[PATCH] usb: ehci: make HC see up-to-date qh/qtd descriptor ASAP

On Wed, Aug 31, 2011 at 1:54 AM, Will Deacon [off-list ref] wrote:

Although this doesn't have anything to do with ordering; it's all to do with
immediacy so I think we should try to avoiding using the term `barrier'. If
this can be made part of the coherent DMA API, that might be the best place
for it (I can't think of any other areas this is needed given that the
streaming DMA API and I/O accessors already deal with it).

Agree too.


thanks,
--
Ming Lei