Hans Petter Selasky <hselasky@c2i.net> writes:

> Maybe I am a little too quick to say this, but doesn't the whole USB system 
> just use splnet/splx to protect data structures? On a multiprocessor system, 
> isn't things going to crash after a while, hence more than one CPU can enter 
> into the code that is protected by splnet/splx ? So actually it is time they 
> implement mutexes in NetBSD too?

NetBSD's SMP kernel is under a big-lock, so this isn't a problem for
the time being.

        - Nathan