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

From: Stephen Warren
Date: Fri Feb 21 2014 - 00:35:51 EST


On 02/20/2014 06:55 PM, Chen-Yu Tsai wrote:
> Hi,
>
> On Fri, Feb 21, 2014 at 12:38 AM, Stephen Warren <swarren@xxxxxxxxxxxxx> 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.

But this code is the consumer of those GPIOs. IF the parameter to
devm_gpiod_get_index() isn't intended to be used, why does it exist?

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