linux-kernel - Re: [PATCH 3/5] usb: roles: add API to get usb_role

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Date:   Fri, 8 Mar 2019 08:52:06 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
        Li Jun <jun.li@....com>,
        Badhri Jagan Sridharan <badhri@...gle.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Min Guo <min.guo@...iatek.com>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        USB <linux-usb@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH 3/5] usb: roles: add API to get usb_role_switch by node

On Fri, Mar 8, 2019 at 8:14 AM Chunfeng Yun <chunfeng.yun@...iatek.com> wrote:
>
> Add usb_role_switch_get_by_node() to make easier to get
> usb_role_switch by node which register it.
> It's useful when there is not device_connection registered
> between two drivers and only knows the node which register
> usb_role_switch.

> +static int __switch_match_node(struct device *dev, const void *node)
> +{
> +       return dev->parent->of_node == (const struct device_node *)node;
> +}

Hmm... Shouldn't be slightly better to compare fwnode instead?

-- 
With Best Regards,
Andy Shevchenko