[mark:arm64/alternatives/rework 15/18] arch/arm64/kernel/alternative.c:269:14: 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:   fad62c713602c963008575fd972d316569a32d12
commit: e5a9b245aeab3e0d83fbc7f9861351e8bb0e4823 [15/18] arm64: alternatives: add shared NOP callback
config: arm64-randconfig-r022-20220823 (https://download.01.org/0day-ci/archive/20220824/202208240946.qpIze2KD-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project b04d01c009d7f66bcca9138d2ce40999eedf104d)
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=e5a9b245aeab3e0d83fbc7f9861351e8bb0e4823
        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 e5a9b245aeab3e0d83fbc7f9861351e8bb0e4823
        # 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/ arch/arm64/mm/ 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:269:14: 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:269:9: 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 +269 arch/arm64/kernel/alternative.c

   268	
 > 269	noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,

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