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authorMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-09-19 16:02:12 (GMT)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-09-22 00:07:29 (GMT)
commitc7854c2c5d692a329b4d9a9a73bcf36ae137ee7c (patch)
treea10da2a77603967361a7f12773a218be4fb13d03
parent91235537bc4b53f0b6f953acf963bcbb6215c49c (diff)
[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>
-rw-r--r--drivers/media/usb/em28xx/em28xx-video.c2
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 90dec29..4133925 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);

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