Hi "Andrew-sh.Cheng", Thank you for the patch! Yet something to improve: [auto build test ERROR on pm/linux-next] [also build test ERROR on robh/for-next linus/master v5.7-rc6 next-20200519] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Andrew-sh-Cheng/Add-cpufreq-and-... base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: parisc-randconfig-r013-20200520 (attached as .config) compiler: hppa64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): hppa64-linux-ld: drivers/opp/cpu.o: in function `_of_lazy_link_required_tables': hppa64-linux-ld: drivers/opp/debugfs.o: in function `_of_lazy_link_required_tables': drivers/opp/debugfs.c:126: multiple definition of `_of_lazy_link_required_tables'; drivers/opp/core.o:include/linux/refcount.h:206: first defined here vim +226 drivers/opp/cpu.c 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 194 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 195 /** 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 196 * dev_pm_opp_get_sharing_cpus() - Get cpumask of CPUs sharing OPPs with @cpu_dev 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 197 * @cpu_dev: CPU device for which we do this operation 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 198 * @cpumask: cpumask to update with information of sharing CPUs 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 199 * 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 200 * This updates the @cpumask with CPUs that are sharing OPPs with @cpu_dev. 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 201 * 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 202 * Returns -ENODEV if OPP table isn't already present and -EINVAL if the OPP 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 203 * table's status is access-unknown. 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 204 */ ddbb74bc70c0db drivers/base/power/opp/cpu.c Arnd Bergmann 2016-04-30 205 int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 206 { 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 207 struct opp_device *opp_dev; 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 208 struct opp_table *opp_table; 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 209 int ret = 0; 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 210 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 211 opp_table = _find_opp_table(cpu_dev); 5b650b388844f2 drivers/base/power/opp/cpu.c Viresh Kumar 2017-01-23 212 if (IS_ERR(opp_table)) 5b650b388844f2 drivers/base/power/opp/cpu.c Viresh Kumar 2017-01-23 213 return PTR_ERR(opp_table); 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 214 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 215 if (opp_table->shared_opp == OPP_TABLE_ACCESS_UNKNOWN) { 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 216 ret = -EINVAL; 5b650b388844f2 drivers/base/power/opp/cpu.c Viresh Kumar 2017-01-23 217 goto put_opp_table; 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 218 } 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 219 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 220 cpumask_clear(cpumask); 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 221 79ee2e8f730411 drivers/base/power/opp/cpu.c Viresh Kumar 2016-06-16 222 if (opp_table->shared_opp == OPP_TABLE_ACCESS_SHARED) { 3d2556992a878a drivers/opp/cpu.c Viresh Kumar 2018-08-03 223 mutex_lock(&opp_table->lock); 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 224 list_for_each_entry(opp_dev, &opp_table->dev_list, node) 6f707daa383376 drivers/base/power/opp/cpu.c Viresh Kumar 2016-04-27 225 cpumask_set_cpu(opp_dev->dev->id, cpumask); 3d2556992a878a drivers/opp/cpu.c Viresh Kumar 2018-08-03 @226 mutex_unlock(&opp_table->lock); :::::: The code at line 226 was first introduced by commit :::::: 3d2556992a878a2210d3be498416aee39e0c32aa OPP: Protect dev_list with opp_table lock :::::: TO: Viresh Kumar <viresh.kumar(a)linaro.org&gt; :::::: CC: Viresh Kumar <viresh.kumar(a)linaro.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org