diff options
| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-09-19 20:02:12 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-09-22 04:07:29 +0400 |
| commit | c7854c2c5d692a329b4d9a9a73bcf36ae137ee7c (patch) | |
| tree | a10da2a77603967361a7f12773a218be4fb13d03 /drivers/media/usb/em28xx | |
| parent | 91235537bc4b53f0b6f953acf963bcbb6215c49c (diff) | |
| download | linux-c7854c2c5d692a329b4d9a9a73bcf36ae137ee7c.tar.xz | |
[media] em28xx: fix VBI handling logic
When both VBI and video are streaming, and video stream is stopped,
a subsequent trial to restart it will fail, because S_FMT will
return -EBUSY.
That prevents applications like zvbi to work properly.
Please notice that, while this fix it fully for zvbi, the
best is to get rid of streaming_users and res_get logic as a hole.
However, this single-line patch is better to be merged at -stable.
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/usb/em28xx')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 90dec2955f1c..41339259f30c 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -1342,7 +1342,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; - if (v4l2->streaming_users > 0) + if (vb2_is_busy(&v4l2->vb_vidq)) return -EBUSY; vidioc_try_fmt_vid_cap(file, priv, f); |