Synaptics Forcepad Support Kernel 4.1-rc6

I am trying to add Forcepad support for a touchpad which isn't yet 
supported.

The kernel is now using pnp ids and so for the device I am using kernel 
reports this:

$ cat /sys/bus/pnp/drivers/i8042\ aux/00\:04/id
SYN3018
SYN0100
SYN0002
PNP0f13


I have tried modifying drivers/input/mouse/synaptics.c line 213:

/* This list has been kindly provided by Synaptics. */
static const char * const forcepad_pnp_ids[] = {
	"SYN300D",
	"SYN3014",
+	"SYN3018",
	NULL
};

Unfortunately it hasn't worked. Touchpad is still being detected as 
vanilla PS/2 Generic Mouse.

Which other modifications are needed?


--