linux-kernel - Re: [PATCH 3/3] usb: typec: mux: Use the "compatible" property instead of a boolean property

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Message-ID: <CAKgpwJXu1VP8Wq5OhUrThMR+63OiM9Lstn0ycijxSLBko_+pTw@mail.gmail.com>
Date:   Mon, 15 Jul 2019 18:17:21 +0800
From:   Jun Li <lijun.kernel@...il.com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Biju Das <biju.das@...renesas.com>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-acpi@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] usb: typec: mux: Use the "compatible" property
 instead of a boolean property

Hi Heikki,

Heikki Krogerus <heikki.krogerus@...ux.intel.com> 于2019年3月28日周四 上午12:45写道：
>
> Instead of searching for a boolean property, matching
> against the "compatible" property.
>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> ---
>  drivers/usb/typec/mux.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
> index 2ce54f3fc79c..9462b90f1c09 100644
> --- a/drivers/usb/typec/mux.c
> +++ b/drivers/usb/typec/mux.c
> @@ -32,11 +32,7 @@ static void *typec_switch_match(struct device_connection *con, int ep,
>                 return ERR_PTR(-EPROBE_DEFER);
>         }
>
> -       /*
> -        * With OF graph the mux node must have a boolean device property named
> -        * "orientation-switch".
> -        */
> -       if (con->id && !fwnode_property_present(con->fwnode, con->id))
> +       if (con->id && !fwnode_is_compatible(con->fwnode, con->id))

This is still the right approach for orientation switch match, right?

Li Jun
>                 return NULL;
>
>         list_for_each_entry(sw, &switch_list, entry)
> @@ -148,7 +144,7 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data)
>
>         /* Accessory Mode muxes */
>         if (!desc) {
> -               match = fwnode_property_present(con->fwnode, "accessory");
> +               match = fwnode_is_compatible(con->fwnode, "accessory");
>                 if (match)
>                         goto find_mux;
>                 return NULL;
> --
> 2.20.1
>