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From: Bjorn Helgaas <>
To: Greg KH <>
	Andrew Morton <>,,,
	Zhao Yakui <>,
	Li Shaohua <>,
	Thomas Renninger <>, Adam Belay <>,
	Len Brown <>
Subject: Re: Linux
Date: Thu, 10 Jan 2008 09:06:47 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Wednesday 09 January 2008 08:49:52 pm Greg KH wrote:
> On Wed, Jan 02, 2008 at 01:42:23PM -0700, Bjorn Helgaas wrote:
> > The patch below was put in as a fix for
> >  It apparently
> > does make 9514 go away, but only by coincidence.  There are a
> > couple other ideas about fixing 9514.  My proposed patch is
> > attached in the bugzilla.
> > 
> > The .12 patch reduces the number of resources we reserve from
> > 24 to 8 ioport regions and from 12 to 4 mmio regions per PNP device.
> > It also removes a warning about regions we ignore.
> That patch was merely a revert of a prior patch, it did not "do"
> anything new at all :)
> > Obviously, we want to reserve ALL the regions for PNP devices,
> > and Thomas is working on a patch for that (which I hope will be
> > ready for 2.6.25).  But in the meantime, the .12 patch makes it
> > more likely that we will have resource conflicts with PNP devices.
> > 
> > appears to be
> > such a conflict.
> > 
> > I think the patch below should be removed from the stable series.
> What do you mean "removed"?  It was a revert of a prior patch, as this
> patch was reported to cause real problems.
> Do you want me to add it back, and then add another patch?  If so, can
> you please send the requested patches to so I can do
> it?

Stepping back, the biggest part of the problem is that I replaced the
ACPI motherboard driver, which reserved all resources, with the PNP
motherboard driver, which currently can reserve only a limited number
of resources, because I didn't realize that restriction.

So we've had a variety of problems, and we've tried to address them
with hacks like increasing the PNP limits.  I think we need to put
back the ACPI motherboard driver until we have dynamic PNP resources.
We will also need an it87 change to deal with

I'll work these up and post them soon.


      reply	other threads:[~2008-01-10 16:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-18 22:45 Greg Kroah-Hartman
2007-12-18 22:46 ` Greg Kroah-Hartman
2008-01-02 20:42   ` Bjorn Helgaas
2008-01-03  1:16     ` Shaohua Li
2008-01-10  3:49     ` Greg KH
2008-01-10 16:06       ` Bjorn Helgaas [this message]

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