linux-kernel - Re: [PATCH] soc: mediatek: pm-domains: Don't print an error if child domain is deferred

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Date:   Thu, 14 Jan 2021 12:00:18 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Collabora Kernel ML <kernel@...labora.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Nicolas Boichat <drinkcat@...omium.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH] soc: mediatek: pm-domains: Don't print an error if child
 domain is deferred

On Thu, Jan 14, 2021 at 5:30 AM Enric Balletbo i Serra
<enric.balletbo@...labora.com> wrote:
>
> Child domains can be deferred by the core because one of its resources
> is not available yet, in such case, it will print an error, but
> later it will succeed to probe. Fix that using the dev_err_probe()
> function so it only prints an error on a real error.
>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Reviewed-by: Hsin-Yi Wang <hsinyi@...omium.org>
> ---
>
>  drivers/soc/mediatek/mtk-pm-domains.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c
> index ae255aa7b1a9..8055fb019ba6 100644
> --- a/drivers/soc/mediatek/mtk-pm-domains.c
> +++ b/drivers/soc/mediatek/mtk-pm-domains.c
> @@ -480,8 +480,8 @@ static int scpsys_add_subdomain(struct scpsys *scpsys, struct device_node *paren
>
>                 child_pd = scpsys_add_one_domain(scpsys, child);
>                 if (IS_ERR(child_pd)) {
> -                       ret = PTR_ERR(child_pd);
> -                       dev_err(scpsys->dev, "%pOF: failed to get child domain id\n", child);
> +                       dev_err_probe(scpsys->dev, PTR_ERR(child_pd),
> +                                     "%pOF: failed to get child domain id\n", child);
>                         goto err_put_node;
>                 }
>
> --
> 2.29.2
>