[PATCH] ep93xx: Implement double buffering for M2M DMA channels

[Mika Westerberg]

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).