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

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Date:	Sun, 9 Dec 2007 23:02:11 -0500
From:	Mike Houston <mikeserv@...s.com>
To:	Shaohua Li <shaohua.li@...el.com>
Cc:	Adrian Bunk <bunk@...sta.de>, Elvis Pranskevichus <el@...ns.net>,
	Jean Delvare <khali@...ux-fr.org>,
	Mike Houston <mikeserv@...s.com>, mhoffman@...htlink.com,
	linux-kernel@...r.kernel.org, lm-sensors@...sensors.org,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Adam Belay <ambx1@....rr.com>,
	Zhao Yakui <yakui.zhao@...el.com>,
	Thomas Renninger <trenn@...e.de>, lenb@...nel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [lm-sensors] 2.6.24-rc4 hwmon it87 probe fails

On Mon, 10 Dec 2007 10:31:27 +0800
Shaohua Li <shaohua.li@...el.com> wrote:
> This should exist in previous kernel (before we remove acpi
> motherboard driver) too. Basically it's a broken BIOS. Could below
> patch work around it?
> 
> Thanks,
> Shaohua
> 
> Index: linux/drivers/pnp/system.c
> ===================================================================
> --- linux.orig/drivers/pnp/system.c	2007-12-10
> 10:17:46.000000000 +0800 +++ linux/drivers/pnp/system.c

Thanks Shaohua, I tested this as well and it appears to have worked
around the issue for me.

Now, in dmesg, I get:

system 00:01: ioport range 0x290-0x29f has been reserved
(...)
system 00:01: ioport range 0x290-0x294 could not be reserved

In /proc/ioports I see:

0290-029f : pnp 00:01
  0290-0297 : it87
    0290-0297 : it87

The it87 sensor now works without disabling acpipnp

Mike Houston
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