Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030881AbWKOTBj (ORCPT ); Wed, 15 Nov 2006 14:01:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030882AbWKOTBj (ORCPT ); Wed, 15 Nov 2006 14:01:39 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:5516 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1030881AbWKOTBh (ORCPT ); Wed, 15 Nov 2006 14:01:37 -0500 Subject: Re: [PATCH] ALSA: hda-intel - Disable MSI support by default From: Arjan van de Ven To: Linus Torvalds Cc: Jeff Garzik , Takashi Iwai , David Miller , linux-kernel@vger.kernel.org In-Reply-To: References: <20061114.190036.30187059.davem@davemloft.net> <20061114.192117.112621278.davem@davemloft.net> <1163607889.31358.132.camel@laptopd505.fenrus.org> <455B5F01.7020601@garzik.org> Content-Type: text/plain Organization: Intel International BV Date: Wed, 15 Nov 2006 20:01:18 +0100 Message-Id: <1163617278.31358.149.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.1.1 (2.8.1.1-3.fc6) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1437 Lines: 32 On Wed, 2006-11-15 at 10:51 -0800, Linus Torvalds wrote: > So I think it's either: (a) irqbalance doesn't balance MSI interrupts at > all or (b) the MSI interrupt code doesn't honor balancing requests even if > it does. it's (A) right now for sure for irqbalanced at least. > The suspend problem reported by Stephen is another such thing - where MSI > itself wasn't a problem, but stupid (probably broken) firmware code at > wakeup broke it by an unforseen interaction. Again, that is probably > related to the fact that nobody has ever really tested it (ie firmware > "engineers" obviously didn't actually ever test anything with MSI enabled > and in use, and there really is no excuse for firmware messing with the > MSI setting - other than the usual "firmware is inevitably buggy" thing). ok so maybe this should be in the linux firmware kit.. it has suspend/resume tests after all ;) if there is a "do this then this to reproduce" scenario it's even likely it's trivial to put into a testcase... > > Linus -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/