OPP: Add _link_required_opps() to avoid code duplication

Factor out _link_required_opps() to remove duplicate code. No functional
change.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/opp/of.c

@@ -296,24 +296,41 @@ void _of_clear_opp(struct opp_table *opp_table, struct dev_pm_opp *opp)
 	of_node_put(opp->np);
 }
 
+static int _link_required_opps(struct dev_pm_opp *opp,
+			       struct opp_table *required_table, int index)
+{
+	struct device_node *np;
+
+	np = of_parse_required_opp(opp->np, index);
+	if (unlikely(!np))
+		return -ENODEV;
+
+	opp->required_opps[index] = _find_opp_of_np(required_table, np);
+	of_node_put(np);
+
+	if (!opp->required_opps[index]) {
+		pr_err("%s: Unable to find required OPP node: %pOF (%d)\n",
+		       __func__, opp->np, index);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
 /* Populate all required OPPs which are part of "required-opps" list */
 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)
+	opp->required_opps = kcalloc(count, sizeof(*opp->required_opps), GFP_KERNEL);
+	if (!opp->required_opps)
 		return -ENOMEM;
 
-	opp->required_opps = required_opps;
-
 	for (i = 0; i < count; i++) {
 		required_table = opp_table->required_opp_tables[i];
 
@@ -321,21 +338,9 @@ static int _of_opp_alloc_required_opps(struct opp_table *opp_table,
 		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;
+		ret = _link_required_opps(opp, required_table, i);
+		if (ret)
 			goto free_required_opps;
-		}
 	}
 
 	return 0;
@@ -350,22 +355,13 @@ static int _of_opp_alloc_required_opps(struct opp_table *opp_table,
 static int lazy_link_required_opps(struct opp_table *opp_table,
 				   struct opp_table *new_table, int index)
 {
-	struct device_node *required_np;
 	struct dev_pm_opp *opp;
+	int ret;
 
 	list_for_each_entry(opp, &opp_table->opp_list, node) {
-		required_np = of_parse_required_opp(opp->np, index);
-		if (unlikely(!required_np))
-			return -ENODEV;
-
-		opp->required_opps[index] = _find_opp_of_np(new_table, required_np);
-		of_node_put(required_np);
-
-		if (!opp->required_opps[index]) {
-			pr_err("%s: Unable to find required OPP node: %pOF (%d)\n",
-			       __func__, opp->np, index);
-			return -ENODEV;
-		}
+		ret = _link_required_opps(opp, new_table, index);
+		if (ret)
+			return ret;
 	}
 
 	return 0;