MPS_FLAGS_BUSY
if (sc->mps_flags & MPS_FLAGS_BUSY) {
sc->mps_flags &= ~MPS_FLAGS_BUSY;
if (sc->mps_flags & MPS_FLAGS_BUSY) {
sc->mps_flags |= MPS_FLAGS_BUSY;
sc->mps_flags &= ~MPS_FLAGS_BUSY;
if (sc->mps_flags & MPS_FLAGS_BUSY) {
sc->mps_flags |= MPS_FLAGS_BUSY;