1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>dma_buf_attach</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Device Drivers"><link rel="up" href="ch02s03.html" title="Device Drivers DMA Management"><link rel="prev" href="API-dma-buf-put.html" title="dma_buf_put"><link rel="next" href="API-dma-buf-detach.html" title="dma_buf_detach"></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">dma_buf_attach</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-dma-buf-put.html">Prev</a>&#160;</td><th width="60%" align="center">Device Drivers DMA Management</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-dma-buf-detach.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-dma-buf-attach"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>dma_buf_attach &#8212; 
2     Add the device to dma_buf's attachments list; optionally, calls <code class="function">attach</code> of dma_buf_ops to allow device-specific attach functionality
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">struct dma_buf_attachment * <b class="fsfunc">dma_buf_attach </b>(</code></td><td>struct dma_buf * <var class="pdparam">dmabuf</var>, </td></tr><tr><td>&#160;</td><td>struct device * <var class="pdparam">dev</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1110173516"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dmabuf</code></em></span></dt><dd><p>
4     [in]	buffer to attach device to.
5    </p></dd><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
6     [in]	device to be attached.
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1110176156"></a><h2>Description</h2><p>
8   Returns struct dma_buf_attachment * for this attachment; returns ERR_PTR on
9   error.
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