1 files changed, 5 insertions, 82 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index c1d11924d892..835a5531d045 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -421,74 +421,6 @@ static void regulator_lock_dependent(struct regulator_dev *rdev,
 	mutex_unlock(&regulator_list_mutex);
 }
 
-/**
- * of_get_child_regulator - get a child regulator device node
- * based on supply name
- * @parent: Parent device node
- * @prop_name: Combination regulator supply name and "-supply"
- *
- * Traverse all child nodes.
- * Extract the child regulator device node corresponding to the supply name.
- *
- * Return: Pointer to the &struct device_node corresponding to the regulator
- *	   if found, or %NULL if not found.
- */
-static struct device_node *of_get_child_regulator(struct device_node *parent,
-						  const char *prop_name)
-{
-	struct device_node *regnode = NULL;
-	struct device_node *child = NULL;
-
-	for_each_child_of_node(parent, child) {
-		regnode = of_parse_phandle(child, prop_name, 0);
-
-		if (!regnode) {
-			regnode = of_get_child_regulator(child, prop_name);
-			if (regnode)
-				goto err_node_put;
-		} else {
-			goto err_node_put;
-		}
-	}
-	return NULL;
-
-err_node_put:
-	of_node_put(child);
-	return regnode;
-}
-
-/**
- * of_get_regulator - get a regulator device node based on supply name
- * @dev: Device pointer for the consumer (of regulator) device
- * @supply: regulator supply name
- *
- * Extract the regulator device node corresponding to the supply name.
- *
- * Return: Pointer to the &struct device_node corresponding to the regulator
- *	   if found, or %NULL if not found.
- */
-static struct device_node *of_get_regulator(struct device *dev, const char *supply)
-{
-	struct device_node *regnode = NULL;
-	char prop_name[64]; /* 64 is max size of property name */
-
-	dev_dbg(dev, "Looking up %s-supply from device tree\n", supply);
-
-	snprintf(prop_name, 64, "%s-supply", supply);
-	regnode = of_parse_phandle(dev->of_node, prop_name, 0);
-
-	if (!regnode) {
-		regnode = of_get_child_regulator(dev->of_node, prop_name);
-		if (regnode)
-			return regnode;
-
-		dev_dbg(dev, "Looking up %s property in node %pOF failed\n",
-				prop_name, dev->of_node);
-		return NULL;
-	}
-	return regnode;
-}
-
 /* Platform voltage constraint check */
 int regulator_check_voltage(struct regulator_dev *rdev,
 			    int *min_uV, int *max_uV)
@@ -2021,7 +1953,6 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 						  const char *supply)
 {
 	struct regulator_dev *r = NULL;
-	struct device_node *node;
 	struct regulator_map *map;
 	const char *devname = NULL;
 
@@ -2029,19 +1960,11 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
 
 	/* first do a dt based lookup */
 	if (dev && dev->of_node) {
-		node = of_get_regulator(dev, supply);
-		if (node) {
-			r = of_find_regulator_by_node(node);
-			of_node_put(node);
-			if (r)
-				return r;
-
-			/*
-			 * We have a node, but there is no device.
-			 * assume it has not registered yet.
-			 */
-			return ERR_PTR(-EPROBE_DEFER);
-		}
+		r = of_regulator_dev_lookup(dev, supply);
+		if (!IS_ERR(r))
+			return r;
+		if (PTR_ERR(r) == -EPROBE_DEFER)
+			return r;
 	}
 
 	/* if not found, try doing it non-dt way */