From ea6e5155ef903c6353d8f317dd73b3838658c971 Mon Sep 17 00:00:00 2001
From: qiuyiuestc <qiuyiuestc@gmail.com>
Date: Sun, 30 May 2010 09:56:19 +0000
Subject: [PATCH] fix running fail problem using armcc O2 opinion

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@751 bbd45198-f89e-11dd-88c7-29a3b14d5316
---
 libcpu/arm/s3c24x0/serial.h | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/libcpu/arm/s3c24x0/serial.h b/libcpu/arm/s3c24x0/serial.h
index 2869e56670..1015f2a935 100644
--- a/libcpu/arm/s3c24x0/serial.h
+++ b/libcpu/arm/s3c24x0/serial.h
@@ -27,17 +27,17 @@ struct serial_int_tx
 
 typedef struct uartport
 {
-	rt_uint32_t ulcon;
-	rt_uint32_t ucon;
-	rt_uint32_t ufcon;
-	rt_uint32_t umcon;
-	rt_uint32_t ustat;
-	rt_uint32_t urxb;
-	rt_uint32_t ufstat;
-	rt_uint32_t umstat;
-	rt_uint32_t utxh;	
-	rt_uint32_t urxh;	
-	rt_uint32_t ubrd;
+	volatile rt_uint32_t ulcon;
+	volatile rt_uint32_t ucon;
+	volatile rt_uint32_t ufcon;
+	volatile rt_uint32_t umcon;
+	volatile rt_uint32_t ustat;
+	volatile rt_uint32_t urxb;
+	volatile rt_uint32_t ufstat;
+	volatile rt_uint32_t umstat;
+	volatile rt_uint32_t utxh;	
+	volatile rt_uint32_t urxh;	
+	volatile rt_uint32_t ubrd;
 }uartport;
 
 struct serial_device
-- 
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