DMIO_STATE_SEL
if (ds->ds_flags & DMIO_STATE_SEL) {
ds->ds_flags &= ~DMIO_STATE_SEL;
if (ds->ds_flags & DMIO_STATE_SEL) {
ds->ds_flags &= ~DMIO_STATE_SEL;
ds->ds_flags |= DMIO_STATE_SEL;