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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
Minimal omap fixes for the -rc series:
- A build fix for recently merged omap DRM changes
- Regression fixes from the common clock framework conversion
for omap4 audio and omap2 reboot
- Regression fix for pandaboard WLAN control UART muxing caused by
u-boot only muxing essential pins nowadays
- Timer iteration fix for CONFIG_OF_DYNAMIC
- A section mismatch fix for ocp2scp init
* tag 'omap-for-v3.8-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (306 commits)
ARM: OMAP2+: omap4-panda: add UART2 muxing for WiLink shared transport
ARM: OMAP2+: DT node Timer iteration fix
ARM: OMAP2+: Fix section warning for omap_init_ocp2scp()
ARM: OMAP2+: fix build break for omapdrm
ARM: OMAP2: Fix missing omap2xxx_clkt_vps_late_init function calls
ARM: OMAP4: hwmod_data: Correct IDLEMODE for McPDM
ARM: OMAP4: clock data: Lock ABE DPLL on all revisions
+ Linux 3.8-rc4
Signed-off-by: Olof Johansson <olof@lixom.net>
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Add the UART2 muxing data to the board file (this used to be,
erroneously, done in the bootloader).
Cc: stable <stable@vger.kernel.org> [3.7]
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The iterator correctly handles of_node_put() calls.
Remove it before continue'ing the loop.
Without this patch you get the following with
CONFIG_OF_DYNAMIC set:
ERROR: Bad of_node_put() on /ocp/timer@44e31000!
[<c001329c>] (unwind_backtrace+0x0/0xe0) from [<c03dd8f0>] (of_node_release+0x2c/0xa0)!
[<c03dd8f0>] (of_node_release+0x2c/0xa0) from [<c03ddea0>] (of_find_matching_node_and_match+0x78/0x90)!
[<c03ddea0>] (of_find_matching_node_and_match+0x78/0x90) from [<c06d349c>] (omap_get_timer_dt+0x78/0x90)!
[<c06d349c>] (omap_get_timer_dt+0x78/0x90) from [<c06d3664>] (omap_dm_timer_init_one.clone.2+0x34/0x2bc)!
[<c06d3664>] (omap_dm_timer_init_one.clone.2+0x34/0x2bc) from [<c06d3a2c>] (omap2_gptimer_clocksource_init.clone.4+0x24/0xa8)!
[<c06d3a2c>] (omap2_gptimer_clocksource_init.clone.4+0x24/0xa8) from [<c06cca58>] (time_init+0x20/0x30)!
[<c06cca58>] (time_init+0x20/0x30) from [<c06c9690>] (start_kernel+0x1a8/0x2fc)!
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Acked-by: Jon Hunter <jon-hunter@ti.com>
[tony@atomide.com: updated description per Jon]
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Otherwise we will get:
WARNING: vmlinux.o(.text+0x1d4f0): Section mismatch in reference from the
function omap_init_ocp2scp() to the function .init.text:omap_device_build()
The function omap_init_ocp2scp() references
the function __init omap_device_build().
This is often because omap_init_ocp2scp lacks a __init
annotation or the annotation of omap_device_build is wrong.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Fixes compile break with 3.8-rc4.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.8-rc4/fixes
A few OMAP integration fixes for v3.8-rc, for OMAP4 audio and OMAP2 reboot.
Basic test logs are available here:
http://www.pwsan.com/omap/testlogs/prcm_fixes_c_v3.8-rc/20130121073904/
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During the migration to the common clock framework, calls to the
functions omap2xxx_clkt_vps_late_init() were not preserved for
OMAP2420 and OMAP2430. This causes the variables "sys_ck_rate" and
"curr_prcm_set" to be uninitialised on boot. On reboot, this causes the
following error message to be displayed because the appropriate MPU
clock frequency (derived from sys_ck_rate) cannot be found.
"Could not set MPU rate to 4294MHz"
Fix this by adding back calls to omap2xxx_clkt_vps_late_init() in the
OMAP2420 and OMAP2430 clock initialisation code.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
[paul@pwsan.com: dropped the duplicated call to
omap2xxx_clkt_vps_check_bootloader_rates() after consultation with Jon;
updated patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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McPDM need to be configured to NO_IDLE mode when it is in used otherwise
vital clocks will be gated which results 'slow motion' audio playback.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[paul@pwsan.com: copy patch description into hwmod data comments]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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To avoid issues with audio caused by non locked ABE DPLL we should
make sure it is locked in all OMAP4 revisions.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jon Hunter <jon-hunter@ti.com>
[paul@pwsan.com: cleaned up patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
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
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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>
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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>
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The xfs module uses a lot of tracepoint, with TRACEPOINTS=y and a
few debugging options the GOT table of the xfs module will get
bigger than 4K. To get a working xfs module it needs to be compiled
with -fPIC instead of -fpic. To play safe use -fPIC for all modules.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The pfn calculation in pmd_pfn() is broken for thp, because it uses
HPAGE_SHIFT instead of the normal PAGE_SHIFT. This is fixed by removing
the distinction between thp and normal pmds in that function, and always
using PAGE_SHIFT.
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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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 20f7e9f3726a
("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
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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>
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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>
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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>
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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>
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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>
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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>
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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
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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>
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If ACPI_GLUE_DEBUG is different from 0 (setting this requires a
manual change of glue.c), build breaks because of a leftover
reference to dev->acpi_handle in acpi_platform_notify(). Fix this
by using ACPI_HANDLE(dev) instead as appropriate.
[rjw: Subject and changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commit bf4d1b5ddb78f86078ac6ae0415802d5f0c68f92 (cpuidle: support
multiple drivers) changed the number of initialized state kobjects
in cpuidle_add_state_sysfs() from device->state_count to
drv->state_count, but left device->state_count in
cpuidle_remove_state_sysfs(). The values of these two fields may be
different, in which case a NULL pointer dereference may happen in
cpuidle_remove_state_sysfs(), for example. Fix this problem by making
cpuidle_add_state_sysfs() use device->state_count too (which restores
the original behavior of it).
[rjw: Changelog]
Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In commit 281dc5c5ec0f ("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>
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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>
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[ 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>
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Commit 1b963c81b145 ("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>
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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
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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>
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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.
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Add default pinctrl selection to atmel-ssc driver. The pinctrl
is mandatory.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
[nicolas.ferre@atmel.com: split dtsi and driver changes]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Add pinctrl support for SSC on AT91 dtsi files.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
[nicolas.ferre@atmel.com: split dtsi and driver changes]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reluctantly-acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Add names of the clock sources for the M-Audio Fast Track
C400.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Attain constant real-world latency by skipping 16 data packets.
The number of packets to be skipped was found by trial and error.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Taking another look at the C400 descriptors, I see now that there is
a clock selector (0x80) for this device.
Right now, the clock source points to the internal clock (0x81), which
is also valid. When the external clock source (0x82) is selected in the
mixer, and the rates mismatch (if it's free-running it is fixed to
48KHz), xruns will occur.
Set the clock ID to the clock selector unit (0x81), which then
allows the validation code to function correctly.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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A patch in the 3.2 kernel caused regression with hotplugging the
M-Audio Fast track pro, or sound after suspend. I don't have the
device so I haven't done a full analysis, but it seems userspace
(both udev and pulseaudio) got confused when a card was created,
immediately destroyed, and then created again.
However, at least one person in the bug report (martin djfun)
reports that this patch resolves the issue for him. It also leaves
a message in the log:
"snd-usb-audio: probe of 1-1.1:1.1 failed with error -5" which is
a bit misleading. It is better than non-working audio, but maybe
there's a more elegant solution?
BugLink: https://bugs.launchpad.net/bugs/1095315
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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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
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Commit 64c13330a389 ("iscsi-target: Fix bug in handling of ExpStatSN
ACK during u32 wrap-around") introduced a bug where we compare the
wrong SN against our ExpCmdSN.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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When transport_lookup_tmr_lun() fails and we return a task management
response from target_complete_tmr_failure(), we need to call
transport_cmd_check_stop_to_fabric() to release the last ref to the
cmd after calling se_tfo->queue_tm_rsp(), or else we will never remove
the failed TMR from the session command list (and we'll end up waiting
forever when trying to tear down the session).
(nab: Fix minor compile breakage)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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If a backend IO takes a really long then an initiator might abort a
command, and then when it gives up on the abort, send a LUN reset too,
all before we process any of the original command or the abort. (The
abort will wait for the backend IO to complete too)
When the backend IO final completes (or fails), the abort handling
will proceed and queue up a "return aborted status" operation. Then,
while that's still pending, the LUN reset might find the original
command still on the LUN's list of commands and try to return aborted
status again, which leads to a use-after free when the first
se_tfo->queue_status call frees the command and then the second
se_tfo->queue_status call runs.
Fix this by removing a command from the LUN state_list when we first
are about to queue aborted status; we shouldn't do anything
LUN-related after we've started returning status, so this seems like
the correct thing to do.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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This patch fixes a regression bug introduced during v3.6.x code with
the following commit to drop transport_add_cmd_to_queue(), which
originally re-set CMD_T_ACTIVE during pending WRITE I/O submission:
commit af8772926f019b7bddd7477b8de5f3b0f12bad21
Author: Christoph Hellwig <hch@infradead.org>
Date: Sun Jul 8 15:58:49 2012 -0400
target: replace the processing thread with a TMR work queue
The following sequence happens for write commands (or any other
commands with a data out phase):
- The transport calls target_submit_cmd(), which sets CMD_T_ACTIVE in
cmd->transport_state and sets cmd->t_state to TRANSPORT_NEW_CMD.
- Things go on transport_generic_new_cmd(), which notices that the
command needs to transfer data, so it sets cmd->t_state to
TRANSPORT_WRITE_PENDING and calls transport_cmd_check_stop().
- transport_cmd_check_stop() clears CMD_T_ACTIVE in cmd->transport_state
and returns in the normal case.
- Then we continue on to call ->se_tfo->write_pending().
- The data comes back from the initiator, and the transport calls
target_execute_cmd(), which sets cmd->t_state to TRANSPORT_PROCESSING
and calls into the backend to actually write the data.
At this point, the backend might take a long time to complete the
command, since it has to do real IO. If an abort request comes in for
this command at this point, it will not wait for the command to finish
since CMD_T_ACTIVE is not set. Then when the command does finally
finish, we blow up with use-after-free.
Avoid this by setting CMD_T_ACTIVE in target_execute_cmd() so that
transport_wait_for_tasks() waits for the command to finish executing.
This matches the behavior from before commit 1389533ef944 ("target:
remove transport_generic_handle_data"), when data was signaled via
transport_generic_handle_data(), which set CMD_T_ACTIVE because it
called transport_add_cmd_to_queue().
Signed-off-by: Roland Dreier <roland@purestorage.com>
Reported-by: Martin Svec <martin.svec@zoner.cz>
Cc: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Clear the target role when no target is provided for
the node performing a PRLI.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Reviewed-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Acked by Robert Love <robert.w.love@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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When generating a PRLI response to an initiator, clear the
FCP_SPPF_RETRY bit in the response.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Reviewed-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Acked by Robert Love <robert.w.love@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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The compiler complained about uninitialized variables, so
use TCM_NO_SENSE here.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Nicholas Bellinger <nab@risingtidesystems.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Introduce TCM_NO_SENSE, mapping to sense code
'Not ready, no additional sense information'.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Nicholas Bellinger <nab@risingtidesystems.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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The ASC/ASCQ code for 'Logical Unit Communication failure' is
0x08/0x00; 0x80/0x00 is vendor specific.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Nicholas Bellinger <nab@risingtidesystems.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
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
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