A simple patch for the GPL-only issue with NVIDIA drivers was submitted on August 4, 2015, but has still not been included with 4.2-rc7..     http://lkml.iu.edu/hypermail/linux/kernel/1508.0/02260.html

The patch has been put forward for 4.3, but there has been a request for it to be included with the upcoming 4.2 release.. http://lkml.iu.edu/hypermail/linux/kernel/1508.0/02703.html

Robert Gadsdon.   August 16, 2015.