hwmon: (lm75) simplify regulator handling

devm_regulator_get_enable() was introduced exactly to avoid open coding
regulator handling like in this driver. Make use of this helper.

Signed-off-by: Wolfram Sang <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>

Author: Wolfram Sang

drivers/hwmon/lm75.c

@@ -109,7 +109,6 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, 0x4c,
 struct lm75_data {
 	struct i2c_client		*client;
 	struct regmap			*regmap;
-	struct regulator		*vs;
 	u16				orig_conf;
 	u8				resolution;	/* In bits, 9 to 16 */
 	unsigned int			sample_time;	/* In ms */
@@ -621,13 +620,6 @@ static const struct regmap_bus lm75_i2c_regmap_bus = {
 	.reg_write = lm75_i2c_reg_write,
 };
 
-static void lm75_disable_regulator(void *data)
-{
-	struct lm75_data *lm75 = data;
-
-	regulator_disable(lm75->vs);
-}
-
 static void lm75_remove(void *data)
 {
 	struct lm75_data *lm75 = data;
@@ -656,9 +648,9 @@ static int lm75_probe(struct i2c_client *client)
 	data->client = client;
 	data->kind = (uintptr_t)i2c_get_match_data(client);
 
-	data->vs = devm_regulator_get(dev, "vs");
-	if (IS_ERR(data->vs))
-		return PTR_ERR(data->vs);
+	err = devm_regulator_get_enable(dev, "vs");
+	if (err)
+		return err;
 
 	data->regmap = devm_regmap_init(dev, &lm75_i2c_regmap_bus, data,
 					&lm75_regmap_config);
@@ -675,17 +667,6 @@ static int lm75_probe(struct i2c_client *client)
 	data->sample_time = data->params->default_sample_time;
 	data->resolution = data->params->default_resolution;
 
-	/* Enable the power */
-	err = regulator_enable(data->vs);
-	if (err) {
-		dev_err(dev, "failed to enable regulator: %d\n", err);
-		return err;
-	}
-
-	err = devm_add_action_or_reset(dev, lm75_disable_regulator, data);
-	if (err)
-		return err;
-
 	/* Cache original configuration */
 	err = regmap_read(data->regmap, LM75_REG_CONF, &status);
 	if (err)