On Wed, Apr 26, 2017 at 11:43:18PM -0700, Jiada Wang wrote:

> The reason I gave the example use case is want to point out that
> with Geert's patch set, a SPI device (with only one controller) can no
> longer
> act as master and slave at the same time. because IMO as a SPI core
> function,
> it needs to cover all the use cases, and to be as generic as possible.

> BUT if you think the use case don't need to be supported from SPI core,
> then I don't have objection either, I will only submit imx SPI slave support
> patch,
> after your SPI slave support patch set been applied

I think there's a bunch of other problems with how that works reliably
that'd need to be addressed before someone could actually do that, and
it seems like such hardware will be very unusual.