/resume regression) caused resume to
fail on systems with two CardBus bridges. While the exact nature
of the failure is not known at the moment, it can be worked around by
splitting the yenta resume into an early part, executed during the
early phase of resume, that will only resume the socket and power it
up if there was a card in it during suspend, and a late part,
executed during "regular" resume, that will carry out all of the
remaining yenta resume operations.Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14334, which is a
listed regression from 2.6.31.Signed-off-by: Rafael J. Wysocki
Acked-by: Dominik Brodowski
Reported-by: Stephen J. Gowdy
Tested-by: Jose Marino -
There is nothing that disallows gpio-keys to share it's IRQ line
w/ other drivers. Make it use IRQF_SHARED in request_irq().An example of other driver with which I'd like to share IRQ line
for GPIO buttons is ledtrig-gpio.Signed-off-by: Dmitry Eremin-Solenikov
Signed-off-by: Dmitry Torokhov -
drivers/input/misc/winbond-cir.c depends on LEDS_TRIGGERS so
add an appropriate select to drivers/input/misc/KconfigSigned-off-by: David Härdeman
Signed-off-by: Andrew Morton
Signed-off-by: Dmitry Torokhov -
If user presses keys while i8042 is being initialized there is a chance
that keyboard data will be mistaken for results of Read Control Register
command causing futher troubles. Work around this issue by reading CTR
several times and stop when we get matching results.Reported-and-tested-by: Dave Young
Signed-off-by: Dmitry Torokhov -
Adds missing initialization of newly allocated b-tree node buffers.
This avoids garbage data to be mixed in b-tree node blocks.Signed-off-by: Ryusuke Konishi
-
When nilfs flushes out dirty data to reduce memory pressure, creation
of checkpoints is wrongly postponed. This bug causes irregular
checkpoint creation especially in small footprint systems.To correct this issue, a timer for the checkpoint creation has to be
continued if a log writer does not create a checkpoint.This will do the correction.
Signed-off-by: Ryusuke Konishi
-
Bruno Prémont and Dunphy, Bill noticed me that NILFS will certainly
hang on ARM-based targets.I found this was caused by an underflow of dirty pages counter. A
b-tree cache routine was marking page dirty without adjusting page
account information.This fixes the dirty page accounting leak and resolves the hang on
arm-based targets.Reported-by: Bruno Prémont
Reported-by: Dunphy, Bill
Signed-off-by: Ryusuke Konishi
Tested-by: Bruno Prémont
Cc: stable -
The driver always ends a read with a STOP condition which
breaks subsequent I2C reads/writes in the same transaction as
these expect to do a repeated START(ReSTART).This will also help I2C multimaster as the bus will not be released
after the first read, but when the whole transaction ends.Signed-off-by: Joakim Tjernlund
Signed-off-by: Ben Dooks -
Enable clock before START, disable it after STOP.
Signed-off-by: Richard Zhao
Signed-off-by: Ben Dooks -
check cpu_is_mx1() when disable delay.
Signed-off-by: Richard Zhao
Signed-off-by: Ben Dooks -
The controller can't do anything else before it actually generates START/STOP.
So we check busy bit to make sure START/STOP is successfully finished.If we don't check busy bit, START/STOP may fail on some fast CPUs.
Signed-off-by: Richard Zhao
Signed-off-by: Ben Dooks -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
9p: fix readdir corner cases
9p: fix readlink
9p: fix a small bug in readdir for long directories -
For some strange reason the netif_running() check
ended up after the actual type change instead of
before, potentially causing all kinds of problems
if the interface is up while changing the type;
one of the problems manifests itself as a warning:WARNING: at net/mac80211/iface.c:651 ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]()
Hardware name: Aspire one
Pid: 2596, comm: wpa_supplicant Tainted: G W 2.6.31-10-generic #32-Ubuntu
Call Trace:
[] warn_slowpath_common+0x6d/0xa0
[] warn_slowpath_null+0x15/0x20
[] ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]
[] ieee80211_if_change_type+0x4a/0xc0 [mac80211]
[] ieee80211_change_iface+0x61/0xa0 [mac80211]
[] cfg80211_wext_siwmode+0xc7/0x120 [cfg80211]
[] ioctl_standard_call+0x58/0xf0(http://www.kerneloops.org/searchweek.php?search=ieee80211_teardown_sdata)
Cc: Arjan van de Ven
Cc: stable@kernel.org
Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
commit 211a4d12abf86fe0df4cd68fc6327cbb58f56f81
Author: Johannes Berg
Date: Tue Oct 20 15:08:53 2009 +0900cfg80211: sme: deauthenticate on assoc failure
introduced a potential NULL pointer dereference that
some people have been hitting for some reason -- the
params.bssid pointer is not guaranteed to be non-NULL
for what seems to be a race between various ways of
reaching the same thing.While I'm trying to analyse the problem more let's
first fix the crash. I think the real fix may be to
avoid doing _anything_ if it ended up being NULL, but
right now I'm not sure yet.I think
http://bugzilla.kernel.org/show_bug.cgi?id=14342
might also be this issue.Reported-by: Parag Warudkar
Tested-by: Parag Warudkar
Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
Revert "[IA64] fix percpu warnings"
[IA64] fix percpu warnings
[IA64] SMT friendly version of spin_unlock_wait()
[IA64] use printk_once() unaligned.c/io_common.c
[IA64] Require SAL 3.2 in order to do extended config space ops
[IA64] unsigned cannot be less than 0 in sn_hwperf_ioctl()
[IA64] Restore registers in the stack on INIT
[IA64] Re-implement spinaphores using ticket lock concepts
[IA64] Squeeze ticket locks back into 4 bytes. -
This reverts commit d0646f7b636d067d715fab52a2ba9c6f0f46b0d7, as
requested by Eric Sandeen.It can basically cause an ext4 filesystem to miss recovery (and thus get
mounted with errors) if the journal checksum does not match.Quoth Eric:
"My hand-wavy hunch about what is happening is that we're finding a
bad checksum on the last partially-written transaction, which is
not surprising, but if we have a wrapped log and we're doing the
initial scan for head/tail, and we abort scanning on that bad
checksum, then we are essentially running an unrecovered filesystem.But that's hand-wavy and I need to go look at the code.
We lived without journal checksums on by default until now, and at
this point they're doing more harm than good, so we should revert
the default-changing commit until we can fix it and do some good
power-fail testing with the fixes in place."See
http://bugzilla.kernel.org/show_bug.cgi?id=14354
for all the gory details.
Requested-by: Eric Sandeen
Cc: Theodore Tso
Cc: Alexey Fisher
Cc: Maxim Levitsky
Cc: Aneesh Kumar K.V
Cc: Mathias Burén
Signed-off-by: Linus Torvalds -
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: ensure initial page tables are setup for SMP systems
ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.
ARM: 5774/1: Fix Realview ARM1176PB board reboot
ARM: Fix errata 411920 workarounds
ARM: Fix sparsemem with SPARSEMEM_EXTREME enabled
ARM: Use GFP_DMA only for masks _less_ than 32-bit
ARM: integrator: allow Integrator to be built with highmem
ARM: Fix signal restart issues with NX and OABI compat -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: hda - Don't check invalid HP pin
ALSA: dummy - Fix descriptions of pcm_substreams parameter
ALSA: pcmcia: use dynamic debug infrastructure, deprecate CS_CHECK (sound)
ALSA: hda: Use quirk mask for Dell Inspiron Mini9/Vostro A90 using ALC268
sound: via82xx: deactivate DXS controls of inactive streams
ALSA: snd-usb-caiaq: Bump version number to 1.3.20
ALSA: snd-usb-caiaq: Lock on stream start/unpause
ALSA: snd-usb-caiaq: Missing lock around use of buffer positions
ALSA: sound/parisc: Move dereference after NULL test
ALSA: sound: Move dereference after NULL test and drop unnecessary NULL tests
ALSA: hda_intel: Add the Linux device ID for NVIDIA HDA controller
ALSA: pcsp - Fix nforce workaround
ALSA: SND_CS5535AUDIO: Remove the X86 platform dependency
ASoC: Amstrad Delta: add info about the line discipline requirement to Kconfig help text
ASoC: Fix possible codec_dai->ops NULL pointer problems
ALSA: hda - Fix capture source checks for ALC662/663 codecs
ASoC: Serialize access to dapm_power_widgets() -
…/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:
futex: Fix spurious wakeup for requeue_pi really
