From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 14 Mar 2018 07:37:19 +0000
Subject: [PATCH] rtc: mxc_v2: unlock on error in mxc_rtc_set_alarm()
Message-Id: <20180314073719.GA2470@mwanda>
List-Id: <kernel-janitors.vger.kernel.org>
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To: Alessandro Zummo <a.zummo@towertech.it>, Patrick Bruenn <p.bruenn@beckhoff.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>, linux-rtc@vger.kernel.org, kernel-janitors@vger.kernel.org

We need to unlock if time is more than U32_MAX.

Fixes: 83c880f79e88 ("rtc: add mxc driver for i.MX53 SRTC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c
index 9e14efb990b2..90c9ab68688f 100644
--- a/drivers/rtc/rtc-mxc_v2.c
+++ b/drivers/rtc/rtc-mxc_v2.c
@@ -243,12 +243,14 @@ static int mxc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
 	const time64_t time = rtc_tm_to_time64(&alrm->time);
 	struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
-	int ret = mxc_rtc_lock(pdata);
+	int ret;
 
+	ret = mxc_rtc_lock(pdata);
 	if (ret)
 		return ret;
 
 	if (time > U32_MAX) {
+		mxc_rtc_unlock(pdata);
 		dev_err(dev, "Hopefully I am out of service by then :-(\n");
 		return -EINVAL;
 	}