linux-kernel - Re: [PATCH] Unbreak MSI on ATI devices

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Date:	Thu, 04 Jan 2007 13:59:37 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	Petr Vandrovec <petr@...drovec.name>
Cc:	jeff@...zik.org, linux-kernel@...r.kernel.org, akpm@...l.org
Subject: Re: [PATCH] Unbreak MSI on ATI devices

 > So my question is - what is real reason for disabling INTX when in MSI mode?
 > According to PCI spec it should not be needed, and it hurts at least chips
 > listed below:
 > 
 > 00:13.0 0c03: 1002:4374 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
 > 00:13.1 0c03: 1002:4375 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
 > 00:13.2 0c03: 1002:4373 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller 

heh... I'm not gloating or anything... but I am glad that some ASIC
designer was careless enough to prove me right when I said going
beyond what the PCI spec requires is dangerous.

 - R.
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