Re: [PATCH net] mlx4_en: set number of rx rings used by RSS using ethtool

From: Yevgeny Petrilin <redacted>
Date: Tue, 17 Jan 2012 18:50:24 +0200

+	/* RSS table size must be an order of 2 */
+	if (rss_rings != (1 << order_base_2(rss_rings)))
+		return -EINVAL;

This is an obscure way to make this kind of test.

The canonical way is:

	if (is_power_of_2(rss_rings))