Messages in this thread | | | Date | Mon, 11 Jul 2022 16:47:16 +0800 | From | kernel test robot <> | Subject | arch/mips/boot/compressed/uart-16550.c:44:6: warning: no previous prototype for function 'putc' |
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Hi YunQiang,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 32346491ddf24599decca06190ebca03ff9de7f8 commit: 31b2f3dc851c65fee288612432c4fc956f1a264e MIPS: enable both vmlinux.gz.itb and vmlinuz for generic date: 6 months ago config: mips-buildonly-randconfig-r003-20220711 (https://download.01.org/0day-ci/archive/20220711/202207111655.stMxhZ0j-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6ce63e267aab79ca87bf63453d34dd3909ab978d) 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-mipsel-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=31b2f3dc851c65fee288612432c4fc956f1a264e git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 31b2f3dc851c65fee288612432c4fc956f1a264e # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
Note: functions only called from assembly code should be annotated with the asmlinkage attribute All warnings (new ones prefixed by >>):
>> arch/mips/boot/compressed/uart-16550.c:44:6: warning: no previous prototype for function 'putc' [-Wmissing-prototypes] void putc(char c) ^ arch/mips/boot/compressed/uart-16550.c:44:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void putc(char c) ^ static 1 warning generated.
vim +/putc +44 arch/mips/boot/compressed/uart-16550.c
1b93b3c3e94be2 Wu Zhangjin 2009-10-14 43 1b93b3c3e94be2 Wu Zhangjin 2009-10-14 @44 void putc(char c)
:::::: The code at line 44 was first introduced by commit :::::: 1b93b3c3e94be2605759735a89fc935ba5f58dcf MIPS: Add support for GZIP / BZIP2 / LZMA compressed kernel images
:::::: TO: Wu Zhangjin <wuzhangjin@gmail.com> :::::: CC: Ralf Baechle <ralf@linux-mips.org>
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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