With the locking cleanup in place (from "OF: Fixup resursive
locking code paths"), we can now do the conversion from the
rw_lock to a raw spinlock as required for preempt-rt.
The previous cleanup and this conversion were originally
separate since they predated when mainline got raw spinlock (in
commit c2f21ce2e3 "locking: Implement new raw_spinlock").
So, at that point in time, the cleanup was considered plausible
for mainline, but not this conversion. In any case, we've kept
them separate as it makes for easier review and better bisection.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[PG: taken from preempt-rt, update subject & add a commit log]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
There is no real reason to use a rwlock for devtree_lock. It even
could be a mutex, but unfortunately it's locked from cpu hotplug
paths which can't schedule :(
So it needs to become a raw lock on rt as well. The devtree_lock would
be the only user of a raw_rw_lock, so we are better off cleaning up the
recursive locking paths which allows us to convert devtree_lock to a
read_lock.
Here we do the standard thing of introducing __foo() as the "raw"
version of foo(), so that we can take better control of the locking.
The "raw" versions are not exported and are for internal use within
the file itself.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
The of_find_matching_node_and_match() function incorrectly sets the matched
entry to 'matches' when the compatible value of a node matches one of the
possible values. This results in incorrectly selecting the the first entry in
the 'matches' list as the matched entry. Fix this by noting down the result of
the call to of_match_node() and setting that as the matched entry.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Pull more s390 patches from Martin Schwidefsky:
"A couple of bug fixes: one of the transparent huge page primitives is
broken, the sched_clock function overflows after 417 days, the XFS
module has grown too large for -fpic and the new pci code has broken
normal channel subsystem notifications."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/chsc: fix SEI usage
s390/time: fix sched_clock() overflow
s390: use -fPIC for module compile
s390/mm: fix pmd_pfn() for thp
- fix(es) for compound buffers
- fix for dquot soft timer asserts due to overflow of d_blk_softlimit
- fix for regression in dir v2 code introduced in commit 20f7e9f3
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
iQIcBAABAgAGBQJQ9zKnAAoJENaLyazVq6ZORGcP/RemqCHJEw0a89Y0tLLLAcz/
Es97kJMESdvi3gX3JTdz3vC8LP21dSCR3k3MvVgucb8RsvGoiLixrmluIRxKb79M
DEmz9YJ/qxFIpnM9y46VxCYV+/ezxUDEv68wA6T2wJbof26nTLlTj2gAgqjvyWiF
R1c1OmdCsTfA257UvxfxSVixVnWv7E2io2ZXUGsrBkP4J9OMaMtn00UYOuP1YL8S
NJ44z9QAzTqVEbAfGeaeV/QVUJzMj/IqWCwF7YKEhfmccO/tPyN0+nMG2DI0Fp5e
cYGsi4JnaFbqE6Aa/7mu3kv8lYnPe0n3t9d3EwzxOEx+PAvuY8N0EW8Qa4c+805n
zXFvAroLgP0jYEEuIfEGYIwDPxG0xjor6ztu8e2twcIj6cDHzSpeYaDPnYvWJlwu
FiupnVu+3FX6mVY1jCealI47nOwzM12R7nXysqF3F6Sf95xGJtG3BoTIKioNqk1g
dzJGMQvwg/WLvquYb9W/ZNb1T314R23wdYtmI7gWJ74z9IQqWCZBWFYyBhQ8y1Pr
Vf3LFjzqNqqnYNzoe8Wnn9wKQ57Es7onAo34Y9HZCOkslZsn5nKriNTXNN6Q9Upc
5RKvj1CbTpKAJYrrhWryI1HtlDKqqtMFdmRQulSu+O9ZJuWZh4XNTu4t3oewt0Ac
5otZwOdk53V3tGxt3prs
=gA4q
-----END PGP SIGNATURE-----
Merge tag 'for-linus-v3.8-rc4' of git://oss.sgi.com/xfs/xfs
Pull xfs bugfixes from Ben Myers:
- fix(es) for compound buffers
- fix for dquot soft timer asserts due to overflow of d_blk_softlimit
- fix for regression in dir v2 code introduced in commit 20f7e9f372
("xfs: factor dir2 block read operations")
* tag 'for-linus-v3.8-rc4' of git://oss.sgi.com/xfs/xfs:
xfs: recalculate leaf entry pointer after compacting a dir2 block
xfs: remove int casts from debug dquot soft limit timer asserts
xfs: fix the multi-segment log buffer format
xfs: fix segment in xfs_buf_item_format_segment
xfs: rename bli_format to avoid confusion with bli_formats
xfs: use b_maps[] for discontiguous buffers
* cpuidle initialization regression fix from Krzysztof Mazur.
* cpuidle fix for power usage fields handling from Daniel Lezcano.
* ACPI build fix from Yinghai Lu.
-
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=4ifX
-----END PGP SIGNATURE-----
Merge tag 'pm+acpi-for-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- cpuidle regression fix related to the initialization of state
kobjects from Krzysztof Mazur.
- cpuidle fix removing some not very useful code and making some
user-visible problems go away at the same time. From Daniel Lezcano.
- ACPI build fix from Yinghai Lu.
* tag 'pm+acpi-for-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpuidle: remove the power_specified field in the driver
ACPI / glue: Fix build with ACPI_GLUE_DEBUG set
cpuidle: fix number of initialized/destroyed states
Dave Jones hit this assert when doing a compile on recent git, with
CONFIG_XFS_DEBUG enabled:
XFS: Assertion failed: (char *)dup - (char *)hdr == be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup)), file: fs/xfs/xfs_dir2_data.c, line: 828
Upon further digging, the tag found by xfs_dir2_data_unused_tag_p(dup)
contained "2" and not the proper offset, and I found that this value was
changed after the memmoves under "Use a stale leaf for our new entry."
in xfs_dir2_block_addname(), i.e.
memmove(&blp[mid + 1], &blp[mid],
(highstale - mid) * sizeof(*blp));
overwrote it.
What has happened is that the previous call to xfs_dir2_block_compact()
has rearranged things; it changes btp->count as well as the
blp array. So after we make that call, we must recalculate the
proper pointer to the leaf entries by making another call to
xfs_dir2_block_leaf_p().
Dave provided a metadump image which led to a simple reproducer
(create a particular filename in the affected directory) and this
resolves the testcase as well as the bug on his live system.
Thanks also to dchinner for looking at this one with me.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Tested-by: Dave Jones <davej@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
The int casts here make it easy to trigger an assert with a large
soft limit. For example, set a >4TB soft limit on an empty volume
to reproduce a (0 > -x) comparison due to an overflow of
d_blk_softlimit.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Per Dave Chinner suggestion, this patch:
1) Corrects the detection of whether a multi-segment buffer is
still tracking data.
2) Clears all the buffer log formats for a multi-segment buffer.
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Not every segment in a multi-segment buffer is dirty in a
transaction and they will not be outputted. The assert in
xfs_buf_item_format_segment() that checks for the at least
one chunk of data in the segment to be used is not necessary
true for multi-segmented buffers.
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Rename the bli_format structure to __bli_format to avoid
accidently confusing them with the bli_formats pointer.
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Commits starting at 77c1a08 introduced a multiple segment support
to xfs_buf. xfs_trans_buf_item_match() could not find a multi-segment
buffer in the transaction because it was looking at the single segment
block number rather than the multi-segment b_maps[0].bm.bn. This
results on a recursive buffer lock that can never be satisfied.
This patch:
1) Changed the remaining b_map accesses to be b_maps[0] accesses.
2) Renames the single segment b_map structure to __b_map to avoid
future confusion.
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
In commit 281dc5c5ec ("Give up on pushing CC_OPTIMIZE_FOR_SIZE") we
already changed the actual default value, but the help-text still
suggested 'y'. Fix the help text too, for all the same reasons.
Sadly, -Os keeps on generating some very suboptimal code for certain
cases, to the point where any I$ miss upside is swamped by the downside.
The main ones are:
- using "rep movsb" for memcpy, even on CPU's where that is
horrendously bad for performance.
- not honoring branch prediction information, so any I$ footprint you
win from smaller code, you lose from less code density in the I$.
- using divide instructions when that is very expensive.
Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the build error:
drivers/built-in.o: In function `twl_probe':
drivers/mfd/twl-core.c:1256: undefined reference to `devm_regmap_init_i2c'
make: *** [vmlinux] Error 1
Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[ Samuel is busy, taking it directly - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[ We should make fun of people who can't speel too, but then we'd have
no time for any real work at all - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 1b963c81b1 ("lockdep, rwsem: provide down_write_nest_lock()")
contains a bug in a codepath when CONFIG_DEBUG_LOCK_ALLOC is disabled,
which causes down_read() to be called instead of down_write() by mistake
on such configurations. Fix that.
Reported-and-tested-by: Andrew Clayton <andrew@digital-domain.net>
Reported-and-tested-by: Zlatko Calusic <zlatko.calusic@iskon.hr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yet a few more fixes popped up in this week.
The biggest change here is the addition of pinctrl support for Atmel,
which turned out to be almost mandatory to make things working.
The rest are a few fixes for M-Audio usb-audio device and a fix for
regression of HD-audio HDMI codecs with alsactl in the recent kernel.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=Sd6n
-----END PGP SIGNATURE-----
Merge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull second round of sound fixes from Takashi Iwai:
"Yet a few more fixes popped up in this week.
The biggest change here is the addition of pinctrl support for Atmel,
which turned out to be almost mandatory to make things working.
The rest are a few fixes for M-Audio usb-audio device and a fix for
regression of HD-audio HDMI codecs with alsactl in the recent kernel."
* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/hdmi - Work around "alsactl restore" errors
ALSA: usb-audio: selector map for M-Audio FT C400
ALSA: usb-audio: M-Audio FT C400 skip packet quirk
ALSA: usb-audio: correct M-Audio C400 clock source quirk
ALSA: usb - fix race in creation of M-Audio Fast track pro driver
ASoC: atmel-ssc: add pinctrl selection to driver
ARM: at91/dts: add pinctrl support for SSC peripheral
Pull scsi target fixes from Nicholas Bellinger:
"This includes an important >= v3.6 regression bugfix for active I/O
shutdown (Roland), some TMR related failure / corner cases fixes for
long outstanding I/O (Roland), two FCoE target mode fabric fabric role
fixes (MDR), a fix for an incorrect sense code during LUN
communication failure (Dr. Hannes), plus a handful of other minor
fixes.
There are still some outstanding zero-length control CDB regression
fixes that need to be addressed for v3.8, that will be coming in a
follow-up PULL request."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
iscsi-target: Fix CmdSN comparison (use cmd->cmd_sn instead of cmd->stat_sn)
target: Release se_cmd when LUN lookup fails for TMR
target: Fix use-after-free in LUN RESET handling
target: Fix missing CMD_T_ACTIVE bit regression for pending WRITEs
tcm_fc: Do not report target role when target is not defined
tcm_fc: Do not indicate retry capability to initiators
target: Use TCM_NO_SENSE for initialisation
target: Introduce TCM_NO_SENSE
target: use correct sense code for LUN communication failure
Pull ext3 and udf fixes from Jan Kara:
"One ext3 performance regression fix and one udf regression fix (oops
on interrupted mount)."
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
UDF: Fix a null pointer dereference in udf_sb_free_partitions
jbd: don't wake kjournald unnecessarily
Pull x86 fixes from Peter Anvin:
"This is mainly a workaround for a bug in Sandy Bridge graphics which
causes corruption of certain memory pages."
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/Sandy Bridge: Sandy Bridge workaround depends on CONFIG_PCI
x86/Sandy Bridge: mark arrays in __init functions as __initconst
x86/Sandy Bridge: reserve pages when integrated graphics is present
x86, efi: correct precedence of operators in setup_efi_pci
Timur Tabi no longer works for Freescale, so update the email address
and status for all of his maintained projects.
Also mark the QE library as orphaned, for lack of interest in
maintaining it.
The CS4270 driver is marked as "Odd Fixes" because appropriate hardware
is no longer available.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the requested firmware file size is 0 bytes in the filesytem, we
will try to vmalloc(0), which causes a warning:
vmalloc: allocation failure: 0 bytes
kworker/1:1: page allocation failure: order:0, mode:0xd2
__vmalloc_node_range+0x164/0x208
__vmalloc_node+0x4c/0x58
vmalloc+0x38/0x44
_request_firmware_load+0x220/0x6b0
request_firmware+0x64/0xc8
wl18xx_setup+0xb4/0x570 [wl18xx]
wlcore_nvs_cb+0x64/0x9f8 [wlcore]
request_firmware_work_func+0x94/0x100
process_one_work+0x1d0/0x750
worker_thread+0x184/0x4ac
kthread+0xb4/0xc0
To fix this, check whether the file size is less than or equal to zero
in fw_read_file_contents().
Cc: stable <stable@vger.kernel.org> [3.7]
Signed-off-by: Luciano Coelho <coelho@ti.com>
Acked-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the default iosched is built as module, the kernel may deadlock
while trying to load the iosched module on device probe if the probing
was running off async. This is because async_synchronize_full() at
the end of module init ends up waiting for the async job which
initiated the module loading.
async A modprobe
1. finds a device
2. registers the block device
3. request_module(default iosched)
4. modprobe in userland
5. load and init module
6. async_synchronize_full()
Async A waits for modprobe to finish in request_module() and modprobe
waits for async A to finish in async_synchronize_full().
Because there's no easy to track dependency once control goes out to
userland, implementing properly nested flushing is difficult. For
now, make module init perform async_synchronize_full() iff module init
has queued async jobs as suggested by Linus.
This avoids the described deadlock because iosched module doesn't use
async and thus wouldn't invoke async_synchronize_full(). This is
hacky and incomplete. It will deadlock if async module loading nests;
however, this works around the known problem case and seems to be the
best of bad options.
For more details, please refer to the following thread.
http://thread.gmane.org/gmane.linux.kernel/1420814
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Alex Riesen <raa.lkml@gmail.com>
Tested-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Alex Riesen <raa.lkml@gmail.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
cbc0dd1 "s390/pci: CHSC PCI support for error and availability events"
introduced a new SEI notification type as part of pci support.
The way SEI was called with nt2 and nt0 consecutive broke the nt0
stuff used for channel subsystem notifications.
The reason why this was broken with the mentioned patch is that you
cannot selectively disable type 0 notifications (so even when asked
for type 2 only, type 0 could be presented).
The way to do it is to tell SEI which types of notification you can
process and -this is the important part- look at the SEI result which
notification type you actually received.
Reviewed-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Tested-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Converting a 64 Bit TOD format value to nanoseconds means that the value
must be divided by 4.096. In order to achieve that we multiply with 125
and divide by 512.
When used within sched_clock() this triggers an overflow after appr.
417 days. Resulting in a sched_clock() return value that is much smaller
than previously and therefore may cause all sort of weird things in
subsystems that rely on a monotonic sched_clock() behaviour.
To fix this implement a tod_to_ns() helper function which converts TOD
values without overflow and call this function from both places that
open coded the conversion: sched_clock() and kvm_s390_handle_wait().
Cc: stable@kernel.org
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
FSI - DA7210 needs amixer settings to use it.
This patch adds quick setting guide
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There have been a number of new syscalls introduced to arch/arm/ since
the compat layer was implemented for arm64, so add pointers to the
relevant functions to the compat syscall table.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
When "alsactl restore" is performed on HDMI codecs, it tries to
restore the channel map value since the channel map controls are
writable. But hdmi_chmap_ctl_put() returns -EBADFD when no PCM stream
is assigned yet, and this results in an error message from alsactl.
Although the error is harmless, it's certainly ugly and can be
regarded as a regression.
As a workaround, this patch changes the return code in such a case to
be zero for making others happy. (A slight excuse is: when the chmap
is changed through the proper alsa-lib API, the PCM status is checked
there anyway, so we don't have to be too strict in the kernel side.)
Cc: <stable@vger.kernel.org> [v3.7+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
We realized that the power usage field is never filled and when it
is filled for tegra, the power_specified flag is not set causing all
of these values to be reset when the driver is initialized with
set_power_state().
However, the power_specified flag can be simply removed under the
assumption that the states are always backward sorted, which is the
case with the current code.
This change allows the menu governor select function and the
cpuidle_play_dead() to be simplified. Moreover, the
set_power_states() function can removed as it does not make sense
any more.
Drop the power_specified flag from struct cpuidle_driver and make
the related changes as described above.
As a consequence, this also fixes the bug where on the dynamic
C-states system, the power fields are not initialized.
[rjw: Changelog]
References: https://bugzilla.kernel.org/show_bug.cgi?id=42870
References: https://bugzilla.kernel.org/show_bug.cgi?id=43349
References: https://lkml.org/lkml/2012/10/16/518
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Due to a series of problems with the handling of Atmel, a combination of
making changes that make other branches instantly buggy and a general
failure to deal with the resulting issues effectively, v3.8 Atmel audio
currently won't work at all for DT boards without adding pinctrl
definitions and a request for those.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=W+cl
-----END PGP SIGNATURE-----
Merge tag 'asoc-atmel-pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: atmel: Fixes for pinctrl
Due to a series of problems with the handling of Atmel, a combination of
making changes that make other branches instantly buggy and a general
failure to deal with the resulting issues effectively, v3.8 Atmel audio
currently won't work at all for DT boards without adding pinctrl
definitions and a request for those.
to tracing_on" caused two regressions.
1) The irqs off latency tracer no longer starts if tracing_on is off
when the tracer is set, and then tracing_on is enabled. The tracing_on
file needs the hook that tracing_enabled had to enable tracers if they
request it (call the tracer's start() method).
2) That commit had a separate change that really should have been a
separate patch, but it must have been added accidently with the -a
option of git commit. But as the change is still related to the commit
it wasn't noticed in review. That change, changed the way blocking is
done by the trace_pipe file with respect to the tracing_on settings.
I've been told that this change breaks current userspace, and this
specific change is being reverted.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJQ9MZ/AAoJEOdOSU1xswtMtVcH/00HZv5RqIyMvy+3xhqkQuT7
eqP7VpW1nqrpvzYqZz2G/x0CNtCa+ufpzYrcGJWoiNe7cOP8hYWuCR+rLzhHev+a
7x1jZgVGWNCnLvC339PRu+65QpLt0qmWUR0w/F+93Acrdx9LrFtnpH9OgjbgM8m2
5BJVHVBE3vuGdGFwRWPJuEOy62RFxsqlD2MhgXlXyCTUJPQso/3Ef+ft4inJKQ2r
Ffi3PlD3j3TPtSaPPCit72zYqmstvrUsgl0PWjVCsWhhTOA/ZQzlKak0S/uLqT9x
tCqJYFER2SaYx77klRMN0lbXXt6teue0WZnmGZuUQUANGpbalVTQQ4xlxAr34Uc=
=ZBYA
-----END PGP SIGNATURE-----
Merge tag 'trace-3.8-rc3-regression-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing regression fixes from Steven Rostedt:
"The clean up patch commit 0fb9656d95 "tracing: Make tracing_enabled
be equal to tracing_on" caused two regressions.
1) The irqs off latency tracer no longer starts if tracing_on is off
when the tracer is set, and then tracing_on is enabled. The
tracing_on file needs the hook that tracing_enabled had to enable
tracers if they request it (call the tracer's start() method).
2) That commit had a separate change that really should have been a
separate patch, but it must have been added accidently with the -a
option of git commit. But as the change is still related to the
commit it wasn't noticed in review. That change, changed the way
blocking is done by the trace_pipe file with respect to the
tracing_on settings. I've been told that this change breaks
current userspace, and this specific change is being reverted."
* tag 'trace-3.8-rc3-regression-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix regression of trace_pipe
tracing: Fix regression with irqsoff tracer and tracing_on file
The debugfs optimisations merged in v3.8 weren't my finest hour, there
were a number of cases that the more complex algorithm made worse
especially around the error handling. This patch series should address
those issues.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=unOt
-----END PGP SIGNATURE-----
Merge tag 'regmap-debugfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap debugfs optimisation fixes from Mark Brown:
"The debugfs optimisations merged in v3.8 weren't my finest hour, there
were a number of cases that the more complex algorithm made worse
especially around the error handling. This patch series should
address those issues."
* tag 'regmap-debugfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: debugfs: Make sure we store the last entry in the offset cache
regmap: debugfs: Ensure a correct return value for empty caches
regmap: debugfs: Discard the cache if we fail to allocate an entry
regmap: debugfs: Fix check for block start in cached seeks
regmap: debugfs: Fix attempts to read nonexistant register blocks
A few fixes for the regulator subsystems, a few driver specific things
plus a fix for the interaction between regultor_can_change_voltage() and
continuous voltage ranges both of which were added for this release.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=a/VB
-----END PGP SIGNATURE-----
Merge tag 'regulator-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A few fixes for the regulator subsystems, a few driver specific things
plus a fix for the interaction between regultor_can_change_voltage()
and continuous voltage ranges both of which were added for this
release."
* tag 'regulator-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: max8998: Ensure enough delay time for max8998_set_voltage_buck_time_sel
regulator: max8998: Use uV in voltage_map_desc
regulator: max8997: Use uV in voltage_map_desc
regulator: core: Fix comment for regulator_register()
regulator: core: Fix continuous_voltage_range case in regulator_can_change_voltage
regulator: s5m8767: Fix probe failure due to stack corruption
This patch fixes a regression caused by commit bff943af6f "udf: Fix memory
leak when mounting" due to which it was triggering a kernel null point
dereference in case of interrupted mount OR when allocating memory to
sbi->s_partmaps failed in function udf_sb_alloc_partition_maps.
Reported-and-tested-by: James Hogan <james@albanarts.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Don't send an extra wakeup to kjournald in the case where we
already have the proper target in j_commit_request, i.e. that
commit has already been requested for commit.
commit d9b0193 "jbd: fix fsync() tid wraparound bug" changed
the logic leading to a wakeup, but it caused some extra wakeups
which were found to lead to a measurable performance regression.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2 fixes to prevent unconditional re-compile of dts files on arm and arm64.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJQ9HKkAAoJEMhvYp4jgsXihT0H/RSUuhC02eQV7mkIJwPVROwd
8nbdRAes22g2nbBN0NDDsZ6GCGjVBx/rt1MhS/yhzE6GqKkT+MnpQ+yE3A0xK+BP
bdqYFmajXauHNrPo6jp9HRwui7BKU9GMl2bkN39kALtY35Fo25XaGelsC+ue6KAg
VFA+iuHG9wEaVbYX/77IyTDjSECKbrcfGGlN1WHIIrFjIQDMA7BjoNb9kyT5oS+l
kdS5n5MC1rCeg7lKD1ScVqPye5eOFjk35ZjJEfkfR/dXRsds1/wp17lH4rxC6Fcp
/9eEK3GeYAueQCTyHRDmkUtMGCA9qij0cUjVQkYf7Je6pHdQ5x7/eQXiHcKEv/M=
=cMYU
-----END PGP SIGNATURE-----
Merge tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux
Pull devicetree fixes from Rob Herring:
"Two fixes to prevent unconditional re-compile of dts files on arm and
arm64."
* tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux:
ARM: dts: prevent *.dtb from always being rebuilt
arm64: dts: prevent *.dtb from always being rebuilt
Andrew Morton pointed this out a month ago, and then I completely forgot
about it.
If we read a partial last page of a block device, we will zero out the
end of the page, but since that page can then be mapped into user space,
we should also make sure to flush the cache on architectures that have
virtual caches. We have the flush_dcache_page() function for this, so
use it.
Now, in practice this really never matters, because nobody sane uses
virtual caches to begin with, and they largely exist on old broken RISC
arhitectures.
And even if you did run on one of those obsolete CPU's, the whole "mmap
and access the last partial page of a block device" behavior probably
doesn't actually exist. The normal IO functions (read/write) will never
see the zeroed-out part of the page that migth not be coherent in the
cache, because they honor the size of the device.
So I'm marking this for stable (3.7 only), but I'm not sure anybody will
ever care.
Pointed-out-by: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@vger.kernel.org # 3.7
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Most of commits found here are for ASoC device specific fixes,
arizona, cs4271, wm5102, wm2200, etc, in addition to a couple of
memory leak fixes in ASoC core.
Other than that, regression fixes in HD-audio and USB-audio, and
a fix for new Realtek codecs.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=iVG2
-----END PGP SIGNATURE-----
Merge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Most of commits found here are for ASoC device specific fixes,
arizona, cs4271, wm5102, wm2200, etc, in addition to a couple of
memory leak fixes in ASoC core.
Other than that, regression fixes in HD-audio and USB-audio, and a fix
for new Realtek codecs."
* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (30 commits)
ALSA: usb-audio: Fix NULL dereference by access to non-existing substream
ALSA: hda - Add support of new codec ALC284
ALSA: usb-audio: Make ebox44_table static
ALSA: hdspm - Fix wordclock status on AES32
Revert "ALSA: hda - Shut up pins at power-saving mode with Conexnat codecs"
ALSA: hda - Disable runtime D3 for Intel CPT & co
ALSA: pxa27x: fix ac97 warm reset
ALSA: pxa27x: fix ac97 cold reset
ASoC: wm_adsp: Ensure that block writes are from DMA aligned addresses
ASoC: wm2000: Fix sense of speech clarity enable
ASoC: wm5100: Remove DSP B and left justified formats
ASoC: arizona: Remove DSP B and left justified AIF modes
ASoC: wm2200: Remove DSP B and left justified AIF modes
ASoC: wm5102: Improve speaker enable performance
ASoC: core: fix the memory leak in case of remove_aux_dev()
ASoC: core: fix the memory leak in case of device_add() failure
ASoC: cs42l52: Catch no-match case in cs42l52_get_clk
ASoC: lm49453: Update lm49453_reg_defs values as per LM49453 HW revision-B
ASoC: lm49453: Fix adc, mic and sidetone volume ranges
ASoC: arizona: Correct FLL source definitions
...
Commit 0fb9656d "tracing: Make tracing_enabled be equal to tracing_on"
changes the behaviour of trace_pipe, ie. it makes trace_pipe return if
we've read something and tracing is enabled, and this means that we have
to 'cat trace_pipe' again and again while running tests.
IMO the right way is if tracing is enabled, we always block and wait for
ring buffer, or we may lose what we want since ring buffer's size is limited.
Link: http://lkml.kernel.org/r/1358132051-5410-1-git-send-email-bo.li.liu@oracle.com
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Here are a number of small fixes to staging drivers for your 3.8-rc3
tree.
Well, the omapdrm fixes aren't really "small" but they were waiting on a
number of other drm patches to go in through the drm tree, and got
delayed by my vacation over the holidays. They are totally
self-contained, everyone involved have acked them, and they fix issues
that people have been having with the driver.
Other than that one, it's a bunch of tiny bugfixes for a number of
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
iEYEABECAAYFAlDzjqQACgkQMUfUDdst+ym/FgCfTOKtRk2YP9FJ+GlJnO7Ij2Ez
r/AAoJhhlxUwn59zhyCA6iIOLLix0tfU
=llcV
-----END PGP SIGNATURE-----
Merge tag 'staging-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg Kroah-Hartman:
"Here are a number of small fixes to staging drivers for your 3.8-rc3
tree.
Well, the omapdrm fixes aren't really "small" but they were waiting on
a number of other drm patches to go in through the drm tree, and got
delayed by my vacation over the holidays. They are totally
self-contained, everyone involved have acked them, and they fix issues
that people have been having with the driver.
Other than that one, it's a bunch of tiny bugfixes for a number of
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'staging-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (36 commits)
staging: zram: fix invalid memory references during disk write
staging: tidspbridge: use prepare/unprepare on dsp clocks
staging: tidspbridge: Fix build breakage due to splitting CM functions.
staging: comedi: comedi_test: fix race when cancelling command
staging: comedi: Kconfig: COMEDI_NI_AT_A2150 should select COMEDI_FC
staging: comedi: prevent auto-unconfig of manually configured devices
staging: comedi: fix minimum AO period for NI 625x and NI 628x
staging: vme_pio2: fix oops on module unloading
staging: speakup: avoid out-of-range access in synth_add()
staging: speakup: avoid out-of-range access in synth_init()
staging: rtl8192e: Fix failure to check pci_map_single()
staging: rtl8187se: Fix failure to check pci_map_single()
staging: drm/imx: fix double free bug in error path
staging: drm/imx: several bug fixes
staging: drm/imx: check return value of ipu_reset()
staging: drm/omap: fix flags in dma buf exporting
staging: drm/omap: use omapdss low level API
staging/fwserial: Update TODO file per reviewer comments
staging/fwserial: Limit tx/rx to 1394-2008 spec maximum
staging/fwserial: Refine Kconfig help text
...
