diff options
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/alarmtimer.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 8d9f13d847f0..4657cb8e8b1f 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -290,6 +290,17 @@ static int alarmtimer_suspend(struct device *dev) rtc_timer_cancel(rtc, &rtctimer); rtc_read_time(rtc, &tm); now = rtc_tm_to_ktime(tm); + + /* + * If the RTC alarm timer only supports a limited time offset, set the + * alarm time to the maximum supported value. + * The system may wake up earlier (possibly much earlier) than expected + * when the alarmtimer runs. This is the best the kernel can do if + * the alarmtimer exceeds the time that the rtc device can be programmed + * for. + */ + min = rtc_bound_alarmtime(rtc, min); + now = ktime_add(now, min); /* Set alarm, if in the past reject suspend briefly to handle */ |