xnu-792.6.61.tar.gz

[apple/xnu.git] / iokit / Drivers / platform / drvAppleIntelClock / IntelClock.cpp

diff --git a/iokit/Drivers/platform/drvAppleIntelClock/IntelClock.cpp b/iokit/Drivers/platform/drvAppleIntelClock/IntelClock.cpp
index 413f90e692e9bb977937c9f2d9880bb2ee54d228..c84abc4cee17ee654e4135dddca3cdb73346a50e 100644 (file)
--- a/iokit/Drivers/platform/drvAppleIntelClock/IntelClock.cpp
+++ b/iokit/Drivers/platform/drvAppleIntelClock/IntelClock.cpp
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 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 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
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -32,19 +29,16 @@
 #define super IOService
 OSDefineMetaClassAndStructors(AppleIntelClock, IOService);
 
-extern "C" {
-extern void    hardclock(void);
-};
-
 bool
 AppleIntelClock::start(IOService *provider)
 {
        if (!super::start(provider))
                return false;
 
-       provider->registerInterrupt(kIRQ_Clock, 0, (IOInterruptAction) hardclock);
-       provider->enableInterrupt(kIRQ_Clock);
-
+       /*
+        * The clock is already provided by the kernel, so all we need 
+        * here is publish its availability for any IOKit client to use.
+        */
        publishResource("IORTC", this);
        return true;
 }