static int _bandwidth_supported()

in of.c [418:453]

• 27 lines of code
• 7 McCabe index (conditional complexity)

static int _bandwidth_supported(struct device *dev, struct opp_table *opp_table)
{
	struct device_node *np, *opp_np;
	struct property *prop;

	if (!opp_table) {
		np = of_node_get(dev->of_node);
		if (!np)
			return -ENODEV;

		opp_np = _opp_of_get_opp_desc_node(np, 0);
		of_node_put(np);
	} else {
		opp_np = of_node_get(opp_table->np);
	}

	/* Lets not fail in case we are parsing opp-v1 bindings */
	if (!opp_np)
		return 0;

	/* Checking only first OPP is sufficient */
	np = of_get_next_available_child(opp_np, NULL);
	if (!np) {
		dev_err(dev, "OPP table empty\n");
		return -EINVAL;
	}
	of_node_put(opp_np);

	prop = of_find_property(np, "opp-peak-kBps", NULL);
	of_node_put(np);

	if (!prop || !prop->length)
		return 0;

	return 1;
}