diff --git a/drivers/infiniband/sw/rdmavt/cq.c b/drivers/infiniband/sw/rdmavt/cq.c
index 6ca6fa80dd6e..f2f229efbe64 100644
--- a/drivers/infiniband/sw/rdmavt/cq.c
+++ b/drivers/infiniband/sw/rdmavt/cq.c
@@ -510,6 +510,7 @@ int rvt_driver_cq_init(struct rvt_dev_info *rdi)
 
 	if (rdi->worker)
 		return 0;
+	spin_lock_init(&rdi->n_cqs_lock);
 	rdi->worker = kzalloc(sizeof(*rdi->worker), GFP_KERNEL);
 	if (!rdi->worker)
 		return -ENOMEM;