[Libusb-devel] Usbdevfs permissions problem with libusb under Linux RH 7.2

[Guido M. <gma...@ti...>]

I have compiled an application based upon the libusb library and it 
works fine if LOGIN as root.  
But if I login as a User I get the error message:
 
 Couldn't Retrieve Descriptors
 
I tried to assign the read/write/execute attributes on the applications 
files but I couldn't sove the problem.
 
Can you give me an idea on how to make it run?
Probably I have a usbdevfs permissions problem.

OS: Linux RedHat 7.2 

Guido Madonini