diff --git a/drivers/net/ethernet/chelsio/cxgb3/t3cdev.h b/drivers/net/ethernet/chelsio/cxgb3/t3cdev.h
index 705713b56636d5162b7992d1febf085ac06817f8..3c3e6cf6aca606cb0afecc83621fd37ab06cc4a9 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/t3cdev.h
+++ b/drivers/net/ethernet/chelsio/cxgb3/t3cdev.h
@@ -60,7 +60,7 @@ struct t3cdev {
 	int (*ctl)(struct t3cdev *dev, unsigned int req, void *data);
 	void (*neigh_update)(struct t3cdev *dev, struct neighbour *neigh);
 	void *priv;		/* driver private data */
-	void *l2opt;		/* optional layer 2 data */
+	void __rcu *l2opt;	/* optional layer 2 data */
 	void *l3opt;		/* optional layer 3 data */
 	void *l4opt;		/* optional layer 4 data */
 	void *ulp;		/* ulp stuff */