Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754864AbWKOCkh (ORCPT ); Tue, 14 Nov 2006 21:40:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754866AbWKOCkh (ORCPT ); Tue, 14 Nov 2006 21:40:37 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:54235 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S1754864AbWKOCkg (ORCPT ); Tue, 14 Nov 2006 21:40:36 -0500 Message-ID: <455A7E21.7020701@garzik.org> Date: Tue, 14 Nov 2006 21:40:33 -0500 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.8 (X11/20061107) MIME-Version: 1.0 To: Linus Torvalds CC: Linux Kernel Mailing List , Takashi Iwai Subject: Re: [PATCH] ALSA: hda-intel - Disable MSI support by default References: <200611150059.kAF0xBTl009796@hera.kernel.org> <455A6EBF.7060200@garzik.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.7 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2199 Lines: 71 Linus Torvalds wrote: > > On Tue, 14 Nov 2006, Jeff Garzik wrote: >> :( Like AHCI, PCI MSI has -always- worked wonderfully for HD audio AFAIK. > > That "AFAIK" is shorthand for "As Far As I haven't read any of the > bug-reports but Know", right? None of the bug reports indicate Intel, thus following the well established pattern of "it works great on Intel, but not elsewhere" >> Is a whitelist patch forthcoming? > > Probably not. The advantages of MSI aren't all that obvious, and the > disadvantages seem to be that it just doesn't work all that well for some > people. > > The fact that it works for MOST people has absolutely zero relevance. > We've had too many frigging patches that have apparently been of the "this > works for me, I don't care if some other motherboard has problems" kind. > > See for example: > > http://lkml.org/lkml/2006/10/7/164 > > and yes, that HDA MSI _does_ seem to be causing problems. But not on Intel, hence the obvious whitelist question. > So don't blather about "MSI never causes problems". It's broken. Please > stop living in denial. > > When somebody can actually say what the huge advantages to MSI are that > it's worth using when > > (a) several motherboards are apparently known broken several non-Intel motherboards > (b) microsoft apparently is of the same opinion and _also_ doesn't use it Yeah well, that's sage advice only when it's sage advice. MS lags us by years. We do some bleeding, on the bleeding edge. > (c) the old non-MSI code works fine > > (d) there is apparently no fool-proof way to tell when it works and when > it doesn't. > > then please holler. Btw, I'm not even _interested_ in any advantages > unless you also have a solution for (d). Not a "it should work". I want to > hear something that is _guaranteed_ to work. if (intel) ... That has a track record of working. It's nice not to have to deal with shared interrupts. Jeff - 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/