rtc: alarm: Don't use save_time_delta.

Change-Id: Iaefeca497de02fe36b7f5d79075912f6e349ec53
Signed-off-by: Arve Hjønnevåg <arve@android.com>
diff --git a/drivers/rtc/alarm.c b/drivers/rtc/alarm.c
index 18492fd..084ef64 100644
--- a/drivers/rtc/alarm.c
+++ b/drivers/rtc/alarm.c
@@ -373,8 +373,8 @@
 	struct rtc_time     rtc_current_rtc_time;
 	unsigned long       rtc_current_time;
 	unsigned long       rtc_alarm_time;
-	struct timespec     rtc_current_timespec;
 	struct timespec     rtc_delta;
+	struct timespec     wall_time;
 	struct alarm_queue *wakeup_queue = NULL;
 	struct alarm_queue *tmp_queue = NULL;
 
@@ -398,10 +398,11 @@
 		wakeup_queue = tmp_queue;
 	if (wakeup_queue) {
 		rtc_read_time(alarm_rtc_dev, &rtc_current_rtc_time);
-		rtc_current_timespec.tv_nsec = 0;
-		rtc_tm_to_time(&rtc_current_rtc_time,
-			       &rtc_current_timespec.tv_sec);
-		save_time_delta(&rtc_delta, &rtc_current_timespec);
+		getnstimeofday(&wall_time);
+		rtc_tm_to_time(&rtc_current_rtc_time, &rtc_current_time);
+		set_normalized_timespec(&rtc_delta,
+					wall_time.tv_sec - rtc_current_time,
+					wall_time.tv_nsec);
 
 		rtc_alarm_time = timespec_sub(ktime_to_timespec(
 			hrtimer_get_expires(&wakeup_queue->timer)),