On Fri, Sep 10, 2010 at 17:14, Ludovic Rousseau
<ludovic.rousseau@xxxxxxxxx> wrote:
> 2010/9/9 Kay Sievers <kay.sievers@xxxxxxxx>:
>> Udev parses the usb descriptors and makes them available in a
>> property. That's the only way to access usb_interface properties from
>> the usb_device event.
>>
>> Something like:
>> SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}="*:0b0000:*", GROUP= ...
>> should do it.
>
> It works but is not what I need.
> - Why do you use = instead of == for ENV{ID_USB_INTERFACES}? I want to
> check the value of ID_USB_INTERFACES, not set it.
> - Why use "*" in "*:0b0000:*"?
>
> Instead I used a ==
> SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}=="*:0b0000:*", GROUP="pcscd"
> or
> SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}==":0b0000:", GROUP="pcscd"
> But it does not work :-(
Sure, it should be ==. Make sure that your rule file sorts after
50-udev-default-rules, which calls usb_id, and sets this property.
Kay
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