Comment 9 for bug 356317

OK sounds good. I haven't seen the code, just double-checking. It was my understanding the that 5,x models do have a hardware button (it is just under the actual touchpad). So I did not know you could test for the existence of a hardware button that way. In any regard, since this driver affects not only 5,x models we should be sure that it is tested on a MBP4,1 othewise we could get into a pass-back-and-forth situation alternately fixing bugs for the 4,1 and 5,x machines.