diff mbox series

[031/173] ASoC: atmel: sam9g20_wm8731: Convert to platform remove callback returning void

Message ID 20230315150745.67084-32-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Commit a186762b817329d6d55fb94419b534cb06aca3a7
Headers show
Series ALSA/ASoC: Convert to platform remove callback returning void | expand

Commit Message

Uwe Kleine-König March 15, 2023, 3:05 p.m. UTC
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/sam9g20_wm8731.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Claudiu.Beznea--- via Alsa-devel March 16, 2023, 11:10 a.m. UTC | #1
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/sam9g20_wm8731.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
> index 785b9d01d8af..baf38964b491 100644
> --- a/sound/soc/atmel/sam9g20_wm8731.c
> +++ b/sound/soc/atmel/sam9g20_wm8731.c
> @@ -186,14 +186,12 @@ static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
>         return ret;
>  }
> 
> -static int at91sam9g20ek_audio_remove(struct platform_device *pdev)
> +static void at91sam9g20ek_audio_remove(struct platform_device *pdev)
>  {
>         struct snd_soc_card *card = platform_get_drvdata(pdev);
> 
>         snd_soc_unregister_card(card);
>         atmel_ssc_put_audio(0);
> -
> -       return 0;
>  }
> 
>  #ifdef CONFIG_OF
> @@ -210,7 +208,7 @@ static struct platform_driver at91sam9g20ek_audio_driver = {
>                 .of_match_table = of_match_ptr(at91sam9g20ek_wm8731_dt_ids),
>         },
>         .probe  = at91sam9g20ek_audio_probe,
> -       .remove = at91sam9g20ek_audio_remove,
> +       .remove_new = at91sam9g20ek_audio_remove,
>  };
> 
>  module_platform_driver(at91sam9g20ek_audio_driver);
> --
> 2.39.2
>
diff mbox series

Patch

diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
index 785b9d01d8af..baf38964b491 100644
--- a/sound/soc/atmel/sam9g20_wm8731.c
+++ b/sound/soc/atmel/sam9g20_wm8731.c
@@ -186,14 +186,12 @@  static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int at91sam9g20ek_audio_remove(struct platform_device *pdev)
+static void at91sam9g20ek_audio_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);
 
 	snd_soc_unregister_card(card);
 	atmel_ssc_put_audio(0);
-
-	return 0;
 }
 
 #ifdef CONFIG_OF
@@ -210,7 +208,7 @@  static struct platform_driver at91sam9g20ek_audio_driver = {
 		.of_match_table = of_match_ptr(at91sam9g20ek_wm8731_dt_ids),
 	},
 	.probe	= at91sam9g20ek_audio_probe,
-	.remove	= at91sam9g20ek_audio_remove,
+	.remove_new = at91sam9g20ek_audio_remove,
 };
 
 module_platform_driver(at91sam9g20ek_audio_driver);