--- xnu/xnu-12377.101.15/iokit/Kernel/IOInterruptEventSource.cpp
+++ xnu/xnu-8020.121.3/iokit/Kernel/IOInterruptEventSource.cpp
@@ -84,10 +84,6 @@
 {
 	bool res = true;
 
-	if (inIntIndex < 0) {
-		return false;
-	}
-
 	if (!super::init(inOwner, (IOEventSourceAction) inAction)) {
 		return false;
 	}