[PATCH] rtc: stm32: add missed clk_disable_unprepare in error path of resume

[Chuhong Yuan]

The resume() forgets to call clk_disable_unprepare() when failed.
Add the missed call to fix it.

Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
---
 drivers/rtc/rtc-stm32.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
index 781cabb2afca..d774aa18f57a 100644
--- a/drivers/rtc/rtc-stm32.c
+++ b/drivers/rtc/rtc-stm32.c
@@ -897,8 +897,11 @@ static int stm32_rtc_resume(struct device *dev)
 	}
 
 	ret = stm32_rtc_wait_sync(rtc);
-	if (ret < 0)
+	if (ret < 0) {
+		if (rtc->data->has_pclk)
+			clk_disable_unprepare(rtc->pclk);
 		return ret;
+	}
 
 	if (device_may_wakeup(dev))
 		return disable_irq_wake(rtc->irq_alarm);
-- 
2.24.0