--- xnu/xnu-792.10.96/iokit/Kernel/IOPMPowerStateQueue.cpp
+++ xnu/xnu-517/iokit/Kernel/IOPMPowerStateQueue.cpp
@@ -2,64 +2,31 @@
  * Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
  * @APPLE_LICENSE_HEADER_END@
  */
  
 #include "IOPMPowerStateQueue.h"
-#include "IOKit/IOLocks.h"
 #undef super
 #define super IOEventSource
 OSDefineMetaClassAndStructors(IOPMPowerStateQueue, IOEventSource);
-
-#ifdef __i386__ /* ppc does this right and doesn't need these routines */
-static
-void *	OSDequeueAtomic(void ** inList, SInt32 inOffset)
-{
-	void *	oldListHead;
-	void *	newListHead;
-
-	do {
-		oldListHead = *inList;
-		if (oldListHead == NULL) {
-			break;
-		}
-		
-		newListHead = *(void **) (((char *) oldListHead) + inOffset);
-	} while (! OSCompareAndSwap((UInt32)oldListHead,
-					(UInt32)newListHead, (UInt32 *)inList));
-	return oldListHead;
-}
-
-static
-void	OSEnqueueAtomic(void ** inList, void * inNewLink, SInt32 inOffset)
-{
-	void *	oldListHead;
-	void *	newListHead = inNewLink;
-	void **	newLinkNextPtr = (void **) (((char *) inNewLink) + inOffset);
-
-	do {
-		oldListHead = *inList;
-		*newLinkNextPtr = oldListHead;
-	} while (! OSCompareAndSwap((UInt32)oldListHead, (UInt32)newListHead,
-					(UInt32 *)inList));
-}
-#endif /* __i386__ */
-
 
 IOPMPowerStateQueue *IOPMPowerStateQueue::PMPowerStateQueue(OSObject *inOwner)
 {
@@ -80,9 +47,7 @@
 
     // Queue of powerstate changes
     changes = NULL;
-#ifdef __i386__
-    if (!(tmpLock = IOLockAlloc()))  panic("IOPMPowerStateQueue::init can't alloc lock");
-#endif
+
     return true;
 }
 
@@ -99,13 +64,8 @@
     new_one->target = inTarget;
     
     // Change to queue
-#ifdef __i386__
-    IOLockLock(tmpLock);
-#endif
     OSEnqueueAtomic((void **)&changes, (void *)new_one, 0);
-#ifdef __i386__
-    IOLockUnlock(tmpLock);
-#endif
+    
     signalWorkAvailable();
 
     return true;
@@ -120,14 +80,8 @@
     UInt16                      theAction;
     
     // Dequeue and process the state change request
-#ifdef __i386__
-    IOLockLock(tmpLock);
-#endif
     if((theNode = (PowerChangeEntry *)OSDequeueAtomic((void **)&changes, 0)))
     {
-#ifdef __i386__
-      IOLockUnlock(tmpLock);
-#endif
         theState = theNode->state;
         theTarget = theNode->target;
         theAction = theNode->actionType;
@@ -136,15 +90,11 @@
         switch (theAction)
         {
             case kUnIdle:
-                theTarget->command_received((void *)theState, 0, 0, 0);
+                theTarget->command_received(theState, 0, 0, 0);
                 break;
         }
     }
-#ifdef __i386__
-    else {
-      IOLockUnlock(tmpLock);
-    }
-#endif
+
     // Return true if there's more work to be done
     if(changes) return true;
     else return false;