Input: jornada720_ts - switch to using managed resources

This switches the driver to using managed resources to simplify error
handling and to do away with remove function.

Signed-off-by: Pramod Gurav <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/touchscreen/jornada720_ts.c

···
 	struct input_dev *input_dev;
 	int error;
 
-	jornada_ts = kzalloc(sizeof(struct jornada_ts), GFP_KERNEL);
-	input_dev = input_allocate_device();
+	jornada_ts = devm_kzalloc(&pdev->dev, sizeof(*jornada_ts), GFP_KERNEL);
+	if (!jornada_ts)
+		return -ENOMEM;
 
-	if (!jornada_ts || !input_dev) {
-		error = -ENOMEM;
-		goto fail1;
-	}
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev)
+		return -ENOMEM;
 
 	platform_set_drvdata(pdev, jornada_ts);
 
···
 	input_set_abs_params(input_dev, ABS_X, 270, 3900, 0, 0);
 	input_set_abs_params(input_dev, ABS_Y, 180, 3700, 0, 0);
 
-	error = request_irq(IRQ_GPIO9,
-			jornada720_ts_interrupt,
-			IRQF_TRIGGER_RISING,
-			"HP7XX Touchscreen driver", pdev);
+	error = devm_request_irq(&pdev->dev, IRQ_GPIO9,
+				 jornada720_ts_interrupt,
+				 IRQF_TRIGGER_RISING,
+				 "HP7XX Touchscreen driver", pdev);
 	if (error) {
-		printk(KERN_INFO "HP7XX TS : Unable to acquire irq!\n");
-		goto fail1;
+		dev_err(&pdev->dev, "HP7XX TS : Unable to acquire irq!\n");
+		return error;
 	}
 
 	error = input_register_device(jornada_ts->dev);
 	if (error)
-		goto fail2;
-
-	return 0;
-
- fail2:
-	free_irq(IRQ_GPIO9, pdev);
- fail1:
-	input_free_device(input_dev);
-	kfree(jornada_ts);
-	return error;
-}
-
-static int jornada720_ts_remove(struct platform_device *pdev)
-{
-	struct jornada_ts *jornada_ts = platform_get_drvdata(pdev);
-
-	free_irq(IRQ_GPIO9, pdev);
-	input_unregister_device(jornada_ts->dev);
-	kfree(jornada_ts);
+		return error;
 
 	return 0;
 }
···
 
 static struct platform_driver jornada720_ts_driver = {
 	.probe		= jornada720_ts_probe,
-	.remove		= jornada720_ts_remove,
 	.driver		= {
 		.name	= "jornada_ts",
 		.owner	= THIS_MODULE,