V4L2_BUF_FLAG_QUEUED
if (driverbuf->flags & V4L2_BUF_FLAG_QUEUED) {
if (!(vs->vs_buf[i]->vb_buf->flags & V4L2_BUF_FLAG_QUEUED)) {
if (!(vs->vs_buf[i]->vb_buf->flags & V4L2_BUF_FLAG_QUEUED))
if (vb->vb_buf->flags & V4L2_BUF_FLAG_QUEUED) {
vb->vb_buf->flags |= V4L2_BUF_FLAG_QUEUED;
vb->vb_buf->flags &= ~V4L2_BUF_FLAG_QUEUED;