linux-kernel - [PATCH 210/270] pinctrl: fix missing unlock on error in pinctrl_groups

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Message-Id: <1353949160-26803-211-git-send-email-herton.krzesinski@canonical.com>
Date:	Mon, 26 Nov 2012 14:58:20 -0200
From:	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Linus Walleij <linus.walleij@...aro.org>,
	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Subject: [PATCH 210/270] pinctrl: fix missing unlock on error in pinctrl_groups_show()

3.5.7u1 -stable review patch.  If anyone has any objections, please let me know.

------------------

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

commit b4dd784ba8af03bf1f9ee5118c792d7abd4919bd upstream.

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

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
---
 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 0cc053a..5e59c45 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -1069,8 +1069,10 @@ 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");
-- 
1.7.9.5

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