drivers/edac/skx_edac.c:399: undefined reference to `nfit_get_smbios_id'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   427fbe89261d8f11cd20b5a4ba94e977061f69d6
commit: 58ca9ac1463d07d24b9fa8befe065192abca6f76 EDAC, skx_edac: Detect 
non-volatile DIMMs
date:   8 weeks ago
config: x86_64-randconfig-v0-05130337 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        git checkout 58ca9ac1463d07d24b9fa8befe065192abca6f76
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/edac/skx_edac.o: In function `get_nvdimm_info':
>> drivers/edac/skx_edac.c:399: undefined reference to `nfit_get_smbios_id'

vim +399 drivers/edac/skx_edac.c

   387  
   388  static int get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
   389                             int chan, int dimmno)
   390  {
   391          int smbios_handle;
   392          u32 dev_handle;
   393          u16 flags;
   394          u64 size = 0;
   395  
   396          dev_handle = ACPI_NFIT_BUILD_DEVICE_HANDLE(dimmno, chan, 
imc->lmc,
   397                                                     imc->src_id, 0);
   398  
 > 399          smbios_handle = nfit_get_smbios_id(dev_handle, &flags);
   400          if (smbios_handle == -EOPNOTSUPP) {
   401                  pr_warn_once(EDAC_MOD_STR ": Can't find size of NVDIMM. 
Try enabling CONFIG_ACPI_NFIT\n");
   402                  goto unknown_size;
   403          }
   404  
   405          if (smbios_handle < 0) {
   406                  skx_printk(KERN_ERR, "Can't find handle for NVDIMM 
ADR=%x\n", dev_handle);
   407                  goto unknown_size;
   408          }
   409  
   410          if (flags & ACPI_NFIT_MEM_MAP_FAILED) {
   411                  skx_printk(KERN_ERR, "NVDIMM ADR=%x is not mapped\n", 
dev_handle);
   412                  goto unknown_size;
   413          }
   414  
   415          size = dmi_memdev_size(smbios_handle);
   416          if (size == ~0ull)
   417                  skx_printk(KERN_ERR, "Can't find size for NVDIMM 
ADR=%x/SMBIOS=%x\n",
   418                             dev_handle, smbios_handle);
   419  
   420  unknown_size:
   421          dimm->nr_pages = size >> PAGE_SHIFT;
   422          dimm->grain = 32;
   423          dimm->dtype = DEV_UNKNOWN;
   424          dimm->mtype = MEM_NVDIMM;
   425          dimm->edac_mode = EDAC_SECDED; /* likely better than this */
   426  
   427          edac_dbg(0, "mc#%d: channel %d, dimm %d, %llu Mb (%u pages)\n",
   428                   imc->mc, chan, dimmno, size >> 20, dimm->nr_pages);
   429  
   430          snprintf(dimm->label, sizeof(dimm->label), 
"CPU_SrcID#%u_MC#%u_Chan#%u_DIMM#%u",
   431                   imc->src_id, imc->lmc, chan, dimmno);
   432  
   433          return (size == 0 || size == ~0ull) ? 0 : 1;
   434  }
   435  

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