Hi Jia, kernel test robot noticed the following build warnings: [auto build test WARNING on herbert-cryptodev-2.6/master] [also build test WARNING on next-20231215] [cannot apply to robh/for-next linus/master v6.7-rc5] [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/Jia-Jie-Ho/dt-bindings-crypto-starfive-Add-jh8100-compatible-string/20231216-221614 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master patch link: https://lore.kernel.org/r/20231216141234.417498-6-jiajie.ho%40starfivetech.com patch subject: [PATCH 5/5] crypto: starfive: Add sm4 support for JH8100 config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20231217/202312170811.OzUPuAUd-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231217/202312170811.OzUPuAUd-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/202312170811.OzUPuAUd-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/crypto/starfive/jh8100-sm4.c:1088:5: warning: no previous prototype for function 'starfive_sm4_register_algs' [-Wmissing-prototypes] 1088 | int starfive_sm4_register_algs(void) | ^ drivers/crypto/starfive/jh8100-sm4.c:1088:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1088 | int starfive_sm4_register_algs(void) | ^ | static >> drivers/crypto/starfive/jh8100-sm4.c:1103:6: warning: no previous prototype for function 'starfive_sm4_unregister_algs' [-Wmissing-prototypes] 1103 | void starfive_sm4_unregister_algs(void) | ^ drivers/crypto/starfive/jh8100-sm4.c:1103:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1103 | void starfive_sm4_unregister_algs(void) | ^ | static 2 warnings generated. vim +/starfive_sm4_register_algs +1088 drivers/crypto/starfive/jh8100-sm4.c 1087 > 1088 int starfive_sm4_register_algs(void) 1089 { 1090 int ret; 1091 1092 ret = crypto_engine_register_skciphers(skcipher_sm4, ARRAY_SIZE(skcipher_sm4)); 1093 if (ret) 1094 return ret; 1095 1096 ret = crypto_engine_register_aeads(aead_sm4, ARRAY_SIZE(aead_sm4)); 1097 if (ret) 1098 crypto_engine_unregister_skciphers(skcipher_sm4, ARRAY_SIZE(skcipher_sm4)); 1099 1100 return ret; 1101 } 1102 > 1103 void starfive_sm4_unregister_algs(void) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki