[PATCH] ASoC: meson: aiu: fix duplicate debugfs directory error

[Geraldo Nascimento]

On Tue, Mar 08, 2022 at 08:00:14PM +0100, Heiner Kallweit wrote:
> On a S905W-based system I get the following error:
> debugfs: Directory 'c1105400.audio-controller' with parent 'P230-Q200' already present!
> 
> Turned out that multiple components having the same name triggers this
> error in soc_init_component_debugfs(). With the patch the error is
> gone and that's the debugfs entries.

Hi Heiner,

Thanks for the patches!

This one has been bugging me for quite some time, I'm glad you took time
to fix it.

I'm sure Martin and the BayLibre folks will soon review both of your patches,
just wanted to thank you.

> 
> /sys/kernel/debug/asoc/P230-Q200/aiu_acodec:c1105400.audio-controller
> /sys/kernel/debug/asoc/P230-Q200/aiu_hdmi:c1105400.audio-controller
> /sys/kernel/debug/asoc/P230-Q200/aiu_cpu:c1105400.audio-controller
> 
> Because debugfs is affected only, this may not be something for stable.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1 at gmail.com>
> ---
>  sound/soc/meson/aiu.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/sound/soc/meson/aiu.c b/sound/soc/meson/aiu.c
> index d299a70db..c1a2aea5f 100644
> --- a/sound/soc/meson/aiu.c
> +++ b/sound/soc/meson/aiu.c
> @@ -68,6 +68,20 @@ int aiu_of_xlate_dai_name(struct snd_soc_component *component,
>  
>  	*dai_name = dai->driver->name;
>  
> +	switch (component_id) {
> +	case AIU_CPU:
> +		component->debugfs_prefix = "aiu_cpu";
> +		break;
> +	case AIU_HDMI:
> +		component->debugfs_prefix = "aiu_hdmi";
> +		break;
> +	case AIU_ACODEC:
> +		component->debugfs_prefix = "aiu_acodec";
> +		break;
> +	default:
> +		break;
> +	}
> +
>  	return 0;
>  }
>  
> -- 
> 2.35.1
>