Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933531Ab0BYTxU (ORCPT ); Thu, 25 Feb 2010 14:53:20 -0500 Received: from mga12.intel.com ([143.182.124.36]:64029 "EHLO azsmga102.ch.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933028Ab0BYTxS (ORCPT ); Thu, 25 Feb 2010 14:53:18 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.49,541,1262592000"; d="scan'208";a="248183643" Date: Thu, 25 Feb 2010 11:52:49 -0800 From: Sarah Sharp To: Alan Stern Cc: =?iso-8859-1?Q?=C1kos_Mar=F3y?= , "Rafael J. Wysocki" , Kernel development list , Greg KH , USB list Subject: Re: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020 Message-ID: <20100225195249.GA5245@xanatos> References: <20100225190452.GA4184@xanatos> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1108 Lines: 26 On Thu, Feb 25, 2010 at 02:36:02PM -0500, Alan Stern wrote: > On Thu, 25 Feb 2010, Sarah Sharp wrote: > > > > > now, I unplug the USB DVD drive: > > > > > > > > Feb 25 17:35:38 tonkachi kernel: [ 276.374282] xhci_hcd 0000:02:00.0: > > > > WARN: transfer error on endpoint > > > > Feb 25 17:35:39 tonkachi kernel: [ 276.728151] xhci_hcd 0000:02:00.0: > > > > WARN: transfer error on endpoint > > > > Feb 25 17:35:39 tonkachi kernel: [ 276.728819] xhci_hcd 0000:02:00.0: > > > > WARN: transfer error on endpoint > > Shouldn't there be some messages here about "USB disconnect"? This > suggests there's something wrong with the root hub. True. I can't tell exactly what's going on without CONFIG_USB_XHCI_HCD_DEBUGGING. It's possible the xHCI host never notified the driver of the disconnect, or there's a bug in the xHCI hub emulation code. Sarah Sharp -- 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/