diff options
Diffstat (limited to 'drivers/rtc/interface.c')
| -rw-r--r-- | drivers/rtc/interface.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 5b2717f5dafa..45bfc28ee3aa 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -30,6 +30,14 @@ static int __rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm) else { memset(tm, 0, sizeof(struct rtc_time)); err = rtc->ops->read_time(rtc->dev.parent, tm); + if (err < 0) { + dev_err(&rtc->dev, "read_time: fail to read\n"); + return err; + } + + err = rtc_valid_tm(tm); + if (err < 0) + dev_err(&rtc->dev, "read_time: rtc_time isn't valid\n"); } return err; } @@ -891,11 +899,24 @@ again: if (next) { struct rtc_wkalrm alarm; int err; + int retry = 3; + alarm.time = rtc_ktime_to_tm(next->expires); alarm.enabled = 1; +reprogram: err = __rtc_set_alarm(rtc, &alarm); if (err == -ETIME) goto again; + else if (err) { + if (retry-- > 0) + goto reprogram; + + timer = container_of(next, struct rtc_timer, node); + timerqueue_del(&rtc->timerqueue, &timer->node); + timer->enabled = 0; + dev_err(&rtc->dev, "__rtc_set_alarm: err=%d\n", err); + goto again; + } } else rtc_alarm_disable(rtc); |