linux-kernel - RE: [patch] PCI: disable MSI on more ATI NorthBridges

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Date:	Tue, 23 Oct 2007 17:39:22 +0800
From:	"Shane Huang" <Shane.Huang@....com>
To:	"David Miller" <davem@...emloft.net>, barkalow@...ervon.org
cc:	jeff@...zik.org, linas@...tin.ibm.com, gregkh@...e.de,
	htejun@...il.com, brice.goglin@...il.com,
	david.gaarenstroom@...il.com, linux-kernel@...r.kernel.org,
	linux-pci@...ey.karlin.mff.cuni.cz, linux-ide@...r.kernel.org,
	brice@...i.com, "Shane Huang" <Shane.Huang@....com>
Subject: RE: [patch] PCI: disable MSI on more ATI NorthBridges

Hi David:

> I think this pretty much sums up the situation accurately.
> 
> My suggestion is:
> 
> 1) Leave the pci_intx() twiddling code in drivers/pci/msi.c
> 
> 2) Add quirks for "INTX_DISABLE turns off MSI too", this sets
>    a flag in the pci_dev.
> 
> 3) The pci_intx() calls in drivers/pci/msi.c are skipped if this
>    flag from #2 is set.
> 
> 4) Add quirk entries for drivers/net/tg3.c chips and these SATA
>    devices we are learning about here, as well as any others we
>    are aware of right now.
> 
> 5) Remove the pci_intx() workaround code from drivers/net/tg3.c
>    and elsewhere.

This quirk seems good to me. Waiting for your final decision....

This SB700 SATA controller MSI/INTx problem has been reported to our
hardware team. I will forward the update information or response to
you when I get any from HW team.


Thanks
Shane



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