Hi Chen-Yu, kernel test robot noticed the following build warnings: [auto build test WARNING on broonie-regulator/for-next] [also build test WARNING on robh/for-next wsa/i2c/for-next linus/master v6.11-rc5 next-20240823] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Chen-Yu-Tsai/of-dynamic-Add-of_changeset_update_prop_string/20240826-105737 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next patch link: https://lore.kernel.org/r/20240822092006.3134096-3-wenst%40chromium.org patch subject: [PATCH v5 02/10] regulator: Move OF-specific regulator lookup code to of_regulator.c config: i386-randconfig-005-20240826 (https://download.01.org/0day-ci/archive/20240826/202408261940.R6VmGtGO-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240826/202408261940.R6VmGtGO-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408261940.R6VmGtGO-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/regulator/helpers.c:17: drivers/regulator/internal.h: In function 'of_regulator_dev_lookup': >> drivers/regulator/internal.h:87:16: warning: returning 'int' from a function with return type 'struct regulator_dev *' makes pointer from integer without a cast [-Wint-conversion] 87 | return -ENODEV; | ^ vim +87 drivers/regulator/internal.h 82 83 #else 84 static inline struct regulator_dev *of_regulator_dev_lookup(struct device *dev, 85 const char *supply) 86 { > 87 return -ENODEV; 88 } 89 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki