IGC_CTRL_EXT
ctrl_ext = IGC_READ_REG(&sc->hw, IGC_CTRL_EXT);
IGC_WRITE_REG(&sc->hw, IGC_CTRL_EXT,
ctrl_ext = IGC_READ_REG(&sc->hw, IGC_CTRL_EXT);
IGC_WRITE_REG(&sc->hw, IGC_CTRL_EXT,
regs_buff[2] = IGC_READ_REG(hw, IGC_CTRL_EXT);
ctrl_ext = IGC_READ_REG(hw, IGC_CTRL_EXT);
IGC_WRITE_REG(hw, IGC_CTRL_EXT, ctrl_ext);