From 313140cbb12019660e435dfbb4f2886df269830c Mon Sep 17 00:00:00 2001
From: Ian Campbell <ian.campbell@citrix.com>
Date: Mon, 21 Jan 2013 12:40:28 +0000
Subject: [PATCH] device-tree: get_val cannot cope with cells > 2, add
 early_panic

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
---
 xen/common/device_tree.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index 8b4ef2f45c..260c2d4862 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -84,6 +84,9 @@ static void __init get_val(const u32 **cell, u32 cells, u64 *val)
 {
     *val = 0;
 
+    if ( cells > 2 )
+        early_panic("dtb value contains > 2 cells\n");
+
     while ( cells-- )
     {
         *val <<= 32;
-- 
2.30.2