--- zzzz-none-000/linux-3.10.107/drivers/hwmon/iio_hwmon.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/hwmon/iio_hwmon.c	2021-02-04 17:41:59.000000000 +0000
@@ -31,6 +31,7 @@
 	int num_channels;
 	struct device *hwmon_dev;
 	struct attribute_group attr_group;
+	const struct attribute_group *groups[2];
 	struct attribute **attrs;
 };
 
@@ -56,28 +57,19 @@
 	return sprintf(buf, "%d\n", result);
 }
 
-static ssize_t show_name(struct device *dev, struct device_attribute *attr,
-			 char *buf)
-{
-	const char *name = "iio_hwmon";
-
-	if (dev->of_node && dev->of_node->name)
-		name = dev->of_node->name;
-
-	return sprintf(buf, "%s\n", name);
-}
-
-static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
-
 static int iio_hwmon_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct iio_hwmon_state *st;
 	struct sensor_device_attribute *a;
 	int ret, i;
-	int in_i = 1, temp_i = 1, curr_i = 1;
+	int in_i = 1, temp_i = 1, curr_i = 1, humidity_i = 1;
 	enum iio_chan_type type;
 	struct iio_channel *channels;
+	const char *name = "iio_hwmon";
+
+	if (dev->of_node && dev->of_node->name)
+		name = dev->of_node->name;
 
 	channels = iio_channel_get_all(dev);
 	if (IS_ERR(channels))
@@ -96,7 +88,7 @@
 		st->num_channels++;
 
 	st->attrs = devm_kzalloc(dev,
-				 sizeof(*st->attrs) * (st->num_channels + 2),
+				 sizeof(*st->attrs) * (st->num_channels + 1),
 				 GFP_KERNEL);
 	if (st->attrs == NULL) {
 		ret = -ENOMEM;
@@ -117,19 +109,24 @@
 
 		switch (type) {
 		case IIO_VOLTAGE:
-			a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
-							  "in%d_input",
-							  in_i++);
+			a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+							       "in%d_input",
+							       in_i++);
 			break;
 		case IIO_TEMP:
-			a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
-							  "temp%d_input",
-							  temp_i++);
+			a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+							       "temp%d_input",
+							       temp_i++);
 			break;
 		case IIO_CURRENT:
-			a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
-							  "curr%d_input",
-							  curr_i++);
+			a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+							       "curr%d_input",
+							       curr_i++);
+			break;
+		case IIO_HUMIDITYRELATIVE:
+			a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+							       "humidity%d_input",
+							       humidity_i++);
 			break;
 		default:
 			ret = -EINVAL;
@@ -144,22 +141,18 @@
 		a->index = i;
 		st->attrs[i] = &a->dev_attr.attr;
 	}
-	st->attrs[st->num_channels] = &dev_attr_name.attr;
-	st->attr_group.attrs = st->attrs;
-	platform_set_drvdata(pdev, st);
-	ret = sysfs_create_group(&dev->kobj, &st->attr_group);
-	if (ret < 0)
-		goto error_release_channels;
 
-	st->hwmon_dev = hwmon_device_register(dev);
+	st->attr_group.attrs = st->attrs;
+	st->groups[0] = &st->attr_group;
+	st->hwmon_dev = hwmon_device_register_with_groups(dev, name, st,
+							  st->groups);
 	if (IS_ERR(st->hwmon_dev)) {
 		ret = PTR_ERR(st->hwmon_dev);
-		goto error_remove_group;
+		goto error_release_channels;
 	}
+	platform_set_drvdata(pdev, st);
 	return 0;
 
-error_remove_group:
-	sysfs_remove_group(&dev->kobj, &st->attr_group);
 error_release_channels:
 	iio_channel_release_all(channels);
 	return ret;
@@ -170,21 +163,20 @@
 	struct iio_hwmon_state *st = platform_get_drvdata(pdev);
 
 	hwmon_device_unregister(st->hwmon_dev);
-	sysfs_remove_group(&pdev->dev.kobj, &st->attr_group);
 	iio_channel_release_all(st->channels);
 
 	return 0;
 }
 
-static struct of_device_id iio_hwmon_of_match[] = {
+static const struct of_device_id iio_hwmon_of_match[] = {
 	{ .compatible = "iio-hwmon", },
 	{ }
 };
+MODULE_DEVICE_TABLE(of, iio_hwmon_of_match);
 
 static struct platform_driver __refdata iio_hwmon_driver = {
 	.driver = {
 		.name = "iio_hwmon",
-		.owner = THIS_MODULE,
 		.of_match_table = iio_hwmon_of_match,
 	},
 	.probe = iio_hwmon_probe,