Adaptation/GUID-687997B5-BDFD-49D1-947B-4AB21C3AF58C.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-687997B5-BDFD-49D1-947B-4AB21C3AF58C" xml:lang="en"><title>The
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Running Model</title><shortdesc>This document describes the model by which a device driver handles
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requests.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<section id="GUID-697C8B0A-2468-4699-82FF-2E02E3F857A0">      
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      <p>Once a logical channel and a physical channel, if appropriate, have
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been created and initialised, the driver is ready to handle requests. </p> <p>On
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the kernel-side, requests can be handled by one or more kernel-side threads,
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allowing for rich and complex behaviour. Alternatively, if appropriate, a
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request can be handled by code running in the context of the client user-side
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thread, but running in supervisor mode. </p> <p>There are two kinds of request,
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synchronous and asynchronous. </p>     </section>
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</conbody></concept>