From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763184AbYFESu4 (ORCPT ); Thu, 5 Jun 2008 14:50:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761607AbYFESuk (ORCPT ); Thu, 5 Jun 2008 14:50:40 -0400 Received: from hpsmtp-eml14.kpnxchange.com ([213.75.38.114]:25980 "EHLO hpsmtp-eml14.kpnxchange.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761568AbYFESuh (ORCPT ); Thu, 5 Jun 2008 14:50:37 -0400 From: Frans Pop To: linux-kernel@vger.kernel.org Subject: Re: 2.6.25.1, stray noise in dmesg Date: Thu, 5 Jun 2008 20:50:33 +0200 User-Agent: KMail/1.9.9 Cc: Greg KH , Gene Heskett References: <200805021126.15225.gene.heskett@gmail.com> <200805021910.45266.elendil@planet.nl> In-Reply-To: <200805021910.45266.elendil@planet.nl> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200806052050.34537.elendil@planet.nl> X-OriginalArrivalTime: 05 Jun 2008 18:50:35.0159 (UTC) FILETIME=[09CF9270:01C8C73D] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 02 May 2008, Frans Pop wrote: > Gene Heskett wrote: > > I just rebooted to 2.6.25.1, and was momentarily panic'd by the > > messages going by early in the boot, but on putting 2&2 together, > > found they were just noise. > > > > From dmesg: > > [root@coyote ~]# dmesg|grep unable > > [ 2.093502] hub 1-0:1.0: unable to enumerate USB device on port 2 > > [ 2.248475] hub 1-0:1.0: unable to enumerate USB device on port 5 > > [ 2.454444] hub 1-0:1.0: unable to enumerate USB device on port 6 > > I'm seeing these too (hub 5-0): > hub 5-0:1.0: USB hub found > hub 5-0:1.0: unable to enumerate USB device on port 5 > hub 5-0:1.0: unable to enumerate USB device on port 7 I'm going to bring this up one last time. Google currently already shows 1060 hits for this new error: http://www.google.com/search?q=%22unable+to+enumerate+USB+device%22&ie=UTF-8&oe=UTF-8 This one is particularly interesting as it shows quite a few systems are affected: https://bugzilla.redhat.com/show_bug.cgi?id=446845 Given its apparent prevalence I'm still wondering whether this is really broken hardware in all cases or that there could be an error in detection in some cases. Note that in my case this is not with an external hub or anything, but just the internal USB ports of the system. One thing with this message is that because of its "error" status, it also shows when the system is booted with the "quiet" option. Could it be an option to apply the following patch so that at least that is avoided? --- From: Frans Pop usb core: lower severity of 'unable to enumerate USB device' message This message is relatively common and in most cases can be safely ignored. Lower its severity from 'err' to 'notice' so it is not printed on the console when systems are booted with the "quiet" boot parameter. Signed-off-by: Frans Pop diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 8eb4da3..ea1ef37 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2756,7 +2756,7 @@ loop: if (hub->hdev->parent || !hcd->driver->port_handed_over || !(hcd->driver->port_handed_over)(hcd, port1)) - dev_err(hub_dev, "unable to enumerate USB device on port %d\n", + dev_notice(hub_dev, "unable to enumerate USB device on port %d\n", port1); done: