diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c
index e67e140..fda6355 100644
--- a/arch/sh/kernel/traps_64.c
+++ b/arch/sh/kernel/traps_64.c
@@ -50,7 +50,7 @@
 	do_unhandled_exception(trapnr, signr, str, __stringify(name), error_code, regs, current); \
 }
 
-spinlock_t die_lock;
+static DEFINE_SPINLOCK(die_lock);
 
 void die(const char * str, struct pt_regs * regs, long err)
 {