tree: git://git.infradead.org/users/hch/block.git dma-ranges.3 head: cbf6ef97bdb2a2ccc73ba09d2f6a744fe5423a52 commit: cbf6ef97bdb2a2ccc73ba09d2f6a744fe5423a52 [9/9] dma-mapping: introduce DMA range map, supplanting dma_pfn_offset config: mips-randconfig-r034-20200909 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0a5dc7effb191eff740e0e7ae7bd8e1f6bdb3ad9) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu git checkout cbf6ef97bdb2a2ccc73ba09d2f6a744fe5423a52 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): for (r = map; r->size; r++) ~^ include/linux/device.h:564:15: note: forward declaration of 'struct bus_dma_region' const struct bus_dma_region *dma_range_map; ^ for (r = map; r->size; r++) ~^ include/linux/device.h:564:15: note: forward declaration of 'struct bus_dma_region' const struct bus_dma_region *dma_range_map; ^ new_map = kmemdup(map, array_size(num_ranges + 1, sizeof(*map)), ^~~~~~ include/linux/device.h:564:15: note: forward declaration of 'struct bus_dma_region' const struct bus_dma_region *dma_range_map; ^ 3 errors generated. git remote add hch-block git://git.infradead.org/users/hch/block.git git fetch --no-tags hch-block dma-ranges.3 git checkout cbf6ef97bdb2a2ccc73ba09d2f6a744fe5423a52 vim +469 drivers/remoteproc/remoteproc_core.c 460 461 static int copy_dma_range_map(struct device *to, struct device *from) 462 { 463 const struct bus_dma_region *map = from->dma_range_map, *new_map, *r; 464 int num_ranges = 0; 465 466 if (!map) 467 return 0; 468 470 num_ranges++; 471 473 GFP_KERNEL); 474 if (!new_map) 475 return -ENOMEM; 476 to->dma_range_map = new_map; 477 return 0; 478 } 479 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org