linux-kernel - Re: [PATCH V3 4/5] net: ethernet: ravb: Enable optional refclk

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Message-ID: <CAMuHMdUG4gmaVvbg13TMcA8+FL5-7+Qxmdh3X+CNCJQdq_vPkQ@mail.gmail.com>
Date:   Mon, 29 Mar 2021 15:08:03 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Adam Ford <aford173@...il.com>
Cc:     netdev <netdev@...r.kernel.org>,
        Adam Ford-BE <aford@...conembedded.com>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V3 4/5] net: ethernet: ravb: Enable optional refclk

Hi Adam,

On Mon, Mar 29, 2021 at 2:45 PM Adam Ford <aford173@...il.com> wrote:
> On Thu, Mar 4, 2021 at 2:08 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> > On Wed, Feb 24, 2021 at 12:52 PM Adam Ford <aford173@...il.com> wrote:
> > > For devices that use a programmable clock for the AVB reference clock,
> > > the driver may need to enable them.  Add code to find the optional clock
> > > and enable it when available.
> > >
> > > Signed-off-by: Adam Ford <aford173@...il.com>
> >
> > Thanks for your patch!
> >
> > > --- a/drivers/net/ethernet/renesas/ravb_main.c
> > > +++ b/drivers/net/ethernet/renesas/ravb_main.c
> > > @@ -2148,6 +2148,13 @@ static int ravb_probe(struct platform_device *pdev)
> > >                 goto out_release;
> > >         }
> > >
> > > +       priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk");
> > > +       if (IS_ERR(priv->refclk)) {
> > > +               error = PTR_ERR(priv->refclk);
> > > +               goto out_release;
> > > +       }
> > > +       clk_prepare_enable(priv->refclk);
> > > +
> >
> > Shouldn't the reference clock be disabled in case of any failure below?
> >
> I'll generate a V4.
>
> Should I just regenerate this patch since it seems like the rest are
> OK, or should I regenerate the whole series?

As the DT bindings haven't been applied yet, I think it would be
best if you would send a v4 with just the patches for the netdev
tree (i.e. DT bindings patch 1 and driver patch 4).

I will take the DT patches from this series, once the bindings have been
accepted.

Thank you!

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds