<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >probe_irq_mask</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="Interrupt Handling" HREF="c7962.html#AEN7964"><LINK REL="PREVIOUS" TITLE="enable_irq" HREF="r8021.html"><LINK REL="NEXT" TITLE="MTRR Handling" HREF="x8078.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="r8021.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x8078.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="AEN8049" ></A ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >probe_irq_mask</SPAN ></SPAN ></H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN8053" ></A ><H2 >Name</H2 >probe_irq_mask -- scan a bitmap of interrupt lines </DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN8056" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN8058" ></A ><P ></P ><P ><CODE ><CODE CLASS="FUNCDEF" >unsigned int <TT CLASS="FUNCTION" >probe_irq_mask </TT ></CODE >(unsigned long <TT CLASS="PARAMETER" ><I >val</I ></TT >);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8064" ></A ><H2 >Arguments</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="PARAMETER" ><I >val</I ></TT ></DT ><DD ><P > mask of interrupts to consider </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8072" ></A ><H2 >Description</H2 ><P > Scan the ISA bus interrupt lines and return a bitmap of active interrupts. The interrupt probe logic state is then returned to its previous value. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN8075" ></A ><H2 >Note</H2 ><P > we need to scan all the irq's even though we will only return ISA irq numbers - just so that we reset them all to a known 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="r8021.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="x8078.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >enable_irq</SPAN ></SPAN ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c7962.html#AEN7964" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >MTRR Handling</TD ></TR ></TABLE ></DIV ></BODY ></HTML >