Backporting uvcvideo to an older kernel

Hi, I have a little ARM board (radxa rock) which unfortunately only has support in a modified 3.0.36 kernel. Maybe the Chinese manufacturer will honour the GPL at some point and release source code, but for the moment it's all we've got :/ Unfortunately, I have some USB webcams that aren't support in that old a kernel; I know they're supported by 3.4, possibly even earlier. Has anyone tried backporting the uvcvideo and supporting video4linux modules? Just wondering if it's likely to go well or if I'll be wasting my time. Cheers, Toby