UHCI patch stops system lockup (kern/73000)

[Daan Vreeken [PA4DAN]]

Hi All,

Friday I have submitted a PR with a patch attached to it that fixes a bug in 
the UHCI USB driver. The bug causes a lot of UHCI systems with USB devices 
plugged during boot to either boot very slowly (take minutes), or seem to 
halt forever during boot.

See :
http://www.freebsd.org/cgi/query-pr.cgi?pr=73000

Could someone please take a look at the PR?

Thanks,
Daan