Bug 10655 - Plugging in USB scanner sometimes resets USB HDD
Summary: Plugging in USB scanner sometimes resets USB HDD
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: USB (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Greg Kroah-Hartman
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-05-08 22:18 UTC by Peter Klotz
Modified: 2009-07-28 16:49 UTC (History)
0 users

See Also:
Kernel Version: 2.6.25.1
Subsystem:
Regression: No
Bisected commit-id:

Attachments
/var/log/messages output of a typical case (40.38 KB, text/plain)
2008-05-08 22:19 UTC, Peter Klotz 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Peter Klotz 2008-05-08 22:18:57 UTC 
Latest working kernel version: ?
Earliest failing kernel version: ?
Distribution: Ubuntu 8.04
Hardware Environment: Acer TravelMate 662
Software Environment: Gnome
Problem Description: Sometimes when I plug a USB scanner into my laptop it resets an already attached (and used) USB harddisk.

Steps to reproduce:
* Start USB HDD (self powered)
* Start a "badblocks -v <DEVICE>" on this harddisk
* Plug in and out USB scanner (host powered) several times
* Occasionally a USB reset occurs on the HDD. The HDD changes its device and badblocks returns errors from this point on.
Comment 1 Peter Klotz 2008-05-08 22:19:40 UTC 
Created attachment 16077 [details]
/var/log/messages output of a typical case
Comment 2 Greg Kroah-Hartman 2009-07-28 16:49:50 UTC 
Should be fixed in 2.6.30.  If not, please let the developers at linux-usb@vger.kernel.org know about it.
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