Hi Perry, I love your patch! Perhaps something to improve: [auto build test WARNING on rafael-pm/linux-next] [also build test WARNING on tip/x86/core v6.0] [cannot apply to linus/master next-20221007] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Perry-Yuan/Implement-AMD-Pstate-EPP-Driver/20221009-151325 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-allyesconfig compiler: gcc-11 (Debian 11.3.0-5) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/25572929f89d2f4c44fa79dcf0a30c18182c3162 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Perry-Yuan/Implement-AMD-Pstate-EPP-Driver/20221009-151325 git checkout 25572929f89d2f4c44fa79dcf0a30c18182c3162 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/cpufreq/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): drivers/cpufreq/amd-pstate.c: In function 'update_boost_state': >> drivers/cpufreq/amd-pstate.c:998:29: warning: variable 'cpudata' set but not used [-Wunused-but-set-variable] 998 | struct amd_cpudata *cpudata; | ^~~~~~~ vim +/cpudata +998 drivers/cpufreq/amd-pstate.c 994 995 static inline void update_boost_state(void) 996 { 997 u64 misc_en; > 998 struct amd_cpudata *cpudata; 999 1000 cpudata = all_cpu_data[0]; 1001 rdmsrl(MSR_AMD_CPPC_HW_CTL, misc_en); 1002 global_params.cppc_boost_disabled = misc_en & AMD_CPPC_PRECISION_BOOST_ENABLED; 1003 } 1004 -- 0-DAY CI Kernel Test Service https://01.org/lkp