xmax = panel.finger_max.x_low | (panel.finger_max.x_high << 8);
        ymax = panel.finger_max.y_low | (panel.finger_max.y_high << 8);
 
-       priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-       input = input_allocate_device();
-       if (!priv || !input) {
-               error = -ENOMEM;
-               goto err_free_mem;
-       }
+       priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+       if (!priv)
+               return -ENOMEM;
+
+       input = devm_input_allocate_device(dev);
+       if (!input)
+               return -ENOMEM;
 
        priv->client = client;
        priv->input = input;
 err_free_irq:
        free_irq(client->irq, priv);
 err_free_mem:
-       input_free_device(input);
-       kfree(priv);
        return error;
 }
 
        sysfs_remove_group(&client->dev.kobj, &ili210x_attr_group);
        free_irq(priv->client->irq, priv);
        cancel_delayed_work_sync(&priv->dwork);
-       input_unregister_device(priv->input);
-       kfree(priv);
 
        return 0;
 }