tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android-4.19-stable head: 69be2ccce366f9ef3eec5cd1c9b8bfb3e1c2d16d commit: eb54e7323628bf827eab028d14d8171f8dd6777e [971/9999] ANDROID: mmc: MMC crypto API config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220209/202202090901.7ZCWAPk5-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e8bff9ae54a55b4dbfeb6ba55f723abbd81bf494) 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/ammarfaizi2/linux-block/commit/eb54e7323628bf827eab028... git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android-4.19-stable git checkout eb54e7323628bf827eab028d14d8171f8dd6777e # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/mmc/core/ 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 >>): void mmc_crypto_setup_queue(struct mmc_host *host, struct request_queue *q) ^ drivers/mmc/core/crypto.c:14:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void mmc_crypto_setup_queue(struct mmc_host *host, struct request_queue *q) ^ static void mmc_crypto_free_host(struct mmc_host *host) ^ drivers/mmc/core/crypto.c:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void mmc_crypto_free_host(struct mmc_host *host) ^ static void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq) ^ drivers/mmc/core/crypto.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq) ^ static 3 warnings generated. 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