PCSX2/pcsx2 — pull request #149 by Kingcom (2014-07-16 09:21:43+00:00)
Title: Allow hotplugging XInput devices in LilyPad

It's pretty standard to allow XInput devices to be turned on and off at any time. More or less all games natively supporting it allow that, so it just feels natural to provide a similar experience.
I guess this creates a tiny bit of overhead? It shouldn't be significant though.