iokit/Kernel/IOInterruptController.cpp

94   wasAlreadyRegisterd = vector->interruptRegistered;
186       vector->interruptRegistered   = 1;
212   vector->interruptRegistered   = 1;
234   if (!vector->interruptRegistered) {
249   vector->interruptRegistered = 0;
505       if (!vector->interruptRegistered) break;
538   vector->interruptRegistered   = 1;
563     if (!vector->interruptRegistered
576     vector->interruptRegistered = 0;
696 	  if (vector->interruptRegistered) {