linux-kernel - Re: [PATCH v3 5/7] memory: mtk-smi: Fix the return value for clk_bulk_prepare

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Message-ID: <792f1119b9c848a01e8b8ddd196a1db7acc1f0ae.camel@mediatek.com>
Date:   Mon, 17 Jan 2022 20:25:28 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Joerg Roedel <joro@...tes.org>,
        Tomasz Figa <tfiga@...omium.org>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <youlin.pei@...iatek.com>,
        <anan.sun@...iatek.com>, <lc.kan@...iatek.com>,
        <yi.kuo@...iatek.com>, <anthony.huang@...iatek.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH v3 5/7] memory: mtk-smi: Fix the return value for
 clk_bulk_prepare_enable

On Mon, 2022-01-17 at 13:01 +0100, Krzysztof Kozlowski wrote:
> On 13/01/2022 12:10, Yong Wu wrote:
> > Function clk_bulk_prepare_enable() returns 0 for success or a
> > negative
> > number for error. Fix this code style issue.
> 
> The message does not really make sense. If negative is returned, then
> the check (ret < 0) was correct.
> 
> I guess you wanted to say that common code style is to check for any
> non-zero return value, just like it's implementation in clk.h does.
> 
> I'll adjust the commit msg when applying.

Thanks for the help.

> 
> > 
> > Signed-off-by: Yong Wu <yong.wu@...iatek.com>
> > Reviewed-by: AngeloGioacchino Del Regno <
> > angelogioacchino.delregno@...labora.com>
> > ---
> >  drivers/memory/mtk-smi.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
> > index b883dcc0bbfa..e7b1a22b12ea 100644
> > --- a/drivers/memory/mtk-smi.c
> > +++ b/drivers/memory/mtk-smi.c
> > @@ -480,7 +480,7 @@ static int __maybe_unused
> > mtk_smi_larb_resume(struct device *dev)
> >  	int ret;
> >  
> >  	ret = clk_bulk_prepare_enable(larb->smi.clk_num, larb-
> > >smi.clks);
> > -	if (ret < 0)
> > +	if (ret)
> >  		return ret;
> >  
> >  	/* Configure the basic setting for this larb */
> 
> Best regards,
> Krzysztof