linux-kernel - Re: [PATCH v2 4/6] memory: mtk-smi: Fix the return value for clk_bulk_prepare

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Message-ID: <18d7e049adc69f4b7f0ecfdf8520a02bd6e17149.camel@mediatek.com>
Date:   Thu, 13 Jan 2022 14:05:59 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        "Joerg Roedel" <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        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>
Subject: Re: [PATCH v2 4/6] memory: mtk-smi: Fix the return value for
 clk_bulk_prepare_enable

On Tue, 2022-01-11 at 10:10 +0100, AngeloGioacchino Del Regno wrote:
> Il 11/01/22 07:39, Yong Wu ha scritto:
> > The successful return value for clk_bulk_prepare_enable is 0,
> > rather than
> > "< 0". Fix this.
> > 
> 
> Hello! Thanks for this commit!
> However, there are a few comments...
> 
> This description is a bit confusing, please reword it, something
> like...
> 
> "Function clk_bulk_prepare_enable() returns 0 for success or a
> negative
> number for error. Fix this code style issue."

Thanks for your quickly reviewing.

I will use this in next version and remove the "Fixes" tag.

> 
> In any case, you're not fixing any bad logic issue here, as the
> function
> will never return anything > 0.
> 
> What you're fixing is a common pattern usage issue, so the Fixes tag
> can be
> removed since it's not really useful to schedule this commit for
> backport
> over older stable versions.
> 
> 
> After the requested changes:
> 
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>
> 
> > Fixes: 0e14917c57f9 ("memory: mtk-smi: Use clk_bulk clock ops")
> > Signed-off-by: Yong Wu <yong.wu@...iatek.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 */
> > 
> 
>