The File Backed USB Storage Gadget seems to be fully working with my SuperH UDC driver when attached to a host running a 2.6.0-test5 Linux kernel.

But when I attach the gadget to a 2.4.20 Linux host the usb-storage driver on the host hangs during initialisation. Things appear to go wrong as soon as the host sends some commands on endpoint 1. I don't expect this is a difficult problem to track down but I haven't had time to investigate it thoroughly yet, but someone may already know the answer as it could be a problem with the File Backed USB Storage Gadget rather than the UDC.

When attaching to a Windows 2000 host problems are more fundamental. Windows doesn't enumerate the device properly. It just does a sequence of Bus Reset then request of the Device Descriptor three times. The UDC/Gadget seem to be responding with a correct 18 byte descriptor (at least Linux likes it!) but Windows ignores it.

Thanks

Julian Back



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