diff options
Diffstat (limited to 'linux/drivers/media/video/stk-webcam.c')
| -rw-r--r-- | linux/drivers/media/video/stk-webcam.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/linux/drivers/media/video/stk-webcam.c b/linux/drivers/media/video/stk-webcam.c index e18745a67..c6660b363 100644 --- a/linux/drivers/media/video/stk-webcam.c +++ b/linux/drivers/media/video/stk-webcam.c @@ -690,11 +690,15 @@ static int v4l_stk_open(struct inode *inode, struct file *fp) vdev = video_devdata(fp); dev = vdev_to_camera(vdev); - if (dev == NULL || !is_present(dev)) + lock_kernel(); + if (dev == NULL || !is_present(dev)) { + unlock_kernel(); return -ENXIO; + } fp->private_data = vdev; kref_get(&dev->kref); usb_autopm_get_interface(dev->interface); + unlock_kernel(); return 0; } |