ERROR: modpost: "drm_connector_hdmi_audio_plugged_notify" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!

[kernel test robot]

Hi Dmitry,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   780d569e6c4b422290f5cba319eb904b355d64be
commit: c08c123d4cd6ec3ee482d607e29388d0db2d3f1d drm/bridge: lontium-lt9611uxc: switch to HDMI audio helpers
date:   6 months ago
config: powerpc-randconfig-r063-20260628 (https://download.01.org/0day-ci/archive/20260628/202606280845.FVTkiTDA-lkp@xxxxxxxxx/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260628/202606280845.FVTkiTDA-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
| Fixes: c08c123d4cd6 ("drm/bridge: lontium-lt9611uxc: switch to HDMI audio helpers")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606280845.FVTkiTDA-lkp@xxxxxxxxx/

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

>> ERROR: modpost: "drm_connector_hdmi_audio_plugged_notify" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!

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