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/stv680.c b/drivers/media/video/stv680.c
index dce94743945..b21a8d6827c 100644
--- a/drivers/media/video/stv680.c
+++ b/drivers/media/video/stv680.c
@@ -1086,6 +1086,7 @@ static int stv_open (struct inode *inode, struct file *file)
 	int err = 0;
 
 	/* we are called with the BKL held */
+	lock_kernel();
 	stv680->user = 1;
 	err = stv_init (stv680);	/* main initialization routine for camera */
 
@@ -1099,6 +1100,7 @@ static int stv_open (struct inode *inode, struct file *file)
 	}
 	if (err)
 		stv680->user = 0;
+	unlock_kernel();
 
 	return err;
 }