How to send ioctl command to my Linux USB driver?

Dear Sir:

In my USB driver, I use "usb_register" and "usb_register_dev"
to register usb_driver and usb_class_driver to usb core. I
also create some attribute files for my driver

When the device plugging in, its init and probe functions had
no error and work well

I found the attribute files under /sys/bus/usb/devices/1-1:1.0
, the name of usb_driver under /sys/bus/usb/drivers, the name
of usb_class_driver under /sys/class/usb. But I can't see the
anything under /dev

I tried to open the name of full-path of of usb_class_driver to
send ioctl commands, but it shows message:"can't open"

How to open device node for sending ioctl commands? After
using "usb_register" and "usb_register_dev", where do
system create device node?

Please give me some information

Thank you!

ps: I use kernel version is 3.0.8 and platform is Galaxy Nexus

BR,
Alan

On 3.4.12 11:45 , bluestar wrote:

If your system is using the udev daemon for creating the /dev entries,
you are very probably missing the udev scripts for your device.

The location of the scripts may vary according to the Linux
distribution. In Ubuntu 10.04 they are in /etc/udev/rules.d.

Here is an example for the Amontec JTAG key on USB:

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#  Rules to enable USB read/write to Amontec JTAGkey

ACTION!="add", GOTO="amontec_rules_end"
SUBSYSTEM!=="usb_device", GOTO="amontec_rules_end"

ATTR{idProduct}=="cff8", ATTR{idVendor}=="0403", MODE="0666"

LABEL="amontec_rules_end"

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HTH (hope this helps)


Tauno Voipio