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kern/45268: amdtemp(4) should attach to pchb rather than pci?

>Number:         45268
>Category:       kern
>Synopsis:       amdtemp(4) should attach to pchb rather than pci?
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 18 16:05:00 +0000 2011
>Originator:     Paul Goyette
>Release:        NetBSD 5.99.55
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:       |
| Customer Service | FA29 0E3B 35AF E8AE 6651 | paul at    |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at |
| Kernel Developer |                          | pgoyette at  |
System: NetBSD 5.99.55 NetBSD 5.99.55 (WHOOPPEE (shared) 
2011-08-10 23:23:58) #4: Wed Aug 10 16:27:08 PDT 2011
Architecture: x86_64
Machine: amd64
The amdtemp(4) device was recently modularized.  However, using it as
a module is really not very useful, since by default a "pchb*" device will
attach to the same "pci? dev ? function ?", precluding subsequent attach
of the amdtemp device.  (When this code is built-in to the kernel, the
amdtemp(4) match() returns a higher value than pchb(4).)

It was suggested in private Email (I forget who it was) that the amdtemp(4)
should really attach at pchb?, since there is at least one other device
(agp-related?) that shares the same pchb on certain processor models.


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