tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 9d9ef6a239aec91ca0e976f6c2565947f1b13a81 commit: 627e29e02b258a5a31215cc0659d5545979d3466 [33/43] CHROMIUM: drivers: bluetooth: set up Realtek 8822CE for Android BQR commands config: riscv-randconfig-r012-20210908 (attached as .config) compiler: riscv64-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 git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout 627e29e02b258a5a31215cc0659d5545979d3466 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv 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 >>): riscv64-linux-ld: drivers/bluetooth/hci_qca.o: in function `.L429': hci_qca.c:(.text+0x2c38): undefined reference to `btandroid_set_quality_report' riscv64-linux-ld: hci_qca.c:(.text+0x2c40): undefined reference to `btandroid_set_quality_report' riscv64-linux-ld: drivers/bluetooth/btrtl.o: in function `btrtl_set_quirks': riscv64-linux-ld: drivers/bluetooth/btrtl.o: in function `btrtl_setup_realtek': btrtl.c:(.text+0xe94): undefined reference to `btandroid_set_quality_report' riscv64-linux-ld: drivers/bluetooth/btrtl.o:btrtl.c:(.text+0xe98): more undefined references to `btandroid_set_quality_report' follow --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org