From: Rafael J. Wysocki Date: Sun, 29 Apr 2012 20:52:19 +0000 (+0200) Subject: PM / Sleep: Look for wakeup events in later stages of device suspend X-Git-Tag: firefly_0821_release~3680^2~2794^2~1^2~12 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=52d136cc2cf6659ee247dbcc88c9e7bd7428ad06;p=firefly-linux-kernel-4.4.55.git 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 Acked-by: Greg Kroah-Hartman --- diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index b462c0e341cb..e0fb5b0435a3 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -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)