diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index 10311ecc674a4440511de0b4b27d0601d3718a45..38c3a6d63f301c0e7df0a73a96b6f49353847712 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -53,12 +53,13 @@
 
 /* port addresses for auto-detection */
 #define ALI_NUM_PORTS 4
-static int ports[ALI_NUM_PORTS] __initdata = {0x074, 0x0f4, 0x034, 0x0e4};
+static const int ports[ALI_NUM_PORTS] __initdata =
+	{ 0x074, 0x0f4, 0x034, 0x0e4 };
 
 /* register initialization data */
 typedef struct { u8 reg, data; } RegInitializer;
 
-static RegInitializer initData[] __initdata = {
+static const RegInitializer initData[] __initdata = {
 	{0x01, 0x0f}, {0x02, 0x00}, {0x03, 0x00}, {0x04, 0x00},
 	{0x05, 0x00}, {0x06, 0x00}, {0x07, 0x2b}, {0x0a, 0x0f},
 	{0x25, 0x00}, {0x26, 0x00}, {0x27, 0x00}, {0x28, 0x00},
@@ -177,7 +178,7 @@ static int __init findPort (void)
  * Initialize controller registers with default values.
  */
 static int __init initRegisters (void) {
-	RegInitializer *p;
+	const RegInitializer *p;
 	u8 t;
 	unsigned long flags;