1 files changed, 30 insertions, 37 deletions

diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c
index e4586ee8858..ef1af2debbd 100644
--- a/drivers/regulator/max77686.c
+++ b/drivers/regulator/max77686.c
@@ -24,7 +24,6 @@
 
 #include <linux/kernel.h>
 #include <linux/bug.h>
-#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/gpio.h>
 #include <linux/slab.h>
@@ -66,7 +65,6 @@ enum max77686_ramp_rate {
 };
 
 struct max77686_data {
-	struct regulator_dev *rdev[MAX77686_REGULATORS];
 	unsigned int opmode[MAX77686_REGULATORS];
 };
 
@@ -75,17 +73,20 @@ static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev)
 {
 	unsigned int val;
 	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
-        int id = rdev_get_id(rdev);
+	int ret, id = rdev_get_id(rdev);
 
 	if (id == MAX77686_BUCK1)
 		val = 0x1;
 	else
 		val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT;
 
+	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+				 rdev->desc->enable_mask, val);
+	if (ret)
+		return ret;
+
 	max77686->opmode[id] = val;
-	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
-				  rdev->desc->enable_mask,
-				  val);
+	return 0;
 }
 
 /* Some LDOs supports [LPM/Normal]ON mode during suspend state */
@@ -94,7 +95,7 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,
 {
 	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
 	unsigned int val;
-        int id = rdev_get_id(rdev);
+	int ret, id = rdev_get_id(rdev);
 
 	/* BUCK[5-9] doesn't support this feature */
 	if (id >= MAX77686_BUCK5)
@@ -113,10 +114,13 @@ static int max77686_set_suspend_mode(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
+	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+				  rdev->desc->enable_mask, val);
+	if (ret)
+		return ret;
+
 	max77686->opmode[id] = val;
-	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
-				  rdev->desc->enable_mask,
-				  val);
+	return 0;
 }
 
 /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
@@ -125,6 +129,7 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
 {
 	unsigned int val;
 	struct max77686_data *max77686 = rdev_get_drvdata(rdev);
+	int ret;
 
 	switch (mode) {
 	case REGULATOR_MODE_STANDBY:			/* switch off */
@@ -142,10 +147,13 @@ static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
+	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+				 rdev->desc->enable_mask, val);
+	if (ret)
+		return ret;
+
 	max77686->opmode[rdev_get_id(rdev)] = val;
-	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
-				  rdev->desc->enable_mask,
-				  val);
+	return 0;
 }
 
 static int max77686_enable(struct regulator_dev *rdev)
@@ -391,7 +399,7 @@ static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
 	unsigned int i;
 
 	pmic_np = iodev->dev->of_node;
-	regulators_np = of_find_node_by_name(pmic_np, "voltage-regulators");
+	regulators_np = of_get_child_by_name(pmic_np, "voltage-regulators");
 	if (!regulators_np) {
 		dev_err(&pdev->dev, "could not find regulators sub-node\n");
 		return -EINVAL;
@@ -401,8 +409,7 @@ static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
 	rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
 			     pdata->num_regulators, GFP_KERNEL);
 	if (!rdata) {
-		dev_err(&pdev->dev,
-			"could not allocate memory for regulator data\n");
+		of_node_put(regulators_np);
 		return -ENOMEM;
 	}
 
@@ -416,6 +423,7 @@ static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev,
 	}
 
 	pdata->regulators = rdata;
+	of_node_put(regulators_np);
 
 	return 0;
 }
@@ -465,36 +473,22 @@ static int max77686_pmic_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, max77686);
 
 	for (i = 0; i < MAX77686_REGULATORS; i++) {
+		struct regulator_dev *rdev;
+
 		config.init_data = pdata->regulators[i].initdata;
 		config.of_node = pdata->regulators[i].of_node;
 
 		max77686->opmode[i] = regulators[i].enable_mask;
-		max77686->rdev[i] = regulator_register(&regulators[i], &config);
-		if (IS_ERR(max77686->rdev[i])) {
-			ret = PTR_ERR(max77686->rdev[i]);
+		rdev = devm_regulator_register(&pdev->dev,
+						&regulators[i], &config);
+		if (IS_ERR(rdev)) {
 			dev_err(&pdev->dev,
 				"regulator init failed for %d\n", i);
-			max77686->rdev[i] = NULL;
-			goto err;
+			return PTR_ERR(rdev);
 		}
 	}
 
 	return 0;
-err:
-	while (--i >= 0)
-		regulator_unregister(max77686->rdev[i]);
-	return ret;
-}
-
-static int max77686_pmic_remove(struct platform_device *pdev)
-{
-	struct max77686_data *max77686 = platform_get_drvdata(pdev);
-	int i;
-
-	for (i = 0; i < MAX77686_REGULATORS; i++)
-		regulator_unregister(max77686->rdev[i]);
-
-	return 0;
 }
 
 static const struct platform_device_id max77686_pmic_id[] = {
@@ -509,7 +503,6 @@ static struct platform_driver max77686_pmic_driver = {
 		.owner = THIS_MODULE,
 	},
 	.probe = max77686_pmic_probe,
-	.remove = max77686_pmic_remove,
 	.id_table = max77686_pmic_id,
 };