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Ulf Hansson [Mon, 25 Aug 2014 10:28:20 +0000 (12:28 +0200)]
mmc: tmio_mmc: Fixup system PM suspend lock-up
At system PM suspend, the tmio core accessed the internal registers of
the controller without first moving the device into active state. This
caused a lock-up in system PM suspend phase.
The reason for the register access were masking of IRQs. Since that is
managed via the runtime PM suspend path, let's just re-use that path
for system PM suspend.
In other words force the device into runtime PM suspend state at system
PM suspend and restore it to active state at system PM resume.
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Mon, 25 Aug 2014 10:18:26 +0000 (12:18 +0200)]
mmc: sdhi: Fixup system PM suspend lock-up
At system PM suspend, the tmio core accessed the internal registers of
the controller without first moving the device into active state. This
caused a lock-up in system PM suspend phase.
The reason for the register access were masking of IRQs. Since that is
managed via the runtime PM suspend path, let's just re-use that path
for system PM suspend.
In other words force the device into runtime PM suspend state at system
PM suspend and restore it to active state at system PM resume.
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Mon, 25 Aug 2014 10:12:02 +0000 (12:12 +0200)]
mmc: tmio_mmc: Enable runtime PM support
To take advantage of the clock gating support, use the runtime PM
callbacks provided by the tmio core.
Additionally, we make use of the SET_PM_RUNTIME_PM_OPS, which is a
preparation needed to simplify system PM.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Mon, 25 Aug 2014 10:06:55 +0000 (12:06 +0200)]
mmc: sdhi: Make runtime PM callbacks available for CONFIG_PM
To be able to simplify system PM, let's re-use the runtime PM callbacks
by converting to the SET_PM_RUNTIME_PM_OPS macro.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Mon, 25 Aug 2014 10:03:20 +0000 (12:03 +0200)]
mmc: tmio: Make runtime PM callbacks available for CONFIG_PM
To give the option for tmio hosts to use the runtime PM callbacks for
CONFIG_PM_SLEEP as well as CONFIG_PM_RUNTIME, move them to CONFIG_PM.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Mon, 25 Aug 2014 09:55:57 +0000 (11:55 +0200)]
mmc: tmio: Mask all IRQs when inactive
To make sure we don't receive any spurious IRQs while we are inactive,
mask the IRQs from within the ->runtime_suspend() callback.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Tue, 29 Oct 2013 23:16:17 +0000 (00:16 +0100)]
mmc: tmio: Handle clock gating from runtime PM functions
Add clock gating control as a part of the tmio library functions for
runtime PM.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Thu, 24 Oct 2013 15:53:15 +0000 (17:53 +0200)]
mmc: tmio: Restructure ->set_ios() and adapt ->probe() to it
An internal power state machine were beeing used to keep ->probe() and
->set_ios() in sync. Especially for handling specific scenarios while
using CONFIG_MMC_CLKGATE. Moreover dependency to CONFIG_MMC_CLKGATE
existed to handle runtime PM properly, which we moves away from here.
By removing the state machine and instead make ->set_ios() rely on the
information provided through the function's in-parameters, the code
becomes significantly simplier.
Additonally as a part of this rework we prepares for making the runtime
PM callbacks responsible of clock gating.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Thu, 24 Oct 2013 15:42:53 +0000 (17:42 +0200)]
mmc: tmio: Extract bus_width modifications to a separate function
Move code for bus_width modification, out of the ->set_ios() callback
and into a separate function, to simplify code.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Thu, 24 Oct 2013 14:42:33 +0000 (16:42 +0200)]
mmc: tmio: Keep host active while serving requests
Use runtime PM to keep the host active during I/O operations and other
requests which requires the tmio hardware to be powered.
Additionally make use of the runtime PM autosuspend feature with a
default timeout of 50 ms.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Ulf Hansson [Thu, 24 Oct 2013 13:58:45 +0000 (15:58 +0200)]
mmc: tmio: Keep host active while SDIO IRQ is enabled
The host must be kept active to be able to serve SDIO IRQs, thus let's
prevent it from going inactive while SDIO IRQ is enabled.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Nicolas Ferre [Thu, 12 Jun 2014 07:47:45 +0000 (09:47 +0200)]
mmc: atmel-mci: add 0x600 IP version
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Javier Martinez Canillas [Thu, 14 Aug 2014 12:39:00 +0000 (14:39 +0200)]
mmc: core: Use regulator_get_voltage() if OCR mask is empty.
The operation conditions register (OCR) stores the voltage
profile of the card, however the list of possible voltages
is restricted by the voltage range supported by the supply
used as VCC/VDD. So in mmc_vddrange_to_ocrmask() a OCR mask
is obtained to filter the not supported voltages, from the
value read in the host controller OCR register.
For fixed regulators, regulator_list_voltage() returns the
fixed output for the first selector but this doesn't happen
for switch (FET) regulators that obtain their voltage from
their parent supply. A call to regulator_get_voltage() is
needed in this case so the regulator core can return the
FET's parent supply voltage output.
This change is consistent with the fact that for other
fixed regulators (that are not FETs) the OCR mask is
returned even when mmc_regulator_set_ocr() checks if the
regulator is fixed before calling regulator_set_voltage().
Without this patch, the following warning is reported when
a FET is used as a vmmc-supply:
dwmmc_exynos
12220000.mmc: Failed getting OCR mask: -22
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Sascha Hauer [Tue, 19 Aug 2014 08:45:51 +0000 (10:45 +0200)]
mmc: implement Driver Stage Register handling
Some eMMC and SD cards implement a DSR register that allows to tune
raise/fall times and drive strength of the CMD and DATA outputs.
The values to use depend on the card in use and the host.
It might be needed to reduce the drive strength to prevent voltage peaks
above the host's specification.
Implement a 'dsr' devicetree property that allows to specify the value
to set the DSR to. For non-dt setups the new members of mmc_host can be
set by board code.
This patch was initially authored by Sascha Hauer. It contains
improvements authored by Markus Niebel and Uwe Kleine-König.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Peter Griffin [Fri, 15 Aug 2014 13:02:15 +0000 (14:02 +0100)]
mmc: sdhci-pxav3: set_uhs_signaling is initialized twice differently
.set_uhs_signaling field is currently initialised twice once to the
arch specific callback pxav3_set_uhs_signaling, and also to the generic
sdhci_set_uhs_signaling callback.
This means that uhs is currently broken for this platform currently, as pxav3
has some special constriants which means it can't use the generic callback.
This happened in
commit
96d7b78cfc2f ("mmc: sdhci: convert sdhci_set_uhs_signaling() into a library function")
commit
a702c8abb2a9 ("mmc: host: split up sdhci-pxa, create sdhci-pxav3.c")'
Fix this and hopefully prevent it happening in the future by ensuring named
initialisers always follow the declaration order in the structure definition.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Peter Griffin [Tue, 12 Aug 2014 16:14:29 +0000 (17:14 +0100)]
mmc: sdhci-acpi.c: Use SET_RUNTIME_PM_OPS macro to set runtime pm callbacks
This allows us to get rid of the #else condition, as the macro compiles
away to nothing if not enabled.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Peter Griffin [Tue, 12 Aug 2014 16:14:28 +0000 (17:14 +0100)]
mmc: sdhci-pci: Use SET_RUNTIME_PM_OPS macro to set runtime pm callbacks
This allows us to get rid of the #else condition, as the macro compiles
away to nothing if not enabled.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Peter Griffin [Tue, 12 Aug 2014 16:14:27 +0000 (17:14 +0100)]
mmc: dw_mmc-pltfm: Remove superflous #else condition on CONFIG_PM_SLEEP
As the code is using SIMPLE_DEV_PM_OPS helper, this compiles away to
nothing if CONFIG_PM_SLEEP is disabled. Thus we don't need to #define
the suspend/resume callbacks to NULL.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Peter Griffin [Tue, 12 Aug 2014 16:14:26 +0000 (17:14 +0100)]
mmc: dw_mmc-pci: Remove superflous #else condition on CONFIG_PM_SLEEP
As the code is using SIMPLE_DEV_PM_OPS helper, this compiles away to
nothing if CONFIG_PM_SLEEP is disabled. Thus we don't need to #define
the suspend/resume callbacks to NULL.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Peter Griffin [Tue, 12 Aug 2014 16:14:25 +0000 (17:14 +0100)]
mmc: remove .owner field for drivers using module_platform_driver
This patch removes the superflous .owner field for drivers which
use the module_platform_driver API, as this is overriden in
platform_driver_register anyway.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Fu Zhonghui [Mon, 18 Aug 2014 02:48:14 +0000 (10:48 +0800)]
mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread
781e989cf59 ("mmc: sdhci: convert to new SDIO IRQ handling") and
bf3b5ec66bd ("mmc: sdio_irq: rework sdio irq handling") disabled
the use of our own custom threaded IRQ handler, but left in an
unconditional wake_up_process() on that handler at resume-time.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=80151
In addition, the check for MMC_CAP_SDIO_IRQ capability is added
before enable sdio IRQ.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Fu Zhonghui <zhonghui.fu@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Andrew Bresticker [Thu, 14 Aug 2014 16:45:28 +0000 (09:45 -0700)]
mmc: dw_mmc: Add support for MIPS
There are upcoming MIPS SoCs with dw_mmc hosts.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Andrew Bresticker [Thu, 14 Aug 2014 16:45:27 +0000 (09:45 -0700)]
mmc: dw_mmc: Add dependency on DMA
The dw_mmc drivers rely on the DMA API, so update the Kconfig entry
to depend on HAS_DMA. Since the drivers should build on any platform
with DMA, allow the driver to compile tested on non-ARC/ARM platforms.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Matthieu CASTET [Thu, 14 Aug 2014 14:03:18 +0000 (16:03 +0200)]
sdhci : recompute timeout_clk when needed
when SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK is set, timeout_clk is sdclk.
We need to update it when we change sdclk in sdhci_set_clock.
This allow to have a more precisse timeout and max_busy_timeout. This
can help for command that need a big busy wait (erase, ...).
Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Matthieu CASTET [Thu, 14 Aug 2014 14:03:17 +0000 (16:03 +0200)]
sdhci : handle busy timeout irq
When we wait for busy after sending a command, if there is
a timeout, we got SDHCI_INT_DATA_TIMEOUT flags.
Before this commit we got the message :
"Got data interrupt 0x00100000 even though no data operation was in progress."
and we need to wait 10s that sdhci_timeout_timer expires.
Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Roger Tseng [Fri, 15 Aug 2014 06:06:01 +0000 (14:06 +0800)]
mmc: rtsx_usb_sdmmc: fix incorrect last byte in R2 response
Current code erroneously fill the last byte of R2 response with an undefined
value. In addition, the controller actually 'offloads' the last byte
(CRC7, end bit) while receiving R2 response and thus it's impossible to get the
actual value. This could cause mmc stack to obtain inconsistent CID from the
same card after resume and misidentify it as a different card.
Fix by assigning dummy CRC and end bit: {7'b0, 1} = 0x1 to the last byte of R2.
Cc: <stable@vger.kernel.org> # v3.16+
Fixes:
c7f6558d84af ("mmc: Add realtek USB sdmmc host driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Roger Tseng [Fri, 15 Aug 2014 06:06:00 +0000 (14:06 +0800)]
mmc: rtsx_pci_sdmmc: fix incorrect last byte in R2 response
Current code erroneously fill the last byte of R2 response with an undefined
value. In addition, the controller actually 'offloads' the last byte
(CRC7, end bit) while receiving R2 response and thus it's impossible to get the
actual value. This could cause mmc stack to obtain inconsistent CID from the
same card after resume and misidentify it as a different card.
Fix by assigning dummy CRC and end bit: {7'b0, 1} = 0x1 to the last byte of R2.
Cc: <stable@vger.kernel.org> # v3.8+
Fixes:
ff984e57d36e ("mmc: Add realtek pcie sdmmc host driver")
Signed-off-by: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Wei Yongjun [Thu, 14 Aug 2014 01:00:19 +0000 (09:00 +0800)]
mmc: au1xmmc: fix error return code in au1xmmc_probe()
Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Doug Anderson [Wed, 13 Aug 2014 15:13:43 +0000 (08:13 -0700)]
mmc: dw_mmc: Make sure we don't get stuck when we get an error
If we happened to get a data error at just the wrong time the dw_mmc
driver could get into a state where it would never complete its
request. That would leave the caller just hanging there.
We fix this two ways and both of the two fixes on their own appear to
fix the problems we've seen:
1. Fix a race in the tasklet where the interrupt setting the data
error happens _just after_ we check for it, then we get a
EVENT_XFER_COMPLETE. We fix this by repeating a bit of code.
2. Fix it so that if we detect that we've got an error in the "data
busy" state and we're not going to do anything else we end the
request and unblock anyone waiting.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@gmail.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Yi Sun [Wed, 13 Aug 2014 05:34:01 +0000 (13:34 +0800)]
mmc: Correct the value of MMC_NUM_PHY_PARTITION
eMMC card can support up to 7 physical partitions, including 2 boot,
1 RPMB and 4 GPs. Change MMC_NUM_PHY_PARTITION from 6 to 7, which is
the correct value.
Signed-off-by: Yi Sun <yi.y.sun@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Chuanxiao.Dong [Fri, 1 Aug 2014 06:00:13 +0000 (14:00 +0800)]
mmc: sdhci: fix the wrong type of curr
curr should use signed type since it will contain the returned
value which is possible to be a negative value. Using u32 will
make the returned value to be true even there is a negative result.
Change to use int instead of u32
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Apelete Seketeli [Mon, 21 Jul 2014 04:37:45 +0000 (06:37 +0200)]
mmc: jz4740: prepare next dma transfer in parallel with current transfer
Make use of the MMC asynchronous request capability to prepare the
next DMA transfer request in parallel with the current transfer.
This is done by adding pre-request and post-request callbacks that are
used by the MMC framework during an active data transfer.
It should help reduce the impact of DMA preparation overhead on the SD
card performance.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Apelete Seketeli [Mon, 21 Jul 2014 04:37:44 +0000 (06:37 +0200)]
mmc: jz4740: add dma infrastructure for data transfers
Until now the MMC driver for JZ4740 SoC was relying on PIO mode only
for data transfers.
This patch allows the use of DMA for data trasnfers in addition to PIO
mode by relying on DMA Engine.
DMA tranfers performance might be further improved by taking advantage
of the asynchronous request capability of the MMC framework.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Addy Ke [Thu, 31 Jul 2014 06:01:38 +0000 (14:01 +0800)]
mmc: dw_mmc: add support for RK3288
This patch focuses on clock setting for RK3288 mmc controller.
In RK3288 mmc controller, CLKDIV register can only be set 0 or 1,
and if DDR 8bit mode, CLKDIV register must be set 1.
Signed-off-by: Addy Ke <addy.ke@rock-chips.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Hans-Christian Egtvedt [Thu, 7 Aug 2014 13:14:06 +0000 (15:14 +0200)]
mmc: include linux/types.h for bool definition in atmel-mci.h
This patch adds an include of linux/types.h to make sure bool is defined
before utilized in this header file.
Signed-off-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Pawel Moll [Tue, 12 Aug 2014 10:37:52 +0000 (11:37 +0100)]
mmc: sdhci-pltfm: Do not use parent as the host's device
The code selecting a device for the sdhci host has been
continuously tweaked (
4b711cb13843f5082e82970dd1e8031383134a65
"mmc: sdhci-pltfm: Add structure for host-specific data" and
a4d2177f00a5252d825236c5124bc1e9918bdb41 "mmc: sdhci-pltfm: dt
device does not pass parent to sdhci_alloc_host" while there
does not seem to be any reason to use platform device's parent
in the first place.
The comment saying "Some PCI-based MFD need the parent here"
seem to refer to Timberdale FPGA driver (the only MFD driver
registering SDHCI cell, drivers/mfd/timberdale.c) but again,
the only situation when parent device matter is runtime PM,
which is not implemented for Timberdale.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tim Kryger [Tue, 12 Aug 2014 05:05:12 +0000 (22:05 -0700)]
mmc: core: Remove fixed voltage regulator logic
There is no need for regulator consumers to include special logic for
fixed voltage regulators as they support regulator_set_voltage() just
like their non-fixed regulator counterparts.
Signed-off-by: Tim Kryger <tim.kryger@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Srinivas Kandagatla [Tue, 29 Jul 2014 02:50:30 +0000 (03:50 +0100)]
mmc: mmci: Add qcom dml support to the driver.
On Qualcomm APQ8064 SOCs, SD card controller has an additional glue
called DML (Data Mover Local/Lite) to assist dma transfers.
This hardware needs to be setup before any dma transfer is requested.
DML itself is not a DMA engine, its just a gule between the SD card
controller and dma controller.
Most of this code has been ported from qualcomm's 3.4 kernel.
This patch adds the code necessary to intialize the hardware and setup
before doing any dma transfers.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Bartlomiej Zolnierkiewicz [Thu, 7 Aug 2014 16:07:07 +0000 (18:07 +0200)]
mmc: sdhci-s3c: fix runtime PM handling on sdhci_add_host() failure
Runtime Power Management handling for the sdhci_add_host() failure
case in sdhci_s3c_probe() should match the code in sdhci_s3c_remove()
(which uses pm_runtime_disable() call which matches the earlier
pm_runtime_enable() one). Fix it.
This patch fixes "BUG: spinlock bad magic on CPU#0, swapper/0/1" and
"Unbalanced pm_runtime_enable!" warnings.
>From the kernel log:
...
[ 1.659631] s3c-sdhci
12530000.sdhci: sdhci_add_host() failed
[ 1.665096] BUG: spinlock bad magic on CPU#0, swapper/0/1
[ 1.670433] lock: 0xea01e484, .magic:
00000000, .owner: <none>/-1, .owner_cpu: 0
[ 1.677895] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
3.16.0-next-20140804-00008-ga59480f-dirty #707
[ 1.687037] [<
c0013ae4>] (unwind_backtrace) from [<
c0010d70>] (show_stack+0x10/0x14)
[ 1.694740] [<
c0010d70>] (show_stack) from [<
c04050c8>] (dump_stack+0x68/0xb8)
[ 1.701948] [<
c04050c8>] (dump_stack) from [<
c0052558>] (do_raw_spin_lock+0x15c/0x1a4)
[ 1.709848] [<
c0052558>] (do_raw_spin_lock) from [<
c040a630>] (_raw_spin_lock_irqsave+0x20/0x28)
[ 1.718619] [<
c040a630>] (_raw_spin_lock_irqsave) from [<
c030d7d0>] (sdhci_do_set_ios+0x1c/0x5cc)
[ 1.727464] [<
c030d7d0>] (sdhci_do_set_ios) from [<
c030ddfc>] (sdhci_runtime_resume_host+0x50/0x104)
[ 1.736574] [<
c030ddfc>] (sdhci_runtime_resume_host) from [<
c02462dc>] (pm_generic_runtime_resume+0x2c/0x40)
[ 1.746383] [<
c02462dc>] (pm_generic_runtime_resume) from [<
c0247898>] (__rpm_callback+0x34/0x70)
[ 1.755233] [<
c0247898>] (__rpm_callback) from [<
c02478fc>] (rpm_callback+0x28/0x88)
[ 1.762958] [<
c02478fc>] (rpm_callback) from [<
c02486f0>] (rpm_resume+0x384/0x4ec)
[ 1.770511] [<
c02486f0>] (rpm_resume) from [<
c02488b0>] (pm_runtime_forbid+0x58/0x64)
[ 1.778325] [<
c02488b0>] (pm_runtime_forbid) from [<
c030ea70>] (sdhci_s3c_probe+0x4a4/0x540)
[ 1.786749] [<
c030ea70>] (sdhci_s3c_probe) from [<
c02429cc>] (platform_drv_probe+0x2c/0x5c)
[ 1.795076] [<
c02429cc>] (platform_drv_probe) from [<
c02415f0>] (driver_probe_device+0x114/0x234)
[ 1.803929] [<
c02415f0>] (driver_probe_device) from [<
c024179c>] (__driver_attach+0x8c/0x90)
[ 1.812347] [<
c024179c>] (__driver_attach) from [<
c023ffb4>] (bus_for_each_dev+0x54/0x88)
[ 1.820506] [<
c023ffb4>] (bus_for_each_dev) from [<
c0240df8>] (bus_add_driver+0xd8/0x1cc)
[ 1.828665] [<
c0240df8>] (bus_add_driver) from [<
c0241db8>] (driver_register+0x78/0xf4)
[ 1.836652] [<
c0241db8>] (driver_register) from [<
c00088a4>] (do_one_initcall+0x80/0x1d0)
[ 1.844816] [<
c00088a4>] (do_one_initcall) from [<
c059ac94>] (kernel_init_freeable+0x108/0x1d4)
[ 1.853503] [<
c059ac94>] (kernel_init_freeable) from [<
c0401300>] (kernel_init+0x8/0xe4)
[ 1.861568] [<
c0401300>] (kernel_init) from [<
c000e538>] (ret_from_fork+0x14/0x3c)
[ 1.869582] platform
12530000.sdhci: Driver s3c-sdhci requests probe deferral
...
[ 1.997047] s3c-sdhci
12530000.sdhci: Unbalanced pm_runtime_enable!
...
[ 2.027235] s3c-sdhci
12530000.sdhci: sdhci_add_host() failed
[ 2.032884] platform
12530000.sdhci: Driver s3c-sdhci requests probe deferral
...
Tested on Hardkernel's Exynos4412 based ODROID-U3 board.
Fixes:
9f4e8151dbbc ("mmc: sdhci-s3c: Enable runtime power management")
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Linus Torvalds [Sun, 7 Sep 2014 23:09:43 +0000 (16:09 -0700)]
Linux 3.17-rc4
Sudip Mukherjee [Sun, 7 Sep 2014 18:26:12 +0000 (11:26 -0700)]
Documentation: new page link in SubmittingPatches
new link for - How to piss off a Linux kernel subsystem maintainer
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Bolle [Sun, 7 Sep 2014 18:25:55 +0000 (11:25 -0700)]
Documentation: NFS/RDMA: Document separate Kconfig symbols
The NFS/RDMA Kconfig symbol was split into separate options for client
and server in commit
2e8c12e1b765 ("xprtrdma: add separate Kconfig
options for NFSoRDMA client and server support").
Update the documentation to reflect this split.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "J. Bruce Fields" <bfields@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Masanari Iida [Sun, 7 Sep 2014 18:25:45 +0000 (11:25 -0700)]
Documentation: misc-devices: Rename freefall.c from hpfall.c in lis2lv02d
hpfall.c was renamed to freefall.c in 3.16, but this file still refer to
hpfall.c instead of freefall.c
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jose Manuel Alarcon Roldan [Sun, 7 Sep 2014 18:25:00 +0000 (11:25 -0700)]
Documentation: i2c: rename variable "register" to "reg"
The example code provided with the i2c device interface documentation
won't compile since it uses the reserved word "register" to name a
variable.
The compiler fails with this error message:
error: expected identifier or '(' before '=' token
__u8 register = 0x20; /* Device register to access */
^
Rename the variable "register" to simply "reg" in the example code.
Another couple of typos has been fixed as well.
[Change "! =" to "!=".]
Signed-off-by: Jose Alarcon Roldan <jose.alarcon.roldan@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rob Jones [Sun, 7 Sep 2014 18:24:40 +0000 (11:24 -0700)]
Documentation: seq_file: Document seq_open_private(), seq_release_private()
Despite the fact that these functions have been around for years, they
are little used (only 15 uses in 13 files at the preseht time) even
though many other files use work-arounds to achieve the same result.
By documenting them, hopefully they will become more widely used.
Signed-off-by: Rob Jones <rob.jones@codethink.co.uk>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 7 Sep 2014 18:57:27 +0000 (11:57 -0700)]
Merge tag 'pm+acpi-3.17-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These are regression fixes (ACPI sysfs, ACPI video, suspend test),
ACPI cpuidle deadlock fix, missing runtime validation of ACPI _DSD
output, a fix and a new CPU ID for the RAPL driver, new blacklist
entry for the ACPI EC driver and a couple of trivial cleanups
(intel_pstate and generic PM domains).
Specifics:
- Fix for recently broken test_suspend= command line argument (Rafael
Wysocki).
- Fixes for regressions related to the ACPI video driver caused by
switching the default to native backlight handling in 3.16 from
Hans de Goede.
- Fix for a sysfs attribute of ACPI device objects that returns stale
values sometimes due to the fact that they are cached instead of
executing the appropriate method (_SUN) every time (broken in
3.14). From Yasuaki Ishimatsu.
- Fix for a deadlock between cpuidle_lock and cpu_hotplug.lock in the
ACPI processor driver from Jiri Kosina.
- Runtime output validation for the ACPI _DSD device configuration
object missing from the support for it that has been introduced
recently. From Mika Westerberg.
- Fix for an unuseful and misleading RAPL (Running Average Power
Limit) domain detection message in the RAPL driver from Jacob Pan.
- New Intel Haswell CPU ID for the RAPL driver from Jason Baron.
- New Clevo W350etq blacklist entry for the ACPI EC driver from Lan
Tianyu.
- Cleanup for the intel_pstate driver and the core generic PM domains
code from Gabriele Mazzotta and Geert Uytterhoeven"
* tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
ACPI / scan: not cache _SUN value in struct acpi_device_pnp
cpufreq: intel_pstate: Remove unneeded variable
powercap / RAPL: change domain detection message
powercap / RAPL: add support for CPU model 0x3f
PM / domains: Make generic_pm_domain.name const
PM / sleep: Fix test_suspend= command line option
ACPI / EC: Add msi quirk for Clevo W350etq
ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC
ACPI / video: Add a disable_native_backlight quirk
ACPI / video: Fix use_native_backlight selection logic
ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.
Linus Torvalds [Sun, 7 Sep 2014 17:59:58 +0000 (10:59 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull filesystem fixes from Al Viro:
"Several bugfixes (all of them -stable fodder).
Alexey's one deals with double mutex_lock() in UFS (apparently, nobody
has tried to test "ufs: sb mutex merge + mutex_destroy" on something
like file creation/removal on ufs). Mine deal with two kinds of
umount bugs, in umount propagation and in handling of automounted
submounts, both resulting in bogus transient EBUSY from umount"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ufs: fix deadlocks introduced by sb mutex merge
fix EBUSY on umount() from MNT_SHRINKABLE
get rid of propagate_umount() mistakenly treating slaves as busy.
Linus Torvalds [Sun, 7 Sep 2014 17:51:42 +0000 (10:51 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull RCU fix from Ingo Molnar:
"A boot hang fix for the offloaded callback RCU model (RCU_NOCB_CPU=y
&& (TREE_CPU=y || TREE_PREEMPT_RC)) in certain bootup scenarios"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rcu: Make nocb leader kthreads process pending callbacks after spawning
Linus Torvalds [Sun, 7 Sep 2014 17:37:48 +0000 (10:37 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Three fixlets from the timer departement:
- Update the timekeeper before updating vsyscall and pvclock. This
fixes the kvm-clock regression reported by Chris and Paolo.
- Use the proper irq work interface from NMI. This fixes the
regression reported by Catalin and Dave.
- Clarify the compat_nanosleep error handling mechanism to avoid
future confusion"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Update timekeeper before updating vsyscall and pvclock
compat: nanosleep: Clarify error handling
nohz: Restore NMI safe local irq work for local nohz kick
Alexey Khoroshilov [Tue, 2 Sep 2014 07:40:17 +0000 (11:40 +0400)]
ufs: fix deadlocks introduced by sb mutex merge
Commit
0244756edc4b ("ufs: sb mutex merge + mutex_destroy") introduces
deadlocks in ufs_new_inode() and ufs_free_inode().
Most callers of that functions acqure the mutex by themselves and
ufs_{new,free}_inode() do that via lock_ufs(),
i.e we have an unavoidable double lock.
The patch proposes to resolve the issue by making sure that
ufs_{new,free}_inode() are not called with the mutex held.
Found by Linux Driver Verification project (linuxtesting.org).
Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sat, 6 Sep 2014 23:42:12 +0000 (16:42 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"A smattering of bug fixes across most architectures"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
powerpc/kvm/cma: Fix panic introduces by signed shift operation
KVM: s390/mm: Fix guest storage key corruption in ptep_set_access_flags
KVM: s390/mm: Fix storage key corruption during swapping
arm/arm64: KVM: Complete WFI/WFE instructions
ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU
KVM: s390/mm: try a cow on read only pages for key ops
KVM: s390: Fix user triggerable bug in dead code
Linus Torvalds [Sat, 6 Sep 2014 19:37:43 +0000 (12:37 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Kevin Hilman:
"Another round of fixes from arm-soc land, which are mostly DT fixes
for:
- OMAP: handful of DT fixes devices on newly supported hardware
- davinci: fix 2nd EDMA channel
- ux500: extend previous pinctrl fix to another board
- at91: clock registration fixes, compatibility string precision
And one more fix for event cleanup in drivers/bus/arm-ccn"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
bus: arm-ccn: Move event cleanup routine
ARM: at91/dt: rm9200: fix usb clock definition
ARM: at91: rm9200: fix clock registration
ARM: at91/dt: sam9g20: set at91sam9g20 pllb driver
ARM: dts: dra7-evm: Add vtt regulator support
ARM: dts: dra7-evm: Fix spi1 mux documentation
ARM: dts: am43x-epos-evm: Disable QSPI to prevent conflict with GPMC-NAND
ARM: OMAP2+: gpmc: Don't complain if wait pin is used without r/w monitoring
ARM: dts: am43xx-epos-evm: Don't use read/write wait monitoring
ARM: dts: am437x-gp-evm: Don't use read/write wait monitoring
ARM: dts: am437x-gp-evm: Use BCH16 ECC scheme instead of BCH8
ARM: dts: am43x-epos-evm: Use BCH16 ECC scheme instead of BCH8
ARM: dts: am4372: fix USB regs size
ARM: dts: am437x-gp: switch i2c0 to 100KHz
ARM: dts: dra7-evm: Fix 8th NAND partition's name
ARM: dts: dra7-evm: Fix i2c3 pinmux and frequency
ARM: ux500: disable msp2 node on Snowball
ARM: edma: Fix configuration parsing for SoCs with multiple eDMA3 CC
ARM: dts: set 'ti,set-rate-parent' for dpll4_m5x2 clock
Linus Torvalds [Sat, 6 Sep 2014 19:13:17 +0000 (12:13 -0700)]
Merge tag 'xfs-for-linus-3.17-rc3' of git://git./linux/kernel/git/dgc/linux-xfs
Pull xfs fixes from Dave Chinner:
"The fixes all address recently discovered data corruption issues.
The original Direct IO issue was discovered by Chris Mason @ Facebook
on a production workload which mixed buffered reads with direct reads
and writes IO to the same file. The fix for that exposed other issues
with page invalidation (exposed by millions of fsx operations) failing
due to dirty buffers beyond EOF.
Finally, the collapse_range code could also cause problems due to
racing writeback changing the extent map while it was being shifted
around. The commits for that problem are simple mitigation fixes that
prevent the problem from occuring. A more robust fix for 3.18 that
addresses the underlying problem is currently being worked on by
Brian.
Summary of fixes:
- a direct IO read/buffered read data corruption
- the associated fallout from the DIO data corruption fix
- collapse range bugs that are potential data corruption issues"
* tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: trim eofblocks before collapse range
xfs: xfs_file_collapse_range is delalloc challenged
xfs: don't log inode unless extent shift makes extent modifications
xfs: use ranged writeback and invalidation for direct IO
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't dirty buffers beyond EOF
Linus Torvalds [Sat, 6 Sep 2014 19:12:09 +0000 (12:12 -0700)]
Merge tag 'for-linus-
20140905' of git://git.infradead.org/linux-mtd
Pull mtd fixes from Brian Norris:
"Two trivial MTD updates for 3.17-rc4:
- a tiny comment tweak, to kill a bunch of DocBook warnings added
during the merge window
- a small fixup to the OTP routines' error handling"
* tag 'for-linus-
20140905' of git://git.infradead.org/linux-mtd:
mtd: nand: fix DocBook warnings on nand_sdr_timings doc
mtd: cfi_cmdset_0002: check return code for get_chip()
Thomas Gleixner [Sat, 6 Sep 2014 10:24:49 +0000 (12:24 +0200)]
timekeeping: Update timekeeper before updating vsyscall and pvclock
The update_walltime() code works on the shadow timekeeper to make the
seqcount protected region as short as possible. But that update to the
shadow timekeeper does not update all timekeeper fields because it's
sufficient to do that once before it becomes life. One of these fields
is tkr.base_mono. That stays stale in the shadow timekeeper unless an
operation happens which copies the real timekeeper to the shadow.
The update function is called after the update calls to vsyscall and
pvclock. While not correct, it did not cause any problems because none
of the invoked update functions used base_mono.
commit
cbcf2dd3b3d4 (x86: kvm: Make kvm_get_time_and_clockread()
nanoseconds based) changed that in the kvm pvclock update function, so
the stale mono_base value got used and caused kvm-clock to malfunction.
Put the update where it belongs and fix the issue.
Reported-by: Chris J Arges <chris.j.arges@canonical.com>
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1409050000570.3333@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Sat, 6 Sep 2014 10:18:07 +0000 (12:18 +0200)]
compat: nanosleep: Clarify error handling
The error handling in compat_sys_nanosleep() is correct, but
completely non obvious. Document it and restrict it to the
-ERESTART_RESTARTBLOCK return value for clarity.
Reported-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Linus Torvalds [Fri, 5 Sep 2014 20:45:09 +0000 (13:45 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c bugfixes from Wolfram Sang:
"I2C driver bugfixes for the 3.17 release. Details can be found in the
commit messages, yet I think this is typical driver stuff"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
Revert "i2c: rcar: remove spinlock"
i2c: at91: add bound checking on SMBus block length bytes
i2c: rk3x: fix bug that cause transfer fails in master receive mode
i2c: at91: Fix a race condition during signal handling in at91_do_twi_xfer.
i2c: mv64xxx: continue probe when clock-frequency is missing
i2c: rcar: fix MNR interrupt handling
Kevin Hilman [Fri, 5 Sep 2014 20:28:33 +0000 (13:28 -0700)]
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
Merge "at91: fixes for 3.17 #1" from Nicols Ferre:
First AT91 fixes batch for 3.17:
- compatibility string precision
- clock registration and USB DT fix for at91rm9200
* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
ARM: at91/dt: rm9200: fix usb clock definition
ARM: at91: rm9200: fix clock registration
ARM: at91/dt: sam9g20: set at91sam9g20 pllb driver
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Pawel Moll [Tue, 2 Sep 2014 15:26:11 +0000 (16:26 +0100)]
bus: arm-ccn: Move event cleanup routine
The function cleaning up an initialized event
was called from the "event_del" handler, instead
of being used as the "destroy" callback. In case of
events group allocation this caused NULL pointer
dereference (as events are added and deleted
multiple times then). Fixed now.
Signed-off-by: Pawel Moll <mail@pawelmoll.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Linus Torvalds [Fri, 5 Sep 2014 15:43:48 +0000 (08:43 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
"Wire up new syscalls getrandom and memfd_create"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Wire up memfd_create
m68k: Wire up getrandom
Alexandre Belloni [Fri, 5 Sep 2014 14:45:12 +0000 (16:45 +0200)]
ARM: at91/dt: rm9200: fix usb clock definition
The atmel,clk-divisors property is taking 4 divisors, if less are
provided, the clock registration will fail.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Alexandre Belloni [Fri, 5 Sep 2014 14:15:33 +0000 (16:15 +0200)]
ARM: at91: rm9200: fix clock registration
Actually register clocks from device tree when using the common clock
framework.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[nicolas.ferre@atmel.com: add at91 to function name]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Gaël PORTAY [Mon, 1 Sep 2014 21:29:46 +0000 (23:29 +0200)]
ARM: at91/dt: sam9g20: set at91sam9g20 pllb driver
The at91sam9g20 SOC uses its own pllb implementation which is different
from the one inherited from at91sam9260 SOC.
Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Johannes Weiner [Fri, 5 Sep 2014 12:43:57 +0000 (08:43 -0400)]
mm: memcontrol: revert use of root_mem_cgroup res_counter
Dave Hansen reports a massive scalability regression in an uncontained
page fault benchmark with more than 30 concurrent threads, which he
bisected down to
05b843012335 ("mm: memcontrol: use root_mem_cgroup
res_counter") and pin-pointed on res_counter spinlock contention.
That change relied on the per-cpu charge caches to mostly swallow the
res_counter costs, but it's apparent that the caches don't scale yet.
Revert memcg back to bypassing res_counters on the root level in order
to restore performance for uncontained workloads.
Reported-by: Dave Hansen <dave@sr71.net>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Tested-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Altaparmakov [Thu, 21 Aug 2014 10:09:27 +0000 (11:09 +0100)]
Export sync_filesystem() for modular ->remount_fs() use
This patch changes sync_filesystem() to be EXPORT_SYMBOL().
The reason this is needed is that starting with 3.15 kernel, due to
Theodore Ts'o's commit
02b9984d6408 ("fs: push sync_filesystem() down to
the file system's remount_fs()"), all file systems that have dirty data
to be written out need to call sync_filesystem() from their
->remount_fs() method when remounting read-only.
As this is now a generically required function rather than an internal
only function it should be EXPORT_SYMBOL() so that all file systems can
call it.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 5 Sep 2014 15:09:02 +0000 (08:09 -0700)]
Merge tag 'regulator-v3.17-rc3' of git://git./linux/kernel/git/broonie/regulator
Pull regulator documentation fixes from Mark Brown:
"All the fixes people have found for the regulator API have been
documentation fixes, avoiding warnings while building the kerneldoc,
fixing some errors in one of the DT bindings documents and fixing some
typos in the header"
* tag 'regulator-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: fix kernel-doc warnings in header files
regulator: Proofread documentation
regulator: tps65090: Fix tps65090 typos in example
Kevin Hilman [Fri, 5 Sep 2014 15:01:52 +0000 (08:01 -0700)]
Merge tag 'omap-fixes-against-v3.17-rc3' of git://git./linux/kernel/git/tmlind/linux-omap into fixes
Merge "omap fixes against v3.17-rc3" from Tony Lindgren:
Few fixes for omaps mostly for various devices to get them working
properly on the new am437x and dra7 hardware for several devices
such as I2C, NAND, DDR3 and USB. There's also a clock fix for omap3.
And also included are two minor cosmetic fixes that are not
stictly fixes for the new hardware support added recently to
downgrade a GPMC warning into a debug statement, and fix the
confusing comments for dra7-evm spi1 mux.
Note that these are all .dts changes except for a GPMC change.
* tag 'omap-fixes-against-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (255 commits)
ARM: dts: dra7-evm: Add vtt regulator support
ARM: dts: dra7-evm: Fix spi1 mux documentation
ARM: dts: am43x-epos-evm: Disable QSPI to prevent conflict with GPMC-NAND
ARM: OMAP2+: gpmc: Don't complain if wait pin is used without r/w monitoring
ARM: dts: am43xx-epos-evm: Don't use read/write wait monitoring
ARM: dts: am437x-gp-evm: Don't use read/write wait monitoring
ARM: dts: am437x-gp-evm: Use BCH16 ECC scheme instead of BCH8
ARM: dts: am43x-epos-evm: Use BCH16 ECC scheme instead of BCH8
ARM: dts: am4372: fix USB regs size
ARM: dts: am437x-gp: switch i2c0 to 100KHz
ARM: dts: dra7-evm: Fix 8th NAND partition's name
ARM: dts: dra7-evm: Fix i2c3 pinmux and frequency
Linux 3.17-rc3
...
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Linus Torvalds [Fri, 5 Sep 2014 15:04:29 +0000 (08:04 -0700)]
Merge tag 'gpio-v3.17-3' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
- some documentation sync
- resource leak in the bt8xx driver
- again fix the way varargs are used to handle the optional flags on
the gpiod_* accessors. Now hopefully nailed the entire problem.
* tag 'gpio-v3.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: move varargs hack outside #ifdef GPIOLIB
gpio: bt8xx: fix release of managed resources
Documentation: gpio: documentation for optional getters functions
Linus Torvalds [Fri, 5 Sep 2014 14:37:15 +0000 (07:37 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
- i915 fixes: a few display regressions
- vmwgfx: possible loop forever fix
- nouveau: one userspace interface fix
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau/core: don't leak oclass type bits to user
drm/i915: Fix lock dropping in intel_tv_detect()
drm/i915: handle G45/GM45 pulse detection connected state.
drm/vmwgfx: Fix a potential infinite spin waiting for fifo idle
drm/vmwgfx: Fix an incorrect OOM return value
drm/i915: Remove bogus __init annotation from DMI callbacks
drm/i915: don't warn if backlight unexpectedly enabled
drm/i915: Move intel_ddi_set_vc_payload_alloc(false) to haswell_crtc_disable()
drm/i915: fix plane/cursor handling when runtime suspended
drm/i915: Ignore VBT backlight presence check on Acer C720 (4005U)
Rafael J. Wysocki [Fri, 5 Sep 2014 13:29:56 +0000 (15:29 +0200)]
Merge branches 'pm-sleep', 'powercap', 'pm-domains' and 'pm-cpufreq'
* pm-sleep:
PM / sleep: Fix test_suspend= command line option
* powercap:
powercap / RAPL: change domain detection message
powercap / RAPL: add support for CPU model 0x3f
* pm-domains:
PM / domains: Make generic_pm_domain.name const
* pm-cpufreq:
cpufreq: intel_pstate: Remove unneeded variable
Rafael J. Wysocki [Fri, 5 Sep 2014 13:29:12 +0000 (15:29 +0200)]
Merge branches 'acpi-video' and 'acpi-ec'
* acpi-video:
ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC
ACPI / video: Add a disable_native_backlight quirk
ACPI / video: Fix use_native_backlight selection logic
* acpi-ec:
ACPI / EC: Add msi quirk for Clevo W350etq
Rafael J. Wysocki [Fri, 5 Sep 2014 13:28:23 +0000 (15:28 +0200)]
Merge branches 'acpica', 'acpi-processor' and 'acpi-scan'
* acpica:
ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.
* acpi-processor:
ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
* acpi-scan:
ACPI / scan: not cache _SUN value in struct acpi_device_pnp
Mark Brown [Fri, 5 Sep 2014 09:53:18 +0000 (10:53 +0100)]
Merge remote-tracking branches 'regulator/fix/doc' and 'regulator/fix/tps65090' into regulator-linus
Dave Airlie [Thu, 4 Sep 2014 23:27:33 +0000 (09:27 +1000)]
Merge branch 'linux-3.17' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
single fix for nouveau.
* 'linux-3.17' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau/core: don't leak oclass type bits to user
Ben Skeggs [Thu, 4 Sep 2014 23:01:21 +0000 (09:01 +1000)]
drm/nouveau/core: don't leak oclass type bits to user
Fixes not being able to init fence subsystem when multiple boards are
present.
Reported-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Linus Torvalds [Thu, 4 Sep 2014 23:08:55 +0000 (16:08 -0700)]
Merge git://git.kvack.org/~bcrl/aio-fixes
Pull aio bugfixes from Ben LaHaise:
"Two small fixes"
* git://git.kvack.org/~bcrl/aio-fixes:
aio: block exit_aio() until all context requests are completed
aio: add missing smp_rmb() in read_events_ring
Gu Zheng [Wed, 3 Sep 2014 09:45:44 +0000 (17:45 +0800)]
aio: block exit_aio() until all context requests are completed
It seems that exit_aio() also needs to wait for all iocbs to complete (like
io_destroy), but we missed the wait step in current implemention, so fix
it in the same way as we did in io_destroy.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Cc: stable@vger.kernel.org
Frederic Weisbecker [Wed, 13 Aug 2014 16:50:16 +0000 (18:50 +0200)]
nohz: Restore NMI safe local irq work for local nohz kick
The local nohz kick is currently used by perf which needs it to be
NMI-safe. Recent commit though (
7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9)
changed its implementation to fire the local kick using the remote kick
API. It was convenient to make the code more generic but the remote kick
isn't NMI-safe.
As a result:
WARNING: CPU: 3 PID: 18062 at kernel/irq_work.c:72 irq_work_queue_on+0x11e/0x140()
CPU: 3 PID: 18062 Comm: trinity-subchil Not tainted 3.16.0+ #34
0000000000000009 00000000903774d1 ffff880244e06c00 ffffffff9a7f1e37
0000000000000000 ffff880244e06c38 ffffffff9a0791dd ffff880244fce180
0000000000000003 ffff880244e06d58 ffff880244e06ef8 0000000000000000
Call Trace:
<NMI> [<
ffffffff9a7f1e37>] dump_stack+0x4e/0x7a
[<
ffffffff9a0791dd>] warn_slowpath_common+0x7d/0xa0
[<
ffffffff9a07930a>] warn_slowpath_null+0x1a/0x20
[<
ffffffff9a17ca1e>] irq_work_queue_on+0x11e/0x140
[<
ffffffff9a10a2c7>] tick_nohz_full_kick_cpu+0x57/0x90
[<
ffffffff9a186cd5>] __perf_event_overflow+0x275/0x350
[<
ffffffff9a184f80>] ? perf_event_task_disable+0xa0/0xa0
[<
ffffffff9a01a4cf>] ? x86_perf_event_set_period+0xbf/0x150
[<
ffffffff9a187934>] perf_event_overflow+0x14/0x20
[<
ffffffff9a020386>] intel_pmu_handle_irq+0x206/0x410
[<
ffffffff9a0b54d3>] ? arch_vtime_task_switch+0x63/0x130
[<
ffffffff9a01937b>] perf_event_nmi_handler+0x2b/0x50
[<
ffffffff9a007b72>] nmi_handle+0xd2/0x390
[<
ffffffff9a007aa5>] ? nmi_handle+0x5/0x390
[<
ffffffff9a0d131b>] ? lock_release+0xab/0x330
[<
ffffffff9a008062>] default_do_nmi+0x72/0x1c0
[<
ffffffff9a0c925f>] ? cpuacct_account_field+0xcf/0x200
[<
ffffffff9a008268>] do_nmi+0xb8/0x100
Lets fix this by restoring the use of local irq work for the nohz local
kick.
Reported-by: Catalin Iacob <iacobcatalin@gmail.com>
Reported-and-tested-by: Dave Jones <davej@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Arnd Bergmann [Thu, 4 Sep 2014 19:51:05 +0000 (21:51 +0200)]
Merge tag 'davinci-fixes-for-v3.17-rc4' of git://git./linux/kernel/git/nsekhar/linux-davinci into fixes
This patch fixes setup of second EDMA channel controller
on DA850.
* tag 'davinci-fixes-for-v3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: edma: Fix configuration parsing for SoCs with multiple eDMA3 CC
Lokesh Vutla [Thu, 4 Sep 2014 13:23:28 +0000 (08:23 -0500)]
ARM: dts: dra7-evm: Add vtt regulator support
DRA7 evm REV G and later boards uses a vtt regulator for DDR3
termination and this is controlled by gpio7_11. This gpio is
configured in boot loader. gpio7_11, which is only available only on
Pad A22, in previous boards, is connected only to an unused pad on
expansion connector EXP_P3 and is safe to be muxed as GPIO on all
DRA7-evm versions (without a need to spin off another dts file).
Since gpio7_11 is used to control VTT and should not be reset or kept
in idle state during boot up else VTT will be disconnected and DDR
gets corrupted. So, as part of this change, mark gpio7 as no-reset and
no-idle on init.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Nishanth Menon [Thu, 4 Sep 2014 13:33:37 +0000 (08:33 -0500)]
ARM: dts: dra7-evm: Fix spi1 mux documentation
While auditing the various pin ctrl configurations using the following
command:
grep PIN_ arch/arm/boot/dts/dra7-evm.dts|(while read line;
do
v=`echo "$line" | sed -e "s/\s\s*/|/g" | cut -d '|' -f1 |
cut -d 'x' -f2|tr [a-z] [A-Z]`;
HEX=`echo "obase=16;ibase=16;
4A003400+$v"| bc`;
echo "$HEX ===> $line";
done)
against DRA75x/74x NDA TRM revision S(SPRUHI2S August 2014),
documentation errors were found for spi1 pinctrl. Fix the same.
Fixes:
6e58b8f1daaf1af ("ARM: dts: DRA7: Add the dts files for dra7 SoC and dra7-evm board")
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 2 Sep 2014 13:57:07 +0000 (16:57 +0300)]
ARM: dts: am43x-epos-evm: Disable QSPI to prevent conflict with GPMC-NAND
Both QSPI and GPMC-NAND share the same Pin (A8) from the SoC for Chip Select
functionality. So both can't be enabled simultaneously.
Disable QSPI node to prevent the pin conflict as well as
be similar to 3.12 release.
CC: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 2 Sep 2014 13:57:06 +0000 (16:57 +0300)]
ARM: OMAP2+: gpmc: Don't complain if wait pin is used without r/w monitoring
For NAND read & write wait pin monitoring must be kept disabled as the
wait pin is only used to indicate NAND device ready status and not to
extend each read/write cycle.
So don't print a warning if wait pin is specified while read/write
monitoring is not in the device tree.
Sanity check wait pin number irrespective if read/write monitoring is
set or not.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 2 Sep 2014 13:57:05 +0000 (16:57 +0300)]
ARM: dts: am43xx-epos-evm: Don't use read/write wait monitoring
NAND uses wait pin only to indicate device readiness after
a block/page operation. It is not use to extend individual
read/write cycle and so read/write wait pin monitoring must
be disabled for NAND.
Add gpmc wait pin information as the NAND uses wait pin 0
for device ready indication.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 2 Sep 2014 13:57:04 +0000 (16:57 +0300)]
ARM: dts: am437x-gp-evm: Don't use read/write wait monitoring
NAND uses wait pin only to indicate device readiness after
a block/page operation. It is not use to extend individual
read/write cycle and so read/write wait pin monitoring must
be disabled for NAND.
This patch also gets rid of the below warning when NAND is
accessed for the first time.
omap_l3_noc
44000000.ocp: L3 application error: target 13 mod:1 (unclearable)
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 2 Sep 2014 13:57:03 +0000 (16:57 +0300)]
ARM: dts: am437x-gp-evm: Use BCH16 ECC scheme instead of BCH8
am437x-gp-evm uses a NAND chip with page size 4096 bytes
and spare area of 225 bytes per page.
For such a setup it is preferrable to use BCH16 ECC scheme over
BCH8. This also makes it compatible with ROM code ECC scheme so
we can boot with NAND after flashing from kernel.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Tue, 2 Sep 2014 13:57:02 +0000 (16:57 +0300)]
ARM: dts: am43x-epos-evm: Use BCH16 ECC scheme instead of BCH8
am43x-epos-evm uses a NAND chip with page size 4096 bytes
and spare area of 225 bytes per page.
For such a setup it is preferrable to use BCH16 ECC scheme over
BCH8. This also makes it compatible with ROM code ECC scheme so
we can boot with NAND after flashing from kernel.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Sergei Shtylyov [Sat, 23 Aug 2014 20:44:09 +0000 (00:44 +0400)]
Revert "i2c: rcar: remove spinlock"
This reverts commit
150b8be3cda54412ad7b54f5392b513b25c0aaa7.
The I2C core's per-adapter locks can't protect from IRQs, so the driver still
needs a spinlock to protect the register accesses.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: stable@vger.kernel.org # 3.16+
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Linus Torvalds [Thu, 4 Sep 2014 16:43:54 +0000 (09:43 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon bugfix from Guenter Roeck:
"Fix a bug in the ds1621 driver"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (ds1621) Update zbits after conversion rate change
Linus Torvalds [Thu, 4 Sep 2014 16:37:51 +0000 (09:37 -0700)]
Merge tag 'platform-drivers-x86-v3.17-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform drivers fixes from Darren Hart:
"This is my first pull request since taking on maintenance for the
platform-drivers-x86 tree from Matthew Garrett. These have passed my
build testing and been run through Fengguang's LKP tests. Due to
timing this round, these have not spent any time in linux-next. I
have asked Stephen to include my for-next branch in linux-next going
forward, once he's back from vacation.
Details from tag:
- toshiba_acpi: re-enable hotkeys and cleanups
- ideapad-laptop: revert touchpad disable, and cleanup static/const
usage
- MAINTAINERS: update platform-drivers-x86 maintainer and tree"
* tag 'platform-drivers-x86-v3.17-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
toshiba_acpi: fix and cleanup toshiba_kbd_bl_mode_store()
platform/x86: toshiba: re-enable acpi hotkeys after suspend to disk
ideapad-laptop: Constify DMI table for real!
Revert "ideapad-laptop: Disable touchpad interface on Yoga models"
MAINTAINERS: Update platform-drivers-x86 maintainer and tree
Linus Torvalds [Thu, 4 Sep 2014 15:49:06 +0000 (08:49 -0700)]
Merge tag 'sound-3.17-rc4' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This time it contains a bunch of small ASoC fixes that slipped from in
previous updates, in addition to the usual HD-audio fixes and the
regression fixes for FireWire updates in 3.17.
All commits are reasonably small fixes"
* tag 'sound-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix COEF setups for ALC1150 codec
ASoC: simple-card: Fix bug of wrong decrement DT node's refcount
ALSA: hda - Fix digital mic on Acer Aspire 3830TG
ASoC: omap-twl4030: Fix typo in 2nd dai link's platform_name
ALSA: firewire-lib/dice: add arrangements of PCM pointer and interrupts for Dice quirk
ALSA: dice: fix wrong channel mappping at higher sampling rate
ASoC: cs4265: Fix setting of functional mode and clock divider
ASoC: cs4265: Fix clock rates in clock map table
ASoC: rt5677: correct mismatch widget name
ASoC: rt5640: Do not allow regmap to use bulk read-write operations
ASoC: tegra: Fix typo in include guard
ASoC: da732x: Fix typo in include guard
ASoC: core: fix .info for SND_SOC_BYTES_TLV
ASoC: rcar: Use && instead of & for boolean expressions
ASoC: Use dev_set_name() instead of init_name
ASoC: axi: Fix ADI AXI SPDIF specification
Dave Airlie [Thu, 4 Sep 2014 01:20:00 +0000 (11:20 +1000)]
Merge tag 'drm-intel-fixes-2014-09-03' of git://anongit.freedesktop.org/drm-intel into drm-fixes
here's a couple of display regression fixes for 3.17.
* tag 'drm-intel-fixes-2014-09-03' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix lock dropping in intel_tv_detect()
drm/i915: handle G45/GM45 pulse detection connected state.
Linus Torvalds [Thu, 4 Sep 2014 00:26:12 +0000 (17:26 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov:
"A fix for MT breakage, enhancement to Elantech PS/2 driver and a
couple of assorted fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elantech - add support for trackpoint found on some v3 models
Input: elantech - reset the device when elantech probe fails
Input: ALPS - suppress message about 'Unknown touchpad'
Input: fix used slots detection breakage
Input: sparc - i8042-sparcio.h: fix unused kbd_res warning
Input: atmel_mxt_ts - improve description of gpio-keymap property
Linus Torvalds [Thu, 4 Sep 2014 00:24:58 +0000 (17:24 -0700)]
Merge tag 'regmap-v3.17-rc1' of git://git./linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"Several bug fixes for issues that have been lurking for a while:
- Check that devices haven't set the flag saying they only support
register at a time operation while we're doing cache syncs,
otherwise we fail to restore caches
- Ensure that we don't mark all registers on devices using
format_write() as cacheable, avoiding adding a cache of things like
reset registers which we don't want to rewrite during cache sync
- Make sure we create the debugfs files in the correct directory"
* tag 'regmap-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Don't attempt block writes when syncing cache on single_rw devices
regmap: Fix handling of volatile registers for format_write() chips
regmap: Fix regcache debugfs initialization
Felipe Balbi [Wed, 3 Sep 2014 21:22:24 +0000 (16:22 -0500)]
ARM: dts: am4372: fix USB regs size
Size should be 64KiB instead of 92KiB.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Nishanth Menon [Wed, 3 Sep 2014 18:46:21 +0000 (13:46 -0500)]
ARM: dts: am437x-gp: switch i2c0 to 100KHz
On the GP EVM, the ambient light sensor is limited to 100KHz on the
I2C bus.
So use 100kHz for I2C on the GP EVM due to this limitation on the
ambient light sensor.
Reported-by: Aparna Balasubramanian <aparnab@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tony Lindgren [Wed, 3 Sep 2014 21:39:51 +0000 (14:39 -0700)]
Merge branch 'for-v3.17-rc/ti-clk-dt' of github.com:t-kristo/linux-pm into fixes-rc3
Roger Quadros [Wed, 3 Sep 2014 11:17:32 +0000 (14:17 +0300)]
ARM: dts: dra7-evm: Fix 8th NAND partition's name
The 8th NAND partition should be named "NAND.u-boot-env.backup1"
instead of "NAND.u-boot-env". This is to be consistent with other
TI boards as well as u-boot.
CC: Pekon Gupta <pekon@pek-sem.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Roger Quadros [Wed, 3 Sep 2014 11:17:31 +0000 (14:17 +0300)]
ARM: dts: dra7-evm: Fix i2c3 pinmux and frequency
The I2C3 pins are taken from pads E21 (GPIO6_14) and
F20 (GPIO6_15). Use the right pinmux register and mode.
Also set the I2C3 bus frequency to a safer 400KHz than
3.4Mhz.
CC: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Jiri Kosina [Wed, 3 Sep 2014 13:04:28 +0000 (15:04 +0200)]
ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
There is a following AB-BA dependency between cpu_hotplug.lock and
cpuidle_lock:
1) cpu_hotplug.lock -> cpuidle_lock
enable_nonboot_cpus()
_cpu_up()
cpu_hotplug_begin()
LOCK(cpu_hotplug.lock)
cpu_notify()
...
acpi_processor_hotplug()
cpuidle_pause_and_lock()
LOCK(cpuidle_lock)
2) cpuidle_lock -> cpu_hotplug.lock
acpi_os_execute_deferred() workqueue
...
acpi_processor_cst_has_changed()
cpuidle_pause_and_lock()
LOCK(cpuidle_lock)
get_online_cpus()
LOCK(cpu_hotplug.lock)
Fix this by reversing the order acpi_processor_cst_has_changed() does
thigs -- let it first execute the protection against CPU hotplug by
calling get_online_cpus() and obtain the cpuidle lock only after that (and
perform the symmentric change when allowing CPUs hotplug again and
dropping cpuidle lock).
Spotted by lockdep.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>