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

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Message-Id: <1163644170.5940.348.camel@localhost.localdomain>
Date:	Thu, 16 Nov 2006 13:29:30 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Roland Dreier <rdreier@...co.com>
Cc:	Jeff Garzik <jeff@...zik.org>, Linus Torvalds <torvalds@...l.org>,
	David Miller <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, tiwai@...e.de
Subject: Re: [PATCH] ALSA: hda-intel - Disable MSI support by default

On Tue, 2006-11-14 at 20:30 -0800, Roland Dreier wrote:
>  > That reminds me of a potential driver bug -- MSI-aware drivers need to
>  > call pci_intx(pdev,0) to turn off the legacy PCI interrupt, before
>  > enabling MSI interrupts.
> 
> Huh?  The device can't generate any legacy interrupts once MSI is
> enabled.  As the PCI spec says:

No, the device is _not_supposed_to_ :-)

Cheers,
Ben.

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