Index: arch/mips32/include/types.h
===================================================================
--- arch/mips32/include/types.h	(revision 021d471663b9f267f1999923f91fc387f1943aca)
+++ arch/mips32/include/types.h	(revision 42744880a09efbd22a7e49822241bb65a91cd197)
@@ -52,3 +52,5 @@
 typedef union pte pte_t;
 
+typedef __u32 pfn_t;
+
 #endif