static int _of_opp_alloc_required_opps()

in of.c [279:326]

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

static int _of_opp_alloc_required_opps(struct opp_table *opp_table,
				       struct dev_pm_opp *opp)
{
	struct dev_pm_opp **required_opps;
	struct opp_table *required_table;
	struct device_node *np;
	int i, ret, count = opp_table->required_opp_count;

	if (!count)
		return 0;

	required_opps = kcalloc(count, sizeof(*required_opps), GFP_KERNEL);
	if (!required_opps)
		return -ENOMEM;

	opp->required_opps = required_opps;

	for (i = 0; i < count; i++) {
		required_table = opp_table->required_opp_tables[i];

		/* Required table not added yet, we will link later */
		if (IS_ERR_OR_NULL(required_table))
			continue;

		np = of_parse_required_opp(opp->np, i);
		if (unlikely(!np)) {
			ret = -ENODEV;
			goto free_required_opps;
		}

		required_opps[i] = _find_opp_of_np(required_table, np);
		of_node_put(np);

		if (!required_opps[i]) {
			pr_err("%s: Unable to find required OPP node: %pOF (%d)\n",
			       __func__, opp->np, i);
			ret = -ENODEV;
			goto free_required_opps;
		}
	}

	return 0;

free_required_opps:
	_of_opp_free_required_opps(opp_table, opp);

	return ret;
}