[Xen-devel] [PATCH 4/8] device-tree: get_val cannot cope with cells > 2, add early_panic

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
v3: early_panic instead of BUG_ON
v2: drop unrelated white space fixup
---
 xen/common/device_tree.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index 9eb316f..5a0a1a6 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -58,6 +58,9 @@ 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;
-- 
1.7.9.1


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