Hi, Hinko Kocevar <hinkocevar@xxxxxxxxx> writes: >> The way dummy was written, it can only instantiate one gadget. You >> either need a real USB peripheral controller, or you need to patch dummy >> to instantiate more than one gadget. >> >> -- >> balbi > > By dummy - are you referring to g_zero of dummy_hcd? Okay, we need a little more explanation. In order to have a gadget driver like g_zero loaded, you need a USB peripheral controller (in your case, that's handled by dummy). Now, when you want that g_zero to be useful, you need to plug it to a USB host controller (in your case, that's also handled by dummy). What I'm saying, though, is that this dummy (dummy_hcd.c) can only handle ONE gadget (a fake USB peripheral controller) at a time. It does NOT instantiate more than one of those. Because of that, there's no way to get g_zero to probe for a second time. In fact, even if you were to patch dummy_hcd.c to instantiate N gadgets, you wouldn't be able to use g_zero.ko, and would be required to rely on our configfs interface for dynamically generating and binding different gadget drivers to each of your gadget instances, but that's another story altogether. -- balbi
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