Hi, Resolved this by fixing a bug in device side transmit routine. Anyways thank you guys. This was the only post I found on net with exactly my problem. Regards, Dipen Patel -- 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