static int _read_opp_key()

in of.c [768:809]

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

static int _read_opp_key(struct dev_pm_opp *new_opp, struct opp_table *table,
			 struct device_node *np, bool *rate_not_available)
{
	bool found = false;
	u64 rate;
	int ret;

	ret = of_property_read_u64(np, "opp-hz", &rate);
	if (!ret) {
		/*
		 * Rate is defined as an unsigned long in clk API, and so
		 * casting explicitly to its type. Must be fixed once rate is 64
		 * bit guaranteed in clk API.
		 */
		new_opp->rate = (unsigned long)rate;
		found = true;
	}
	*rate_not_available = !!ret;

	/*
	 * Bandwidth consists of peak and average (optional) values:
	 * opp-peak-kBps = <path1_value path2_value>;
	 * opp-avg-kBps = <path1_value path2_value>;
	 */
	ret = _read_bw(new_opp, table, np, true);
	if (!ret) {
		found = true;
		ret = _read_bw(new_opp, table, np, false);
	}

	/* The properties were found but we failed to parse them */
	if (ret && ret != -ENODEV)
		return ret;

	if (!of_property_read_u32(np, "opp-level", &new_opp->level))
		found = true;

	if (found)
		return 0;

	return ret;
}