joel16/android_kernel_sony_msm8994_rework
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PM / Runtime: Generic resume shouldn't set RPM_ACTIVE unconditionally

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The __pm_generic_resume() function changes the given device's runtime
PM status to RPM_ACTIVE if its driver's callback returns 0, but it
only should do that if the rumtime PM is enabled for the device.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Rafael J. Wysocki 2010-12-24 15:04:06 +01:00
parent 5c1a07ab3e
commit 4b31db8a16
2 changed files with 7 additions and 1 deletions
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2
drivers/base/power/generic_ops.c
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@ -185,7 +185,7 @@ static int __pm_generic_resume(struct device *dev, int event)
return 0;
ret = callback(dev);
if (!ret) {
if (!ret && pm_runtime_enabled(dev)) {
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);

6
include/linux/pm_runtime.h
View File

@ -82,6 +82,11 @@ static inline bool pm_runtime_suspended(struct device *dev)
&& !dev->power.disable_depth;
}
static inline bool pm_runtime_enabled(struct device *dev)
{
return !dev->power.disable_depth;
}
static inline void pm_runtime_mark_last_busy(struct device *dev)
{
ACCESS_ONCE(dev->power.last_busy) = jiffies;
@ -120,6 +125,7 @@ static inline void pm_runtime_put_noidle(struct device *dev) {}
static inline bool device_run_wake(struct device *dev) { return false; }
static inline void device_set_run_wake(struct device *dev, bool enable) {}
static inline bool pm_runtime_suspended(struct device *dev) { return false; }
static inline bool pm_runtime_enabled(struct device *dev) { return false; }
static inline int pm_generic_runtime_idle(struct device *dev) { return 0; }
static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }