Re: /dev/video: Operation not permitted

[Erik van der Meulen <e.van.der.meulen@avondel.nl>]

Some people responded to my question asking for more information
concerning this error. 
I'll give it a try.

I have purchased a Philips Vespa Pro Webcam, because it was reccomended
for support by the Linux community. Indeed, it has some very detailed
information on:

  http://www.smcc.demon.nl/webcam/

I run Debian 2.2 on a Dell notebook with kernel 2.2.17 so I had to do a
bit of work in order to get usb working. I choose the backport patch
over the upgrade to 2.4.0-test-something. Followed instructions on:

  http://www.suse.cz/development/usb-backport/

This all seems to work pretty well, judging from /var/log/messages (i'll
list portion of the log below.
(Acctually quite nice that a non-programmer like me can find instructions
to do things like patching kernels and building modules.)
But now we come to the tragic bit: I have built a new module pwc.o for
my 2.2.17 kernel (pre-built only exists for 2.2.16 or 2.4.0-test6)
according to the instructions. Now I load and it gives me:

  Oct  3 16:11:37 eme_lap kernel: pwc Philips PCA645/646 +
  PCVC675/680/690 webcam module version 5.05 PPro (UP) loaded.
  Oct  3 16:11:37 eme_lap kernel: pwc Also supports Askey VC010 cam.
  Oct  3 16:11:37 eme_lap kernel: usb.c: registered new driver Philips webcam
  Oct  3 16:11:37 eme_lap kernel: pwc Philips PCVC680K USB webcam detected.
  Oct  3 16:11:37 eme_lap kernel: pwc Registered as /dev/video0.

Which looks allright to me.
Any attempts to access /dev/video or /dev/video0 result in:

  /dev/video: Operation not permitted

Leaves me pretty clue less...
Anny suggestions much appreciated.

--
  Erik van der Meulen <e.van.der.meulen@avondel.nl>