linux-kernel - [PATCH] Change the internal SRAM memory type MT_MEMORY

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Message-ID: <1370657863-8725-1-git-send-email-wenyou.yang@atmel.com>
Date:	Sat, 8 Jun 2013 10:17:43 +0800
From:	Wenyou Yang <wenyou.yang@...el.com>
To:	<linux-arm-kernel@...ts.infradead.org>
CC:	<linux@....linux.org.uk>, <linux@...im.org.za>,
	<nicolas.ferre@...el.com>, <plagnioj@...osoft.com>,
	<linux-kernel@...r.kernel.org>, <wenyou.yang@...el.com>
Subject: [PATCH] Change the internal SRAM memory type MT_MEMORY_NONCACHED

Because MT_DEVICE is not executable in armv7, we change
the internal SRAM memory type to MT_MEMORY_NONCACHED.
As it seems that caching this internal SRAM memory is not necessary,
we chose the this memory type.

Signed-off-by: Wenyou Yang <wenyou.yang@...el.com>
---
 arch/arm/mach-at91/setup.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index a33d4b5..98d55ef 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -84,7 +84,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
 
 	desc->pfn = __phys_to_pfn(base);
 	desc->length = length;
-	desc->type = MT_DEVICE;
+	desc->type = MT_MEMORY_NONCACHED;
 
 	pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
 		base, length, desc->virtual);
-- 
1.7.9.5

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