From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753108AbXCZUru (ORCPT ); Mon, 26 Mar 2007 16:47:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753121AbXCZUru (ORCPT ); Mon, 26 Mar 2007 16:47:50 -0400 Received: from eazy.amigager.de ([213.239.192.238]:40746 "EHLO eazy.amigager.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753108AbXCZUrt (ORCPT ); Mon, 26 Mar 2007 16:47:49 -0400 Date: Mon, 26 Mar 2007 22:47:44 +0200 From: Tino Keitel To: Alan Stern Cc: Oliver Neukum , linux-usb-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [linux-usb-devel] possible USB regression with 2.6.21-rc4: iPod doesn't work Message-ID: <20070326204744.GA24762@dose.home.local> Mail-Followup-To: Alan Stern , Oliver Neukum , linux-usb-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org References: <20070326185900.GA27068@dose.home.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 26, 2007 at 16:28:34 -0400, Alan Stern wrote: > On Mon, 26 Mar 2007, Tino Keitel wrote: > > > Attached is a dmesg output with CONFIG_USB_DEBUG and CONFIG_USB_SUSPEND > > enabled. > > > > There are no messages from the iPod because, well, nothing happens when > > I plug it in. I tried it 3 times. > > I don't understand. The dmesg log you attached shows the iPod was > detected and recognized as scsi5 (sdc). Then some time later (can't tell > how much later because you don't have CONFIG_PRINTK_TIME set) it was > unplugged and plugged back in. The second time it was detected and > recognized as scsi6 (also sdc). And then the log ends. Not in the attached dmesg output from the above mail. There are not iPod related messages it it, but I plugged it in 2 times. I rebootet with the same kernel version without CONFIG_USB_SUSPEND right after this and the iPod was recognized at the first try. > > Why do you say there are no messages from the iPod? Grepping for "iPod" > in the log shows that the string appears 4 times. If nothing happened > when you plugged it in, how could the computer have known the device was > an iPod? > > > The strange thing is: when I trigger > > a suspend or shutdown, > > You mean you suspend or shutdown the computer? Or the iPod? The computer. > > > then the "Do not disconnect" message shows up on > > the iPod, which means that the computer regognized it as a storage > > device. > > What's so strange about that? Isn't that exactly what's supposed to > happen? Well, it isn't recognized by a normal running system, only during shutdown/suspend. Regards, Tino