tree: https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git wip-mmc-crypto head: 0459b119ab1a16bb25f8ef21f59640778b92b4ba commit: 219ea4ffaa6a954501aed0037a4b1ae3bd0e2ef7 [1/7] mmc: add basic support for inline encryption 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 # https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git/commit... git remote add ebiggers https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git git fetch --no-tags ebiggers wip-mmc-crypto git checkout 219ea4ffaa6a954501aed0037a4b1ae3bd0e2ef7 # 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 >>): 14 | void mmc_crypto_set_initial_state(struct mmc_host *host) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/core/crypto.c:21:6: warning: no previous prototype for 'mmc_crypto_setup_queue' [-Wmissing-prototypes] 21 | void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/core/crypto.c:28:6: warning: no previous prototype for 'mmc_crypto_free_host' [-Wmissing-prototypes] 28 | void mmc_crypto_free_host(struct mmc_host *host) | ^~~~~~~~~~~~~~~~~~~~ drivers/mmc/core/crypto.c:34:6: warning: no previous prototype for 'mmc_crypto_prepare_req' [-Wmissing-prototypes] 34 | void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/mmc_crypto_set_initial_state +14 drivers/mmc/core/crypto.c 13 15 { 16 /* Reset might clear all keys, so reprogram all the keys. */ 17 if (host->caps2 & MMC_CAP2_CRYPTO) 18 blk_ksm_reprogram_all_keys(&host->ksm); 19 } 20 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org