1 files changed, 8 insertions, 41 deletions

diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c
index da4327624d45..74f338afcab9 100644
--- a/drivers/iio/dac/mcp4922.c
+++ b/drivers/iio/dac/mcp4922.c
@@ -30,7 +30,6 @@ struct mcp4922_state {
 	struct spi_device *spi;
 	unsigned int value[MCP4922_NUM_CHANNELS];
 	unsigned int vref_mv;
-	struct regulator *vref_reg;
 	u8 mosi[2] __aligned(IIO_DMA_MINALIGN);
 };
 
@@ -132,27 +131,13 @@ static int mcp4922_probe(struct spi_device *spi)
 
 	state = iio_priv(indio_dev);
 	state->spi = spi;
-	state->vref_reg = devm_regulator_get(&spi->dev, "vref");
-	if (IS_ERR(state->vref_reg))
-		return dev_err_probe(&spi->dev, PTR_ERR(state->vref_reg),
-				     "Vref regulator not specified\n");
-
-	ret = regulator_enable(state->vref_reg);
-	if (ret) {
-		dev_err(&spi->dev, "Failed to enable vref regulator: %d\n",
-				ret);
-		return ret;
-	}
 
-	ret = regulator_get_voltage(state->vref_reg);
-	if (ret < 0) {
-		dev_err(&spi->dev, "Failed to read vref regulator: %d\n",
-				ret);
-		goto error_disable_reg;
-	}
+	ret = devm_regulator_get_enable_read_voltage(&spi->dev, "vref");
+	if (ret < 0)
+		return dev_err_probe(&spi->dev, ret, "Failed to get vref voltage\n");
+
 	state->vref_mv = ret / 1000;
 
-	spi_set_drvdata(spi, indio_dev);
 	id = spi_get_device_id(spi);
 	indio_dev->info = &mcp4922_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -163,37 +148,20 @@ static int mcp4922_probe(struct spi_device *spi)
 		indio_dev->num_channels = MCP4922_NUM_CHANNELS;
 	indio_dev->name = id->name;
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		dev_err(&spi->dev, "Failed to register iio device: %d\n",
-				ret);
-		goto error_disable_reg;
-	}
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret)
+		return dev_err_probe(&spi->dev, ret, "Failed to register iio device\n");
 
 	return 0;
-
-error_disable_reg:
-	regulator_disable(state->vref_reg);
-
-	return ret;
 }
 
-static void mcp4922_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct mcp4922_state *state;
-
-	iio_device_unregister(indio_dev);
-	state = iio_priv(indio_dev);
-	regulator_disable(state->vref_reg);
-}
 
 static const struct spi_device_id mcp4922_id[] = {
 	{"mcp4902", ID_MCP4902},
 	{"mcp4912", ID_MCP4912},
 	{"mcp4921", ID_MCP4921},
 	{"mcp4922", ID_MCP4922},
-	{}
+	{ }
 };
 MODULE_DEVICE_TABLE(spi, mcp4922_id);
 
@@ -202,7 +170,6 @@ static struct spi_driver mcp4922_driver = {
 		   .name = "mcp4922",
 		   },
 	.probe = mcp4922_probe,
-	.remove = mcp4922_remove,
 	.id_table = mcp4922_id,
 };
 module_spi_driver(mcp4922_driver);