[linux-next:master 3093/3958] drivers/acpi/numa/hmat.c:658: undefined reference to `hmem_register_device'

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b36c969764ab12faebb74711c942fa3e6eaf1e96
commit: f7782cc946fea99b8a4a0a83b6c3775a6beff8ce [3093/3958] ACPI: HMAT: refactor hmat_register_target_device to hmem_register_device
config: arm64-randconfig-r016-20200831 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout f7782cc946fea99b8a4a0a83b6c3775a6beff8ce
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   aarch64-linux-ld: drivers/acpi/numa/hmat.o: in function `hmat_register_target_devices':
>> drivers/acpi/numa/hmat.c:658: undefined reference to `hmem_register_device'

# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f7782cc946fea99b8a4a0a83b6c3775a6beff8ce
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout f7782cc946fea99b8a4a0a83b6c3775a6beff8ce
vim +658 drivers/acpi/numa/hmat.c

   643	
   644	static void hmat_register_target_devices(struct memory_target *target)
   645	{
   646		struct resource *res;
   647	
   648		/*
   649		 * Do not bother creating devices if no driver is available to
   650		 * consume them.
   651		 */
   652		if (!IS_ENABLED(CONFIG_DEV_DAX_HMEM))
   653			return;
   654	
   655		for (res = target->memregions.child; res; res = res->sibling) {
   656			int target_nid = acpi_map_pxm_to_node(target->memory_pxm);
   657	
 > 658			hmem_register_device(target_nid, res);
   659		}
   660	}
   661	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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