Chris Feng 0c4cae1bc0
PM: hibernate: Avoid missing wakeup events during hibernation ...
Wakeup events that occur in the hibernation process's
hibernation_platform_enter() cannot wake up the system. Although the
current hibernation framework will execute part of the recovery process
after a wakeup event occurs, it ultimately performs a shutdown operation
because the system does not check the return value of
hibernation_platform_enter(). In short, if a wakeup event occurs before
putting the system into the final low-power state, it will be missed.
To solve this problem, check the return value of
hibernation_platform_enter(). When it returns -EAGAIN or -EBUSY (indicate
the occurrence of a wakeup event), execute the hibernation recovery
process, discard the previously saved image, and ultimately return to the
working state.
Signed-off-by: Chris Feng <chris.feng@mediatek.com >
[ rjw: Rephrase the message printed when going back to the working state ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com >
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