linux-kernel - Re: 2.6.23-rc8-mm[12] - the amazing disappearing MSI IRQ

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Message-ID: <13221.1191812048@turing-police.cc.vt.edu>
Date:	Sun, 07 Oct 2007 22:54:08 -0400
From:	Valdis.Kletnieks@...edu
To:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.23-rc8-mm[12] - the amazing disappearing MSI IRQ

On Sun, 07 Oct 2007 00:51:32 EDT, Valdis.Kletnieks@...edu said:
> I've also seen the eth0 MSI IRQ evaporate, leaving *two* 'none-edge' IRQs,
> but I can't replicate it at the moment, as it seems to happen pseudo-randomly.

Ignore this part - the problem is confined to the HDA-Intel driver.

I've verified the eth0 was a red herring - what would happen is if I booted
it while undocked, the startup scripts would try to ifconfig it up, find no
link on the device, and then ifconfig it down, at which point /proc/interrupts
would show it as 'none-edge' because at one time there *had* been interrupts
on it when it was 'PCI-MSI-edge', but it was then turned off again.

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