diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2008-07-30 15:43:36 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 15:36:47 +0400 |
| commit | d56dc61265d2527a63ab5b0f03199a43cd89ca36 (patch) | |
| tree | bea2a5b12fc120ca6e8797b2f16ad9696e0f25dd /drivers/media/video/cx23885/cx23885-video.c | |
| parent | 95f73c5b57990c97047c200b8746ab62a360c5bc (diff) | |
| download | linux-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/cx23885/cx23885-video.c')
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-video.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c index 6047c78d84bf..d9bef1a54d1f 100644 --- a/drivers/media/video/cx23885/cx23885-video.c +++ b/drivers/media/video/cx23885/cx23885-video.c @@ -731,6 +731,7 @@ static int video_open(struct inode *inode, struct file *file) enum v4l2_buf_type type = 0; int radio = 0; + lock_kernel(); list_for_each(list, &cx23885_devlist) { h = list_entry(list, struct cx23885_dev, devlist); if (h->video_dev->minor == minor) { @@ -748,16 +749,20 @@ static int video_open(struct inode *inode, struct file *file) dev = h; } } - if (NULL == dev) + if (NULL == dev) { + unlock_kernel(); return -ENODEV; + } dprintk(1, "open minor=%d radio=%d type=%s\n", minor, radio, v4l2_type_names[type]); /* allocate + initialize per filehandle data */ fh = kzalloc(sizeof(*fh), GFP_KERNEL); - if (NULL == fh) + if (NULL == fh) { + unlock_kernel(); return -ENOMEM; + } file->private_data = fh; fh->dev = dev; fh->radio = radio; @@ -775,6 +780,7 @@ static int video_open(struct inode *inode, struct file *file) dprintk(1, "post videobuf_queue_init()\n"); + unlock_kernel(); return 0; } |