[paulmck-rcu:dev.2023.04.26b 35/53] arch/mips/kernel/process.c:46:1: warning: 'noreturn' function does return

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2023.04.26b
head:   fcaa8c6ca41362484ff84124f7fd8929739eef45
commit: 2b927bfdda366c1719e021cd0e9688baf933c9cf [35/53] objtool: Fix for unreachable instruction warning
config: mips-randconfig-r012-20230427 (https://download.01.org/0day-ci/archive/20230428/202304280553.ZsGndQkE-lkp@xxxxxxxxx/config)
compiler: mipsel-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/paulmck/linux-rcu.git/commit/?id=2b927bfdda366c1719e021cd0e9688baf933c9cf
        git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
        git fetch --no-tags paulmck-rcu dev.2023.04.26b
        git checkout 2b927bfdda366c1719e021cd0e9688baf933c9cf
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash arch/mips/kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304280553.ZsGndQkE-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   arch/mips/kernel/process.c: In function 'arch_cpu_idle_dead':
>> arch/mips/kernel/process.c:46:1: warning: 'noreturn' function does return
      46 | }
         | ^


vim +/noreturn +46 arch/mips/kernel/process.c

^1da177e4c3f41 Linus Torvalds  2005-04-16  41  
cdbedc61c8d012 Thomas Gleixner 2013-03-21  42  #ifdef CONFIG_HOTPLUG_CPU
cdbedc61c8d012 Thomas Gleixner 2013-03-21  43  void arch_cpu_idle_dead(void)
^1da177e4c3f41 Linus Torvalds  2005-04-16  44  {
cdbedc61c8d012 Thomas Gleixner 2013-03-21  45  	play_dead();
cdbedc61c8d012 Thomas Gleixner 2013-03-21 @46  }
cdbedc61c8d012 Thomas Gleixner 2013-03-21  47  #endif
1b2bc75c1bde65 Ralf Baechle    2009-06-23  48  

:::::: The code at line 46 was first introduced by commit
:::::: cdbedc61c8d0122ad682815936f0d11df1fe5f57 mips: Use generic idle loop

:::::: TO: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
:::::: CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

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