tree: https://github.com/intel/linux-intel-lts.git 5.10/KMB-yocto head: e00ba07ec4720ed356ee8a0ae9a1f53f754b7577 commit: da8a22c1d117dc7a34005542869efd709361b4d9 [8168/8457] xlink-core: Add Keem Bay XLink Core Module config: x86_64-randconfig-a005-20211209 (https://download.01.org/0day-ci/archive/20211210/202112100356.m4taPWDj-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/linux-intel-lts/commit/da8a22c1d117dc7a340055428... git remote add intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-lts 5.10/KMB-yocto git checkout da8a22c1d117dc7a34005542869efd709361b4d9 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 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 warnings (new ones prefixed by >>): In file included from <command-line>:32: 51 | void (*callback)(uint16_t); | ^~~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org