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
next prev parent 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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