On Wed, 5 Jun 2013, victor yeo wrote: > Thanks a lot. i understand this part now. Do you notice the Set > Address request is not seen by the gadget driver? The Set Address > request is handled by the hardware. Could it be the root cause? As > gadget driver may expect the address information from the host, and > for now UDC driver just ignore the Set Address request ? That may very well be related to the problem. Gadget drivers expect UDC drivers or UDC hardware to handle Set-Address requests automatically. If your UDC or driver doesn't handle them, it could cause a test to fail. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html