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Date:	Tue, 12 Aug 2014 17:29:05 -0700
From:	Guenter Roeck <>
To:	Alexandre Courbot <>
Cc:	"" <>,
	Linux Kernel Mailing List <>,
	"" <>,
	Linus Walleij <>,
	Randy Dunlap <>
Subject: Re: [RFC PATCH] gpiolib: Provide and export gpiod_export_name

On Mon, Aug 11, 2014 at 03:05:54PM -0700, Alexandre Courbot wrote:
> On Mon, Aug 11, 2014 at 9:13 AM, Guenter Roeck <> 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.

You bring it to the point. You believe that the gpio ABI, or maybe just
named gpio pins, is a bad idea. Nothing I am going to say will influence
that opinion; all we do is to keep turning in circles.

So let's stop wasting our time, agree to disagree, and move on.

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