[cxl:for-6.3/cxl-ram-region 23/25] ERROR: modpost: "walk_hmem_resources" [drivers/dax/hmem/dax_hmem.ko] undefined!

[cxl:for-6.3/cxl-ram-region 23/25] ERROR: modpost: "walk_hmem_resources" [drivers/dax/hmem/dax_hmem.ko] undefined!

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git for-6.3/cxl-ram-region
head:   14acf2db2613dad48f315647c022b15e7dd7b7bd
commit: 1404bbe617dc40d32c8f7b772bb17f9309a33a26 [23/25] dax/hmem: Move hmem device registration to dax_hmem.ko
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20230205/202302050349.g4NppVCy-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=1404bbe617dc40d32c8f7b772bb17f9309a33a26
        git remote add cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git
        git fetch --no-tags cxl for-6.3/cxl-ram-region
        git checkout 1404bbe617dc40d32c8f7b772bb17f9309a33a26
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "walk_hmem_resources" [drivers/dax/hmem/dax_hmem.ko] undefined!

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