[PATCH] rtc: snvs: Add check for clk_enable()

[Mingwei Zheng]

Add check for the return value of clk_enable() to catch the potential
error.

Fixes: edb190cb1734 ("rtc: snvs: make sure clock is enabled for interrupt handle")
Signed-off-by: Mingwei Zheng <zmw12306@xxxxxxxxx>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@xxxxxxxxx>
---
 drivers/rtc/rtc-snvs.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-snvs.c b/drivers/rtc/rtc-snvs.c
index d82acf1af1fa..62af750e5751 100644
--- a/drivers/rtc/rtc-snvs.c
+++ b/drivers/rtc/rtc-snvs.c
@@ -281,8 +281,11 @@ static irqreturn_t snvs_rtc_irq_handler(int irq, void *dev_id)
 	struct snvs_rtc_data *data = dev_get_drvdata(dev);
 	u32 lpsr;
 	u32 events = 0;
+	int ret;
 
-	clk_enable(data->clk);
+	ret = clk_enable(data->clk);
+	if (ret)
+		return IRQ_NONE;
 
 	regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr);
 
-- 
2.34.1