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/s2255drv.c | |
| parent | 95f73c5b57990c97047c200b8746ab62a360c5bc (diff) | |
| download | blackbird-op-linux-d56dc61265d2527a63ab5b0f03199a43cd89ca36.tar.gz blackbird-op-linux-d56dc61265d2527a63ab5b0f03199a43cd89ca36.zip | |
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/s2255drv.c')
| -rw-r--r-- | drivers/media/video/s2255drv.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c index 92b83feae366..de39cf0890fc 100644 --- a/drivers/media/video/s2255drv.c +++ b/drivers/media/video/s2255drv.c @@ -1457,6 +1457,7 @@ static int s2255_open(struct inode *inode, struct file *file) int cur_channel = -1; dprintk(1, "s2255: open called (minor=%d)\n", minor); + lock_kernel(); list_for_each(list, &s2255_devlist) { h = list_entry(list, struct s2255_dev, s2255_devlist); for (i = 0; i < MAX_CHANNELS; i++) { @@ -1469,6 +1470,7 @@ static int s2255_open(struct inode *inode, struct file *file) } if ((NULL == dev) || (cur_channel == -1)) { + unlock_kernel(); dprintk(1, "s2255: openv4l no dev\n"); return -ENODEV; } @@ -1490,6 +1492,7 @@ static int s2255_open(struct inode *inode, struct file *file) printk(KERN_INFO "2255 FW load failed.\n"); dev->users[cur_channel]--; mutex_unlock(&dev->open_lock); + unlock_kernel(); return -EFAULT; } } else if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_NOTLOADED) { @@ -1506,6 +1509,7 @@ static int s2255_open(struct inode *inode, struct file *file) "try again\n"); dev->users[cur_channel]--; mutex_unlock(&dev->open_lock); + unlock_kernel(); return -EBUSY; } } @@ -1515,6 +1519,7 @@ static int s2255_open(struct inode *inode, struct file *file) if (NULL == fh) { dev->users[cur_channel]--; mutex_unlock(&dev->open_lock); + unlock_kernel(); return -ENOMEM; } @@ -1548,6 +1553,7 @@ static int s2255_open(struct inode *inode, struct file *file) kref_get(&dev->kref); mutex_unlock(&dev->open_lock); + unlock_kernel(); return 0; } |
