linux-kernel - Re: [PATCH] fsldma: add support to 36-bit physical address

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Date:	Tue, 21 Sep 2010 17:04:39 -0500
From:	Timur Tabi <timur@...escale.com>
To:	Scott Wood <scottwood@...escale.com>
Cc:	Kumar Gala <galak@...nel.crashing.org>, dan.j.williams@...el.com,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fsldma: add support to 36-bit physical address

On Tue, Sep 21, 2010 at 4:49 PM, Scott Wood <scottwood@...escale.com> wrote:

> Look in dmaengine.c, there are calls to dma_map_single() and
> dma_map_page(), using what I assume is that same device pointer --
> unless there's confusion between the channel and the controller.

You're right.  I missed this line in the driver:

	fdev->common.dev = &op->dev;

Also, the driver does something stupid.  Sometimes "chan->dev" refers
to dma_chan.chan, and sometimes it refers to fsldma_chan.chan.  I
could have sworn I saw a patch that fixes that, though.

-- 
Timur Tabi
Linux kernel developer at Freescale
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