linux-kernel - Re: [PATCH] power: supply: mt6370: Fix missing error code in mt6370_chg_toggle

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Message-ID: <1092ffb3-0238-4dc0-baf3-344a653fca3f@kadam.mountain>
Date:   Thu, 7 Sep 2023 14:08:17 +0300
From:   Dan Carpenter <dan.carpenter@...aro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>,
        Sebastian Reichel <sre@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        ChiaEn Wu <chiaen_wu@...htek.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        kernel-janitors@...r.kernel.org, error27@...il.com
Subject: Re: [PATCH] power: supply: mt6370: Fix missing error code in
 mt6370_chg_toggle_cfo()

On Thu, Sep 07, 2023 at 12:43:12PM +0200, AngeloGioacchino Del Regno wrote:
> Il 06/09/23 10:48, Harshit Mogalapalli ha scritto:
> > When mt6370_chg_field_get() suceeds, ret is set to zero and returning
> > zero when flash led is still in strobe mode looks incorrect.
> > 
> > Fixes: 233cb8a47d65 ("power: supply: mt6370: Add MediaTek MT6370 charger driver")
> > Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
> > ---
> > This is based on static analysis with smatch, only compile tested.
> > ---
> >   drivers/power/supply/mt6370-charger.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/power/supply/mt6370-charger.c b/drivers/power/supply/mt6370-charger.c
> > index f27dae5043f5..a9641bd3d8cf 100644
> > --- a/drivers/power/supply/mt6370-charger.c
> > +++ b/drivers/power/supply/mt6370-charger.c
> > @@ -324,7 +324,7 @@ static int mt6370_chg_toggle_cfo(struct mt6370_priv *priv)
> >   	if (fl_strobe) {
> >   		dev_err(priv->dev, "Flash led is still in strobe mode\n");
> > -		return ret;
> > +		return -EINVAL;
> 
> I think that returning 0 here was intentional, but I agree on a return ret
> here being both confusing and wrong.

If it's a success path then probably we should remove the dev_err().

regards,
dan carpenter