[PATCH] ieee1394: fix cross_bound check for null ISO packets
Fix cross_bound to not return 1 for zero-length regions. Fixes regression
when sending null ISO packets.
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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;