Hi guanjing, kernel test robot noticed the following build warnings: [auto build test WARNING on brauner-vfs/vfs.all] [also build test WARNING on linus/master next-20241121] [cannot apply to v6.12] [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/guanjing/tmpfs-Unsigned-expression-compared-with-zero/20241121-152806 base: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all patch link: https://lore.kernel.org/r/20241120105150.24008-1-guanjing%40cmss.chinamobile.com patch subject: [PATCH v1] tmpfs: Unsigned expression compared with zero config: arc-randconfig-001-20241122 (https://download.01.org/0day-ci/archive/20241122/202411221128.qSNFAkty-lkp@xxxxxxxxx/config) compiler: arc-elf-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241122/202411221128.qSNFAkty-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/202411221128.qSNFAkty-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> fs/unicode/utf8-core.c:225: warning: Function parameter or struct member 'version_str' not described in 'utf8_parse_version' vim +225 fs/unicode/utf8-core.c 9d53690f0d4e56 Gabriel Krisman Bertazi 2019-04-25 216 142fa60f61f938 André Almeida 2024-10-21 217 /** 142fa60f61f938 André Almeida 2024-10-21 218 * utf8_parse_version - Parse a UTF-8 version number from a string 142fa60f61f938 André Almeida 2024-10-21 219 * 142fa60f61f938 André Almeida 2024-10-21 220 * @version: input string 142fa60f61f938 André Almeida 2024-10-21 221 * fd9b2236cc1a2d guanjing 2024-11-20 222 * Returns 0 on success, negative code on error 142fa60f61f938 André Almeida 2024-10-21 223 */ fd9b2236cc1a2d guanjing 2024-11-20 224 int utf8_parse_version(char *version_str, unsigned int *version) 142fa60f61f938 André Almeida 2024-10-21 @225 { -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki