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

[Mark Salter]

On Wed, 2011-08-31 at 13:49 -0500, Rob Herring wrote:
> An outer_sync will only drain the write buffer of the L2. It does not
> flush the cache though. If the write buffer does in fact keep data as
> long as possible (until it needs a free slot or the line is full), then
> long delays to write out data are certainly possible. The exact
> operation is not documented AFAIR.

Ah, thanks for that. I really haven't been paying close attention to
ARMv6/7 hardware and I'm in the process of playing catch up.

--Mark