tree: https://github.com/0day-ci/linux/commits/UPDATE-20210129-200034/Pavel-Mac... head: 1b18dd2095459b100b0ff1208b7efa6ddc4e2c9e commit: 1b18dd2095459b100b0ff1208b7efa6ddc4e2c9e ASoC: audio-graph-card: Add audio mixer for Motorola mdm6600 date: 13 days ago config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/1b18dd2095459b100b0ff1208b7efa6dd... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20210129-200034/Pavel-Machek/ASoC-cpcap-Implement-set_tdm_slot-for-voice-call-support/20210113-015024 git checkout 1b18dd2095459b100b0ff1208b7efa6ddc4e2c9e # save the attached .config to linux build tree make W=1 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 errors (new ones prefixed by >>): 18 | #include <linux/serdev-gsm.h> | ^~~~~~~~~~~~~~~~~~~~ compilation terminated. vim +18 sound/soc/codecs/motmdm-state.c 19 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org