diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index c8196fab563c..ef05aac7f9d3 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -954,7 +954,6 @@ void __rcu_irq_enter_check_tick(void)
 
 /**
  * rcu_nmi_enter - inform RCU of entry to NMI context
- * @irq: Is this call from rcu_irq_enter?
  *
  * If the CPU was idle from RCU's viewpoint, update rdp->dynticks and
  * rdp->dynticks_nmi_nesting to let the RCU grace-period handling know