ERROR: modpost: "__delay" [drivers/net/mdio/mdio-cavium.ko] undefined!

[kernel test robot]

Hi Masahiro,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1722389b0d863056d78287a120a1d6cadb8d4f7b
commit: f73edc8951b2de515b5ecc8a357ccd47dd41077e kbuild: unify two modpost invocations
date:   1 year, 10 months ago
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20240726/202407260828.NQM5BhqE-lkp@xxxxxxxxx/config)
compiler: sh4-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240726/202407260828.NQM5BhqE-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407260828.NQM5BhqE-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__delay" [drivers/net/mdio/mdio-cavium.ko] undefined!

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