linux-kernel - Re: [PATCH 2/4] net: rfkill: gpio: remove gpio names

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Message-ID: <CAGb2v66-tDZhrm9dnXe+PdQTaLZbw20sw3uYzLor2eXpVWmPMA@mail.gmail.com>
Date:	Fri, 21 Feb 2014 09:55:28 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Johannes Berg <johannes@...solutions.net>,
	"David S. Miller" <davem@...emloft.net>,
	Rhyland Klein <rklein@...dia.com>,
	linux-wireless <linux-wireless@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>
Subject: Re: [PATCH 2/4] net: rfkill: gpio: remove gpio names

Hi,

On Fri, Feb 21, 2014 at 12:38 AM, Stephen Warren <swarren@...dotorg.org> wrote:
> On 02/20/2014 05:51 AM, Heikki Krogerus wrote:
>> There is no use for them in this driver. This will fix a
>> static checker warning..
>
> Didn't you remove the use:
>
> -       gpio = devm_gpiod_get_index(&pdev->dev, rfkill->reset_name, 0);
> +       gpio = devm_gpiod_get_index(&pdev->dev, NULL, 0);
>
> doesn't that parameter get put into the sysfs GPIO debug file, so people
> can see which GPIOs are used for what?

That's correct. However using con_id to pass this results in different
behavior across DT and ACPI. A better way is to export the labeling
function so consumers can set meaningful labels themselves.


Cheers
ChenYu
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