Bug 10962

Summary: 2.6.26-rc2 WARNING from usb-serial, and then my gps is dead
Product: Drivers Reporter: Rafael J. Wysocki (rjw)
Component: USBAssignee: Greg Kroah-Hartman (greg)
Status: CLOSED WILL_NOT_FIX    
Severity: normal    
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.26-rc2 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 10492    

Description Rafael J. Wysocki 2008-06-22 11:31:24 UTC 
Subject    : 2.6.26-rc2 WARNING from usb-serial, and then my gps is dead
Submitter  : Helge Hafting <helge.hafting@aitel.hist.no>
Date       : 2008-06-22 18:22
References : http://marc.info/?l=linux-kernel&m=121415899320685&w=4

This entry is being used for tracking a regression from 2.6.25.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Rafael J. Wysocki 2008-06-22 12:02:19 UTC 
Handled-By : Greg Kroah-Hartman <greg@kroah.com>
Comment 2 Rafael J. Wysocki 2008-06-25 15:14:45 UTC 
On Wednesday, 25 of June 2008, Helge Hafting wrote:
> Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.25.  Please verify if it still should be listed.
> > 
> > 
> > Bug-Entry   : http://bugzilla.kernel.org/show_bug.cgi?id=10962
> > Subject             : 2.6.26-rc2 WARNING from usb-serial, and then my gps
> is dead
> > Submitter   : Helge Hafting <helge.hafting@aitel.hist.no>
> > Date                : 2008-06-22 18:22 (1 days old)
> > References  : http://marc.info/?l=linux-kernel&m=121415899320685&w=4
> > 
> > 
> 
> I can confirm that this problem still happens in 2.6.26-rc8.
> When the gps loose connection (probably due to faulty USB cabling), then
> the kernel spits out numerous WARNINGs.
> 
> I'll try to reproduce with USB debugging later.
Comment 3 Helge Hafting 2008-07-02 03:52:32 UTC 
I did reproduce the bug with USB debugging, and the log is at:
http://www.aitel.hist.no/~helgehaf/usbtrouble1.log.bz2
(Kernel 2.6.26-rc8, SMP, amd64, voluntary preempt)
Comment 4 Greg Kroah-Hartman 2008-07-02 14:20:40 UTC 
Thanks for the log file, you can safely ignore this warning at this time, the tty layer rework is fixing this type of issue for 2.6.27.