Hi Jiaxun, kernel test robot noticed the following build warnings: [auto build test WARNING on tty/tty-testing] [also build test WARNING on tty/tty-next tty/tty-linus linus/master v6.6 next-20231030] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jiaxun-Yang/MIPS-zboot-Add-UHI-semihosting-debug-print-support/20231028-032719 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing patch link: https://lore.kernel.org/r/20231027182650.281405-7-jiaxun.yang%40flygoat.com patch subject: [PATCH 2/3] MIPS: zboot: Add UHI semihosting debug print support config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20231101/202311010521.7YJZiVJm-lkp@xxxxxxxxx/config) compiler: mips-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231101/202311010521.7YJZiVJm-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202311010521.7YJZiVJm-lkp@xxxxxxxxx/ Note: functions only called from assembly code should be annotated with the asmlinkage attribute All warnings (new ones prefixed by >>): >> arch/mips/boot/compressed/dbg-uhi.c:8:6: warning: no previous prototype for 'puts' [-Wmissing-prototypes] 8 | void puts(const char *s) | ^~~~ vim +/puts +8 arch/mips/boot/compressed/dbg-uhi.c 7 > 8 void puts(const char *s) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
