Hi "Stephan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on cryptodev/master crypto/master v5.9-rc1 next-20200820] [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/Stephan-M-ller/dev-random-a-new-... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git d162219c655c8cf8003128a13840d6c1e183fb80 config: nios2-allyesconfig (attached as .config) compiler: nios2-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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 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 >>): 226 | const static struct lrng_crypto_cb lrng_drbg_crypto_cb = { | ^~~~~ # https://github.com/0day-ci/linux/commit/9f9f02aa6db0f17774ad2e8646faf7380... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Stephan-M-ller/dev-random-a-new-approach-with-full-SP800-90B-compliance/20200820-165712 git checkout 9f9f02aa6db0f17774ad2e8646faf738097260e8 vim +/static +226 drivers/char/lrng/lrng_drbg.c 225 227 .lrng_drng_name = lrng_drbg_name, 228 .lrng_hash_name = lrng_hash_name, 229 .lrng_drng_alloc = lrng_drbg_drng_alloc, 230 .lrng_drng_dealloc = lrng_drbg_drng_dealloc, 231 .lrng_drng_seed_helper = lrng_drbg_drng_seed_helper, 232 .lrng_drng_generate_helper = lrng_drbg_drng_generate_helper, 233 .lrng_hash_alloc = lrng_drbg_hash_alloc, 234 .lrng_hash_dealloc = lrng_drbg_hash_dealloc, 235 .lrng_hash_digestsize = lrng_drbg_hash_digestsize, 236 .lrng_hash_buffer = lrng_drbg_hash_buffer, 237 }; 238 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org