I noticed in DryOS r54 and later, Rec2PB (used in dryos switch_mode_usb) takes an argument. From the code, the argument should be a levent ID, or -1. For disassembly, our existing switch_mode_usb code would generally end up passing 0, since the mode argument is in r0.
Firmware that expect the argument could be identified by the string "AC:Rec2PB x Repost", but rather than adding stuff to the sig finders and a new define, in trunk 5798 I just made it pass -1 all the time.
PB2Rec still does not take arguments on these cams.
