kern/59253: amdzentemp fails to register with sysmon

[paul%whooppee.com@localhost]

>Number:         59253
>Category:       kern
>Synopsis:       amdzentemp fails to register with sysmon
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 06 01:50:00 +0000 2025
>Originator:     Paul Goyette
>Release:        NetBSD 10.99.12
>Organization:
+---------------------+--------------------------+----------------------+
| Paul Goyette (.sig) | PGP Key fingerprint:     | E-mail addresses:    |
| (Retired)           | 1B11 1849 721C 56C8 F63A | paul%whooppee.com@localhost    |
| Software Developer  | 6E2E 05FD 15CE 9F2D 5102 | pgoyette%netbsd.org@localhost  |
| & Network Engineer  |                          | pgoyette99%gmail.com@localhost |
+---------------------+--------------------------+----------------------+
>Environment:
	
	
System: NetBSD speedy.whooppee.com 10.99.12 NetBSD 10.99.12 (SPEEDY 2025-03-28 23:40:52 UTC) #0: Sat Mar 29 00:36:14 UTC 2025 paul%speedy.whooppee.com@localhost:/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/SPEEDY amd64
Architecture: x86_64
Machine: amd64
>Description:
When the amdzentemp module is loaded after boot (ie, NOT built-in to
the kernel) it fails to register with sysmon and therefore the sensors
are inaccessible. If the module is built-in, eveything works as one
might expect.
	
>How-To-Repeat:
	
* Build kernel without amdzentemp (and optionally without amdsmn)
* Boot, load the module with modload
* Observe (with modstat) that the load succeeded
* Observe with envstat that no sensor device is registered
>Fix:
Please
	

>Unformatted: