Re: [RFC PATCH 1/1] xe/xe_mctp_mailbox: Add support for MCTP transport over mailbox

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

Hi Badal,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on drm-xe/drm-xe-next]
[also build test ERROR on drm-misc/drm-misc-next drm-tip/drm-tip linus/master v7.1-rc3 next-20260508]
[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/Badal-Nilawar/xe-xe_mctp_mailbox-Add-support-for-MCTP-transport-over-mailbox/20260512-014830
base:   https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next
patch link:    https://lore.kernel.org/r/20260504193420.1232842-4-badal.nilawar%40intel.com
patch subject: [RFC PATCH 1/1] xe/xe_mctp_mailbox: Add support for MCTP transport over mailbox
config: powerpc64-randconfig-001-20260512 (https://download.01.org/0day-ci/archive/20260512/202605121643.X4yOe0ng-lkp@intel.com/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/20260512/202605121643.X4yOe0ng-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/202605121643.X4yOe0ng-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: mctp_register_netdev
   >>> referenced by xe_mctp_mailbox.c:166 (drivers/gpu/drm/xe/xe_mctp_mailbox.c:166)
   >>>               drivers/gpu/drm/xe/xe_mctp_mailbox.o:(xe_mctp_mailbox_init) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: mctp_unregister_netdev
   >>> referenced by xe_mctp_mailbox.c:147 (drivers/gpu/drm/xe/xe_mctp_mailbox.c:147)
   >>>               drivers/gpu/drm/xe/xe_mctp_mailbox.o:(xe_mctp_mailbox_init) in archive vmlinux.a
   >>> referenced by xe_mctp_mailbox.c:175 (drivers/gpu/drm/xe/xe_mctp_mailbox.c:175)
   >>>               drivers/gpu/drm/xe/xe_mctp_mailbox.o:(xe_mctp_mailbox_init) in archive vmlinux.a
   >>> referenced by xe_mctp_mailbox.c:147 (drivers/gpu/drm/xe/xe_mctp_mailbox.c:147)
   >>>               drivers/gpu/drm/xe/xe_mctp_mailbox.o:(xe_mctp_mailbox_fini) in archive vmlinux.a

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