Detach USB Device Driver and Attach it to ugen driver at runtime

[Daniel Grech]

Hi, I'm using libusb to gain access to raw USB Data from userspace. My
problem is that this library only works with devices which are treated as
generic devices ("handled by the ugen driver"). I need a mechanism that will
allow me to detach any device specific drivers that are attached to a device
and attach the ugen driver instead. I want to do this without re-compiling
the FreeBSD Kernel. Thanks in advance for your help.