Hi Florian, kernel test robot noticed the following build errors: [auto build test ERROR on drm-misc/drm-misc-next] [also build test ERROR on drm-tip/drm-tip linus/master v6.9-rc6 next-20240503] [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/Florian-Fainelli/fbdev-Have-CONFIG_FB_NOTIFY-be-tristate/20240504-033139 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20240503192858.103640-1-florian.fainelli%40broadcom.com patch subject: [PATCH] fbdev: Have CONFIG_FB_NOTIFY be tristate config: powerpc-randconfig-001-20240504 (https://download.01.org/0day-ci/archive/20240504/202405041939.MNsieCv5-lkp@xxxxxxxxx/config) compiler: powerpc-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240504/202405041939.MNsieCv5-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 | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202405041939.MNsieCv5-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): powerpc-linux-ld: drivers/leds/trigger/ledtrig-backlight.o: in function `bl_trig_deactivate': >> ledtrig-backlight.c:(.text+0x360): undefined reference to `fb_unregister_client' powerpc-linux-ld: drivers/leds/trigger/ledtrig-backlight.o: in function `bl_trig_activate': >> ledtrig-backlight.c:(.text+0x3e8): undefined reference to `fb_register_client' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
