1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>sata_link_debounce</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="libATA Developer's Guide"><link rel="up" href="libataExt.html" title="Chapter&#160;4.&#160;libata Library"><link rel="prev" href="API-ata-wait-after-reset.html" title="ata_wait_after_reset"><link rel="next" href="API-sata-link-resume.html" title="sata_link_resume"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">sata_link_debounce</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-ata-wait-after-reset.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;4.&#160;libata Library</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-sata-link-resume.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-sata-link-debounce"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sata_link_debounce &#8212; 
2     debounce SATA phy status
3 </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 <b class="fsfunc">sata_link_debounce </b>(</code></td><td>struct ata_link * <var class="pdparam">link</var>, </td></tr><tr><td>&#160;</td><td>const unsigned long * <var class="pdparam">params</var>, </td></tr><tr><td>&#160;</td><td>unsigned long <var class="pdparam">deadline</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1123613124"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>link</code></em></span></dt><dd><p>
4     ATA link to debounce SATA phy status for
5    </p></dd><dt><span class="term"><em class="parameter"><code>params</code></em></span></dt><dd><p>
6     timing parameters { interval, duratinon, timeout } in msec
7    </p></dd><dt><span class="term"><em class="parameter"><code>deadline</code></em></span></dt><dd><p>
8     deadline jiffies for the operation
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1123616748"></a><h2>Description</h2><p>
10   Make sure SStatus of <em class="parameter"><code>link</code></em> reaches stable state, determined by
11   holding the same value where DET is not 1 for <em class="parameter"><code>duration</code></em> polled
12   every <em class="parameter"><code>interval</code></em>, before <em class="parameter"><code>timeout</code></em>.  Timeout constraints the
13   beginning of the stable state.  Because DET gets stuck at 1 on
14   some controllers after hot unplugging, this functions waits
15   until timeout then returns 0 if DET is stable at 1.
16   </p><p>
17
18   <em class="parameter"><code>timeout</code></em> is further limited by <em class="parameter"><code>deadline</code></em>.  The sooner of the
19   two is used.
20</p></div><div class="refsect1"><a name="idp1123619692"></a><h2>LOCKING</h2><p>
21   Kernel thread context (may sleep)
22</p></div><div class="refsect1"><a name="idp1123620316"></a><h2>RETURNS</h2><p>
23   0 on success, -errno on failure.
24</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-ata-wait-after-reset.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="libataExt.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-sata-link-resume.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">ata_wait_after_reset</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">sata_link_resume</span></td></tr></table></div></body></html>
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