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Message-ID: <Pine.LNX.4.44L0.0808271729380.2137-100000@iolanthe.rowland.org>
Date:	Wed, 27 Aug 2008 17:30:40 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	Linux-pm mailing list <linux-pm@...ts.linux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.27-rc2 USB suspend regression

On Wed, 20 Aug 2008, Jeremy Fitzhardinge wrote:

> Alan Stern wrote:
> > On Wed, 20 Aug 2008, Jeremy Fitzhardinge wrote:
> >
> >   
> >> Using the Fedora Rawhide kernel RPM "2.6.27-0.238.rc2.fc10.i686"
> >> (kernel-2.6.27-0.238.rc2.fc10.i686), I'm seeing suspend to ram
> >> failures.  The suspend seems to go OK, but then I just get endless:
> >>
> >> usb 5-1: uhci_result_common: failed with status 440000
> >>
> >> messages, with occasional flickers of something else being printed
> >> (perhaps).  The machine is otherwise unresponsive.
> >>     
> >
> > You could comment out that error message in order to see what else is 
> > in the log.  It is located in drivers/usb/host/uhci-q.c in the 
> > uhci_result_common() function.
> >
> > You could try running -rc3 instead of -rc2, although that probably 
> > won't make much difference.
> >
> > What USB devices do you have on the failing system?  In particular,
> > what is 5-1?  If you unplug it before suspending, does the problem go
> > away?  (It certainly should!)
> >
> >   
> 
> No external usb devices.  There are three internal USB devices:
> Bluetooth, a Sierra CDMA modem thingy and a fingerprint reader.
> 
> $ lsusb
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 005 Device 003: ID 0483:2016 SGS Thomson Microelectronics
> Fingerprint Reader
> Bus 005 Device 002: ID 0a5c:2110 Broadcom Corp. Bluetooth Controller
> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 003: ID 1199:0218 Sierra Wireless, Inc. MC5720 Wireless Modem
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> 
> The rfkill switch "unplugs" the two wireless devices, so I'll try that
> before suspending next time (if I remember).

Is this still a problem?

Is this related to other Bluetooth suspend/resume regressions in 
2.6.27?

Alan Stern

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