linux-kernel - Re: [RFC PATCH 03/11] devfreq: exynos-bus: Change goto-based logic to if-else logic

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Date:   Thu, 25 Jul 2019 22:02:14 +0900
From:   Chanwoo Choi <cwchoi00@...il.com>
To:     Artur Świgoń <a.swigon@...tner.samsung.com>
Cc:     devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>, inki.dae@...sung.com,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        georgi.djakov@...aro.org,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [RFC PATCH 03/11] devfreq: exynos-bus: Change goto-based logic to
 if-else logic

2019년 7월 25일 (목) 오후 9:56, Chanwoo Choi <cwchoi00@...il.com>님이 작성:
>
> 2019년 7월 24일 (수) 오전 8:08, Artur Świgoń <a.swigon@...tner.samsung.com>님이 작성:
> >
> > This patch improves code readability by changing the following construct:
> >
> > >    if (cond)
> > >        goto passive;
> > >    foo();
> > >    goto out;
> > >passive:
> > >    bar();
> > >out:
> >
> > into this:
> >
> > >    if (cond)
> > >        bar();
> > >    else
> > >        foo();
> >
> > Signed-off-by: Artur Świgoń <a.swigon@...tner.samsung.com>
> > ---
> >  drivers/devfreq/exynos-bus.c | 24 +++++++++---------------
> >  1 file changed, 9 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> > index cf6f6cbd0f55..4bb83b945bf7 100644
> > --- a/drivers/devfreq/exynos-bus.c
> > +++ b/drivers/devfreq/exynos-bus.c
> > @@ -505,25 +505,19 @@ static int exynos_bus_probe(struct platform_device *pdev)
> >         node = of_parse_phandle(dev->of_node, "devfreq", 0);
> >         if (node) {
> >                 of_node_put(node);
> > -               goto passive;
> > +               ret = exynos_bus_profile_init_passive(bus, profile);
> > +               if (ret < 0)
> > +                       goto err;
> >         } else {
> >                 ret = exynos_bus_parent_parse_of(np, bus);
> > +               if (ret < 0)
> > +                       goto err;
> > +
> > +               ret = exynos_bus_profile_init(bus, profile);
> > +               if (ret < 0)
> > +                       goto err;
> >         }
> >
> > -       if (ret < 0)
> > -               goto err;
> > -
> > -       ret = exynos_bus_profile_init(bus, profile);
> > -       if (ret < 0)
> > -               goto err;
> > -
> > -       goto out;
> > -passive:
> > -       ret = exynos_bus_profile_init_passive(bus, profile);
> > -       if (ret < 0)
> > -               goto err;
> > -
> > -out:
> >         max_state = bus->devfreq->profile->max_state;
> >         min_freq = (bus->devfreq->profile->freq_table[0] / 1000);
> >         max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000);
> > --
> > 2.17.1
> >
>
> It seems more simple than before.
> Instead, please merge patch1/2/3 to one patch. and drop the patch4.

But, I think that you better to drop the cleanup patch from this series
because the series[1] touch the exynos-bus.c driver for coupled regulator.
[1] https://www.spinics.net/lists/arm-kernel/msg741971.html

I recommend that you send the cleanup patch with my comment
either after reviewing the Kamil's patch[1] or rebase this series base
on patch[1].

>
> --
> Best Regards,
> Chanwoo Choi



-- 
Best Regards,
Chanwoo Choi