ERROR: modpost: "drm_panel_init" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!

ERROR: modpost: "drm_panel_init" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!

[kernel test robot]

tree:   https://github.com/intel-lab-lkp/linux/commits/Val-Packett/drm-Introduce-drm_panel_prepare_for_mode-callback/20260412-203219
head:   a210eaa6cf90ed0bb6afe19395c080e50a1f71a7
commit: a210eaa6cf90ed0bb6afe19395c080e50a1f71a7 drm/panel: Add driver for Novatek NT37701 based OLED panels
date:   14 hours ago
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260413/202604130427.IBMIQMEP-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260413/202604130427.IBMIQMEP-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/202604130427.IBMIQMEP-lkp@intel.com/

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

>> ERROR: modpost: "drm_panel_init" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "drm_panel_add" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_attach" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "drm_panel_remove" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_detach" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_dcs_write_buffer_multi" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_dcs_set_display_brightness_multi" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_dcs_set_tear_on_multi" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_dcs_set_column_address_multi" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
>> ERROR: modpost: "mipi_dsi_dcs_set_page_address_multi" [drivers/gpu/drm/panel/panel-novatek-nt37701.ko] undefined!
WARNING: modpost: suppressed 12 unresolved symbol warnings because there were too many)

-- 
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https://github.com/intel/lkp-tests/wiki