linux-kernel - Re: [git pull request] ACPI patches for 2.6.34-rc6

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Message-ID: <20100507213600.GC28906@srcf.ucam.org>
Date:	Fri, 7 May 2010 22:36:00 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Len Brown <lenb@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [git pull request] ACPI patches for 2.6.34-rc6

On Fri, May 07, 2010 at 02:21:08PM -0700, Linus Torvalds wrote:
> On Fri, 7 May 2010, Matthew Garrett wrote:
> 
> > On Fri, May 07, 2010 at 02:06:53PM -0700, Linus Torvalds wrote:
> > > On Fri, 7 May 2010, Matthew Garrett wrote:
> > > > 
> > > > The spec says we can't. I've posted a patch to do so if it's still not 
> > > > set after we've tried doing it the right way, but I'm not keen on 
> > > > pushing it into a release at this point.
> > > 
> > > I'm ok with the "release at this point".
> > 
> > http://git.kernel.org/?p=linux/kernel/git/lenb/linux-acpi-2.6.git;a=commit;h=3b12303e6bda6e05579d899fb71cb3e9d3bc26ba
> 
> Well, is there any reason to have 'set_sci_en_on_resume' at all then?

I'd hope not, but it depends on what Windows does on resume. If it 
doesn't do the SMM call and just does the register write instead, then 
it may be that some machines are on that list because the SMM call 
breaks them rather than because they need the register to be set by 
hand. I'm planning on instrumenting it to check, but haven't had time to 
do so yet.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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