parport_wait_event(9)
NAME
parport_wait_event - wait for an event on a parallel port
SYNOPSIS
int parport_wait_event(struct parport * port, signed long timeout);
ARGUMENTS
- port
- port to wait on
- timeout
- time to wait (in jiffies)
DESCRIPTION
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.