tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 40374c21eea1f92c0033601858d56a4d7db79695 commit: 4f13e8fd6a0b8ca53f1c8cd467d2b9056f519238 [19734/20364] BACKPORT: FROMLIST: Bluetooth: hci_h5: Add driver capabilities for RTL8822CS config: powerpc-randconfig-r015-20201116 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ace9653c11c6308401dcda2e8b26bf97e6e66e30) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout 4f13e8fd6a0b8ca53f1c8cd467d2b9056f519238 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 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 >>): static const struct h5_device_data h5_data_rtl8723bs = { ^ 1 warning generated. vim +/h5_data_rtl8723bs +1027 drivers/bluetooth/hci_h5.c 1026 1028 .vnd = &rtl_vnd, 1029 }; 1030 #endif 1031 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org