Hello I've got a Novation midi-over-usb device (LaunchControl XL) that works correctly on boot, but remains in power-off mode when waking from sleep. I suspect that there is some sort of initialisation that needs to be applied. Could anyone suggest possible causes, or point me in the direction of the relevant source code. I found `sound/usb/quirks.c`, which seems to be the place to handle this kind of thing, but there is no mention of my device anywhere in the source tree at present (1235:0061). Thanks in advance for your help Richard
