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For many drivers using the generic dmaengine PCM driver one of the few (or the
only) things left to do in the drivers remove function is to unregister the PCM
device. This patch adds a resource managed version of snd_dmaengine_pcm_register()
which makes it possible to simplify the remove function as well as the error
path in the probe function for those drivers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
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Corrected the MWAIT flag for C-State C6 on Intel Avoton/Rangeley processors.
Signed-off-by: Arne Bockholdt <linux-kernel@bockholdt.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In case of error, the function __clk_lookup() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
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clk_round_rate() can be used by drivers to determine whether or not a
frequency is supported by the clock. The current Tegra clock driver
outputs an error message and a stacktrace when the requested rate isn't
supported. That's fine for clk_set_rate(), but it's confusing when all
the driver does is query whether or not a frequency is supported.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Reduce the eDP detection to just checking if it's port A, or if
the VBT tells us that the port is eDP for the other ports.
Suggested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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VLV can have eDP on either port B or C, or even both. Based on the
VBT spec, intel_dpd_is_edp() should work on VLV too, assuming we
check the correct ports.
So instead of hardcoding port D, rename the function to
intel_dp_is_edp() and pass the port as a parameter, and use it
on VLV ports B and C.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71051
Tested-by: Robert Hooker <robert.hooker@canonical.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Wrestle the patch to apply and compile properly.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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'spi/fix/mpc512x-psc', 'spi/fix/mxs', 'spi/fix/pxa2xx', 'spi/fix/qspi', 'spi/fix/rspi' and 'spi/fix/txx9' into spi-linus
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The Intel LPSS SPI private register bits have to be restored
when system resume from S3 suspend.
Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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This both devices need limit for internal dmic.
[cosmetic change; renamed fixup name by tiwai]
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The current generic parser assumes blindly that the volume and mute
amps are found in the aamix node itself. But on some codecs,
typically Analog Devices ones, the aamix amps are separately
implemented in each leaf node of the aamix node, and the current
driver can't establish the correct amp controls. This is a regression
compared with the previous static quirks.
This patch extends the search for the amps to the leaf nodes for
allowing the aamix controls again on such codecs.
In this implementation, I didn't code to loop through the whole paths,
since usually one depth should suffice, and we can't search too
deeply, as it may result in the conflicting control assignments.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=65641
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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In order to find I2C devices in the device tree, the platform nodes
have to be known by the I2C core. This requires setting the
dev.of_node parameter of the adapter.
Signed-off-by: Florian Meier <florian.meier@koalo.de>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Plane information should be initialized when halted.
It may restart from the wrong plane without this patch.
Reviewed-by: Max Filippov <max.filippov@cogentembedded.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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The device busy check method is different between
single and double planes.
It will always return "busy" without this patch
if channel used as double plane.
Reviewed-by: Max Filippov <max.filippov@cogentembedded.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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shdma_chan_probe() can set max transfer size,
but it will be PAGE_SIZE with out this patch.
Reviewed-by: Max Filippov <max.filippov@cogentembedded.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Add missing platform_set_drvdata() in mmp_pdma_probe(), otherwise
calling platform_get_drvdata() in mmp_pdma_remove() returns NULL.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Use the recently introduced DMA_COMPLETE instead of DMA_SUCCESS.
Without this patch we get the following build error:
drivers/dma/s3c24xx-dma.c: In function ‘s3c24xx_dma_tx_status’:
drivers/dma/s3c24xx-dma.c:798:13: error: ‘DMA_SUCCESS’ undeclared
(first use in this function)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Kukjin Kim <kgene@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Pull drm fixes from Dave Airlie:
"Just two minor fixes as people keep resending since they are so low
hanging"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau/hwmon: fix compilation without CONFIG_HWMON
drm/sysfs: fix OOM verification
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some tty/serial driver fixes for reported issues in 3.13-rc2.
The n_gsm "fix" was reverted as it was found to not be correct.
Hopefully this will be resolved in a future pull request, but as
there's really only one user of this line setting, it's not a big
deal..."
* tag 'tty-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "n_gsm: race between ld close and gsmtty open"
n_tty: Protect minimum_to_wake reset for concurrent readers
tty: Reset hupped state on open
TTY: amiserial, add missing platform check
TTY: pmac_zilog, check existence of ports in pmz_console_init()
n_gsm: race between ld close and gsmtty open
tty/serial/8250: fix typo in help text
n_tty: Fix 4096-byte canonical reads
n_tty: Fix echo overrun tail computation
n_tty: Ensure reader restarts worker for next reader
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg KH:
"Here are a number of staging, and IIO driver, fixes for 3.13-rc2 that
resolve issues that have been reported for 3.13-rc1. All of these
have been in linux-next for a bit this week"
* tag 'staging-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (25 commits)
Staging: tidspbridge: disable driver
staging: zsmalloc: Ensure handle is never 0 on success
staging/lustre/ptlrpc: fix ptlrpc_stop_pinger logic
staging: r8188eu: Fix AP mode
Staging: btmtk_usb: Add hdev parameter to hdev->send driver callback
Staging: go7007: fix up some remaining go->dev issues
staging: imx-drm: Fix modular build of DRM_IMX_IPUV3
staging: ft1000: fix use of potentially uninitialized variable
Revert "staging:media: Use dev_dbg() instead of pr_debug()"
Staging: zram: Fix memory leak by refcount mismatch
staging: vt6656: [BUG] Fix for TX USB resets from vendors driver.
staging: nvec: potential NULL dereference on error path
Staging: vt6655-6: potential NULL dereference in hostap_disable_hostapd()
staging: comedi: s626: fix value written by s626_set_dac()
Staging: comedi: pcl730: fix some bitwise vs logical AND bugs
staging: comedi: fix potentially uninitialised variable
iio:accel:kxsd9 fix missing mutex unlock
iio: adc: ti_am335x_adc: avoid double free of buffer.
staging:iio: Fix hmc5843 Kconfig dependencies
iio: Fix tcs3472 Kconfig dependencies
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are 3 patches for sysfs issues that have been reported. Well, 1
patch really, the first one is reverted as it's not really needed (the
correct fix is coming in through the different driver subsystems
instead)
But that 1 sysfs fix is needed, so this is still a good thing to pull
in now"
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tag 'driver-core-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Revert "sysfs: handle duplicate removal attempts in sysfs_remove_group()"
sysfs: use a separate locking class for open files depending on mmap
sysfs: handle duplicate removal attempts in sysfs_remove_group()
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- fix compat ioctl leak in uhid, by David Herrmann
- fix scheduling in atomic context (causing actual lockups in real
world) in hid-sony driver, by Sven Eckelmann
- revert patch introducing VID/PID conflict, by Jiri Kosina
- support from various new device IDs by Benjamin Tissoires and
KaiChung Cheng
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: uhid: fix leak for 64/32 UHID_CREATE
HID: kye: fix unresponsive keyboard
HID: kye: Add report fixup for Genius Manticore Keyboard
HID: multicouh: add PID VID to support 1 new Wistron optical touch device
HID: appleir: force input to be set
Revert "HID: wiimote: add LEGO-wiimote VID"
HID: sony: Send FF commands in non-atomic context
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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:
- Fix for a recent regression in the Tegra cpufreq driver causing
excess error messages to be printed from Stephen Warren
- ACPI-based device hotplug fix to prevent conflicting notify handlers
from being installed for PCI host bridge objects. From Toshi Kani
- ACPICA update to upstream version 20131115. This contains bug fixes
mostly (loop termination fix for the get AML length function, fixes
related to namespace node removal and debug output). From Bob Moore,
Tomasz Nowicki and Lv Zheng
- Removal of incorrect inclusions of internal ACPICA header files by
non-ACPICA code from Lv Zheng
- Fixes for the ACPI sysfs interface exposing tables to user space from
Daisuke Hatayama and Jeremy Compostella
- Assorted ACPI and cpufreq cleanups from Sachin Kamat and Al Stone
- cpupower tool fix and man page from Thomas Renninger
* tag 'pm+acpi-3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: Clean up incorrect inclusions of ACPICA headers
tools: cpupower: fix wrong err msg not supported vs not available
tools: cpupower: Add cpupower-idle-set(1) manpage
ACPI / sysfs: Fix incorrect ACPI tables walk in acpi_tables_sysfs_init()
ACPI / sysfs: Set file size for each exposed ACPI table
ACPICA: Update version to 20131115.
ACPICA: Add support to delete all objects attached to the root namespace node.
ACPICA: Delete all attached data objects during namespace node deletion.
ACPICA: Resources: Fix loop termination for the get AML length function.
ACPICA: Tests: Add CHECKSUM_ABORT protection for test utilities.
ACPICA: Debug output: Do not emit function nesting level for kernel build.
ACPI / sleep: clean up compiler warning about uninitialized field
cpufreq: exynos: Remove unwanted EXPORT_SYMBOL
cpufreq: tegra: don't error target() when suspended
ACPI / hotplug: Fix conflicted PCI bridge notify handlers
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Since commit 7a6354e241d8 ("sched: Move wait.c into kernel/sched/"), the
path of this file has changed.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Andy Whitcroft <apw@canonical.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Reported-by: Jim Davis <jim.epost@gmail.com>
Tested-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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arch_mutex_cpu_relax is already conditionally defined in mutex.h, so
simply include that header rather than replicate the code here.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Copy/Paste typo.. we need to test for ->kdev instead of ->dev.
Reported-by: Juha Leppänen <juha_efku@dnainternet.net>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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This tool hasn't been maintained in over a decade, and is pretty much
useless these days. Let's pretend it never happened.
Also remove a long-dead email address.
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Ben Herrenschmidt:
"The main thing that caused problem was that CONFIG_CPU_LITTLE_ENDIAN
got turned on with allyesconfig and such, which is not a very good
idea especially since it requires a newer toolchain than what most
people have.
So we turned it into a choice instead that defaults to big endian"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/windfarm: Fix XServe G5 fan control Makefile issue
arch/powerpc/kernel: Use %12.12s instead of %12s to avoid memory overflow
powerpc/signals: Improved mark VSX not saved with small contexts fix
powerpc/kdump: Adding symbols in vmcoreinfo to facilitate dump filtering
powerpc: allyesconfig should not select CONFIG_CPU_LITTLE_ENDIAN
powerpc: Fix error when cross building TAGS & cscope
powerpc/booke: Only check for hugetlb in flush if vma != NULL
powerpc/85xx: typo in dts: "interupt" (four devices)
powerpc/8xx: mfspr SPRN_TBRx in lieu of mftb/mftbu is not supported
powerpc/corenet64: compile with CONFIG_E{5,6}500_CPU well
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip into for-linus
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commit 566c09c53455d7c4f1 raid5: relieve lock contention in get_active_stripe()
modified the locking in get_active_stripe() reducing the range
protected by the (highly contended) device_lock.
Unfortunately it reduced the range too much opening up some races.
One race can occur if get_priority_stripe runs between the
test on sh->count and device_lock being taken.
This will mean that sh->lru is not empty while get_active_stripe
thinks ->count is zero resulting in a 'BUG' firing.
Another race happens if __release_stripe is called immediately
after sh->count is tested and found to be non-zero. If STRIPE_HANDLE
is not set, get_active_stripe should increment ->active_stripes
when it increments ->count from 0, but as it didn't think it was 0,
it doesn't.
Extending device_lock to cover the test on sh->count close these
races.
While we are here, fix the two BUG tests:
-If count is zero, then lru really must not be empty, or we've
lock the stripe_head somehow - no other tests are relevant.
-STRIPE_ON_RELEASE_LIST is completely independent of ->lru so
testing it is pointless.
Reported-and-tested-by: Brassow Jonathan <jbrassow@redhat.com>
Reviewed-by: Shaohua Li <shli@kernel.org>
Fixes: 566c09c53455d7c4f1
Signed-off-by: NeilBrown <neilb@suse.de>
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commit 7a0a5355cbc71efa md: Don't test all of mddev->flags at once.
made most tests on mddev->flags safer, but missed one.
When
commit 260fa034ef7a4ff8b7306 md: avoid deadlock when dirty buffers during md_stop.
added MD_STILL_CLOSED, this caused md_check_recovery to misbehave.
It can think there is something to do but find nothing. This can
lead to the md thread spinning during array shutdown.
https://bugzilla.kernel.org/show_bug.cgi?id=65721
Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Fixes: 260fa034ef7a4ff8b7306
Cc: stable@vger.kernel.org (3.12)
Signed-off-by: NeilBrown <neilb@suse.de>
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In alloc_thread_groups, worker_groups is a pointer to an array,
not an array of pointers.
So
worker_groups[i]
is wrong. It should be
&(*worker_groups)[i]
Found-by: coverity
Fixes: 60aaf9338545
Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Cc: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-linus
Chanwoo writes:
Update extcon for 3.13-rc2
This patchset fix NULL pointer error of extcon-arizona driver and fix issue
about memory of device groups when calling extcon_dev_unregister function.
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If a cgroup file implements either read_map() or read_seq_string(),
such file is served using seq_file by overriding file->f_op to
cgroup_seqfile_operations, which also overrides the release method to
single_release() from cgroup_file_release().
Because cgroup_file_open() didn't use to acquire any resources, this
used to be fine, but since f7d58818ba42 ("cgroup: pin
cgroup_subsys_state when opening a cgroupfs file"), cgroup_file_open()
pins the css (cgroup_subsys_state) which is put by
cgroup_file_release(). The patch forgot to update the release path
for seq_files and each open/release cycle leaks a css reference.
Fix it by updating cgroup_file_release() to also handle seq_files and
using it for seq_file release path too.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org # v3.12
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This adds me as maintainer for the HSI subsystem and
Carlos Chinea (original author) to the CREDITS file.
Signed-off-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This value is more correct, and matches what we read out in the fastboot
code. Without this, the watermark code will panic after the first mode
setting activity after a fastboot.
v2: fix up HSW ->clock usage too (Ville)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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MIC card and host drivers are able to use virtio over the PCIe bus by
treating ioremap return values for the prefetchable BARs as pointers,
effectively treating I/O memory the same as system memory. However this
results in sparse warnings. Knowing that these warnings do not point to
a functional issue, this patch suppresses these warnings.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Endianness issues are now consistent as per the documentation in
host/mic_virtio.h. Sparse warnings related to endianness are also fixed.
Note that the MIC driver implementation assumes that the host can be
both BE or LE whereas the card is always LE.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Avoid declaring ALIGN() and __aligned() in
include/uapi/linux/mic_common.h since they pollute user space
namespace. Also, mic_aligned_size() can be simply replaced simply by
sizeof() since all structures where mic_aligned_size() is used are
declared using __attribute__ ((aligned(8)));
--
>From mail from H Peter Anvin about this:
On Fri, Nov 08, 2013 H Peter Anvin <h.peter.anvin@intel.com> wrote:
Subject: Namespace pollution in mic_common.h
This puts two macros, ALIGN() and __aligned(), into arbitrary user space
namespace. This really isn't safe or acceptable, especially since those
symbols are highly generic.
...
When these structures are forced-aligned, they will in fact have padding
automatically added by the compiler to an 8-byte boundary anyway, so
mic_aligned_size() does nothing.
...
Reported-by: H Peter Anvin <h.peter.anvin@intel.com>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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MIC user space daemon poll's on sysfs changes. The documentation for
sysfs_poll(...) in fs/sysfs/file.c states that "Once poll/select
indicates that the value has changed, you need to close and re-open the
file, or seek to 0 and read again". This step was missed out earlier and
resulted in the daemon spinning continuously rather than getting blocked
in 'poll'. This bug was exposed by commit aea585ef8fa65163 introduced as
part of sysfs changes in 3.13-rc1. A seek to 0 has been introduced to
fix it.
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The bug would result in incorrect 'retry' value being printed in debug
statements as well as dead code in mic_find_vqs(...) in
drivers/misc/mic/card/mic_virtio.c.
Reported-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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virtqueue_{kick()/notify()} methods are required to return bool due to
API changes introduced in commit 5b1bf7cb673a.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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After commit bcdde7e221a8 (sysfs: make __sysfs_remove_dir() recursive)
Mika Westerberg sees traces analogous to the one below in Thunderbolt
hot-remove testing:
WARNING: CPU: 0 PID: 4 at fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
sysfs group ffffffff81c6f1e0 not found for kobject 'host7'
Modules linked in:
CPU: 0 PID: 4 Comm: kworker/0:0 Not tainted 3.12.0+ #13
Hardware name: /D33217CK, BIOS GKPPT10H.86A.0042.2013.0422.1439 04/22/2013
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
0000000000000009 ffff8801002459b0 ffffffff817daab1 ffff8801002459f8
ffff8801002459e8 ffffffff810436b8 0000000000000000 ffffffff81c6f1e0
ffff88006d440358 ffff88006d440188 ffff88006e8b4c28 ffff880100245a48
Call Trace:
[<ffffffff817daab1>] dump_stack+0x45/0x56
[<ffffffff810436b8>] warn_slowpath_common+0x78/0xa0
[<ffffffff81043727>] warn_slowpath_fmt+0x47/0x50
[<ffffffff811ad319>] ? sysfs_get_dirent_ns+0x49/0x70
[<ffffffff811ae526>] sysfs_remove_group+0xc6/0xd0
[<ffffffff81432f7e>] dpm_sysfs_remove+0x3e/0x50
[<ffffffff8142a0d0>] device_del+0x40/0x1b0
[<ffffffff8142a24d>] device_unregister+0xd/0x20
[<ffffffff8144131a>] scsi_remove_host+0xba/0x110
[<ffffffff8145f526>] ata_host_detach+0xc6/0x100
[<ffffffff8145f578>] ata_pci_remove_one+0x18/0x20
[<ffffffff812e8f48>] pci_device_remove+0x28/0x60
[<ffffffff8142d854>] __device_release_driver+0x64/0xd0
[<ffffffff8142d8de>] device_release_driver+0x1e/0x30
[<ffffffff8142d257>] bus_remove_device+0xf7/0x140
[<ffffffff8142a1b1>] device_del+0x121/0x1b0
[<ffffffff812e43d4>] pci_stop_bus_device+0x94/0xa0
[<ffffffff812e437b>] pci_stop_bus_device+0x3b/0xa0
[<ffffffff812e437b>] pci_stop_bus_device+0x3b/0xa0
[<ffffffff812e44dd>] pci_stop_and_remove_bus_device+0xd/0x20
[<ffffffff812fc743>] trim_stale_devices+0x73/0xe0
[<ffffffff812fc78b>] trim_stale_devices+0xbb/0xe0
[<ffffffff812fc78b>] trim_stale_devices+0xbb/0xe0
[<ffffffff812fcb6e>] acpiphp_check_bridge+0x7e/0xd0
[<ffffffff812fd90d>] hotplug_event+0xcd/0x160
[<ffffffff812fd9c5>] hotplug_event_work+0x25/0x60
[<ffffffff81316749>] acpi_hotplug_work_fn+0x17/0x22
[<ffffffff8105cf3a>] process_one_work+0x17a/0x430
[<ffffffff8105db29>] worker_thread+0x119/0x390
[<ffffffff8105da10>] ? manage_workers.isra.25+0x2a0/0x2a0
[<ffffffff81063a5d>] kthread+0xcd/0xf0
[<ffffffff81063990>] ? kthread_create_on_node+0x180/0x180
[<ffffffff817eb33c>] ret_from_fork+0x7c/0xb0
[<ffffffff81063990>] ? kthread_create_on_node+0x180/0x180
The source of this problem is that SCSI hosts are removed from
ATA ports after calling ata_tport_delete() which removes the
port's sysfs directory, among other things. Now, after commit
bcdde7e221a8, the sysfs directory is removed along with all of
its subdirectories that include the SCSI host's sysfs directory
and its subdirectories at this point. Consequently, when
device_del() is finally called for any child device of the SCSI
host and tries to remove its "power" group (which is already
gone then), it triggers the above warning.
To make the warnings go away, change the removal ordering in
ata_port_detach() so that the SCSI host is removed from the
port before ata_tport_delete() is called.
References: https://bugzilla.kernel.org/show_bug.cgi?id=65281
Reported-and-tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Juri hit the below lockdep report:
[ 4.303391] ======================================================
[ 4.303392] [ INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected ]
[ 4.303394] 3.12.0-dl-peterz+ #144 Not tainted
[ 4.303395] ------------------------------------------------------
[ 4.303397] kworker/u4:3/689 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[ 4.303399] (&p->mems_allowed_seq){+.+...}, at: [<ffffffff8114e63c>] new_slab+0x6c/0x290
[ 4.303417]
[ 4.303417] and this task is already holding:
[ 4.303418] (&(&q->__queue_lock)->rlock){..-...}, at: [<ffffffff812d2dfb>] blk_execute_rq_nowait+0x5b/0x100
[ 4.303431] which would create a new lock dependency:
[ 4.303432] (&(&q->__queue_lock)->rlock){..-...} -> (&p->mems_allowed_seq){+.+...}
[ 4.303436]
[ 4.303898] the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock:
[ 4.303918] -> (&p->mems_allowed_seq){+.+...} ops: 2762 {
[ 4.303922] HARDIRQ-ON-W at:
[ 4.303923] [<ffffffff8108ab9a>] __lock_acquire+0x65a/0x1ff0
[ 4.303926] [<ffffffff8108cbe3>] lock_acquire+0x93/0x140
[ 4.303929] [<ffffffff81063dd6>] kthreadd+0x86/0x180
[ 4.303931] [<ffffffff816ded6c>] ret_from_fork+0x7c/0xb0
[ 4.303933] SOFTIRQ-ON-W at:
[ 4.303933] [<ffffffff8108abcc>] __lock_acquire+0x68c/0x1ff0
[ 4.303935] [<ffffffff8108cbe3>] lock_acquire+0x93/0x140
[ 4.303940] [<ffffffff81063dd6>] kthreadd+0x86/0x180
[ 4.303955] [<ffffffff816ded6c>] ret_from_fork+0x7c/0xb0
[ 4.303959] INITIAL USE at:
[ 4.303960] [<ffffffff8108a884>] __lock_acquire+0x344/0x1ff0
[ 4.303963] [<ffffffff8108cbe3>] lock_acquire+0x93/0x140
[ 4.303966] [<ffffffff81063dd6>] kthreadd+0x86/0x180
[ 4.303969] [<ffffffff816ded6c>] ret_from_fork+0x7c/0xb0
[ 4.303972] }
Which reports that we take mems_allowed_seq with interrupts enabled. A
little digging found that this can only be from
cpuset_change_task_nodemask().
This is an actual deadlock because an interrupt doing an allocation will
hit get_mems_allowed()->...->__read_seqcount_begin(), which will spin
forever waiting for the write side to complete.
Cc: John Stultz <john.stultz@linaro.org>
Cc: Mel Gorman <mgorman@suse.de>
Reported-by: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Tested-by: Juri Lelli <juri.lelli@gmail.com>
Acked-by: Li Zefan <lizefan@huawei.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
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All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.
Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v3.13-rc2
First set of fixes for this -rc cycle. A few important
fixes which should be backported to stable kernels and
the usual set of sparse warning fixes. There's also a
regression fix on phy-generic.c which would prevent
am335x-based platforms from having their PHY drivers
probed.
Signed-of-by: Felipe Balbi <balbi@ti.com>
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This reverts commit 54d71145a4548330313ca664a4a009772fe8b7dd.
The root cause of these "inverted" sysfs removals have now been found,
so there is no need for this patch. Keep this functionality around so
that this type of error doesn't show up in driver code again.
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There seems to be no active maintainer for the driver, and there is an
unfixed security bug, so disable the driver for now.
Hopefully someone steps up to be the maintainer, and works to get this
out of staging, otherwise it will be deleted soon.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Omar Ramirez Luna <omar.ramirez@copitl.com>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Kanigeri, Hari <h-kanigeri2@ti.com>
Cc: Ameya Palande <ameya.palande@nokia.com>
Cc: Guzman Lugo, Fernando <fernando.lugo@ti.com>
Cc: Hebbar, Shivananda <x0hebbar@ti.com>
Cc: Ramos Falcon, Ernesto <ernesto@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Anna, Suman <s-anna@ti.com>
Cc: Gupta, Ramesh <grgupta@ti.com>
Cc: Gomez Castellanos, Ivan <ivan.gomez@ti.com>
Cc: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Cc: Armando Uribe De Leon <x0095078@ti.com>
Cc: Deepak Chitriki <deepak.chitriki@ti.com>
Cc: Menon, Nishanth <nm@ti.com>
Cc: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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