linux-kernel - arch/arm64/kernel/alternative.c:267:14: warning: no previous prototype for 'alt_cb_patch

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Date:   Fri, 20 Jan 2023 01:43:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Ard Biesheuvel <ardb@...nel.org>
Subject: arch/arm64/kernel/alternative.c:267:14: warning: no previous
 prototype for 'alt_cb_patch_nops'

Hi Mark,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7287904c8771b77b9504f53623bb477065c19a58
commit: d926079f17bf8aa47485b6a55be1fc0175dbd1db arm64: alternatives: add shared NOP callback
date:   4 months ago
config: arm64-buildonly-randconfig-r001-20230119 (https://download.01.org/0day-ci/archive/20230120/202301200104.yU4JQ35I-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d926079f17bf8aa47485b6a55be1fc0175dbd1db
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d926079f17bf8aa47485b6a55be1fc0175dbd1db
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 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@...el.com>

All warnings (new ones prefixed by >>):

>> arch/arm64/kernel/alternative.c:267:14: warning: no previous prototype for 'alt_cb_patch_nops' [-Wmissing-prototypes]
     267 | noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,
         |              ^~~~~~~~~~~~~~~~~


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,

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests