Commit graph

313792 commits

Author SHA1 Message Date
Benjamin Herrenschmidt
8bf8385b9c powerpc: Fixup oddity in entry_32.S
When I "fixed" the CONFIG_TRACE_IRQFLAGS case on interrupt entry,
I screwed up a little bit with the test for user space vs. kernel.

The code is fine, there's just some dead code around it. I basically
removed the test and always create the added stack frame whether
coming from user or kernel since in any case we do need to save
a bunch of volatile registers or bad things would happen (we can
take page faults in the kernel for example).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-07-11 14:18:33 +10:00
Stuart Yoder
9778b696a0 powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-07-11 14:18:22 +10:00
Lauri Hintsala
1ad0ceacb4 ARM: apx4devkit: add pin muxing for GPIOs
Some pins are used as GPIOs in user space.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 12:17:33 +08:00
Lauri Hintsala
78771f05c8 ARM: apx4devkit: remove AUART3
AUART3 is not available anymore. Pins are used as GPIOs.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 12:17:28 +08:00
Lauri Hintsala
557763b31c ARM: apx4devkit: add SSP2 support
Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 12:17:22 +08:00
Lauri Hintsala
1eb73ca0b5 ARM: apx4devkit: fix the bus-width of SSP0 to 4 bits
Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 12:17:16 +08:00
Lauri Hintsala
d8bb823d31 ARM: apx4devkit: add display support
Add HannStar display and device tree configuration.

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 12:17:10 +08:00
Lauri Hintsala
3317d99e44 ARM: apx4devkit: add NAND support
Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 12:17:01 +08:00
Shawn Guo
841730e743 ARM: mxs: add dtb-y target into Makefile.boot
Add dtb-y target into Makefile.boot, so that "make ARCH=arm dtbs" can
build out all the dtbs listed there.  It's very useful for build-testing
all the <board>.dts when imx28.dtsi changes.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:50:13 +08:00
Shawn Guo
dd852aa521 ARM: mxs: convert stmp378x_devb board to device tree
The enc28j60 spi device does not get converted to dts file, because
there is no mxs spi driver on mainline so far.  The enc28j60 spi
in mach-stmp378x_devb.c does not work anyway.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:50:06 +08:00
Shawn Guo
e1a4d18f6c ARM: mxs: convert tx28 board to device tree
FEC support is missing because we need to find a proper way to rewrite
tx28_add_fec0 for device tree boot.

Cc: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:49:59 +08:00
Shawn Guo
3143bbb42b ARM: mxs: convert apx4devkit board to device tree
Tested-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:49:50 +08:00
Marek Vasut
8fa62e1128 ARM: mxs: convert m28evk board to device tree
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:49:41 +08:00
Shawn Guo
3dba259673 ARM: dts: imx28: move lcdif control pins into board dts
The presence and muxing of lcdif control pins can vary much on different
boards.  Move them into imx28-evk.dts to make lcdif_24bit_pins_a only
about data pins, so that it can be reused by other boards.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:49:34 +08:00
Shawn Guo
daefb6961c ARM: dts: imx28: move extra gpmi-nand pins into board dts
Only pins GPMI_CE0N and GPMI_READY0 are generally used by other boards.
Move GPMI_CE1N and GPMI_READY1 into imx28-evk.dts to make gpmi_pins_a
more general, and can be used by other boards.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-07-11 11:49:28 +08:00
Chris Ball
ed3efc1ccc mmc: dt: Add reg/interrupts to mmc.txt for clarity.
Even though these aren't parsed by the MMC driver, make clear that
they're required by the OF core.  (Also, a few typo fixes.)

Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:07 -04:00
Chris Ball
4efafee02f mmc: dt: Deduplicate binding docs by referencing mmc.txt
Now that we have common bindings for MMC, rewrite the individual
bindings to inherit from mmc.txt and describe their differences.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:06 -04:00
Chris Ball
45a6b32e24 mmc: core: Export regulator_* functions as GPL
The regulator API functions we're wrapping are exported as GPL, so our
wrappers for the same functions should be too.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:06 -04:00
Subhash Jadavani
ecf8b5d0a3 mmc: block: replace __blk_end_request() with blk_end_request()
For completing any block request, MMC block driver is calling:
	spin_lock_irq(queue)
	__blk_end_request()
	spin_unlock_irq(queue)

But if we analyze the sources of latency in kernel using ftrace,
__blk_end_request() function at times may take up to 6.5ms with
spinlock held and irq disabled.

__blk_end_request() calls couple of functions and ftrace output
shows that blk_update_bidi_request() function is almost taking 6ms.
There are 2 function to end the current request: ___blk_end_request()
and blk_end_request(). Both these functions do same thing except
that blk_end_request() function doesn't take up the spinlock
while calling the blk_update_bidi_request().

This patch replaces all __blk_end_request() calls with
blk_end_request() and __blk_end_request_all() calls with
blk_end_request_all().

Testing done: 20 process concurrent read/write on sd card
and eMMC. Ran this test for almost a day on multicore system
and no errors observed.

This change is not meant for improving MMC throughput; it's basically
about becoming fair to other threads/interrupts in the system. By
holding spin lock and interrupts disabled for longer duration, we
won't allow other threads/interrupts to run at all.  Actually slight
performance degradation at file system level can be expected as we
are not holding the spin lock during blk_update_bidi_request() which
means our mmcqd thread may get preempted for other high priority
thread or any interrupt in the system.

These are performance numbers (100MB file write) with eMMC running
in DDR mode:

Without this patch:
	Name of the Test   Value   Unit
	LMDD Read Test     53.79   MBPS
	LMDD Write Test    18.86   MBPS
	IOZONE  Read Test  51.65   MBPS
	IOZONE  Write Test 24.36   MBPS

With this patch:
	Name of the Test    Value  Unit
	LMDD Read Test      52.94  MBPS
	LMDD Write Test     16.70  MBPS
	IOZONE  Read Test   52.08  MBPS
	IOZONE  Write Test  23.29  MBPS

Read numbers are fine. Write numbers are bit down (especially LMDD
write), may be because write requests normally have large transfer
size and which means there are chances that while mmcq is executing
blk_update_bidi_request(), it may get interrupted by interrupts or
other high priority thread.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:05 -04:00
Venkatraman S
6af9e96e05 mmc: core: Fix the HPI execution sequence
mmc_execute_hpi should send the HPI command only once, and only
if the card is in PRG state.

According to eMMC spec, the command's completion time is
not dependent on OUT_OF_INTERRUPT_TIME. Only the transition
out of PRG STATE is guarded by OUT_OF_INTERRUPT_TIME - which
is defined to begin at the end of sending the command itself.

Specify the default timeout for the actual sending of HPI
command, and then use OUT_OF_INTERRUPT_TIME to wait for
the transition out of PRG state.

Reported-by: Alex Lemberg <Alex.Lemberg@sandisk.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:04 -04:00
Guennadi Liakhovetski
fd0ea65d3e mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions
GPIOs can be used in MMC/SD-card slots not only for hotplug detection, but
also to implement the write-protection pin. Rename cd-gpio helpers to
slot-gpio to make addition of further slot GPIO functions possible.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:04 -04:00
Guennadi Liakhovetski
0f506a9669 mmc: tmio: use MMC opcode defines instead of numbers
mmc.h defines macros for most frequently used MMC opcodes. Use them instead
of hard-coded numbers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:03 -04:00
Guennadi Liakhovetski
623b51fc86 mmc: cd-gpio: pass IRQF_ONESHOT to request_threaded_irq()
Fix a boot regression on Mackerel boards with sh_mobile_sdhi
in existing kernels causing:

genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq XXX

caused by 1c6c6952 (genirq: Reject bogus threaded irq requests).

This is backported from Guennadi's patch:
"mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions"

Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:03:57 -04:00
Venkatraman S
87f761b6c0 mmc: core: Revert "skip card initialization if power class selection fails"
This reverts commit 3d93576e(skip card initialization if
power class selection fails).
Problem has been reported when this is used with eMMC4.41
card with Tegra Platform. Till the issue is root caused,
bus width selection failure should not be treated as fatal.

Reported-by: Marc Dietrich <marvin24@gmx.de>
Signed-Off-by: Venkatraman S <svenkatr@ti.com>
CC: Ulf Hansson <ulf.hansson@stericsson.com>
CC: Subhash Jadavani <subhashj@codeaurora.org>
CC: Saugata Das <saugata.das@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 22:47:13 -04:00
Jerry Snitselaar
bb39b6551e gpio/gpio-tps65910: gpio_chip.of_node referenced without CONFIG_OF_GPIO defined
commit 626f9914 added code to initialize gpio_chip.of_node, but if
CONFIG_OF_GPIO is not defined gps-tps65910 fails to build with an
error complaining gpio_chip has no member of_node. I ran into this
while doing a allyesconfig build on linux-next.

Signed-off-by: Gerard Snitselaar <dev@snitselaar.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-10 22:53:31 +02:00
Linus Torvalds
055c9fa887 GPIO fixes for v3.5:
- Invalid context restore on bank 0 for OMAP driver in
   runtime suspend/resume cycle
 - Check for NULL platform data in sta-2x11 driver
 - Constrain selection of the V1 MSM GPIO driver to applicable
   platforms (Kconfig issue)
 - Make sure the correct output value is set in the wm8994 driver
 - Export devm_gpio_request_one() so it can be used in modules.
   Apparently some in-kernel modules can be configured to use this
   leading to breakage.
 - Check that the GPIO is valid in the lantiq driver
 - Fix the flag bits introduced for v3.5, so they don't overlap
 - Fix a device tree intialization bug for imx21-compatible devices
 - Carry over the OF node to the TPS65910 GPIO chip struct
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Merge tag 'fixes-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Yes, this is a *LATE* GPIO pull request with fixes for v3.5.

  Grant moved across the planet and accidentally fell off the grid, so
  he asked me to take over the GPIO merges for a while 10 days ago.

  Since then I went over the archives and collected this pile of fixes,
  and pulled two of them from the TI maintainer Kevin Hilman.  Then
  waited for them to at least hit linux-next once or twice."

GPIO fixes for v3.5:
 - Invalid context restore on bank 0 for OMAP driver in runtime
   suspend/resume cycle
 - Check for NULL platform data in sta-2x11 driver
 - Constrain selection of the V1 MSM GPIO driver to applicable platforms
   (Kconfig issue)
 - Make sure the correct output value is set in the wm8994 driver
 - Export devm_gpio_request_one() so it can be used in modules.
   Apparently some in-kernel modules can be configured to use this
   leading to breakage.
 - Check that the GPIO is valid in the lantiq driver
 - Fix the flag bits introduced for v3.5, so they don't overlap
 - Fix a device tree intialization bug for imx21-compatible devices
 - Carry over the OF node to the TPS65910 GPIO chip struct

* tag 'fixes-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: tps65910: initialize of_node of gpio_chip
  gpio/mxc: make irqs work for fsl,imx21-gpio devices
  gpio: fix bits conflict for gpio flags
  mips: pci-lantiq: Fix check for valid gpio
  gpio: export devm_gpio_request_one
  gpiolib: wm8994: Pay attention to the value set when enabling as output
  gpio/msm_v1: CONFIG_GPIO_MSM_V1 is only available on three SoCs
  gpio-sta2x11: don't use pdata if null
  gpio/omap: fix invalid context restore of gpio bank-0
  gpio/omap: fix irq loss while in idle with debounce on
2012-07-10 13:24:48 -07:00
Linus Torvalds
310959e831 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
 "It looks like my rewrite of our lazy irq scheme is still exposing
  "interesting" issues left and right.  The previous fixes are now
  causing an occasional BUG_ON to trigger (which this patch turns into a
  WARN_ON while at it), due to another issue of disconnect of the lazy
  irq state vs the processor state in the idle loop on pseries and
  cell.

  This should fix it properly once for all moving the nasty code to a
  common helper function.

  There's also couple more fixes for some debug stuff that didn't build
  (and helped resolving those problems so it's worth having), along with
  a compile fix for newer gcc's."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  tty/hvc_opal: Fix debug function name
  powerpc/numa: Avoid stupid uninitialized warning from gcc
  powerpc: Fix build of some debug irq code
  powerpc: More fixes for lazy IRQ vs. idle
2012-07-10 13:06:05 -07:00
Jonathan Nieder
dc332fdf9f ACPI / PM: Leave Bus Master Arbitration enabled for suspend/resume
This is an old suspend/resume lockup fix:

	commit 2780cc4660e1
	Author: Len Brown <len.brown@intel.com>
	Date:   Thu Dec 23 13:43:30 2004 -0500

	    [ACPI] Fix suspend/resume lockup issue
	    by leaving Bus Master Arbitration enabled.
	    The ACPI spec mandates it be disabled only for C3.

	    http://bugzilla.kernel.org/show_bug.cgi?id=3599

	    Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
	    Signed-off-by: Len Brown <len.brown@intel.com>

The bug snuck back in in commit 2feec47d4c (ACPICA: ACPI 5: Support
for new FADT SleepStatus, SleepControl registers, 2012-02-14),
presumably by copy/pasting a copy of the code without that fix for the
legacy case.

On affected machines, after that commit, the machine locks up hard on
resume from suspend.  The same fix as seven years ago still works.

Addresses <https://bugzilla.kernel.org/show_bug.cgi?id=43641>.

Reported-bisected-and-tested-by: Octavio Alvarez <alvarezp@alvarezp.com>
Reported-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:50:59 +02:00
Linus Torvalds
bc51b0c22c Revert "of: match by compatible property first"
This reverts commit 107a84e61c.

Meelis Roos reports a regression since 3.5-rc5 that stops Sun Fire V100
and Sun Netra X1 sparc64 machines from booting, hanging after enabling
serial console.  He bisected it to commit 107a84e61c.

Rob Herring explains:
 "The problem is match combinations of compatible plus name and/or type
  fail to match correctly.  I have a fix for this, but given how late it
  is for 3.5 I think it is best to revert this for now.  There could be
  other cases that rely on the current although wrong behavior.  I will
  post an updated version for 3.6."

Bisected-and-reported-by: Meelis Roos <mroos@linux.ee>
Requested-by: Rob Herring <rob.herring@calxeda.com>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-10 12:49:32 -07:00
Sachin Kamat
8951ef0219 PM / Domains: Add missing static storage class specifier in domain.c file
Fixes the folloiwng sparse warning:
drivers/base/power/domain.c:149:5:
warning: symbol '__pm_genpd_poweron' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:47:07 +02:00
Rafael J. Wysocki
4f31f5b19e PM / crypto / ux500: Use struct dev_pm_ops for power management
Make the ux500 crypto driver define its PM callbacks through
struct dev_pm_ops objects rather than by using legacy PM hooks
in struct platform_driver.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
2012-07-10 21:37:33 +02:00
Rafael J. Wysocki
afec8a770a PM / IPMI: Remove empty legacy PCI PM callbacks
The legacy PM callbacks provided by the IPMI PCI driver are
empty routines returning 0, so they can be safely dropped.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Corey Minyard <cminyard@mvista.com>
2012-07-10 21:37:26 +02:00
Rafael J. Wysocki
ca9a2054fe tpm_nsc: Use struct dev_pm_ops for power management
Make the tpm_nsc driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.

This allows the driver to use tpm_pm_suspend() and tpm_pm_resume()
as its PM callbacks directly, without defining its own PM callback
routines.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:37:18 +02:00
Rafael J. Wysocki
b633f0507e tpm_tis: Use struct dev_pm_ops for power management
Make the tpm_tis driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.

This allows the driver to use tpm_pm_suspend() as its suspend
callback directly, without defining its own suspend callback
routine.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:37:11 +02:00
Rafael J. Wysocki
8324be0538 tpm_atmel: Use struct dev_pm_ops for power management
Make the tpm_atmel driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.

This allows the driver to use tpm_pm_suspend() and tpm_pm_resume()
as its PM callbacks directly, without defining its own PM callback
routines.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:37:02 +02:00
Rafael J. Wysocki
035e2ce8eb PM / TPM: Drop unused pm_message_t argument from tpm_pm_suspend()
The tpm_pm_suspend()'s second argument of type pm_message_t is not
used, so remove it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:36:57 +02:00
Rafael J. Wysocki
7650572a8b omap-rng: Use struct dev_pm_ops for power management
Make the omap-rng driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:36:51 +02:00
Preeti U Murthy
8651f97bd9 PM / cpuidle: System resume hang fix with cpuidle
On certain bios, resume hangs if cpus are allowed to enter idle states
during suspend [1].

This was fixed in apci idle driver [2].But intel_idle driver does not
have this fix. Thus instead of replicating the fix in both the idle
drivers, or in more platform specific idle drivers if needed, the
more general cpuidle infrastructure could handle this.

A suspend callback in cpuidle_driver could handle this fix. But
a cpuidle_driver provides only basic functionalities like platform idle
state detection capability and mechanisms to support entry and exit
into CPU idle states. All other cpuidle functions are found in the
cpuidle generic infrastructure for good reason that all cpuidle
drivers, irrepective of their platforms will support these functions.

One option therefore would be to register a suspend callback in cpuidle
which handles this fix. This could be called through a PM_SUSPEND_PREPARE
notifier. But this is too generic a notfier for a driver to handle.

Also, ideally the job of cpuidle is not to handle side effects of suspend.
It should expose the interfaces which "handle cpuidle 'during' suspend"
or any other operation, which the subsystems call during that respective
operation.

The fix demands that during suspend, no cpus should be allowed to enter
deep C-states. The interface cpuidle_uninstall_idle_handler() in cpuidle
ensures that. Not just that it also kicks all the cpus which are already
in idle out of their idle states which was being done during cpu hotplug
through a CPU_DYING_FROZEN callbacks.

Now the question arises about when during suspend should
cpuidle_uninstall_idle_handler() be called. Since we are dealing with
drivers it seems best to call this function during dpm_suspend().
Delaying the call till dpm_suspend_noirq() does no harm, as long as it is
before cpu_hotplug_begin() to avoid race conditions with cpu hotpulg
operations. In dpm_suspend_noirq(), it would be wise to place this call
before suspend_device_irqs() to avoid ugly interactions with the same.

Ananlogously, during resume.

References:
[1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674075.
[2] http://marc.info/?l=linux-pm&m=133958534231884&w=2

Reported-and-tested-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-07-10 21:34:49 +02:00
Tomas Winkler
16a50b1270 mei: pci_resume: set IRQF_ONESHOT for msi request_threaded_irq
when the default irq quick handler is used then IRQF_ONESHOT must be set
otherwise the request fails and following error is displayed:

mei 0000:00:16.0: irq 48 for MSI/MSI-X
genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 48
mei 0000:00:16.0: request_threaded_irq failed: irq = 48.
dpm_run_callback(): pci_pm_resume+0x0/0x140 returns -22
PM: Device 0000:00:16.0 failed to resume async: error -22

Reported-by: Peter Wu <lekensteyn@gmail.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Tested-by: Peter Wu <lekensteyn@gmail.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable <stable@vger.kernel.org> # 3.5
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-10 10:45:07 -07:00
Trond Myklebust
f1daf666dd NFSv4: Fix an NFSv4 mount regression
The helper nfs_fs_mount() will always call nfs4_try_mount with the
mount_info->fill_super argument pointing to nfs_fill_super, which is
NFSv2/v3 only.
Fix is to have nfs4_try_mount replace it with nfs4_fill_super.

The regression was introduced by commit c40f8d1d (NFS: Create a common
fs_mount() function)

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-10 13:25:39 -04:00
Denis 'GNUtoo' Carikli
0767211bea arm/dts: Add support for i.MX31 bug 1.x board from buglabs.
Only the main UART and the memory node information are added.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-07-10 19:23:03 +02:00
Denis 'GNUtoo' Carikli
d2a37b3d91 ARM i.MX31: Add devicetree support
This patch adds basic devicetree support for i.MX31 based SoCs.

Only the UART and interrupts bindings are added.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-07-10 19:23:03 +02:00
Alan Stern
dbf0e4c725 PCI: EHCI: fix crash during suspend on ASUS computers
Quite a few ASUS computers experience a nasty problem, related to the
EHCI controllers, when going into system suspend.  It was observed
that the problem didn't occur if the controllers were not put into the
D3 power state before starting the suspend, and commit
151b612847 (USB: EHCI: fix crash during
suspend on ASUS computers) was created to do this.

It turned out this approach messed up other computers that didn't have
the problem -- it prevented USB wakeup from working.  Consequently
commit c2fb8a3fa2 (USB: add
NO_D3_DURING_SLEEP flag and revert 151b612847) was merged; it
reverted the earlier commit and added a whitelist of known good board
names.

Now we know the actual cause of the problem.  Thanks to AceLan Kao for
tracking it down.

According to him, an engineer at ASUS explained that some of their
BIOSes contain a bug that was added in an attempt to work around a
problem in early versions of Windows.  When the computer goes into S3
suspend, the BIOS tries to verify that the EHCI controllers were first
quiesced by the OS.  Nothing's wrong with this, but the BIOS does it
by checking that the PCI COMMAND registers contain 0 without checking
the controllers' power state.  If the register isn't 0, the BIOS
assumes the controller needs to be quiesced and tries to do so.  This
involves making various MMIO accesses to the controller, which don't
work very well if the controller is already in D3.  The end result is
a system hang or memory corruption.

Since the value in the PCI COMMAND register doesn't matter once the
controller has been suspended, and since the value will be restored
anyway when the controller is resumed, we can work around the BIOS bug
simply by setting the register to 0 during system suspend.  This patch
(as1590) does so and also reverts the second commit mentioned above,
which is now unnecessary.

In theory we could do this for every PCI device.  However to avoid
introducing new problems, the patch restricts itself to EHCI host
controllers.

Finally the affected systems can suspend with USB wakeup working
properly.

Reference: https://bugzilla.kernel.org/show_bug.cgi?id=37632
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=42728
Based-on-patch-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Dâniel Fraga <fragabr@gmail.com>
Tested-by: Javier Marcet <jmarcet@gmail.com>
Tested-by: Andrey Rahmatullin <wrar@wrar.name>
Tested-by: Oleksij Rempel <bug-track@fisher-privat.net>
Tested-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Cc: stable <stable@vger.kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-10 09:52:05 -07:00
Henrik Rydberg
3dde22a98e Input: bcm5974 - Add support for 2012 MacBook Pro Retina
Add support for the 15'' MacBook Pro Retina model (MacBookPro10,1).

Patch originally written by clipcarl (forums.opensuse.org).

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-10 09:45:05 -07:00
Ryan Bourgeois
b2e6ad7dfe HID: add support for 2012 MacBook Pro Retina
Add support for the 15'' MacBook Pro Retina. The keyboard is
the same as recent models.

The patch needs to be synchronized with the bcm5974 patch for
the trackpad - as usual.

Patch originally written by clipcarl (forums.opensuse.org).

[rydberg@euromail.se: Amended mouse ignore lines]
Signed-off-by: Ryan Bourgeois <bluedragonx@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-07-10 09:44:59 -07:00
Laxman Dewangan
7be531883a regulator: tps65910: correct init value of n_voltages
Recent change in the core driver to get the maximum voltage
is based on the (n_voltages -1) steps of voltage.
For the tps65910, the (n_voltages -1)th step voltage is
calculated based on the callback function list_voltage.
This function direct maps the datasheet and adjust the
first few steps for initial voltage as per datasheet,
and hence initialize the n_voltages based on datasheet.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-10 17:16:05 +01:00
Arnd Bergmann
0e3585113f Merge branch 'devel-omap5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/newsoc
From Tony Lindgren <tony@atomide.com>:

This branch contains minimal support for omap5 to boot to a
console without clock framework support. This branch depends
on omap-cleanup-part2-for-v3.6.

* 'devel-omap5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: Kconfig update to support additional GPIOs in OMAP5
  ARM: OMAP5: Add the build support
  arm/dts: OMAP5: Add omap5 dts files
  ARM: OMAP5: board-generic: Add device tree support
  ARM: omap2+: board-generic: clean up the irq data from board file
  ARM: OMAP5: Add SMP support
  ARM: OMAP5: Add the WakeupGen IP updates
  ARM: OMAP5: l3: Add l3 error handler support for omap5
  ARM: OMAP5: gpmc: Update gpmc_init()
  ARM: OMAP5: timer: Add clocksource, clockevent support
  ARM: OMAP5: Add minimal support for OMAP5430 SOC
  ARM: OMAP5: id: Add cpu id for ES versions
  ARM: OMAP: counter-32k: Select the CR register offset using the IP scheme
  ARM: OMAP2+: Move stubbed secure_sram_reserve function to a common.c and call it __weak

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10 17:43:22 +02:00
Arnd Bergmann
229ce6f45b Merge branch 'omap/cleanup2' into next/newsoc
Dependency for omap/minimal-omap5
2012-07-10 17:42:59 +02:00
Arnd Bergmann
4450cb7d58 This branch adds clock data for am33xx. Note that eventually these
will use the common clock framework, but those patches are not quite
 ready yet for omaps. This branch depends on omap-cleanup-part2-for-v3.6
 branch.
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Merge tag 'omap-devel-am33xx-data-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/clk

From Tony Lindgren <tony@atomide.com>:

This branch adds clock data for am33xx. Note that eventually these
will use the common clock framework, but those patches are not quite
ready yet for omaps. This branch depends on omap-cleanup-part2-for-v3.6
branch.

* tag 'omap-devel-am33xx-data-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP3+: clock33xx: Add AM33XX clock tree data
  ARM: OMAP3+: clock: Move common clksel_rate & clock data to common file

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-10 17:41:13 +02:00
Arnd Bergmann
99ac7b577f Merge branch 'omap/cleanup2' into next/clk
Dependency for omap/am33xx-clk branch
2012-07-10 17:40:43 +02:00