On Wed, 2005-02-16 at 13:46 +0100, Oliver Neukum wrote: > > > > That is all the debug output. I double checked. > > There should be more? > > > > The problem I am facing is very similar to Gordon Schumacher's: > > http://article.gmane.org/gmane.linux.usb.devel/30193/ > > How so? IIRC Gordon's modem had faulty descriptors. Your modem seems > alright from what I could see of your debugging info. > > Regards > Oliver
Some more information. kernel 2.6.6: Modem works. kernel 2.6.7: Modem works. kernel 2.6.8.1: No device present (/dev/ttyACM0). Only logged message is: drivers/usb/class/cdc-acm.c: v0.23:USB Abstract Control Model driver for USB modems and ISDN adapters kernel 2.6.9: Same as 2.6.8.1. kernel 2.6.10: Device present, but modem doesn't respond. In minicom, no 'OK' is displayed. Typing 'AT', no characters are echoed, and modem doesn't respond with 'OK'. kernel 2.6.11-rc4: Same as 2.6.10. Looking at the differences between 2.6.7 and 2.6.8.1, there were some changes to acm_probe. It seems the changes cause problems for my modem. I copied cdc-acm.c from kernel 2.6.7 to 2.6.11-rc4, and the modems works again. I had to make one small change to acm_tty_write as 'int from_user' parameter isn't valid in 2.6.11-rc4. Happy to provide any further information. Tips on how I can code up a solution welcome. -- Craig Keogh <[EMAIL PROTECTED]> ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
