tree: git://git.infradead.org/users/hch/misc.git dma-ranges.3 head: e65920d7e325dcfaa9c560553c007cddfa199868 commit: e65920d7e325dcfaa9c560553c007cddfa199868 [25/25] dma-mapping: introduce DMA range map, supplanting dma_pfn_offset config: arm64-randconfig-r024-20200914 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b2c32c90bab09a6e2c1f370429db26017a182143) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu git checkout e65920d7e325dcfaa9c560553c007cddfa199868 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from arch/arm64/mm/init.c:23: >> include/linux/dma-direct.h:82:38: error: use of undeclared identifier 'dma_addr'; did you mean 'dev_addr'? paddr = translate_dma_to_phys(dev, dma_addr); ^~~~~~~~ dev_addr include/linux/dma-direct.h:77:70: note: 'dev_addr' declared here static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) ^ include/linux/dma-direct.h:84:11: error: use of undeclared identifier 'dma_addr'; did you mean 'dev_addr'? paddr = dma_addr; ^~~~~~~~ dev_addr include/linux/dma-direct.h:77:70: note: 'dev_addr' declared here static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) ^ 2 errors generated. -- In file included from kernel/dma/direct.c:10: >> include/linux/dma-direct.h:82:38: error: use of undeclared identifier 'dma_addr'; did you mean 'dev_addr'? paddr = translate_dma_to_phys(dev, dma_addr); ^~~~~~~~ dev_addr include/linux/dma-direct.h:77:70: note: 'dev_addr' declared here static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) ^ include/linux/dma-direct.h:84:11: error: use of undeclared identifier 'dma_addr'; did you mean 'dev_addr'? paddr = dma_addr; ^~~~~~~~ dev_addr include/linux/dma-direct.h:77:70: note: 'dev_addr' declared here static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) ^ >> kernel/dma/direct.c:135:20: warning: shift count >= width of type [-Wshift-count-overflow] phys_limit < DMA_BIT_MASK(64) && ^~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:139:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ ~~~ 1 warning and 2 errors generated. -- In file included from kernel/dma/swiotlb.c:24: >> include/linux/dma-direct.h:82:38: error: use of undeclared identifier 'dma_addr'; did you mean 'dev_addr'? paddr = translate_dma_to_phys(dev, dma_addr); ^~~~~~~~ dev_addr include/linux/dma-direct.h:77:70: note: 'dev_addr' declared here static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) ^ include/linux/dma-direct.h:84:11: error: use of undeclared identifier 'dma_addr'; did you mean 'dev_addr'? paddr = dma_addr; ^~~~~~~~ dev_addr include/linux/dma-direct.h:77:70: note: 'dev_addr' declared here static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) ^ kernel/dma/swiotlb.c:278:1: warning: no previous prototype for function 'swiotlb_late_init_with_default_size' [-Wmissing-prototypes] swiotlb_late_init_with_default_size(size_t default_size) ^ kernel/dma/swiotlb.c:277:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 1 warning and 2 errors generated. git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc dma-ranges.3 git checkout e65920d7e325dcfaa9c560553c007cddfa199868 vim +82 include/linux/dma-direct.h 76 77 static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr) 78 { 79 phys_addr_t paddr; 80 81 if (dev->dma_range_map) > 82 paddr = translate_dma_to_phys(dev, dma_addr); 83 else 84 paddr = dma_addr; 85 86 return __sme_clr(paddr); 87 } 88 #endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */ 89 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org