[kbuild-all] kernel/module.c:4213:6: warning: no previous prototype for function 'match_address_layout'

tree: https://github.com/0day-ci/linux/commits/UPDATE-20220208-194118/Vimal-Agr... head: 8e6e1487d86e7fe625a0c64a5c3f4c6fc6a58a48 commit: 8e6e1487d86e7fe625a0c64a5c3f4c6fc6a58a48 modules: add heuristic when stripping unneeded symbols date: 6 hours ago config: s390-randconfig-r044-20220208 (https://download.01.org/0day-ci/archive/20220209/202202090113.JTGTQqUD-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e8bff9ae54a55b4dbfeb6ba55f723abbd81bf494) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/0day-ci/linux/commit/8e6e1487d86e7fe625a0c64a5c3f4c6fc... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20220208-194118/Vimal-Agrawal/kernel-module-c-heuristic-enhancement-when-INSTALL_MOD_STRIP-strip-unneeded-is-used/20211222-212507 git checkout 8e6e1487d86e7fe625a0c64a5c3f4c6fc6a58a48 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): bool match_address_layout(struct module *mod, unsigned long addr, bool init) ^ kernel/module.c:4213:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool match_address_layout(struct module *mod, unsigned long addr, bool init) ^ static 1 warning generated. vim +/match_address_layout +4213 kernel/module.c 4207 4208 /* 4209 * Check if module address (addr) passed is as per init passed 4210 * if init is true then check in init layout 4211 * else check in core layout 4212 */ 4214 { 4215 if (init) 4216 return within_module_init(addr, mod); 4217 else 4218 return within_module_core(addr, mod); 4219 } 4220 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org