Bug 642206

Summary:	/proc/bus/usb/devices formatting error
Product:	Red Hat Enterprise Linux 6	Reporter:	Ian G. Gosling <ian.gosling>
Component:	kernel	Assignee:	Don Zickus <dzickus>
Status:	CLOSED ERRATA	QA Contact:	Qian Cai <qcai>
Severity:	medium	Docs Contact:
Priority:	low
Version:	6.0	CC:	arozansk, qcai
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel-2.6.32-94.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-05-23 20:23:58 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ian G. Gosling 2010-10-12 10:42:22 UTC

Description of problem:
On a system with a USB 3.0 hub, there is a formatting error Spd=?? in the T: line for the hub in /proc/bus/usb/devices.

Version-Release number of selected component (if applicable):
2.6.32-44.2

How reproducible:
hard

Steps to Reproduce:
1. Enable the USB 3.0 hub, start the system
2. Check that the xHCI driver module is loaded
3. Inspect the output of /proc/bus/usb/devices
  
Actual results:
T:  Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=??  MxCh= 4
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev= 2.06
S:  Manufacturer=Linux 2.6.32-44.2.el6.x86_64 xhci_hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=0000:45:00.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=12ms


Expected results:
Spd= should have digits following.

Additional info:
On a system with VMware Workstation or VMware Player installed, this bug causes the VMware USB Arbitrator process to fail to start successfully.

Comment 2 Don Zickus 2010-10-13 15:21:54 UTC

Hopefully, this will automatically get resolved when I backport the latest USB3 fixes from upstream in a couple of months (assuming it is fixed upstream).

Cheers,
Don

Comment 3 Don Zickus 2010-12-10 22:39:22 UTC

Found commit 834e2312e7a384877a876b0d34dffc3046c96bcb upstream that resolves this.  Will include this for 6.1.

Cheers,
Don

Comment 4 RHEL Program Management 2010-12-10 22:40:01 UTC

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

Comment 6 Aristeu Rozanski 2011-01-07 12:41:46 UTC

Patch(es) available on kernel-2.6.32-94.el6

Comment 10 errata-xmlrpc 2011-05-23 20:23:58 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0542.html