linux-kernel - arch/arm/mach-omap2/board-generic.c:44:6: warning: no previous prototype for function 'tick

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Date:   Sun, 5 Jun 2022 08:12:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: arch/arm/mach-omap2/board-generic.c:44:6: warning: no previous
 prototype for function 'tick_broadcast'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   032dcf09e2bf7c822be25b4abef7a6c913870d98
commit: 09f6b27d5ddd9ad0ec096d1b0f8decdacc70f0f8 ARM: dove: multiplatform support
date:   9 weeks ago
config: arm-randconfig-r002-20220605 (https://download.01.org/0day-ci/archive/20220605/202206050825.OuexWb2X-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0a90b72c432d70aae035727ece4ba80ce820f381)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=09f6b27d5ddd9ad0ec096d1b0f8decdacc70f0f8
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 09f6b27d5ddd9ad0ec096d1b0f8decdacc70f0f8
        # 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=arm SHELL=/bin/bash

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/arm/mach-omap2/board-generic.c:44:6: warning: no previous prototype for function 'tick_broadcast' [-Wmissing-prototypes]
   void tick_broadcast(const struct cpumask *mask)
        ^
   arch/arm/mach-omap2/board-generic.c:44:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void tick_broadcast(const struct cpumask *mask)
   ^
   static 
   1 warning generated.


vim +/tick_broadcast +44 arch/arm/mach-omap2/board-generic.c

e69b4e1a7577c1 Tony Lindgren 2020-05-07  41  
d86ad463d6706d Tony Lindgren 2020-05-28  42  /* Used by am437x for ARM timer in non-SMP configurations */
d86ad463d6706d Tony Lindgren 2020-05-28  43  #if !defined(CONFIG_SMP) && defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)
d86ad463d6706d Tony Lindgren 2020-05-28 @44  void tick_broadcast(const struct cpumask *mask)
d86ad463d6706d Tony Lindgren 2020-05-28  45  {
d86ad463d6706d Tony Lindgren 2020-05-28  46  }
d86ad463d6706d Tony Lindgren 2020-05-28  47  #endif
d86ad463d6706d Tony Lindgren 2020-05-28  48  

:::::: The code at line 44 was first introduced by commit
:::::: d86ad463d6706d35167418660ae3293207ee9d1c ARM: OMAP2+: Fix regression for using local timer on non-SMP SoCs

:::::: TO: Tony Lindgren <tony@...mide.com>
:::::: CC: Arnd Bergmann <arnd@...db.de>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp