Hi Christoph, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62 commit: 5ceda74093a5c1c3f42a02b894df031f3bbc9af1 dma-direct: rename and cleanup __phys_to_dma date: 4 months ago config: mips-randconfig-r021-20210107 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 5c951623bc8965fa1e89660f2f5f4a2944e4981a) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5ceda74093a5c1c3f42a02b894df031f3bbc9af1 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 5ceda74093a5c1c3f42a02b894df031f3bbc9af1 # 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 <[email protected]> All warnings (new ones prefixed by >>): >> arch/mips/bmips/dma.c:43:12: warning: no previous prototype for function >> 'phys_to_dma' [-Wmissing-prototypes] dma_addr_t phys_to_dma(struct device *dev, phys_addr_t pa) ^ arch/mips/bmips/dma.c:43:1: note: declare 'static' if the function is not intended to be used outside of this translation unit dma_addr_t phys_to_dma(struct device *dev, phys_addr_t pa) ^ static arch/mips/bmips/dma.c:55:13: warning: no previous prototype for function 'dma_to_phys' [-Wmissing-prototypes] phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) ^ arch/mips/bmips/dma.c:55:1: note: declare 'static' if the function is not intended to be used outside of this translation unit phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) ^ static arch/mips/bmips/dma.c:67:6: warning: no previous prototype for function 'arch_sync_dma_for_cpu_all' [-Wmissing-prototypes] void arch_sync_dma_for_cpu_all(void) ^ arch/mips/bmips/dma.c:67:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void arch_sync_dma_for_cpu_all(void) ^ static 3 warnings generated. vim +/phys_to_dma +43 arch/mips/bmips/dma.c 42 > 43 dma_addr_t phys_to_dma(struct device *dev, phys_addr_t pa) 44 { 45 struct bmips_dma_range *r; 46 47 for (r = bmips_dma_ranges; r && r->size; r++) { 48 if (pa >= r->child_addr && 49 pa < (r->child_addr + r->size)) 50 return pa - r->child_addr + r->parent_addr; 51 } 52 return pa; 53 } 54 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
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