linux-kernel - Re: [PATCH v10 10/15] spi: dw: Add support for AMD Pensando Elba SoC

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Message-ID: <CAHp75VfFMiy35Q1bX3Az3HgkhK+4bfH+pCE2XwOYVpqT8UiFXA@mail.gmail.com>
Date:   Mon, 6 Mar 2023 21:59:29 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     Brad Larson <blarson@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-spi@...r.kernel.org,
        adrian.hunter@...el.com, alcooperx@...il.com, arnd@...db.de,
        brendan.higgins@...ux.dev, briannorris@...omium.org,
        brijeshkumar.singh@....com, catalin.marinas@....com,
        davidgow@...gle.com, gsomlo@...il.com, gerg@...ux-m68k.org,
        krzk@...nel.org, krzysztof.kozlowski+dt@...aro.org, lee@...nel.org,
        lee.jones@...aro.org, broonie@...nel.org,
        yamada.masahiro@...ionext.com, p.zabel@...gutronix.de,
        piotrs@...ence.com, p.yadav@...com, rdunlap@...radead.org,
        robh+dt@...nel.org, samuel@...lland.org, skhan@...uxfoundation.org,
        suravee.suthikulpanit@....com, thomas.lendacky@....com,
        tonyhuang.sunplus@...il.com, ulf.hansson@...aro.org,
        vaishnav.a@...com, will@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v10 10/15] spi: dw: Add support for AMD Pensando Elba SoC

On Mon, Mar 6, 2023 at 6:00 PM Serge Semin <fancer.lancer@...il.com> wrote:
> On Sun, Mar 05, 2023 at 08:07:34PM -0800, Brad Larson wrote:

...

> > -     node = of_parse_phandle(np, syscon_name, 0);
>
>         node = of_parse_phandle(dev_of_node(pdev->dev), syscon_name, 0);

Side note: I would rather see syscon_fwnode_to_regmap() instead of
this. And IIRC syscon already has an API to find by name.

> > +     if (!node)
>
> > +             return dev_err_probe(&pdev->dev, -ENODEV, "failed to find %s\n",
> > +                                  syscon_name);
>
> Hm, using dev_err_probe() with known error value seems overkill.

It's allowed use and it helps to drop a few unnecessary lines of code.

> > +     syscon = syscon_node_to_regmap(node);
> > +     if (IS_ERR(syscon))
> > +             return dev_err_probe(&pdev->dev, PTR_ERR(syscon),
> > +                                  "syscon regmap lookup failed\n");

-- 
With Best Regards,
Andy Shevchenko