tree: https://android.googlesource.com/kernel/common android-4.19-stable head: 1fd210f0a5e003903f384cd16106bd2414b1b287 commit: 75fe91933be2dd4b884ca83bd72e1e0f0d05cfc6 [1/4] ANDROID: ASoC: core: add locked version of soc_find_component config: x86_64-randconfig-a002-20210120 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 22b68440e1647e16b5ee24b924986207173c02d1) 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 git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android-4.19-stable git checkout 75fe91933be2dd4b884ca83bd72e1e0f0d05cfc6 # 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 >>): struct snd_soc_component *soc_find_component_locked( ^ sound/soc/soc-core.c:761:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct snd_soc_component *soc_find_component_locked( ^ static sound/soc/soc-core.c:69:27: warning: unused variable 'dmi_blacklist' [-Wunused-const-variable] static const char * const dmi_blacklist[] = { ^ 2 warnings generated. sound/soc/soc-core.c:2971: warning: Excess function parameter 'legacy_dai_naming' description in 'snd_soc_register_dais' sound/soc/soc-core.c:3333: warning: Function parameter or member 'online' not described in 'snd_soc_card_change_online_state' vim +/soc_find_component_locked +761 sound/soc/soc-core.c 750 751 /** 752 * soc_find_component_locked: soc_find_component with client lock acquired 753 * 754 * @of_node: of_node of the component to query. 755 * @name: name of the component to query. 756 * 757 * function to find out if a component is already registered with ASoC core. 758 * 759 * Returns component handle for success, else NULL error. 760 */ 762 const struct device_node *of_node, const char *name) 763 { 764 struct snd_soc_component *component = NULL; 765 766 mutex_lock(&client_mutex); 767 component = soc_find_component(of_node, name); 768 mutex_unlock(&client_mutex); 769 return component; 770 } 771 EXPORT_SYMBOL(soc_find_component_locked); 772 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org