Hi! Where could I read about it? and where is the code? I've found something looks like a pooling loop - drivers/usb/core/hub.c in the "hub_events" function is this it? -- with best regards Dmitry Bolshakov -- 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