From cd918e75b42e24bac86d1b33118b936cff3bb3bd Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 19 Sep 2023 19:49:04 +0200 Subject: [PATCH] iio: adc: stm32-dfsdm-adc: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Link: https://lore.kernel.org/r/20230919174931.1417681-23-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-dfsdm-adc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c index b5cc43d12b6f9..ca08ae3108b22 100644 --- a/drivers/iio/adc/stm32-dfsdm-adc.c +++ b/drivers/iio/adc/stm32-dfsdm-adc.c @@ -1620,7 +1620,7 @@ err_cleanup: return ret; } -static int stm32_dfsdm_adc_remove(struct platform_device *pdev) +static void stm32_dfsdm_adc_remove(struct platform_device *pdev) { struct iio_dev *indio_dev = platform_get_drvdata(pdev); struct stm32_dfsdm_adc *adc = iio_priv(indio_dev); @@ -1629,8 +1629,6 @@ static int stm32_dfsdm_adc_remove(struct platform_device *pdev) of_platform_depopulate(&pdev->dev); iio_device_unregister(indio_dev); stm32_dfsdm_dma_release(indio_dev); - - return 0; } static int stm32_dfsdm_adc_suspend(struct device *dev) @@ -1677,7 +1675,7 @@ static struct platform_driver stm32_dfsdm_adc_driver = { .pm = pm_sleep_ptr(&stm32_dfsdm_adc_pm_ops), }, .probe = stm32_dfsdm_adc_probe, - .remove = stm32_dfsdm_adc_remove, + .remove_new = stm32_dfsdm_adc_remove, }; module_platform_driver(stm32_dfsdm_adc_driver); -- 2.30.2