Hi Cai, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on pci/next] [also build test WARNING on linus/master next-20230303] [cannot apply to vkoul-dmaengine/next pci/for-linus v6.2] [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/Cai-Huoqing/dmaengine-dw-edma-Rename-dw_edma_core_ops-structure-to-dw_edma_plat_ops/20230303-204905 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/20230303124642.5519-4-cai.huoqing%40linux.dev patch subject: [PATCH v5 3/4] dmaengine: dw-edma: Add support for native HDMA config: arm-randconfig-r016-20230303 (https://download.01.org/0day-ci/archive/20230304/202303041444.2M7BzjRU-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/intel-lab-lkp/linux/commit/061ed1e9b9bf70de12d7885880ee6302865a72d0 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Cai-Huoqing/dmaengine-dw-edma-Rename-dw_edma_core_ops-structure-to-dw_edma_plat_ops/20230303-204905 git checkout 061ed1e9b9bf70de12d7885880ee6302865a72d0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/dma/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303041444.2M7BzjRU-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/dma/dw-edma/dw-hdma-v0-core.c:12: >> drivers/dma/dw-edma/dw-hdma-v0-regs.h:71:4: warning: field msi_stop within 'struct dw_hdma_v0_ch_regs' is less aligned than 'union (unnamed union at drivers/dma/dw-edma/dw-hdma-v0-regs.h:65:2)' and is usually due to 'struct dw_hdma_v0_ch_regs' being packed, which can lead to unaligned accesses [-Wunaligned-access] } msi_stop; ^ >> drivers/dma/dw-edma/dw-hdma-v0-regs.h:78:4: warning: field msi_watermark within 'struct dw_hdma_v0_ch_regs' is less aligned than 'union (unnamed union at drivers/dma/dw-edma/dw-hdma-v0-regs.h:72:2)' and is usually due to 'struct dw_hdma_v0_ch_regs' being packed, which can lead to unaligned accesses [-Wunaligned-access] } msi_watermark; ^ >> drivers/dma/dw-edma/dw-hdma-v0-regs.h:85:4: warning: field msi_abort within 'struct dw_hdma_v0_ch_regs' is less aligned than 'union (unnamed union at drivers/dma/dw-edma/dw-hdma-v0-regs.h:79:2)' and is usually due to 'struct dw_hdma_v0_ch_regs' being packed, which can lead to unaligned accesses [-Wunaligned-access] } msi_abort; ^ 3 warnings generated. vim +71 drivers/dma/dw-edma/dw-hdma-v0-regs.h 26 27 struct dw_hdma_v0_ch_regs { 28 u32 ch_en; /* 0x0000 */ 29 u32 doorbell; /* 0x0004 */ 30 u32 prefetch; /* 0x0008 */ 31 u32 handshake; /* 0x000c */ 32 union { 33 u64 reg; /* 0x0010..0x0014 */ 34 struct { 35 u32 lsb; /* 0x0010 */ 36 u32 msb; /* 0x0014 */ 37 }; 38 } llp; 39 u32 cycle_sync; /* 0x0018 */ 40 u32 transfer_size; /* 0x001c */ 41 union { 42 u64 reg; /* 0x0020..0x0024 */ 43 struct { 44 u32 lsb; /* 0x0020 */ 45 u32 msb; /* 0x0024 */ 46 }; 47 } sar; 48 union { 49 u64 reg; /* 0x0028..0x002c */ 50 struct { 51 u32 lsb; /* 0x0028 */ 52 u32 msb; /* 0x002c */ 53 }; 54 } dar; 55 56 u32 watermark_en; /* 0x0030 */ 57 u32 control1; /* 0x0034 */ 58 u32 func_num; /* 0x0038 */ 59 u32 qos; /* 0x003c */ 60 u32 reserved; /* 0x0040..0x007c */ 61 u32 ch_stat; /* 0x0080 */ 62 u32 int_stat; /* 0x0084 */ 63 u32 int_setup; /* 0x0088 */ 64 u32 int_clear; /* 0x008c */ 65 union { 66 u64 reg; /* 0x0090..0x0094 */ 67 struct { 68 u32 lsb; /* 0x0090 */ 69 u32 msb; /* 0x0094 */ 70 }; > 71 } msi_stop; 72 union { 73 u64 reg; /* 0x0098..0x009c */ 74 struct { 75 u32 lsb; /* 0x0098 */ 76 u32 msb; /* 0x009c */ 77 }; > 78 } msi_watermark; 79 union { 80 u64 reg; /* 0x00a0..0x00a4 */ 81 struct { 82 u32 lsb; /* 0x00a0 */ 83 u32 msb; /* 0x00a4 */ 84 }; > 85 } msi_abort; 86 u32 msi_msgdata; /* 0x00a8 */ 87 } __packed; 88 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
