Hi Amelie, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on atorgue-stm32/stm32-next] [also build test WARNING on lwn-2.6/docs-next vkoul-dmaengine/next linus/master v5.19-rc6 next-20220715] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Amelie-Delaunay/STM32-DMA-MDMA-chaining-feature/20220713-222358 base: https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next config: hexagon-buildonly-randconfig-r004-20220715 (https://download.01.org/0day-ci/archive/20220716/202207160125.oxFFO8ZQ-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 2da550140aa98cf6a3e96417c87f1e89e3a26047) 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/intel-lab-lkp/linux/commit/e1f4515659df0475a1e4d6dafd8559771c2b49b0 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Amelie-Delaunay/STM32-DMA-MDMA-chaining-feature/20220713-222358 git checkout e1f4515659df0475a1e4d6dafd8559771c2b49b0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/dma/ drivers/iio/adc/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/dma/stm32-dma.c:211: warning: expecting prototype for struct stm32_dma_mdma_cfg. Prototype was for struct stm32_dma_mdma_config instead vim +211 drivers/dma/stm32-dma.c 199 200 /** 201 * struct stm32_dma_mdma_cfg - STM32 DMA MDMA configuration 202 * @stream_id: DMA request to trigger STM32 MDMA transfer 203 * @ifcr: DMA interrupt flag clear register address, 204 * used by STM32 MDMA to clear DMA Transfer Complete flag 205 * @tcf: DMA Transfer Complete flag 206 */ 207 struct stm32_dma_mdma_config { 208 u32 stream_id; 209 u32 ifcr; 210 u32 tcf; > 211 }; 212 -- 0-DAY CI Kernel Test Service https://01.org/lkp