Re: [PATCH 3/3] virtio-crypto: implement RSA algorithm

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Hi zhenwei,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on herbert-cryptodev-2.6/master]
[also build test WARNING on herbert-crypto-2.6/master linux/master linus/master v5.16 next-20220121]
[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/zhenwei-pi/Introduce-akcipher-service-for-virtio-crypto/20220121-102730
base:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
config: hexagon-randconfig-r026-20220120 (https://download.01.org/0day-ci/archive/20220121/202201211427.TgczsUOo-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d4baf3b1322b84816aa623d8e8cb45a49cb68b84)
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/0day-ci/linux/commit/fa1045d13dd16399ab0287c599719a977892cf05
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review zhenwei-pi/Introduce-akcipher-service-for-virtio-crypto/20220121-102730
        git checkout fa1045d13dd16399ab0287c599719a977892cf05
        # 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=hexagon SHELL=/bin/bash drivers/crypto/virtio/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/crypto/virtio/virtio_crypto_akcipher_algo.c:276:5: warning: no previous prototype for function 'virtio_crypto_rsa_do_req' [-Wmissing-prototypes]
   int virtio_crypto_rsa_do_req(struct crypto_engine *engine, void *vreq)
       ^
   drivers/crypto/virtio/virtio_crypto_akcipher_algo.c:276:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int virtio_crypto_rsa_do_req(struct crypto_engine *engine, void *vreq)
   ^
   static 
   1 warning generated.


vim +/virtio_crypto_rsa_do_req +276 drivers/crypto/virtio/virtio_crypto_akcipher_algo.c

   275	
 > 276	int virtio_crypto_rsa_do_req(struct crypto_engine *engine, void *vreq)
   277	{
   278		struct akcipher_request *req = container_of(vreq, struct akcipher_request, base);
   279		struct virtio_crypto_akcipher_request *vc_akcipher_req = akcipher_request_ctx(req);
   280		struct virtio_crypto_request *vc_req = &vc_akcipher_req->base;
   281		struct virtio_crypto_akcipher_ctx *ctx = vc_akcipher_req->akcipher_ctx;
   282		struct virtio_crypto *vcrypto = ctx->vcrypto;
   283		struct data_queue *data_vq = vc_req->dataq;
   284		struct virtio_crypto_op_header *header;
   285		struct virtio_crypto_akcipher_data_req *akcipher_req;
   286		int ret;
   287	
   288		vc_req->sgs = NULL;
   289		vc_req->req_data = kzalloc_node(sizeof(*vc_req->req_data),
   290			GFP_KERNEL, dev_to_node(&vcrypto->vdev->dev));
   291		if (!vc_req->req_data)
   292			return -ENOMEM;
   293	
   294		/* build request header */
   295		header = &vc_req->req_data->header;
   296		header->opcode = cpu_to_le32(vc_akcipher_req->opcode);
   297		header->algo = cpu_to_le32(VIRTIO_CRYPTO_AKCIPHER_RSA);
   298		header->session_id = cpu_to_le64(ctx->session_id);
   299	
   300		/* build request akcipher data */
   301		akcipher_req = &vc_req->req_data->u.akcipher_req;
   302		akcipher_req->para.src_data_len = cpu_to_le32(req->src_len);
   303		akcipher_req->para.dst_data_len = cpu_to_le32(req->dst_len);
   304	
   305		ret = __virtio_crypto_akcipher_do_req(vc_akcipher_req, req, data_vq);
   306		if (ret < 0) {
   307			kfree_sensitive(vc_req->req_data);
   308			vc_req->req_data = NULL;
   309			return ret;
   310		}
   311	
   312		return 0;
   313	}
   314	

---
0-DAY CI Kernel Test Service, Intel Corporation
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