BM_WUC_ENABLE_REG
rv = wm_gmii_mdic_readreg(dev, 1, BM_WUC_ENABLE_REG, phy_regp);
if ((rv = wm_gmii_mdic_writereg(dev, 1, BM_WUC_ENABLE_REG, temp)) != 0)
wm_gmii_mdic_writereg(dev, 1, BM_WUC_ENABLE_REG, *phy_regp);