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, 0 insertions, 3 deletions

diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 155fdec9ac7d..6b9f3cb0de98 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -116,7 +116,6 @@ static int video_open(struct inode *inode, struct file *file)
 
         if (minor >= VIDEO_NUM_DEVICES)
                 return -ENODEV;
-        lock_kernel();
         mutex_lock(&videodev_lock);
         vfl = video_device[minor];
         if (vfl == NULL) {
@@ -126,7 +125,6 @@ static int video_open(struct inode *inode, struct file *file)
                 vfl = video_device[minor];
                 if (vfl == NULL) {
                         mutex_unlock(&videodev_lock);
-                        unlock_kernel();
                         return -ENODEV;
                 }
         }
@@ -140,7 +138,6 @@ static int video_open(struct inode *inode, struct file *file)
         }
         fops_put(old_fops);
         mutex_unlock(&videodev_lock);
-        unlock_kernel();
         return err;
 }