linux-toradex.git/drivers/base/power/runtime.c, branch v2.6.32.51

PM / Runtime: Fix lockdep warning in __pm_runtime_set_status()

2009-12-18T22:03:10+00:00

commit bab636b921017f0db6e0c2979438f50b898a9808 upstream.

Lockdep complains about taking the parent lock in
__pm_runtime_set_status(), so mark it as nested.

Signed-off-by: Rafael J. Wysocki 
Reported-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

PM: fix irq enable/disable in runtime PM code

2009-11-29T15:51:27+00:00

This patch (as1305) fixes a bug in the irq-enable settings and removes
some related overhead in the runtime PM code.

	In __pm_runtime_resume(), within the scope of the original
	spin_lock_irq(), we know that irqs are disabled.  There's no
	reason to go through a pair of enable/disable cycles when
	acquiring and releasing the parent's lock.

	In __pm_runtime_set_status(), irqs are already disabled when
	the parent's lock is acquired, and they must remain disabled
	when it is released.

Signed-off-by: Alan Stern 
Signed-off-by: Rafael J. Wysocki

PM: Remove some debug messages producing too much noise

2009-11-03T10:18:18+00:00

pm_runtime_idle() is somewhat noisy. Remove debug prints.

Signed-off-by: Pavel Machek 
Signed-off-by: Rafael J. Wysocki

PM: Introduce core framework for run-time PM of I/O devices (rev. 17)

2009-08-22T22:04:44+00:00

Introduce a core framework for run-time power management of I/O
devices.  Add device run-time PM fields to 'struct dev_pm_info'
and device run-time PM callbacks to 'struct dev_pm_ops'.  Introduce
a run-time PM workqueue and define some device run-time PM helper
functions at the core level.  Document all these things.

Special thanks to Alan Stern for his help with the design and
multiple detailed reviews of the pereceding versions of this patch
and to Magnus Damm for testing feedback.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Magnus Damm

PM: remove deprecated dpm_runtime_* routines

2007-07-18T22:49:49+00:00

This patch (as933) removes the deprecated dpm_runtime_suspend() and
dpm_runtime_resume() routines from the PM core.  The only user of
those routines is the PCMCIA ds driver; local replacements are added.

Signed-off-by: Alan Stern 
CC: Dominik Brodowski 
Signed-off-by: Greg Kroah-Hartman

Power Management: use mutexes instead of semaphores

2007-07-11T23:09:01+00:00

The Power Management code uses semaphores as mutexes.  Use the mutex API
instead of the (binary) semaphores.

Signed-off-by: Matthias Kaehlcke 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] pcmcia: merge suspend into device model

2006-01-05T23:02:03+00:00

Merge the suspend and resume methods for 16-bit PCMCIA cards into the
device model -- for both runtime power management and suspend to ram/disk.

Bugfix in ds.c by Richard Purdie
Signed-Off-By: Richard Purdie 

Signed-off-by: Dominik Brodowski

[PATCH] drivers/base/power/runtime.c: #if 0 dpm_set_power_state()

2006-01-05T00:18:10+00:00

This patch #if 0's an unused global function.

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] root hub changes (lesser half)

2005-10-28T23:47:40+00:00

This patch collects various small updates related to root hubs, to shrink
later patches which build on them.

  - For root hub suspend/resume support:
     * Make the existing usb_hcd_resume_root_hub() routine respect pmcore
       locking, exporting and using the dpm_runtime_resume() method.
     * Add a new usb_hcd_suspend_root_hub() to pair with that routine.
       (Essential to make OHCI autosuspend behave again...)
     * HC_SUSPENDED by itself only refers to the root hub's downstream ports.
       So let HCDs see root hub URBs unless the parent device is suspended.

  - Remove an assertion we no longer need (and now, also don't want).

  - Generic suspend/resume updates to work better with swsusp.
     * Ignore the FREEZE vs SUSPEND distinction for hardware; trying to
       use it breaks the swsusp snapshots it's supposed to help (sigh).
     * On resume, mark devices as resumed right away, but then
       do nothing else if the device is marked NOTATTACHED.

These changes shouldn't be very noticable by themselves.

Signed-off-by: David Brownell 
Signed-off-by: Greg Kroah-Hartman 

 drivers/base/power/runtime.c |    1
 drivers/usb/core/hcd.c       |   64 ++++++++++++++++++++++++++++++++++++++-----
 drivers/usb/core/hcd.h       |    1
 drivers/usb/core/hub.c       |   45 ++++++++++++++++++++++++------
 drivers/usb/core/usb.c       |   20 +++++++++----
 drivers/usb/core/usb.h       |    1
 6 files changed, 111 insertions(+), 21 deletions(-)

[PATCH] swsusp: switch pm_message_t to struct

2005-09-05T07:06:16+00:00

This adds type-checking to pm_message_t, so that people can't confuse it
with int or u32.  It also allows us to fix "disk yoyo" during suspend (disk
spinning down/up/down).

[We've tried that before; since that cpufreq problems were fixed and I've
tried make allyes config and fixed resulting damage.]

Signed-off-by: Pavel Machek 
Signed-off-by: Alexander Nyberg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds