From: Daniel Mack <zonque@gmail.com>
Date: Fri, 26 Apr 2013 16:57:02 +0000 (+0200)
Subject: pinctrl: fix mutex deadlock in get_pinctrl_dev_from_of_node()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d463f82d22f90096d1352de3837b1602a3410b5d;p=linux-beck.git

pinctrl: fix mutex deadlock in get_pinctrl_dev_from_of_node()

This obvious bug was introduced by d755910b7 ("pinctrl: move subsystem
mutex to pinctrl_dev struct").

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index c3d222ed39a2..5327f35d9b5c 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -129,7 +129,7 @@ struct pinctrl_dev *get_pinctrl_dev_from_of_node(struct device_node *np)
 			return pctldev;
 		}
 
-	mutex_lock(&pinctrldev_list_mutex);
+	mutex_unlock(&pinctrldev_list_mutex);
 
 	return NULL;
 }