regulator: core: Add helper to put of_nodes from matches
As of_regulator_match will take an of_node reference to each matched
regulator, it makes sense to provide a helper to put all those
references. This patch does that.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index c58c8d1..188e0cb 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -172,3 +172,24 @@
return count;
}
EXPORT_SYMBOL_GPL(of_regulator_match);
+
+/**
+ * of_regulator_put_match - put the of_node references from an
+ * of_regulator_match structure
+ * @matches: match table for the regulators
+ * @num_matches: number of entries in match table
+ *
+ * This function goes through a match table and calls of_node_put on each
+ * of_node.
+ */
+int of_regulator_put_match(struct of_regulator_match *matches,
+ unsigned int num_matches)
+{
+ int i;
+
+ for (i = 0; i < num_matches; i++)
+ of_node_put(matches[i].of_node);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(of_regulator_put_match);
diff --git a/include/linux/regulator/of_regulator.h b/include/linux/regulator/of_regulator.h
index f921796..0652851 100644
--- a/include/linux/regulator/of_regulator.h
+++ b/include/linux/regulator/of_regulator.h
@@ -20,6 +20,8 @@
extern int of_regulator_match(struct device *dev, struct device_node *node,
struct of_regulator_match *matches,
unsigned int num_matches);
+extern int of_regulator_put_match(struct of_regulator_match *matches,
+ unsigned int num_matches);
#else
static inline struct regulator_init_data
*of_get_regulator_init_data(struct device *dev,
@@ -35,6 +37,11 @@
{
return 0;
}
+static inline int of_regulator_put_match(struct of_regulator_match *matches,
+ unsigned int num_matches);
+{
+ return 0;
+}
#endif /* CONFIG_OF */
#endif /* __LINUX_OF_REG_H */