Commit Graph

295532 Commits

Author SHA1 Message Date
Linus Walleij
15b25701b2 watchdog: coh901327: convert to use watchdog core
This converts the COH901327 watchdog to use the watchdog core.
I followed Wolframs document, looked at some other drivers and
tested it on the U300.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:15:47 +02:00
Viresh Kumar
fd7b673c92 watchdog: Add support for WDIOC_GETTIMELEFT IOCTL in watchdog core
This patch adds support for WDIOC_GETTIMELEFT IOCTL in watchdog core. So, there
is another function pointer added to struct watchdog_ops, which can be passed by
drivers to support this IOCTL.

Related documentation is updated too.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:15:37 +02:00
Wim Van Sebroeck
2ca1606359 watchdog: ep93xx_wdt: timeout is an unsigned int value.
the timeout is a positive thus unsigned int value.
Also re-add the comment about the actual heartbeat.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:15:24 +02:00
Mika Westerberg
59dcf1eb1a watchdog: ep93xx_wdt: Fix timeout after conversion to watchdog core
After the conversion of this driver to the watchdog core, I noticed that we
miss setting the initial timeout of the wdt device.
This results in a failure of the WDIOC_GETTIMEOUT ioctl call.

Reviewed-by: Mika Westerberg <mika.westerberg@iki.fi>
Tested-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:15:17 +02:00
H Hartley Sweeten
e12a679dde watchdog: Convert ep93xx driver to watchdog core
Convert the ep93xx_wdt driver to the watchdog framework API.

Also, use the dev_<fmt> functions instead of pr_<fmt> for logging.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
Cc: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:15:02 +02:00
Viresh Kumar
fb35a5ad5b watchdog: sp805: Use devm routines
sp805 driver currently uses normal kzalloc, ioremap, etc routines. This patch
replaces these routines with devm_kzalloc and devm_request_mem_region etc, so
that we don't need to handle freeing of resources for error cases and module
removal routine.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:14:34 +02:00
Viresh Kumar
d2e8919bcf watchdog: sp805: replace readl/writel with lighter _relaxed variants
readl/writel versions for ARM contain memory barrier instruction for
synchronizing DMA buffers.  These are not required at least on this
module.  So use lighter _relaxed variants.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:14:31 +02:00
Viresh Kumar
bfae14b679 watchdog: sp805: Fix documentation style comment
@ was missing before variables names, in their description. Also adev is
mentioned as dev in comment. Fix both these issues.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:14:28 +02:00
Viresh Kumar
60a1aa50b2 watchdog: mpcore_wdt: Allow platform_get_irq() to fail
irq is not necessary for mpcore wdt. Don't return error if it is not passed. But
if it is passed, then request_irq must pass.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:14:20 +02:00
Viresh Kumar
75f5a536c0 watchdog: mpcore_wdt: Use devm routines
mpcore_wdt driver currently uses normal kzalloc, request_irq, ioremap, etc
routines. This patch replaces these routines with devm_kzalloc and
devm_request_mem_region etc, so that we don't need to handle freeing of
resources for error cases and module removal routine.

Also, request_irq is moved before registering misc device, so that we are ready
for irq as soon as device is registered.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:14:15 +02:00
Viresh Kumar
aa065770f5 watchdog: mpcore_wdt: Rename dev to pdev for pointing to struct platform_device
Pointer to struct platform_device is named as dev, which makes it confusing when
we write statements like dev->dev to access struct device within it.

This patch renames such names to pdev.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:14:11 +02:00
Jan Beulich
38c484fa13 watchdog: xen: don't clear is_active when xen_wdt_stop() failed
xen_wdt_release() shouldn't clear is_active even when the watchdog
didn't get stopped (which by itself shouldn't happen, but let's return
a proper error in this case rather than adding a BUG() upon hypercall
failure).

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:13:55 +02:00
Jan Beulich
83448bf786 watchdog: xen: don't unconditionally enable the watchdog during resume
This was found to be a problem particularly after guest migration.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reported-by: Wouter de Geus <benv-xensource.com@junerules.com>
Reported-by: Ian Campbell <Ian.Campbell@citrix.com>
Tested-by: Wouter de Geus <benv-xensource.com@junerules.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:13:43 +02:00
Jaehoon Chung
ccd4144dd4 watchdog: fix compiler error for missing parenthesis
Joe's patch(watchdog: Use pr_<fmt> and pr_<level>) missed parenthesis in s3c2410_wdt.c.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:09:13 +02:00
Wim Van Sebroeck
697b41e4d4 watchdog: ep93xx_wdt.c: fix platform probe
Fix the device/driver init so that the misc_register
happens as last (since this opens userspace access to
the device).

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:08:48 +02:00
H Hartley Sweeten
3e0113a896 watchdog: ep93xx: Convert the watchdog driver into a platform device.
Convert the ep93xx watchdog driver into a platform device and
remove it's dependency on <mach/hardware.h>.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Reviewed-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-03-27 20:08:34 +02:00
Wim Van Sebroeck
0197c1c49e watchdog: fix set_timeout operations
Since we changed the behaviour of the set_timeout operation in the
watchdog API, we need to change the allready converted drivers so
that they update the timeout field at the end of the set_timeout
operation.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:08:09 +02:00
Hans de Goede
b10f7c12e0 watchdog: watchdog_dev: Let the driver update the timeout field on set_timeout success
When a set_timeout operation succeeds this does not necessarily mean that
the exact timeout requested has been achieved, because the watchdog does not
necessarily have a 1 second resolution. So rather then have the core set
the timeout member of the watchdog_device struct to the exact requested
value, instead the driver should set it to the actually achieved timeout value.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:07:43 +02:00
Alan Cox
a5132cafc0 watchdog: softdog: convert to watchdog core
Convert softdog.c to the new watchdog API.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:07:21 +02:00
Axel Lin
a0f3683365 watchdog: Convert max63xx_wdt driver to watchdog framework
This patch converts max63xx_wdt driver to watchdog framework.
Also use devm_* APIs to save a few error handling code.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:06:59 +02:00
Wolfram Sang
6b1e83869d watchdog: pnx4008: convert driver to use the watchdog framework
Make this driver a user of the watchdog framework and remove parts now handled
by the core. Tested on a custom lpc32xx-board.

[wim@iguana.be: Added set_timeout operation]
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:06:37 +02:00
Axel Lin
2e51d90f4d watchdog: Convert wm8350_wdt driver to watchdog core
This patch converts wm8350_wdt driver to use watchdog core APIs.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:06:22 +02:00
Axel Lin
85f6df1492 watchdog: Convert jz4740_wdt driver to watchdog core
This patch converts jz4740_wdt driver to use watchdog core APIs.
Also use devm_* APIs to save a few error handling code.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:06:16 +02:00
Wim Van Sebroeck
86a1e1896c watchdog: nowayout is bool
nowayout is actually a boolean value.
So make it bool for all watchdog device drivers.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 20:06:02 +02:00
Joe Perches
27c766aaac watchdog: Use pr_<fmt> and pr_<level>
Use the current logging styles.

Make sure all output has a prefix.
Add missing newlines.
Remove now unnecessary PFX, NAME, and miscellaneous other #defines.
Coalesce formats.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 19:59:26 +02:00
Wolfram Sang
7cbc353540 watchdog: pnx4008: don't use __raw_-accessors
__raw_readl/__raw_writel are not meant for drivers [1].

[1] http://thread.gmane.org/gmane.linux.ports.arm.kernel/117626

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 19:59:09 +02:00
Wolfram Sang
19f505f09c watchdog: pnx4008: cleanup resource handling using managed devices
The resource handling in this driver was flaky: IO_ADDRESS instead of
ioremap (and no unmapping), an unneeded static resource, no central exit
path for error cases. Fix this by converting the driver to use managed
resources. Also use dev_*-messages instead of pr_* while we are here.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 19:59:03 +02:00
Viresh Kumar
16ac4abe0d watchdog: sp805_wdt: add pm callbacks to support standby/S2R/hibernation
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 19:58:45 +02:00
Oskar Schirmer
474ef12100 watchdog: make imx2_wdt report boot status correctly
Ioctl WDIOC_GETBOOTSTATUS is supposed to return some information
on why the system did (re)boot recently, value WDIOF_CARDRESET
being used to indicate watchdog induced reboot.

Up to now, imx2_wdt did not provide a value here, always returning
zero to indicate normal boot.

Do evaluate the IMX Watchdog Reset Status Register and
produce WDIOF_CARDRESET with WDIOC_GETBOOTSTATUS in case
of a watchdog induced reset.

Signed-off-by: Oskar Schirmer <oskar@scara.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 19:58:30 +02:00
Wolfram Sang
5ba927e8ca watchdog: documentation: remove index-file
The 00-index file in the watchdog directory is, like many others,
outdated (conversion-howto is missing) and doesn't contain worthwhile
additional information. As it seems to be a maintenance burden without
much gain, simply remove it.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-03-27 19:57:26 +02:00
Linus Torvalds
e22057c859 One tiny feature that accidentally got lost in the initial git pull:
* Add fast-EOI acking of interrupts (clear a bit instead of hypercall)
 And bug-fixes:
  * Fix CPU bring-up code missing a call to notify other subsystems.
  * Fix reading /sys/hypervisor even if PVonHVM drivers are not loaded.
  * In Xen ACPI processor driver: remove too verbose WARN messages, fix up
    the Kconfig dependency to be a module by default, and add dependency on
    CPU_FREQ.
  * Disable CPU frequency drivers from loading when booting under Xen
    (as we want the Xen ACPI processor to be used instead).
  * Cleanups in tmem code.
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Merge tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull more xen updates from Konrad Rzeszutek Wilk:
 "One tiny feature that accidentally got lost in the initial git pull:
   * Add fast-EOI acking of interrupts (clear a bit instead of
     hypercall)
  And bug-fixes:
   * Fix CPU bring-up code missing a call to notify other subsystems.
   * Fix reading /sys/hypervisor even if PVonHVM drivers are not loaded.
   * In Xen ACPI processor driver: remove too verbose WARN messages, fix
     up the Kconfig dependency to be a module by default, and add
     dependency on CPU_FREQ.
   * Disable CPU frequency drivers from loading when booting under Xen
     (as we want the Xen ACPI processor to be used instead).
   * Cleanups in tmem code."

* tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/acpi: Fix Kconfig dependency on CPU_FREQ
  xen: initialize platform-pci even if xen_emul_unplug=never
  xen/smp: Fix bringup bug in AP code.
  xen/acpi: Remove the WARN's as they just create noise.
  xen/tmem: cleanup
  xen: support pirq_eoi_map
  xen/acpi-processor: Do not depend on CPU frequency scaling drivers.
  xen/cpufreq: Disable the cpu frequency scaling drivers from loading.
  provide disable_cpufreq() function to disable the API.
2012-03-24 12:20:25 -07:00
Rik van Riel
496b919b3b Fix potential endless loop in kswapd when compaction is not enabled
We should only test compaction_suitable if the kernel is built with
CONFIG_COMPACTION, otherwise the stub compaction_suitable function will
always return COMPACT_SKIPPED and send kswapd into an infinite loop.

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-24 12:18:32 -07:00
Linus Torvalds
250f6715a4 The following text was taken from the original review request:
"[RFC PATCH 0/2] audit of linux/device.h users in include/*"
 		https://lkml.org/lkml/2012/3/4/159
 --
 
 Nearly every subsystem has some kind of header with a proto like:
 
 	void foo(struct device *dev);
 
 and yet there is no reason for most of these guys to care about the
 sub fields within the device struct.  This allows us to significantly
 reduce the scope of headers including headers.  For this instance, a
 reduction of about 40% is achieved by replacing the include with the
 simple fact that the device is some kind of a struct.
 
 Unlike the much larger module.h cleanup, this one is simply two
 commits.  One to fix the implicit <linux/device.h> users, and then
 one to delete the device.h includes from the linux/include/ dir
 wherever possible.
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Merge tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull <linux/device.h> avoidance patches from Paul Gortmaker:
 "Nearly every subsystem has some kind of header with a proto like:

	void foo(struct device *dev);

  and yet there is no reason for most of these guys to care about the
  sub fields within the device struct.  This allows us to significantly
  reduce the scope of headers including headers.  For this instance, a
  reduction of about 40% is achieved by replacing the include with the
  simple fact that the device is some kind of a struct.

  Unlike the much larger module.h cleanup, this one is simply two
  commits.  One to fix the implicit <linux/device.h> users, and then one
  to delete the device.h includes from the linux/include/ dir wherever
  possible."

* tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  device.h: audit and cleanup users in main include dir
  device.h: cleanup users outside of linux/include (C files)
2012-03-24 10:41:37 -07:00
Linus Torvalds
11bcb32848 The following text was taken from the original review request:
"[PATCH 0/3] RFC - module.h usage cleanups in fs/ and lib/"
 		https://lkml.org/lkml/2012/2/29/589
 --
 
 Fix up files in fs/ and lib/ dirs to only use module.h if they really
 need it.
 
 These are trivial in scope vs. the work done previously.  We now have
 things where any few remaining cleanups can be farmed out to arch or
 subsystem maintainers, and I have done so when possible.  What is
 remaining here represents the bits that don't clearly lie within a
 single arch/subsystem boundary, like the fs dir and the lib dir.
 
 Some duplicate includes arising from overlapping fixes from
 independent subsystem maintainer submissions are also quashed.
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Merge tag 'module-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull cleanup of fs/ and lib/ users of module.h from Paul Gortmaker:
 "Fix up files in fs/ and lib/ dirs to only use module.h if they really
  need it.

  These are trivial in scope vs the work done previously.  We now have
  things where any few remaining cleanups can be farmed out to arch or
  subsystem maintainers, and I have done so when possible.  What is
  remaining here represents the bits that don't clearly lie within a
  single arch/subsystem boundary, like the fs dir and the lib dir.

  Some duplicate includes arising from overlapping fixes from
  independent subsystem maintainer submissions are also quashed."

Fix up trivial conflicts due to clashes with other include file cleanups
(including some due to the previous bug.h cleanup pull).

* tag 'module-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  lib: reduce the use of module.h wherever possible
  fs: reduce the use of module.h wherever possible
  includecheck: delete any duplicate instances of module.h
2012-03-24 10:24:31 -07:00
Linus Torvalds
ed2d265d12 The following text was taken from the original review request:
"[RFC - PATCH 0/7] consolidation of BUG support code."
 		https://lkml.org/lkml/2012/1/26/525
 --
 
 The changes shown here are to unify linux's BUG support under
 the one <linux/bug.h> file.  Due to historical reasons, we have
 some BUG code in bug.h and some in kernel.h -- i.e. the support for
 BUILD_BUG in linux/kernel.h predates the addition of linux/bug.h,
 but old code in kernel.h wasn't moved to bug.h at that time.  As
 a band-aid, kernel.h was including <asm/bug.h> to pseudo link them.
 
 This has caused confusion[1] and general yuck/WTF[2] reactions.
 Here is an example that violates the principle of least surprise:
 
       CC      lib/string.o
       lib/string.c: In function 'strlcat':
       lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
       make[2]: *** [lib/string.o] Error 1
       $
       $ grep linux/bug.h lib/string.c
       #include <linux/bug.h>
       $
 
 We've included <linux/bug.h> for the BUG infrastructure and yet we
 still get a compile fail!  [We've not kernel.h for BUILD_BUG_ON.]
 Ugh - very confusing for someone who is new to kernel development.
 
 With the above in mind, the goals of this changeset are:
 
 1) find and fix any include/*.h files that were relying on the
    implicit presence of BUG code.
 2) find and fix any C files that were consuming kernel.h and
    hence relying on implicitly getting some/all BUG code.
 3) Move the BUG related code living in kernel.h to <linux/bug.h>
 4) remove the asm/bug.h from kernel.h to finally break the chain.
 
 During development, the order was more like 3-4, build-test, 1-2.
 But to ensure that git history for bisect doesn't get needless
 build failures introduced, the commits have been reorderd to fix
 the problem areas in advance.
 
 [1]  https://lkml.org/lkml/2012/1/3/90
 [2]  https://lkml.org/lkml/2012/1/17/414
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Merge tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull <linux/bug.h> cleanup from Paul Gortmaker:
 "The changes shown here are to unify linux's BUG support under the one
  <linux/bug.h> file.  Due to historical reasons, we have some BUG code
  in bug.h and some in kernel.h -- i.e.  the support for BUILD_BUG in
  linux/kernel.h predates the addition of linux/bug.h, but old code in
  kernel.h wasn't moved to bug.h at that time.  As a band-aid, kernel.h
  was including <asm/bug.h> to pseudo link them.

  This has caused confusion[1] and general yuck/WTF[2] reactions.  Here
  is an example that violates the principle of least surprise:

      CC      lib/string.o
      lib/string.c: In function 'strlcat':
      lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
      make[2]: *** [lib/string.o] Error 1
      $
      $ grep linux/bug.h lib/string.c
      #include <linux/bug.h>
      $

  We've included <linux/bug.h> for the BUG infrastructure and yet we
  still get a compile fail! [We've not kernel.h for BUILD_BUG_ON.] Ugh -
  very confusing for someone who is new to kernel development.

  With the above in mind, the goals of this changeset are:

  1) find and fix any include/*.h files that were relying on the
     implicit presence of BUG code.
  2) find and fix any C files that were consuming kernel.h and hence
     relying on implicitly getting some/all BUG code.
  3) Move the BUG related code living in kernel.h to <linux/bug.h>
  4) remove the asm/bug.h from kernel.h to finally break the chain.

  During development, the order was more like 3-4, build-test, 1-2.  But
  to ensure that git history for bisect doesn't get needless build
  failures introduced, the commits have been reorderd to fix the problem
  areas in advance.

	[1]  https://lkml.org/lkml/2012/1/3/90
	[2]  https://lkml.org/lkml/2012/1/17/414"

Fix up conflicts (new radeon file, reiserfs header cleanups) as per Paul
and linux-next.

* tag 'bug-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  kernel.h: doesn't explicitly use bug.h, so don't include it.
  bug: consolidate BUILD_BUG_ON with other bug code
  BUG: headers with BUG/BUG_ON etc. need linux/bug.h
  bug.h: add include of it to various implicit C users
  lib: fix implicit users of kernel.h for TAINT_WARN
  spinlock: macroize assert_spin_locked to avoid bug.h dependency
  x86: relocate get/set debugreg fcns to include/asm/debugreg.
2012-03-24 10:08:39 -07:00
Konrad Rzeszutek Wilk
df7a3ee29b xen/acpi: Fix Kconfig dependency on CPU_FREQ
The functions: "acpi_processor_*" sound like they depend on CONFIG_ACPI_PROCESSOR
but in reality they are exposed when CONFIG_CPU_FREQ=[y|m]. As such
update the Kconfig to have this dependency and fix compile issues:

ERROR: "acpi_processor_unregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined!
ERROR: "acpi_processor_notify_smm" [drivers/xen/xen-acpi-processor.ko] undefined!
ERROR: "acpi_processor_register_performance" [drivers/xen/xen-acpi-processor.ko] undefined!
ERROR: "acpi_processor_preregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined!

Note: We still need the CONFIG_ACPI
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-03-24 09:23:06 -04:00
Linus Torvalds
f1d38e423a Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl
Pull sysctl updates from Eric Biederman:

 - Rewrite of sysctl for speed and clarity.

   Insert/remove/Lookup in sysctl are all now O(NlogN) operations, and
   are no longer bottlenecks in the process of adding and removing
   network devices.

   sysctl is now focused on being a filesystem instead of system call
   and the code can all be found in fs/proc/proc_sysctl.c.  Hopefully
   this means the code is now approachable.

   Much thanks is owed to Lucian Grinjincu for keeping at this until
   something was found that was usable.

 - The recent proc_sys_poll oops found by the fuzzer during hibernation
   is fixed.

* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl: (36 commits)
  sysctl: protect poll() in entries that may go away
  sysctl: Don't call sysctl_follow_link unless we are a link.
  sysctl: Comments to make the code clearer.
  sysctl: Correct error return from get_subdir
  sysctl: An easier to read version of find_subdir
  sysctl: fix memset parameters in setup_sysctl_set()
  sysctl: remove an unused variable
  sysctl: Add register_sysctl for normal sysctl users
  sysctl: Index sysctl directories with rbtrees.
  sysctl: Make the header lists per directory.
  sysctl: Move sysctl_check_dups into insert_header
  sysctl: Modify __register_sysctl_paths to take a set instead of a root and an nsproxy
  sysctl: Replace root_list with links between sysctl_table_sets.
  sysctl: Add sysctl_print_dir and use it in get_subdir
  sysctl: Stop requiring explicit management of sysctl directories
  sysctl: Add a root pointer to ctl_table_set
  sysctl: Rewrite proc_sys_readdir in terms of first_entry and next_entry
  sysctl: Rewrite proc_sys_lookup introducing find_entry and lookup_entry.
  sysctl: Normalize the root_table data structure.
  sysctl: Factor out insert_header and erase_header
  ...
2012-03-23 18:08:58 -07:00
Linus Torvalds
dae430c6f6 A bunch of fixes/updates for the AMD side of EDAC including
* MCE decoding updates
 * tree-wide EDAC sweep making pci_device_ids __devinitconst
 * Scrub rate API correction
 * two amd64_edac corrections for K8 boxes and sysfs csrow nodes
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Merge tag 'amd64-edac-updates-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull AMD64 EDAC fixes from Borislav Petkov:
 "A bunch of fixes/updates for the AMD side of EDAC including

   * MCE decoding updates
   * tree-wide EDAC sweep making pci_device_ids __devinitconst
   * Scrub rate API correction
   * two amd64_edac corrections for K8 boxes and sysfs csrow nodes"

* tag 'amd64-edac-updates-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  MCE, AMD: Constify error tables
  MCE, AMD: Correct bank 5 error signatures
  MCE, AMD: Rework NB MCE signatures
  MCE, AMD: Correct VB data error description
  MCE, AMD: Correct ucode patch buffer description
  MCE, AMD: Correct some MC0 error types
  EDAC: Make pci_device_id tables __devinitconst.
  EDAC: Correct scrub rate API
  amd64_edac: Fix K8 revD and later chip select sizes
  amd64_edac: Fix missing csrows sysfs nodes
2012-03-23 17:59:47 -07:00
Linus Torvalds
cf821923ba Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Pull cpufreq updates for 3.4 from Dave Jones: new drivers and some fixes.

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  provide disable_cpufreq() function to disable the API.
  EXYNOS5250: Add support cpufreq for EXYNOS5250
  EXYNOS4X12: Add support cpufreq for EXYNOS4X12
  [CPUFREQ] CPUfreq ondemand: update sampling rate without waiting for next sampling
  [CPUFREQ] Add S3C2416/S3C2450 cpufreq driver
  [CPUFREQ] Fix exposure of ARM_EXYNOS4210_CPUFREQ
  [CPUFREQ] EXYNOS4210: update the name of EXYNOS clock register
  [CPUFREQ] EXYNOS: Initialize locking_frequency with initial frequency
  [CPUFREQ] s3c64xx: Fix mis-cherry pick of VDDINT

Fix up trivial conflicts in Kconfig and Makefile due to just changes
next to each other (OMAP2PLUS changes vs some new EXYNOS cpufreq
drivers).
2012-03-23 17:56:39 -07:00
Linus Torvalds
4416b0eaa3 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Pull cpufreq fixes from Dave Jones:
 "I meant to get some of these in for 3.3 final, but left things too
  late, so I've got two trees this time."

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  cpufreq: OMAP: specify range for voltage scaling
  cpufreq: OMAP: scale voltage along with frequency
  cpufreq: OMAP driver depends CPUfreq tables
2012-03-23 17:51:50 -07:00
Linus Torvalds
24613ff927 Merge branch 'pcmcia' of git://git.linaro.org/people/rmk/linux-arm
Pull #3 ARM updates from Russell King:
 "This adds gpio support to soc_common, allowing an amount of code to be
  deleted from each PCMCIA socket driver for the PXA/SA11x0 SoCs."

* 'pcmcia' of git://git.linaro.org/people/rmk/linux-arm:
  PCMCIA: sa1111: rename sa1111 socket drivers to have sa1111_ prefix.
  PCMCIA: make lubbock socket driver part of sa1111_cs
  PCMCIA: add Kconfig control for building sa11xx_base.c
  PCMCIA: sa1111: jornada720: no need to disable IRQs around sa1111_set_io
  PCMCIA: sa1111: pass along sa1111_pcmcia_configure_socket() failure code
  PCMCIA: soc_common: remove explicit wrprot initialization in socket drivers
  PCMCIA: soc_common: remove soc_pcmcia_*_irqs functions
  PCMCIA: sa11x0: h3600: convert to use new irq/gpio management
  PCMCIA: sa11x0: simpad: convert to use new irq/gpio management
  PCMCIA: sa11x0: shannon: convert to use new irq/gpio management
  PCMCIA: sa11x0: nanoengine: convert reset handling to use GPIO subsystem
  PCMCIA: sa11x0: nanoengine: convert to use new irq/gpio management
  PCMCIA: sa11x0: cerf: convert reset handling to use GPIO subsystem
  PCMCIA: sa11x0: cerf: convert to use new irq/gpio management
  PCMCIA: sa11x0: assabet: convert to use new irq/gpio management
  PCMCIA: sa1111: use new per-socket irq/gpio infrastructure
  PCMCIA: pxa: convert PXA socket drivers to use new irq/gpio management
  PCMCIA: soc_common: add GPIO support for card status signals
  PCMCIA: soc_common: move common initialization into soc_common
2012-03-23 17:37:40 -07:00
Linus Torvalds
0d19eac120 Merge branch 'amba' of git://git.linaro.org/people/rmk/linux-arm
Pull #2 ARM updates from Russell King:
 "Further ARM AMBA primecell updates which aren't included directly in
  the previous commit.  I wanted to keep these separate as they're
  touching stuff outside arch/arm/."

* 'amba' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7362/1: AMBA: Add module_amba_driver() helper macro for amba_driver
  ARM: 7335/1: mach-u300: do away with MMC config files
  ARM: 7280/1: mmc: mmci: Cache MMCICLOCK and MMCIPOWER register
  ARM: 7309/1: realview: fix unconnected interrupts on EB11MP
  ARM: 7230/1: mmc: mmci: Fix PIO read for small SDIO packets
  ARM: 7227/1: mmc: mmci: Prepare for SDIO before setting up DMA job
  ARM: 7223/1: mmc: mmci: Fixup use of runtime PM and use autosuspend
  ARM: 7221/1: mmc: mmci: Change from using legacy suspend
  ARM: 7219/1: mmc: mmci: Change vdd_handler to a generic ios_handler
  ARM: 7218/1: mmc: mmci: Provide option to configure bus signal direction
  ARM: 7217/1: mmc: mmci: Put power register deviations in variant data
  ARM: 7216/1: mmc: mmci: Do not release spinlock in request_end
  ARM: 7215/1: mmc: mmci: Increase max_segs from 16 to 128
2012-03-23 17:36:29 -07:00
Linus Torvalds
56c10bf82c Merge branch 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm
Pull #1 ARM updates from Russell King:
 "This one covers stuff which Arnd is waiting for me to push, as this is
  shared between both our trees and probably other trees elsewhere.

  Essentially, this contains:
   - AMBA primecell device initializer updates - mostly shrinking the
     size of the device declarations in platform code to something more
     reasonable.
   - Getting rid of the NO_IRQ crap from AMBA primecell stuff.
   - Nicolas' idle cleanups.  This in combination with the restart
     cleanups from the last merge window results in a great many
     mach/system.h files being deleted."

Yay: ~80 files, ~2000 lines deleted.

* 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm: (60 commits)
  ARM: remove disable_fiq and arch_ret_to_user macros
  ARM: make entry-macro.S depend on !MULTI_IRQ_HANDLER
  ARM: rpc: make default fiq handler run-time installed
  ARM: make arch_ret_to_user macro optional
  ARM: amba: samsung: use common amba device initializers
  ARM: amba: spear: use common amba device initializers
  ARM: amba: nomadik: use common amba device initializers
  ARM: amba: u300: use common amba device initializers
  ARM: amba: lpc32xx: use common amba device initializers
  ARM: amba: netx: use common amba device initializers
  ARM: amba: bcmring: use common amba device initializers
  ARM: amba: ep93xx: use common amba device initializers
  ARM: amba: omap2: use common amba device initializers
  ARM: amba: integrator: use common amba device initializers
  ARM: amba: realview: get rid of private platform amba_device initializer
  ARM: amba: versatile: get rid of private platform amba_device initializer
  ARM: amba: vexpress: get rid of private platform amba_device initializer
  ARM: amba: provide common initializers for static amba devices
  ARM: amba: make use of -1 IRQs warn
  ARM: amba: u300: get rid of NO_IRQ initializers
  ...
2012-03-23 17:30:49 -07:00
Linus Torvalds
bab2d8c602 OpenRISC changes for 3.4
This series for the OpenRISC architecture consists of mostly trivial fixups.
 The most interesting bits of the series are:
 
 * A fix to the timer code whereby the shortest trigger period is set to
   100 cycles; previously, it was possible to set this to 1 cycle, but by
   the time the register was written, that time had already passed and the
   timer interrupt would not go off until the cycle counter had gone a full
   cycle.
 
 * Allowing a device tree binary to be passed in to the kernel from u-boot.
   The OpenRISC architecture has been recently merged into upstream u-boot,
   so this change gets OpenRISC Linux into sync with that project.
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Merge tag 'for-3.4' of git://openrisc.net/jonas/linux

Pull OpenRISC changes for 3.4 from Jonas Bonn:
 "This series for the OpenRISC architecture consists of mostly trivial
  fixups.  The most interesting bits of the series are:

  * A fix to the timer code whereby the shortest trigger period is set
    to 100 cycles; previously, it was possible to set this to 1 cycle,
    but by the time the register was written, that time had already
    passed and the timer interrupt would not go off until the cycle
    counter had gone a full cycle.

  * Allowing a device tree binary to be passed in to the kernel from
    u-boot.  The OpenRISC architecture has been recently merged into
    upstream u-boot, so this change gets OpenRISC Linux into sync with
    that project."

* tag 'for-3.4' of git://openrisc.net/jonas/linux:
  OpenRISC: Remove memory_start/end prototypes
  openrisc: remove semicolon from KSTK_ defs
  openrisc: sanitize use of orig_gpr11
  openrisc: fix virt_addr_valid
  OpenRISC: Export dump_stack()
  OpenRISC: Select GENERIC_ATOMIC64
  openrisc: Set shortest clock event to 100 ticks
  openrisc: included linux/thread_info.h twice
  OpenRISC: Use set_current_blocked() and block_sigmask()
  OpenRISC: Don't mask signals if we fail to setup signal stack
  OpenRISC: No need to reset handler if SA_ONESHOT
  OpenRISC: Don't reimplement force_sigsegv()
  openrisc: enable passing of flattened device tree pointer
  arch/openrisc/mm/init.c: trivial: use BUG_ON
2012-03-23 17:24:25 -07:00
Linus Torvalds
0e65ae099c Miscellaneous Itanium patches
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Merge tag 'ia64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull miscellaneous Itanium patches from Tony Luck.

The conflicts in arch/ia64/hp/sim/simserial.c were due to patches to
simserial that had alredy been included (with lots of further cleanups)
in the serial tree.

* tag 'ia64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  Documentation/kernel-parameters: remove inttest parameter
  [IA64] Fix ISA IRQ trigger model and polarity setting
  [IA64] Fix a couple of warnings for EXPORT_SYMBOL
  [IA64] Check return from device_register() in cx_device_register()
  [IA64] Fix warning from machine_kexec.c
  [IA64] simserial, bail out when request_irq fails
  [IA64] hpsim, initialize chip for assigned irqs
  [IA64] simserial, include some headers
  [IA64] hpsim, fix SAL handling in fw-emu
  [IA64] genirq fixup for SGI/SN
  [IA64] disable interrupts when exiting from ia64_mca_cmc_int_handler()
2012-03-23 17:19:37 -07:00
Russell King
bba1594d34 Merge branch 'mmci' into amba 2012-03-24 00:10:36 +00:00
Linus Torvalds
2fb9e96cad Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull additional x86 fixes from Peter Anvin:
 - address a long-standing bug related to when a kernel-spawned process
   gets a signal on an i386 kernel compiled without CONFIG_VM86.

 - fix the newly introduced build warning in arch/x86/boot.

 - fix a typo in the i386 system call table which affects building some
   libcs.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-32: Fix endless loop when processing signals for kernel tasks
  x86, boot: Correct CFLAGS for hostprogs
  x86-32: Fix typo for mq_getsetattr in syscall table
2012-03-23 17:10:09 -07:00
Linus Torvalds
8e3ade251b Merge branch 'akpm' (Andrew's patch-bomb)
Merge second batch of patches from Andrew Morton:
 - various misc things
 - core kernel changes to prctl, exit, exec, init, etc.
 - kernel/watchdog.c updates
 - get_maintainer
 - MAINTAINERS
 - the backlight driver queue
 - core bitops code cleanups
 - the led driver queue
 - some core prio_tree work
 - checkpatch udpates
 - largeish crc32 update
 - a new poll() feature for the v4l guys
 - the rtc driver queue
 - fatfs
 - ptrace
 - signals
 - kmod/usermodehelper updates
 - coredump
 - procfs updates

* emailed from Andrew Morton <akpm@linux-foundation.org>: (141 commits)
  seq_file: add seq_set_overflow(), seq_overflow()
  proc-ns: use d_set_d_op() API to set dentry ops in proc_ns_instantiate().
  procfs: speed up /proc/pid/stat, statm
  procfs: add num_to_str() to speed up /proc/stat
  proc: speed up /proc/stat handling
  fs/proc/kcore.c: make get_sparsemem_vmemmap_info() static
  coredump: add VM_NODUMP, MADV_NODUMP, MADV_CLEAR_NODUMP
  coredump: remove VM_ALWAYSDUMP flag
  kmod: make __request_module() killable
  kmod: introduce call_modprobe() helper
  usermodehelper: ____call_usermodehelper() doesn't need do_exit()
  usermodehelper: kill umh_wait, renumber UMH_* constants
  usermodehelper: implement UMH_KILLABLE
  usermodehelper: introduce umh_complete(sub_info)
  usermodehelper: use UMH_WAIT_PROC consistently
  signal: zap_pid_ns_processes: s/SEND_SIG_NOINFO/SEND_SIG_FORCED/
  signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig()
  signal: cosmetic, s/from_ancestor_ns/force/ in prepare_signal() paths
  signal: give SEND_SIG_FORCED more power to beat SIGNAL_UNKILLABLE
  Hexagon: use set_current_blocked() and block_sigmask()
  ...
2012-03-23 16:59:10 -07:00
KAMEZAWA Hiroyuki
e075f59152 seq_file: add seq_set_overflow(), seq_overflow()
It is undocumented but a seq_file's overflow state is indicated by
m->count == m->size.  Add seq_set_overflow() and seq_overflow() to
set/check overflow status explicitly.

Based on an idea from Eric Dumazet.

[akpm@linux-foundation.org: tweak code comment]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 16:58:42 -07:00
Pravin B Shelar
1b26c9b334 proc-ns: use d_set_d_op() API to set dentry ops in proc_ns_instantiate().
The namespace cleanup path leaks a dentry which holds a reference count
on a network namespace.  Keeping that network namespace from being freed
when the last user goes away.  Leaving things like vlan devices in the
leaked network namespace.

If you use ip netns add for much real work this problem becomes apparent
pretty quickly.  It light testing the problem hides because frequently
you simply don't notice the leak.

Use d_set_d_op() so that DCACHE_OP_* flags are set correctly.

This issue exists back to 3.0.

Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Reported-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Cc: David Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 16:58:42 -07:00