Hi Cezary, Thank you for the patch! Yet something to improve: [auto build test ERROR on broonie-sound/for-next] [also build test ERROR on tiwai-sound/for-next v5.15-rc5 next-20211015] [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/ALSA-hda-New-NHL... base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next config: riscv-randconfig-r042-20211016 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6069a6a5049497a32a50a49661c2f4169078bdba) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/2d319eabf52e504c98ef5c0fdd812347b... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Cezary-Rojewski/ALSA-hda-New-NHLT-functions-and-cleanup/20211016-004154 git checkout 2d319eabf52e504c98ef5c0fdd812347b41edd00 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash sound/hda/ 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 sound/hda/intel-dsp-config.c:13: include/sound/intel-nhlt.h:159:6: warning: no previous prototype for function 'intel_nhlt_has_endpoint_type' [-Wmissing-prototypes] bool intel_nhlt_has_endpoint_type(struct acpi_table_nhlt *nhlt, u8 link_type) ^ include/sound/intel-nhlt.h:159:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool intel_nhlt_has_endpoint_type(struct acpi_table_nhlt *nhlt, u8 link_type) ^ static include/sound/intel-nhlt.h:165:1: warning: no previous prototype for function 'intel_nhlt_get_endpoint_blob' [-Wmissing-prototypes] intel_nhlt_get_endpoint_blob(struct acpi_table_nhlt *nhlt, ^ include/sound/intel-nhlt.h:164:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct nhlt_specific_cfg * ^ static if (intel_nhlt_has_endpoint_type(nhlt, NHLT_LINK_DMIC)) ^ 2 warnings and 3 errors generated. vim +/NHLT_LINK_DMIC +387 sound/hda/intel-dsp-config.c 379 380 static int snd_intel_dsp_check_dmic(struct pci_dev *pci) 381 { 382 struct acpi_table_nhlt *nhlt; 383 int ret = 0; 384 385 nhlt = intel_nhlt_init(); 386 if (nhlt) { 388 ret = 1; 389 intel_nhlt_free(nhlt); 390 } 391 return ret; 392 } 393 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org