diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h
index 73069cb..a7a06d1 100644
--- a/include/linux/raid/pq.h
+++ b/include/linux/raid/pq.h
@@ -72,6 +72,7 @@
 /* Routine choices */
 struct raid6_calls {
 	void (*gen_syndrome)(int, size_t, void **);
+	void (*xor_syndrome)(int, int, int, size_t, void **);
 	int  (*valid)(void);	/* Returns 1 if this routine set is usable */
 	const char *name;	/* Name of this routine set */
 	int prefer;		/* Has special performance attribute */