Hi Atish, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on driver-core/driver-core-testing] [also build test WARNING on linux/master linus/master v5.9-rc5 next-20200914] [cannot apply to arm64/for-next/core asm-generic/master] [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/Atish-Patra/Unify-NUMA-implement... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git 0de7511695680425aa1e6e1e1c7a7c24e6250491 config: arm64-randconfig-r032-20200913 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b2c32c90bab09a6e2c1f370429db26017a182143) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): int __init arch_acpi_numa_init(void) ^ drivers/base/arch_numa.c:463:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __init arch_acpi_numa_init(void) ^ static 1 warning generated. # https://github.com/0day-ci/linux/commit/6862a785b7ab5092f214251c211893cb9... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Atish-Patra/Unify-NUMA-implementation-between-ARM64-RISC-V/20200912-093951 git checkout 6862a785b7ab5092f214251c211893cb92aa9769 vim +/arch_acpi_numa_init +463 drivers/base/arch_numa.c 448 449 #ifdef CONFIG_ACPI_NUMA 450 int __init arch_acpi_numa_init(void) 451 { 452 int ret; 453 454 ret = acpi_numa_init(); 455 if (ret) { 456 pr_info("Failed to initialise from firmware\n"); 457 return ret; 458 } 459 460 return srat_disabled() ? -EINVAL : 0; 461 } 462 #else 464 { 465 return -EOPNOTSUPP; 466 } 467 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org