Async DMA question regarding dma_async_memcpy_buf_to_buf

[Scott Wood]

Bruce_Leonard at selinc.com wrote:
> Maybe (with you clarification) this is starting to make sense.  It doesn't 
> matter if the "src" is host memory or PCI space.  What the "src" and it's 
> DMA_TO_DEVICE mapping is saying to the kernel is "this data needs to be 
> moved into the DMA engine", while the "dest" and it's DMA_FROM_DEIVCE 
> mapping is telling the kernel "this data needs to be moved from the DMA 
> engine".

Right.

-Scott