linux-kernel - Re: [i8k] GIT current's i8k module does not load on Inspiron 8200 laptops

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Message-ID: <20101031234443.GA8332@bombadil.infradead.org>
Date:	Sun, 31 Oct 2010 19:44:43 -0400
From:	Kyle McMartin <kyle@...artin.ca>
To:	Marc Koschewski <marc@...nowledge.org>
Cc:	Linux-LKLM <linux-kernel@...r.kernel.org>,
	Massimo Dal Zotto <dz@...ian.org>
Subject: Re: [i8k] GIT current's i8k module does not load on Inspiron 8200
 laptops

On Sat, Oct 02, 2010 at 10:19:08AM +0200, Marc Koschewski wrote:
> Hey folks,
> 
> the i8k module does no longer load on my DELL Inspiron 8200 laptops. It says this on one machine:
> 
> Oct  2 10:06:01 marc kernel: [   16.239867] i8k: unable to get SMM Dell
> signature
> 
> Due to git log there's nothing changed for a while and I cannot figure out, what's the problem. Does anyone of you?
> 

Apparently this is a recent GCC issue caused by optimization of the
inline asm. Making the asm volatile seems to work around the problem
according to reporters.

See https://bugzilla.redhat.com/show_bug.cgi?id=647677 and
https://bbs.archlinux.org/viewtopic.php?pid=780692#p780692.

regards, Kyle
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