// SPDX-License-Identifier: GPL-2.0+
/*
* drivers/of/property.c - Procedures for accessing and interpreting
* Devicetree properties and graphs.
*
* Initially created by copying procedures from drivers/of/base.c. This
* file contains the OF property as well as the OF graph interface
* functions.
*
* Paul Mackerras August 1996.
* Copyright (C) 1996-2005 Paul Mackerras.
*
* Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
* {engebret|bergner}@us.ibm.com
*
* Adapted for sparc and sparc64 by David S. Miller davem@davemloft.net
*
* Reconsolidated from arch/x/kernel/prom.c by Stephen Rothwell and
* Grant Likely.
*/
#define pr_fmt(fmt) "OF: " fmt
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_graph.h>
#include <linux/of_irq.h>
#include <linux/string.h>
#include <linux/moduleparam.h>
#include "of_private.h"
/**
* of_graph_is_present() - check graph's presence
* @node: pointer to device_node containing graph port
*
* Return: True if @node has a port or ports (with a port) sub-node,
* false otherwise.
*/
bool of_graph_is_present(const struct device_node *node)
{
struct device_node *ports __free(device_node) = of_get_child_by_name(node, "ports");
if (ports)
node = ports;
struct device_node *port __free(device_node) 