<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >pm_find</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="The Linux Kernel API" HREF="book1.html"><LINK REL="UP" TITLE="Power Management" HREF="c11281.html"><LINK REL="PREVIOUS" TITLE="pm_send_all" HREF="r11425.html"><LINK REL="NEXT" TITLE="Block Devices" HREF="c11504.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >The Linux Kernel API</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="r11425.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="c11504.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="AEN11466" ></A ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >pm_find</SPAN ></SPAN ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN11470" ></A ><H2 >Name</H2 >pm_find -- find a device </DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN11473" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN11475" ></A ><P ></P ><P ><CODE ><CODE CLASS="FUNCDEF" >struct pm_dev * <TT CLASS="FUNCTION" >pm_find </TT ></CODE >(pm_dev_t <TT CLASS="PARAMETER" ><I >type</I ></TT >, struct pm_dev * <TT CLASS="PARAMETER" ><I >from</I ></TT >);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN11483" ></A ><H2 >Arguments</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="PARAMETER" ><I >type</I ></TT ></DT ><DD ><P > type of device </P ></DD ><DT ><TT CLASS="PARAMETER" ><I >from</I ></TT ></DT ><DD ><P > where to start looking </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN11496" ></A ><H2 >Description</H2 ><P > Scan the power management list for devices of a specific type. The return value for a matching device may be passed to further calls to this function to find further matches. A <TT CLASS="CONSTANT" >NULL</TT > indicates the end of the list. </P ><P > To search from the beginning pass <TT CLASS="CONSTANT" >NULL</TT > as the <TT CLASS="PARAMETER" ><I >from</I ></TT > value. </P ><P > The caller MUST hold the pm_devs_lock lock when calling this function. The instant that the lock is dropped all pointers returned may become invalid. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="r11425.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="c11504.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >pm_send_all</SPAN ></SPAN ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c11281.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Block Devices</TD ></TR ></TABLE ></DIV ></BODY ></HTML >