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11 years agoMerge commit 'd293875' into mvebu/boards
Jason Cooper [Thu, 31 Jan 2013 17:39:01 +0000 (17:39 +0000)]
Merge commit 'd293875' into mvebu/boards

Pulled in mmc/mmc-next up to:

d293875 mmc: mvsdio: add pinctrl integration

11 years agoMerge tag 'tags/drivers_for_v3.9' into mvebu/boards
Jason Cooper [Thu, 31 Jan 2013 17:38:48 +0000 (17:38 +0000)]
Merge tag 'tags/drivers_for_v3.9' into mvebu/boards

mvebu drivers for v3.9
 - use rtc-mv in mvebu armv7 SoCs
 - add pci-e hotplug for kirkwood

Depends on:
 - tags/mvebu_fixes_for_v3.8-rc6

11 years agoMerge tag 'tags/cleanup_for_v3.9_round2' into mvebu/boards
Jason Cooper [Thu, 31 Jan 2013 17:38:38 +0000 (17:38 +0000)]
Merge tag 'tags/cleanup_for_v3.9_round2' into mvebu/boards

cleanup for v3.9 round2
 - remove unneeded #includes for mach-dove
 - remove unneeded #includes and code for the nsa310

11 years agoMerge tag 'tags/mvebu_fixes_for_v3.8-rc6' into mvebu/boards
Jason Cooper [Thu, 31 Jan 2013 17:38:25 +0000 (17:38 +0000)]
Merge tag 'tags/mvebu_fixes_for_v3.8-rc6' into mvebu/boards

fixes for v3.8-rc6

 - add missing gpio interrupt lines to dove dt
 - fix bad logic for printing MPP error message on orion boards
 - build proper serial port driver after changing mvebu DT compatible property
   - This is a change to mvebu_defconfig that I wouldn't usually push out as a
     fix.  However, the commit

     b24212f arm: mvebu: Use dw-apb-uart instead of ns16650 as UART driver

     changed the serial driver for the board in the dts file.  without the patch
     I've included in this pull, users won't see any log messages.

11 years agocpuidle: kirkwood: Move out of mach directory
Andrew Lunn [Wed, 9 Jan 2013 12:22:15 +0000 (13:22 +0100)]
cpuidle: kirkwood: Move out of mach directory

Move the Kirkwood cpuidle driver out of arch/arm/mach-kirkwood and
into drivers/cpuidle. Convert the driver into a platform driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoARM: dove: cleanup includes
Sebastian Hesselbarth [Tue, 29 Jan 2013 21:23:09 +0000 (22:23 +0100)]
ARM: dove: cleanup includes

This patch cleans unneccessary includes and reorders the remaining
includes in common dove code.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoARM: kirkwood: nsa310: cleanup includes and unneeded code
Jason Cooper [Wed, 23 Jan 2013 19:58:21 +0000 (19:58 +0000)]
ARM: kirkwood: nsa310: cleanup includes and unneeded code

After removing the unneeded linux/i2c.h, linux/of.h was needed for
of_machine_is_compatible().  i2c.h had included of.h.

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agortc: Add support of rtc-mv for MVEBU SoCs
Gregory CLEMENT [Wed, 12 Dec 2012 09:06:23 +0000 (10:06 +0100)]
rtc: Add support of rtc-mv for MVEBU SoCs

The Armada 370 and Armada XP Socs have the same controller that the
one used in the orion platforms. This patch enables the selection of
rtc-mv with mvebu platforms.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoARM: Kirkwood: Support basic hotplug for PCI-E
Jason Gunthorpe [Wed, 21 Nov 2012 18:25:28 +0000 (11:25 -0700)]
ARM: Kirkwood: Support basic hotplug for PCI-E

Unconditionally register the PCI-E bus, even if the link is currently
down. When the link is brought up the bus can be scanned through
/sys/bus/pci/rescan or otherwise. Since the HW has no interrupt for
link up, userspace will have to take care of the timing.

An earlier version of this was contingent on CONFIG_HOTPLUG, but
that is being removed from the kernel.

This also fixes printing the link up/down message to be displayed
on one line (structured logging broke this?)

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoMerge tag 'tags/mvebu_fixes_for_v3.8-rc6' into mvebu/drivers
Jason Cooper [Wed, 30 Jan 2013 20:12:25 +0000 (20:12 +0000)]
Merge tag 'tags/mvebu_fixes_for_v3.8-rc6' into mvebu/drivers

fixes for v3.8-rc6

 - add missing gpio interrupt lines to dove dt
 - fix bad logic for printing MPP error message on orion boards
 - build proper serial port driver after changing mvebu DT compatible property
   - This is a change to mvebu_defconfig that I wouldn't usually push out as a
     fix.  However, the commit

     b24212f arm: mvebu: Use dw-apb-uart instead of ns16650 as UART driver

     changed the serial driver for the board in the dts file.  without the patch
     I've included in this pull, users won't see any log messages.

11 years agommc: mvsdio: add pinctrl integration
Chris Ball [Mon, 28 Jan 2013 11:26:53 +0000 (06:26 -0500)]
mmc: mvsdio: add pinctrl integration

On many Marvell SoCs, the pins used for the SDIO interface are part of
the MPP pins, that are muxable pins. In order to get the muxing of
those pins correct, this commit integrates the mvsdio driver with the
pinctrl infrastructure by calling devm_pinctrl_get_select_default()
during ->probe().

Note that we permit this function to fail because not all Marvell
platforms have yet been fully converted to using the pinctrl
infrastructure.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: mvsdio: implement a Device Tree binding
Thomas Petazzoni [Wed, 16 Jan 2013 13:13:59 +0000 (14:13 +0100)]
mmc: mvsdio: implement a Device Tree binding

This patch adds a simple Device Tree binding for the mvsdio driver, as
well as the necessary documentation for it. Compatibility with non-DT
platforms is preserved, by keeping the platform_data based
initialization.

We introduce a small difference between non-DT and DT platforms: DT
platforms are required to provide a clocks = <...> property, which the
driver uses to get the frequency of the clock that goes to the SDIO
IP. The behaviour on non-DT platforms is kept unchanged: a clock
reference is not mandatory, but the clock frequency must be passed in
the "clock" field of the mvsdio_platform_data structure.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: mvsdio: use slot-gpio for card detect gpio
Thomas Petazzoni [Wed, 16 Jan 2013 13:13:58 +0000 (14:13 +0100)]
mmc: mvsdio: use slot-gpio for card detect gpio

The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice
set of helper functions to simplify the management of the card detect
GPIO in MMC host drivers. This patch migrates the mvsdio driver to
using those helpers, which will make the ->probe() code simpler, and
therefore ease the process of adding a Device Tree binding for this
driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: mvsdio: use slot-gpio infrastructure for write protect gpio
Thomas Petazzoni [Wed, 16 Jan 2013 13:13:57 +0000 (14:13 +0100)]
mmc: mvsdio: use slot-gpio infrastructure for write protect gpio

The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice
set of helper functions to simplify the management of the write
protect GPIO in MMC host drivers. This patch migrates the mvsdio
driver to using those helpers, which will make the ->probe() code
simpler, and therefore ease the process of adding a Device Tree
binding for this driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci-esdhc-imx: remove ESDHC_CD_GPIO handling from IO accessory
Shawn Guo [Tue, 15 Jan 2013 15:19:54 +0000 (23:19 +0800)]
mmc: sdhci-esdhc-imx: remove ESDHC_CD_GPIO handling from IO accessory

With commit 9444e07 (mmc: remove unncessary mmc_gpio_free_cd() call from
slot-gpio users) in place, the ESDHC_CD_GPIO handling in IO accessories
becomes unnecessary.  Remove it.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci: introduce sdhci_update_clock helper to re-enable clock
Andy Shevchenko [Mon, 7 Jan 2013 14:31:08 +0000 (16:31 +0200)]
mmc: sdhci: introduce sdhci_update_clock helper to re-enable clock

There are three places where same piece of code is used. Let's split it
to a separate function.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci-pxav3: add IRQ wake up support
Kevin Liu [Mon, 14 Jan 2013 19:38:53 +0000 (14:38 -0500)]
mmc: sdhci-pxav3: add IRQ wake up support

[cjb: The MMP3 architecture requires a registered interrupt to retire wfi
when waking from suspend.]

Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci: add IRQ wake up support
Kevin Liu [Sat, 5 Jan 2013 09:21:33 +0000 (17:21 +0800)]
mmc: sdhci: add IRQ wake up support

Don't disable SD Host IRQ during suspend if it is wake up source.
Enable wakeup event during suspend.

Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci: disable interrupt before free_irq
Kevin Liu [Sat, 5 Jan 2013 09:18:28 +0000 (17:18 +0800)]
mmc: sdhci: disable interrupt before free_irq

Current code missed disabling interrupts before free irq which is shared.

Notice below comments for function free_irq (kernel/irq/manage.c):
On a shared IRQ the caller must ensure the interrupt is disabled
on the card it drives before calling this function.

Original code has below issue during suspend/resume when multiple SD
hosts share the same IRQ:
1. Assume there are two hosts (host1 for emmc while host2 for sd) share
the same mmc irq.
2. When system suspend, host2 will be suspended before host1.
So the sequence is below:
step1: irq handler for host2 removed ->
step2: irq handler for host1 removed and irq disabled ->
... system suspended ...
... system resumed ...
step3: irq enabled and the irq handler for host1 restored ->
step4: irq handler for host2 restored
3. So there is the buggy time slot that the irq is enabled but the irq
handler for host2 is removed. Then host2 interrupt can be triggered
but can't be handled at that moment.

Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: add BCM2835 driver
Stephen Warren [Thu, 3 Jan 2013 05:34:49 +0000 (22:34 -0700)]
mmc: add BCM2835 driver

Add a very simple driver for the BCM2835 SoC, which is used in the
Raspberry Pi board.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: fix async request mechanism for sequential read scenarios
Konstantin Dorfman [Mon, 14 Jan 2013 19:28:17 +0000 (14:28 -0500)]
mmc: fix async request mechanism for sequential read scenarios

When current request is running on the bus and if next request fetched
by mmcqd is NULL, mmc context (mmcqd thread) gets blocked until the
current request completes. This means that if new request comes in while
the mmcqd thread is blocked, this new request can not be prepared in
parallel to current ongoing request. This may result in delaying the new
request execution and increase it's latency.

This change allows to wake up the MMC thread on new request arrival.
Now once the MMC thread is woken up, a new request can be fetched and
prepared in parallel to the current running request which means this new
request can be started immediately after the current running request
completes.

With this change read throughput is improved by 16%.

Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Reviewed-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: queue: exclude asynchronous transfer for special request
Seungwon Jeon [Wed, 26 Dec 2012 01:40:17 +0000 (10:40 +0900)]
mmc: queue: exclude asynchronous transfer for special request

Unlike normal r/w request, special requests(discard, flush)
is finished with a one-time issue_fn. Request change to
mqrq_prev makes unnecessary call.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: simplify IRQ processing
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:45:14 +0000 (15:45 +0100)]
mmc: sh-mmcif: simplify IRQ processing

The classical way to process IRQs is read out the status, ack all triggered
IRQs, possibly mask them, then process them. Follow this simple procesure
instead of the current complex custom algorithm.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: report all errors
Teppei Kamijou [Wed, 12 Dec 2012 14:38:18 +0000 (15:38 +0100)]
mmc: sh-mmcif: report all errors

Make error reporting in the driver more verbose. This patch is based on
an earlier work by Teppei Kamijou, but we try to not add any new error
messages to the log in the normal case to avoid confusing the user, and
also add a few more dev_dbg() calls.

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
[g.liakhovetski@gmx.de: avoid producing new errors in normal case]
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: fix I/O errors
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:38:17 +0000 (15:38 +0100)]
mmc: sh-mmcif: fix I/O errors

The INT_BUFWEN IRQ often arrives with other bits set too. If they are not
cleared, an additional IRQ can be triggered, sometimes also after the MMC
request has already been completed. This leads to block I/O errors. Earlier
Teppei Kamijou also observed these additional interrupts and proposed to
explicitly wait for them. This patch chooses an alternative approach of
clearing all active bits immediately, when processing the main interrupt.

Reported-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: reset DMA completion immediately before starting DMA
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:38:16 +0000 (15:38 +0100)]
mmc: sh-mmcif: reset DMA completion immediately before starting DMA

DMA completion can be signalled from the DMA callback and from the error
handler. If both are called, the completion struct can enter an
inconsistent state. To prevent this move completion initialisation
immediately before activating DMA.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: reset error code for any opcode
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:38:15 +0000 (15:38 +0100)]
mmc: sh-mmcif: reset error code for any opcode

If a command execution has produced an error, it has to be reset as a part
of the error handling.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: fix a race, causing an Oops on SMP
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:38:14 +0000 (15:38 +0100)]
mmc: sh-mmcif: fix a race, causing an Oops on SMP

Oopses have been observed on SMP in the sh-mmcif IRQ thread, when the two
IRQ threads run simultaneously on two CPUs. Also take care to guard the
timeout work and the DMA completion callback from possible NULL-pointer
dereferences and races.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: (cosmetic) simplify boolean return blocks
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:38:13 +0000 (15:38 +0100)]
mmc: sh-mmcif: (cosmetic) simplify boolean return blocks

Use "return condition" instead of "if (condition) return true; return false"
in functions, returning bool.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: Terminate DMA transactions when detecting timeout or error
Teppei Kamijou [Wed, 12 Dec 2012 14:38:12 +0000 (15:38 +0100)]
mmc: sh-mmcif: Terminate DMA transactions when detecting timeout or error

If a DMA transaction fails, terminate all outstanding DMA transfers and
unmap buffers.

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
[g.liakhovetski@gmx.de: forward-port, add dma_unmap_sg() in error cases]
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh-mmcif: fix missing and consolidate IO completion timeouts
Guennadi Liakhovetski [Wed, 12 Dec 2012 14:38:11 +0000 (15:38 +0100)]
mmc: sh-mmcif: fix missing and consolidate IO completion timeouts

Read block and write block operations are currently missing completion
timeouts. Add missing timeouts and consolidate them at one location.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh_mmcif: Avoid unnecessary mmc_delay() at mmc_card_sleepawake()
Teppei Kamijou [Wed, 12 Dec 2012 14:38:10 +0000 (15:38 +0100)]
mmc: sh_mmcif: Avoid unnecessary mmc_delay() at mmc_card_sleepawake()

SH/R-Mobile MMCIF host controller can wait while the card signals busy.
Set MMC_CAP_WAIT_WHILE_BUSY to inform an upper layer (core/mmc_ops.c)
not to insert unnecessary mmc_delay().

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh_mmcif: Use msecs_to_jiffies() for host->timeout
Teppei Kamijou [Wed, 12 Dec 2012 14:38:09 +0000 (15:38 +0100)]
mmc: sh_mmcif: Use msecs_to_jiffies() for host->timeout

Timeout period should be properly normalized using msecs_to_jiffies().

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh_mmcif: Add support for eMMC Dual Data Rate
Teppei Kamijou [Wed, 12 Dec 2012 14:38:08 +0000 (15:38 +0100)]
mmc: sh_mmcif: Add support for eMMC Dual Data Rate

Some MMCIF implementations support the Dual Data Rate. With this patch,
platforms can set the MMC_CAP_UHS_DDR50 capability flag in MMCIF platform
data. This will let the MMC core to actually use the DDR mode.

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh_mmcif: add support for bundled MMCIF IRQs
Shinya Kuribayashi [Mon, 14 Jan 2013 19:12:36 +0000 (14:12 -0500)]
mmc: sh_mmcif: add support for bundled MMCIF IRQs

On newer SoCs like R-Mobile U2, MMCIF interrupts are bundled.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh_mmcif: ensure run-time suspend call is processed before suspend
Teppei Kamijou [Wed, 12 Dec 2012 14:38:06 +0000 (15:38 +0100)]
mmc: sh_mmcif: ensure run-time suspend call is processed before suspend

With this post-v2.6.35 change applied:

commit a0a1a5fd4fb15ec61117c759fe9f5c16c53d9e9c
Author: Tejun Heo <tj@kernel.org>
Date:   Tue Jun 29 10:07:12 2010 +0200
    workqueue: reimplement workqueue freeze using max_active

freeze_workqueues_begin() was introduced and workqueue now gets frozen
before device drivers suspend operations.

We have to ensure that run-time PM suspend operation completes before
system-wide suspend is started.

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sh_mmcif: force to fail CMD52 immediately
Teppei Kamijou [Wed, 12 Dec 2012 14:38:05 +0000 (15:38 +0100)]
mmc: sh_mmcif: force to fail CMD52 immediately

mmc_rescan() sends CMD52 (SD_IO_RW_DIRECT) to reset SDIO card during
card detection. CMD52 should be ignored by SD/eMMC cards, but we can
also abort it in the driver immediately, since MMCIF doesn't support
SDIO cards anyway.

Signed-off-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com>
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci-esdhc-imx: use slot-gpio helpers for CD and WP
Shawn Guo [Tue, 11 Dec 2012 14:32:20 +0000 (22:32 +0800)]
mmc: sdhci-esdhc-imx: use slot-gpio helpers for CD and WP

Use slot-gpio helpers to save some code in the driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: remove unncessary mmc_gpio_free_cd() call from slot-gpio users
Shawn Guo [Tue, 11 Dec 2012 14:32:19 +0000 (22:32 +0800)]
mmc: remove unncessary mmc_gpio_free_cd() call from slot-gpio users

Since slot-gpio uses devm_* managed functions in mmc_gpio_request_cd()
now, we can remove those mmc_gpio_free_cd() call from host drivers'
.probe() error path and .remove().

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: slot-gpio: use devm_* managed functions to ease users
Shawn Guo [Tue, 11 Dec 2012 14:32:18 +0000 (22:32 +0800)]
mmc: slot-gpio: use devm_* managed functions to ease users

Use devm_* managed functions, so that slot-gpio users do not have to
call mmc_gpio_free_ro/cd to free up resources requested in
mmc_gpio_request_ro/cd.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdhci: query card presence from cd-gpio before asking SDHCI
Shawn Guo [Tue, 11 Dec 2012 07:23:42 +0000 (15:23 +0800)]
mmc: sdhci: query card presence from cd-gpio before asking SDHCI

Call mmc_gpio_get_cd() to query card presence from cd-gpio before
asking SDHCI.  The rationale behind this change is that flag
SDHCI_QUIRK_BROKEN_CARD_DETECTION is designed for SDHCI controller to
tell that SDHCI_PRESENT_STATE is broken, and it should be used for this
case only.  So when cd-gpio is being used, the controller should set
the flag to tell that SDHCI_PRESENT_STATE is not available.

However, the existing code will skip checking cd-gpio as long as flag
SDHCI_QUIRK_BROKEN_CARD_DETECTION is set.  Change the querying order
between cd-gpio and SDHCI to support the rationale above.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdio: print correct UHS mode during card detection
Subhash Jadavani [Tue, 4 Dec 2012 11:36:20 +0000 (17:06 +0530)]
mmc: sdio: print correct UHS mode during card detection

When SDIO3.0 card is detected, incorrect bus speed mode
is printed as part of card detection print in kernel logs.

This change fixes it so that user won't be confused by
looking at incorrect card detection message in logs.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Tested-by: Jackey Shen <Jackey.Shen@amd.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdio: Fix SDIO 3.0 UHS-I initialization sequence
Sujit Reddy Thumma [Tue, 4 Dec 2012 11:36:19 +0000 (17:06 +0530)]
mmc: sdio: Fix SDIO 3.0 UHS-I initialization sequence

According to UHS-I initialization sequence for SDIO 3.0 cards,
the host must set bit[24] (S18R) of OCR register during OCR
handshake to know whether the SDIO card is capable of doing
1.8V I/O.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Johan Rudholm <johan.rudholm@stericsson.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agommc: sdio: fix resume failure due to lack of CMD52 reset
Subhash Jadavani [Tue, 4 Dec 2012 11:36:18 +0000 (17:06 +0530)]
mmc: sdio: fix resume failure due to lack of CMD52 reset

If SDIO keep power flag (MMC_PM_KEEP_POWER) is not set, card would
be reinitialized during resume but as we are not resetting
(CMD52 reset) the SDIO card during this reinitialization, card may
fail to respond back to subsequent commands (CMD5 etc...).

This change resets the card before the reinitialization of card
during resume.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
11 years agoLinux 3.8-rc5 v3.8-rc5
Linus Torvalds [Fri, 25 Jan 2013 19:57:28 +0000 (11:57 -0800)]
Linux 3.8-rc5

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Fri, 25 Jan 2013 18:55:21 +0000 (10:55 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "It turns out that we had two crc bugs when running fsx-linux in a
  loop.  Many thanks to Josef, Miao Xie, and Dave Sterba for nailing it
  all down.  Miao also has a new OOM fix in this v2 pull as well.

  Ilya fixed a regression Liu Bo found in the balance ioctls for pausing
  and resuming a running balance across drives.

  Josef's orphan truncate patch fixes an obscure corruption we'd see
  during xfstests.

  Arne's patches address problems with subvolume quotas.  If the user
  destroys quota groups incorrectly the FS will refuse to mount.

  The rest are smaller fixes and plugs for memory leaks."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (30 commits)
  Btrfs: fix repeated delalloc work allocation
  Btrfs: fix wrong max device number for single profile
  Btrfs: fix missed transaction->aborted check
  Btrfs: Add ACCESS_ONCE() to transaction->abort accesses
  Btrfs: put csums on the right ordered extent
  Btrfs: use right range to find checksum for compressed extents
  Btrfs: fix panic when recovering tree log
  Btrfs: do not allow logged extents to be merged or removed
  Btrfs: fix a regression in balance usage filter
  Btrfs: prevent qgroup destroy when there are still relations
  Btrfs: ignore orphan qgroup relations
  Btrfs: reorder locks and sanity checks in btrfs_ioctl_defrag
  Btrfs: fix unlock order in btrfs_ioctl_rm_dev
  Btrfs: fix unlock order in btrfs_ioctl_resize
  Btrfs: fix "mutually exclusive op is running" error code
  Btrfs: bring back balance pause/resume logic
  btrfs: update timestamps on truncate()
  btrfs: fix btrfs_cont_expand() freeing IS_ERR em
  Btrfs: fix a bug when llseek for delalloc bytes behind prealloc extents
  Btrfs: fix off-by-one in lseek
  ...

11 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 25 Jan 2013 03:15:43 +0000 (19:15 -0800)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Two small cifs fixes"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  fs/cifs/cifs_dfs_ref.c: fix potential memory leakage
  cifs: fix srcip_matches() for ipv6

11 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 25 Jan 2013 03:14:22 +0000 (19:14 -0800)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixlet from Marcelo Tosatti.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Emulate dcbf

11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Thu, 24 Jan 2013 20:44:57 +0000 (12:44 -0800)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "A number of fixes:

  Patrik found a problem with preempt counting in the VFP assembly
  functions which can cause the preempt count to be upset.

  Nicolas fixed a problem with the parsing of the DT when it straddles a
  1MB boundary.

  Subhash Jadavani reported a problem with sparsemem and our highmem
  support for cache maintanence for DMA areas, and TI found a bug in
  their strongly ordered memory mapping type.

  Also, three fixes by way of Will Deacon's tree from Dave Martin for
  instruction compatibility and Marc Zyngier to fix hypervisor boot mode
  issues."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7629/1: mm: Fix missing XN flag for for MT_MEMORY_SO
  ARM: DMA: Fix struct page iterator in dma_cache_maint() to work with sparsemem
  ARM: 7628/1: head.S: map one extra section for the ATAG/DTB area
  ARM: 7627/1: Predicate preempt logic on PREEMP_COUNT not PREEMPT alone
  ARM: virt: simplify __hyp_stub_install epilog
  ARM: virt: boot secondary CPUs through the right entry point
  ARM: virt: Avoid bx instruction for compatibility with <=ARMv4

11 years agoMerge tag 'fixes-for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Thu, 24 Jan 2013 20:42:50 +0000 (12:42 -0800)]
Merge tag 'fixes-for-linus2' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Here's a long-pending fixes pull request for arm-soc (I didn't send
  one in the -rc4 cycle).

  The larger deltas are from:

   - A fixup of error paths in the mvsdio driver

   - Header file move for a driver that hadn't been properly converted
     to multiplatform on i.MX, which was causing build failures when
     included

   - Device tree updates for at91 dealing mostly with their new pinctrl
     setup merged in 3.8 and mistakes in those initial configs

  The rest are the normal mix of small fixes all over the place; sunxi,
  omap, imx, mvebu, etc, etc."

* tag 'fixes-for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (40 commits)
  mfd: vexpress-sysreg: Don't skip initialization on probe
  ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
  ARM: vexpress: extend the MPIDR range used for pen release check
  ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
  ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
  ARM: at91/at91_dt_defconfig: remove memory specification to cmdline
  ARM: at91/dts: add macb mii pinctrl config for kizbox
  ARM: at91: rm9200: remake the BGA as default version
  ARM: at91: fix gpios on i2c-gpio for RM9200 DT
  ARM: at91/at91sam9x5 DTS: add SCK USART pins
  ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
  ARM: at91/at91-pinctrl documentation: fix typo and add some details
  ARM: kirkwood: fix missing #interrupt-cells property
  mmc: mvsdio: use devm_ API to simplify/correct error paths.
  clk: mvebu/clk-cpu.c: fix memory leakage
  ARM: OMAP2+: omap4-panda: add UART2 muxing for WiLink shared transport
  ARM: OMAP2+: DT node Timer iteration fix
  ARM: OMAP2+: Fix section warning for omap_init_ocp2scp()
  ARM: OMAP2+: fix build break for omapdrm
  ARM: OMAP2: Fix missing omap2xxx_clkt_vps_late_init function calls
  ...

11 years agoMerge tag 'pm+acpi-for-3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 24 Jan 2013 18:19:13 +0000 (10:19 -0800)]
Merge tag 'pm+acpi-for-3.8-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - Two cpuidle initialization fixes from Konrad Rzeszutek Wilk.

 - cpufreq regression fixes for AMD processors from Borislav Petkov,
   Stefan Bader, and Matthew Garrett.

 - ACPI cpufreq fix from Thomas Schlichter.

 - cpufreq and devfreq fixes related to incorrect usage of operating
   performance points (OPP) framework and RCU from Nishanth Menon.

 - APEI workaround for incorrect BIOS information from Lans Zhang.

* tag 'pm+acpi-for-3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: Add module aliases for acpi-cpufreq
  ACPI: Check MSR valid bit before using P-state frequencies
  PM / devfreq: exynos4_bus: honor RCU lock usage
  PM / devfreq: add locking documentation for recommended_opp
  cpufreq: cpufreq-cpu0: use RCU locks around usage of OPP
  cpufreq: OMAP: use RCU locks around usage of OPP
  ACPI, APEI: Fixup incorrect 64-bit access width firmware bug
  ACPI / processor: Get power info before updating the C-states
  powernow-k8: Add a kconfig dependency on acpi-cpufreq
  ACPI / cpuidle: Fix NULL pointer issues when cpuidle is disabled
  intel_idle: Don't register CPU notifier if we are not running.

11 years agoMerge tag 'regmap-fix-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broon...
Linus Torvalds [Thu, 24 Jan 2013 18:18:37 +0000 (10:18 -0800)]
Merge tag 'regmap-fix-3.8-rc4' of git://git./linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "One more oversight in the debugfs code was reported and fixed, plus a
  documentation fix."

* tag 'regmap-fix-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: fix small typo in regmap_bulk_write comment
  regmap: debugfs: Fix seeking from the cache

11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Thu, 24 Jan 2013 18:17:49 +0000 (10:17 -0800)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "A few fixes on slave dmanengine.  There are trivial fixes in imx-dma,
  tegra-dma & ioat driver"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: tegra: implement flags parameters for cyclic transfer
  dmaengine: imx-dma: Disable use of hw_chain to fix sg_dma transfers.
  ioat: Fix DMA memory sync direction correct flag

11 years agoMerge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux
Linus Torvalds [Thu, 24 Jan 2013 18:17:03 +0000 (10:17 -0800)]
Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux

Pill i2c fixes from Wolfram Sang:
 "Here are a few, typical driver fixes for the I2C subsystem"

* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
  i2c-designware: add missing MODULE_LICENSE
  i2c: omap: fix draining irq handling
  i2c: omap: errata i462: fix incorrect ack for arbitration lost interrupt
  i2c: muxes: fix wrong use of sizeof(ptr)
  i2c: sirf: register i2c_client from dt child-nodes in probe entry
  i2c: mxs: Fix type of error code
  i2c: mxs: Fix misuse init_completion

11 years agoBtrfs: fix repeated delalloc work allocation
Miao Xie [Tue, 22 Jan 2013 10:49:00 +0000 (10:49 +0000)]
Btrfs: fix repeated delalloc work allocation

btrfs_start_delalloc_inodes() locks the delalloc_inodes list, fetches the
first inode, unlocks the list, triggers btrfs_alloc_delalloc_work/
btrfs_queue_worker for this inode, and then it locks the list, checks the
head of the list again. But because we don't delete the first inode that it
deals with before, it will fetch the same inode. As a result, this function
allocates a huge amount of btrfs_delalloc_work structures, and OOM happens.

Fix this problem by splice this delalloc list.

Reported-by: Alex Lyakas <alex.btrfs@zadarastorage.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: fix wrong max device number for single profile
Miao Xie [Wed, 16 Jan 2013 11:27:17 +0000 (11:27 +0000)]
Btrfs: fix wrong max device number for single profile

The max device number of single profile is 1, not 0 (0 means 'as many as
possible'). Fix it.

Cc: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: fix missed transaction->aborted check
Miao Xie [Tue, 15 Jan 2013 06:29:12 +0000 (06:29 +0000)]
Btrfs: fix missed transaction->aborted check

First, though the current transaction->aborted check can stop the commit early
and avoid unnecessary operations, it is too early, and some transaction handles
don't end, those handles may set transaction->aborted after the check.

Second, when we commit the transaction, we will wake up some worker threads to
flush the space cache and inode cache. Those threads also allocate some transaction
handles and may set transaction->aborted if some serious error happens.

So we need more check for ->aborted when committing the transaction. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: Add ACCESS_ONCE() to transaction->abort accesses
Miao Xie [Tue, 15 Jan 2013 06:27:25 +0000 (06:27 +0000)]
Btrfs: Add ACCESS_ONCE() to transaction->abort accesses

We may access and update transaction->aborted on the different CPUs without
lock, so we need ACCESS_ONCE() wrapper to prevent the compiler from creating
unsolicited accesses and make sure we can get the right value.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: put csums on the right ordered extent
Josef Bacik [Tue, 22 Jan 2013 20:43:09 +0000 (15:43 -0500)]
Btrfs: put csums on the right ordered extent

I noticed a WARN_ON going off when adding csums because we were going over
the amount of csum bytes that should have been allowed for an ordered
extent.  This is a leftover from when we used to hold the csums privately
for direct io, but now we use the normal ordered sum stuff so we need to
make sure and check if we've moved on to another extent so that the csums
are added to the right extent.  Without this we could end up with csums for
bytenrs that don't have extents to cover them yet.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: use right range to find checksum for compressed extents
Liu Bo [Sun, 6 Jan 2013 03:38:22 +0000 (03:38 +0000)]
Btrfs: use right range to find checksum for compressed extents

For compressed extents, the range of checksum is covered by disk length,
and the disk length is different with ram length, so we need to use disk
length instead to get us the right checksum.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: fix panic when recovering tree log
Josef Bacik [Tue, 18 Dec 2012 16:39:19 +0000 (11:39 -0500)]
Btrfs: fix panic when recovering tree log

A user reported a BUG_ON(ret) that occured during tree log replay.  Ret was
-EAGAIN, so what I think happened is that we removed an extent that covered
a bitmap entry and an extent entry.  We remove the part from the bitmap and
return -EAGAIN and then search for the next piece we want to remove, which
happens to be an entire extent entry, so we just free the sucker and return.
The problem is ret is still set to -EAGAIN so we trip the BUG_ON().  The
user used btrfs-zero-log so I'm not 100% sure this is what happened so I've
added a WARN_ON() to catch the other possibility.  Thanks,

Reported-by: Jan Steffens <jan.steffens@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoBtrfs: do not allow logged extents to be merged or removed
Josef Bacik [Thu, 24 Jan 2013 17:02:07 +0000 (12:02 -0500)]
Btrfs: do not allow logged extents to be merged or removed

We drop the extent map tree lock while we're logging extents, so somebody
could come in and merge another extent into this one and screw up our
logging, or they could even remove us from the list which would keep us from
logging the extent or freeing our ref on it, so we need to make sure to not
clear LOGGING until after the extent is logged, and then we can merge it to
adjacent extents.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
11 years agoMerge branch 'vexpress/fixes' of git://git.linaro.org/people/pawelmoll/linux into...
Olof Johansson [Thu, 24 Jan 2013 16:12:24 +0000 (08:12 -0800)]
Merge branch 'vexpress/fixes' of git://git.linaro.org/people/pawelmoll/linux into fixes

From Pawel Moll:
- makes the V2P-CA15_A7 (a.k.a. TC2) work with 3.8 kernels
- improves vexpress-sysreg.c behaviour on arm64 platforms

* 'vexpress/fixes' of git://git.linaro.org/people/pawelmoll/linux:
  mfd: vexpress-sysreg: Don't skip initialization on probe
  ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
  ARM: vexpress: extend the MPIDR range used for pen release check

11 years agoMerge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
Olof Johansson [Thu, 24 Jan 2013 15:49:49 +0000 (07:49 -0800)]
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes

From Nicolas Ferre:
Here are fixes for AT91 that are mainly related to device tree.
One RM9200 setup option is the only C code change.
Some documentation changes can clarify the pinctrl use.
Then, some defconfig modifications are allowing the affected platforms
to boot.

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
  ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
  ARM: at91/at91_dt_defconfig: remove memory specification to cmdline
  ARM: at91/dts: add macb mii pinctrl config for kizbox
  ARM: at91: rm9200: remake the BGA as default version
  ARM: at91: fix gpios on i2c-gpio for RM9200 DT
  ARM: at91/at91sam9x5 DTS: add SCK USART pins
  ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
  ARM: at91/at91-pinctrl documentation: fix typo and add some details

11 years agomfd: vexpress-sysreg: Don't skip initialization on probe
Pawel Moll [Tue, 27 Nov 2012 16:48:50 +0000 (16:48 +0000)]
mfd: vexpress-sysreg: Don't skip initialization on probe

The vexpress-sysreg driver does not have to be initialized
early, when the platform doesn't require this. Unfortunately
in such case it wasn't initialized correctly - master site
lookup and config bridge registration were missing. Fixed now.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
11 years agoARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
Pawel Moll [Thu, 24 Jan 2013 11:48:54 +0000 (11:48 +0000)]
ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree

As the kernel is able to cope with multiple clusters,
uncomment the A7 cores in the Device Tree for V2P-CA15_A7
tile, making all 5 cores available to the user.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
11 years agoARM: vexpress: extend the MPIDR range used for pen release check
Lorenzo Pieralisi [Tue, 22 Jan 2013 10:56:40 +0000 (10:56 +0000)]
ARM: vexpress: extend the MPIDR range used for pen release check

In ARM multi-cluster systems the MPIDR affinity level 0 cannot be used as a
single cpu identifier, affinity levels 1 and 2 must be taken into account as
well.
This patch extends the MPIDR usage to affinity levels 1 and 2 in versatile
secondary cores start up code in order to compare the passed pen_release
value with the full-blown affinity mask.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
11 years agoMerge remote-tracking branch 'regmap/fix/debugfs' into tmp
Mark Brown [Thu, 24 Jan 2013 11:04:16 +0000 (19:04 +0800)]
Merge remote-tracking branch 'regmap/fix/debugfs' into tmp

11 years agoMerge tag 'imx-fixes-3.8-3' of git://git.linaro.org/people/shawnguo/linux-2.6 into...
Olof Johansson [Thu, 24 Jan 2013 04:35:02 +0000 (20:35 -0800)]
Merge tag 'imx-fixes-3.8-3' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo:

This is yet another critical imxfb fixes held off by absence of FB
maintainer for some time.

* tag 'imx-fixes-3.8-3' of git://git.linaro.org/people/shawnguo/linux-2.6:
  video: imxfb: Do not crash on reboot

11 years agoMerge tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux...
Olof Johansson [Thu, 24 Jan 2013 04:30:52 +0000 (20:30 -0800)]
Merge tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper:

mvebu fixes for v3.8-rc5
 - fix memory leak in mvebu/clk-cpu.c
 - use devm_ to correct/simplify error paths in mvsdio
 - add missing #interrupt-cells property in kirkwood

* tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux:
  ARM: kirkwood: fix missing #interrupt-cells property
  mmc: mvsdio: use devm_ API to simplify/correct error paths.
  clk: mvebu/clk-cpu.c: fix memory leakage

11 years agoMerge tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Thu, 24 Jan 2013 04:11:35 +0000 (20:11 -0800)]
Merge tag 'usb-3.8-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull more USB fixes from Greg Kroah-Hartman:
 "Here are some more USB fixes for the 3.8-rc4 tree.

  Some gadget driver fixes, and finally resolved the ehci-mxc driver
  build issues (it's just some code moving around and being deleted)."

* tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: EHCI: fix build error in ehci-mxc
  USB: EHCI: add a name for the platform-private field
  USB: EHCI: fix incorrect configuration test
  USB: EHCI: Move definition of EHCI_STATS to ehci.h
  USB: UHCI: fix IRQ race during initialization
  usb: gadget: FunctionFS: Fix missing braces in parse_opts
  usb: dwc3: gadget: fix ep->maxburst for ep0
  ARM: i.MX clock: Change the connection-id for fsl-usb2-udc
  usb: gadget: fsl_mxc_udc: replace MX35_IO_ADDRESS to ioremap
  usb: gadget: fsl-mxc-udc: replace cpu_is_xxx() with platform_device_id
  usb: musb: cppi_dma: drop '__init' annotation

11 years agoMerge tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Thu, 24 Jan 2013 04:10:48 +0000 (20:10 -0800)]
Merge tag 'char-misc-3.8-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull drivers/misc fix from Greg Kroah-Hartman:
 "Here is a single revert for the ti-st misc driver, fixing problem that
  was introduced in 3.7-rc1 that has been bothering people."

* tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Revert "drivers/misc/ti-st: remove gpio handling"

11 years agoMerge tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Thu, 24 Jan 2013 04:09:58 +0000 (20:09 -0800)]
Merge tag 'tty-3.8-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull a TTY maintainer patch from Greg Kroah-Hartman:
 "Just a MAINTAINERS update, now that Alan has left for a bit, I'll
  continue to watch over the serial drivers."

* tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  MAINTAINERS: Someone needs to watch over the serial drivers

11 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Thu, 24 Jan 2013 04:07:12 +0000 (20:07 -0800)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 - gspca: add needed delay for I2C traffic for sonixb/sonixj cameras
 - gspca: add one missing Kinect USB ID
 - usbvideo: some regression fixes
 - omap3isp: fix some build issues
 - videobuf2: fix video output handling
 - exynos s5p/m5mols: a few regression fixes.

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures
  [media] uvcvideo: Cleanup leftovers of partial revert
  [media] uvcvideo: Return -EACCES when trying to set a read-only control
  [media] omap3isp: Don't include <plat/cpu.h>
  [media] s5p-mfc: Fix interrupt error handling routine
  [media] s5p-fimc: Fix return value of __fimc_md_create_flite_source_links()
  [media] m5mols: Fix typo in get_fmt callback
  [media] v4l: vb2: Set data_offset to 0 for single-plane output buffers
  [media] [FOR,v3.8] omap3isp: Don't include deleted OMAP plat/ header files
  [media] gspca_sonixj: Add a small delay after i2c_w1
  [media] gspca_sonixb: Properly wait between i2c writes
  [media] gspca_kinect: add Kinect for Windows USB id

11 years agoMAINTAINERS: Someone needs to watch over the serial drivers
Greg Kroah-Hartman [Wed, 23 Jan 2013 23:45:23 +0000 (15:45 -0800)]
MAINTAINERS: Someone needs to watch over the serial drivers

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Wed, 23 Jan 2013 21:31:15 +0000 (13:31 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixes from Geert Uytterhoeven:
 "The asm-generic changeset has been ack'ed by Arnd."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Wire up finit_module
  asm-generic/dma-mapping-broken.h: Provide dma_alloc_attrs()/dma_free_attrs()
  m68k: Provide dma_alloc_attrs()/dma_free_attrs()

11 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas...
Linus Torvalds [Wed, 23 Jan 2013 21:28:17 +0000 (13:28 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/cmarinas/linux-aarch64

Pull arm64 fixes from Catalin Marinas:
 - ELF coredump fix (more registers dumped than what user space expects)
 - SUBARCH name generation (s/aarch64/arm64/)

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
  arm64: makefile: fix uname munging when setting ARCH on native machine
  arm64: elf: fix core dumping to match what glibc expects

11 years agoUSB: EHCI: fix build error in ehci-mxc
Alan Stern [Wed, 23 Jan 2013 18:26:15 +0000 (13:26 -0500)]
USB: EHCI: fix build error in ehci-mxc

This patch (as1643b) fixes a build error in ehci-hcd when compiling for
ARM with allmodconfig:

drivers/usb/host/ehci-hcd.c:1285:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1255:0: note: this is the location of the previous definition
drivers/usb/host/ehci-mxc.c:280:31: warning: 'ehci_mxc_driver' defined but not used [-Wunused-variable]
drivers/usb/host/ehci-hcd.c:1285:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1255:0: note: this is the location of the previous definition

The fix is to convert ehci-mxc over to the new "ehci-hcd is a library"
scheme so that it can coexist peacefully with the ehci-platform
driver.  As part of the conversion the ehci_mxc_priv data structure,
which was allocated dynamically, is now placed where it belongs: in
the private area at the end of struct ehci_hcd.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoMerge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Wed, 23 Jan 2013 17:42:46 +0000 (09:42 -0800)]
Merge tag 'sound-3.8' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Only a few small HD-audio fixes:
   - Addition of new Conexant codec IDs
   - Two one-liners to add fixups for Realtek codecs
   - A last-minute regression fix for auto-mute with power-saving mode
     (regressed since 3.8-rc1)"

* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix inconsistent pin states after resume
  ALSA: hda - Add Conexant CX20755/20756/20757 codec IDs
  ALSA: hda - Add fixup for Acer AO725 laptop
  ALSA: hda - Fix mute led for another HP machine

11 years agoMAINTAINERS: remove me
Alan Cox [Wed, 23 Jan 2013 14:38:16 +0000 (14:38 +0000)]
MAINTAINERS: remove me

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoALSA: hda - Fix inconsistent pin states after resume
Takashi Iwai [Wed, 23 Jan 2013 14:58:40 +0000 (15:58 +0100)]
ALSA: hda - Fix inconsistent pin states after resume

The commit [26a6cb6c: ALSA: hda - Implement a poll loop for jacks as a
module parameter] introduced the polling jack detection code, but it
also moved the call of snd_hda_jack_set_dirty_all() in the resume path
after resume/init ops call.  This caused a regression when the jack
state has been changed during power-down (e.g. in the power save
mode).  Since the driver doesn't probe the new jack state but keeps
using the cached value due to no dirty flag, the pin state remains
also as if the jack is still plugged.

The fix is simply moving snd_hda_jack_set_dirty_all() to the original
position.

Reported-by: Manolo Díaz <diaz.manolo@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
11 years agoarm: mvebu: i2c come back in defconfig
Gregory CLEMENT [Wed, 23 Jan 2013 14:57:59 +0000 (15:57 +0100)]
arm: mvebu: i2c come back in defconfig

When the patch "arm: mvebu: Use dw-apb-uart instead of ns16650 as UART
driver" was applied to a git tree and became the commit b24212fbfba25
it wrongly removed the i2c support. This patch reintroduce it.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoarm: plat-orion: fix printing of "MPP config unavailable on this hardware"
Gerlando Falauto [Wed, 23 Jan 2013 13:50:59 +0000 (14:50 +0100)]
arm: plat-orion: fix printing of "MPP config unavailable on this hardware"

refactored printing of the kernel warning:

"orion_mpp_conf: requested MPP%u config unavailable on this hardware\n"

which is not to be printed in case of variant_mask = 0 (unknown variant).
This check should be performed using a logical AND (&&) as opposed
to a bitwise AND (&).

Otherwise, test would fail (and message would not be printed) if
variant_mask != 1

Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Olof Johansson <olof@lixom.net>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Holger Brunck <holger.brunck@keymile.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoDove: activate GPIO interrupts in DT
Jean-Francois Moine [Wed, 23 Jan 2013 08:38:16 +0000 (09:38 +0100)]
Dove: activate GPIO interrupts in DT

In a DT, the interrupts of an interrupt-controller are not usable when
#interrupt-cells is missing.

This patch activates the interrupts of the GPIOs 0 and 1 for the Marvell
Dove SoC.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
Douglas Gilbert [Wed, 23 Jan 2013 08:50:02 +0000 (09:50 +0100)]
ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii

Concerning pinctrl_macb0_rmii_mii, values were okay, but not comments.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
Nicolas Ferre [Wed, 23 Jan 2013 09:06:46 +0000 (10:06 +0100)]
ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig

Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91_dt_defconfig: remove memory specification to cmdline
Nicolas Ferre [Wed, 23 Jan 2013 09:03:23 +0000 (10:03 +0100)]
ARM: at91/at91_dt_defconfig: remove memory specification to cmdline

No need for this cmdline option as we are using DT.
Moreover this defconfig is targeted to multiple SoC/boards: this option
was nonsense.

Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/dts: add macb mii pinctrl config for kizbox
Boris BREZILLON [Thu, 13 Dec 2012 14:03:08 +0000 (14:03 +0000)]
ARM: at91/dts: add macb mii pinctrl config for kizbox

This patch overrides default macb pinctrl config defined in
at91sam9260.dtsi (pinctrl_macb_rmii) with kizbox board config
(pinctrl_macb_rmii + pinctrl_macb_rmii_mii_alt).

Signed-off-by: Boris BREZILLON <linux-arm@overkiz.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91: rm9200: remake the BGA as default version
Jean-Christophe PLAGNIOL-VILLARD [Sun, 23 Dec 2012 18:07:49 +0000 (18:07 +0000)]
ARM: at91: rm9200: remake the BGA as default version

Make BGA as the default version as we are supposed to just have
to specify when we use the PQFP version.

Issue was existing since commit:
3e90772 (ARM: at91: fix at91rm9200 soc subtype handling).

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org> [v3.3]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91: fix gpios on i2c-gpio for RM9200 DT
Joachim Eastwood [Tue, 4 Dec 2012 18:10:56 +0000 (18:10 +0000)]
ARM: at91: fix gpios on i2c-gpio for RM9200 DT

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91sam9x5 DTS: add SCK USART pins
Richard Genoud [Fri, 18 Jan 2013 16:42:28 +0000 (16:42 +0000)]
ARM: at91/at91sam9x5 DTS: add SCK USART pins

The SCK pins where missing in usarts pinctrl.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
Richard Genoud [Fri, 18 Jan 2013 16:41:21 +0000 (16:41 +0000)]
ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts

The PIN_BANK 3 is for PDxx pins, not PCxx pins.
And PIN_BANK 1 is for PBxx, not PIN_BANK 0.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agoARM: at91/at91-pinctrl documentation: fix typo and add some details
Richard Genoud [Fri, 18 Jan 2013 16:38:43 +0000 (16:38 +0000)]
ARM: at91/at91-pinctrl documentation: fix typo and add some details

The relation between PIN_BANK numbers and pio letters wasn't made very
clear.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
11 years agofs/cifs/cifs_dfs_ref.c: fix potential memory leakage
Cong Ding [Wed, 23 Jan 2013 00:20:58 +0000 (19:20 -0500)]
fs/cifs/cifs_dfs_ref.c: fix potential memory leakage

When it goes to error through line 144, the memory allocated to *devname is
not freed, and the caller doesn't free it either in line 250. So we free the
memroy of *devname in function cifs_compose_mount_options() when it goes to
error.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
CC: stable <stable@kernel.org>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
11 years agoRevert "drivers/misc/ti-st: remove gpio handling"
Luciano Coelho [Mon, 21 Jan 2013 11:12:42 +0000 (13:12 +0200)]
Revert "drivers/misc/ti-st: remove gpio handling"

This reverts commit eccf2979b2c034b516e01b8a104c3739f7ef07d1.

The reason is that it broke TI WiLink shared transport on Panda.
Also, callback functions should not be added to board files anymore,
so revert to implementing the power functions in the driver itself.

Additionally, changed a variable name ('status' to 'err') so that this
revert compiles properly.

Cc: stable <stable@vger.kernel.org> [3.7]
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoARM: kirkwood: fix missing #interrupt-cells property
Sebastian Hesselbarth [Tue, 22 Jan 2013 19:46:33 +0000 (20:46 +0100)]
ARM: kirkwood: fix missing #interrupt-cells property

The gpio controller on kirkwood can provide interrupts but is missing
the #interrupt-cells property. This patch just adds it to both gpio
controllers.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agommc: mvsdio: use devm_ API to simplify/correct error paths.
Andrew Lunn [Wed, 16 Jan 2013 13:13:56 +0000 (14:13 +0100)]
mmc: mvsdio: use devm_ API to simplify/correct error paths.

There are a number of bugs in the error paths of this driver.  Make
use of devm_ functions to simplify the cleanup on error.

Based on a patch by Russell King.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoclk: mvebu/clk-cpu.c: fix memory leakage
Cong Ding [Tue, 15 Jan 2013 18:44:26 +0000 (19:44 +0100)]
clk: mvebu/clk-cpu.c: fix memory leakage

the variable cpuclk and clk_name should be properly freed when error happens.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
11 years agoMerge tag '3.8-pci-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Linus Torvalds [Wed, 23 Jan 2013 00:36:23 +0000 (16:36 -0800)]
Merge tag '3.8-pci-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "The most important is a fix for a pciehp deadlock that occurs when
  unplugging a Thunderbolt adapter.  We also applied the same fix to
  shpchp, removed CONFIG_EXPERIMENTAL dependencies, fixed a
  pcie_aspm=force problem, and fixed a refcount leak.

  Details:

   - Hotplug
      PCI: pciehp: Use per-slot workqueues to avoid deadlock
      PCI: shpchp: Make shpchp_wq non-ordered
      PCI: shpchp: Handle push button event asynchronously
      PCI: shpchp: Use per-slot workqueues to avoid deadlock

   - Power management
      PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported

   - Misc
      PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
      PCI: remove depends on CONFIG_EXPERIMENTAL"

* tag '3.8-pci-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: remove depends on CONFIG_EXPERIMENTAL
  PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported
  PCI: shpchp: Use per-slot workqueues to avoid deadlock
  PCI: shpchp: Handle push button event asynchronously
  PCI: shpchp: Make shpchp_wq non-ordered
  PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
  PCI: pciehp: Use per-slot workqueues to avoid deadlock

11 years agoasync: fix __lowest_in_progress()
Tejun Heo [Wed, 23 Jan 2013 00:15:15 +0000 (16:15 -0800)]
async: fix __lowest_in_progress()

Commit 083b804c4d3e ("async: use workqueue for worker pool") made it
possible that async jobs are moved from pending to running out-of-order.
While pending async jobs will be queued and dispatched for execution in
the same order, nothing guarantees they'll enter "1) move self to the
running queue" of async_run_entry_fn() in the same order.

Before the conversion, async implemented its own worker pool.  An async
worker, upon being woken up, fetches the first item from the pending
list, which kept the executing lists sorted.  The conversion to
workqueue was done by adding work_struct to each async_entry and async
just schedules the work item.  The queueing and dispatching of such work
items are still in order but now each worker thread is associated with a
specific async_entry and moves that specific async_entry to the
executing list.  So, depending on which worker reaches that point
earlier, which is non-deterministic, we may end up moving an async_entry
with larger cookie before one with smaller one.

This broke __lowest_in_progress().  running->domain may not be properly
sorted and is not guaranteed to contain lower cookies than pending list
when not empty.  Fix it by ensuring sort-inserting to the running list
and always looking at both pending and running when trying to determine
the lowest cookie.

Over time, the async synchronization implementation became quite messy.
We better restructure it such that each async_entry is linked to two
lists - one global and one per domain - and not move it when execution
starts.  There's no reason to distinguish pending and running.  They
behave the same for synchronization purposes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>