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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>sata_scr_write</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="libATA Developer's Guide" /><link rel="up" href="ch04.html" title="Chapter 4. libata Library" /><link rel="prev" href="re42.html" title="sata_scr_read" /><link rel="next" href="re44.html" title="sata_scr_write_flush" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>sata_scr_write</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re42.html">Prev</a> </td><th width="60%" align="center">Chapter 4. libata Library</th><td width="20%" align="right"> <a accesskey="n" href="re44.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="sata_scr_write"><a id="API-sata-scr-write"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sata_scr_write —
write SCR register of the specified port
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">int <b class="fsfunc">sata_scr_write </b>(</code></td><td>struct ata_link * <var class="pdparam">link</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">reg</var>, </td></tr><tr><td> </td><td>u32 <var class="pdparam">val</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2865620"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>link</code></em></span></dt><dd><p>
ATA link to write SCR for
</p></dd><dt><span class="term"><em class="parameter"><code>reg</code></em></span></dt><dd><p>
SCR to write
</p></dd><dt><span class="term"><em class="parameter"><code>val</code></em></span></dt><dd><p>
value to write
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2865678"></a><h2>Description</h2><p>
Write <em class="parameter"><code>val</code></em> to SCR register <em class="parameter"><code>reg</code></em> of <em class="parameter"><code>link</code></em>. This function is
guaranteed to succeed if <em class="parameter"><code>link</code></em> is ap->link, the cable type of
the port is SATA and the port implements ->scr_read.
</p></div><div class="refsect1" title="LOCKING"><a id="id2865713"></a><h2>LOCKING</h2><p>
None if <em class="parameter"><code>link</code></em> is ap->link. Kernel thread context otherwise.
</p></div><div class="refsect1" title="RETURNS"><a id="id2865730"></a><h2>RETURNS</h2><p>
0 on success, negative errno on failure.
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