usb with fast interrupts

[Julian Elischer]

M. Warner Losh wrote:

>Our usb system supports soft interrupts, but we currently don't make
>productive use of them.  The following makes interrupts fast
>interrupts and uses taskqueues to queue data to a SWI.
>
>Lemme know if it works for you.
>
>Warner
>

certainly looks ok on first glance..
Could probably go to the usb list too for archive purposes.