Re: kern/43543 ipmi(4) driver fails to collect Fan2 signal on Intel X38ML board

[Michael van Elst <mlelstv%serpens.de@localhost>]

The following reply was made to PR kern/43543; it has been noted by GNATS.

From: Michael van Elst <mlelstv%serpens.de@localhost>
To: gnats-bugs%gnats.netbsd.org@localhost
Cc: 
Subject: Re: kern/43543 ipmi(4) driver fails to collect Fan2 signal on
 Intel X38ML board
Date: Fri, 30 Jul 2010 11:52:34 +0200

 The ipmi driver only knows about linear sensor values (in fact, it
 ignores the linearization function). My system (HP ML110G4) returns
 something like 1/(val * 10^-7 + offset) which always results in 0
 because the code doesn't handle fractions and ignores the 1/X step.
 
 ipmi on the 4.0 system does the same, but the envstat output
 is probably not generated from ipmi.
 
 -- 
                                 Michael van Elst
 Internet: mlelstv%serpens.de@localhost
                                 "A potential Snark may lurk in every tree."