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-rw-r--r--include/linux/mmzone.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 95f4a780ea6..6ef07de98d6 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -435,6 +435,10 @@ extern struct pglist_data contig_page_data;
#endif
+#ifndef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
+#define early_pfn_to_nid(nid) (0UL)
+#endif
+
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _LINUX_MMZONE_H */