[cxl:for-6.3/cxl-ram-region 17/17] ld.lld: error: undefined symbol: cxl_add_to_region

[cxl:for-6.3/cxl-ram-region 17/17] ld.lld: error: undefined symbol: cxl_add_to_region

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git for-6.3/cxl-ram-region
head:   f71922e583ef6b6e17575c87e496b17f91193d37
commit: f71922e583ef6b6e17575c87e496b17f91193d37 [17/17] cxl/region: Add region autodiscovery
config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20230131/202301311303.f3BvWCnS-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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=f71922e583ef6b6e17575c87e496b17f91193d37
        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 f71922e583ef6b6e17575c87e496b17f91193d37
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 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 >>):

>> ld.lld: error: undefined symbol: cxl_add_to_region
   >>> referenced by port.c:45 (drivers/cxl/port.c:45)
   >>>               drivers/cxl/port.o:(discover_region) in archive vmlinux.a

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