[cups.general] http://cups.org/str.php?L2535

[Tim Waugh]

This bug:
  http://cups.org/str.php?L2535
is marked as closed but I would like to submit a patch.

This comment is incorrect:
  "The ioctl() is supposed to work in current kernels"

There is no support in the lp driver for fetching the device ID, and has
not been for a while.

This comment is puzzling:
  "better to have the OS do its job"

It *was* and *is* doing its job, but CUPS no longer fetches the Device
ID from the correct place (/sys).

I'm not quite clear on the reason for the working code being removed,
but here is a patch to make it work again in a different way (in case
the '/sys' bit is the objection?).

Tim.
*/

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