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PM: Add facility for advanced testing of async suspend/resume

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Add configuration switch CONFIG_PM_ADVANCED_DEBUG for compiling in
extra PM debugging/testing code allowing one to access some
PM-related attributes of devices from the user space via sysfs.

If CONFIG_PM_ADVANCED_DEBUG is set, add sysfs attribute power/async
for every device allowing the user space to access the device's
power.async_suspend flag and modify it, if desired.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Rafael J. Wysocki 2010-01-23 22:25:23 +01:00
parent 0e06b4a891
commit 5a2eb8585f
4 changed files with 100 additions and 0 deletions
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11
include/linux/device.h
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@ -478,6 +478,17 @@ static inline void device_enable_async_suspend(struct device *dev)
dev->power.async_suspend = true;
}
static inline void device_disable_async_suspend(struct device *dev)
{
if (dev->power.status == DPM_ON)
dev->power.async_suspend = false;
}
static inline bool device_async_suspend_enabled(struct device *dev)
{
return !!dev->power.async_suspend;
}
void driver_init(void);
/*