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Date:   Tue, 29 May 2018 15:38:23 +1000 (AEST)
From:   Finn Thain <fthain@telegraphics.com.au>
To:     Michael Schmitz <schmitzmic@gmail.com>
cc:     Geert Uytterhoeven <geert@linux-m68k.org>,
        Christoph Hellwig <hch@lst.de>,
        Guenter Roeck <linux@roeck-us.net>,
        Joshua Thompson <funaho@jurai.org>,
        Greg Ungerer <gerg@linux-m68k.org>,
        linux-m68k <linux-m68k@lists.linux-m68k.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH] m68k: set dma and coherent masks for Macintosh SONIC
 based ethernet
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On Tue, 29 May 2018, Michael Schmitz wrote:

> > 
> > Since an arch gets to apply limits in the dma ops it implements, why 
> > would arch code also have to set a limit in the form of default 
> > platform device masks? Powerpc seems to be the only arch that does 
> > this.
> 
> One of Christoph's recent patches removed most of arches' dma ops, 
> replacing them by one generic implementation instead. m68k was one of 
> the affected arches. I concede his patch series is experimental still 
> and not in mainline, but may be included at some time.

I found some patches here,
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/generic-dma-noncoherent.2

Looks like m68k_dma_alloc() gets renamed arch_dma_alloc() and the generic 
ops don't use the dma masks.

Maybe I'm looking at the wrong patches?

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