linux-kernel - Re: MCP limit log messages, 2.6.36-rc4

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Message-ID: <20100928101824.7dd1a44e@jbarnes-desktop>
Date:	Tue, 28 Sep 2010 10:18:24 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	tim.gardner@...onical.com
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: MCP limit log messages, 2.6.36-rc4

On Tue, 28 Sep 2010 10:34:21 -0600
Tim Gardner <tim.gardner@...onical.com> wrote:

> On 09/24/2010 10:18 AM, Jesse Barnes wrote:
> > On Fri, 24 Sep 2010 06:46:45 +0800
> > Tim Gardner<tim.gardner@...onical.com>  wrote:
> >> Its just a debug hack which I wrote (that I mentioned in the first
> >> email) so I could figure out why the driver was complaining.
> >
> > Oh sorry, missed that.  An upstream patch for that would be welcome as
> > well.
> >
> >> I'll be back from Asia by Monday and will give these patches a try.
> >
> > Great, as I said you may still see spurious "over power" conditions,
> > but that's due to a bug in the i915 driver.
> >
> 
> With these 3 patches applied the MCP log message noise goes away. The 
> 4th patch (also applied) is the debug patch mentioned in my first email 
> (if you're still interested in it). This is on top of Linus tree at 
> 830c55a673537ca33ef4689fb5f20c2d66d98519 (plus some Ubuntu cruft).
> 
> The only 'intel ips' messages left in the log are these:
> 
> intel ips 0000:00:1f.6: Warning: CPU TDP doesn't match expected value 
> (found 25, expected 35)
> intel ips 0000:00:1f.6: PCI INT C -> GSI 18 (level, low) -> IRQ 18
> intel ips 0000:00:1f.6: IPS driver initialized, MCP temp limit 95

All looks good.

Patch is a nice improvement too; please send it over to the x86
platform driver list and cc Matthew Garrett so he can apply it.

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center
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