diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/ActiveDataAvailableNotifier.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/inc/ActiveDataAvailableNotifier.h	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,60 @@
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#ifndef __ACTIVEDATAAVAILABLENOTIFIER_H__
+#define __ACTIVEDATAAVAILABLENOTIFIER_H__
+
+#include <e32base.h>
+#include <d32usbc.h>
+
+class RDevUsbcClient;
+class MNotifyDataAvailableObserver;
+
+NONSHARABLE_CLASS(CActiveDataAvailableNotifier) : public CActive
+/**
+ * Active object used to notify the parent when there is data available 
+ * to be read from the LDD.  Since the LDD does not support this functionality 
+ * directly RDevUsbcClient::ReadOneOrMore() is used instead, specifying a 
+ * zero byte read into a descriptor which is owned by the class.
+ */
+	{
+public: 									   
+	static CActiveDataAvailableNotifier* NewL(MNotifyDataAvailableObserver& aParent, 
+		RDevUsbcClient& aLdd, TEndpointNumber aEndpoint);
+	~CActiveDataAvailableNotifier();
+
+public:
+	void NotifyDataAvailable();
+
+private:
+	CActiveDataAvailableNotifier(MNotifyDataAvailableObserver& aParent, 
+		RDevUsbcClient& aLdd, TEndpointNumber aEndpoint);
+
+private: // from CActive
+	virtual void DoCancel();
+	virtual void RunL();
+
+private: // unowned
+	MNotifyDataAvailableObserver& iParent;
+	RDevUsbcClient& iLdd;
+
+private: // owned
+	TEndpointNumber iEndpoint;
+	TBuf8<1> iUnusedBuf;	// passed to the LDD in order to carry out the zero byte read (length must be > 0)
+	};
+
+#endif // __ACTIVEDATAAVAILABLENOTIFIER_H__