diff mbox series

[041/173] ASoC: cirrus: ep93xx-i2s: Convert to platform remove callback returning void

Message ID 20230315150745.67084-42-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Commit 4b1bb8fd7ba5ddcf54cfc9e5568236a734e07f6e
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/cirrus/ep93xx-i2s.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Alexander Sverdlin March 15, 2023, 4:37 p.m. UTC | #1
Hi Uwe,

On Wed, 2023-03-15 at 16:05 +0100, 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

LGTM,
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>

> >
> ---
>  sound/soc/cirrus/ep93xx-i2s.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/sound/soc/cirrus/ep93xx-i2s.c b/sound/soc/cirrus/ep93xx-i2s.c
> index 70840f27d4a7..9760453d9d79 100644
> --- a/sound/soc/cirrus/ep93xx-i2s.c
> +++ b/sound/soc/cirrus/ep93xx-i2s.c
> @@ -495,19 +495,18 @@ static int ep93xx_i2s_probe(struct platform_device *pdev)
>         return err;
>  }
>  
> -static int ep93xx_i2s_remove(struct platform_device *pdev)
> +static void ep93xx_i2s_remove(struct platform_device *pdev)
>  {
>         struct ep93xx_i2s_info *info = dev_get_drvdata(&pdev->dev);
>  
>         clk_put(info->lrclk);
>         clk_put(info->sclk);
>         clk_put(info->mclk);
> -       return 0;
>  }
>  
>  static struct platform_driver ep93xx_i2s_driver = {
>         .probe  = ep93xx_i2s_probe,
> -       .remove = ep93xx_i2s_remove,
> +       .remove_new = ep93xx_i2s_remove,
>         .driver = {
>                 .name   = "ep93xx-i2s",
>         },
diff mbox series

Patch

diff --git a/sound/soc/cirrus/ep93xx-i2s.c b/sound/soc/cirrus/ep93xx-i2s.c
index 70840f27d4a7..9760453d9d79 100644
--- a/sound/soc/cirrus/ep93xx-i2s.c
+++ b/sound/soc/cirrus/ep93xx-i2s.c
@@ -495,19 +495,18 @@  static int ep93xx_i2s_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int ep93xx_i2s_remove(struct platform_device *pdev)
+static void ep93xx_i2s_remove(struct platform_device *pdev)
 {
 	struct ep93xx_i2s_info *info = dev_get_drvdata(&pdev->dev);
 
 	clk_put(info->lrclk);
 	clk_put(info->sclk);
 	clk_put(info->mclk);
-	return 0;
 }
 
 static struct platform_driver ep93xx_i2s_driver = {
 	.probe	= ep93xx_i2s_probe,
-	.remove	= ep93xx_i2s_remove,
+	.remove_new = ep93xx_i2s_remove,
 	.driver	= {
 		.name	= "ep93xx-i2s",
 	},