From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750981AbWGDNCo (ORCPT ); Tue, 4 Jul 2006 09:02:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750775AbWGDNCo (ORCPT ); Tue, 4 Jul 2006 09:02:44 -0400 Received: from ns2.suse.de ([195.135.220.15]:20894 "EHLO mx2.suse.de") by vger.kernel.org with ESMTP id S1750981AbWGDNCo (ORCPT ); Tue, 4 Jul 2006 09:02:44 -0400 Date: Tue, 04 Jul 2006 15:02:34 +0200 Message-ID: From: Takashi Iwai To: Clemens Ladisch Cc: Randy Dunlap , lkml , James@superbug.demon.co.uk, akpm Subject: Re: [Ubuntu PATCH] FIx no mpu401 interface can cause hard freeze In-Reply-To: <1152004172.44aa304cac758@www.domainfactory-webmail.de> References: <44A98261.1000300@oracle.com> <1152004172.44aa304cac758@www.domainfactory-webmail.de> User-Agent: Wanderlust/2.12.0 (Your Wildest Dreams) SEMI/1.14.6 (Maruoka) FLIM/1.14.7 (=?ISO-8859-4?Q?Sanj=F2?=) APEL/10.6 MULE XEmacs/21.5 (beta25) (eggplant) (+CVS-20060326) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At Tue, 04 Jul 2006 11:09:32 +0200, Clemens Ladisch wrote: > > Randy Dunlap wrote: > > This patch fixes the remaining instances in our tree where a non- > > existent mpu401 interface can cause a hard freeze when i/o is > > issued. > > > > sound/pci/emu10k1/emu10k1x.c > > sound/pci/emu10k1/emumpu401.c > > These drivers are for chips where we know that an MPU-401 interface > exists. > > Are there any freezes on these devices that can be resolved by this > patch? Maybe this fix is irrelevant. But it's anyway better to check the errors there. My rough guess of the culprit is the spin deadlock through snd-rtctimer. Takashi