Hi Chetankumar, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on rafael-pm/thermal] [also build test ERROR on linux/master linus/master v5.16-rc4] [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] url: https://github.com/0day-ci/linux/commits/Chetankumar-Mistry/Implement-Zie... base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git thermal config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20211212/202112120159.DJxXDBRN-lk...) compiler: mips-linux-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/91f16d6a958fcd818cd8649e7d8d92958... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chetankumar-Mistry/Implement-Ziegler-Nichols-Heuristic/20211211-003430 git checkout 91f16d6a958fcd818cd8649e7d8d92958ada8c2f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): mips-linux-ld: drivers/thermal/gov_power_allocator.o: in function `ziegler_nichols': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org