MVPP2_TXQ_PENDING_REG
reg = mvpp2_read(sc->sc, MVPP2_TXQ_PENDING_REG);
mvpp2_write(sc->sc, MVPP2_TXQ_PENDING_REG, reg);
pending = mvpp2_read(sc->sc, MVPP2_TXQ_PENDING_REG) &