Re: [PATCH] pci-quirks: disable MSI on RS400-200 and RS480, take#2

From: Tejun Heo
Date: Wed May 09 2007 - 11:51:22 EST


Chuck Ebbert wrote:
> Tejun Heo wrote:
>> MSI doesn't work on RS400-200 and RS480 requiring pci=nomsi kernel
>> boot parameter for ahci to work. This patch renames quirk_svw_msi()
>> to quirk_disable_all_msi() and use it to disable MSI on those chips.
>>
>> http://thread.gmane.org/gmane.linux.ide/17820
>> http://thread.gmane.org/gmane.linux.ide/17516
>> https://bugzilla.novell.com/show_bug.cgi?id=263893
>>
>
> FWIW several distros have turned off MSI by default and added
> a "pci=msi" option to enable it.

Yeah, it seem to cause a lot of problems on certain chips but I think
the correct path is to add PCI quirks for those. Most MSI problems I've
seen are on these ATI chips. Do you happen to know any other?

Thanks.

--
tejun
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