static s32 ixgbe_write_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
				     u32 device_type, u16 phy_data)
static int ixgbe_write_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
				     u32 device_type, u16 phy_data)