Hi Dmitry, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bluetooth-next/master] [also build test WARNING on next-20210621] [cannot apply to bluetooth/master regulator/for-next v5.13-rc7] [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/Dmitry-Baryshkov/Add-support-for... base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: x86_64-randconfig-a002-20210622 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project b3634d3e88b7f26534a5057bff182b7dced584fc) 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 # https://github.com/0day-ci/linux/commit/7a46fc12b366a2ea83bf92e4889214715... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dmitry-Baryshkov/Add-support-for-Qualcomm-QCA639x-chips-family/20210622-063340 git checkout 7a46fc12b366a2ea83bf92e48892147159c202ed # 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 >>): drivers/bluetooth/hci_qca.c:1821:37: warning: unused variable 'qca_soc_data_wcn3990' [-Wunused-const-variable] static const struct qca_device_data qca_soc_data_wcn3990 = { ^ drivers/bluetooth/hci_qca.c:1832:37: warning: unused variable 'qca_soc_data_wcn3991' [-Wunused-const-variable] static const struct qca_device_data qca_soc_data_wcn3991 = { ^ drivers/bluetooth/hci_qca.c:1844:37: warning: unused variable 'qca_soc_data_wcn3998' [-Wunused-const-variable] static const struct qca_device_data qca_soc_data_wcn3998 = { ^ drivers/bluetooth/hci_qca.c:1860:37: warning: unused variable 'qca_soc_data_wcn6750' [-Wunused-const-variable] static const struct qca_device_data qca_soc_data_wcn6750 = { ^ static const struct qca_device_data qca_soc_data_default = { ^ 5 warnings generated. vim +/qca_soc_data_default +1877 drivers/bluetooth/hci_qca.c 1876 1878 .soc_type = QCA_ROME, 1879 .num_vregs = 0, 1880 }; 1881 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org