linux-kernel - Re: [PATCH] hwmon/coretemp: Fix a broken error path

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Date:	Thu, 21 Jun 2007 23:55:16 +0200
From:	Soeren Sonnenburg <kernel@....de>
To:	Rudolf Marek <r.marek@...embler.cz>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	LM Sensors <lm-sensors@...sensors.org>
Subject: Re: [PATCH] hwmon/coretemp: Fix a broken error path - microcode
	update fix

On Thu, 2007-06-21 at 22:57 +0200, Rudolf Marek wrote:
> Hello Soeren,
> 
> Sorry for the delay.
> 
> I'm ccing all lists maybe some other people are interested. There is known 
> errata AE18 which prevents coretemp from working correctly on some mobile Core 
> processors (family 6 model e). My driver refuses to load and now thanks to 
> soeren will not crash ;) However what to do when no microcode update (no new 
> BIOS) is available?
> 
> Soeren pointed at some T60, T60p BIOS update and luckily, there is a easy way 
> how to extract the microcode update and even convert it into the .txt format as 
> microcode update utility (http://www.urbanmyth.org/microcode/) expects.
> Attached scripts generates the mcode.txt file which may be used by the update 
> utility. Please can you give a try?

great! it works:

sensors excerpt :

coretemp-isa-0000
Adapter: ISA adapter
temp1:       +62°C  (high =  +100°C)                     

coretemp-isa-0001
Adapter: ISA adapter
temp1:       +64°C  (high =  +100°C)

> It seems that there is microcode update for CPUID 06E8 version 0x39 just as my 
> driver is checking. So if your CPUID is 06e8 too you should get the coretemp 
> driver working.

how do I find that out ? I mean sensors seem to work but how do I know
which CPUID+version I have ?

> If so I will post a patch and document the script in documentation directory (or 
> at least some general instructions how to do that)
> 
> Please tell me your stepping:
> cat /proc/cpuinfo  | grep stepping

$ cat /proc/cpuinfo  | grep stepping
stepping        : 8
stepping        : 8

Thank you *very* much!
Soeren
-- 
Sometimes, there's a moment as you're waking, when you become aware of
the real world around you, but you're still dreaming.
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