diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2010-12-16 10:16:50 +0530 |
|---|---|---|
| committer | Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com> | 2011-01-18 13:14:04 +0100 |
| commit | 3f0055b3ba56385286b8d2cdaa17f717217b1685 (patch) | |
| tree | 3d1285f58ceebf282603bcecfa760185ef9c5fc9 /Documentation | |
| parent | ee1b909f8be8901b60da0ccf34a8e3857b30c6ce (diff) | |
PM / Runtime: Fix pm_runtime_suspended()
There are some situations (e.g. in __pm_generic_call()), where
pm_runtime_suspended() is used to decide whether or not to execute
a device's (system) ->suspend() callback. The callback is not
executed if pm_runtime_suspended() returns true, but it does so
for devices that don't even support runtime PM, because the
power.disable_depth device field is ignored by it. This leads to
problems (i.e. devices are not suspened when they should), so rework
pm_runtime_suspended() so that it returns false if the device's
power.disable_depth field is different from zero.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
ST-Ericsson Linux next: -
ST-Ericsson ID: AP317082
ST-Ericsson FOSS-OUT ID: -
Change-Id: I63631379679b891230a9d3f473d14534e02eea47
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/12724
Tested-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/power/runtime_pm.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 2292d744509..ffe55ffa540 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -396,8 +396,8 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: zero) bool pm_runtime_suspended(struct device *dev); - - return true if the device's runtime PM status is 'suspended', or false - otherwise + - return true if the device's runtime PM status is 'suspended' and its + 'power.disable_depth' field is equal to zero, or false otherwise void pm_runtime_allow(struct device *dev); - set the power.runtime_auto flag for the device and decrease its usage |