[media] dt3155v4l: fix incorrect mutex locking

A mutex_unlock was missing in the 'success' path of the open() call,
and also at one error path in the same function.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/staging/media/dt3155v4l/dt3155v4l.c b/drivers/staging/media/dt3155v4l/dt3155v4l.c
index 073b3b35f8f4..57fadead0643 100644
--- a/drivers/staging/media/dt3155v4l/dt3155v4l.c
+++ b/drivers/staging/media/dt3155v4l/dt3155v4l.c
@@ -398,7 +398,7 @@ dt3155_open(struct file *filp)
                 pd->field_count = 0;
                 ret = vb2_queue_init(pd->q);
                 if (ret < 0)
-                        return ret;
+                        goto err_request_irq;
                 INIT_LIST_HEAD(&pd->dmaq);
                 spin_lock_init(&pd->lock);
                 /* disable all irqs, clear all irq flags */
@@ -410,6 +410,7 @@ dt3155_open(struct file *filp)
                         goto err_request_irq;
         }
         pd->users++;
+        mutex_unlock(&pd->mux);
         return 0; /* success */
 err_request_irq:
         kfree(pd->q);