diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 9820c67ba47d..4df269f5d9ac 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3374,7 +3374,7 @@ int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
 }
 EXPORT_SYMBOL(ib_cm_init_qp_attr);
 
-void cm_get_ack_delay(struct cm_device *cm_dev)
+static void cm_get_ack_delay(struct cm_device *cm_dev)
 {
 	struct ib_device_attr attr;