staging: iio: ad9834: Use devm_regulator_get_enable()

The regulators are only enabled at probe(), hence replace the boilerplate
code by making use of devm_regulator_get_enable() helper.

Signed-off-by: Saalim Quadri <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>

Author: danascape

drivers/staging/iio/frequency/ad9834.c

@@ -387,33 +387,15 @@ static const struct iio_info ad9833_info = {
 	.attrs = &ad9833_attribute_group,
 };
 
-static void ad9834_disable_reg(void *data)
-{
-	struct regulator *reg = data;
-
-	regulator_disable(reg);
-}
-
 static int ad9834_probe(struct spi_device *spi)
 {
 	struct ad9834_state *st;
 	struct iio_dev *indio_dev;
-	struct regulator *reg;
 	int ret;
 
-	reg = devm_regulator_get(&spi->dev, "avdd");
-	if (IS_ERR(reg))
-		return PTR_ERR(reg);
-
-	ret = regulator_enable(reg);
-	if (ret) {
-		dev_err(&spi->dev, "Failed to enable specified AVDD supply\n");
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(&spi->dev, ad9834_disable_reg, reg);
+	ret = devm_regulator_get_enable(&spi->dev, "avdd");
 	if (ret)
-		return ret;
+		return dev_err_probe(&spi->dev, ret, "Failed to enable specified AVDD supply\n");
 
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
 	if (!indio_dev) {