Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936363AbXJST6i (ORCPT ); Fri, 19 Oct 2007 15:58:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934609AbXJST6F (ORCPT ); Fri, 19 Oct 2007 15:58:05 -0400 Received: from e6.ny.us.ibm.com ([32.97.182.146]:43874 "EHLO e6.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753761AbXJST6B (ORCPT ); Fri, 19 Oct 2007 15:58:01 -0400 Date: Fri, 19 Oct 2007 14:57:49 -0500 To: Shane Huang Cc: davem@davemloft.net, gregkh@suse.de, htejun@gmail.com, brice.goglin@gmail.com, david.gaarenstroom@gmail.com, linux-kernel@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz, shane.huang@amd.com, jgarzik@pobox.com, linux-ide@vger.kernel.org Subject: Re: [patch] PCI: disable MSI on more ATI NorthBridges Message-ID: <20071019195749.GK29903@austin.ibm.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 From: linas@austin.ibm.com (Linas Vepstas) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1110 Lines: 32 On Fri, Oct 19, 2007 at 09:17:23PM +0800, Shane Huang wrote: > Since we have little experience on PCI and MSI here, we had to try to As someone else pointed out, AMD should have *lots* of people with pci and msi experience on the payroll. (Folks here buy AMD-designed pci chips ...) > ONLY > comment out the pci_intx() call in drivers/ata/ahci.c > My system can boot up too with MSI enabled! > > So does it mean that the root cause is our SB700 SATA controller > has a hardware bug where setting INTX_DISABLE in the PCI COMMAND > register masks MSI interrupts too? That's what it sounds like, to me. > And what is the software solution or workaround? Not sure. Sounds like the device driver needs a quirk for this part. The over-worked Jeff Garzik is the maintainer for that driver. You should probably provide the pci device id for this beast. --linas - 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/