[cups.general] Hardcode path to USB printer using libusb

[Thomas York]

I'm using cups 1.4.4 on an fully-up-to-date Debian Squeeze (6). This 
device is an embedded ARM device that has a single USB port. It's sole 
purpose is to be a print server with Zebra barcode printers (using the 
RAW driver in cups). I can print without issue by using the DeviceURI 
that the cups web management console detected for the USB Zebra printer. 
The problem is that this DeviceURI references both the exact model and 
serial number of the printer.

I did some digging and it appears that cups now uses libusb as its 
backend. I also read that I should be able to use 
usb:///dev/bus/usb/002/001 (which is the correct libusb path to anything 
plugged in to the USB port on this device) to reference the printer. 
I've tried to change the DeviceURI in cups to this path, but it simply 
doesn't work. I see nothing in the logs about errors printing to it. The 
job simply doesn't print.

Is there something simple I'm missing on getting this to work? Thanks.

--Thomas York

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