port-i386/47663: Digital PC 3000 running i386 6.0.1 reboots when `shutdown -h now' is executed

[r.phillips%uq.edu.au@localhost]

>Number:         47663
>Category:       port-i386
>Synopsis:       Digital PC 3000 running i386 6.0.1 reboots when `shutdown -h 
>now' is executed
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Mar 18 00:00:01 +0000 2013
>Originator:     Ray Phillips
>Release:        i386 6.0.1
>Organization:
>Environment:
NetBSD tt7 6.0.1 NetBSD 6.0.1 (GENERIC) i386
>Description:
As per this thread:

http://mail-index.netbsd.org/port-i386/2013/03/17/msg003059.html

on a Digital PC 3000 interrupt mapping fails for a uhci device:

uhci0 at pci0 dev 7 function 2: vendor 0x8086 product 0x7112 (rev.0x01)
pci_intr_map: no mapping for pin D (line=ff)
uhci0: couldn't map interrupt

resulting in `shutdown -h now' causing the system to drop into db{} and 
rebooting:

Martin Husemann is going to fix the rebooting but asked me to file a PR about 
the interrupt mapping.
>How-To-Repeat:

>Fix: