| Message ID | 20231013221945.1489203-14-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoc: Another series to convert to struct platform_driver:remove_new() | expand |
On Sat 14 Oct 2023 at 00:19, Uwe Kleine-König <u.kleine-koenig@pengutronix.de> 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. > > meson_card_remove() returned zero unconditionally. Make it return void > instead and convert all users to struct platform_device::remove_new(). > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Jerome Brunet <jbrunet@baylibre.com> > --- > sound/soc/meson/axg-card.c | 2 +- > sound/soc/meson/gx-card.c | 2 +- > sound/soc/meson/meson-card-utils.c | 4 +--- > sound/soc/meson/meson-card.h | 2 +- > 4 files changed, 4 insertions(+), 6 deletions(-) > > diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c > index 18b16274449e..3180aa4d3a15 100644 > --- a/sound/soc/meson/axg-card.c > +++ b/sound/soc/meson/axg-card.c > @@ -360,7 +360,7 @@ MODULE_DEVICE_TABLE(of, axg_card_of_match); > > static struct platform_driver axg_card_pdrv = { > .probe = meson_card_probe, > - .remove = meson_card_remove, > + .remove_new = meson_card_remove, > .driver = { > .name = "axg-sound-card", > .of_match_table = axg_card_of_match, > diff --git a/sound/soc/meson/gx-card.c b/sound/soc/meson/gx-card.c > index 01beac1d927f..f1539e542638 100644 > --- a/sound/soc/meson/gx-card.c > +++ b/sound/soc/meson/gx-card.c > @@ -130,7 +130,7 @@ MODULE_DEVICE_TABLE(of, gx_card_of_match); > > static struct platform_driver gx_card_pdrv = { > .probe = meson_card_probe, > - .remove = meson_card_remove, > + .remove_new = meson_card_remove, > .driver = { > .name = "gx-sound-card", > .of_match_table = gx_card_of_match, > diff --git a/sound/soc/meson/meson-card-utils.c b/sound/soc/meson/meson-card-utils.c > index c81099218597..ed6c7e2f609c 100644 > --- a/sound/soc/meson/meson-card-utils.c > +++ b/sound/soc/meson/meson-card-utils.c > @@ -327,13 +327,11 @@ int meson_card_probe(struct platform_device *pdev) > } > EXPORT_SYMBOL_GPL(meson_card_probe); > > -int meson_card_remove(struct platform_device *pdev) > +void meson_card_remove(struct platform_device *pdev) > { > struct meson_card *priv = platform_get_drvdata(pdev); > > meson_card_clean_references(priv); > - > - return 0; > } > EXPORT_SYMBOL_GPL(meson_card_remove); > > diff --git a/sound/soc/meson/meson-card.h b/sound/soc/meson/meson-card.h > index a5374324a189..a0d693e4f460 100644 > --- a/sound/soc/meson/meson-card.h > +++ b/sound/soc/meson/meson-card.h > @@ -49,6 +49,6 @@ int meson_card_set_fe_link(struct snd_soc_card *card, > bool is_playback); > > int meson_card_probe(struct platform_device *pdev); > -int meson_card_remove(struct platform_device *pdev); > +void meson_card_remove(struct platform_device *pdev); > > #endif /* _MESON_SND_CARD_H */
diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c index 18b16274449e..3180aa4d3a15 100644 --- a/sound/soc/meson/axg-card.c +++ b/sound/soc/meson/axg-card.c @@ -360,7 +360,7 @@ MODULE_DEVICE_TABLE(of, axg_card_of_match); static struct platform_driver axg_card_pdrv = { .probe = meson_card_probe, - .remove = meson_card_remove, + .remove_new = meson_card_remove, .driver = { .name = "axg-sound-card", .of_match_table = axg_card_of_match, diff --git a/sound/soc/meson/gx-card.c b/sound/soc/meson/gx-card.c index 01beac1d927f..f1539e542638 100644 --- a/sound/soc/meson/gx-card.c +++ b/sound/soc/meson/gx-card.c @@ -130,7 +130,7 @@ MODULE_DEVICE_TABLE(of, gx_card_of_match); static struct platform_driver gx_card_pdrv = { .probe = meson_card_probe, - .remove = meson_card_remove, + .remove_new = meson_card_remove, .driver = { .name = "gx-sound-card", .of_match_table = gx_card_of_match, diff --git a/sound/soc/meson/meson-card-utils.c b/sound/soc/meson/meson-card-utils.c index c81099218597..ed6c7e2f609c 100644 --- a/sound/soc/meson/meson-card-utils.c +++ b/sound/soc/meson/meson-card-utils.c @@ -327,13 +327,11 @@ int meson_card_probe(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(meson_card_probe); -int meson_card_remove(struct platform_device *pdev) +void meson_card_remove(struct platform_device *pdev) { struct meson_card *priv = platform_get_drvdata(pdev); meson_card_clean_references(priv); - - return 0; } EXPORT_SYMBOL_GPL(meson_card_remove); diff --git a/sound/soc/meson/meson-card.h b/sound/soc/meson/meson-card.h index a5374324a189..a0d693e4f460 100644 --- a/sound/soc/meson/meson-card.h +++ b/sound/soc/meson/meson-card.h @@ -49,6 +49,6 @@ int meson_card_set_fe_link(struct snd_soc_card *card, bool is_playback); int meson_card_probe(struct platform_device *pdev); -int meson_card_remove(struct platform_device *pdev); +void meson_card_remove(struct platform_device *pdev); #endif /* _MESON_SND_CARD_H */
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. meson_card_remove() returned zero unconditionally. Make it return void instead and convert all users to struct platform_device::remove_new(). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- sound/soc/meson/axg-card.c | 2 +- sound/soc/meson/gx-card.c | 2 +- sound/soc/meson/meson-card-utils.c | 4 +--- sound/soc/meson/meson-card.h | 2 +- 4 files changed, 4 insertions(+), 6 deletions(-)