linux-kernel - Re: [PATCH] mmc: atmel-mci: simplify if-if to if-else

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Message-ID: <CAPDyKFp38EKC88wGZyYm3agvY9zC2M6-qAgMqmOHne0kkDAhCg@mail.gmail.com>
Date:   Wed, 27 Apr 2022 00:43:42 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Wan Jiabing <wanjiabing@...o.com>
Cc:     Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kael_w@...h.net
Subject: Re: [PATCH] mmc: atmel-mci: simplify if-if to if-else

On Tue, 26 Apr 2022 at 17:06, Wan Jiabing <wanjiabing@...o.com> wrote:
>
> On Tue, Apr 26, 2022 at 03:53:09PM +0200, Ulf Hansson wrote:
> > On Sun, 24 Apr 2022 at 11:04, Wan Jiabing <wanjiabing@...o.com> wrote:
> > >
> > > Use if and else instead of if(A) and if (!A).
> > >
> > > Signed-off-by: Wan Jiabing <wanjiabing@...o.com>
> > > ---
> > >  drivers/mmc/host/atmel-mci.c | 3 +--
> > >  1 file changed, 1 insertion(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> > > index 807177c953f3..98893ccad4bd 100644
> > > --- a/drivers/mmc/host/atmel-mci.c
> > > +++ b/drivers/mmc/host/atmel-mci.c
> > > @@ -1125,8 +1125,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
> > >         chan = host->dma.chan;
> > >         if (chan)
> > >                 host->data_chan = chan;
> > > -
> > > -       if (!chan)
> > > +       else
> > >                 return -ENODEV;
> >
> > To make a slightly better improvement of the code, I suggest we add an
> > early bail out point in the atmci_prepare_data_dma() function. Like
> > below:
> >
> > if (!host->dma.chan)
> >      return -ENODEV;
> >
> > [...]
> >
> > Kind regards
> > Uffe
>
> OK
>
> How about this new patch?

Please post a new version in plain text, not as an attachment.

Kind regards
Uffe