Valve Snuck The Lenovo Legion Go S Controller Support Into The Linux Kernel

Valve is supporting Lenovo with the Legion Go S gaming handheld running their Arch Linux based SteamOS. Beyond the fanfare at CES, Valve has been collaborating with Lenovo on engineering resources for ensuring the Legion Go S is running well with SteamOS and in turn the mainline Linux kernel. It turns out from a recent sneaky patch, Valve quietly added support to the Linux kernel for what ended up being the Lenovo Legion Go S controller/input handling...