Hi Oleksandr, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on net/master] [also build test WARNING on net-next/master ipvs/master linus/master v5.12-rc6 next-20210409] [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/Oleksandr-Mazur/net-core-devlink... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 864db232dc7036aa2de19749c3d5be0143b24f8f config: i386-randconfig-s031-20210409 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-279-g6d5d9b42-dirty # https://github.com/0day-ci/linux/commit/7e224a25c3c6be88530f86f7f5dd9e668... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Oleksandr-Mazur/net-core-devlink-add-port_params_ops-for-devlink-port-parameters-altering/20210410-002443 git checkout 7e224a25c3c6be88530f86f7f5dd9e668d3b5620 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 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/netdevsim/dev.c:923:28: sparse: expected struct devlink_port_param_ops *port_param_ops drivers/net/netdevsim/dev.c:923:28: sparse: got struct devlink_port_param_ops const * vim +923 drivers/net/netdevsim/dev.c 909 910 static const struct devlink_ops nsim_dev_devlink_ops = { 911 .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT | 912 DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK, 913 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), 914 .reload_down = nsim_dev_reload_down, 915 .reload_up = nsim_dev_reload_up, 916 .info_get = nsim_dev_info_get, 917 .flash_update = nsim_dev_flash_update, 918 .trap_init = nsim_dev_devlink_trap_init, 919 .trap_action_set = nsim_dev_devlink_trap_action_set, 920 .trap_group_set = nsim_dev_devlink_trap_group_set, 921 .trap_policer_set = nsim_dev_devlink_trap_policer_set, 922 .trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get, 924 }; 925 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org