We should clear the SPG value update interrupt status once the SPG value
is updated successfully, in case incorrect status validation for next time.

Signed-off-by: Baolin Wang <baolin.w...@linaro.org>
---
 drivers/rtc/rtc-sc27xx.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-sc27xx.c b/drivers/rtc/rtc-sc27xx.c
index 8afba12..6ac5653 100644
--- a/drivers/rtc/rtc-sc27xx.c
+++ b/drivers/rtc/rtc-sc27xx.c
@@ -172,7 +172,8 @@ static int sprd_rtc_lock_alarm(struct sprd_rtc *rtc, bool 
lock)
                return ret;
        }
 
-       return 0;
+       return regmap_write(rtc->regmap, rtc->base + SPRD_RTC_INT_CLR,
+                           SPRD_RTC_SPG_UPD_EN);
 }
 
 static int sprd_rtc_get_secs(struct sprd_rtc *rtc, enum sprd_rtc_reg_types 
type,
-- 
1.7.9.5

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