tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: e49b215c996cd58949812f549dd65b0f6c7706bf commit: e49b215c996cd58949812f549dd65b0f6c7706bf [9999/9999] CHROMIUM: Bluetooth: surface Intel telemetry events through mgmt config: arm-defconfig (https://download.01.org/0day-ci/archive/20220113/202201131601.dqen3I3F-lk...) compiler: arm-linux-gnueabi-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 git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout e49b215c996cd58949812f549dd65b0f6c7706bf # 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=arm SHELL=/bin/bash drivers/ 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 >>): In file included from drivers/bluetooth/hci_ldisc.c:34: 324 | { | ^ drivers/bluetooth/btintel.h:323:20: warning: 'btintel_pull_quality_report_data' declared 'static' but never defined [-Wunused-function] 323 | static inline bool btintel_pull_quality_report_data(struct sk_buff *skb); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +324 drivers/bluetooth/btintel.h 322 323 static inline bool btintel_pull_quality_report_data(struct sk_buff *skb); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org