RE: [PATCH 5/5] smsc95xx: expand check_ macros

-		check_warn_return(ret, "Error reading MII_ACCESS\n");
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error reading MII_ACCESS\n");
+			return ret;
+		}
+

It might be worth defining something like:

#define check_warn(dev, ret, errmsg) \
	(ret >= 0 ? 0 : (netdev_warn(dev->net, errmsg), ret))

so the above code can be:
	if (check_warn(dev, ret, "Error reading MII_ACCESS\n"))
		return ret;

	David