kernel 2.4.19
USB sub-system compiled as modules
Canon CanoScan N670U scanner
Intel UHCI USB controller (not the JE UHCI)
sane 1.0.8 backend
modified scanner.h to add the vendor and product ID for the N670U


The kernel recognizes the USB controller and /proc/bus/usb/devices lists
the scanner with the correct vendor and product IDs. When I execute
"scanimage -v -d plustek:/dev/usb/scanner0" I get the message:

scanner.c: open_scanner(0): Scanner device is already open

>From my cursory glance at the source for scanner.c, the flag
scn->isopen is only set at the end of open_scanner(), which is the same
routine that is producing the above message.

What conditions can cause open_scanner() to be called twice and what
should I be looking for?

-- 
Bill Mania


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