linux-kernel - Re: [PATCH 1/2] dmaengine: TXx9 Soc DMA Controller driver

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Message-Id: <20090402.012045.61946991.anemo@mba.ocn.ne.jp>
Date:	Thu, 02 Apr 2009 01:20:45 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	dan.j.williams@...el.com
Cc:	linux-mips@...ux-mips.org, ralf@...ux-mips.org,
	linux-kernel@...r.kernel.org, haavard.skinnemoen@...el.com
Subject: Re: [PATCH 1/2] dmaengine: TXx9 Soc DMA Controller driver

On Tue, 31 Mar 2009 12:34:59 -0700, Dan Williams <dan.j.williams@...el.com> wrote:
> > Unfortunately, not so simple.  If I created a dma_device for each
> > channel, all chan->chan_id will be 0 and all chan->device->dev points
> > same platform device.  This makes client driver hard to select the
> > particular channel.  Making a platform device for each channel will
> > solve this, but it looks wrong way to go for me.
> 
> Why?  mv_xor, iop-adma, and ioat each have a platform or pci device
> per channel so you would be in good company.

Hmm, indeed.  I will try it.  Thanks.
---
Atsushi Nemoto
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