MII_DATA
reg = smsc911x_mac_read(pdata, MII_DATA);
smsc911x_mac_write(pdata, MII_DATA, val);
reg = (u16)smsc9420_reg_read(pd, MII_DATA);
smsc9420_reg_write(pd, MII_DATA, (u32)val);
ret = lan78xx_read_reg(dev, MII_DATA, &val);
ret = lan78xx_write_reg(dev, MII_DATA, val);
MII_DATA,
ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
ret = smsc95xx_read_reg(dev, MII_DATA, &val);
ret = smsc95xx_write_reg(dev, MII_DATA, val);