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iio: adc: npcm: Convert to platform remove callback returning void 

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230919174931.1417681-18-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Uwe Kleine-König 2023-09-19 19:48:59 +02:00 committed by Jonathan Cameron
parent a72e156f53
commit 5253a5cc77
1 changed files with 2 additions and 4 deletions
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6
drivers/iio/adc/npcm_adc.c
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@ -320,7 +320,7 @@ err_disable_clk:
return ret;
}
static int npcm_adc_remove(struct platform_device *pdev)
static void npcm_adc_remove(struct platform_device *pdev)
{
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
struct npcm_adc *info = iio_priv(indio_dev);
@ -333,13 +333,11 @@ static int npcm_adc_remove(struct platform_device *pdev)
if (!IS_ERR(info->vref))
regulator_disable(info->vref);
clk_disable_unprepare(info->adc_clk);
return 0;
}
static struct platform_driver npcm_adc_driver = {
.probe = npcm_adc_probe,
.remove = npcm_adc_remove,
.remove_new = npcm_adc_remove,
.driver = {
.name = "npcm_adc",
.of_match_table = npcm_adc_match,