[media] v4l2-dev.c: Move video_put() after debug printk

It is possible that video_put() releases video_device struct,
provoking a panic when debug printk wants to get video_device node name.

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

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 625248585c85..07aeafca9eaa 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -478,12 +478,12 @@ static int v4l2_open(struct inode *inode, struct file *filp)
         }
 
 err:
-        /* decrease the refcount in case of an error */
-        if (ret)
-                video_put(vdev);
         if (vdev->debug)
                 printk(KERN_DEBUG "%s: open (%d)\n",
                         video_device_node_name(vdev), ret);
+        /* decrease the refcount in case of an error */
+        if (ret)
+                video_put(vdev);
         return ret;
 }
 
@@ -500,12 +500,12 @@ static int v4l2_release(struct inode *inode, struct file *filp)
                 if (test_bit(V4L2_FL_LOCK_ALL_FOPS, &vdev->flags))
                         mutex_unlock(vdev->lock);
         }
-        /* decrease the refcount unconditionally since the release()
-           return value is ignored. */
-        video_put(vdev);
         if (vdev->debug)
                 printk(KERN_DEBUG "%s: release\n",
                         video_device_node_name(vdev));
+        /* decrease the refcount unconditionally since the release()
+           return value is ignored. */
+        video_put(vdev);
         return ret;
 }