Hi Cezary, I love your patch! Perhaps something to improve: [auto build test WARNING on broonie-sound/for-next] [also build test WARNING on tiwai-sound/for-next v5.15-rc6 next-20211022] [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/Cezary-Rojewski/ASoC-Intel-Unify-HDAudio-ext-bus-initialization/20211019-032047 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next config: x86_64-randconfig-a012-20211022 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5dc339d9825f1dbe788cfb69c88210a59bbf8e3a) 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 # https://github.com/0day-ci/linux/commit/997e684694fcfc54bfef7a1c21e1788bc52a29af git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Cezary-Rojewski/ASoC-Intel-Unify-HDAudio-ext-bus-initialization/20211019-032047 git checkout 997e684694fcfc54bfef7a1c21e1788bc52a29af # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> sound/soc/intel/skylake/skl.c:864:19: warning: variable 'bus' set but not used [-Wunused-but-set-variable] struct hdac_bus *bus; ^ 1 warning generated. vim +/bus +864 sound/soc/intel/skylake/skl.c ab1b732d53c18f Vinod Koul 2017-05-04 855 d8c2dab8381d58 Jeeja KP 2015-07-09 856 /* d8c2dab8381d58 Jeeja KP 2015-07-09 857 * constructor d8c2dab8381d58 Jeeja KP 2015-07-09 858 */ d8c2dab8381d58 Jeeja KP 2015-07-09 859 static int skl_create(struct pci_dev *pci, bcc2a2dc3ba8c3 Cezary Rojewski 2019-07-23 860 struct skl_dev **rskl) d8c2dab8381d58 Jeeja KP 2015-07-09 861 { 6bae5ea9498926 Rakesh Ughreja 2018-08-22 862 struct hdac_ext_bus_ops *ext_ops = NULL; bcc2a2dc3ba8c3 Cezary Rojewski 2019-07-23 863 struct skl_dev *skl; 76f56fae1cf904 Rakesh Ughreja 2018-06-01 @864 struct hdac_bus *bus; 00deadb5d86a3c Rakesh Ughreja 2018-08-22 865 struct hda_bus *hbus; d8c2dab8381d58 Jeeja KP 2015-07-09 866 int err; d8c2dab8381d58 Jeeja KP 2015-07-09 867 d8c2dab8381d58 Jeeja KP 2015-07-09 868 *rskl = NULL; d8c2dab8381d58 Jeeja KP 2015-07-09 869 d8c2dab8381d58 Jeeja KP 2015-07-09 870 err = pci_enable_device(pci); d8c2dab8381d58 Jeeja KP 2015-07-09 871 if (err < 0) d8c2dab8381d58 Jeeja KP 2015-07-09 872 return err; d8c2dab8381d58 Jeeja KP 2015-07-09 873 d8c2dab8381d58 Jeeja KP 2015-07-09 874 skl = devm_kzalloc(&pci->dev, sizeof(*skl), GFP_KERNEL); d8c2dab8381d58 Jeeja KP 2015-07-09 875 if (!skl) { d8c2dab8381d58 Jeeja KP 2015-07-09 876 pci_disable_device(pci); d8c2dab8381d58 Jeeja KP 2015-07-09 877 return -ENOMEM; d8c2dab8381d58 Jeeja KP 2015-07-09 878 } 76f56fae1cf904 Rakesh Ughreja 2018-06-01 879 00deadb5d86a3c Rakesh Ughreja 2018-08-22 880 hbus = skl_to_hbus(skl); 76f56fae1cf904 Rakesh Ughreja 2018-06-01 881 bus = skl_to_bus(skl); 6bae5ea9498926 Rakesh Ughreja 2018-08-22 882 776cb3b80ede9e Amadeusz Sławiński 2019-06-17 883 INIT_LIST_HEAD(&skl->ppl_list); 776cb3b80ede9e Amadeusz Sławiński 2019-06-17 884 INIT_LIST_HEAD(&skl->bind_list); 776cb3b80ede9e Amadeusz Sławiński 2019-06-17 885 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org