diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 1643e9e53655..3f1c4fcbe0aa 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -78,7 +78,7 @@ static unsigned long lock_rtas(void)
 
 	local_irq_save(flags);
 	preempt_disable();
-	arch_spin_lock_flags(&rtas.lock, flags);
+	arch_spin_lock(&rtas.lock);
 	return flags;
 }