Hi Jeremy, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on rafael-pm/linux-next] [also build test WARNING on linus/master v5.19-rc8 next-20220726] [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/Jeremy-Linton/ACPI-CPPC-Disable-FIE-if-registers-in-PCC-regions/20220726-230217 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220727/202207271136.DESdyKRY-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 83882606dbd7ffb0bdd3460356202d97705809c8) 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://github.com/intel-lab-lkp/linux/commit/a4dd80cfc857eef429f60e999bdc9479179d495e git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Jeremy-Linton/ACPI-CPPC-Disable-FIE-if-registers-in-PCC-regions/20220726-230217 git checkout a4dd80cfc857eef429f60e999bdc9479179d495e # 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 SHELL=/bin/bash drivers/cpufreq/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/cpufreq/intel_pstate.c:45: >> include/acpi/cppc_acpi.h:177:12: warning: no previous prototype for function 'cppc_perf_ctrs_in_pcc' [-Wmissing-prototypes] extern int cppc_perf_ctrs_in_pcc(void) ^ include/acpi/cppc_acpi.h:177:8: note: declare 'static' if the function is not intended to be used outside of this translation unit extern int cppc_perf_ctrs_in_pcc(void) ^ 1 warning generated. vim +/cppc_perf_ctrs_in_pcc +177 include/acpi/cppc_acpi.h 135 136 #ifdef CONFIG_ACPI_CPPC_LIB 137 extern int cppc_get_desired_perf(int cpunum, u64 *desired_perf); 138 extern int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf); 139 extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs); 140 extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls); 141 extern int cppc_set_enable(int cpu, bool enable); 142 extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps); 143 extern int cppc_perf_ctrs_in_pcc(void); 144 extern bool acpi_cpc_valid(void); 145 extern bool cppc_allow_fast_switch(void); 146 extern int acpi_get_psd_map(unsigned int cpu, struct cppc_cpudata *cpu_data); 147 extern unsigned int cppc_get_transition_latency(int cpu); 148 extern bool cpc_ffh_supported(void); 149 extern bool cpc_supported_by_cpu(void); 150 extern int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val); 151 extern int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val); 152 #else /* !CONFIG_ACPI_CPPC_LIB */ 153 static inline int cppc_get_desired_perf(int cpunum, u64 *desired_perf) 154 { 155 return -ENOTSUPP; 156 } 157 static inline int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) 158 { 159 return -ENOTSUPP; 160 } 161 static inline int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs) 162 { 163 return -ENOTSUPP; 164 } 165 static inline int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls) 166 { 167 return -ENOTSUPP; 168 } 169 static inline int cppc_set_enable(int cpu, bool enable) 170 { 171 return -ENOTSUPP; 172 } 173 static inline int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps) 174 { 175 return -ENOTSUPP; 176 } > 177 extern int cppc_perf_ctrs_in_pcc(void) 178 { 179 return false; 180 } 181 static inline bool acpi_cpc_valid(void) 182 { 183 return false; 184 } 185 static inline bool cppc_allow_fast_switch(void) 186 { 187 return false; 188 } 189 static inline unsigned int cppc_get_transition_latency(int cpu) 190 { 191 return CPUFREQ_ETERNAL; 192 } 193 static inline bool cpc_ffh_supported(void) 194 { 195 return false; 196 } 197 static inline int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val) 198 { 199 return -ENOTSUPP; 200 } 201 static inline int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val) 202 { 203 return -ENOTSUPP; 204 } 205 #endif /* !CONFIG_ACPI_CPPC_LIB */ 206 -- 0-DAY CI Kernel Test Service https://01.org/lkp
