Re: Problem with udev & Vodafone UMTS card

[Marc Packenius <marc@freenet-rz.de>]

Hi Greg,

Greg KH <greg@kroah.com> writes:
> On Mon, Jan 24, 2005 at 05:17:53PM +0100, Kay Sievers wrote:
>> On Mon, 2005-01-24 at 16:58 +0100, Marc Packenius wrote:
>> > Hi Kay,
>> > 
>> > Kay Sievers <kay.sievers@vrfy.org> writes:
>> > 
>> > > On Mon, 2005-01-24 at 15:15 +0100, Marc Packenius wrote:
>> > >> 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".
>> > 
>> > >> => /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'
>> > 
>> > > How does:
>> > >   ls -l /sys/class/tty/ttyUSB*
>> > 
>> > > look like, or any other suspicious entry in this directory?
>> > 
>> > mudshark:~# ls -l /sys/class/tty/ttyUSB*
>> > ls: /sys/class/tty/ttyUSB*: Datei oder Verzeichnis nicht gefunden
>> > mudshark:~# ls -l /sys/class/tty/*NULL*
>> 
>> That's a kernel bug and not a udev issue. You may try to work around
>> this by placing:
>> KERNEL="<NULL>*", NAME="ttyUSB%n"
>> 
>> in a /etc/udev/rules.d/ file.
>> 
>> Greg, any idea what is causing this in the serial driver?

> No I do not.  What kernel version is this?  What driver is this (the
> usb-serial generic driver, or some other usb-serial driver?)

That's with kernels that I built locally on a Debian/sid system. I can
reproduce the behaviour with Debian-patched 2.6.8 to 2.6.10 and vanilla
2.6.10.

The driver is usb-serial generic. Inserting the card and loading the
driver using

  modprobe -v usbserial vendor=0xaf0 product=0x5000

looks like this (with udev not installed):

Feb  1 23:49:03 mudshark kernel: PCI: Enabling device 0000:02:00.0 (0000 -> 0002)
Feb  1 23:49:03 mudshark pci.agent[3255]:      ohci-hcd: already loaded
Feb  1 23:49:03 mudshark kernel: ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 11 (level, low) -> IRQ 11
Feb  1 23:49:03 mudshark kernel: ohci_hcd 0000:02:00.0: OPTi Inc. 82C861 (#2)
Feb  1 23:49:03 mudshark kernel: ohci_hcd 0000:02:00.0: irq 11, pci mem 0x1f800000
Feb  1 23:49:03 mudshark kernel: ohci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 5
Feb  1 23:49:03 mudshark kernel: ohci_hcd 0000:02:00.0: WARNING: OPTi workarounds unavailable
Feb  1 23:49:03 mudshark kernel: hub 5-0:1.0: USB hub found
Feb  1 23:49:03 mudshark kernel: hub 5-0:1.0: 2 ports detected
Feb  1 23:49:08 mudshark kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic
Feb  1 23:49:08 mudshark kernel: usbcore: registered new driver usbserial_generic
Feb  1 23:49:08 mudshark kernel: usbcore: registered new driver usbserial
Feb  1 23:49:08 mudshark kernel: drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0
Feb  1 23:49:14 mudshark kernel: usb 5-1: new full speed USB device using ohci_hcd and address 2
Feb  1 23:49:14 mudshark kernel: usbserial_generic 5-1:1.0: Generic converter detected
Feb  1 23:49:14 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB0
Feb  1 23:49:14 mudshark kernel: usbserial_generic 5-1:1.1: Generic converter detected
Feb  1 23:49:14 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB1
Feb  1 23:49:14 mudshark kernel: usbserial_generic 5-1:1.2: Generic converter detected
Feb  1 23:49:14 mudshark kernel: usb 5-1: Generic converter now attached to ttyUSB2

If I can provide more information, please let me know.

Regards,
-- 
Marc "Backlog" Packenius


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