[PATCH v4 1/7] usb: typec: Add default HPD device when register DisplayPort altmode

[kernel test robot]

Hi Chaoyi,

kernel test robot noticed the following build errors:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on usb/usb-next usb/usb-linus robh/for-next linus/master v6.17-rc7 next-20250919]
[cannot apply to rockchip/for-next]
[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/Chaoyi-Chen/usb-typec-Add-default-HPD-device-when-register-DisplayPort-altmode/20250922-092549
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
patch link:    https://lore.kernel.org/r/20250922012039.323-2-kernel%40airkyi.com
patch subject: [PATCH v4 1/7] usb: typec: Add default HPD device when register DisplayPort altmode
config: arm-randconfig-001-20250922 (https://download.01.org/0day-ci/archive/20250922/202509221607.rWZ3wNqm-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project cafc064fc7a96b3979a023ddae1da2b499d6c954)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250922/202509221607.rWZ3wNqm-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509221607.rWZ3wNqm-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: dp_altmode_hpd_device_register
   >>> referenced by class.c:609 (drivers/usb/typec/class.c:609)
   >>>               drivers/usb/typec/class.o:(typec_register_altmode) in archive vmlinux.a

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