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-rw-r--r--drivers/rtc/rtc-sh.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index e9e0934380b..198b9f22fbf 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -492,10 +492,10 @@ static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
spin_lock_irq(&rtc->lock);
- /* disable alarm interrupt and clear flag */
+ /* disable alarm interrupt and clear the alarm flag */
rcr1 = readb(rtc->regbase + RCR1);
- rcr1 &= ~RCR1_AF;
- writeb(rcr1 & ~RCR1_AIE, rtc->regbase + RCR1);
+ rcr1 &= ~(RCR1_AF|RCR1_AIE);
+ writeb(rcr1, rtc->regbase + RCR1);
rtc->rearm_aie = 0;
@@ -510,8 +510,10 @@ static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm)
mon += 1;
sh_rtc_write_alarm_value(rtc, mon, RMONAR);
- /* Restore interrupt activation status */
- writeb(rcr1, rtc->regbase + RCR1);
+ if (wkalrm->enabled) {
+ rcr1 |= RCR1_AIE;
+ writeb(rcr1, rtc->regbase + RCR1);
+ }
spin_unlock_irq(&rtc->lock);