Sophie: kernel-doc-3.11.10-100.fc18 noarch

kernel-doc-3.11.10-100.fc18.noarch.rpm

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>usb_ep_fifo_status</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="USB Gadget API for Linux" /><link rel="up" href="core.html" title="Core Objects and Methods" /><link rel="prev" href="API-usb-ep-set-wedge.html" title="usb_ep_set_wedge" /><link rel="next" href="API-usb-ep-fifo-flush.html" title="usb_ep_fifo_flush" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">usb_ep_fifo_status</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-usb-ep-set-wedge.html">Prev</a>&#160;</td><th width="60%" align="center">Core Objects and Methods</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-usb-ep-fifo-flush.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API-usb-ep-fifo-status"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>usb_ep_fifo_status &#8212; 
     returns number of bytes in fifo, or error
 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <strong class="fsfunc">usb_ep_fifo_status </strong>(</code></td><td>struct usb_ep * <var class="pdparam">ep</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a id="idm140476914049072"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>ep</code></em></span></dt><dd><p>
     the endpoint whose fifo status is being checked.
    </p></dd></dl></div></div><div class="refsect1"><a id="idm140476914045936"></a><h2>Description</h2><p>
   FIFO endpoints may have <span class="quote">&#8220;<span class="quote">unclaimed data</span>&#8221;</span> in them in certain cases,
   such as after aborted transfers.  Hosts may not have collected all
   the IN data written by the gadget driver (and reported by a request
   completion).  The gadget driver may not have collected all the data
   written OUT to it by the host.  Drivers that need precise handling for
   fault reporting or recovery may need to use this call.
   </p><p>

   This returns the number of such bytes in the fifo, or a negative
   errno if the endpoint doesn't use a FIFO or doesn't support such
   precise handling.
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