diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2008-07-30 08:43:36 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 09:36:47 -0200 |
| commit | d56dc61265d2527a63ab5b0f03199a43cd89ca36 (patch) | |
| tree | bea2a5b12fc120ca6e8797b2f16ad9696e0f25dd /drivers/media/video/saa7134 | |
| parent | 95f73c5b57990c97047c200b8746ab62a360c5bc (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/saa7134')
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-empress.c | 3 | ||||
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-video.c | 8 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c index c0c5d7509c2..6f423d116fb 100644 --- a/drivers/media/video/saa7134/saa7134-empress.c +++ b/drivers/media/video/saa7134/saa7134-empress.c @@ -79,9 +79,11 @@ static int ts_open(struct inode *inode, struct file *file) struct saa7134_dev *dev; int err; + lock_kernel(); list_for_each_entry(dev, &saa7134_devlist, devlist) if (dev->empress_dev && dev->empress_dev->minor == minor) goto found; + unlock_kernel(); return -ENODEV; found: @@ -103,6 +105,7 @@ static int ts_open(struct inode *inode, struct file *file) done_up: mutex_unlock(&dev->empress_tsq.vb_lock); done: + unlock_kernel(); return err; } diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c index 68c26898186..8fd31138f9a 100644 --- a/drivers/media/video/saa7134/saa7134-video.c +++ b/drivers/media/video/saa7134/saa7134-video.c @@ -1330,6 +1330,8 @@ static int video_open(struct inode *inode, struct file *file) struct saa7134_fh *fh; enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE; int radio = 0; + + lock_kernel(); list_for_each_entry(dev, &saa7134_devlist, devlist) { if (dev->video_dev && (dev->video_dev->minor == minor)) goto found; @@ -1342,6 +1344,7 @@ static int video_open(struct inode *inode, struct file *file) goto found; } } + unlock_kernel(); return -ENODEV; found: @@ -1350,8 +1353,10 @@ static int video_open(struct inode *inode, struct file *file) /* 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; @@ -1384,6 +1389,7 @@ static int video_open(struct inode *inode, struct file *file) /* switch to video/vbi mode */ video_mux(dev,dev->ctl_input); } + unlock_kernel(); return 0; } |