port-macppc/59656: "eject cd" hangs Power Mac G5

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         59656
>Category:       port-macppc
>Synopsis:       "eject cd" hangs Power Mac G5
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-macppc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Sep 15 14:30:00 +0000 2025
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current from around June 2025
>Organization:
  
>Environment:
System: NetBSD
Architecture: powerpc
Machine: macppc
>Description:

I have successfully booted a Power Mac G5 using a CD-RW containing
ofwboot.xcf and a -current kernel configured to mount the root file
system from a SATA SSD.

But when I try to eject the CD-RW by running "eject cd" as root, the
machine hangs.  The console shows the messages

  wdc0:0:0: lost interrupt
  type: atapi tc_bcount: 32 tc_skip: 0

and no further output.

>How-To-Repeat:

>Fix: