[RFC 03/34] dmaengine: virt-dma: add support for cyclic DMA periodic callbacks

Russell King - ARM Linux linux at arm.linux.org.uk
Fri Jun 1 06:39:44 EDT 2012

On Fri, Jun 01, 2012 at 10:26:37AM +0800, zhangfei gao wrote:
> Could we directly treat dma_tx_state.residue as "how many periods have expired"

Why change the behaviour and add complexity to _both_ sides of the API,
as well as confusion about what "residue" means?

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