ERROR: modpost: "clk_save_context" [drivers/net/phy/air_en8811h.ko] undefined!

[kernel test robot]

Hi Lucien.Jheng,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4ff71af020ae59ae2d83b174646fc2ad9fcd4dc4
commit: 6b9c9def95cb402374730d51a1f44927f467b774 net: phy: air_en8811h: Introduce resume/suspend and clk_restore_context to ensure correct CKO settings after network interface reinitialization.
date:   3 months ago
config: sh-randconfig-002-20250926 (https://download.01.org/0day-ci/archive/20250926/202509260628.qI8DFQp5-lkp@xxxxxxxxx/config)
compiler: sh4-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250926/202509260628.qI8DFQp5-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/202509260628.qI8DFQp5-lkp@xxxxxxxxx/

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

>> ERROR: modpost: "clk_save_context" [drivers/net/phy/air_en8811h.ko] undefined!
ERROR: modpost: "clk_restore_context" [drivers/net/phy/air_en8811h.ko] undefined!

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