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From: Tycho Nightingale <tychon@FreeBSD.org>
Date: Fri, 6 Mar 2015 02:05:45 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r279683 - head/sys/amd64/vmm/io
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Author: tychon
Date: Fri Mar  6 02:05:45 2015
New Revision: 279683
URL: https://svnweb.freebsd.org/changeset/base/279683

Log:
  When ICW1 is issued the edge sense circuit is reset which means that
  following an initialization a low-to-high transistion is necesary to
  generate an interrupt.
  
  Reviewed by:	neel

Modified:
  head/sys/amd64/vmm/io/vatpic.c

Modified: head/sys/amd64/vmm/io/vatpic.c
==============================================================================
--- head/sys/amd64/vmm/io/vatpic.c	Fri Mar  6 00:24:21 2015	(r279682)
+++ head/sys/amd64/vmm/io/vatpic.c	Fri Mar  6 02:05:45 2015	(r279683)
@@ -275,6 +275,7 @@ vatpic_icw1(struct vatpic *vatpic, struc
 	atpic->ready = false;
 
 	atpic->icw_num = 1;
+	atpic->request = 0;
 	atpic->mask = 0;
 	atpic->lowprio = 7;
 	atpic->rd_cmd_reg = 0;