I have recompiled the kernel with modifed settings:
In the debian/config/config I have changed:
After installing the modified kernel I was able to get my remote device
attached and it worked correctly.
Probably the problem could be also solved by increasing the MAXNPORT
from 128 to 240 or even to 256 in tools/usb/usbip/libsrc/vhci_driver.h
(modifying the kernel sources instead of the Debian configuration), but
I have not verified yet if that approach works.
Wojciech M Zabolotny, PhD
Institute of Electronic Systems
Faculty of Electronics and Information Technology
Warsaw University of Technology