[Nut-upsuser] riello_usb driver: randomly not working and usbfs flooding syslog

[Roberto Resoli]

Hello,

after some days running without problems, my riello idialog 800 ups
get disconnected, and usbfs started flooding syslog with messages like:

usb 1-1.2: usbfs: process 57342 (riello_usb) did not claim interface 0 
before use

Version is 2.7.1-1 debian packages, which I backported from sid to wheezy.

Any hint?
rob