linux-toradex.git/drivers/base/sys.c, branch v2.6.32.50

genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier

2011-11-26T17:10:36+00:00

commit 9bab0b7fbaceec47d32db51cd9e59c82fb071f5a upstream

This adds a mechanism to resume selected IRQs during syscore_resume
instead of dpm_resume_noirq.

Under Xen we need to resume IRQs associated with IPIs early enough
that the resched IPI is unmasked and we can therefore schedule
ourselves out of the stop_machine where the suspend/resume takes
place.

This issue was introduced by 676dc3cf5bc3 "xen: Use IRQF_FORCE_RESUME".

Back ported to 2.6.32 (which lacks syscore support) by calling the relavant
resume function directly from sysdev_resume).

v2: Fixed non-x86 build errors.

Signed-off-by: Ian Campbell 
Cc: Rafael J. Wysocki 
Cc: Jeremy Fitzhardinge 
Cc: xen-devel 
Cc: Konrad Rzeszutek Wilk 
Link: http://lkml.kernel.org/r/1318713254.11016.52.camel@dagon.hellion.org.uk
Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

Revert "genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier"

2011-11-09T00:02:23+00:00

This reverts commit 0f12a6ad9fa3a03f2bcee36c9cb704821e244c40.

It causes too many build errors and needs to be done properly.

Reported-by: Jiri Slaby 
Reported-by: Christoph Biedl 
Cc: Ian Campbell 
Cc: Rafael J. Wysocki 
Cc: Jeremy Fitzhardinge 
Cc: xen-devel 
Cc: Konrad Rzeszutek Wilk 
Cc: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier

2011-11-07T20:32:43+00:00

commit 9bab0b7fbaceec47d32db51cd9e59c82fb071f5a upstream

This adds a mechanism to resume selected IRQs during syscore_resume
instead of dpm_resume_noirq.

Under Xen we need to resume IRQs associated with IPIs early enough
that the resched IPI is unmasked and we can therefore schedule
ourselves out of the stop_machine where the suspend/resume takes
place.

This issue was introduced by 676dc3cf5bc3 "xen: Use IRQF_FORCE_RESUME".

Back ported to 2.6.32 (which lacks syscore support) by calling the relavant
resume function directly from sysdev_resume).

Signed-off-by: Ian Campbell 
Cc: Rafael J. Wysocki 
Cc: Jeremy Fitzhardinge 
Cc: xen-devel 
Cc: Konrad Rzeszutek Wilk 
Link: http://lkml.kernel.org/r/1318713254.11016.52.camel@dagon.hellion.org.uk
Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

driver core: sysdev: do not send KOBJ_ADD uevent if kobject_init_and_add fails

2009-07-28T20:45:22+00:00

If kobject_init_and_add fails, sysdev_register should not send KOBJ_ADD
uevent to userspace.

Signed-off-by: Xiaotian Feng 
Signed-off-by: Greg Kroah-Hartman

driver core: fix gcc 4.3.3 warnings about string literals

2009-06-16T04:30:25+00:00

This removes the
	warning: format not a string literal and no format arguments
warnings in the driver core that gcc 4.3.3 complains about.

Signed-off-by: Greg Kroah-Hartman

driver-core: make sysdev_class_register check kobject_set_name return value

2009-06-16T04:30:24+00:00

sysdev_class_register should check the kobject_set_name return value.

Add the return value checking code.

Signed-off-by: Dave Young 
Signed-off-by: Greg Kroah-Hartman

PM: Warn if interrupts are enabled during suspend-resume of sysdevs

2009-06-12T19:32:29+00:00

Sysdevs have to be suspended and resumed with interrupts disabled and
things usually break in a way that's difficult to debug if one of
sysdev drivers enables interrupts by mistake during suspend or
resume.  Add extra checks that will generate warnings in such cases.

Signed-off-by: Rafael J. Wysocki

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-04-03T22:24:35+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
  trivial: Update my email address
  trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
  trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
  trivial: Fix misspelling of "Celsius".
  trivial: remove unused variable 'path' in alloc_file()
  trivial: fix a pdlfush -> pdflush typo in comment
  trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
  trivial: wusb: Storage class should be before const qualifier
  trivial: drivers/char/bsr.c: Storage class should be before const qualifier
  trivial: h8300: Storage class should be before const qualifier
  trivial: fix where cgroup documentation is not correctly referred to
  trivial: Give the right path in Documentation example
  trivial: MTD: remove EOL from MODULE_DESCRIPTION
  trivial: Fix typo in bio_split()'s documentation
  trivial: PWM: fix of #endif comment
  trivial: fix typos/grammar errors in Kconfig texts
  trivial: Fix misspelling of firmware
  trivial: cgroups: documentation typo and spelling corrections
  trivial: Update contact info for Jochen Hein
  trivial: fix typo "resgister" -> "register"
  ...

PM: Rework handling of interrupts during suspend-resume

2009-03-30T19:46:54+00:00

Use the functions introduced in by the previous patch,
suspend_device_irqs(), resume_device_irqs() and check_wakeup_irqs(),
to rework the handling of interrupts during suspend (hibernation) and
resume.  Namely, interrupts will only be disabled on the CPU right
before suspending sysdevs, while device drivers will be prevented
from receiving interrupts, with the help of the new helper function,
before their "late" suspend callbacks run (and analogously during
resume).

In addition, since the device interrups are now disabled before the
CPU has turned all interrupts off and the CPU will ACK the interrupts
setting the IRQ_PENDING bit for them, check in sysdev_suspend() if
any wake-up interrupts are pending and abort suspend if that's the
case.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Ingo Molnar

trivial: fix typo "thier" -> "their"

2009-03-30T13:21:57+00:00

Signed-off-by: Uwe Kleine-Koenig 
Signed-off-by: Jiri Kosina