[PATCH v4 4/7] iio: light: vcnl4000: replace mutex_init with devm_mutex_init

[Erikas Bitovtas <xerikasxx@gmail.com>]

Replace mutex_init used across driver with its device-managed
counterpart, so all assigned mutexes get destroyed.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
 drivers/iio/light/vcnl4000.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index 287ccd89cfb2..cd7e6ee42cc5 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -356,6 +356,8 @@ static int vcnl4200_set_power_state(struct vcnl4000_data *data, bool on)
 
 static int vcnl4200_init(struct vcnl4000_data *data)
 {
+	struct i2c_client *client = data->client;
+	struct device *dev = &client->dev;
 	int ret, id;
 	u16 regval;
 
@@ -400,8 +402,14 @@ static int vcnl4200_init(struct vcnl4000_data *data)
 	}
 	data->al_scale = data->chip_spec->ulux_step;
 	data->ps_scale = 16;
-	mutex_init(&data->vcnl4200_al.lock);
-	mutex_init(&data->vcnl4200_ps.lock);
+
+	ret = devm_mutex_init(dev, &data->vcnl4200_al.lock);
+	if (ret)
+		return ret;
+
+	ret = devm_mutex_init(dev, &data->vcnl4200_ps.lock);
+	if (ret)
+		return ret;
 
 	/* Use 16 bits proximity sensor readings */
 	ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
@@ -1979,6 +1987,7 @@ static int vcnl4010_probe_trigger(struct iio_dev *indio_dev)
 static int vcnl4000_probe(struct i2c_client *client)
 {
 	const struct i2c_device_id *id = i2c_client_get_device_id(client);
+	struct device *dev = &client->dev;
 	struct vcnl4000_data *data;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -1993,7 +2002,9 @@ static int vcnl4000_probe(struct i2c_client *client)
 	data->id = id->driver_data;
 	data->chip_spec = &vcnl4000_chip_spec_cfg[data->id];
 
-	mutex_init(&data->vcnl4000_lock);
+	ret = devm_mutex_init(dev, &data->vcnl4000_lock);
+	if (ret)
+		return ret;
 
 	ret = data->chip_spec->init(data);
 	if (ret < 0)

-- 
2.53.0