kern/91023: cpufreq/p4tcc: sysctl: dev.cpu.0.freq: Device busy

[Christian Wittenhorst]

>Number:         91023
>Category:       kern
>Synopsis:       cpufreq/p4tcc: sysctl: dev.cpu.0.freq: Device busy
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 28 16:50:03 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Christian Wittenhorst
>Release:        6.0p1
>Organization:
progon network engineering
>Environment:
FreeBSD mirror.kanti-zug.ch 6.0-RELEASE-p1 FreeBSD 6.0-RELEASE-p1 #5: Thu Dec 22 20:54:54 CET 2005     root at mirror.kanti-zug.ch:/usr/src/sys/i386/compile/mirror  i386
>Description:
> Dec 28 17:32:54 mirror kernel: p4tcc0: 
>   <CPU Frequency Thermal Control> on cpu0

> dev.cpu.0.freq: 2999
> dev.cpu.0.freq_levels: 2999/-1 2624/-1 2249/-1 
>   1874/-1 1499/-1 1124/-1 749/-1 374/-1              

mirror# sysctl dev.cpu.0.freq=2624
dev.cpu.0.freq: 2999
sysctl: dev.cpu.0.freq: Device busy

Happens on several servers (same hardware type). The hardware is HP/Compaq DC7100 series...
>How-To-Repeat:
(see description)              
>Fix:
              
>Release-Note:
>Audit-Trail:
>Unformatted: