[wens:mtk-wip 31/52] drivers/gpu/drm/drm_mipi_dsi.c:1421:56: error: 'mipi_dsi_of_notifier' undeclared

[wens:mtk-wip 31/52] drivers/gpu/drm/drm_mipi_dsi.c:1421:56: error: 'mipi_dsi_of_notifier' undeclared

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/wens/linux.git mtk-wip
head:   17556f9c0c99f9bc7a5217b15d9ac204301317e8
commit: f1ca288bbc7fd436be87f32f0c7863489d92b982 [31/52] drm/mipi-dsi: Add OF notifier handler
config: i386-randconfig-004-20240225 (https://download.01.org/0day-ci/archive/20240225/202402252241.NfdO6aWr-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240225/202402252241.NfdO6aWr-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/202402252241.NfdO6aWr-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/x86/include/asm/bug.h:87,
                    from include/linux/bug.h:5,
                    from include/linux/jump_label.h:256,
                    from include/linux/static_key.h:1,
                    from arch/x86/include/asm/nospec-branch.h:6,
                    from arch/x86/include/asm/paravirt_types.h:12,
                    from arch/x86/include/asm/ptrace.h:175,
                    from arch/x86/include/asm/math_emu.h:5,
                    from arch/x86/include/asm/processor.h:13,
                    from include/linux/sched.h:13,
                    from include/linux/ratelimit.h:6,
                    from include/linux/dev_printk.h:16,
                    from include/linux/device.h:15,
                    from drivers/gpu/drm/drm_mipi_dsi.c:28:
   drivers/gpu/drm/drm_mipi_dsi.c: In function 'mipi_dsi_bus_init':
>> drivers/gpu/drm/drm_mipi_dsi.c:1421:56: error: 'mipi_dsi_of_notifier' undeclared (first use in this function)
    1421 |                 WARN_ON(of_reconfig_notifier_register(&mipi_dsi_of_notifier));
         |                                                        ^~~~~~~~~~~~~~~~~~~~
   include/asm-generic/bug.h:123:32: note: in definition of macro 'WARN_ON'
     123 |         int __ret_warn_on = !!(condition);                              \
         |                                ^~~~~~~~~
   drivers/gpu/drm/drm_mipi_dsi.c:1421:56: note: each undeclared identifier is reported only once for each function it appears in
    1421 |                 WARN_ON(of_reconfig_notifier_register(&mipi_dsi_of_notifier));
         |                                                        ^~~~~~~~~~~~~~~~~~~~
   include/asm-generic/bug.h:123:32: note: in definition of macro 'WARN_ON'
     123 |         int __ret_warn_on = !!(condition);                              \
         |                                ^~~~~~~~~


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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