Developing a Linux driver using a USB sniffer

[Greg KH]

On Mon, May 05, 2014 at 02:06:30PM +0200, Luca Ellero wrote:
> Hi all,
> can someone please tell me if it is legal to develop an USB driver 
> analysing the USB protocol with a USB sniffer?
> Can this driver be made public under GPL?

Would you ask a doctor for legal advice?  If not, why ask a programmer?
If you have legal questions, ask a lawyer in your country, they are the
only ones that can give you a definitive answer.

good luck,

greg k-h