Hi Gene, Thank you for the patch! Yet something to improve: [auto build test ERROR on ljones-mfd/for-mfd-next] [cannot apply to v5.4-rc4 next-20191024] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Gene-Chen/mfd-mt6360-add-pmic-mt6360-driver/20191024-182129 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next config: x86_64-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.4.0-14) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All error/warnings (new ones prefixed by >>): In file included from :0:0: >> include/linux/mfd/mt6360-private.h:234:51: warning: 'struct device_node' declared inside parameter list will not be visible outside of this definition or declaration static inline void mt6360_dt_parser_helper(struct device_node *np, void *data, ^~~~~~~~~~~ include/linux/mfd/mt6360-private.h: In function 'mt6360_dt_parser_helper': >> include/linux/mfd/mt6360-private.h:243:3: error: implicit declaration of function 'of_property_read_u32' [-Werror=implicit-function-declaration] of_property_read_u32(np, props[i].name, data + props[i].offset); ^~~~~~~~~~~~~~~~~~~~ include/linux/mfd/mt6360-private.h: In function 'mt6360_pdata_apply_helper': include/linux/mfd/mt6360-private.h:271:9: error: implicit declaration of function 'regmap_update_bits'; did you mean 'work_data_bits'? [-Werror=implicit-function-declaration] ret = regmap_update_bits(context, ^~~~~~~~~~~~~~~~~~ work_data_bits cc1: some warnings being treated as errors vim +/of_property_read_u32 +243 include/linux/mfd/mt6360-private.h 233 > 234 static inline void mt6360_dt_parser_helper(struct device_node *np, void *data, 235 const struct mt6360_val_prop *props, 236 int prop_cnt) 237 { 238 int i; 239 240 for (i = 0; i < prop_cnt; i++) { 241 if (unlikely(!props[i].name)) 242 continue; > 243 of_property_read_u32(np, props[i].name, data + props[i].offset); 244 } 245 } 246 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation