Tearing down DMA transfer setup after DMA client has finished

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Vinod Koul <vinod.koul at intel.com> writes:

> To make it efficient, disregarding your Sbox HW issue, the solution is
> virtual channels. You can delink physical channels and virtual channels. If
> one has SW controlled MUX then a channel can service any client. For few
> controllers request lines are hard wired so they cant use any channel. But
> if you dont have this restriction then driver can queue up many transactions
> from different controllers.

Have you been paying attention at all?  This exactly what the driver
ALREADY DOES.

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