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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/devfreq/devfreq-event.c
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@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * devfreq-event: a framework to provide raw data and events of devfreq devices
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  *
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  * Copyright (C) 2015 Samsung Electronics
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  * Author: Chanwoo Choi <cw00.choi@samsung.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  *
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  * This driver is based on drivers/devfreq/devfreq.c.
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  */
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@@ -216,20 +213,21 @@
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  * devfreq_event_get_edev_by_phandle() - Get the devfreq-event dev from
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  *					 devicetree.
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  * @dev		: the pointer to the given device
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+ * @phandle_name: name of property holding a phandle value
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  * @index	: the index into list of devfreq-event device
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  *
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  * Note that this function return the pointer of devfreq-event device.
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  */
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 struct devfreq_event_dev *devfreq_event_get_edev_by_phandle(struct device *dev,
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-						      int index)
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+					const char *phandle_name, int index)
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 {
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 	struct device_node *node;
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 	struct devfreq_event_dev *edev;
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-	if (!dev->of_node)
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+	if (!dev->of_node || !phandle_name)
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 		return ERR_PTR(-EINVAL);
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-	node = of_parse_phandle(dev->of_node, "devfreq-events", index);
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+	node = of_parse_phandle(dev->of_node, phandle_name, index);
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 	if (!node)
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 		return ERR_PTR(-ENODEV);
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@@ -240,7 +238,7 @@
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 	}
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 	list_for_each_entry(edev, &devfreq_event_list, node) {
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-		if (!strcmp(edev->desc->name, node->name))
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+		if (of_node_name_eq(node, edev->desc->name))
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 			goto out;
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 	}
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 	edev = NULL;
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@@ -261,19 +259,20 @@
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 /**
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  * devfreq_event_get_edev_count() - Get the count of devfreq-event dev
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  * @dev		: the pointer to the given device
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+ * @phandle_name: name of property holding a phandle value
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  *
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  * Note that this function return the count of devfreq-event devices.
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  */
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-int devfreq_event_get_edev_count(struct device *dev)
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+int devfreq_event_get_edev_count(struct device *dev, const char *phandle_name)
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 {
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 	int count;
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-	if (!dev->of_node) {
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+	if (!dev->of_node || !phandle_name) {
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 		dev_err(dev, "device does not have a device node entry\n");
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 		return -EINVAL;
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 	}
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-	count = of_property_count_elems_of_size(dev->of_node, "devfreq-events",
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+	count = of_property_count_elems_of_size(dev->of_node, phandle_name,
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 						sizeof(u32));
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 	if (count < 0) {
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 		dev_err(dev,
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@@ -296,7 +295,7 @@
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 /**
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  * devfreq_event_add_edev() - Add new devfreq-event device.
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  * @dev		: the device owning the devfreq-event device being created
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- * @desc	: the devfreq-event device's decriptor which include essential
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+ * @desc	: the devfreq-event device's descriptor which include essential
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  *		  data for devfreq-event device.
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  *
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  * Note that this function add new devfreq-event device to devfreq-event class
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@@ -349,9 +348,9 @@
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 /**
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  * devfreq_event_remove_edev() - Remove the devfreq-event device registered.
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- * @dev		: the devfreq-event device
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+ * @edev	: the devfreq-event device
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  *
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- * Note that this function remove the registered devfreq-event device.
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+ * Note that this function removes the registered devfreq-event device.
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  */
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 int devfreq_event_remove_edev(struct devfreq_event_dev *edev)
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 {
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@@ -388,7 +387,7 @@
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 /**
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  * devm_devfreq_event_add_edev() - Resource-managed devfreq_event_add_edev()
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  * @dev		: the device owning the devfreq-event device being created
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- * @desc	: the devfreq-event device's decriptor which include essential
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+ * @desc	: the devfreq-event device's descriptor which include essential
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  *		  data for devfreq-event device.
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  *
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  * Note that this function manages automatically the memory of devfreq-event