Hi Tony, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on v5.9-rc4] [also build test WARNING on next-20200911] [cannot apply to jkirsher-next-queue/dev-queue] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Tony-Nguyen/i40e-add-support-for... base: f4d51dffc6c01a9e94650d95ce0104964f8ae822 config: x86_64-randconfig-s022-20200911 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/net/ethernet/intel/i40e/i40e_ptp.c:1022:50: sparse: sparse: mixing different enum types: drivers/net/ethernet/intel/i40e/i40e_ptp.c:1022:50: sparse: int enum i40e_ptp_led_pin_state drivers/net/ethernet/intel/i40e/i40e_ptp.c:1022:50: sparse: int enum i40e_ptp_gpio_pin_state drivers/net/ethernet/intel/i40e/i40e_ptp.c:1023:50: sparse: sparse: mixing different enum types: drivers/net/ethernet/intel/i40e/i40e_ptp.c:1023:50: sparse: int enum i40e_ptp_led_pin_state drivers/net/ethernet/intel/i40e/i40e_ptp.c:1023:50: sparse: int enum i40e_ptp_gpio_pin_state drivers/net/ethernet/intel/i40e/i40e_ptp.c:1024:50: sparse: sparse: mixing different enum types: drivers/net/ethernet/intel/i40e/i40e_ptp.c:1024:50: sparse: int enum i40e_ptp_led_pin_state drivers/net/ethernet/intel/i40e/i40e_ptp.c:1024:50: sparse: int enum i40e_ptp_gpio_pin_state # https://github.com/0day-ci/linux/commit/4e1948e563d6b25eca54bd9d4d23c4693... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tony-Nguyen/i40e-add-support-for-PTP-external-synchronization-clock/20200912-081754 git checkout 4e1948e563d6b25eca54bd9d4d23c46936515ba4 vim +1021 drivers/net/ethernet/intel/i40e/i40e_ptp.c 1000 1001 /** 1002 * i40e_ptp_set_pins_hw - Set HW GPIO pins 1003 * @pf: Board private structure 1004 * 1005 * This function sets GPIO pins for PTP 1006 **/ 1007 static void i40e_ptp_set_pins_hw(struct i40e_pf *pf) 1008 { 1009 const struct i40e_ptp_pins_settings *pins = pf->ptp_pins; 1010 struct i40e_hw *hw = &pf->hw; 1011 1012 /* pin must be disabled before it may be used */ 1013 i40e_ptp_set_pin_hw(hw, I40E_SDP3_2, off); 1014 i40e_ptp_set_pin_hw(hw, I40E_SDP3_3, off); 1015 i40e_ptp_set_pin_hw(hw, I40E_GPIO_4, off); 1016 1017 i40e_ptp_set_pin_hw(hw, I40E_SDP3_2, pins->sdp3_2); 1018 i40e_ptp_set_pin_hw(hw, I40E_SDP3_3, pins->sdp3_3); 1019 i40e_ptp_set_pin_hw(hw, I40E_GPIO_4, pins->gpio_4); 1020 1022 i40e_ptp_set_led_hw(hw, I40E_LED2_1, pins->led2_1); 1023 i40e_ptp_set_led_hw(hw, I40E_LED3_0, pins->led3_0); 1024 i40e_ptp_set_led_hw(hw, I40E_LED3_1, pins->led3_1); 1025 1026 dev_info(&pf->pdev->dev, 1027 "PTP configuration set to: SDP3_2: %s, SDP3_3: %s, GPIO_4: %s.\n", 1028 i40e_ptp_gpio_pin_state2str[pins->sdp3_2], 1029 i40e_ptp_gpio_pin_state2str[pins->sdp3_3], 1030 i40e_ptp_gpio_pin_state2str[pins->gpio_4]); 1031 } 1032 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org