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Mon, 11 Apr 2022 16:40:00 +0000 Date: Tue, 12 Apr 2022 00:39:48 +0800 From: kernel test robot To: Ohad Sharabi Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Oded Gabbay Subject: [ogabbay:habanalabs-next 33/34] drivers/misc/habanalabs/gaudi/gaudi.c:5041:5: warning: no previous prototype for 'gaudi_get_dma_desc_list_size' Message-ID: <202204120049.nXnmmmRn-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git habanalabs-next head: e3e6111dba082a2d77e80ae99a2de75adff9b875 commit: 7d3600a8f9ffc668f66678211d41eadb224a4dd8 [33/34] habanalabs: use for_each_sgtable_dma_sg for dma sgt config: sparc-buildonly-randconfig-r006-20220411 (https://download.01.org/0day-ci/archive/20220412/202204120049.nXnmmmRn-lkp@intel.com/config) compiler: sparc64-linux-gcc (GCC) 11.2.0 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/ogabbay/linux.git/commit/?id=7d3600a8f9ffc668f66678211d41eadb224a4dd8 git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git git fetch --no-tags ogabbay habanalabs-next git checkout 7d3600a8f9ffc668f66678211d41eadb224a4dd8 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc SHELL=/bin/bash drivers/misc/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/misc/habanalabs/gaudi/gaudi.c:5041:5: warning: no previous prototype for 'gaudi_get_dma_desc_list_size' [-Wmissing-prototypes] 5041 | u32 gaudi_get_dma_desc_list_size(struct hl_device *hdev, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/gaudi_get_dma_desc_list_size +5041 drivers/misc/habanalabs/gaudi/gaudi.c 5040 > 5041 u32 gaudi_get_dma_desc_list_size(struct hl_device *hdev, 5042 struct sg_table *sgt) 5043 { 5044 struct scatterlist *sg, *sg_next_iter; 5045 u32 count, dma_desc_cnt; 5046 u64 len, len_next; 5047 dma_addr_t addr, addr_next; 5048 5049 dma_desc_cnt = 0; 5050 5051 for_each_sgtable_dma_sg(sgt, sg, count) { 5052 len = sg_dma_len(sg); 5053 addr = sg_dma_address(sg); 5054 5055 if (len == 0) 5056 break; 5057 5058 while ((count + 1) < sgt->nents) { 5059 sg_next_iter = sg_next(sg); 5060 len_next = sg_dma_len(sg_next_iter); 5061 addr_next = sg_dma_address(sg_next_iter); 5062 5063 if (len_next == 0) 5064 break; 5065 5066 if ((addr + len == addr_next) && 5067 (len + len_next <= DMA_MAX_TRANSFER_SIZE)) { 5068 len += len_next; 5069 count++; 5070 sg = sg_next_iter; 5071 } else { 5072 break; 5073 } 5074 } 5075 5076 dma_desc_cnt++; 5077 } 5078 5079 return dma_desc_cnt * sizeof(struct packet_lin_dma); 5080 } 5081 -- 0-DAY CI Kernel Test Service https://01.org/lkp