USB critically broken under RELENG_7 on amd64

[Bruce Simpson]

Hi,

Since jhb@ committed the fixes for ULi SATA, I updated my kernel+world 
on my amd64 desktop machine. So far so good. I updated again Tuesday.

Unfortunately I am now seeing USB warnings during boot:

    uhub1: device problem (TIMEOUT), disabling port 1


I get messages like this for any and all attempts to attach USB devices.

...It works just fine in Windows XP, and worked just fine in RELENG_7 
before. What's going on?  it doesn't appear to be a repeat of the HAL / 
libpciaccess saga from February as it happens from boot.

This is an ALi OHCI + EHCI controller, fwiw. usbdevs -v spews a lot of 
'addr 0 should never happen!'.

Could this be an interrupt handling bug of some kind?

cheers,
BMS