linux-kernel - Re: [RFC PATCH] m68k: set dma and coherent masks for Macintosh SONIC based ethernet

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Message-ID: <CAMuHMdUzp-Bqc0s7SsKFKuiiC8Eb9dk3uUcynjVApg=UQ6g-yQ@mail.gmail.com>
Date:   Wed, 30 May 2018 21:55:08 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Greg Ungerer <gerg@...ux-m68k.org>
Cc:     Finn Thain <fthain@...egraphics.com.au>,
        Christoph Hellwig <hch@....de>,
        Michael Schmitz <schmitzmic@...il.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Joshua Thompson <funaho@...ai.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] m68k: set dma and coherent masks for Macintosh SONIC
 based ethernet

Hi Greg,

On Wed, May 30, 2018 at 2:28 AM, Greg Ungerer <gerg@...ux-m68k.org> wrote:
> On 28/05/18 20:15, Geert Uytterhoeven wrote:
>> On Mon, May 28, 2018 at 7:26 AM, Finn Thain <fthain@...egraphics.com.au>
>> wrote:
>>> On Mon, 28 May 2018, Michael Schmitz wrote:
>>>> Am 27.05.2018 um 17:49 schrieb Finn Thain:
>>>>> On Sun, 27 May 2018, Michael Schmitz wrote:
>>>>>> That should have fixed the warning already ...
>>>>>
>>>>> It's still not fixed (hence my "acked-by" for Geunter's patch).
>>>>
>>>> Odd - does link order still matter even though the
>>>> arch_setup_dev_archdata() function from the core platform code is
>>>> declared as a weak symbol?
>>>>
>>>> I'll see what I can find out on elgar ...
>>>
>>> Any one of the numerous patches/rfcs/suggestions that I sent will avoid
>>> the WARN splat.
>>>
>>> When I said "it's still not fixed", what I meant to say was, "it's still
>>> not fixed in mainline and no proposed fix was accepted to the best of my
>>> knowledge".
>>
>> Indeed.
>>
>> Do we have a consensus on the way forward? The merge window for
>> v4.18 will open soon.
>
> For whatever it is worth I thought Finn's patch was the best approach
> (https://lkml.org/lkml/2018/5/17/333, "m68k: Set default dma mask for
> platform device").

FTR: done.

> We seem to be hitting quite a few places (within m68k) that otherwise
> need individual fixes. There is no immediate need to revert existing
> changes that have already been applied if we use this now either
> (like my FEC fix, commit f61e64310b75 "m68k: set dma and coherent
> masks for platform FEC ethernets").

Indeed.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds