interrupts cannot happen before

*hci cannot receive interrupts before it has been initialized.
this was changed to accomodate the pcibios strategy change back
in pre-2.9 times since *hci_init enables interrupts at it's end
and thus unmapped pci interrupt hangs the machine in the
endless loop trying to deliver it (and no hci handler to ack it).
this new way we disable interrupts by hands before we map 'em
on pci and thus ensure that they will not crash an uninitialized
*hci which, in turn, will run right after the interrupt map/establish
and by the time it enables *hci interrupts all gonna be just fine.
please allow us to end this stretched remark for cvs
is getting a power outage in less than 20 minutes.

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