R88F_RX_DFIR
rtwn_bb_write(sc, R88F_RX_DFIR,
rtwn_bb_read(sc, R88F_RX_DFIR) &
reg = rtwn_bb_read(sc, R88F_RX_DFIR);
rtwn_bb_write(sc, R88F_RX_DFIR, reg);