1 files changed, 4 insertions, 1 deletions

diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c
index 452d4350ce42..e303cb1ef2f4 100644
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -64,7 +64,10 @@ int __init __dt_register_buses(const char *bus0, const char *bus1)
                 panic("device tree not present");
 
         strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
-        strlcpy(of_ids[1].compatible, bus1, sizeof(of_ids[1].compatible));
+        if (bus1) {
+                strlcpy(of_ids[1].compatible, bus1,
+                        sizeof(of_ids[1].compatible));
+        }
 
         if (of_platform_populate(NULL, of_ids, NULL, NULL))
                 panic("failed to populate DT");