[PATCH] DMA: extend documentation to provide more API details

[Vinod Koul]

On Mon, Oct 07, 2013 at 05:28:37PM +0200, Guennadi Liakhovetski wrote:
> > > > > > No, not something in the middle. I was thinking about
> > > > > > 
> > > > > > (1) cookie 1-3 are submitted
> > > > > > (2) cookie 1 succeeds
> > > > > > (3) a DMA error occurs, cookies 2-3 are discarded
> > > > discarded using terminate_all right?
> > > 
> > > No, by the dmaengine driver as a part of the error processing.
> > And how will that be done...?
> 
> Sorry, I meant - DMA descriptors with cookies #2 and #3 will be cancelled 
> and recycled by the dmaengine driver. That's what you have to do, when 
> processing DMA error IRQ.
Well how do you that?

--
~Vinod