linux-kernel - [PATCH] ARM: l2x0: Check the correct address range

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Message-id: <20101119014029.GA26429@july>
Date:	Fri, 19 Nov 2010 10:40:29 +0900
From:	Kyungmin Park <kmpark@...radead.org>
To:	linux-arm-kernel@...ts.infradead.org,
	Santosh Shilimkar <santosh.shilimkar@...com>
Cc:	Russell King <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Tony Lindgren <tony@...mide.com>
Subject: [PATCH] ARM: l2x0: Check the correct address range

From: Boojin Kim <boojin.kim@...sung.com>

When flush or clean the 1MiB, it doesn't flush or clean all since it doesn't check the correct address. So Check the correct address range.

Signed-off-by: Boojin Kim <boojin.kim@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 170c9bb..50599d9 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -195,7 +195,7 @@ static void l2x0_clean_range(unsigned long start, unsigned long end)
 	void __iomem *base = l2x0_base;
 	unsigned long flags;
 
-	if ((end - start) >= l2x0_size) {
+	if ((end - start + 1) >= l2x0_size) {
 		l2x0_clean_all();
 		return;
 	}
@@ -225,7 +225,7 @@ static void l2x0_flush_range(unsigned long start, unsigned long end)
 	void __iomem *base = l2x0_base;
 	unsigned long flags;
 
-	if ((end - start) >= l2x0_size) {
+	if ((end - start + 1) >= l2x0_size) {
 		l2x0_flush_all();
 		return;
 	}
--
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