E1000_MDIC_INT_EN 1596 drivers/net/ethernet/intel/e1000/e1000_hw.h #define E1000_MDIC_INT_EN    0x20000000
E1000_MDIC_INT_EN  992 drivers/net/ethernet/intel/igb/e1000_defines.h #define E1000_MDIC_INT_EN    0x20000000