gpio: twl4030: Use devm_gpiochip_add_data() to simplify remove path

Use devm version of gpiochip add function to handle removal for us.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

drivers/gpio/gpio-twl4030.c

@@ -492,18 +492,6 @@ static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev,
 	return omap_twl_info;
 }
 
-/* Cannot use as gpio_twl4030_probe() calls us */
-static int gpio_twl4030_remove(struct platform_device *pdev)
-{
-	struct gpio_twl4030_priv *priv = platform_get_drvdata(pdev);
-
-	gpiochip_remove(&priv->gpio_chip);
-
-	/* REVISIT no support yet for deregistering all the IRQs */
-	WARN_ON(!is_module());
-	return 0;
-}
-
 static int gpio_twl4030_probe(struct platform_device *pdev)
 {
 	struct twl4030_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
@@ -577,16 +565,13 @@ static int gpio_twl4030_probe(struct platform_device *pdev)
 	if (pdata->use_leds)
 		priv->gpio_chip.ngpio += 2;
 
-	ret = gpiochip_add_data(&priv->gpio_chip, priv);
+	ret = devm_gpiochip_add_data(&pdev->dev, &priv->gpio_chip, priv);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "could not register gpiochip, %d\n", ret);
 		priv->gpio_chip.ngpio = 0;
-		gpio_twl4030_remove(pdev);
-		goto out;
+		return ret;
 	}
 
-	platform_set_drvdata(pdev, priv);
-
 	if (pdata->setup) {
 		int status;
 
@@ -596,8 +581,7 @@ static int gpio_twl4030_probe(struct platform_device *pdev)
 			dev_dbg(&pdev->dev, "setup --> %d\n", status);
 	}
 
-out:
-	return ret;
+	return 0;
 }
 
 static const struct of_device_id twl_gpio_match[] = {
@@ -615,7 +599,6 @@ static struct platform_driver gpio_twl4030_driver = {
 		.of_match_table = twl_gpio_match,
 	},
 	.probe		= gpio_twl4030_probe,
-	.remove		= gpio_twl4030_remove,
 };
 
 static int __init gpio_twl4030_init(void)