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From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Ákos Maróy" <akos@maroy.hu>, "Rafael J. Wysocki" <rjw@sisk.pl>,
	"Kernel development list" <linux-kernel@vger.kernel.org>,
	"Greg KH" <gregkh@suse.de>,
	"USB list" <linux-usb@vger.kernel.org>
Subject: Re: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020
Date: Thu, 25 Feb 2010 11:52:49 -0800	[thread overview]
Message-ID: <20100225195249.GA5245@xanatos> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1002251430470.1686-100000@iolanthe.rowland.org>

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

  reply	other threads:[~2010-02-25 19:53 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-23  8:29 pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020 Ákos Maróy
2010-02-23 21:17 ` Rafael J. Wysocki
2010-02-24 16:40   ` Alan Stern
2010-02-24 22:36     ` Ákos Maróy
2010-02-25 15:27       ` Alan Stern
2010-02-25 16:43         ` Ákos Maróy
2010-02-25 17:46           ` Alan Stern
2010-02-25 19:04             ` Sarah Sharp
2010-02-25 19:36               ` Alan Stern
2010-02-25 19:52                 ` Sarah Sharp [this message]
2010-02-25 22:37                   ` Ákos Maróy
2010-02-26  0:16                     ` Sarah Sharp
2010-02-26 16:12                       ` Alan Stern
2010-02-26 16:32                         ` Sarah Sharp
2010-02-27  8:02                       ` Ákos Maróy
2010-03-02  0:48                         ` Sarah Sharp
2010-02-25 21:05             ` Ákos Maróy
2010-02-25 22:23               ` Alan Stern
2010-02-25 17:07         ` Ákos Maróy
2010-03-04 13:55         ` Ákos Maróy
2010-02-26  5:21       ` Edward Shao
2010-02-27  8:03         ` Ákos Maróy

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