linux-kernel - Re: [lm-sensors] 2.6.24-rc4 hwmon it87 probe fails

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Message-ID: <20071209234215.748ed407@hyperion.delvare>
Date:	Sun, 9 Dec 2007 23:42:15 +0100
From:	Jean Delvare <khali@...ux-fr.org>
To:	Elvis Pranskevichus <el@...ns.net>
Cc:	Mike Houston <mikeserv@...s.com>, Adrian Bunk <bunk@...sta.de>,
	mhoffman@...htlink.com, linux-kernel@...r.kernel.org,
	lm-sensors@...sensors.org, Bjorn Helgaas <bjorn.helgaas@...com>,
	Adam Belay <ambx1@....rr.com>
Subject: Re: [lm-sensors] 2.6.24-rc4 hwmon it87 probe fails

Hi Elvis,

On Sun, 09 Dec 2007 16:12:25 -0500, Elvis Pranskevichus wrote:
> I have exactly the same problem here on a Gigabyte GA-965G-DS3 motherboard
> based box:

Same motherboard as Mike has.

> it87: Found IT8718F chip at 0x290, revision 1
> it87: in3 is VCC (+5V)
> it87 it87.656: Failed to request region 0x290-0x297
> it87: probe of it87.656 failed with error -16
> 
> git bisecting revealed the offending commit:
> 
> a7839e960675b54: PNP: increase the maximum number of resources
> 
> Happened between rc3 and rc4.
> 
> > Either way, the overlapping areas smell like a BIOS bug, meaning that
> > you should look for an updated BIOS for your system first.
> > 
> >> http://www.mikeserv.com/temp/config-2.6.24-rc4.txt
> > 
> 
> This indeed looks like a broken ACPI BIOS since the aforementioned commit
> touches only the PNP ACPI driver. I'm not sure how to work around this,
> though. Ideas?

Complaining to Gigabyte seems to be the best approach.

In the meantime, I guess that booting with pnpacpi=off should fix your
problem. But it might break something else; I'm not sure what the PNP
ACPI driver is good for in the first place.

-- 
Jean Delvare
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