backlight: max8925_bl: use devm_backlight_device_register()

Use devm_backlight_device_register() to make cleanup paths simpler, and
remove unnecessary remove().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/backlight/max8925_bl.c

@@ -163,7 +163,8 @@ static int max8925_backlight_probe(struct platform_device *pdev)
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_RAW;
 	props.max_brightness = MAX_BRIGHTNESS;
-	bl = backlight_device_register("max8925-backlight", &pdev->dev, data,
+	bl = devm_backlight_device_register(&pdev->dev, "max8925-backlight",
+					&pdev->dev, data,
 					&max8925_backlight_ops, &props);
 	if (IS_ERR(bl)) {
 		dev_err(&pdev->dev, "failed to register backlight\n");
@@ -188,20 +189,9 @@ static int max8925_backlight_probe(struct platform_device *pdev)
 	}
 	ret = max8925_set_bits(chip->i2c, data->reg_mode_cntl, 0xfe, value);
 	if (ret < 0)
-		goto out_brt;
+		return ret;
 	backlight_update_status(bl);
 	return 0;
-out_brt:
-	backlight_device_unregister(bl);
-	return ret;
-}
-
-static int max8925_backlight_remove(struct platform_device *pdev)
-{
-	struct backlight_device *bl = platform_get_drvdata(pdev);
-
-	backlight_device_unregister(bl);
-	return 0;
 }
 
 static struct platform_driver max8925_backlight_driver = {
@@ -210,7 +200,6 @@ static struct platform_driver max8925_backlight_driver = {
 		.owner	= THIS_MODULE,
 	},
 	.probe		= max8925_backlight_probe,
-	.remove		= max8925_backlight_remove,
 };
 
 module_platform_driver(max8925_backlight_driver);