ADDRL
smsc911x_mac_write(pdata, ADDRL, mac_low32);
mac_low32 = smsc911x_mac_read(pdata, ADDRL);
smsc9420_reg_write(pd, ADDRL, mac_low32);
u32 mac_low32 = smsc9420_reg_read(pd, ADDRL);
ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);