[kbuild-all] sound/soc/samsung/spdif.c:95:2: warning: unused function 'component_to_info'

Hi Arnd, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a763d5a5abd65797aec3dd1bf01fe2ccbec32967 commit: 35f752be4f412a1a58f4c15fa9282c53b956e067 mips: ralink: convert to CONFIG_COMMON_CLK date: 6 months ago config: mips-randconfig-r026-20211211 (https://download.01.org/0day-ci/archive/20211212/202112121823.rMdVwjAL-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 35f752be4f412a1a58f4c15fa9282c53b956e067 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs// mm// sound/soc/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): snd_soc_component ^ fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif' clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 14.0.0 (git://gitmirror/llvm_project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) Target: mipsel-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-097a1cb1d5/bin clang-14: note: diagnostic msg: Makefile arch block certs crypto drivers fs include init ipc kernel lib mm nr_bisected scripts security sound source usr virt vim +/component_to_info +95 sound/soc/samsung/spdif.c fc127ccccc5de1 sound/soc/s3c24xx/spdif.c Seungwhan Youn 2010-10-12 93 79a5cf90f8719c sound/soc/samsung/spdif.c Kuninori Morimoto 2020-01-20 94 static inline struct samsung_spdif_info 79a5cf90f8719c sound/soc/samsung/spdif.c Kuninori Morimoto 2020-01-20 @95 *component_to_info(struct snd_soc_component *component) 79a5cf90f8719c sound/soc/samsung/spdif.c Kuninori Morimoto 2020-01-20 96 { 79a5cf90f8719c sound/soc/samsung/spdif.c Kuninori Morimoto 2020-01-20 97 return snd_soc_component_get_drvdata(component); 79a5cf90f8719c sound/soc/samsung/spdif.c Kuninori Morimoto 2020-01-20 98 } 79a5cf90f8719c sound/soc/samsung/spdif.c Kuninori Morimoto 2020-01-20 99 :::::: The code at line 95 was first introduced by commit :::::: 79a5cf90f8719c3f69a0dc53efebb38da654512f ASoC: samsung: spdif: move .suspend/.resume to component :::::: TO: Kuninori Morimoto <kuninori.morimoto.gx(a)renesas.com&gt; :::::: CC: Mark Brown <broonie(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org