kern/58027: ehci failed attach stops suspend/resume

[mrg%eterna23.net@localhost]

>Number:         58027
>Category:       kern
>Synopsis:       ehci failed attach stops suspend/resume
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 10 10:00:01 +0000 2024
>Originator:     matthew green
>Release:        -current
>Organization:
>Environment:
amd64
>Description:
if something in the ehci_pci attach fails, it never registers any pmf
handlers, so the system is unable to suspend.
>How-To-Repeat:
try to suspend a system that has a:

ehci0 at pci1 dev 0 function 4: Realtek Semiconductor product 816d (rev. 0x0e)
ehci0: 32-bit DMA
ehci0: interrupting at msix2 vec 0
ehci0: pre-2.0 USB rev, device ignored

>Fix:
https://www.netbsd.org/~mrg/ehci-detach.v4.diff