linux-kernel - Re: 2.6.18 suspend regression on Intel Macs

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Message-Id: <200610110237.54906.len.brown@intel.com>
Date:	Wed, 11 Oct 2006 02:37:54 -0400
From:	Len Brown <len.brown@...el.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	Pavel Machek <pavel@....cz>,
	Frédéric Riss <frederic.riss@...il.com>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: 2.6.18 suspend regression on Intel Macs

On Tuesday 10 October 2006 17:28, Matthew Garrett wrote:
> On Tue, Oct 10, 2006 at 12:41:28PM +0200, Arjan van de Ven wrote:
> 
> > "fix" for some value of the word.
> > The problem is that this is very much against the spec, and also quite
> > likely breaks a bunch of machines...
> 
> It works fine under Windows, which suggests that the Windows behaviour 
> is to reenable the bit. 

To me it suggests that both Windows and MacOS provoke the firmware
to re-enable this bit -- it doesn't suggest that the OS is doing it.

> I wouldn't really expect any existing hardware  
> to expect any other sort of behaviour.

I would.  In the known universe, the Mac-mini is the only machine that
seems to need us to explicitly set SCI_EN.

-Len
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