linux-kernel - Re: cx88 pci

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Message-Id: <DD4F5A27-64A9-4A16-B3B0-D825F9A88AAD@bluecamel.eml.cc>
Date:	Fri, 5 Oct 2007 08:04:04 -0400
From:	Scott <linux-kernel@...ecamel.eml.cc>
To:	linux-kernel@...r.kernel.org
Subject: Re: cx88 pci_abort messages


On Oct 4, 2007, at 11:52 AM, Scott wrote:

> I'm having what I think is a PCI bus problem.
>
> I have a ASUS P5B Intel 965 motherboard and a DVICO Fusion HDTV5 RT
> adapter on the PCI bus. When this adapter is recording (anything) I  
> see
> pci_abort messages repeating in the /var/log/messages file. As a  
> result
> I see some minor video corruption during playback. I've installed the
> adapter into a PCI slot that shares an IRQ with the onboard USB.
> However, I've also disabled all USB support in BIOS, so the adapter is
> the only thing on the IRQ, and still see the same errors.
>
> Any suggestions for further troubleshooting? Is this a PCI bus  
> quirk on
> this motherboard? A copy of my .config is at
> http://donpoo.net/kernel_config
>
> Oct  2 21:59:12 htpc cx88[0]: irq mpeg  [0x80000] pci_abort*
> Oct  2 21:59:12 htpc cx88[0]/2-mpeg: general errors: 0x00080000
> Oct  2 21:59:20 htpc cx88[0]: irq mpeg  [0x80000] pci_abort*
> Oct  2 21:59:20 htpc cx88[0]/2-mpeg: general errors: 0x00080000
> Oct  2 21:59:32 htpc cx88[0]: irq mpeg  [0x80000] pci_abort*
> Oct  2 21:59:32 htpc cx88[0]/2-mpeg: general errors: 0x0008000

I was poking around the PCI bus with setpci/lspci last night and  
tried adjusting the latency from 64 to 32. This didn't make a  
difference. I also changed my core2duo speedstep governor from  
ondemand to performance to prevent the CPUs from changing speed. I  
eventualy saw the same pci_abort message but I might have seen less  
of them.

Is there a way to log every device pci device that throws an  
interrupt? I'm thinking if I could find out which pci device was  
stealing the interrupt that I could disable it or look at the code  
and see what it was doing.

--
Scott 
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