linux-kernel - Re: [PATCH 1/2] platform/x86: intel_cht_int33fe: Provide fwnode for the USB connector

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Date:   Wed, 20 Feb 2019 17:55:21 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     Andy Shevchenko <andy@...radead.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Darren Hart <dvhart@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] platform/x86: intel_cht_int33fe: Provide fwnode for
 the USB connector

On Tue, Feb 19, 2019 at 2:00 PM Heikki Krogerus
<heikki.krogerus@...ux.intel.com> wrote:
>
> In ACPI, and now also in DT, the USB connectors usually have
> their own device nodes. In case of USB Type-C, those
> connector (port) nodes are child nodes of the controller or
> PHY device, in our case the fusb302. The software fwnodes
> allow us to create a similar child node for fusb302 that
> represents the connector also on Intel CHT.
>
> This makes it possible replace the fusb302 specific device
> properties which were deprecated with the common USB
> connector properties that tcpm.c is able to use directly.



> +       /* Node for the FUSB302 controller */
> +       data->fusb302_node = fwnode_create_software_node(fusb302_props, NULL);
> +       if (IS_ERR(data->fusb302_node))
> +               return PTR_ERR(data->fusb302_node);
> +
> +       /* Node for the connector (FUSB302 is the parent) */
> +       data->port_node = fwnode_create_software_node(usb_connector_props,
> +                                                     data->fusb302_node);
> +       if (IS_ERR(data->port_node)) {

> +               fwnode_remove_software_node(data->fusb302_node);

Sounds like a candidate for
devm_fwnode_create_software_node()

> +               return PTR_ERR(data->port_node);
> +       }

-- 
With Best Regards,
Andy Shevchenko