Re: [PATCH v1] mfd: core: Support auxiliary device

[kernel test robot]

Hi Raag,

kernel test robot noticed the following build errors:

[auto build test ERROR on driver-core/driver-core-testing]
[also build test ERROR on driver-core/driver-core-next driver-core/driver-core-linus lee-mfd/for-mfd-next lee-leds/for-leds-next linus/master v6.14 next-20250403]
[cannot apply to lee-mfd/for-mfd-fixes]
[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/Raag-Jadav/mfd-core-Support-auxiliary-device/20250403-190322
base:   driver-core/driver-core-testing
patch link:    https://lore.kernel.org/r/20250403110053.1274521-1-raag.jadav%40intel.com
patch subject: [PATCH v1] mfd: core: Support auxiliary device
config: arm64-randconfig-003-20250403 (https://download.01.org/0day-ci/archive/20250404/202504040556.gg5BerTZ-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250404/202504040556.gg5BerTZ-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/202504040556.gg5BerTZ-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: auxiliary_device_init
   >>> referenced by mfd-core.c
   >>>               drivers/mfd/mfd-core.o:(mfd_add_devices) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: __auxiliary_device_add
   >>> referenced by mfd-core.c
   >>>               drivers/mfd/mfd-core.o:(mfd_add_devices) in archive vmlinux.a

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