Hi Sumit, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.10-rc2 next-20201103] [cannot apply to security/next-testing dhowells-fs/fscache-next] [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/Sumit-Garg/Introduce-TEE-based-Trusted-Keys-support/20201104-000811 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b7cbaf59f62f8ab8f157698f9e31642bff525bd0 config: parisc-randconfig-r003-20201103 (attached as .config) compiler: hppa-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/40af1192c0a0b1a63d672aa612541d57ec2c684a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sumit-Garg/Introduce-TEE-based-Trusted-Keys-support/20201104-000811 git checkout 40af1192c0a0b1a63d672aa612541d57ec2c684a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> security/keys/trusted-keys/trusted_tee.c:249:1: warning: data definition has no type or storage class 249 | MODULE_DEVICE_TABLE(tee, trusted_key_id_table); | ^~~~~~~~~~~~~~~~~~~ security/keys/trusted-keys/trusted_tee.c:249:1: error: type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE' [-Werror=implicit-int] >> security/keys/trusted-keys/trusted_tee.c:249:1: warning: parameter names (without types) in function declaration cc1: some warnings being treated as errors vim +249 security/keys/trusted-keys/trusted_tee.c 243 244 static const struct tee_client_device_id trusted_key_id_table[] = { 245 {UUID_INIT(0xf04a0fe7, 0x1f5d, 0x4b9b, 246 0xab, 0xf7, 0x61, 0x9b, 0x85, 0xb4, 0xce, 0x8c)}, 247 {} 248 }; > 249 MODULE_DEVICE_TABLE(tee, trusted_key_id_table); 250 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org