parport_wait_event — wait for an event on a parallel port
|struct parport * port,|
|signed long timeout|
This function waits for up to
timeout jiffies for an
interrupt to occur on a parallel port. If the port timeout is
set to zero, it returns immediately.
If an interrupt occurs before the timeout period elapses, this function returns zero immediately. If it times out, it returns one. An error code less than zero indicates an error (most likely a pending signal), and the calling code should finish what it's doing as soon as it can.