From: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> Cope with a quirk of some RTCs (notably ACPI ones) which aren't guaranteed to implement oneshot behavior when they woke the system from sleeep: forcibly disable the alarm, just in case. Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> --- kernel/power/main.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/kernel/power/main.c 2008-07-22 16:38:32.000000000 -0700 +++ b/kernel/power/main.c 2008-07-22 16:39:15.000000000 -0700 @@ -635,6 +635,13 @@ static void __init test_wakealarm(struct } if (status < 0) printk(err_suspend, status); + + /* Some platforms can't detect that the alarm triggered the + * wakeup, or (accordingly) disable it after it afterwards. + * It's supposed to give oneshot behavior; cope. + */ + alm.enabled = false; + rtc_set_alarm(rtc, &alm); } static int __init has_wakealarm(struct device *dev, void *name_ptr) _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
