diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index cbdf35ea0cbecc7a86f147c86356940b9d3dcd24..7a9d0de89d6a3f1afc0560a08e43918a2f539c1c 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -66,7 +66,7 @@ MODULE_PARM_DESC(c4iw_wr_log_size_order,
 
 static LIST_HEAD(uld_ctx_list);
 static DEFINE_MUTEX(dev_mutex);
-struct workqueue_struct *reg_workq;
+static struct workqueue_struct *reg_workq;
 
 #define DB_FC_RESUME_SIZE 64
 #define DB_FC_RESUME_DELAY 1