Re: [PATCH 13/13] ath5k: Optimize ath5k_cw_validate

On Sun, Nov 20, 2011 at 09:56:28AM +0200, Nick Kossifidis wrote:

+	/* Check if cw_req + 1 a power of 2 */
+	if (!((cw_req + 1) & cw_req))
+		return cw_req;
+
+	/* Check if cw_req is a power of 2 */
+	if (!(cw_req & (cw_req - 1)))
+		return cw_req - 1;

There's is_power_of_two() in log2.h .. but this whole thing could also
be something like roundup_pow_of_two(cw) maybe?

-- 
Bob Copeland %% www.bobcopeland.com