[PATCH v4 3/3] iio: imu: inv_mpu6050: control vdd supply using devm-helpers

[Andrey Skvortsov <andrej.skvortzov@gmail.com>]

vdd supply will be automatically disabled on error condition during a
probe and on driver cleanup.

Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
---

Changes in v4:
 - no actual changes
 
Changes in v3:
 - no dead code in inv_mpu_core_disable_regulator_action anymore since st variable
   is used to get 'struct device' now

 drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 23 ++++------------------
 drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h  |  1 -
 2 files changed, 4 insertions(+), 20 deletions(-)

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index 6fd35ea5daabb..c170efce7d31c 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -1863,12 +1863,6 @@ static void inv_mpu_core_disable_regulator_action(void *_data)
 {
 	struct inv_mpu6050_state *st = _data;
 	struct device *dev = regmap_get_device(st->map);
-	int result;
-
-	result = regulator_disable(st->vdd_supply);
-	if (result)
-		dev_err(regmap_get_device(st->map),
-			"Failed to disable vdd regulator: %d\n", result);
 
 	if (!pm_runtime_status_suspended(dev))
 		inv_mpu_core_disable_regulator_vddio(st);
@@ -1948,21 +1942,14 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 
 	device_set_wakeup_capable(dev, true);
 
-	st->vdd_supply = devm_regulator_get(dev, "vdd");
-	if (IS_ERR(st->vdd_supply))
-		return dev_err_probe(dev, PTR_ERR(st->vdd_supply),
-				     "Failed to get vdd regulator\n");
-
 	st->vddio_supply = devm_regulator_get(dev, "vddio");
 	if (IS_ERR(st->vddio_supply))
 		return dev_err_probe(dev, PTR_ERR(st->vddio_supply),
 				     "Failed to get vddio regulator\n");
 
-	result = regulator_enable(st->vdd_supply);
-	if (result) {
-		dev_err(dev, "Failed to enable vdd regulator: %d\n", result);
-		return result;
-	}
+	result = devm_regulator_get_enable(dev, "vdd");
+	if (result)
+		return dev_err_probe(dev, result, "Failed to enable vdd regulator\n");
 	msleep(INV_MPU6050_POWER_UP_TIME);
 
 	/* set pm_runtime active early for disable vddio resource cleanup */
@@ -1971,10 +1958,8 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 		return result;
 
 	result = inv_mpu_core_enable_regulator_vddio(st);
-	if (result) {
-		regulator_disable(st->vdd_supply);
+	if (result)
 		return result;
-	}
 
 	result = devm_add_action_or_reset(dev, inv_mpu_core_disable_regulator_action,
 				 st);
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index 6239b1a803f77..2c0cf53c9a627 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -206,7 +206,6 @@ struct inv_mpu6050_state {
 	u8 irq_mask;
 	unsigned skip_samples;
 	struct inv_sensors_timestamp timestamp;
-	struct regulator *vdd_supply;
 	struct regulator *vddio_supply;
 	bool magn_disabled;
 	s32 magn_raw_to_gauss[3];
-- 
2.53.0