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[media] Fix vivi regression 

This patch fixes a regression introduced by commit
5126f2590bee412e3053de851cb07f531e4be36a:

[media] v4l2-dev: add flag to have the core lock all file operations

I forgot to add the locks to the vivi read operation.

Regards,

	Hans

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-06-06 02:17:16 -03:00 committed by Mauro Carvalho Chehab
parent af03891f61
commit d9762df4a9
1 changed files with 5 additions and 1 deletions
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6
drivers/media/video/vivi.c
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@ -1149,10 +1149,14 @@ static ssize_t
vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
{
struct vivi_dev *dev = video_drvdata(file);
int err;
dprintk(dev, 1, "read called\n");
return vb2_read(&dev->vb_vidq, data, count, ppos,
mutex_lock(&dev->mutex);
err = vb2_read(&dev->vb_vidq, data, count, ppos,
file->f_flags & O_NONBLOCK);
mutex_unlock(&dev->mutex);
return err;
}
static unsigned int