diff --git a/[refs] b/[refs]
index 33bafe972fc3..f05342eb8b32 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0b21bb49187a863e3fc3c4f3356baf03578a9d1a
+refs/heads/master: 4c920de37d29284d4cb65d76a97a567247c2ac32
diff --git a/trunk/include/asm-powerpc/pgtable-ppc32.h b/trunk/include/asm-powerpc/pgtable-ppc32.h
index bdbab72f3ebc..6fe39e327047 100644
--- a/trunk/include/asm-powerpc/pgtable-ppc32.h
+++ b/trunk/include/asm-powerpc/pgtable-ppc32.h
@@ -401,6 +401,9 @@ extern int icache_44x_need_flush;
 #ifndef _PAGE_COHERENT
 #define _PAGE_COHERENT	0
 #endif
+#ifndef _PAGE_WRITETHRU
+#define _PAGE_WRITETHRU	0
+#endif
 #ifndef _PMD_PRESENT_MASK
 #define _PMD_PRESENT_MASK	_PMD_PRESENT
 #endif