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authorHans Verkuil <hverkuil@xs4all.nl>2008-07-30 08:43:36 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-12 09:36:47 -0200
commitd56dc61265d2527a63ab5b0f03199a43cd89ca36 (patch)
treebea2a5b12fc120ca6e8797b2f16ad9696e0f25dd /drivers/media/video/stk-webcam.c
parent95f73c5b57990c97047c200b8746ab62a360c5bc (diff)
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>
Diffstat (limited to 'drivers/media/video/stk-webcam.c')
-rw-r--r--drivers/media/video/stk-webcam.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/video/stk-webcam.c b/drivers/media/video/stk-webcam.c
index ad36af30e099..6b1ef5dc562c 100644
--- a/drivers/media/video/stk-webcam.c
+++ b/drivers/media/video/stk-webcam.c
@@ -689,11 +689,15 @@ 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;
}

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