tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 136057256686de39cc3a07c2e39ef6bc43003ff6 commit: c45361abb9185b1e172bd75eff51ad5f601ccae4 powerpc/85xx: fix timebase sync issue when CONFIG_HOTPLUG_CPU=n date: 6 weeks ago config: powerpc64-randconfig-r003-20211121 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c45361abb9185b1e172bd75eff51ad5f601ccae4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 89 | int __init mpc85xx_setup_pmc(void) | ^~~~~~~~~~~~~~~~~ vim +/mpc85xx_setup_pmc +89 arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c 56f1ba28071946 chenhui zhao 2015-11-20 88 56f1ba28071946 chenhui zhao 2015-11-20 @89 int __init mpc85xx_setup_pmc(void) :::::: The code at line 89 was first introduced by commit :::::: 56f1ba280719469bffc870b6b2d935f3a3019ea4 powerpc/mpc85xx: refactor the PM operations :::::: TO: chenhui zhao <chenhui.zhao(a)freescale.com&gt; :::::: CC: Scott Wood <oss(a)buserror.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org