From: Ian Campbell <ian.campbell@citrix.com>
Date: Mon, 21 Jan 2013 12:40:28 +0000 (+0000)
Subject: device-tree: get_val cannot cope with cells > 2, add early_panic
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~7394
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=313140cbb12019660e435dfbb4f2886df269830c;p=xen.git

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>
---

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;