From: Tony Lindgren <tony@atomide.com>
Date: Thu, 3 Nov 2005 00:18:23 +0000 (-0800)
Subject: ARM: OMAP: Fix consistent_sync()
X-Git-Tag: v2.6.15-omap2~115
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=a9a31cc4ef3830e31766f03f55daa4b43e1d6dac;p=linux-2.6-omap-h63xx.git

ARM: OMAP: Fix consistent_sync()

It looks like consistent_sync() is off by one on arm as the dmac
functions are being called with start and end instead of start and length.

Also posted to linux-arm-kernel mailing list:

http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2005-November/032037.html
---

diff --git a/arch/arm/mm/consistent.c b/arch/arm/mm/consistent.c
index 26356ce4da5..a1ed07d2b56 100644
--- a/arch/arm/mm/consistent.c
+++ b/arch/arm/mm/consistent.c
@@ -432,7 +432,7 @@ core_initcall(consistent_init);
 void consistent_sync(void *vaddr, size_t size, int direction)
 {
 	unsigned long start = (unsigned long)vaddr;
-	unsigned long end   = start + size;
+	unsigned long end   = start + size - 1;
 
 	switch (direction) {
 	case DMA_FROM_DEVICE:		/* invalidate only */