GadgetFS newbie question

[Uchiyama, Toru]

Hello,

I want to use GadgetFS on an embedded system.
An example user mode driver is usb.c.
I want to develop a example driver base.
But, I was not able to find a description of  the license from the source code.
I want to know the license of usb.c
(http://www.linux-usb.org/gadget/usb.c)

Any advice would be greatly appreciated. Thanks!

--
uchiyama