[mark:arm64/alternatives/rework 8/9] arch/arm64/kernel/alternative.c:267:14: warning: no previous prototype for function 'alt_cb_patch_nops'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/alternatives/rework
head:   2d5c57125128db8b4934846ad39b00f79cd1637d
commit: 1121255e431de4b5c9a295d6fb6adac10e708534 [8/9] arm64: alternatives: add shared NOP callback
config: arm64-randconfig-r031-20220906 (https://download.01.org/0day-ci/archive/20220907/202209070048.vOezJs1e-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c55b41d5199d2394dd6cdb8f52180d8b81d809d4)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=1121255e431de4b5c9a295d6fb6adac10e708534
        git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
        git fetch --no-tags mark arm64/alternatives/rework
        git checkout 1121255e431de4b5c9a295d6fb6adac10e708534
        # 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=arm64 SHELL=/bin/bash arch/arm64/kernel/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> arch/arm64/kernel/alternative.c:267:14: warning: no previous prototype for function 'alt_cb_patch_nops' [-Wmissing-prototypes]
   noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,
                ^
   arch/arm64/kernel/alternative.c:267:9: note: declare 'static' if the function is not intended to be used outside of this translation unit
   noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,
           ^
           static 
   1 warning generated.


vim +/alt_cb_patch_nops +267 arch/arm64/kernel/alternative.c

   266	
 > 267	noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,

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