2023-03-15 at 16:05, Uwe Kleine-König wrote: > 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 (mostly) ignored > 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. > > 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> Acked-by: Peter Rosin <peda@axentia.se> Cheers, Peter
On 15.03.2023 17:05, Uwe Kleine-König wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > 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 (mostly) ignored > 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. > > 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> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> > --- > sound/soc/atmel/tse850-pcm5142.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/sound/soc/atmel/tse850-pcm5142.c b/sound/soc/atmel/tse850-pcm5142.c > index ef537de7719c..efead272d92b 100644 > --- a/sound/soc/atmel/tse850-pcm5142.c > +++ b/sound/soc/atmel/tse850-pcm5142.c > @@ -412,15 +412,13 @@ static int tse850_probe(struct platform_device *pdev) > return ret; > } > > -static int tse850_remove(struct platform_device *pdev) > +static void tse850_remove(struct platform_device *pdev) > { > struct snd_soc_card *card = platform_get_drvdata(pdev); > struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card); > > snd_soc_unregister_card(card); > regulator_disable(tse850->ana); > - > - return 0; > } > > static const struct of_device_id tse850_dt_ids[] = { > @@ -435,7 +433,7 @@ static struct platform_driver tse850_driver = { > .of_match_table = of_match_ptr(tse850_dt_ids), > }, > .probe = tse850_probe, > - .remove = tse850_remove, > + .remove_new = tse850_remove, > }; > > module_platform_driver(tse850_driver); > -- > 2.39.2 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/sound/soc/atmel/tse850-pcm5142.c b/sound/soc/atmel/tse850-pcm5142.c index ef537de7719c..efead272d92b 100644 --- a/sound/soc/atmel/tse850-pcm5142.c +++ b/sound/soc/atmel/tse850-pcm5142.c @@ -412,15 +412,13 @@ static int tse850_probe(struct platform_device *pdev) return ret; } -static int tse850_remove(struct platform_device *pdev) +static void tse850_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card); snd_soc_unregister_card(card); regulator_disable(tse850->ana); - - return 0; } static const struct of_device_id tse850_dt_ids[] = { @@ -435,7 +433,7 @@ static struct platform_driver tse850_driver = { .of_match_table = of_match_ptr(tse850_dt_ids), }, .probe = tse850_probe, - .remove = tse850_remove, + .remove_new = tse850_remove, }; module_platform_driver(tse850_driver);
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 (mostly) ignored 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. 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> --- sound/soc/atmel/tse850-pcm5142.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)