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authorHans Verkuil <hverkuil@xs4all.nl>2008-07-30 15:43:36 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-12 15:36:47 +0400
commitd56dc61265d2527a63ab5b0f03199a43cd89ca36 (patch)
treebea2a5b12fc120ca6e8797b2f16ad9696e0f25dd /drivers/media/video/se401.c
parent95f73c5b57990c97047c200b8746ab62a360c5bc (diff)
downloadlinux-d56dc61265d2527a63ab5b0f03199a43cd89ca36.tar.xz
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/se401.c')
-rw-r--r--drivers/media/video/se401.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/video/se401.c b/drivers/media/video/se401.c
index acceed5d04ae..d16bbf0d2783 100644
--- a/drivers/media/video/se401.c
+++ b/drivers/media/video/se401.c
@@ -936,14 +936,18 @@ static int se401_open(struct inode *inode, struct file *file)
struct usb_se401 *se401 = (struct usb_se401 *)dev;
int err = 0;
- if (se401->user)
+ lock_kernel();
+ if (se401->user) {
+ unlock_kernel();
return -EBUSY;
+ }
se401->fbuf = rvmalloc(se401->maxframesize * SE401_NUMFRAMES);
if (se401->fbuf)
file->private_data = dev;
else
err = -ENOMEM;
se401->user = !err;
+ unlock_kernel();
return err;
}