On Sun, Jul 20, 2003 at 04:06:32AM +0200, Luca Risolia wrote:
> Hello,
> I'd like to implement a "device_hint" module paramater in order to associate
> biunivocaly a /dev/videoX node with a specific camera. The problem is that
> _almost_ all the W996[87] devices have the same descriptors and no serial
> numbers.
> A possible solution would be to associate a node with the hub where the device
> is connected to, but I am not sure if this works, given that the same problem
> might happen with some hubs.
>
> Any other ideas?
udev:
http://www.linuxsymposium.org/2003/view_abstract.php?talk=94
A first cut of it is already on kernel.org, but it doesn't support what
you are looking for. I'll have something at my ols talk that will do
what you want, as long as the v4l device class patch makes it into the
kernel someday soon :)
If you don't want to use udev, you can roll your own solution with a
combination of sysfs and /sbin/hotplug, you don't need to do what you
want within the kernel.
Hope this helps,
greg k-h
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