From: Dan Carpenter <error27@gmail.com>
Date: Wed, 11 Aug 2010 18:01:46 +0000 (+0200)
Subject: synclink: add mutex_unlock() on error path
X-Git-Tag: firefly_0821_release~9833^2~666^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=80d04f22b0869a1145b36a90a83a79603ac92be8;p=firefly-linux-kernel-4.4.55.git

synclink: add mutex_unlock() on error path

There is a path which still holds its mutex here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index fef80cfcab5c..e63b830c86cc 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -691,8 +691,10 @@ static int open(struct tty_struct *tty, struct file *filp)
 	if (info->port.count == 1) {
 		/* 1st open on this device, init hardware */
 		retval = startup(info);
-		if (retval < 0)
+		if (retval < 0) {
+			mutex_unlock(&info->port.mutex);
 			goto cleanup;
+		}
 	}
 	mutex_unlock(&info->port.mutex);
 	retval = block_til_ready(tty, filp, info);