> Called ".get_mctrl" function, other software can know incoming carrier > detection. > Or you mean a uart driver must detect incoming carrier with interrupt ? If a user opens a tty port which has no carrier signal then the open is supposed to block until the carrier is raised unless either clocal termios or O_NDELAY open flags are set. That usually means you need to take the carrier raise interrupt in order to wake out of open in this case. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
