linux-kernel - Re: [PATCH v2 1/3] mtd: nand: Cleanup/rework the atmel

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Date:   Tue, 21 Feb 2017 17:21:33 +0100
From:   Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Hans-Christian Egtvedt <egtvedt@...fundet.no>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Richard Weinberger <richard@....at>,
        "open list:MEMORY TECHNOLOGY..." <linux-mtd@...ts.infradead.org>,
        Nicolas Ferre <nicolas.ferre@...el.com>,
        Haavard Skinnemoen <hskinnemoen@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Wenyou Yang <wenyou.yang@...el.com>,
        Josh Wu <rainyfeeling@...look.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Cyrille Pitchen <cyrille.pitchen@...el.com>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Rob Herring <robh+dt@...nel.org>,
        Pawel Moll <pawel.moll@....com>,
        Mark Rutland <mark.rutland@....com>,
        Ian Campbell <ijc+devicetree@...lion.org.uk>,
        Kumar Gala <galak@...eaurora.org>,
        devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] mtd: nand: Cleanup/rework the atmel_nand driver

On 21/02/2017 at 18:09:09 +0200, Andy Shevchenko wrote:
> On Tue, Feb 21, 2017 at 1:27 PM, Alexandre Belloni
> <alexandre.belloni@...e-electrons.com> wrote:
> > (adding Hans-Christian)
> >
> > On 21/02/2017 at 13:02:21 +0200, Andy Shevchenko wrote:
> >> Abusing platform data with pointers is also not welcome.
> >>
> >> > (in this case, avr32).
> >>
> >> It's dead de facto.
> >>
> >> When last time did you compile kernel for it? What was the version of kernel?
> >> Did it get successfully?
> >>
> >
> > v4.10-rc3 was building successfully but had some issues in the network
> > code.
> 
> Newer kernel doesn't link...
> 
> >> When are we going to remove avr32 support from kernel completely?
> 
> > Ask that to the avr32 maintainers. It still builds and is still booted
> > by some people. And that actually seems to be you as you reported a bug
> > we introduced in 4.3. I don't think we had any other report after that.
> 
> https://patchwork.kernel.org/patch/9505727/
> 
> After that I gave up on it. Next time I will escalate directly to
> Linus. It's a complete necrophilia. I spent already enough time to
> look at that code. It brings now more burden than supports someone
> somewhere.
> 

As said, it builds fine without networking. Maybe the first step is to
ask the avr32 maintainers. If you already did so, please feel free to
send a patch to remove the whole architecture.
The benefits for atmel will be: proper big endian support, removal of
platform data from all the drivers, better clocksource handling.

> > It can be frustrating at times to handle that platform but if it is
> > working for someone, I don't see why we would remove it.
> 
> How it's working if it's not linked?
> 

Come on, v4.10 has just been release and v4.9 was building just fine. Do
you really expect everybody to closely follow linux-next or update
overnight?

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com