DUMMY_BD_BUFFER
else if ((buf == DUMMY_BD_BUFFER) && !(td_status & ~TD_W))
else if (in_be32(&td->buf_ptr) == DUMMY_BD_BUFFER)
if (in_be32(&td->buf_ptr) == DUMMY_BD_BUFFER) {
if (in_be32(&ep->conf_td->buf_ptr) == DUMMY_BD_BUFFER) {
out_be32(&ep->empty_td->buf_ptr, DUMMY_BD_BUFFER);