From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751548AbWGMMOt (ORCPT ); Thu, 13 Jul 2006 08:14:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751547AbWGMMOs (ORCPT ); Thu, 13 Jul 2006 08:14:48 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:2201 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1751545AbWGMMOs (ORCPT ); Thu, 13 Jul 2006 08:14:48 -0400 Subject: Re: annoying frequent overcurrent messages. From: Arjan van de Ven To: Pavel Machek Cc: Alan Stern , Dave Jones , Kernel development list , David Brownell In-Reply-To: <20060713120815.GA5727@elf.ucw.cz> References: <200607111747.13529.david-b@pacbell.net> <20060713120815.GA5727@elf.ucw.cz> Content-Type: text/plain Date: Thu, 13 Jul 2006 14:14:38 +0200 Message-Id: <1152792878.3024.41.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2006-07-13 at 14:08 +0200, Pavel Machek wrote: > Hi! > > > > I have a box that's having its dmesg flooded with.. > > > > > > hub 1-0:1.0: over-current change on port 1 > > > hub 1-0:1.0: over-current change on port 2 > > > hub 1-0:1.0: over-current change on port 1 > > > hub 1-0:1.0: over-current change on port 2 > > ... > > > > > over and over again.. > > > The thing is, this box doesn't even have any USB devices connected to it, > > > so there's absolutely nothing I can do to remedy this. > > > > Well, overcurrent is a potentially dangerous situation. That's why it > > gets reported with dev_err priority. > > Well, I see overcurrents all the time while doing suspend/resume... > > Why is it dangerous? USB should survive plugging something that > connects +5V and ground. It may turn your machine off, but that should > be it...? it's fun if your main storage resides near it on the same hub... like your suspend device (now ok suspend-to-usb-disk is silly I suppose, but I can think of some really cool usage models that that allows in an office-less office)