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[media] au0828: enable VBI timeout when calling read() without streamon()

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Because some clients (e.g. tvtime) will just open the filehandle and call
read() instead of explicitly calling streamon first, we need to make sure the
VBI timeout routine gets enabled in this case.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Devin Heitmueller 2010-10-09 15:09:17 -03:00 committed by Mauro Carvalho Chehab
parent 78ca500559
commit bf797165f0
1 changed files with 7 additions and 0 deletions
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7
drivers/media/video/au0828/au0828-video.c
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@ -1116,6 +1116,13 @@ static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf,
if (!res_get(fh, AU0828_RESOURCE_VBI))
return -EBUSY;
if (dev->vbi_timeout_running == 0) {
/* Handle case where caller tries to read without
calling streamon first */
dev->vbi_timeout_running = 1;
mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
}
return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
filp->f_flags & O_NONBLOCK);
}