linux-kernel - [PATCH] pinctrl: fix missing unlock on error in pinctrl_groups

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Date:	Mon, 22 Oct 2012 12:58:09 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	linus.walleij@...aro.org
Cc:	yongjun_wei@...ndmicro.com.cn, linux-kernel@...r.kernel.org
Subject: [PATCH] pinctrl: fix missing unlock on error in pinctrl_groups_show()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Add the missing unlock on the error handle path in function
pinctrl_groups_show().

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/pinctrl/core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 0f1ec9e..2e39c04 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -1061,8 +1061,10 @@ static int pinctrl_groups_show(struct seq_file *s, void *what)
 			seq_printf(s, "group: %s\n", gname);
 			for (i = 0; i < num_pins; i++) {
 				pname = pin_get_name(pctldev, pins[i]);
-				if (WARN_ON(!pname))
+				if (WARN_ON(!pname)) {
+					mutex_unlock(&pinctrl_mutex);
 					return -EINVAL;
+				}
 				seq_printf(s, "pin %d (%s)\n", pins[i], pname);
 			}
 			seq_puts(s, "\n");


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