Re: [PATCH v3 06/11] backlight: Replace fb events with a dedicated function call

[kernel test robot <lkp@intel.com>]

Hi Thomas,

kernel test robot noticed the following build errors:

[auto build test ERROR on lee-backlight/for-backlight-next]
[also build test ERROR on lee-leds/for-leds-next linus/master lee-backlight/for-backlight-fixes v6.14-rc5 next-20250307]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Thomas-Zimmermann/fbdev-Rework-fb_blank/20250306-221554
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight.git for-backlight-next
patch link:    https://lore.kernel.org/r/20250306140947.580324-7-tzimmermann%40suse.de
patch subject: [PATCH v3 06/11] backlight: Replace fb events with a dedicated function call
config: i386-randconfig-005-20250308 (https://download.01.org/0day-ci/archive/20250308/202503081907.HxPC1bKV-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/20250308/202503081907.HxPC1bKV-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/202503081907.HxPC1bKV-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: drivers/video/fbdev/core/fb_backlight.o: in function `fb_bl_notify_blank':
>> drivers/video/fbdev/core/fb_backlight.c:47: undefined reference to `backlight_notify_blank'
>> ld: drivers/video/fbdev/core/fb_backlight.c:49: undefined reference to `backlight_notify_blank_all'


vim +47 drivers/video/fbdev/core/fb_backlight.c

    40	
    41	void fb_bl_notify_blank(struct fb_info *info, int old_blank)
    42	{
    43		bool on = info->blank == FB_BLANK_UNBLANK;
    44		bool prev_on = old_blank == FB_BLANK_UNBLANK;
    45	
    46		if (info->bl_dev)
  > 47			backlight_notify_blank(info->bl_dev, info->device, on, prev_on);
    48		else
  > 49			backlight_notify_blank_all(info->device, on, prev_on);

-- 
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