[tip:x86/cache 9/13] arch/x86/kernel/cpu/resctrl/rdtgroup.c:1456:6: warning: variable 'h' set but not used

kernel test robot
2023-01-24T12:37:58Z

tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/cache
head: 0a363fb23ee2f7beb08437ad7db86d195878d79f
commit: dc2a3e857981f859889933cf66ded117d74edff1 [9/13] x86/resctrl: Add interface to read mbm_total_bytes_config
config: x86_64-randconfig-a013-20230123 (https://download.01.org/0day-ci/archive/20230124/202301242015.kbzkVteJ-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/tip/tip.git/commit/?id=dc2a3e857981f859889933cf66ded117d74edff1
git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
git fetch --no-tags tip x86/cache
git checkout dc2a3e857981f859889933cf66ded117d74edff1
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/resctrl/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/resctrl/rdtgroup.c:1456:6: warning: variable 'h' set but not used [-Wunused-but-set-variable]
u32 h;
^
1 warning generated.

vim +/h +1456 arch/x86/kernel/cpu/resctrl/rdtgroup.c

1451
1452 static void mon_event_config_read(void *info)
1453 {
1454 struct mon_config_info *mon_info = info;
1455 unsigned int index;
> 1456 u32 h;
1457
1458 index = mon_event_config_index_get(mon_info->evtid);
1459 if (index == INVALID_CONFIG_INDEX) {
1460 pr_warn_once("Invalid event id %d\n", mon_info->evtid);
1461 return;
1462 }
1463 rdmsr(MSR_IA32_EVT_CFG_BASE + index, mon_info->mon_config, h);
1464
1465 /* Report only the valid event configuration bits */
1466 mon_info->mon_config &= MAX_EVT_CONFIG_BITS;
1467 }
1468

--
0-DAY CI Kernel Test Service