PERFORCE change 155755 for review

[M. Warner Losh]

In message: <200901081838.55030.hselasky at freebsd.org>
            Hans Petter Selasky <hselasky at freebsd.org> writes:
: On Thursday 08 January 2009, M. Warner Losh wrote:
: > In message: <200901071327.n07DRFt5091936 at repoman.freebsd.org>
: >
: >             Hans Petter Selasky <hselasky at freebsd.org> writes:
: > : 	Fix a race causing the explore thread to
: > : 	hang when tearing down USB transfers at
: > : 	detach.
: >
: > Would this explain a hang with a wait channel of DMSG on kldunload of
: > the drivers?
: >
: > Warner
: 
: Yes,
: 
: If "ps auxw| grep DRAIN" shows you something.
: 
: Try out -current next week if you don't have access to P4.

I'll give it a spin when I finish rescuing a failing hard drive...

Warner