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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/cx23885/cx23885-417.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/cx23885/cx23885-417.c')
-rw-r--r--drivers/media/video/cx23885/cx23885-417.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/media/video/cx23885/cx23885-417.c b/drivers/media/video/cx23885/cx23885-417.c
index 7b0e8c01692e..93777d06d0ac 100644
--- a/drivers/media/video/cx23885/cx23885-417.c
+++ b/drivers/media/video/cx23885/cx23885-417.c
@@ -1583,6 +1583,7 @@ static int mpeg_open(struct inode *inode, struct file *file)
dprintk(2, "%s()\n", __func__);
+ lock_kernel();
list_for_each(list, &cx23885_devlist) {
h = list_entry(list, struct cx23885_dev, devlist);
if (h->v4l_device->minor == minor) {
@@ -1591,13 +1592,17 @@ static int mpeg_open(struct inode *inode, struct file *file)
}
}
- if (dev == NULL)
+ if (dev == NULL) {
+ unlock_kernel();
return -ENODEV;
+ }
/* 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;
@@ -1608,6 +1613,7 @@ static int mpeg_open(struct inode *inode, struct file *file)
V4L2_FIELD_INTERLACED,
sizeof(struct cx23885_buffer),
fh);
+ unlock_kernel();
return 0;
}

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