linux-kernel - Re: USB device DMA support on OMAP2

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Date:	Sun, 04 Nov 2007 22:24:08 -0800
From:	David Brownell <david-b@...bell.net>
To:	linux-omap-open-source@...ux.omap.com,
	linux-kernel@...r.kernel.org, kyungmin.park@...sung.com
Cc:	tony@...mide.com
Subject: Re: USB device DMA support on OMAP2

> The current omap udc dosen't support the DMA mode

It most certainly does!!  I think you it has DMA issues on OMAP2.


> and it has some problem at setup time on OMAP2 with previous patch file.
> I found that the code assumes bulk out required the big data transfer.
> But MODE SELECT(6) sent the only 24 bytes. it makes a problem.
> So I implement the small packets handling for it.
>
> It is tested with both linux and windows.
>
> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>

I'll have a look at it, thanks.

Is this aginst the linux-omap tree, or current kernel.org code?
(There _shouldn't_ be any differences, but I've not checked in
some time now and such issues do creep in from time to time.)

- Dave

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