iio: adc: ad7476: Use devm_* APIs

devm_* APIs are device managed and make code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index 2e98bef4af673fd6ebadcac12d7ef56fe0c0d226..6d2b1d8d1a1f001dbec29f88633ba90fffe15e90 100644 (file)
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -213,24 +213,21 @@ static int ad7476_probe(struct spi_device *spi)
        struct iio_dev *indio_dev;
        int ret;
 
-       indio_dev = iio_device_alloc(sizeof(*st));
-       if (indio_dev == NULL) {
-               ret = -ENOMEM;
-               goto error_ret;
-       }
+       indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+       if (!indio_dev)
+               return -ENOMEM;
+
        st = iio_priv(indio_dev);
        st->chip_info =
                &ad7476_chip_info_tbl[spi_get_device_id(spi)->driver_data];
 
-       st->reg = regulator_get(&spi->dev, "vcc");
-       if (IS_ERR(st->reg)) {
-               ret = PTR_ERR(st->reg);
-               goto error_free_dev;
-       }
+       st->reg = devm_regulator_get(&spi->dev, "vcc");
+       if (IS_ERR(st->reg))
+               return PTR_ERR(st->reg);
 
        ret = regulator_enable(st->reg);
        if (ret)
-               goto error_put_reg;
+               return ret;
 
        spi_set_drvdata(spi, indio_dev);
 
@@ -268,12 +265,7 @@ error_ring_unregister:
        iio_triggered_buffer_cleanup(indio_dev);
 error_disable_reg:
        regulator_disable(st->reg);
-error_put_reg:
-       regulator_put(st->reg);
-error_free_dev:
-       iio_device_free(indio_dev);
 
-error_ret:
        return ret;
 }
 
@@ -285,8 +277,6 @@ static int ad7476_remove(struct spi_device *spi)
        iio_device_unregister(indio_dev);
        iio_triggered_buffer_cleanup(indio_dev);
        regulator_disable(st->reg);
-       regulator_put(st->reg);
-       iio_device_free(indio_dev);
 
        return 0;
 }