Hi 'Guanjun', Thank you for the patch! Yet something to improve: [auto build test ERROR on herbert-cryptodev-2.6/master] [also build test ERROR on herbert-crypto-2.6/master linus/master v6.1-rc2 next-20221026] [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/Guanjun/Drivers-for-Alibaba-YCC-Yitian-Cryptography-Complex-cryptographic-accelerator/20221025-180005 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master patch link: https://lore.kernel.org/r/1666691616-69983-9-git-send-email-guanjun%40linux.alibaba.com patch subject: [PATCH v3 8/9] crypto/ycc: Add sm2 algorithm support config: csky-randconfig-s033-20221026 compiler: csky-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/ee2cc8ab8fc1a832e55588b81520beeee39647a3 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Guanjun/Drivers-for-Alibaba-YCC-Yitian-Cryptography-Complex-cryptographic-accelerator/20221025-180005 git checkout ee2cc8ab8fc1a832e55588b81520beeee39647a3 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=csky SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "sm2signature_decoder" [drivers/crypto/ycc/ycc.ko] undefined! -- 0-DAY CI Kernel Test Service https://01.org/lkp