1 files changed, 9 insertions, 1 deletions

diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 89e3ef2496ac..d0b5fca6b077 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -22,7 +22,15 @@ struct device_node;
 
 static inline int cpu_to_node(int cpu)
 {
-        return numa_cpu_lookup_table[cpu];
+        int nid;
+
+        nid = numa_cpu_lookup_table[cpu];
+
+        /*
+         * During early boot, the numa-cpu lookup table might not have been
+         * setup for all CPUs yet. In such cases, default to node 0.
+         */
+        return (nid < 0) ? 0 : nid;
 }
 
 #define parent_node(node)       (node)