| Message ID | 20231013221945.1489203-13-u.kleine-koenig@pengutronix.de |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | ASoc: Another series to convert to struct platform_driver:remove_new() | expand |
On Sat, 14 Oct 2023 00:19:50 +0200 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. > > simple_util_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: Herve Codina <herve.codina@bootlin.com> Best regards, Hervé
diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h index 18e7a0b89395..e5da10b4c43b 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -188,7 +188,7 @@ int simple_util_init_aux_jacks(struct simple_util_priv *priv, char *prefix); int simple_util_init_priv(struct simple_util_priv *priv, struct link_info *li); -int simple_util_remove(struct platform_device *pdev); +void simple_util_remove(struct platform_device *pdev); int graph_util_card_probe(struct snd_soc_card *card); int graph_util_is_ports0(struct device_node *port); diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 704f32bda24d..76a9f1e8cdd5 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -644,7 +644,7 @@ static struct platform_driver graph_card = { .of_match_table = graph_of_match, }, .probe = graph_probe, - .remove = simple_util_remove, + .remove_new = simple_util_remove, }; module_platform_driver(graph_card); diff --git a/sound/soc/generic/audio-graph-card2-custom-sample.c b/sound/soc/generic/audio-graph-card2-custom-sample.c index 4dc65e249ecb..1b6ccd2de964 100644 --- a/sound/soc/generic/audio-graph-card2-custom-sample.c +++ b/sound/soc/generic/audio-graph-card2-custom-sample.c @@ -176,7 +176,7 @@ static struct platform_driver custom_card = { .of_match_table = custom_of_match, }, .probe = custom_probe, - .remove = simple_util_remove, + .remove_new = simple_util_remove, }; module_platform_driver(custom_card); diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c index 1344e1adfc67..7146611df730 100644 --- a/sound/soc/generic/audio-graph-card2.c +++ b/sound/soc/generic/audio-graph-card2.c @@ -1224,7 +1224,7 @@ static struct platform_driver graph_card = { .of_match_table = graph_of_match, }, .probe = graph_probe, - .remove = simple_util_remove, + .remove_new = simple_util_remove, }; module_platform_driver(graph_card); diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index 11f186ea662a..cfa70a56ff0f 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -958,13 +958,11 @@ int simple_util_init_priv(struct simple_util_priv *priv, } EXPORT_SYMBOL_GPL(simple_util_init_priv); -int simple_util_remove(struct platform_device *pdev) +void simple_util_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); simple_util_clean_reference(card); - - return 0; } EXPORT_SYMBOL_GPL(simple_util_remove); diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index 048357ae7ae6..9c79ff6a568f 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -827,7 +827,7 @@ static struct platform_driver simple_card = { .of_match_table = simple_of_match, }, .probe = simple_probe, - .remove = simple_util_remove, + .remove_new = simple_util_remove, }; module_platform_driver(simple_card); diff --git a/sound/soc/tegra/tegra_audio_graph_card.c b/sound/soc/tegra/tegra_audio_graph_card.c index 8b48813c2c59..feba9d42bbc5 100644 --- a/sound/soc/tegra/tegra_audio_graph_card.c +++ b/sound/soc/tegra/tegra_audio_graph_card.c @@ -248,7 +248,7 @@ static struct platform_driver tegra_audio_graph_card = { .of_match_table = graph_of_tegra_match, }, .probe = tegra_audio_graph_probe, - .remove = simple_util_remove, + .remove_new = simple_util_remove, }; module_platform_driver(tegra_audio_graph_card);
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. simple_util_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> --- include/sound/simple_card_utils.h | 2 +- sound/soc/generic/audio-graph-card.c | 2 +- sound/soc/generic/audio-graph-card2-custom-sample.c | 2 +- sound/soc/generic/audio-graph-card2.c | 2 +- sound/soc/generic/simple-card-utils.c | 4 +--- sound/soc/generic/simple-card.c | 2 +- sound/soc/tegra/tegra_audio_graph_card.c | 2 +- 7 files changed, 7 insertions(+), 9 deletions(-)