[cxl:preview 47/49] powerpc-linux-ld: port.c:undefined reference to `cxl_region_type'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git preview
head:   b2d4fd5c97b59f622e6c45ac51020cdcd66bb022
commit: feed7426434db705269ed645f6380e4e2784a77d [47/49] cxl/region: Add region driver boiler plate
config: powerpc-randconfig-r031-20220622 (https://download.01.org/0day-ci/archive/20220623/202206231916.mejWiaAb-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 11.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=feed7426434db705269ed645f6380e4e2784a77d
        git remote add cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git
        git fetch --no-tags cxl preview
        git checkout feed7426434db705269ed645f6380e4e2784a77d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxl_root_decoder_visible':
   port.c:(.text+0xe2): undefined reference to `dev_attr_create_pmem_region'
   powerpc-linux-ld: port.c:(.text+0xe6): undefined reference to `dev_attr_create_pmem_region'
   powerpc-linux-ld: port.c:(.text+0xf6): undefined reference to `dev_attr_delete_region'
   powerpc-linux-ld: port.c:(.text+0xfa): undefined reference to `dev_attr_delete_region'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxld_unregister':
   port.c:(.text+0x8ea): undefined reference to `cxl_region_rwsem'
   powerpc-linux-ld: port.c:(.text+0x8f2): undefined reference to `cxl_region_rwsem'
   powerpc-linux-ld: port.c:(.text+0x90c): undefined reference to `cxl_region_detach'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxl_bus_uevent':
   port.c:(.text+0x9ca): undefined reference to `cxl_region_type'
>> powerpc-linux-ld: port.c:(.text+0x9d2): undefined reference to `cxl_region_type'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxl_core_exit':
   port.c:(.text+0xad0): undefined reference to `cxl_region_exit'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxl_bus_match':
   port.c:(.text+0x118a): undefined reference to `cxl_region_type'
   powerpc-linux-ld: port.c:(.text+0x1192): undefined reference to `cxl_region_type'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `modalias_show':
   port.c:(.text+0x128a): undefined reference to `cxl_region_type'
   powerpc-linux-ld: port.c:(.text+0x1292): undefined reference to `cxl_region_type'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `region_show':
   port.c:(.text+0x1d06): undefined reference to `cxl_region_rwsem'
   powerpc-linux-ld: port.c:(.text+0x1d0a): undefined reference to `cxl_region_rwsem'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxl_decoder_autoremove':
   port.c:(.text+0x3a4e): undefined reference to `cxl_region_rwsem'
   powerpc-linux-ld: port.c:(.text+0x3a52): undefined reference to `cxl_region_rwsem'
   powerpc-linux-ld: port.c:(.text+0x3a68): undefined reference to `cxl_region_detach'
   powerpc-linux-ld: drivers/cxl/core/port.o:(.data+0x130): undefined reference to `dev_attr_create_pmem_region'
   powerpc-linux-ld: drivers/cxl/core/port.o:(.data+0x134): undefined reference to `dev_attr_delete_region'
   powerpc-linux-ld: drivers/cxl/core/port.o: in function `cxl_core_init':
   port.c:(.init.text+0x78): undefined reference to `cxl_region_init'

-- 
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