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Commit ff1f0018cf66080d8e6f59791e552615648a033a ("drivers: Enable
building of Kirkwood drivers for mach-mvebu") added Kirkwood into
mach-mvebu, adding MACH_KIRKWOOD to ARCH_KIRKWOOD in the KConfig files.
The change for ARM_KIRKWOOD_CPUFREQ replaced ARCH_KIRKWOOD with
MACH_KIRKWOOD, whereas all the other changes were ARCH_KIRKWOOD ||
MACH_KIRKWOOD.
As a consequence of this change, the cpufreq driver is no longer enabled
for ARCH_KIRKWOOD. This patch reinstates ARM_KIRKWOOD_CPUFREQ for
ARCH_KIRKWOOD.
Signed-off-by: Quentin Armitage <quentin@armitage.org.uk>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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PM_OPP is a library used by several of the existing cpufreq drivers.
ARM IMX6Q cpufreq driver uses this library for its functionality.
Thus, it should be selected in Kconfig.
Reported-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Nicolas Del Piano <ndel314@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The Compaq iPAQ h3600 also has the K4S281632b-1H memory type.
Verified by prying apart a broken board.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.linaro.org/people/mike.turquette/linux
Pull clock driver fixes from Mike Turquette:
"This batch of fixes is for a handful of clock drivers from Allwinner,
Samsung, ST & TI. Most of them are of the "this hardware won't work
without this fix" variety, including patches that fix platforms that
did not boot under certain configurations. Other fixes are the result
of changes to the clock core introduced in 3.15 that had subtle
impacts on the clock drivers.
There are no fixes to the clock framework core in this pull request"
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
clk: spear3xx: Set proper clock parent of uart1/2
clk: spear3xx: Use proper control register offset
clk: qcom: HDMI source sel is 3 not 2
clk: sunxi: fix devm_ioremap_resource error detection code
clk: s2mps11: Fix double free corruption during driver unbind
clk: ti: am43x: Fix boot with CONFIG_SOC_AM33XX disabled
clk: exynos5420: Remove aclk66_peric from the clock tree description
clk/exynos5250: fix bit number for tv sysmmu clock
clk: s3c64xx: Hookup SPI clocks correctly
clk: samsung: exynos4: Remove SRC_MASK_ISP gates
clk: samsung: add more aliases for s3c24xx
clk: samsung: fix several typos to fix boot on s3c2410
clk: ti: set CLK_SET_RATE_NO_REPARENT for ti,mux-clock
clk: ti: am43x: Fix boot with CONFIG_SOC_AM33XX disabled
clk: ti: dra7: return error code in failure case
clk: ti: apll: not allocating enough data
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"This week's arm-soc fixes:
- Another set of OMAP fixes
* Clock fixes
* Restart handling
* PHY regulators
* SATA hwmod data for DRA7
+ Some trivial fixes and removal of a bit of dead code
- Exynos fixes
* A bunch of clock fixes
* Some SMP fixes
* Exynos multi-core timer: register as clocksource and fix ftrace.
+ a few other minor fixes
There's also a couple more patches, and at91 fix for USB caused by
common clock conversion, and more MAINTAINERS entries for shmobile.
We're definitely switching to only regression fixes from here on out,
we've been a little less strict than usual up until now"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (26 commits)
ARM: at91: at91sam9x5: add clocks for usb device
ARM: EXYNOS: Register cpuidle device only on exynos4210 and 5250
ARM: dts: Add clock property for mfc_pd in exynos5420
clk: exynos5420: Add IDs for clocks used in PD mfc
ARM: EXYNOS: Add support for clock handling in power domain
ARM: OMAP2+: Remove non working OMAP HDMI audio initialization
ARM: imx: fix shared gate clock
ARM: dts: Update the parent for Audss clocks in Exynos5420
ARM: EXYNOS: Update secondary boot addr for secure mode
ARM: dts: Fix TI CPSW Phy mode selection on IGEP COM AQUILA.
ARM: dts: am335x-evmsk: Enable the McASP FIFO for audio
ARM: dts: am335x-evm: Enable the McASP FIFO for audio
ARM: OMAP2+: Make GPMC skip disabled devices
ARM: OMAP2+: create dsp device only on OMAP3 SoCs
ARM: dts: dra7-evm: Make VDDA_1V8_PHY supply always on
ARM: DRA7/AM43XX: fix header definition for omap44xx_restart
ARM: OMAP2+: clock/dpll: fix _dpll_test_fint arithmetics overflow
ARM: DRA7: hwmod: Add SYSCONFIG for usb_otg_ss
ARM: DRA7: hwmod: Fixup SATA hwmod
ARM: OMAP3: PRM/CM: Add back macros used by TI DSP/Bridge driver
...
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The uarts only work when the parent is ras_ahb_clk. The stale 3.5
based ST tree does this in the board file.
Add it to the clk init function. Not pretty, but the mess there is
amazing anyway.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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The control register is at offset 0x10, not 0x0. This is wreckaged
since commit 5df33a62c (SPEAr: Switch to common clock framework).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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Pull slave-dmaengine fixes from Vinod Koul:
"We have two small fixes. First one from Daniel to handle 0-length
packets for usb cppi dma. Second by Russell for imx-sdam cyclic
residue reporting"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
Update imx-sdma cyclic handling to report residue
dma: cppi41: handle 0-length packets
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
Merge "Samsung fixes-3 for 3.16" from Kukjin Kim:
Samsung fixes-3 for v3.16
- update the parent for Auudss clock because kernel will be hang
during late boot if the parent clock is disabled in bootloader.
- enable clk handing in power domain because while power domain
on/off, its regarding clock source will be reset and it causes
a problem so need to handle it.
- add mux clocks to be used by power domain for exynos5420-mfc
during power domain on/off and property in device tree also.
- register cpuidle only for exynos4210 and exynos5250 because a
system failure will be happened on other exynos SoCs.
* tag 'samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Register cpuidle device only on exynos4210 and 5250
ARM: dts: Add clock property for mfc_pd in exynos5420
clk: exynos5420: Add IDs for clocks used in PD mfc
ARM: EXYNOS: Add support for clock handling in power domain
ARM: dts: Update the parent for Audss clocks in Exynos5420
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes, PHY driver fixes (they ended up in this
tree for lack of somewhere else to put them), and some new USB device
ids"
* tag 'usb-3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
phy: omap-usb2: Balance pm_runtime_enable() on probe failure and remove
phy: core: Fix error path in phy_create()
drivers: phy: phy-samsung-usb2.c: Add missing MODULE_DEVICE_TABLE
phy: omap-usb2: fix devm_ioremap_resource error detection code
phy: sun4i: depend on RESET_CONTROLLER
USB: serial: ftdi_sio: Add Infineon Triboard
USB: ftdi_sio: Add extra PID.
usb: option: Add ID for Telewell TW-LTE 4G v2
USB: cp210x: add support for Corsair usb dongle
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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 small serial fixes that resolve some reported problems
that started in 3.15 with some serial drivers.
And there's a new dt binding for a serial driver, which was all that
was needed for the renesas serial driver"
* tag 'tty-3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: sh-sci: Add device tree support for r8a7{778,740,3a4} and sh73a0
serial: imx: Fix build breakage
serial: arc_uart: Use uart_circ_empty() for open-coded comparison
serial: Test for no tx data on tx restart
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are two hyperv driver fixes, and one i8k driver fix for 3.16"
* tag 'char-misc-3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
i8k: Fix non-SMP operation
Drivers: hv: util: Fix a bug in the KVP code
Drivers: hv: vmbus: Fix a bug in the channel callback dispatch code
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull IIO fixes from Greg KH:
"Here are some IIO driver fixes for 3.16-rc5. Nothing major, just
resolves some minor issues that have been reported"
* tag 'staging-3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends
iio:tcs3472: Check for buffer enabled and locking
iio: hid-sensor-prox: Fix return values
iio: hid-sensor-gyro-3d: Fix return values
iio: hid-sensor-als: Fix return values
iio: hid-sensor-magn-3d: Fix return values
iio: hid-sensor-accel-3d: Fix return values
iio: hid-sensor-press: Fix return values
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If probe fails then we need to call pm_runtime_disable() to balance
out the previous pm_runtime_enable() call. Else it will cause
unbalanced pm_runtime_enable() call in the succeding probe call.
This anomaly was observed when the call to devm_phy_create() failed
with -EPROBE_DEFER.
Balance out the pm_runtime_enable() call in .remove() as well.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Prevent resources from being freed twice in case device_add() call
fails within phy_create(). Also use ida_simple_remove() instead of
ida_remove() as we had used ida_simple_get() to allocate the ida.
Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Allow phy-exynos-usb2 to be autoloaded based on devicetree information.
Tested on Odroid X2 with its USB subsystem build as modules.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure.
A simplified version of the semantic match that finds this problem is as
follows:
// <smpl>
@@
expression e,e1;
statement S;
@@
*e = devm_ioremap_resource(...);
if (!e1) S
// </smpl>
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The driver depend on the reset framework in a mandatory way. Make sure
reset_control_get is defined by adding this dependency in Kconfig
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This adds support for Infineon TriBoard TC1798 [1]. Only interface 1
is used as serial line (see [2], Figure 8-6).
[1] http://www.infineon.com/cms/de/product/microcontroller/development-tools-software-and-kits/tricore-tm-development-tools-software-and-kits/starterkits-and-evaluation-boards/starter-kit-tc1798/channel.html?channel=db3a304333b8a7ca0133cfa3d73e4268
[2] http://www.infineon.com/dgdl/TriBoardManual-TC1798-V10.pdf?folderId=db3a304412b407950112b409ae7c0343&fileId=db3a304333b8a7ca0133cfae99fe426a
Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix breakage introduced by
commit c557d392fbf5badd693ea1946a4317c87a26a716,
'serial: Test for no tx data on tx restart'.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix DM multipath IO hang regression from 3.15 due to logic bug in
multipath_busy. This impacted cable-pull testing and also the
ability to boot with IPR SCSI on a POWER8 box.
- Fix possible deadlock with deferred device removal by using a new
dedicated workqueue rather than using the system workqueue.
- Fix NULL pointer crash due to race condition in dm-io's wake up code
for sync_io by using a completion.
- Update dm-crypt and dm-zero author name following legal name change;
this is important to Jana so I didn't see any reason to hold it back.
* tag 'dm-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm mpath: fix IO hang due to logic bug in multipath_busy
dm io: fix a race condition in the wake up code for sync_io
dm crypt, dm zero: update author name following legal name change
dm: allocate a special workqueue for deferred device removal
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Pull drm fixes from Dave Airlie:
"Nothing too scary, we have one outstanding i915 regression but Daniel
has promised the fix as soon as he's finished testing it a bit.
Fixes for the main x86 drivers:
- radeon: dpm fixes, displayport regression fix
- i915: quirks for backlight regression, edp reboot fix, valleyview
black screen fixes
- nouveau: display port regression fixes, fix for memory reclocking"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon/dpm: Reenabling SS on Cayman
drm/radeon: fix typo in ci_stop_dpm()
drm/radeon: fix typo in golden register setup on evergreen
drm/radeon: only print meaningful VM faults
drm/radeon/dp: return -EIO for flags not zero case
drm/i915/vlv: T12 eDP panel timing enforcement during reboot
drm/i915: Only unbind vgacon, not other console drivers
drm/i915: Don't clobber the GTT when it's within stolen memory
drm/i915/vlv: Update the DSI ULPS entry/exit sequence
drm/i915/vlv: DPI FIFO empty check is not needed
drm/i915: Toshiba CB35 has a controllable backlight
drm/i915: Acer C720 and C720P have controllable backlights
drm/i915: quirk asserts controllable backlight presence, overriding VBT
drm/nouveau/ram: fix test for gpio presence
drm/nouveau/dp: workaround broken display
drm/nouveau/dp: fix required link bandwidth calculations
drm/nouveau/kms: restore fbcon after display has been resumed
drm/nv50-/kms: pass a non-zero value for head to sor dpms methods
drm/nouveau/fb: Prevent inlining of ramfuc_reg
drm/gk104/ram: bash mpll bit 31 on
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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:
"These are a few regression fixes for ACPI device enumeration and
resources management, intel_pstate and cpufreq, a revert of an ACPI
commit removing user space interfaces in /proc that we incorrectly
thought were not used any more, fixes for some long-standing
concurrency issues in the ACPI EC driver, two ACPI battery driver
fixes, stable-candidate fixes for intel_pstate, an ACPI-related fix
for i915 and two new ACPI video blacklist entries for Win8-oriented
BIOSes.
Specifics:
- Missing device ID for ACPI enumeration of PNP devices that we
overlooked during the recent rework of that code from Zhang Rui.
- Fix for a problem introduced during the 3.14 cycle in the ACPI
device resources management code and causing it to reject all
resources of length 0 although some of them are actually valid
which affects serial ports detection on a number of systems. From
Andy Whitcroft.
- intel_pstate fix for a boot problem on some BayTrail-based systems
introduced by a previous fix related to that platform during the
3.13 cycle from Dirk Brandewie.
- Revert of a 3.13 commit that removed the ACPI AC /proc interface
which turns out to be still needed by some old utilities
(kpowersave from kde 3.5.10 in particular) from Lan Tianyu.
- cpufreq build fix for the davinci ARM platform from Prabhakar Lad
(the breakage was introduced during the 3.10 cycle).
- ACPI-related i915 fix preventing firmware on some Thinkpad laptops
from setting backlight levels incorrectly during AC plug/unplug.
From Aaron Lu.
- Fixes for two nasty race conditions in the ACPI embedded controller
driver that may be responsible for a number of past bug reports
related to the EC from Lv Zhang and a fix for two memory leaks in
error code paths in that driver from Colin Ian King.
- Fixes for a couple of corner-case issues in the intel_pstate driver
(all candidates for -stable) from Dirk Brandewie and Vincent Minet.
- Fixes for two corner-case issues in the ACPI battery driver from
Josef Gajdusek and Lan Tianyu.
- Two new ACPI video blacklist entries for Acer TravelMate B113 and
Dell Inspiron 5737 from Edward Lin and Martin Kepplinger"
* tag 'pm+acpi-3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / PNP: add soc_button_array device ID to PNP IDs list
cpufreq: Makefile: fix compilation for davinci platform
ACPI / video: Add Acer TravelMate B113 to native backlight blacklist
ACPI / video: Add Dell Inspiron 5737 to the blacklist
ACPI / i915: ignore firmware requests for backlight change
ACPI / battery: fix wrong value of capacity_now reported when fully charged
ACPI / resources: only reject zero length resources based at address zero
ACPI / battery: Retry to get battery information if failed during probing
ACPI / EC: Free saved_ec on error exit path
ACPI / EC: Add detailed fields debugging support of EC_SC(R).
ACPI / EC: Update revision due to recent changes
ACPI / EC: Fix race condition in ec_transaction_completed()
ACPI / EC: Remove duplicated ec_wait_ibf0() waiter
ACPI / EC: Add asynchronous command byte write support
ACPI / EC: Avoid race condition related to advance_transaction()
intel_pstate: Set CPU number before accessing MSRs
intel_pstate: Update documentation of {max,min}_perf_pct sysfs files
intel_pstate: don't touch turbo bit if turbo disabled or unavailable.
intel_pstate: Fix setting VID
Revert "ACPI / AC: Remove AC's proc directory."
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Replace open-coded test for empty tx ring buffer with equivalent
helper function, uart_circ_empty(). No functional change.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 717f3bbab3c7628736ef738fdbf3d9a28578c26c,
'serial_core: Fix conditional start_tx on ring buffer not empty'
exposes an incorrect assumption in several drivers' start_tx methods;
the tx ring buffer can, in fact, be empty when restarting tx while
performing flow control.
Affected drivers:
sunsab.c
ip22zilog.c
pmac_zilog.c
sunzilog.c
m32r_sio.c
imx.c
Other in-tree serial drivers either are not affected or already
test for empty tx ring buffer before transmitting.
Test for empty tx ring buffer in start_tx() method, after transmitting
x_char (if applicable).
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Seth Bollinger <sethb@digi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Cc: stable <stable@vger.kernel.org> # 3.15
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adds IDs for MUX clocks to be used by power domain for MFC
for doing re-parenting while pd on/off.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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It reverts commit c745fe611ca42295c9d91d8e305d27983e9132ef now that
Cayman is stable since VDDCI fix. Spread spectrum was not the culprit.
This depends on b0880e87c1fd038b84498944f52e52c3e86ebe59
(drm/radeon/dpm: fix vddci setup typo on cayman).
Signed-off-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Need to use the RREG32_SMC() accessor since the register
is an smc indirect index.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Fixes hangs on driver load on some cards.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=76998
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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If there are error flags in the aux transaction return
-EIO rather than -EBUSY. -EIO restarts the whole transaction
while -EBUSY jus retries. Fixes problematic aux transfers.
Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=80684
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Commit e80991773 ("dm mpath: push back requests instead of queueing")
modified multipath_busy() to return true if !pg_ready(). pg_ready()
checks the current state of the multipath device and may return false
even if a new IO is needed to change the state.
Bart Van Assche reported that he had multipath IO lockup when he was
performing cable pull tests. Analysis showed that the multipath
device had a single path group with both paths active, but that the
path group itself was not active. During the multipath device state
transitions 'queue_io' got set but nothing could clear it. Clearing
'queue_io' only happens in __choose_pgpath(), but it won't be called
if multipath_busy() returns true due to pg_ready() returning false
when 'queue_io' is set.
As such the !pg_ready() check in multipath_busy() is wrong because new
IO will not be sent to multipath target and the multipath state change
won't happen. That results in multipath IO lockup.
The intent of multipath_busy() is to avoid unnecessary cycles of
dequeue + request_fn + requeue if it is known that the multipath
device will requeue.
Such "busy" situations would be:
- path group is being activated
- there is no path and the multipath is setup to requeue if no path
Fix multipath_busy() to return "busy" early only for these specific
situations.
Reported-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # v3.15
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There's a race condition between the atomic_dec_and_test(&io->count)
in dec_count() and the waking of the sync_io() thread. If the thread
is spuriously woken immediately after the decrement it may exit,
making the on stack io struct invalid, yet the dec_count could still
be using it.
Fix this race by using a completion in sync_io() and dec_count().
Reported-by: Minfei Huang <huangminfei@ucloud.cn>
Signed-off-by: Joe Thornber <thornber@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
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Signed-off-by: Jana Saout <jana@saout.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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The commit 2c140a246dc ("dm: allow remove to be deferred") introduced a
deferred removal feature for the device mapper. When this feature is
used (by passing a flag DM_DEFERRED_REMOVE to DM_DEV_REMOVE_CMD ioctl)
and the user tries to remove a device that is currently in use, the
device will be removed automatically in the future when the last user
closes it.
Device mapper used the system workqueue to perform deferred removals.
However, some targets (dm-raid1, dm-mpath, dm-stripe) flush work items
scheduled for the system workqueue from their destructor. If the
destructor itself is called from the system workqueue during deferred
removal, it introduces a possible deadlock - the workqueue tries to flush
itself.
Fix this possible deadlock by introducing a new workqueue for deferred
removals. We allocate just one workqueue for all dm targets. The
ability of dm targets to process IOs isn't dependent on deferred removal
of unused targets, so a deadlock due to shared workqueue isn't possible.
Also, cleanup local_init() to eliminate potential for returning success
on failure.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.13+
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* pm-cpufreq:
cpufreq: Makefile: fix compilation for davinci platform
intel_pstate: Set CPU number before accessing MSRs
intel_pstate: Update documentation of {max,min}_perf_pct sysfs files
intel_pstate: don't touch turbo bit if turbo disabled or unavailable.
intel_pstate: Fix setting VID
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* acpi-video:
ACPI / video: Add Acer TravelMate B113 to native backlight blacklist
ACPI / video: Add Dell Inspiron 5737 to the blacklist
ACPI / i915: ignore firmware requests for backlight change
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* acpi-ec:
ACPI / EC: Free saved_ec on error exit path
ACPI / EC: Add detailed fields debugging support of EC_SC(R).
ACPI / EC: Update revision due to recent changes
ACPI / EC: Fix race condition in ec_transaction_completed()
ACPI / EC: Remove duplicated ec_wait_ibf0() waiter
ACPI / EC: Add asynchronous command byte write support
ACPI / EC: Avoid race condition related to advance_transaction()
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* acpi-resources:
ACPI / resources: only reject zero length resources based at address zero
* acpi-ac:
Revert "ACPI / AC: Remove AC's proc directory."
* acpi-scan:
ACPI / PNP: add soc_button_array device ID to PNP IDs list
* acpi-battery:
ACPI / battery: fix wrong value of capacity_now reported when fully charged
ACPI / battery: Retry to get battery information if failed during probing
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
"Nothing too interesting. All fixes are ahci_platform related"
* 'for-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ahci_xgene: fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command.
libahci: export ahci_qc_issue() and ahci_start_fix_rx()
ata: ahci_imx: warn when disabling ahci link
ahci: disable ncq feature for hisilicon sata
ahci: imx: manage only sata_ref_clk in imx_sata_enable[disable]
libahci_platform: Fail when PHY required but PHY support disabled
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c build fix and cleanup from Wolfram Sang:
"One buildfix for the i2c subsystem. While here, I decided to add the
header cleanup as well"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: sun6i-p2wi: Remove duplicate inclusion of module.h
i2c: mux: pca954x: fix dependencies
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Pull crypto fixes from Herbert Xu:
"This push fixes an error in sha512_ssse3 that leads to incorrect
output as well as a memory leak in caam_jr when the module is
unloaded"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: caam - fix memleak in caam_jr module
crypto: sha512_ssse3 - fix byte count to bit count conversion
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This patch fixes a memory leak that appears when caam_jr module is unloaded.
Cc: <stable@vger.kernel.org> # 3.13+
Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
Fixes for regressions and black screens, cc: stable where applicapable
(the last minute rebase was to sprinkle missing stable tags). A bit more
than what I'd wish for, but excluding vlv and that the first 3 patches are
just quirks for 1 regression it looks much better.
There's still a "oops, lost dithering" issue on older platforms open. I'm
working on a fix for that now but didn't want to delay this pile.
* tag 'drm-intel-fixes-2014-07-09' of git://anongit.freedesktop.org/drm-intel:
drm/i915/vlv: T12 eDP panel timing enforcement during reboot
drm/i915: Only unbind vgacon, not other console drivers
drm/i915: Don't clobber the GTT when it's within stolen memory
drm/i915/vlv: Update the DSI ULPS entry/exit sequence
drm/i915/vlv: DPI FIFO empty check is not needed
drm/i915: Toshiba CB35 has a controllable backlight
drm/i915: Acer C720 and C720P have controllable backlights
drm/i915: quirk asserts controllable backlight presence, overriding VBT
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git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
A couple of DP regression fixes, kepler memory reclocking fixes, and a fix for an annoying display issue that can pop up on resume.
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau/ram: fix test for gpio presence
drm/nouveau/dp: workaround broken display
drm/nouveau/dp: fix required link bandwidth calculations
drm/nouveau/kms: restore fbcon after display has been resumed
drm/nv50-/kms: pass a non-zero value for head to sor dpms methods
drm/nouveau/fb: Prevent inlining of ramfuc_reg
drm/gk104/ram: bash mpll bit 31 on
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Commit f36fdb9f0266 (i8k: Force SMM to run on CPU 0) adds support
for multi-core CPUs to the driver. Unfortunately, that causes it
to fail loading if compiled without SMP support, at least on
32 bit kernels. Kernel log shows "i8k: unable to get SMM Dell
signature", and function i8k_smm is found to return -EINVAL.
Testing revealed that the culprit is the missing return value check
of set_cpus_allowed_ptr.
Fixes: f36fdb9f0266 (i8k: Force SMM to run on CPU 0)
Reported-by: Jim Bos <jim876@xs4all.nl>
Tested-by: Jim Bos <jim876@xs4all.nl>
Cc: stable@vger.kernel.org # 3.14+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds PID 0x0003 to the VID 0x128d (Testo). At least the
Testo 435-4 uses this, likely other gear as well.
Signed-off-by: Bert Vermeulen <bert@biot.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Just a fix for the device reset path and an email address update.
Virtualization
- Fix "wait for pending transactions" for PCI AF reset (Alex
Williamson)
Miscellaneous
- Update mx6 PCI driver maintainer email (Fabio Estevam)"
* tag 'pci-v3.16-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
MAINTAINERS: Update mx6 PCI driver maintainer's email
PCI: Fix unaligned access in AF transaction pending test
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Add code to poll the channel since we process only one message
at a time and the host may not interrupt us. Also increase the
receive buffer size since some KVP messages are close to 8K bytes in size.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Starting with Win8, we have implemented several optimizations to improve the
scalability and performance of the VMBUS transport between the Host and the
Guest. Some of the non-performance critical services cannot leverage these
optimization since they only read and process one message at a time.
Make adjustments to the callback dispatch code to account for the way
non-performance critical drivers handle reading of the channel.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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