diff --git a/drivers/ieee1394/ohci1394.h b/drivers/ieee1394/ohci1394.h
index d1758d4..cc66c1c 100644
--- a/drivers/ieee1394/ohci1394.h
+++ b/drivers/ieee1394/ohci1394.h
@@ -236,6 +236,9 @@
 
 static inline int cross_bound(unsigned long addr, unsigned int size)
 {
+	if (size == 0)
+		return 0;
+
 	if (size > PAGE_SIZE)
 		return 1;