Commit ba003319 authored by Viresh Kumar's avatar Viresh Kumar
Browse files

opp: Free static OPPs on errors while adding them



The static OPPs aren't getting freed properly, if errors occur while
adding them. Fix that by calling _put_opp_list_kref() and putting their
reference on failures.

Fixes: 11e1a164 ("opp: Don't decrement uninitialized list_kref")
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent e42617b8
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+13 −4
Original line number Diff line number Diff line
@@ -678,15 +678,17 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
			dev_err(dev, "%s: Failed to add OPP, %d\n", __func__,
				ret);
			of_node_put(np);
			return ret;
			goto put_list_kref;
		} else if (opp) {
			count++;
		}
	}

	/* There should be one of more OPP defined */
	if (WARN_ON(!count))
		return -ENOENT;
	if (WARN_ON(!count)) {
		ret = -ENOENT;
		goto put_list_kref;
	}

	list_for_each_entry(opp, &opp_table->opp_list, node)
		pstate_count += !!opp->pstate;
@@ -695,7 +697,8 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
	if (pstate_count && pstate_count != count) {
		dev_err(dev, "Not all nodes have performance state set (%d: %d)\n",
			count, pstate_count);
		return -ENOENT;
		ret = -ENOENT;
		goto put_list_kref;
	}

	if (pstate_count)
@@ -704,6 +707,11 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
	opp_table->parsed_static_opps = true;

	return 0;

put_list_kref:
	_put_opp_list_kref(opp_table);

	return ret;
}

/* Initializes OPP tables based on old-deprecated bindings */
@@ -738,6 +746,7 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
		if (ret) {
			dev_err(dev, "%s: Failed to add OPP %ld (%d)\n",
				__func__, freq, ret);
			_put_opp_list_kref(opp_table);
			return ret;
		}
		nr -= 2;