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-rw-r--r--arch/powerpc/kernel/prom.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index d50c8df0183e..535a33e4aa37 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -491,7 +491,12 @@ void __init finish_device_tree(void)
size = 16;
finish_node(allnodes, &size, 1);
size -= 16;
- end = start = (unsigned long) __va(lmb_alloc(size, 128));
+
+ if (0 == size)
+ end = start = 0;
+ else
+ end = start = (unsigned long)__va(lmb_alloc(size, 128));
+
finish_node(allnodes, &end, 0);
BUG_ON(end != start + size);