linux-kernel - [PATCH 2/5] rtc: sc27xx: Clear SPG value update interrupt status

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Message-Id: <43a12635d57b134fc55d664af8f715b31bbc5f3b.1539851865.git.baolin.wang@linaro.org>
Date:   Thu, 18 Oct 2018 16:52:27 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     a.zummo@...ertech.it, alexandre.belloni@...tlin.com
Cc:     broonie@...nel.org, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org, baolin.wang@...aro.org
Subject: [PATCH 2/5] rtc: sc27xx: Clear SPG value update interrupt status

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.wang@...aro.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