[frank-w-bpi-r2-4.14:7.1-rc 167/167] ld.lld: error: undefined symbol: phylink_release_pcs

[frank-w-bpi-r2-4.14:7.1-rc 167/167] ld.lld: error: undefined symbol: phylink_release_pcs

[kernel test robot]

tree:   https://github.com/frank-w/BPI-R2-4.14 7.1-rc
head:   866eb49750d39fe938dca71acece6f1540bb1123
commit: 94c584377495cc10276b1eab98802d2ba437099b [167/167] net: pcs: airoha: add PCS driver for Airoha SoC
config: i386-randconfig-r131-20260702 (https://download.01.org/0day-ci/archive/20260703/202607032026.JsIzIfbs-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260703/202607032026.JsIzIfbs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607032026.JsIzIfbs-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: phylink_release_pcs
   >>> referenced by pcs-airoha.c:2889 (drivers/net/pcs/pcs-airoha.c:2889)
   >>>               drivers/net/pcs/pcs-airoha.o:(airoha_pcs_remove) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: phylink_mii_c22_pcs_decode_state
   >>> referenced by pcs-airoha.c:2314 (drivers/net/pcs/pcs-airoha.c:2314)
   >>>               drivers/net/pcs/pcs-airoha.o:(airoha_pcs_get_state) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: phylink_decode_usxgmii_word
   >>> referenced by pcs-airoha.c:2333 (drivers/net/pcs/pcs-airoha.c:2333)
   >>>               drivers/net/pcs/pcs-airoha.o:(airoha_pcs_get_state) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: phylink_mii_c22_pcs_encode_advertisement
   >>> referenced by pcs-airoha.c:2485 (drivers/net/pcs/pcs-airoha.c:2485)
   >>>               drivers/net/pcs/pcs-airoha.o:(airoha_pcs_config) in archive vmlinux.a

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for FWNODE_PCS
   Depends on [m]: NETDEVICES [=y] && (ACPI [=y] || OF [=y]) && PHYLINK [=m]
   Selected by [y]:
   - PCS_AIROHA [=y] && NETDEVICES [=y]

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki