[pvrusb2] sysfs, usdev and udevinfo

[xavier.gnata at free.fr]

Hi,

I'm a very happy pvrusb2 user :) but I have a question:

I would like to write an udev rule to set the user permission on /sys pvrusb2
related directory.

http://reactivated.net/writing_udev_rules.html tells me to type
udevinfo -a -p $(udevinfo -q path -n /dev/video3) to find some relevant info
about the device.
Unfortunately, I get only that:

  looking at device '/devices/virtual/video4linux/video3':
    KERNEL=="video3"
    SUBSYSTEM=="video4linux"
    DRIVER==""
    ATTR{dev}=="81:3"
    ATTR{name}==""

  looking at parent device '/devices/virtual/video4linux':
    KERNELS=="video4linux"
    SUBSYSTEMS==""
    DRIVERS==""

  looking at parent device '/devices/virtual':
    KERNELS=="virtual"
    SUBSYSTEMS==""
    DRIVERS==""

Nothing useful to tell udev that it is my TVcard and not another video4linux
device :(

If I do the same on video1 (integrated webcam), I get a lot of info:

  looking at device
'/devices/pci0000:00/0000:00:1d.7/usb7/7-6/7-6:1.0/video4linux/video0':
    KERNEL=="video0"
    SUBSYSTEM=="video4linux"
    DRIVER==""
    ATTR{dev}=="81:0"
    ATTR{name}=="Laptop Integrated Webcam"

ATTR{name}=="Laptop Integrated Webcam" is enough to write an udev rule.
ATTRS{vendor}=="0x8086" or ATTRS{device}=="0x2836" could also be used.

Why do we get nothing with pvrusb2 ?

/etc/udev/rules.d# modinfo pvrusb2

filename:      
/lib/modules/2.6.24-12-generic/kernel/drivers/media/video/pvrusb2/pvrusb2.ko
license:        GPL
description:    Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
author:         Mike Isely <isely at pobox.com>
srcversion:     E72D8CD6A2CD1A14A1C9C05

Cheers,
Xavier