Hi Arnd, I love your patch! Perhaps something to improve: [auto build test WARNING on vkoul-dmaengine/next] [also build test WARNING on tiwai-sound/for-next staging/staging-testing linus/master v5.16-rc2 next-20211125] [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/Arnd-Bergmann/dmaengine-kill-off-dma_slave_config-slave_id/20211115-165731 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next config: riscv-randconfig-r016-20211115 (https://download.01.org/0day-ci/archive/20211125/202111251538.x6sJNCka-lkp@xxxxxxxxx/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/f2e7f9ee67ce784864f75db39f20d1060c932279 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Arnd-Bergmann/dmaengine-kill-off-dma_slave_config-slave_id/20211115-165731 git checkout f2e7f9ee67ce784864f75db39f20d1060c932279 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv 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/dma/qcom/qcom_adm.c:712:18: warning: no previous prototype for function 'adm_dma_xlate' [-Wmissing-prototypes] struct dma_chan *adm_dma_xlate(struct of_phandle_args *dma_spec, ^ drivers/dma/qcom/qcom_adm.c:712:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct dma_chan *adm_dma_xlate(struct of_phandle_args *dma_spec, ^ static 1 warning generated. vim +/adm_dma_xlate +712 drivers/dma/qcom/qcom_adm.c 700 701 /** 702 * adm_dma_xlate 703 * @dma_spec: pointer to DMA specifier as found in the device tree 704 * @ofdma: pointer to DMA controller data 705 * 706 * This can use either 1-cell or 2-cell formats, the first cell 707 * identifies the slave device, while the optional second cell 708 * contains the crci value. 709 * 710 * Returns pointer to appropriate dma channel on success or NULL on error. 711 */ > 712 struct dma_chan *adm_dma_xlate(struct of_phandle_args *dma_spec, 713 struct of_dma *ofdma) 714 { 715 struct dma_device *dev = ofdma->of_dma_data; 716 struct dma_chan *chan, *candidate = NULL; 717 struct adm_chan *achan; 718 719 if (!dev || dma_spec->args_count > 2) 720 return NULL; 721 722 list_for_each_entry(chan, &dev->channels, device_node) 723 if (chan->chan_id == dma_spec->args[0]) { 724 candidate = chan; 725 break; 726 } 727 728 if (!candidate) 729 return NULL; 730 731 achan = to_adm_chan(candidate); 732 if (dma_spec->args_count == 2) 733 achan->crci = dma_spec->args[1]; 734 else 735 achan->crci = 0; 736 737 return dma_get_slave_channel(candidate); 738 } 739 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
