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Message-ID: <20120323070446.GC5812@mwesterb-mobl.ger.corp.intel.com>
Date: Fri, 23 Mar 2012 09:04:46 +0200
From: Mika Westerberg <mika.westerberg@....fi>
To: H Hartley Sweeten <hartleys@...ionengravers.com>
Cc: Rafal Prylowski <prylowski@...asoft.pl>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"vinod.koul@...el.com" <vinod.koul@...el.com>,
"rmallon@...il.com" <rmallon@...il.com>
Subject: Re: [PATCH] ep93xx: Implement double buffering for M2M DMA channels
On Thu, Mar 22, 2012 at 09:19:10PM -0500, H Hartley Sweeten wrote:
> Did you test this patch or just review it?
I tested and reviewed it.
> On my system it doesn't work. I think it has something to do with the
> changes to m2m_hw_interrupt but I haven't tracked it down yet.
>
> It looks like what's missing is a:
>
> edmac->edma->hw_submit(edmac);
>
> But, maybe that's not needed with double buffering?
Did you try without your patch and adding my VIC hack? That's what I did when
I first got this patch and I saw no problems. I tested with audio (M2P),
mmc_spi (M2M) and dmatest (M2M).
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