linux-kernel - Re: Regression in module wmi since 2.6.32 (bisected to commit 1caab3c)

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Message-ID: <4B353035.4050208@lwfinger.net>
Date:	Fri, 25 Dec 2009 15:35:49 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Carlos Corbacho <carlos@...angeworlds.co.uk>
CC:	Matthew Garrett <mjg@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>
Subject: Re: Regression in module wmi since 2.6.32 (bisected to commit 1caab3c)

On 12/25/2009 02:56 PM, Carlos Corbacho wrote:
> On Friday 25 December 2009 20:48:19 Larry Finger wrote:
>> If I modprobe wmi after the system is booted, the specific messages are as
>>  follows:
>>
>> ------------[ cut here ]------------
>> WARNING: at fs/sysfs/dir.c:477 sysfs_add_one+0xd6/0xee()
>> Hardware name: System Product Name
>> sysfs: cannot create duplicate filename
>> '/devices/virtual/wmi/05901221-D566-11D1-B2F0-00A0C9062910'
> 
> Interesting - what hardware is this? And can you post the DSDT?

The hardware is home-built with an ASUS M3N78-VM motherboard and an Athlon X2
6000 3.1G CPU running an x86_64 OS.

I ran the following commands per the instructions at
http://www.lesswatts.org/projects/acpi/overridingDSDT.php with the following
results:

=====================
desktop:~ # cp /proc/acpi/dsdt DSDT
desktop:~ # acpidump > acpidump.out
Wrong checksum for OEMB!
desktop:~ # acpixtract DSDT acpidump > DSDT.dat
desktop:~ # iasl -d DSDT.dat

Intel ACPI Component Architecture
AML Disassembler version 20081031 [Dec  3 2008]
Copyright (C) 2000 - 2008 Intel Corporation
Supports ACPI Specification Revision 3.0a

Loading Acpi table from file DSDT.dat
TableHeader length [0x62617420] greater than the input file size [0x35]
Could not get table from the file
==================

Do the messages indicate a BIOS problem? I have not updated for some time, and
would rather not do so unless necessary.

Should I attach the files DSDT.dat, acpidump.out, or DSDT?

Larry


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