Problem with udev & Vodafone UMTS card

[Marc Packenius <marc-dated-1107785560.cbb185-dated-1107785750.770de9@zappa.freen]

Hi there,

after installing udev on a Debian/sid-powered Toshiba Satellite
notebook, the Vodafone UMTS card stopped working.

This pc-card includes a USB controller and feeds three serial character
devices when installed properly. They're called "/dev/ttyUSB[0-2]".

When using udev, those device nodes are not created properly, instead
the dev directory shows files with the filename "/dev/<NULL>[0-2]", e.g. 
"/dev/<NULL>0".

Here's what I do to reproduce the problem:

mudshark:~# modprobe -v usbserial vendor=0xaf0 product=0x5000
insmod /lib/modules/2.6.10-mudshark/kernel/drivers/usb/serial/usbserial.ko vendor=0xaf0 product=0x5000

Log messages:

=> /var/log/messages <=
Jan 24 14:59:35 mudshark kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
Jan 24 14:59:35 mudshark kernel: usbserial_generic 5-1:1.0: Generic converter detected
Jan 24 14:59:35 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB0
Jan 24 14:59:35 mudshark kernel: usbserial_generic 5-1:1.1: Generic converter detected
Jan 24 14:59:35 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB1
Jan 24 14:59:35 mudshark kernel: usbserial_generic 5-1:1.2: Generic converter detected
Jan 24 14:59:35 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB2
Jan 24 14:59:35 mudshark kernel: usbcore: registered new driver usbserial_generic
Jan 24 14:59:35 mudshark kernel: usbcore: registered new driver usbserial
Jan 24 14:59:35 mudshark kernel: drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0

=> /var/log/daemon.log <=
Jan 24 14:59:35 mudshark udev[3157]: creating device node '/dev/<NULL>0'
Jan 24 14:59:35 mudshark udev[3169]: creating device node '/dev/<NULL>1'
Jan 24 14:59:35 mudshark udev[3179]: creating device node '/dev/<NULL>2'

=> /var/log/kern.log <=
Jan 24 14:59:35 mudshark kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
Jan 24 14:59:35 mudshark kernel: usbserial_generic 5-1:1.0: Generic converter detected
Jan 24 14:59:35 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB0
Jan 24 14:59:35 mudshark kernel: usbserial_generic 5-1:1.1: Generic converter detected
Jan 24 14:59:35 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB1
Jan 24 14:59:35 mudshark kernel: usbserial_generic 5-1:1.2: Generic converter detected
Jan 24 14:59:35 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB2
Jan 24 14:59:35 mudshark kernel: usbcore: registered new driver usbserial_generic
Jan 24 14:59:35 mudshark kernel: usbcore: registered new driver usbserial
Jan 24 14:59:35 mudshark kernel: drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0

sysfs looks like this:

mudshark:~# ls -l /sys/bus/usb-serial/devices/
insgesamt 0
lrwxrwxrwx  1 root root 0 2005-01-24 14:59 ttyUSB0 -> ../../../devices/pci0000:00/0000:00:1e.0/0000:01:0b.0/0000:02:00.0/usb5/5-1/5-1:1.0/ttyUSB0
lrwxrwxrwx  1 root root 0 2005-01-24 14:59 ttyUSB1 -> ../../../devices/pci0000:00/0000:00:1e.0/0000:01:0b.0/0000:02:00.0/usb5/5-1/5-1:1.1/ttyUSB1
lrwxrwxrwx  1 root root 0 2005-01-24 14:59 ttyUSB2 -> ../../../devices/pci0000:00/0000:00:1e.0/0000:01:0b.0/0000:02:00.0/usb5/5-1/5-1:1.2/ttyUSB2

The entries in /dev look like this:

mudshark:~# ls -l /dev/*NULL*
crw-rw----  1 root root 0, 0 2005-01-24 14:59 /dev/<NULL>0
crw-rw----  1 root root 0, 1 2005-01-24 14:59 /dev/<NULL>1
crw-rw----  1 root root 0, 2 2005-01-24 14:59 /dev/<NULL>2

udev-version:

mudshark:~# dpkg -l udev
[...]
ii  udev                          0.050-5                       /dev/ management daemon

I reproduced the problem with several (debian-patched) kernels, incl. 
2.6.{8,9,10}.

Without udev, ie. with manually created device nodes, the card works
fine.

If there's further information I can provide, or if I should report this
to someone else, please let me know. Thanks!

Thanks for your advice,
-- 
Marc "Backlog" Packenius


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