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From: Paul Mackerras <paulus@samba.org>
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Date: Thu, 12 Sep 2002 16:54:03 +1000 (EST)
To: Jens Axboe <axboe@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH] highmem I/O for ide-pmac.c
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Jens Axboe writes:

> The above refers to ide_toggle_bounce() export, pmac_* variant is
> exactly the same. Sorry if that wasn't clear.

Why does ide_toggle_bounce assume we can only do DMA to highmem if
drive->media == ide_disk?  At the moment I can't see any reason why
the ide-pmac interface can't do DMA to highmem for a cdrom, for
instance.

Paul.