linux-kernel - Re: [PATCH] media: zoran: move to dma-mapping interface

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Message-ID: <CAK8P3a0CHSC7yP3x8xDJgcg5xMzD1-sC-rmBJECtYvGFmyG4vQ@mail.gmail.com>
Date:   Wed, 25 Apr 2018 17:58:25 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        mjpeg-users@...ts.sourceforge.net,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Trent Piepho <tpiepho@...inj.com>
Subject: Re: [PATCH] media: zoran: move to dma-mapping interface

On Wed, Apr 25, 2018 at 5:26 PM, Christoph Hellwig <hch@...radead.org> wrote:
> On Wed, Apr 25, 2018 at 01:15:18PM +0200, Arnd Bergmann wrote:
>> That thought had occurred to me as well. I removed the oldest ISDN
>> drivers already some years ago, and the OSS sound drivers
>> got removed as well, and comedi got converted to the dma-mapping
>> interfaces, so there isn't much left at all now. This is what we
>> have as of v4.17-rc1:
>
> Yes, I've been looking at various grotty old bits to purge.  Usually
> I've been looking for some non-tree wide patches and CCed the last
> active people to see if they care.  In a few cases people do, but
> most often no one does.

Let's start with this one (zoran) then, as Mauro is keen on having
all media drivers compile-testable on x86-64 and arm.

Trent Piepho and Hans Verkuil both worked on this driver in the
2008/2009 timeframe and those were the last commits from anyone
who appears to have tested their patches on actual hardware.

Trent, Hans: do you have reason to believe that there might still
be users out there?

       Arnd