[PATCH 3.16 014/217] [media] xc2028: unlock on error in xc2028_set_config()

[Ben Hutchings]

3.16.35-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Dan Carpenter <dan.carpen...@oracle.com>

commit 210bd104c6acd31c3c6b8b075b3f12d4a9f6b60d upstream.

We have to unlock before returning -ENOMEM.

Fixes: 8dfbcc4351a0 ('[media] xc2028: avoid use after free')

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/media/tuners/tuner-xc2028.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/media/tuners/tuner-xc2028.c
+++ b/drivers/media/tuners/tuner-xc2028.c
@@ -1407,8 +1407,10 @@ static int xc2028_set_config(struct dvb_
        memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
        if (p->fname) {
                priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
-               if (priv->ctrl.fname == NULL)
-                       return -ENOMEM;
+               if (priv->ctrl.fname == NULL) {
+                       rc = -ENOMEM;
+                       goto unlock;
+               }
        }
 
        /*
@@ -1440,6 +1442,7 @@ static int xc2028_set_config(struct dvb_
                } else
                        priv->state = XC2028_WAITING_FIRMWARE;
        }
+unlock:
        mutex_unlock(&priv->lock);
 
        return rc;