Messages in this thread |  | | Date | Mon, 22 Feb 2021 15:08:55 +0800 | From | kernel test robot <> | Subject | arch/mips/pci/pci-ar2315.c:178:13: warning: no previous prototype for function 'dma_to_phys' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 31caf8b2a847214be856f843e251fc2ed2cd1075 commit: 7bc5c428a660d4d1bc95ba54bf4cb6bccf8c3029 dma-direct: remove __dma_to_phys date: 5 months ago config: mips-randconfig-r032-20210222 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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=7bc5c428a660d4d1bc95ba54bf4cb6bccf8c3029 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7bc5c428a660d4d1bc95ba54bf4cb6bccf8c3029 # 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@intel.com>
All warnings (new ones prefixed by >>):
arch/mips/pci/pci-ar2315.c:173:12: warning: no previous prototype for function '__phys_to_dma' [-Wmissing-prototypes] dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) ^ arch/mips/pci/pci-ar2315.c:173:1: 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 paddr) ^ static >> arch/mips/pci/pci-ar2315.c:178:13: 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/pci/pci-ar2315.c:178:1: 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 2 warnings generated.
vim +/dma_to_phys +178 arch/mips/pci/pci-ar2315.c
172 > 173 dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) 174 { 175 return paddr + ar2315_dev_offset(dev); 176 } 177 > 178 phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dma_addr) 179 { 180 return dma_addr - ar2315_dev_offset(dev); 181 } 182
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