[PATCH] rtc: mxc_v2: Add missing clk_disable_unprepare()

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The call to clk_disable_unprepare() is left out in the error handling of
devm_rtc_allocate_device. Add it back.

Fixes: 5490a1e018a4 ("rtc: mxc_v2: fix possible race condition")
Signed-off-by: GUO Zihua <guozihua@xxxxxxxxxx>
---
 drivers/rtc/rtc-mxc_v2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c
index 5e0383401629..f6d2ad91ff7a 100644
--- a/drivers/rtc/rtc-mxc_v2.c
+++ b/drivers/rtc/rtc-mxc_v2.c
@@ -336,8 +336,10 @@ static int mxc_rtc_probe(struct platform_device *pdev)
 	}
 
 	pdata->rtc = devm_rtc_allocate_device(&pdev->dev);
-	if (IS_ERR(pdata->rtc))
+	if (IS_ERR(pdata->rtc)) {
+		clk_disable_unprepare(pdata->clk);
 		return PTR_ERR(pdata->rtc);
+	}
 
 	pdata->rtc->ops = &mxc_rtc_ops;
 	pdata->rtc->range_max = U32_MAX;
-- 
2.17.1




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