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10452 commits

Author SHA1 Message Date
Matthew Garrett
0846e7e985 usb: Add support for indicating whether a port is removable
Userspace may want to make policy decisions based on whether or not a
given USB device is removable. Add a per-device member and support
for exposing it in sysfs. Information sources to populate it will be
added later.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-09 08:40:11 -08:00
Mark Brown
a08a499aa3 Linux 3.3-rc3
.. the number of the half-beast?
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Merge tag 'v3.3-rc3' as we've got several bugfixes in there which are
colliding annoyingly with development.

Linux 3.3-rc3

.. the number of the half-beast?

Conflicts:
	sound/soc/codecs/wm5100.c
	sound/soc/codecs/wm8994.c
2012-02-09 12:00:22 +00:00
James Morris
9e3ff38647 Merge branch 'next-queue' into next 2012-02-09 17:02:34 +11:00
Ohad Ben-Cohen
bcabbccabf rpmsg: add virtio-based remote processor messaging bus
Add a virtio-based inter-processor communication bus, which enables
kernel drivers to communicate with entities, running on remote
processors, over shared memory using a simple messaging protocol.

Every pair of AMP processors share two vrings, which are used to send
and receive the messages over shared memory.

The header of every message sent on the rpmsg bus contains src and dst
addresses, which make it possible to multiplex several rpmsg channels on
the same vring.

Every rpmsg channel is a device on this bus. When a channel is added,
and an appropriate rpmsg driver is found and probed, it is also assigned
a local rpmsg address, which is then bound to the driver's callback.

When inbound messages carry the local address of a bound driver,
its callback is invoked by the bus.

This patch provides a kernel interface only; user space interfaces
will be later exposed by kernel users of this rpmsg bus.

Designed with Brian Swetland <swetland@google.com>.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au> (virtio_ids.h)
Cc: Brian Swetland <swetland@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
2012-02-08 22:53:58 +02:00
Ohad Ben-Cohen
400e64df6b remoteproc: add framework for controlling remote processors
Modern SoCs typically employ a central symmetric multiprocessing (SMP)
application processor running Linux, with several other asymmetric
multiprocessing (AMP) heterogeneous processors running different instances
of operating system, whether Linux or any other flavor of real-time OS.

Booting a remote processor in an AMP configuration typically involves:
- Loading a firmware which contains the OS image
- Allocating and providing it required system resources (e.g. memory)
- Programming an IOMMU (when relevant)
- Powering on the device

This patch introduces a generic framework that allows drivers to do
that. In the future, this framework will also include runtime power
management and error recovery.

Based on (but now quite far from) work done by Fernando Guzman Lugo
<fernando.lugo@ti.com>.

ELF loader was written by Mark Grosen <mgrosen@ti.com>, based on
msm's Peripheral Image Loader (PIL) by Stephen Boyd <sboyd@codeaurora.org>.

Designed with Brian Swetland <swetland@google.com>.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Brian Swetland <swetland@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
2012-02-08 22:52:56 +02:00
Stephen Warren
3391811c42 gpio: tegra: Parameterize the number of banks
Tegra20's GPIO controller has 7 banks, and Tegra30's controller has 8
banks. Allow the number of banks to be configured at run-time by the
device tree.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:25:00 -08:00
Stephen Warren
6f74dc9bc8 gpio: tegra: Dynamically allocate IRQ base, and support DT
Enhance the driver to dynamically allocate the base IRQ number, and
create an IRQ domain for itself. The use of an IRQ domain ensures that
any device tree node interrupts properties are correctly parsed.

Describe interrupt-related properties in the device tree binding docs,
and the contents of "child" node interrupts property.

Update tegra*.dtsi to specify the required interrupt-related properties.

Finally, remove the definition of TEGRA_GPIO_TO_IRQ; this macro no longer
gives correct results since the IRQ numbers for GPIOs are dynamically
allocated.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:25:00 -08:00
Stephen Warren
d17adfdb17 ARM: dt: Add binding for Tegra PMC
The Tegra PMC (Power Management Controller) interfaces with an external
PMU (Power Management Unit), and controls wake-up from sleep modes.

This initial binding is the bare minimum required to control the PMC's
inversion of the PMU's interrupt signal.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:21:21 -08:00
Stephen Warren
8051b75ab3 ARM: dt: tegra: Add Tegra APB DMA device tree binding
Document binding, and add the node to tegra*.dtsi.

The driver isn't actually instantiated from this node yet, but the I2S
binding will rely on being able to refer to the APB DMA node using a
phandle.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:21:20 -08:00
Stephen Warren
a38b84fce9 dt: tegra gpio: Flesh out binding documentation
Document the required reg and interrupts properties.
Add a complete example.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:21:19 -08:00
Olof Johansson
0c6700abfa ARM: tegra: emc: device tree bindings
Device tree bindings for the EMC tables on tegra.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-06 18:21:18 -08:00
Larry Finger
f5fe184b08 Documentation: add missing tainted bits to Documentation/sysctl/kernel.txt
Two of the bits in the tainted flag are not documented.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-06 16:29:19 -08:00
Bryan Schumaker
a602bea3e7 NFS: Update idmapper documentation
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-06 18:48:01 -05:00
Johannes Berg
95de817b90 cfg80211: stop tracking authenticated state
To track authenticated state seems to have been
a design mistake in cfg80211. It is possible to
have out of band authentication (FT), tracking
multiple authentications caused more problems
than it ever helped, and the implementation in
mac80211 is too complex.

Remove all this complexity, and let userspace
do whatever it wants to, mac80211 can deal with
that just fine. Association is still tracked of
course, but authentication no longer is. Local
auth state changes are thus no longer of value,
so ignore them completely.

This will also help implement SAE -- asking the
driver to do an authentication is now almost
equivalent to sending an authentication frame,
with the exception of shared key authentication
which is still handled completely.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-06 14:50:37 -05:00
David S. Miller
dd48dc34fe Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-02-04 16:39:32 -05:00
Sritej Velaga
97bf2262e7 qlge: Updating Schultz LICENSE.qlge file.
Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-04 15:59:30 -05:00
Linus Torvalds
31c150a11c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklist
  Input: serio_raw - return proper result when serio_raw_read fails
  Input: document device properties
  Input: twl4030_keypad - fix comment (trivial)
  Input: gpio_keys - fix struct device declared inside parameter list
  Input: evdev - fix variable initialisation
2012-02-04 10:57:42 -08:00
Jean-Christophe PLAGNIOL-VILLARD
9918ceafd4 ARM: at91: code removal of CAP9 SoC
Following removal announce and addition to feature-removal-schedule.txt,
here is the actual source code deletion for Atmel CAP9 family.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:33:05 +01:00
Greg Kroah-Hartman
bd1d462e13 Merge 3.3-rc2 into the driver-core-next branch.
This was done to resolve a merge and build problem with the
drivers/acpi/processor_driver.c file.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02 11:24:44 -08:00
Li Zefan
761b3ef50e cgroup: remove cgroup_subsys argument from callbacks
The argument is not used at all, and it's not necessary, because
a specific callback handler of course knows which subsys it
belongs to.

Now only ->pupulate() takes this argument, because the handlers of
this callback always call cgroup_add_file()/cgroup_add_files().

So we reduce a few lines of code, though the shrinking of object size
is minimal.

 16 files changed, 113 insertions(+), 162 deletions(-)

   text    data     bss     dec     hex filename
5486240  656987 7039960 13183187         c928d3 vmlinux.o.orig
5486170  656987 7039960 13183117         c9288d vmlinux.o

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2012-02-02 09:20:22 -08:00
Vaibhav Hiremath
5411972995 arm/dts: OMAP3: Add omap3evm and am335xevm support
TI's OMAP3EVM and AM335xEVM are software development boards
available for OMAP35x(AM/DM37x) and AM335x devices respectively;
and these devices are considered under omap3 family.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-01 21:56:17 -07:00
Randy Dunlap
13405059e8 docbook: fix fatal errors in device-drivers docbook and add DMA Management section
Fix 2 fatal errors in the device-drivers docbook.
Also add some missing files from drivers/base/; since several
of these are DMA-related, add a section for DMA Management.

docproc: drivers/base/sys.c: No such file or directory
docproc: drivers/tty/serial/8250.c: No such file or directory

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-01 17:28:26 -08:00
Rafael J. Wysocki
dcaad77a80 Merge branch 'v3.4-for-rafael' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into pm-domains
* 'v3.4-for-rafael' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Hook up power domains to generic power domain infrastructure
  PM / Domains: Add OF support
2012-02-01 22:18:43 +01:00
Linus Walleij
9dfac4fd7f pinctrl: delete raw device pointers in pinmux maps
After discussion with Mark Brown in an unrelated thread about
ADC lookups, it came to my knowledge that the ability to pass
a struct device * in the regulator consumers is just a
historical artifact, and not really recommended. Since there
are no in-kernel users of these pointers, we just kill them
right now, before someone starts to use them.

Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-02-01 19:42:35 +01:00
Henrik Rydberg
d04df0232d Input: document device properties
Add a section which defines the input device properties and provides
guidelines on how to use them.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Jussi Pakkanen <jussi.pakkanen@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2012-02-01 09:14:17 -08:00
Mark Brown
177f72fd10 Linux 3.3-rc2
.. several days delayed. No reason, I just didn't think of it.
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Merge tag 'v3.3-rc2' into for-3.4

A reasonable amount of new development is causing fiddly merge conflicts
between different resource management changes (mostly fixing bugs in
resource management due to noticing things while doing enhancements in
the same area).

Linux 3.3-rc2

.. several days delayed. No reason, I just didn't think of it.
2012-02-01 10:08:15 +00:00
Leon Romanovsky
761bfdd911 ASoC: Tegra+ALC5632 machine: Add device tree binding documentation
Document device tree binding for the tegra board with ALC5632 codec
according to datasheet functional block description.

Signed-off-by: Leon Romanovsky <leon@leon.nu>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-31 19:36:47 +00:00
Leon Romanovsky
919c1e541d ASoC: ALC5632: Add device tree binding documentation
Document the device tree binding for the ALC5632 codec and update vendor
specific prefix for the Realtek.

Signed-off-by: Leon Romanovsky <leon@leon.nu>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-31 19:36:17 +00:00
Axel Lin
c1432b1ebc regulator: add devm_regulator_* to the list of managed interfaces
Add devm_regulator_put() and devm_regulator_bulk_get() to the list of managed
interfaces.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-31 11:18:56 +00:00
Linus Torvalds
8e2a2880a5 Merge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Here are some fixes to the pin control system that has accumulated since
-rc1.  Mainly Tony Lindgren fixed the module load/unload logic and the
rest are minor fixes and documentation.

* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: add checks for empty function names
  pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set
  pinctrl: fix some pinmux typos
  pinctrl: free debugfs entries when unloading a pinmux driver
  pinctrl: unbreak error messages
  Documentation/pinctrl: fix a few syntax errors in code examples
  pinctrl: fix pinconf_pins_show iteration
2012-01-30 17:06:26 -08:00
Paul Gortmaker
3396c7823e drivers/net: fix up stale paths from driver reorg
The reorganization of the driver layout in drivers/net
left behind some stale paths in comments and in Kconfig
help text.  Bring them up to date.  No actual change to
any code takes place here.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-30 12:54:40 -05:00
Rafael J. Wysocki
cf579dfb82 PM / Sleep: Introduce "late suspend" and "early resume" of devices
The current device suspend/resume phases during system-wide power
transitions appear to be insufficient for some platforms that want
to use the same callback routines for saving device states and
related operations during runtime suspend/resume as well as during
system suspend/resume.  In principle, they could point their
.suspend_noirq() and .resume_noirq() to the same callback routines
as their .runtime_suspend() and .runtime_resume(), respectively,
but at least some of them require device interrupts to be enabled
while the code in those routines is running.

It also makes sense to have device suspend-resume callbacks that will
be executed with runtime PM disabled and with device interrupts
enabled in case someone needs to run some special code in that
context during system-wide power transitions.

Apart from this, .suspend_noirq() and .resume_noirq() were introduced
as a workaround for drivers using shared interrupts and failing to
prevent their interrupt handlers from accessing suspended hardware.
It appears to be better not to use them for other porposes, or we may
have to deal with some serious confusion (which seems to be happening
already).

For the above reasons, introduce new device suspend/resume phases,
"late suspend" and "early resume" (and analogously for hibernation)
whose callback will be executed with runtime PM disabled and with
device interrupts enabled and whose callback pointers generally may
point to runtime suspend/resume routines.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2012-01-29 20:38:29 +01:00
Linus Torvalds
0a96265754 Here are some patches for the 3.3-rc1 tree.
It contains the removal of the sysdev code, now that all users of it are
 gone, as well as some sysfs bugfixes that have been reported by users.
 There are also some documentation updates here as well.
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Merge tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Here are some patches for the 3.3-rc1 tree.

It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.

* tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
  stable: update documentation to ask for kernel version
  base/core.c:fix typo in comment in function device_add
  Documentation: devres: add allocation functions to list of supported calls
  Documentation update for the driver model core
  kernel-doc: fix new warnings in driver-core
  kernel-doc: fix new warnings in debugfs
  kernel-doc: fix new warnings in device.h
  driver core: remove drivers/base/sys.c and include/linux/sysdev.h
2012-01-28 18:20:48 -08:00
Linus Torvalds
e3b8369ca8 Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1
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Merge tag 'for-linus' of git://github.com/rustyrussell/linux

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  lguest: remove reference from Documentation/virtual/00-INDEX
  virtio: correct the memory barrier in virtqueue_kick_prepare()
  virtio: fix typos of memory barriers
2012-01-28 18:16:09 -08:00
Linus Torvalds
81bc3009e0 arm-soc fixes for 3.3-rc:
AT91 needed reset fixes which resulted in some minor code refactoring,
 it also adds a feature-removal for one of their platforms for 3.4.
 The USB patches have been acked by Greg K-H.
 
 i.MX and ux500 both have some minor fixes, nothing controversial.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

arm-soc fixes for 3.3-rc:

AT91 needed reset fixes which resulted in some minor code refactoring,
it also adds a feature-removal for one of their platforms for 3.4.
The USB patches have been acked by Greg K-H.

i.MX and ux500 both have some minor fixes, nothing controversial.

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arch/arm/mach-imx/mach-mx53_ard.c: add missing iounmap
  ARM: imx: iomux-v1.h: Fix build error due to __init annotation
  ARM: at91: Fix at91sam9g45 and at91cap9 reset
  ARM: at91: make rstc soc independent
  ARM: at91: introduce AT91_SAM9_ALT_RESET to select the at91sam9 alternative reset
  ARM: at91: merge at91cap9_ddrsdr.h in at91sam9_ddrsdr.h
  ARM: at91: fix cap9 ddrsdr register
  ARM/USB: at91/ohci-at91: rename vbus_pin_inverted to vbus_pin_active_low
  USB: at91: fix clk_get error handling
  ARM: at91: removal of CAP9 SoC family
  ARM: at91: fix at91rm9200 soc subtype handling
  mach-ux500: no MMC_CAP_SD_HIGHSPEED on Snowball
  mach-ux500: enable ARM errata 764369
  mach-ux500: do not override outer.inv_all
  mach-ux500: musb: now musb is always in OTG mode
  ARM: imx6: add missing twd_clk for imx6q clock
2012-01-28 13:21:54 -08:00
Rusty Russell
13289d5f2b lguest: remove reference from Documentation/virtual/00-INDEX
We're in tools/lguest now.

Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-28 08:10:23 +10:30
Rakib Mullick
30fd049afc sched: Remove sched_switch
Currently we don't utilize the sched_switch field anymore.

But, simply removing sched_switch field from the middle of the
sched_stat output will break tools.

So, to stay compatible we hardcode it to zero and remove the
field from the scheduler data structures.

Update the schedstat documentation accordingly.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1327422836.27181.5.camel@localhost.localdomain
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-01-27 13:28:53 +01:00
Thomas Abraham
91cfbd4ee0 ARM: EXYNOS: Hook up power domains to generic power domain infrastructure
Add support for generic power domain for Exynos4 platforms and remove the
Samsung specific power domain control for Exynos4.

The generic power domain infrastructure is used to control the power domains
available on Exynos4. For non-dt platforms, the power domains are statically
instantiated. For dt platforms, the power domain nodes found in the device
tree are instantiated.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-01-27 15:25:49 +09:00
Uwe Kleine-König
3afbd89c96 serial/efm32: add new driver
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-26 11:29:47 -08:00
Ludwig Nussel
d6e486868c debugfs: add mode, uid and gid options
Cautious admins may want to restrict access to debugfs. Currently a
manual chown/chmod e.g. in an init script is needed to achieve that.
Distributions that want to make the mount options configurable need
to add extra config files. By allowing to set the root inode's uid,
gid and mode via mount options no such hacks are needed anymore.
Instead configuration becomes straight forward via fstab.

Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-26 11:28:49 -08:00
Tony Lindgren
de849eecd0 pinctrl: fix some pinmux typos
Fix some pinmux typos so implementing pinmux drivers
is a bit easier.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-26 14:11:31 +01:00
Linus Torvalds
f8275f9694 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Quoth Len:
 "This fixes a merge-window regression due to a conflict
  between error injection and preparation to remove atomicio.c
  Here we fix that regression and complete the removal
  of atomicio.c.

  This also re-orders some idle initialization code to
  complete the merge window series that allows cpuidle
  to cope with bringing processors on-line after boot."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  Use acpi_os_map_memory() instead of ioremap() in einj driver
  ACPI, APEI, EINJ, cleanup 0 vs NULL confusion
  ACPI, APEI, EINJ Allow empty Trigger Error Action Table
  thermal: Rename generate_netlink_event
  ACPI / PM: Add Sony Vaio VPCCW29FX to nonvs blacklist.
  ACPI: Remove ./drivers/acpi/atomicio.[ch]
  ACPI, APEI: Add RAM mapping support to ACPI
  ACPI, APEI: Add 64-bit read/write support for APEI on i386
  ACPI processor hotplug: Delay acpi_processor_start() call for hotplugged cores
  ACPI processor hotplug: Split up acpi_processor_add
2012-01-24 22:05:44 -08:00
Uwe Kleine-König
f54367f9de Documentation/pinctrl: fix a few syntax errors in code examples
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-24 22:47:45 +01:00
Jim Cromie
85f7f6c0ed dynamic_debug: process multiple debug-queries on a line
Insert ddebug_exec_queries() in place of ddebug_exec_query().  It
splits the query string on [;\n], and calls ddebug_exec_query() on
each.  All queries are processed independent of errors, allowing a
query to fail, for example when a module is not installed.  Empty
lines and comments are skipped.  Errors are counted, and the last
error seen (negative) or the number of callsites found (0 or positive)
is returned.  Return code checks are altered accordingly.

With this, multiple queries can be given in ddebug_query, allowing
more selective enabling of callsites.  As a side effect, a set of
commands can be batched in:

	cat cmd-file > $DBGMT/dynamic_debug/control

We dont want a ddebug_query syntax error to kill the dynamic debug
facility, so dynamic_debug_init() zeros ddebug_exec_queries()'s return
code after logging the appropriate message, so that ddebug tables are
preserved and $DBGMT/dynamic_debug/control file is created.  This
would be appropriate even without accepting multiple queries.

This patch also alters ddebug_change() to return number of callsites
matched (which typically is the same as number of callsites changed).
ddebug_exec_query() also returns the number found, or a negative value
if theres a parse error on the query.

Splitting on [;\n] prevents their use in format-specs, but selecting
callsites on punctuation is brittle anyway, meaningful and selective
substrings are more typical.

Note: splitting queries on ';' before handling trailing #comments
means that a ';' also terminates a comment, and text after the ';' is
treated as another query.  This trailing query will almost certainly
result in a parse error and thus have no effect other than the error
message.  The double corner case with unexpected results is:

     ddebug_query="func foo +p # enable foo ; +p"

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 12:50:36 -08:00
Jim Cromie
2b6783191d dynamic_debug: add trim_prefix() to provide source-root relative paths
trim_prefix(path) skips past the absolute source path root, and
returns the pointer to the relative path from there.  It is used to
shorten the displayed path in $DBGMT/dynamic_debug/control via
ddebug_proc_show(), and in ddebug_change() to allow relative filenames
to be used in applied queries.  For example:

  ~# echo file kernel/freezer.c +p > $DBGMT/dynamic_debug/control

  kernel/freezer.c:128 [freezer]cancel_freezing p "  clean up: %s\012"

trim_prefix(path) insures common prefix before trimming it, so
out-of-tree module paths are shown as full absolute paths.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 12:48:55 -08:00
Greg Kroah-Hartman
8381b5e88a stable: update documentation to ask for kernel version
It would save me an email round-trip asking which stable tree(s) that a
patch should be applied to, so document that the tree number should be
specified in the email request.

Reported-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 10:50:22 -08:00
Wolfram Sang
543f43ce87 Documentation: devres: add allocation functions to list of supported calls
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 10:47:42 -08:00
Linus Torvalds
ac1e3d4f5c Power management fixes for 3.3
Two fixes for regressions introduced during the merge window, one fix for
 a long-standing obscure issue in the computation of hibernate image size
 and two small PM documentation fixes.
 
 Namhyung Kim (1):
       PM / Hibernate: Correct additional pages number calculation
 
 Srivatsa S. Bhat (1):
       PM / Hibernate: Rewrite unlock_system_sleep() to fix s2disk regression
 
 Tetsuo Handa (1):
       PM / Sleep: Fix read_unlock_usermodehelper() call.
 
 Viresh Kumar (2):
       PM / Documentation: Fix spelling mistake in basic-pm-debugging.txt
       PM / Documentation: Fix minor issue in freezing_of_tasks.txt
 
  Documentation/power/basic-pm-debugging.txt |    2 +-
  Documentation/power/freezing-of-tasks.txt  |    8 ++++----
  drivers/base/firmware_class.c              |    3 +--
  include/linux/suspend.h                    |   19 +++++++++++++++++--
  kernel/power/snapshot.c                    |    3 ++-
  5 files changed, 25 insertions(+), 10 deletions(-)
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Merge tag 'pm-fixes-for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Power management fixes for 3.3

Two fixes for regressions introduced during the merge window, one fix for
a long-standing obscure issue in the computation of hibernate image size
and two small PM documentation fixes.

* tag 'pm-fixes-for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Sleep: Fix read_unlock_usermodehelper() call.
  PM / Hibernate: Rewrite unlock_system_sleep() to fix s2disk regression
  PM / Hibernate: Correct additional pages number calculation
  PM / Documentation: Fix minor issue in freezing_of_tasks.txt
  PM / Documentation: Fix spelling mistake in basic-pm-debugging.txt
2012-01-23 15:11:27 -08:00
Dan Magenheimer
417fc2caef mm: cleancache: report statistics via debugfs instead of sysfs.
[v9: akpm@linux-foundation.org: sysfs->debugfs; no longer need Doc/ABI file]

Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Wilk <konrad.wilk@oracle.com>
Cc: Jan Beulich <JBeulich@novell.com>
Acked-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Rik Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
2012-01-23 16:07:50 -05:00
Dan Magenheimer
3167760f83 mm: cleancache: s/flush/invalidate/
Per akpm suggestions alter the use of the term flush to be
invalidate. The next patch will do this across all MM.

This change is completely cosmetic.

[v9: akpm@linux-foundation.org: change "flush" to "invalidate", part 3]

Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Jan Beulich <JBeulich@novell.com>
Reviewed-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Rik Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
[v10: Fixed  fs: move code out of buffer.c conflict change]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-01-23 16:06:24 -05:00