linux-toradex.git/drivers/base/power/resume.c, branch v2.6.23.14

PM: Do not check parent state in suspend and resume core code

2007-07-11T23:09:02+00:00

The checks if the device's parent is in the right state done in
drivers/base/power/suspend.c and drivers/base/power/resume.c serve no particular
purpose, since if the parent is in a wrong power state, the device's suspend or
resume callbacks are supposed to return an error anyway.  Moreover, they are
also useless from the sanity checking point of view, because they rely on the
code being checked to set dev->parent->power.power_state.event appropriately,
which need not happen if that code is buggy.  For these reasons they can be
removed.

Signed-off-by: Rafael J. Wysocki 
Acked-by: David Brownell 
Signed-off-by: Greg Kroah-Hartman

PM: Remove prev_state from struct dev_pm_info

2007-07-11T23:09:02+00:00

The prev_state member of struct dev_pm_info (defined in include/linux/pm.h) is
only used during a resume to check if the device's state before the suspend was
'off', in which case the device is not resumed.  However, in such cases the
decision whether or not to resume the device should be made on the driver level
and the resume callbacks from the device's bus and class should be executed
anyway (the may be needed for some things other than just powering on the
device).

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

PM: Remove pm_parent from struct dev_pm_info

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

The pm_parent member of struct dev_pm_info (defined in include/linux/pm.h) is
only used to check if the device's parent is in the right state while the
device is being suspended or resumed.  However, this can be done just as well
with the help of the parent pointer in struct device, so pm_parent can be
removed along with some code that handles it.

Signed-off-by: Rafael J. Wysocki 
Acked-by: David Brownell 
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

Driver core: add suspend() and resume() to struct device_type

2007-04-27T17:57:29+00:00

Driver core: add suspend() and resume() to struct device_type

In cases when there are devices of different types in the same class
we can't use class's implementation of suspend and resume methods and
we need to add them to struct device_type instead.

Also fix error handling in resume code (we should not try to call
class's resume method iof bus's resume method for the device failed.

Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Driver core: fix comments in drivers/base/power/resume.c

2006-09-26T04:08:39+00:00

Driver core: fix comments in drivers/base/power/resume.c

Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

PM: device_suspend/resume may sleep

2006-09-26T04:08:38+00:00

This adds warning when someone tries them from atomic context.

Signed-off-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

Suspend infrastructure cleanup and extension

2006-09-26T04:08:36+00:00

Allow devices to participate in the suspend process more intimately,
in particular, allow the final phase (with interrupts disabled) to
also be open to normal devices, not just system devices.

Also, allow classes to participate in device suspend.

Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

[PATCH] core: use list_move()

2006-06-26T16:58:17+00:00

This patch converts the combination of list_del(A) and list_add(A, B) to
list_move(A, B).

Cc: Greg Kroah-Hartman 
Cc: Ram Pai 
Signed-off-by: Akinobu Mita 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Enable minimal per-device resume tracing

2006-06-24T21:47:59+00:00

This is the minimal resume trace code to find which device resume (if
any) results in problems.  Usually, you'd use the information this
generates as a starting point to adding more fine-grained trace event
points.

Signed-off-by: Linus Torvalds