Comment 47 for bug 527912

As long as the change has not become part of the official linux-backports-modules package you actually may loose support when there is a newer kernel with a higher abi number. I am right now trying to get this done. Then you would need to install linux-backports-modules-input-generic-pae (which is a meta package pointing to the right package) and this will update the input drivers on future updates.