Hi Samuel, I love your patch! Perhaps something to improve: [auto build test WARNING on vkoul-dmaengine/next] [also build test WARNING on sunxi/sunxi/for-next v5.18-rc2 next-20220411] [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/intel-lab-lkp/linux/commits/Samuel-Holland/dmaengine-sun6i-Allwinner-D1-support/20220411-124826 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next config: hexagon-randconfig-r041-20220410 (https://download.01.org/0day-ci/archive/20220411/202204111641.yuvoMU5q-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c6e83f560f06cdfe8aa47b248d8bdc58f947274b) 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/280420721fd264a03a3d3f9fbe2b4e6bfddd0f79 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Samuel-Holland/dmaengine-sun6i-Allwinner-D1-support/20220411-124826 git checkout 280420721fd264a03a3d3f9fbe2b4e6bfddd0f79 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/dma/ 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/sun6i-dma.c:253:15: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat] pchan->idx, pchan->base - sdev->base, ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dev_printk.h:155:39: note: expanded from macro 'dev_dbg' dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/dynamic_debug.h:167:19: note: expanded from macro 'dynamic_dev_dbg' dev, fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/dynamic_debug.h:152:56: note: expanded from macro '_dynamic_func_call' __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__) ^~~~~~~~~~~ include/linux/dynamic_debug.h:134:15: note: expanded from macro '__dynamic_func_call' func(&id, ##__VA_ARGS__); \ ^~~~~~~~~~~ 1 warning generated. vim +253 drivers/dma/sun6i-dma.c 240 241 static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev, 242 struct sun6i_pchan *pchan) 243 { 244 dev_dbg(sdev->slave.dev, "Chan %d reg: 0x%lx\n" 245 "\t___en(%04x): \t0x%08x\n" 246 "\tpause(%04x): \t0x%08x\n" 247 "\tstart(%04x): \t0x%08x\n" 248 "\t__cfg(%04x): \t0x%08x\n" 249 "\t__src(%04x): \t0x%08x\n" 250 "\t__dst(%04x): \t0x%08x\n" 251 "\tcount(%04x): \t0x%08x\n" 252 "\t_para(%04x): \t0x%08x\n\n", > 253 pchan->idx, pchan->base - sdev->base, 254 DMA_CHAN_ENABLE, 255 readl(pchan->base + DMA_CHAN_ENABLE), 256 DMA_CHAN_PAUSE, 257 readl(pchan->base + DMA_CHAN_PAUSE), 258 DMA_CHAN_LLI_ADDR, 259 readl(pchan->base + DMA_CHAN_LLI_ADDR), 260 DMA_CHAN_CUR_CFG, 261 readl(pchan->base + DMA_CHAN_CUR_CFG), 262 DMA_CHAN_CUR_SRC, 263 readl(pchan->base + DMA_CHAN_CUR_SRC), 264 DMA_CHAN_CUR_DST, 265 readl(pchan->base + DMA_CHAN_CUR_DST), 266 DMA_CHAN_CUR_CNT, 267 readl(pchan->base + DMA_CHAN_CUR_CNT), 268 DMA_CHAN_CUR_PARA, 269 readl(pchan->base + DMA_CHAN_CUR_PARA)); 270 } 271 -- 0-DAY CI Kernel Test Service https://01.org/lkp