opp: Create _of_add_table_indexed() to reduce code duplication

The implementation of dev_pm_opp_of_add_table() and
dev_pm_opp_of_add_table_indexed() are almost identical. Create
_of_add_table_indexed() to reduce code redundancy.

Also remove the duplication of the doc style comments by referring to
dev_pm_opp_of_add_table() from dev_pm_opp_of_add_table_indexed().
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Dmitry Osipenko <digetx@gmail.com>

drivers/opp/of.c

@@ -956,29 +956,23 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
 	return ret;
 }
 
-/**
- * dev_pm_opp_of_add_table() - Initialize opp table from device tree
- * @dev:	device pointer used to lookup OPP table.
- *
- * Register the initial OPP table with the OPP library for given device.
- *
- * Return:
- * 0		On success OR
- *		Duplicate OPPs (both freq and volt are same) and opp->available
- * -EEXIST	Freq are same and volt are different OR
- *		Duplicate OPPs (both freq and volt are same) and !opp->available
- * -ENOMEM	Memory allocation failure
- * -ENODEV	when 'operating-points' property is not found or is invalid data
- *		in device node.
- * -ENODATA	when empty 'operating-points' property is found
- * -EINVAL	when invalid entries are found in opp-v2 table
- */
-int dev_pm_opp_of_add_table(struct device *dev)
+static int _of_add_table_indexed(struct device *dev, int index)
 {
 	struct opp_table *opp_table;
-	int ret;
+	int ret, count;
 
-	opp_table = _add_opp_table_indexed(dev, 0);
+	if (index) {
+		/*
+		 * If only one phandle is present, then the same OPP table
+		 * applies for all index requests.
+		 */
+		count = of_count_phandle_with_args(dev->of_node,
+						   "operating-points-v2", NULL);
+		if (count == 1)
+			index = 0;
+	}
+
+	opp_table = _add_opp_table_indexed(dev, index);
 	if (IS_ERR(opp_table))
 		return PTR_ERR(opp_table);
 
@@ -996,15 +990,12 @@ int dev_pm_opp_of_add_table(struct device *dev)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
 
 /**
- * dev_pm_opp_of_add_table_indexed() - Initialize indexed opp table from device tree
+ * dev_pm_opp_of_add_table() - Initialize opp table from device tree
  * @dev:	device pointer used to lookup OPP table.
- * @index:	Index number.
  *
- * Register the initial OPP table with the OPP library for given device only
- * using the "operating-points-v2" property.
+ * Register the initial OPP table with the OPP library for given device.
  *
  * Return:
  * 0		On success OR
@@ -1017,31 +1008,25 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
  * -ENODATA	when empty 'operating-points' property is found
  * -EINVAL	when invalid entries are found in opp-v2 table
  */
-int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
+int dev_pm_opp_of_add_table(struct device *dev)
 {
-	struct opp_table *opp_table;
-	int ret, count;
-
-	if (index) {
-		/*
-		 * If only one phandle is present, then the same OPP table
-		 * applies for all index requests.
-		 */
-		count = of_count_phandle_with_args(dev->of_node,
-						   "operating-points-v2", NULL);
-		if (count == 1)
-			index = 0;
-	}
-
-	opp_table = _add_opp_table_indexed(dev, index);
-	if (IS_ERR(opp_table))
-		return PTR_ERR(opp_table);
-
-	ret = _of_add_opp_table_v2(dev, opp_table);
-	if (ret)
-		dev_pm_opp_put_opp_table(opp_table);
+	return _of_add_table_indexed(dev, 0);
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
 
-	return ret;
+/**
+ * dev_pm_opp_of_add_table_indexed() - Initialize indexed opp table from device tree
+ * @dev:	device pointer used to lookup OPP table.
+ * @index:	Index number.
+ *
+ * Register the initial OPP table with the OPP library for given device only
+ * using the "operating-points-v2" property.
+ *
+ * Return: Refer to dev_pm_opp_of_add_table() for return values.
+ */
+int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
+{
+	return _of_add_table_indexed(dev, index);
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_indexed);