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path: root/drivers/rtc/class.c
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Diffstat (limited to 'drivers/rtc/class.c')
-rw-r--r--drivers/rtc/class.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index c404b61386bf..09b4437b3e61 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -117,6 +117,7 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
struct module *owner)
{
struct rtc_device *rtc;
+ struct rtc_wkalrm alrm;
int id, err;
if (idr_pre_get(&rtc_idr, GFP_KERNEL) == 0) {
@@ -166,6 +167,12 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
rtc->pie_timer.function = rtc_pie_update_irq;
rtc->pie_enabled = 0;
+ /* Check to see if there is an ALARM already set in hw */
+ err = __rtc_read_alarm(rtc, &alrm);
+
+ if (!err && !rtc_valid_tm(&alrm.time))
+ rtc_set_alarm(rtc, &alrm);
+
strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
dev_set_name(&rtc->dev, "rtc%d", id);