tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 3c00e94c0b2ebe3b80f062ab0a4938789e4df7a8 commit: 3c00e94c0b2ebe3b80f062ab0a4938789e4df7a8 [2/2] CHROMIUM: PCI: Allowlist for drivers allowed to bind to untrusted devices config: x86_64-randconfig-a004-20200911 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0448d11a06b451a63a8f60408fec613ad24801ba) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 3c00e94c0b2ebe3b80f062ab0a4938789e4df7a8 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): bool pci_drv_allowed_for_untrusted_devs(struct device_driver *drv) ^ drivers/pci/drvr-allowlist.c:130:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool pci_drv_allowed_for_untrusted_devs(struct device_driver *drv) ^ static 1 warning generated. git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout 3c00e94c0b2ebe3b80f062ab0a4938789e4df7a8 vim +/pci_drv_allowed_for_untrusted_devs +130 drivers/pci/drvr-allowlist.c 129 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org