ld.lld: error: undefined symbol: ptp_clock_register

[kernel test robot <lkp@intel.com>]

Hi Divya,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   88e6c0207623874922712e162e25d9dafd39661e
commit: ece19502834d84ece2e056db28257ca2aa6e4d48 net: phy: micrel: 1588 support for LAN8814 phy
date:   4 weeks ago
config: riscv-randconfig-r006-20220402 (https://download.01.org/0day-ci/archive/20220403/202204030755.3o6LEkHq-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c4a1b07d0979e7ff20d7d541af666d822d66b566)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ece19502834d84ece2e056db28257ca2aa6e4d48
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ece19502834d84ece2e056db28257ca2aa6e4d48
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: ptp_clock_register
   >>> referenced by micrel.c
   >>> net/phy/micrel.o:(lan8814_probe) in archive drivers/built-in.a
--
>> ld.lld: error: undefined symbol: ptp_clock_index
   >>> referenced by micrel.c
   >>> net/phy/micrel.o:(lan8814_ts_info) in archive drivers/built-in.a

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp