On Thursday 28 May 2015 18:37:49 you wrote:

This is wrong, the bits of param[0] which define the hw version of
the touchpads are in the low nibble, so your check will also match
older touchpads where we do not want to skip the rare check.

Oh, sorry about that. Should have paid more attention.
First time poking the kernel after all :)

I've attached my patch, which actually checks the low nibble of
param[0]. It has already been tested on an Asus PU551LA laptop,
so it should work for your laptop too.

Yes, this works. Thanks!