From: Florian Zumbiehl <florz@florz.de>
Date: Wed, 11 Aug 2010 21:17:33 +0000 (-0700)
Subject: parisc: fix wrong page aligned size calculation in ioremapping code
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a292dfa01794477126d3f022559eb235edde00b0;p=openwrt%2Fstaging%2Fblogic.git

parisc: fix wrong page aligned size calculation in ioremapping code

parisc __ioremap(): fix off-by-one error in page alignment of allocation
size for sizes where size%PAGE_SIZE==1.

Signed-off-by: Florian Zumbiehl <florz@florz.de>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Acked-by: Helge Deller <deller@gmx.de>
Tested-by: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c
index 92d496ad07c9..838d0259cd27 100644
--- a/arch/parisc/mm/ioremap.c
+++ b/arch/parisc/mm/ioremap.c
@@ -71,7 +71,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 	 */
 	offset = phys_addr & ~PAGE_MASK;
 	phys_addr &= PAGE_MASK;
-	size = PAGE_ALIGN(last_addr) - phys_addr;
+	size = PAGE_ALIGN(last_addr + 1) - phys_addr;
 
 	/*
 	 * Ok, go for it..