Hi Corentin, I love your patch! Perhaps something to improve: [auto build test WARNING on sunxi/sunxi/for-next] [also build test WARNING on cryptodev/master crypto/master v5.8-rc1] [cannot apply to next-20200621] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Corentin-Labbe/crypto-allwinner-add-xRNG-and-hashes/20200622-033401 base: https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git sunxi/for-next config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project ef455a55bcf2cfea04a99c361b182ad18b7f03f1) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>, old ones prefixed by <<): >> drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:277:5: warning: no previous prototype for function 'sun8i_ce_cipher_run' [-Wmissing-prototypes] int sun8i_ce_cipher_run(struct crypto_engine *engine, void *areq) ^ drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:277:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int sun8i_ce_cipher_run(struct crypto_engine *engine, void *areq) ^ static 1 warning generated. vim +/sun8i_ce_cipher_run +277 drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c 276 > 277 int sun8i_ce_cipher_run(struct crypto_engine *engine, void *areq) 278 { 279 struct skcipher_request *breq = container_of(areq, struct skcipher_request, base); 280 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(breq); 281 struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); 282 struct sun8i_ce_dev *ce = op->ce; 283 struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(breq); 284 int flow, err; 285 286 flow = rctx->flow; 287 err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(breq->base.tfm)); 288 crypto_finalize_skcipher_request(engine, breq, err); 289 return 0; 290 } 291 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org