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iio: adc: max1118: Use devm_ managed functions for all of probe 

This simplifies error handling and allows us to drop the remove
function entirely.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-4-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2021-05-16 18:25:15 +01:00
parent 7169a78e39
commit 30b527dd4f
1 changed files with 15 additions and 31 deletions
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46
drivers/iio/adc/max1118.c
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@ -201,6 +201,11 @@ out:
return IRQ_HANDLED;
}
static void max1118_reg_disable(void *reg)
{
regulator_disable(reg);
}
static int max1118_probe(struct spi_device *spi)
{
struct iio_dev *indio_dev;
@ -225,6 +230,12 @@ static int max1118_probe(struct spi_device *spi)
ret = regulator_enable(adc->reg);
if (ret)
return ret;
ret = devm_add_action_or_reset(&spi->dev, max1118_reg_disable,
adc->reg);
if (ret)
return ret;
}
spi_set_drvdata(spi, indio_dev);
@ -243,38 +254,12 @@ static int max1118_probe(struct spi_device *spi)
*/
max1118_read(spi, 0);
ret = iio_triggered_buffer_setup(indio_dev, NULL,
max1118_trigger_handler, NULL);
ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
max1118_trigger_handler, NULL);
if (ret)
goto err_reg_disable;
return ret;
ret = iio_device_register(indio_dev);
if (ret)
goto err_buffer_cleanup;
return 0;
err_buffer_cleanup:
iio_triggered_buffer_cleanup(indio_dev);
err_reg_disable:
if (id->driver_data == max1118)
regulator_disable(adc->reg);
return ret;
}
static int max1118_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct max1118 *adc = iio_priv(indio_dev);
const struct spi_device_id *id = spi_get_device_id(spi);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
if (id->driver_data == max1118)
return regulator_disable(adc->reg);
return 0;
return devm_iio_device_register(&spi->dev, indio_dev);
}
static const struct spi_device_id max1118_id[] = {
@ -299,7 +284,6 @@ static struct spi_driver max1118_spi_driver = {
.of_match_table = max1118_dt_ids,
},
.probe = max1118_probe,
.remove = max1118_remove,
.id_table = max1118_id,
};
module_spi_driver(max1118_spi_driver);