Re: [PATCH] ASoC: meson: aiu: Fix resource leak

[Valerio Setti <vsetti@baylibre.com>]

On 7/7/26 3:24 AM, Ethan Tidmore wrote:
> In snd_soc_register_component() error path, the aiu-formatter is not
> being freed. Instead of returning now goto the err tag so the
> aiu-formatter can properly be freed.
> 
> Fixes: 83b83024cdbfd ("ASoC: meson: aiu: use aiu-formatter-i2s to format I2S output data")
> Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
> ---
>   sound/soc/meson/aiu.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/meson/aiu.c b/sound/soc/meson/aiu.c
> index 64ace4d25d92..d6b644a53f7e 100644
> --- a/sound/soc/meson/aiu.c
> +++ b/sound/soc/meson/aiu.c
> @@ -310,7 +310,7 @@ static int aiu_probe(struct platform_device *pdev)
>   					 ARRAY_SIZE(aiu_cpu_dai_drv));
>   	if (ret) {
>   		dev_err(dev, "Failed to register cpu component\n");
> -		return ret;
> +		goto err;
>   	}
>   
>   	/* Register the hdmi codec control component */

Technically the fix is OK, but I don't think the commit title and 
message are correct. aiu-formatter data is allocated in 
'gx_formatter_create' using 'devm_kzalloc' so, unless I'm missing 
something, the data should be automatically freed when the device is 
removed in case of error.
What 'gx_formatter_free' does is simply clearing widget's private 
pointer (i.e. 'w->priv'). I think that not clearing it should not have 
any bad consequence since the pointer would be overwritten on the next 
probe. However I agree that for consistency reasons it's a good thing to 
clear to do when 'aiu_probe' fails.

So perhaps the title should be rewritten to something like "ASoC: meson: 
aiu: reset widget private data on probe error path"?

-- 
Valerio