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Miller" , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Koichiro Den , Niklas Cassel Cc: oe-kbuild-all@lists.linux.dev, netdev@vger.kernel.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, Frank Li Subject: Re: [PATCH 8/8] crypto: atmel: Use dmaengine_prep_slave_single_config() API Message-ID: <202512110702.EhO0gmFG-lkp@intel.com> References: <20251208-dma_prep_config-v1-8-53490c5e1e2a@nxp.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251208-dma_prep_config-v1-8-53490c5e1e2a@nxp.com> Hi Frank, kernel test robot noticed the following build warnings: [auto build test WARNING on bc04acf4aeca588496124a6cf54bfce3db327039] url: https://github.com/intel-lab-lkp/linux/commits/Frank-Li/dmaengine-Add-API-to-combine-configuration-and-preparation-sg-and-single/20251209-011820 base: bc04acf4aeca588496124a6cf54bfce3db327039 patch link: https://lore.kernel.org/r/20251208-dma_prep_config-v1-8-53490c5e1e2a%40nxp.com patch subject: [PATCH 8/8] crypto: atmel: Use dmaengine_prep_slave_single_config() API config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20251211/202512110702.EhO0gmFG-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512110702.EhO0gmFG-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202512110702.EhO0gmFG-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/crypto/atmel-aes.c: In function 'atmel_aes_dma_transfer_start': >> drivers/crypto/atmel-aes.c:798:13: warning: unused variable 'err' [-Wunused-variable] 798 | int err; | ^~~ vim +/err +798 drivers/crypto/atmel-aes.c cadc4ab8f6f737 Nicolas Royer 2013-02-20 788 bbe628ed897d72 Cyrille Pitchen 2015-12-17 789 static int atmel_aes_dma_transfer_start(struct atmel_aes_dev *dd, bbe628ed897d72 Cyrille Pitchen 2015-12-17 790 enum dma_slave_buswidth addr_width, bbe628ed897d72 Cyrille Pitchen 2015-12-17 791 enum dma_transfer_direction dir, bbe628ed897d72 Cyrille Pitchen 2015-12-17 792 u32 maxburst) bbe628ed897d72 Cyrille Pitchen 2015-12-17 793 { bbe628ed897d72 Cyrille Pitchen 2015-12-17 794 struct dma_async_tx_descriptor *desc; bbe628ed897d72 Cyrille Pitchen 2015-12-17 795 struct dma_slave_config config; bbe628ed897d72 Cyrille Pitchen 2015-12-17 796 dma_async_tx_callback callback; bbe628ed897d72 Cyrille Pitchen 2015-12-17 797 struct atmel_aes_dma *dma; bbe628ed897d72 Cyrille Pitchen 2015-12-17 @798 int err; bbe628ed897d72 Cyrille Pitchen 2015-12-17 799 bbe628ed897d72 Cyrille Pitchen 2015-12-17 800 memset(&config, 0, sizeof(config)); bbe628ed897d72 Cyrille Pitchen 2015-12-17 801 config.src_addr_width = addr_width; bbe628ed897d72 Cyrille Pitchen 2015-12-17 802 config.dst_addr_width = addr_width; bbe628ed897d72 Cyrille Pitchen 2015-12-17 803 config.src_maxburst = maxburst; bbe628ed897d72 Cyrille Pitchen 2015-12-17 804 config.dst_maxburst = maxburst; bbe628ed897d72 Cyrille Pitchen 2015-12-17 805 bbe628ed897d72 Cyrille Pitchen 2015-12-17 806 switch (dir) { bbe628ed897d72 Cyrille Pitchen 2015-12-17 807 case DMA_MEM_TO_DEV: bbe628ed897d72 Cyrille Pitchen 2015-12-17 808 dma = &dd->src; bbe628ed897d72 Cyrille Pitchen 2015-12-17 809 callback = NULL; bbe628ed897d72 Cyrille Pitchen 2015-12-17 810 config.dst_addr = dd->phys_base + AES_IDATAR(0); bbe628ed897d72 Cyrille Pitchen 2015-12-17 811 break; cadc4ab8f6f737 Nicolas Royer 2013-02-20 812 bbe628ed897d72 Cyrille Pitchen 2015-12-17 813 case DMA_DEV_TO_MEM: bbe628ed897d72 Cyrille Pitchen 2015-12-17 814 dma = &dd->dst; bbe628ed897d72 Cyrille Pitchen 2015-12-17 815 callback = atmel_aes_dma_callback; bbe628ed897d72 Cyrille Pitchen 2015-12-17 816 config.src_addr = dd->phys_base + AES_ODATAR(0); bbe628ed897d72 Cyrille Pitchen 2015-12-17 817 break; cadc4ab8f6f737 Nicolas Royer 2013-02-20 818 bbe628ed897d72 Cyrille Pitchen 2015-12-17 819 default: cadc4ab8f6f737 Nicolas Royer 2013-02-20 820 return -EINVAL; cadc4ab8f6f737 Nicolas Royer 2013-02-20 821 } cadc4ab8f6f737 Nicolas Royer 2013-02-20 822 c8695132080931 Frank Li 2025-12-08 823 desc = dmaengine_prep_slave_sg_config(dma->chan, dma->sg, dma->sg_len, c8695132080931 Frank Li 2025-12-08 824 dir, c8695132080931 Frank Li 2025-12-08 825 DMA_PREP_INTERRUPT | DMA_CTRL_ACK, c8695132080931 Frank Li 2025-12-08 826 &config); bbe628ed897d72 Cyrille Pitchen 2015-12-17 827 if (!desc) bbe628ed897d72 Cyrille Pitchen 2015-12-17 828 return -ENOMEM; bbe628ed897d72 Cyrille Pitchen 2015-12-17 829 bbe628ed897d72 Cyrille Pitchen 2015-12-17 830 desc->callback = callback; bbe628ed897d72 Cyrille Pitchen 2015-12-17 831 desc->callback_param = dd; bbe628ed897d72 Cyrille Pitchen 2015-12-17 832 dmaengine_submit(desc); bbe628ed897d72 Cyrille Pitchen 2015-12-17 833 dma_async_issue_pending(dma->chan); bbe628ed897d72 Cyrille Pitchen 2015-12-17 834 bbe628ed897d72 Cyrille Pitchen 2015-12-17 835 return 0; cadc4ab8f6f737 Nicolas Royer 2013-02-20 836 } cadc4ab8f6f737 Nicolas Royer 2013-02-20 837 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki