Hi "Krzysztof, I love your patch! Yet something to improve: [auto build test ERROR on media-tree/master] [also build test ERROR on linus/master v5.16-rc7 next-20211224] [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/Krzysztof-Ha-asa/On-Semi-AR0521-sensor-driver/20211223-150758 base: git://linuxtv.org/media_tree.git master config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220101/202201010737.V5A5o9x5-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/664482ab74a2331a7a7ead9256b0455cfc3334c7 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Krzysztof-Ha-asa/On-Semi-AR0521-sensor-driver/20211223-150758 git checkout 664482ab74a2331a7a7ead9256b0455cfc3334c7 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from include/linux/device.h:25, from include/linux/pm_runtime.h:11, from drivers/media/i2c/ar0521.c:10: >> drivers/media/i2c/ar0521.c:1029:21: error: initialization of 'int (*)(struct device *)' from incompatible pointer type 'void (*)(struct device *)' [-Werror=incompatible-pointer-types] 1029 | SET_RUNTIME_PM_OPS(ar0521_power_off, ar0521_power_on, NULL) | ^~~~~~~~~~~~~~~~ include/linux/pm.h:341:21: note: in definition of macro 'SET_RUNTIME_PM_OPS' 341 | .runtime_suspend = suspend_fn, \ | ^~~~~~~~~~ drivers/media/i2c/ar0521.c:1029:21: note: (near initialization for 'ar0521_pm_ops.runtime_suspend') 1029 | SET_RUNTIME_PM_OPS(ar0521_power_off, ar0521_power_on, NULL) | ^~~~~~~~~~~~~~~~ include/linux/pm.h:341:21: note: in definition of macro 'SET_RUNTIME_PM_OPS' 341 | .runtime_suspend = suspend_fn, \ | ^~~~~~~~~~ cc1: some warnings being treated as errors vim +1029 drivers/media/i2c/ar0521.c 1026 1027 static const struct dev_pm_ops ar0521_pm_ops = { 1028 SET_SYSTEM_SLEEP_PM_OPS(ar0521_suspend, ar0521_resume) > 1029 SET_RUNTIME_PM_OPS(ar0521_power_off, ar0521_power_on, NULL) 1030 }; 1031 static const struct of_device_id ar0521_dt_ids[] = { 1032 {.compatible = "onnn,ar0521"}, 1033 {} 1034 }; 1035 MODULE_DEVICE_TABLE(of, ar0521_dt_ids); 1036 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx