Giant lock, bce and uhc using the same irq

[Hans Petter Selasky]

On Monday 17 November 2008, Ed Schouten wrote:
> * Kris Kennaway <kris at FreeBSD.org> wrote:
> > P.S. In 8.0 there is a new USB stack that is Giant-free.
>
> I'm not sure this is completely true. Maybe HPS could explain it in more
> detail, but Giant still seems to be used pretty often.

All the interrupt handlers of the Host- and Device-controller drivers are free 
from locking Giant when executing.

--HPS