tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7d9c6b8147bdd76d7eb2cf6f74f84c6918ae0939 commit: 67569a7f940130fcfe9041e07a614a5263a9944d [8336/10875] ice: report the PTP clock index in ethtool .get_ts_info config: powerpc64-randconfig-c004-20210617 (attached as .config) compiler: powerpc-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/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 67569a7f940130fcfe9041e07a614a5263a9944d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc64 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 >>): powerpc-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_rebuild': ice_main.c:(.text.ice_rebuild+0x424): undefined reference to `ice_ptp_init' powerpc-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_prepare_for_reset': ice_main.c:(.text.ice_prepare_for_reset+0x1e8): undefined reference to `ice_ptp_release' powerpc-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_remove': ice_main.c:(.text.ice_remove+0x338): undefined reference to `ice_ptp_release' powerpc-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_probe': ice_main.c:(.text.ice_probe+0x13b8): undefined reference to `ice_ptp_init' powerpc-linux-ld: drivers/net/ethernet/intel/ice/ice_ethtool.o: in function `ice_get_ts_info': --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org