linux-kernel - Re: [PATCH] ALSA: hda-intel - Disable MSI support by default

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Date:	Thu, 16 Nov 2006 13:24:19 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	David Miller <davem@...emloft.net>
Cc:	jeff@...zik.org, torvalds@...l.org, linux-kernel@...r.kernel.org,
	tiwai@...e.de
Subject: Re: [PATCH] ALSA: hda-intel - Disable MSI support by default


> Is this absolutely true?  I've never been sure about this point, and I
> was rather convinced after reading various documents that once you
> program up the MSI registers to start generating MSI this implicitly
> disabled INTX and this was even in the PCI specification.

I think it is in the spec, that doesn't mean all device vendors get it
right. I have a vendor spec under my eyes at the moment (sorry, can't
say what it is) which has exactly this bug.

Ben.


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