Message-ID: <46421FCA.7010807@garzik.org>
Date: Wed, 09 May 2007 15:23:54 -0400
From: Jeff Garzik <jeff@garzik.org>
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To: Chuck Ebbert <cebbert@redhat.com>
CC: Tejun Heo <htejun@gmail.com>, Greg K-H <greg@kroah.com>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       IDE/ATA development list <linux-ide@vger.kernel.org>,
       =?ISO-8859-1?Q?Mat=ED=ADas_Alejandro_Torres?= <torresmat@gmail.com>
Subject: Re: [PATCH] pci-quirks: disable MSI on RS400-200 and RS480, take
 #2
References: <4641BD26.1020501@gmail.com> <4641EAA5.4030409@redhat.com> <4641EDDC.1020102@gmail.com> <4641EF46.2090506@redhat.com>
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Chuck Ebbert wrote:
> Tejun Heo wrote:
>>> 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?
> 
> We had devices that didn't do MSI right, e.g. forcedeth and others I
> can't recall now.

AFAIK that's a broken diagnosis.   It's the system, not the device, that 
is problematic.

	Jeff


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