linux-kernel - Re: dma_declare_coherent

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Message-ID: <1a55cf69-8fe1-dca0-68c7-f978567f9ca0@landley.net>
Date:   Sat, 26 Jun 2021 17:36:08 -0500
From:   Rob Landley <rob@...dley.net>
To:     Christoph Hellwig <hch@....de>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>
Cc:     linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: dma_declare_coherent_memory and SuperH

On 6/23/21 8:32 AM, Christoph Hellwig wrote:
> Hi SuperH maintainers,
> 
> I have a vague recollection that you were planning on dropping support
> for non-devicetree platforms, is that still the case?

We'd like to convert them, but have to rustle up test hardware for what _is_
still available. (There was some motion towards this a year or so back, but it
petered out because pandemic and everyone got distracted halfway through.)

(We should definitely START by converting the r2d board qemu emulates. :)

> The reason I'm asking is because all but one users of
> dma_declare_coherent_memory are in the sh platform setup code, and
> I'd really like to move towards killing this function off.

Understood. Is there an easy "convert to this" I could do to those callers?

Rob