tree: https://android.googlesource.com/kernel/common android-5.4-stable head: 2c6b2164e6aaab792c736a502298203240361653 commit: 555cf12eb672727979bc7b7840c7503f3de27220 [1/3] ANDROID: mmc: MMC crypto API config: arm-randconfig-r031-20210416 (attached as .config) compiler: arm-linux-gnueabi-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 git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android-5.4-stable git checkout 555cf12eb672727979bc7b7840c7503f3de27220 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm 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_setup_queue(struct mmc_host *host, struct request_queue *q) | ^~~~~~~~~~~~~~~~~~~~~~ 21 | void mmc_crypto_free_host(struct mmc_host *host) | ^~~~~~~~~~~~~~~~~~~~ 26 | void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/mmc_crypto_setup_queue +14 drivers/mmc/core/crypto.c 13 15 { 16 if (host->caps2 & MMC_CAP2_CRYPTO) 17 q->ksm = host->ksm; 18 } 19 EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue); 20 22 { 23 keyslot_manager_destroy(host->ksm); 24 } 25 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org