From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268199AbUHKUgt (ORCPT ); Wed, 11 Aug 2004 16:36:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268244AbUHKUfF (ORCPT ); Wed, 11 Aug 2004 16:35:05 -0400 Received: from atlrel6.hp.com ([156.153.255.205]:34774 "EHLO atlrel6.hp.com") by vger.kernel.org with ESMTP id S268232AbUHKUdx (ORCPT ); Wed, 11 Aug 2004 16:33:53 -0400 From: Bjorn Helgaas To: Adrian Bunk Subject: Re: 2.6.8-rc4-mm1 doesn't boot Date: Wed, 11 Aug 2004 14:33:50 -0600 User-Agent: KMail/1.6.2 Cc: Andrew Morton , linux-kernel@vger.kernel.org References: <20040810002110.4fd8de07.akpm@osdl.org> <200408101646.57542.bjorn.helgaas@hp.com> <20040810235621.GZ26174@fs.tum.de> In-Reply-To: <20040810235621.GZ26174@fs.tum.de> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200408111433.50641.bjorn.helgaas@hp.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 10 August 2004 5:56 pm, Adrian Bunk wrote: > On Tue, Aug 10, 2004 at 04:46:57PM -0600, Bjorn Helgaas wrote: > > On Tuesday 10 August 2004 11:32 am, Adrian Bunk wrote: > > > On Tue, Aug 10, 2004 at 09:59:18AM -0600, Bjorn Helgaas wrote: > > > > On Tuesday 10 August 2004 9:09 am, Adrian Bunk wrote: > > > > > 2.6.8-rc3-mm1 boots fine on my computer. > > > > > 2.6.8-rc4-mm1 doesn't boot. > > > > > 2.6.8-rc4-mm1 with pci=routeirq boots. > > > It happens before the > floppy0: no floppy controllers found > line. > > Could there be a problem because the floppy driver doesn't find > anything (there's currently no floppy drive in my computer)? Not only is your machine floppy drive-less, but the driver thinks you don't even have a floppy *controller*, which I assume is separate from the actual drive. What mainboard do you have? Does it boot without "pci=routeirq" if you turn CONFIG_BLK_DEV_FD off? The code in the floppy_init() -> user_reset_fdc() -> WAIT() -> wait_til_done() -> reset_fdc() path looks pretty scary if there really is no controller out there. I'd feel much better if we at least tried to use ACPI to figure out whether we have a controller before we try to talk to it. All that aside, I still don't see how the pci=routeirq change would affect the floppy driver. It does request_irq(6, ...), and it is interesting that you have this: ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 6 ACPI: PCI interrupt 0000:00:04.0[A] -> GSI 6 (level, low) -> IRQ 6 which is for your NIC. But the floppy controller isn't a PCI device, so the LNKD enable shouldn't matter to it. Let's see... you're using the PIC model. Maybe the floppy driver depends on the ACPI_IRQ_MODEL_PIC stuff in acpi_register_gsi()? Can you post the contents of /proc/interrupts with the floppy driver and "pci=routeirq"? It seems weird to have the floppy and the NIC share an IRQ, but it looks like that's what should be happening. Bjorn