tree: https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git net-next-mlx5 head: 645c8116a15fb54da78658990992296831729f62 commit: 8664d49a815e34f8e88489efb72c23826167adbe [113/149] ptp_pch: Use ioread64_lo_hi() / iowrite64_lo_hi() config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20220210/202202101152.IvkySQrT-lk...) compiler: hppa-linux-gcc (GCC) 11.2.0 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/saeed/linux.git/commit/?i... git remote add saeed https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git git fetch --no-tags saeed net-next-mlx5 git checkout 8664d49a815e34f8e88489efb72c23826167adbe # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc 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 >>): hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `pch_rx_snap_read': hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `pch_tx_snap_read': (.text+0x3ec): undefined reference to `ioread64_lo_hi' hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `pch_set_station_address': hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `ptp_pch_settime': hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `ptp_pch_adjtime': hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `ptp_pch_gettime': ptp_pch.o:(.text+0xb10): undefined reference to `ioread64_lo_hi' hppa-linux-ld: drivers/ptp/ptp_pch.o: in function `pch_probe': ptp_pch.o:(.text+0xe88): undefined reference to `iowrite64_lo_hi' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org