leds: leds-fsg: use devm_ioremap

The devm_ functions allocate memory that is released when a driver
detaches. This patch uses devm_ioremap() for these functions.

Signed-off-by: Jingoo Han <[e-mail]>
Signed-off-by: Bryan Wu <[e-mail]>

drivers/leds/leds-fsg.c

···
 #include <linux/platform_device.h>
 #include <linux/leds.h>
 #include <linux/module.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
-#include <asm/io.h>
 
 #define FSG_LED_WLAN_BIT	0
 #define FSG_LED_WAN_BIT		1
···
 	int ret;
 
 	/* Map the LED chip select address space */
-	latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);
-	if (!latch_address) {
-		ret = -ENOMEM;
-		goto failremap;
-	}
+	latch_address = (unsigned short *) devm_ioremap(&pdev->dev,
+						IXP4XX_EXP_BUS_BASE(2), 512);
+	if (!latch_address)
+		return -ENOMEM;
 
 	latch_value = 0xffff;
 	*latch_address = latch_value;
···
  failwan:
 	led_classdev_unregister(&fsg_wlan_led);
  failwlan:
-	iounmap(latch_address);
- failremap:
 
 	return ret;
 }
···
 	led_classdev_unregister(&fsg_usb_led);
 	led_classdev_unregister(&fsg_sync_led);
 	led_classdev_unregister(&fsg_ring_led);
-
-	iounmap(latch_address);
 
 	return 0;
 }