linux-kernel - Re: [PATCH v1 13/13] soc: mediatek: mtk-svs: keep svs alive even though debug cmd create fail

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Message-ID: <2f4a78f8-9cdd-9e44-20a2-b3bd6abd5cc7@collabora.com>
Date:   Tue, 3 Jan 2023 13:49:36 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Roger Lu <roger.lu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Enric Balletbo Serra <eballetbo@...il.com>,
        Kevin Hilman <khilman@...nel.org>,
        Nicolas Boichat <drinkcat@...gle.com>
Cc:     Fan Chen <fan.chen@...iatek.com>,
        Jia-wei Chang <jia-wei.chang@...iatek.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v1 13/13] soc: mediatek: mtk-svs: keep svs alive even
 though debug cmd create fail

Il 26/12/22 10:42, Roger Lu ha scritto:
> Some projects might not support DEBUG_FS but still needs svs to be
> supported. Therefore, keep svs alive even though debug cmd create fail.
> 
> Signed-off-by: Roger Lu <roger.lu@...iatek.com>
> ---
>   drivers/soc/mediatek/mtk-svs.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
> index af3a12e29e78..c780a115543e 100644
> --- a/drivers/soc/mediatek/mtk-svs.c
> +++ b/drivers/soc/mediatek/mtk-svs.c
> @@ -2390,10 +2390,8 @@ static int svs_probe(struct platform_device *pdev)
>   	}
>   

Instead of ignoring a planned failure, it's sensible to not fail at all:
enclose this call and the svs_create_debug_cmds() function in an ifdef.

#ifdef CONFIG_DEBUG_FS

>   	ret = svs_create_debug_cmds(svsp);
> -	if (ret) {
> +	if (ret)
>   		dev_err(svsp->dev, "svs create debug cmds fail: %d\n", ret);
> -		goto svs_probe_iounmap;
> -	}

#endif

>   
>   	return 0;
>   
> 

Regards,
Angelo