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[media] vb2: Return 0 when streamon and streamoff are already on/off 

According to the doc:
If VIDIOC_STREAMON is called when streaming is already in progress,
or if VIDIOC_STREAMOFF is called when streaming is already stopped,
then the ioctl does nothing and 0 is returned.
The current implementation was returning -EINVAL instead.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
hifive-unleashed-5.1
Ricardo Ribalda 2013-11-08 07:08:45 -03:00 committed by Mauro Carvalho Chehab
parent 202dfbdc2b
commit f956035ce7
1 changed files with 4 additions and 4 deletions
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8
drivers/media/v4l2-core/videobuf2-core.c
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@ -1697,8 +1697,8 @@ int vb2_streamon(struct vb2_queue *q, enum v4l2_buf_type type)
}
if (q->streaming) {
dprintk(1, "streamon: already streaming\n");
return -EBUSY;
dprintk(3, "streamon successful: already streaming\n");
return 0;
}
/*
@ -1754,8 +1754,8 @@ int vb2_streamoff(struct vb2_queue *q, enum v4l2_buf_type type)
}
if (!q->streaming) {
dprintk(1, "streamoff: not streaming\n");
return -EINVAL;
dprintk(3, "streamoff successful: not streaming\n");
return 0;
}
/*