[kbuild-all] [morse:mpam/snapshot/v5.16 4/137] arch/x86/kernel/cpu/resctrl/core.c:417:6: warning: no previous prototype for 'domain_free'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v5.16 head: 364c1c42b229912132e1615c2ce15be7154e2156 commit: 22965510f006f9207f1615ffb3543c9314ac6d01 [4/137] x86/resctrl: Group struct rdt_hw_domain cleanup config: i386-randconfig-m021-20220124 (https://download.01.org/0day-ci/archive/20220126/202201260142.TfzTxnA2-lk...) 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/v5.16 git checkout 22965510f006f9207f1615ffb3543c9314ac6d01 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/cpu/resctrl/ 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 >>): 417 | void domain_free(struct rdt_hw_domain *hw_dom) | ^~~~~~~~~~~ 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