linux-kernel - [PATCH, for-next] pinctrl: fix mutex deadlock in get_pinctrl_dev_from_of

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Date:	Fri, 26 Apr 2013 18:57:02 +0200
From:	Daniel Mack <zonque@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	linus.walleij@...aro.org, patrice.chotard@...com,
	Daniel Mack <zonque@...il.com>
Subject: [PATCH, for-next] 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@...il.com>
---
This applies on today's linux-next.

 drivers/pinctrl/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 37cd774..78eae4d 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;
 }
-- 
1.8.1.4

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