Re: [RFC PATCH] gpiolib: Provide and export gpiod_export_name

From: Alexandre Courbot
Date: Mon Aug 11 2014 - 18:06:24 EST

On Mon, Aug 11, 2014 at 9:13 AM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> On 08/11/2014 08:20 AM, Alexandre Courbot wrote:
> [ ... ]
>> Note that this doesn't change anything to the core of the argument ;
>> we have not heard what Linus thinks about named GPIOs in
>> /sys/class/gpio yet, maybe he will have a different opinion...
> Well, please let me know if/when you are planning to take away
> that existing ABI so I can plan accordingly. FWIW, out-of-kernel
> users I am currently aware of are Juniper Networks and Zodiac
> Aerospace. The latter asked me to help them upstreaming their code.
> If you plan to remove the ABI, you might want to inform its current
> in-kernel users. You can look those up yourself.

We are not taking existing user-space ABIs away. But we are also not
encouraging people to use bad ABIs by introducing new ways to use
them, hence my restraint towards this patch.
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