V4L/DVB (8613): v4l: move BKL down to the driver level.

The BKL is now moved from the video_open function in v4l2-dev.c to the
various drivers. It seems about a third of the drivers already has a
lock of some sort protecting the open(), another third uses
video_exclusive_open (yuck!) and the last third required adding the
BKL in their open function.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c
index b977116a0dd9..b76295a5be8b 100644
--- a/drivers/media/video/usbvision/usbvision-video.c
+++ b/drivers/media/video/usbvision/usbvision-video.c
@@ -367,6 +367,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 
         PDEBUG(DBG_IO, "open");
 
+        lock_kernel();
         usbvision_reset_powerOffTimer(usbvision);
 
         if (usbvision->user)
@@ -424,6 +425,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file)
         usbvision_empty_framequeues(usbvision);
 
         PDEBUG(DBG_IO, "success");
+        unlock_kernel();
         return errCode;
 }