diff --git a/arch/arm/mach-s3c24xx/mach-otom.c b/arch/arm/mach-s3c24xx/mach-otom.c
index 5f1e0eeb38a9..bc4b6efb3b27 100644
--- a/arch/arm/mach-s3c24xx/mach-otom.c
+++ b/arch/arm/mach-s3c24xx/mach-otom.c
@@ -77,11 +77,7 @@ static struct s3c2410_uartcfg otom11_uartcfgs[] __initdata = {
 /* NOR Flash on NexVision OTOM board */
 
 static struct resource otom_nor_resource[] = {
-	[0] = {
-		.start = S3C2410_CS0,
-		.end   = S3C2410_CS0 + (4*1024*1024) - 1,
-		.flags = IORESOURCE_MEM,
-	}
+	[0] = DEFINE_RES_MEM(S3C2410_CS0, SZ_4M),
 };
 
 static struct platform_device otom_device_nor = {