rt2x00: Use ioremap for SoC devices instead of KSEG1ADDR.

Make the code a bit more portable to architectures that do not support
KSEG1ADDR.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Tested-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800pci.c

@@ -87,9 +87,11 @@ static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
 #if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
 static void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
 {
-	u32 *base_addr = (u32 *) KSEG1ADDR(0x1F040000); /* XXX for RT3052 */
+	void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
 
 	memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
+
+	iounmap(base_addr);
 }
 #else
 static inline void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)

drivers/net/wireless/rt2x00/rt2x00soc.c

@@ -40,6 +40,8 @@ static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
 
 	kfree(rt2x00dev->eeprom);
 	rt2x00dev->eeprom = NULL;
+
+	iounmap(rt2x00dev->csr.base);
 }
 
 static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
@@ -51,9 +53,9 @@ static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
 	if (!res)
 		return -ENODEV;
 
-	rt2x00dev->csr.base = (void __iomem *)KSEG1ADDR(res->start);
+	rt2x00dev->csr.base = ioremap(res->start, resource_size(res));
 	if (!rt2x00dev->csr.base)
-		goto exit;
+		return -ENOMEM;
 
 	rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
 	if (!rt2x00dev->eeprom)