commit: b4dd784ba8af03bf1f9ee5118c792d7abd4919bd
From: Wei Yongjun <[email protected]>
Date: Mon, 22 Oct 2012 12:58:09 +0800
Subject: pinctrl: fix missing unlock on error in pinctrl_groups_show()

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

Cc: [email protected]
Signed-off-by: Wei Yongjun <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
---
 drivers/pinctrl/core.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

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");
-- 
1.7.3.4
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