Hi Chun-Yi", I love your patch! Perhaps something to improve: [auto build test WARNING on cryptodev/master] [also build test WARNING on linus/master v5.13-rc2 next-20210521] [cannot apply to crypto/master] [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] url: https://github.com/0day-ci/linux/commits/Lee-Chun-Yi/Check-codeSigning-ex... base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master config: openrisc-randconfig-r015-20210522 (attached as .config) compiler: or1k-linux-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/928555596c9cd62caabf8777ed8152dda... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lee-Chun-Yi/Check-codeSigning-extended-key-usage-extension/20210522-220349 git checkout 928555596c9cd62caabf8777ed8152ddac2609ef # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 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 >>): In file included from certs/system_keyring.c:17: include/keys/system_keyring.h:72:1: error: expected identifier or '(' before '{' token 72 | { | ^ 70 | static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7, | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/is_key_on_revocation_list +70 include/keys/system_keyring.h 60 61 #ifdef CONFIG_SYSTEM_REVOCATION_LIST 62 extern int add_key_to_revocation_list(const char *data, size_t size); 63 extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7, 64 enum key_being_used_for usage); 65 #else 66 static inline int add_key_to_revocation_list(const char *data, size_t size) 67 { 68 return 0; 69 } 71 enum key_being_used_for usage); 72 { 73 return -ENOKEY; 74 } 75 #endif 76 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org