Kernel panics when Atheros card plugged in.

[M. Warner Losh]

In message: <43BB0455.80508 at fastmail.fm>
            Patrick Bowen <pbowen at fastmail.fm> writes:
: BTW; what does "BAR" stand for?

Base Address Register.  These are the registers that determine which
address range the PCI device will respond to.  If they are incorrectly
programmed, then the driver will access resources that the device
hasn't been setup to respond to.

Warner