From d2f2ef3a8fdb729f771e0512efa0b61b4b2287d3 Mon Sep 17 00:00:00 2001
From: Magliano Andrea <masterblaster@tiscali.it>
Date: Tue, 1 Mar 2011 08:42:05 +0100
Subject: [PATCH] Don't leave Value32 uinitialized (as it's not completely
 filled)

OsdHardware.c:AcpiOsReadPort() casts Value to (u_int8_t *) resp.
(u_int16_t *) when assigning, thus leaving the upper region of Value32
untouched. If Value32 isn't initialized, random data remains trashing
the whole value.

Without this every bus_space_read_[12] is virtually screwed up.
---
 sys/contrib/dev/acpica-unix/executer/exregion.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/contrib/dev/acpica-unix/executer/exregion.c b/sys/contrib/dev/acpica-unix/executer/exregion.c
index 2a308dbeee..75e3a85cea 100644
--- a/sys/contrib/dev/acpica-unix/executer/exregion.c
+++ b/sys/contrib/dev/acpica-unix/executer/exregion.c
@@ -388,7 +388,7 @@ AcpiExSystemIoSpaceHandler (
     void                    *RegionContext)
 {
     ACPI_STATUS             Status = AE_OK;
-    UINT32                  Value32;
+    UINT32                  Value32 = 0;
 
 
     ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler);
-- 
2.41.0