URQ_DEV_DMABUF
if ((xfer->rqflags & URQ_DEV_DMABUF) == 0) {
if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))
xfer->rqflags |= URQ_DEV_DMABUF;
if (!(xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))) {
xfer->rqflags &= ~(URQ_DEV_DMABUF | URQ_AUTO_DMABUF);
if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))