Red Hat Bugzilla – Bug 145801
modem_run hangs in latest errata kernels due to usb changes
Last modified: 2007-11-30 17:07:06 EST
Description of problem:
The kernel seems to include usb changes that causes issues with some
programs, specifically the modem_run program used for uploading
firmware to the Thompson/Alcatel Speedtouch USB modems. The issue is
discussed in detail at
I have tried applying the patch mentioned in that thread to the Errata
3 kernels, and modem_run works fine after applying the patch. Would
you be introducing the fix mentioned in that thread to an upcoming
kernel errata release, or would we be forced to manualyl patch it
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Try to install speedtouchconf from speedtouchconf.sf.net by running
"speedtouchconf.sh". It hangs midway through, with the modem light
staying at amber after couple of green blinks.
2. The process listing shows that modem_run is the program that is
3. Can be reproduced at will by running "modem_run" by hand.
1. modem_run hangs.
modem_run completes execution and ADSL synchronization is obtained by
Created attachment 110479 [details]
This is based on Sergey's approach, plus ENOTTY check is done
outside of the lock.
Please test kernel 2.4.21-31.EL.usbserial.3 by selecting a suitable
architecture from the following URL:
This bug is filed against RHEL 3, which is in maintenance phase.
During the maintenance phase, only security errata and select mission
critical bug fixes will be released for enterprise products. Since
this bug does not meet that criteria, it is now being closed.
For more information of the RHEL errata support policy, please visit:
If you feel this bug is indeed mission critical, please contact your
support representative. You may be asked to provide detailed
information on how this bug is affecting you.