[Pkg-cups-devel] Bug#636303: usbfs: process ... (usb) did not claim interface 1 before use

[Matthias Dellweg]

I have the same Problem with a Prolific PL2305 adapter cable. It turns
out to be a kernel problem due to a poor design in the printer class
spec. I sent a Patch to lkml [1]. It fixes the discovery problem of
cups.
Maybe you want to reassign the bug to the kernel package.
  Matthias Dellweg

[1] http://lkml.org/lkml/2011/9/25/57