Re: [PATCH] HID: generic: add LampArray support via hid-lamparray helper

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

Hi Tim,

kernel test robot noticed the following build errors:

[auto build test ERROR on hid/for-next]
[also build test ERROR on linus/master v6.19 next-20260219]
[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/Tim-Guttzeit/HID-generic-add-LampArray-support-via-hid-lamparray-helper/20260219-211040
base:   https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git for-next
patch link:    https://lore.kernel.org/r/20260219130217.2042972-1-tgu%40tuxedocomputers.com
patch subject: [PATCH] HID: generic: add LampArray support via hid-lamparray helper
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260219/202602192025.xrvVo680-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260219/202602192025.xrvVo680-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/202602192025.xrvVo680-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: led_mc_calc_color_components
   >>> referenced by hid-lamparray.c:585 (drivers/hid/hid-lamparray.c:585)
   >>>               vmlinux.o:(lamparray_register_led)
   >>> referenced by hid-lamparray.c:449 (drivers/hid/hid-lamparray.c:449)
   >>>               vmlinux.o:(lamparray_led_brightness_set)
--
>> ld.lld: error: undefined symbol: led_classdev_multicolor_register_ext
   >>> referenced by led-class-multicolor.h:70 (include/linux/led-class-multicolor.h:70)
   >>>               vmlinux.o:(lamparray_register_led)
--
>> ld.lld: error: undefined symbol: led_classdev_multicolor_unregister
   >>> referenced by hid-lamparray.c:615 (drivers/hid/hid-lamparray.c:615)
   >>>               vmlinux.o:(lamparray_unregister_led)

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