net: ethernet: wiznet: avoid format string exposure

While unlikely, this makes sure any format strings in the device name
can't exposure information via the resulting workqueue name.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/wiznet/w5100.c

@@ -1152,7 +1152,8 @@ int w5100_probe(struct device *dev, const struct w5100_ops *ops,
 	if (err < 0)
 		goto err_register;
 
-	priv->xfer_wq = alloc_workqueue(netdev_name(ndev), WQ_MEM_RECLAIM, 0);
+	priv->xfer_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0,
+					netdev_name(ndev));
 	if (!priv->xfer_wq) {
 		err = -ENOMEM;
 		goto err_wq;