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iio: adc: axp288_adc: convert probe to full device-managed 

This change converts the probe of this driver to use device-managed
functions only, which means that the remove hook can be removed.
The remove hook has only 2 calls to iio_device_unregister() and
iio_map_array_unregister(). Both these can now be done via devm register
functions, now that there's also a devm_iio_map_array_register() function.

The platform_set_drvdata() can also be removed now.

This change also removes the error print for when the iio_device_register()
call fails. This isn't required now.

Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210903072917.45769-4-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2021-09-03 10:29:15 +03:00 committed by Jonathan Cameron
parent 7a29120c6e
commit 298fdedc4a
1 changed files with 4 additions and 24 deletions
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28
drivers/iio/adc/axp288_adc.c
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@ -259,7 +259,7 @@ static int axp288_adc_probe(struct platform_device *pdev)
info->irq = platform_get_irq(pdev, 0);
if (info->irq < 0)
return info->irq;
platform_set_drvdata(pdev, indio_dev);
info->regmap = axp20x->regmap;
/*
* Set ADC to enabled state at all time, including system suspend.
@ -276,31 +276,12 @@ static int axp288_adc_probe(struct platform_device *pdev)
indio_dev->num_channels = ARRAY_SIZE(axp288_adc_channels);
indio_dev->info = &axp288_adc_iio_info;
indio_dev->modes = INDIO_DIRECT_MODE;
ret = iio_map_array_register(indio_dev, axp288_adc_default_maps);
ret = devm_iio_map_array_register(&pdev->dev, indio_dev, axp288_adc_default_maps);
if (ret < 0)
return ret;
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&pdev->dev, "unable to register iio device\n");
goto err_array_unregister;
}
return 0;
err_array_unregister:
iio_map_array_unregister(indio_dev);
return ret;
}
static int axp288_adc_remove(struct platform_device *pdev)
{
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
iio_device_unregister(indio_dev);
iio_map_array_unregister(indio_dev);
return 0;
return devm_iio_device_register(&pdev->dev, indio_dev);
}
static const struct platform_device_id axp288_adc_id_table[] = {
@ -310,7 +291,6 @@ static const struct platform_device_id axp288_adc_id_table[] = {
static struct platform_driver axp288_adc_driver = {
.probe = axp288_adc_probe,
.remove = axp288_adc_remove,
.id_table = axp288_adc_id_table,
.driver = {
.name = "axp288_adc",