1 <?xml version="1.0" encoding="utf-8"?>

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     7     Nokia Corporation - initial contribution.

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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-687997B5-BDFD-49D1-947B-4AB21C3AF58C" xml:lang="en"><title>The

    13 Running Model</title><shortdesc>This document describes the model by which a device driver handles

    14 requests.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    15 <section id="GUID-697C8B0A-2468-4699-82FF-2E02E3F857A0">      

    16       <p>Once a logical channel and a physical channel, if appropriate, have

    17 been created and initialised, the driver is ready to handle requests. </p> <p>On

    18 the kernel-side, requests can be handled by one or more kernel-side threads,

    19 allowing for rich and complex behaviour. Alternatively, if appropriate, a

    20 request can be handled by code running in the context of the client user-side

    21 thread, but running in supervisor mode. </p> <p>There are two kinds of request,

    22 synchronous and asynchronous. </p>     </section>

    23 </conbody></concept>