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PM / Sleep: Look for wakeup events in later stages of device suspend 

Currently, the device suspend code in drivers/base/power/main.c
only checks if there have been any wakeup events, and therefore the
ongoing system transition to a sleep state should be aborted, during
the first (i.e. "suspend") device suspend phase.  However, wakeup
events may be reported later as well, so it's reasonable to look for
them in the in the subsequent (i.e. "late suspend" and "suspend
noirq") phases.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Rafael J. Wysocki 2012-04-29 22:52:19 +02:00
parent 5a21d489fd
commit 52d136cc2c
1 changed files with 10 additions and 0 deletions
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10
drivers/base/power/main.c
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@ -889,6 +889,11 @@ static int dpm_suspend_noirq(pm_message_t state)
if (!list_empty(&dev->power.entry))
list_move(&dev->power.entry, &dpm_noirq_list);
put_device(dev);
if (pm_wakeup_pending()) {
error = -EBUSY;
break;
}
}
mutex_unlock(&dpm_list_mtx);
if (error)
@ -962,6 +967,11 @@ static int dpm_suspend_late(pm_message_t state)
if (!list_empty(&dev->power.entry))
list_move(&dev->power.entry, &dpm_late_early_list);
put_device(dev);
if (pm_wakeup_pending()) {
error = -EBUSY;
break;
}
}
mutex_unlock(&dpm_list_mtx);
if (error)