[superm1:superm1/backlight-property-v10 16/16] ld.lld: error: undefined symbol: devm_backlight_device_register

[superm1:superm1/backlight-property-v10 16/16] ld.lld: error: undefined symbol: devm_backlight_device_register

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git superm1/backlight-property-v10
head:   1c0ba049e8d6177bdc78a5c0f53656d747c0eb6a
commit: badf7e43956b19ce60ad755613daf91db658270d [16/16] drm/solomon: add SSD130x connector luminance support
config: hexagon-randconfig-r2303-20261102 (https://download.01.org/0day-ci/archive/20261102/202611021030.sdgrqZco-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 3e5b45eed6c3ec25f4f1cc81ce0be10106a8f31f)
sparse: v0.6.5-rc1-21-g84ec0658
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261102/202611021030.sdgrqZco-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/202611021030.sdgrqZco-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: devm_backlight_device_register
   >>> referenced by ssd130x.c:2315 (drivers/gpu/drm/solomon/ssd130x.c:2315)
   >>>               drivers/gpu/drm/solomon/ssd130x.o:(ssd130x_probe) in archive vmlinux.a
   >>> referenced by ssd130x.c:2315 (drivers/gpu/drm/solomon/ssd130x.c:2315)
   >>>               drivers/gpu/drm/solomon/ssd130x.o:(ssd130x_probe) in archive vmlinux.a

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki