[wens:mtk-wip 52/54] drivers/gpu/drm/drm_mipi_dsi.c:1421:42: error: use of undeclared identifier 'mipi_dsi_of_notifier'

[wens:mtk-wip 52/54] drivers/gpu/drm/drm_mipi_dsi.c:1421:42: error: use of undeclared identifier 'mipi_dsi_of_notifier'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/wens/linux.git mtk-wip
head:   6a64fb8a7a10a804baffc30e4a05d56bf6d8ab91
commit: 1d5d5d0fe3f1402cf026845df7bbe19d70a47071 [52/54] drm/mipi-dsi: Add OF notifier handler
config: i386-randconfig-001-20240120 (https://download.01.org/0day-ci/archive/20240121/202401210400.XksXjSht-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240121/202401210400.XksXjSht-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/202401210400.XksXjSht-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/drm_mipi_dsi.c:1421:42: error: use of undeclared identifier 'mipi_dsi_of_notifier'
    1421 |                 WARN_ON(of_reconfig_notifier_register(&mipi_dsi_of_notifier));
         |                                                        ^
   1 error generated.


vim +/mipi_dsi_of_notifier +1421 drivers/gpu/drm/drm_mipi_dsi.c

  1417	
  1418	static int __init mipi_dsi_bus_init(void)
  1419	{
  1420		if (IS_ENABLED(CONFIG_OF_DYNAMIC))
> 1421			WARN_ON(of_reconfig_notifier_register(&mipi_dsi_of_notifier));
  1422		return bus_register(&mipi_dsi_bus_type);
  1423	}
  1424	postcore_initcall(mipi_dsi_bus_init);
  1425	

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