Comment 12 for bug 519707

The permission denied messages are still logged with start of any printjob apparently.

I have /etc/udev/rules.d/70-printers.rules:
# Low-level USB device add trigger
ACTION=="add", SUBSYSTEM=="usb", ATTR{bInterfaceClass}=="07", ATTR{bInterfaceSubClass}=="01", RUN+="udev-configure-printer add %p"
# usblp device add trigger (needed when usblp is already loaded)
ACTION=="add", KERNEL=="lp*", RUN+="udev-configure-printer add %p"

# Low-level USB device remove trigger
ACTION=="remove", SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}=="*:0701*:*", RUN+="udev-configure-printer remove %p"

udev-configure-printer is a binary so not sure what it does (didn't do source code inspection).

Issue didn't happen since I rmmod usblp before every printjob.