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

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Date:	Wed, 15 Nov 2006 13:32:02 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Takashi Iwai <tiwai@...e.de>
CC:	David Miller <davem@...emloft.net>, torvalds@...l.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: hda-intel - Disable MSI support by default

Takashi Iwai wrote:
> The snd-hda-intel driver has a test of MSI, but it seems not working
> on every machine.  It caused non-cared interrupts and the kernel
> disabled that irq.

Possibly the test was broken.  Did you have IRQF_DISABLED and 
IRQF_SHARED flags set?


>> Given current experience maybe white-lists are in fact the way
>> to go.
> 
> Could it be whitelisted in the PCI driver side?  I don't think it's
> good to have a huge white/blacklist in each device driver.

Certainly, we should not have such lists in the driver.  I don't think 
anybody wants that.

	Jeff



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