Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751220AbWIMVzK (ORCPT ); Wed, 13 Sep 2006 17:55:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751222AbWIMVzK (ORCPT ); Wed, 13 Sep 2006 17:55:10 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:49546 "HELO iolanthe.rowland.org") by vger.kernel.org with SMTP id S1751220AbWIMVzJ (ORCPT ); Wed, 13 Sep 2006 17:55:09 -0400 Date: Wed, 13 Sep 2006 17:55:06 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: "Rafael J. Wysocki" cc: Andrew Morton , Mattia Dongili , Kernel development list , USB development list Subject: Re: [linux-usb-devel] 2.6.18-rc6-mm1 (-mm2): ohci resume problem In-Reply-To: <200609132332.57435.rjw@sisk.pl> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1245 Lines: 32 On Wed, 13 Sep 2006, Rafael J. Wysocki wrote: > > Try this patch instead. It looks for problems occurring a little earlier > > in the call chain. > > I've applied both patches at a time (I hope they don't conflict). > > The dmesg output is attached. The dmesg output shows the root-hub device state is set wrong. I have to leave now, so I can't give you another patch to try. You can experiment as follows... Look in drivers/usb/host/ehci-pci.c, at ehci_pci_resume(). The part of interest is everything following the "restart:" statement label. Try adding some ehci_dbg() lines in there (copy the form of the line just after restart:). We want to follow the value of hcd->self.root_hub->state. Initially it should be equal to USB_STATE_SUSPENDED (= 8), and it shouldn't change. But somewhere it is getting set to USB_STATE_CONFIGURED (= 7). I don't know where, but almost certainly somewhere in this routine. If you can find out where that happens, I'd appreciate it. Alan Stern - 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/