Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932625Ab3CRWEi (ORCPT ); Mon, 18 Mar 2013 18:04:38 -0400 Received: from cantor2.suse.de ([195.135.220.15]:39143 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932121Ab3CRWEc (ORCPT ); Mon, 18 Mar 2013 18:04:32 -0400 Date: Mon, 18 Mar 2013 23:04:21 +0100 (CET) From: Jiri Kosina To: Daniel Vetter Cc: Yinghai Lu , Harald Arnesen , Kernel development list , "Rafael J. Wysocki" , Peter Hurley , Alan Stern , Thomas Meyer , Shawn Starr , USB list , linux-acpi@vger.kernel.org, Bjorn Helgaas , linux-pci@vger.kernel.org, Daniel Vetter , Imre Deak , Daniel Kurtz , dri-devel@lists.freedesktop.org Subject: Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) In-Reply-To: <20130318191903.GS9021@phenom.ffwll.local> Message-ID: References: <1460519.ejNFI1DrGk@vostro.rjw.lan> <1363280764.26318.4.camel@thor.lan> <5657408.cYX6iimiA4@vostro.rjw.lan> <5142E7F0.4020002@gmail.com> <20130318191903.GS9021@phenom.ffwll.local> User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1015 Lines: 25 On Mon, 18 Mar 2013, Daniel Vetter wrote: > Yep, there's a big comment in the irq handler for that chipset that we > have a gaping race with when using MSI interrupts. Although the comment > bodly claims that the race is small enough to avoid the dreaded "nobody > cared" message. Looks like gmbus is good at hitting that race - on newer > chips it already brought up a similar race in handling pch interrupts. I see ... will target my focus in that direction, thanks. > Can you please give the below patch a whirl? It removes the probably race > msi race avoidance code and replaces it with the same trick Paulo used to > fix pch irq handling races. Unfortunately it didn't change anything, the spurious interrupt report is still there. -- Jiri Kosina SUSE Labs -- 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/