Dear all: I am looking the source code of ehci-irq, but I cannot see any information which it will pass to "port_connect_change" when it receive PCD interrupt. if someone is familiar with this part of flow, please let me know. appreciate your help, vichy -- 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