EMAC_RX_CTL
rcr = EMAC_READ_REG(sc, EMAC_RX_CTL);
EMAC_WRITE_REG(sc, EMAC_RX_CTL, rcr);
reg_val = EMAC_READ_REG(sc, EMAC_RX_CTL);
EMAC_WRITE_REG(sc, EMAC_RX_CTL, reg_val);
if ((EMAC_READ_REG(sc, EMAC_RX_CTL) &
reg_val = EMAC_READ_REG(sc, EMAC_RX_CTL);
EMAC_WRITE_REG(sc, EMAC_RX_CTL, reg_val);
reg_val = EMAC_READ_REG(sc, EMAC_RX_CTL);
EMAC_WRITE_REG(sc, EMAC_RX_CTL, reg_val);