Anca: I'm unclear as to the precise nature of your problem. Is the touchpad completely broken, or is it just vertical scrolling that's broken?
In either case it appears that your touchpad is behaving outside of the specification for Synaptics touchpads, as the patch shouldn't have any impact on devices behaving within the specification. Once you've clarified exactly how your touchpad is malfunctioning I'll add some debug code to the driver to help us diagnose what's going wrong.
Anca: I'm unclear as to the precise nature of your problem. Is the touchpad completely broken, or is it just vertical scrolling that's broken?
In either case it appears that your touchpad is behaving outside of the specification for Synaptics touchpads, as the patch shouldn't have any impact on devices behaving within the specification. Once you've clarified exactly how your touchpad is malfunctioning I'll add some debug code to the driver to help us diagnose what's going wrong.