iokit/Kernel/IOService.cpp

1422     IOCommand *notifyList =
1425     if( notifyList) {
1429 	iterqueue(&notifyList->fCommandChain, entry) {
1533 	    IOCommand *notifyList = (IOCommand *) getProperty( typeOfInterest );
1534 	    if (!notifyList || !OSDynamicCast(IOCommand, notifyList)) {
1535 		notifyList = OSTypeAlloc(IOCommand);
1536 		if (notifyList) {
1537 		    notifyList->init();
1538 		    setProperty( typeOfInterest, notifyList);
1539 		    notifyList->release();
1543 	    if (notifyList) {
1544 		enqueue(&notifyList->fCommandChain, &notify->chain);