Updated the test system to Kernel 4.3-rc1..

$ uname -a
Linux rg6830l 4.3.0-rc1 #1 SMP Sat Sep 12 19:15:35 PDT 2015 x86_64 x86_64 x86_64 GNU/Linux

Brief details of changes are here:  http://lkml.iu.edu/hypermail/linux/kernel/1509.1/03200.html

The NVIDIA gpl_only issue has been fixed in linux/kernel/workqueue.c, but the compile now fails even before that is reached:

/home/rgadsdon/NVIDIA-Linux-x86_64-355.11/kernel/nvidia/nv-procfs.c: In function ‘nv_procfs_read_registry’:
/home/rgadsdon/NVIDIA-Linux-x86_64-355.11/kernel/nvidia/nv-procfs.c:363:12: error: void value not ignored as it ought to be
 return seq_printf(s, "Binary: \"%s\"\n", registry_keys);
 ^
/home/rgadsdon/NVIDIA-Linux-x86_64-355.11/kernel/nvidia/nv-procfs.c: In function ‘nv_procfs_read_text_file’:
/home/rgadsdon/NVIDIA-Linux-x86_64-355.11/kernel/nvidia/nv-procfs.c:563:12: error: void value not ignored as it ought to be
 return seq_puts(s, s->private);
 ^

VMware 12 vmmon compile fails, with a similar error:

/tmp/modconfig-y2Cuiv/vmmon-only/linux/driver.c: In function ‘cleanup_module’:
/tmp/modconfig-y2Cuiv/vmmon-only/linux/driver.c:390:8: error: void value not ignored as it ought to be
 if (misc_deregister(&linuxState.misc)) {
 ^
.................
Unable to install all modules. See log for details.

Robert Gadsdon.   September 12, 2015.