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V4L/DVB: videobuf: Add support for V4L2_BUF_FLAG_ERROR

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For recoverable stream errors dqbuf() now returns 0 and the error flag
is set instead of returning EIO.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-04-28 04:05:22 -03:00 committed by Mauro Carvalho Chehab
parent bc0f7f19ab
commit b2dfd1a45f
1 changed files with 8 additions and 8 deletions
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16
drivers/media/video/videobuf-core.c
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@ -285,8 +285,10 @@ static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
case VIDEOBUF_ACTIVE:
b->flags |= V4L2_BUF_FLAG_QUEUED;
break;
case VIDEOBUF_DONE:
case VIDEOBUF_ERROR:
b->flags |= V4L2_BUF_FLAG_ERROR;
/* fall through */
case VIDEOBUF_DONE:
b->flags |= V4L2_BUF_FLAG_DONE;
break;
case VIDEOBUF_NEEDS_INIT:
@ -670,6 +672,7 @@ int videobuf_dqbuf(struct videobuf_queue *q,
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
memset(b, 0, sizeof(*b));
mutex_lock(&q->vb_lock);
retval = stream_next_buffer(q, &buf, nonblocking);
@ -681,23 +684,20 @@ int videobuf_dqbuf(struct videobuf_queue *q,
switch (buf->state) {
case VIDEOBUF_ERROR:
dprintk(1, "dqbuf: state is error\n");
retval = -EIO;
CALL(q, sync, q, buf);
buf->state = VIDEOBUF_IDLE;
break;
case VIDEOBUF_DONE:
dprintk(1, "dqbuf: state is done\n");
CALL(q, sync, q, buf);
buf->state = VIDEOBUF_IDLE;
break;
default:
dprintk(1, "dqbuf: state invalid\n");
retval = -EINVAL;
goto done;
}
list_del(&buf->stream);
memset(b, 0, sizeof(*b));
CALL(q, sync, q, buf);
videobuf_status(q, b, buf, q->type);
list_del(&buf->stream);
buf->state = VIDEOBUF_IDLE;
b->flags &= ~V4L2_BUF_FLAG_DONE;
done:
mutex_unlock(&q->vb_lock);
return retval;