linux-kernel - Re: 2.6.27-rc2 USB suspend regression

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Message-ID: <48AC8FB2.2040301@goop.org>
Date:	Wed, 20 Aug 2008 14:42:10 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.27-rc2 USB suspend regression

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).

    J
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