INTERFACE_CONTROL_ADDR
intf_ctl = xgene_enet_rd_mac(pdata, INTERFACE_CONTROL_ADDR);
xgene_enet_wr_mac(pdata, INTERFACE_CONTROL_ADDR, intf_ctl);
intf_ctl = xgene_enet_rd_mac(p, INTERFACE_CONTROL_ADDR);
xgene_enet_wr_mac(p, INTERFACE_CONTROL_ADDR, intf_ctl);