linux-kernel - Re: [PATCH v6 2/7] platform/chrome: cros_ec

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Message-ID: <CACeCKaewXJYUJCyGyh==dsA6wsU4OESXFXJRiKm9AWPECS_ZBA@mail.gmail.com>
Date:   Thu, 24 Nov 2022 21:53:35 -0800
From:   Prashant Malani <pmalani@...omium.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Pin-yen Lin <treapking@...omium.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Stephen Boyd <swboyd@...omium.org>,
        dri-devel@...ts.freedesktop.org,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        devicetree@...r.kernel.org, chrome-platform@...ts.linux.dev,
        linux-acpi@...r.kernel.org, Marek Vasut <marex@...x.de>,
        Xin Ji <xji@...logixsemi.com>, Lyude Paul <lyude@...hat.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        linux-kernel@...r.kernel.org, Allen Chen <allen.chen@....com.tw>
Subject: Re: [PATCH v6 2/7] platform/chrome: cros_ec_typec: Purge blocking
 switch devlinks

Hi Andy,

Thanks for taking a look at this patch.

Pin-Yen beat me to the punch with comment responses, but I'll add mine anyway.

On Thu, Nov 24, 2022 at 4:25 AM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
> ...
>
> > +     /*
> > +      * OF graph may have set up some device links with switches, since connectors have their
> > +      * own compatible. Purge these to avoid a deadlock in switch probe (the switch mistakenly
> > +      * assumes the connector is a supplier).
> > +      */
>
> A bit too long lines...

They are within the 100 character limit [1] which is followed
elsewhere in the driver; has something
changed recently to make that invalid?

>
> > +     if (dev->of_node)
>
> Why do you need this check?

This issue only arises when using DT for this device. So the rationale
is we don't need to
perform this step on systems that don't use DT.

Best regards,

-Prashant

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bdc48fa11e46f867ea4d75fa59ee87a7f48be144