tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7fef2edf7cc753b51f7ccc74993971b0a9c81eca commit: b90d9398d6ff6f518f352c39176450dbaf99e276 ASoC: codecs: wcd938x: remove incorrect module interdependency date: 4 weeks ago config: ia64-randconfig-c004-20210713 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 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://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 b90d9398d6ff6f518f352c39176450dbaf99e276 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash 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 >>): ia64-linux-ld: sound/soc/codecs/wcd938x.o: in function `wcd938x_codec_free': wcd938x.c:(.text+0x762): undefined reference to `wcd938x_sdw_free' ia64-linux-ld: sound/soc/codecs/wcd938x.o: in function `wcd938x_codec_hw_params': wcd938x.c:(.text+0x7f2): undefined reference to `wcd938x_sdw_hw_params' ia64-linux-ld: sound/soc/codecs/wcd938x.o: in function `wcd938x_codec_set_sdw_stream': wcd938x.c:(.text+0x882): undefined reference to `wcd938x_sdw_set_sdw_stream' ia64-linux-ld: sound/soc/codecs/wcd938x.o: in function `wcd938x_tx_swr_ctrl': wcd938x.c:(.text+0x2a32): undefined reference to `wcd938x_swr_get_current_bank' ia64-linux-ld: sound/soc/codecs/wcd938x.o: in function `wcd938x_bind': wcd938x.c:(.text+0x4ff2): undefined reference to `wcd938x_sdw_device_get' ia64-linux-ld: wcd938x.c:(.text+0x50b2): undefined reference to `wcd938x_sdw_device_get' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org