<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >pci_set_power_state</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="PCI Support Library" HREF="x8182.html"><LINK REL="PREVIOUS" TITLE="pci_find_parent_resource" HREF="r8422.html"><LINK REL="NEXT" TITLE="pci_save_state" HREF="r8491.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="r8422.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="r8491.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="AEN8455" ></A ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >pci_set_power_state</SPAN ></SPAN ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN8459" ></A ><H2 >Name</H2 >pci_set_power_state -- Set the power state of a PCI device </DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN8462" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN8464" ></A ><P ></P ><P ><CODE ><CODE CLASS="FUNCDEF" >int <TT CLASS="FUNCTION" >pci_set_power_state </TT ></CODE >(struct pci_dev * <TT CLASS="PARAMETER" ><I >dev</I ></TT >, int <TT CLASS="PARAMETER" ><I >state</I ></TT >);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8472" ></A ><H2 >Arguments</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="PARAMETER" ><I >dev</I ></TT ></DT ><DD ><P > PCI device to be suspended </P ></DD ><DT ><TT CLASS="PARAMETER" ><I >state</I ></TT ></DT ><DD ><P > Power state we're entering </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8485" ></A ><H2 >Description</H2 ><P > Transition a device to a new power state, using the Power Management Capabilities in the device's config space. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8488" ></A ><H2 >RETURN VALUE</H2 ><P > -EINVAL if trying to enter a lower state than we're already in. 0 if we're already in the requested state. -EIO if device does not support PCI PM. 0 if we can successfully change the power state. </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="r8422.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="r8491.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >pci_find_parent_resource</SPAN ></SPAN ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="x8182.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >pci_save_state</SPAN ></SPAN ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >