linux-kernel - Re: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device 8087:0020

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Message-ID: <Pine.LNX.4.44L0.1002261111330.2029-100000@iolanthe.rowland.org>
Date:	Fri, 26 Feb 2010 11:12:50 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
cc:	Ákos Maróy <akos@...oy.hu>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>, USB list <linux-usb@...r.kernel.org>
Subject: Re: pm_op(): usb_dev_suspend+0x0/0x10 returns -2 on USB device
 8087:0020

On Thu, 25 Feb 2010, Sarah Sharp wrote:

> > at this point, rmmod xhci doesn't even work anymore, I get stuff during
> > / around the rmmod like:
> > 
> > Feb 25 23:34:24 tonkachi kernel: [  230.133711] xhci_hcd 0000:02:00.0:
> > remove, state 1
> 
> Aw, man, it looks like your xHCI disconnected from the bus.  Something
> was seriously wrong with the hardware.

Why do you say that?  Isn't this exactly the sort of thing you expect 
to see in the log when xhci-hcd is unloaded?

Alan Stern

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