From 750de28179f51efcecf2df1986558b0f87175f5d Mon Sep 17 00:00:00 2001
From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Tue, 11 Mar 2008 17:12:14 -0300
Subject: [PATCH] Zero ioport_opaque on isa_unassign_ioport

If the io port is unassigned, the previous private pointer is
meaningless.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
 vl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vl.c b/vl.c
index 74183627f6..562786296b 100644
--- a/vl.c
+++ b/vl.c
@@ -399,6 +399,8 @@ void isa_unassign_ioport(int start, int length)
         ioport_write_table[0][i] = default_ioport_writeb;
         ioport_write_table[1][i] = default_ioport_writew;
         ioport_write_table[2][i] = default_ioport_writel;
+
+        ioport_opaque[i] = NULL;
     }
 }
 
-- 
2.11.4.GIT