[kbuild-all] [morse:mpam/snapshot/v5.15 4/139] arch/x86/kernel/cpu/resctrl/core.c:417:6: error: no previous prototype for 'domain_free'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v5.15 head: ce3629841262f725a5f3a327403fcaf0e604a85e commit: 7e1bcec5158ff703f38e7b7a2bc314795319fbc4 [4/139] x86/resctrl: Group struct rdt_hw_domain cleanup config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/commit/?i... git remote add morse https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git git fetch --no-tags morse mpam/snapshot/v5.15 git checkout 7e1bcec5158ff703f38e7b7a2bc314795319fbc4 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/x86/kernel/cpu/resctrl/core.c: In function 'cache_alloc_hsw_probe': arch/x86/kernel/cpu/resctrl/core.c:133:9: error: variable 'h' set but not used [-Werror=unused-but-set-variable] 133 | u32 l, h, max_cbm = BIT_MASK(20) - 1; | ^ arch/x86/kernel/cpu/resctrl/core.c: At top level: 417 | void domain_free(struct rdt_hw_domain *hw_dom) | ^~~~~~~~~~~ cc1: all warnings being treated as errors vim +/domain_free +417 arch/x86/kernel/cpu/resctrl/core.c 416 418 { 419 kfree(hw_dom->ctrl_val); 420 kfree(hw_dom->mbps_val); 421 kfree(hw_dom); 422 } 423 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org