On 11/10/2017 6:44 PM, Kim Phillips wrote:

On Fri, 10 Nov 2017 08:02:01 +0000
Radu Andrei Alexe [off-list ref] wrote:

[snip]>> 2. I wanted this driver to be tracked by the dma engine team.
They have

quoted

the right expertise to provide adequate feedback. If all the code was in 
the crypto directory they wouldn't know about this driver or any 
subsequent changes to it.

dma subsystem bits could still be put in the dma area if deemed
necessary but I don't think it is: I see
drivers/crypto/ccp/ccp-dmaengine.c calls dma_async_device_register for
example.

Please see previous discussion with Vinod:
https://www.mail-archive.com/linux-crypto@vger.kernel.org/msg21468.html

What is the rationale for using the crypto h/w as a dma engine anyway?

SoCs that don't have a system DMA, for e.g. LS1012A.

Horia