Commit e463139a authored Aug 09, 2016 by Miaoqing Pan Committed by Kalle Valo Oct 13, 2016

ath9k: change entropy formula for easier understanding



The quality of ADC entropy is 10 bits of min-entropy for
a 32-bit value, change '(((x) * 8 * 320) >> 10)' to
'(((x) * 8 * 10) >> 5)' for easier understanding.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

parent ebaa4b16

drivers/net/wireless/ath/ath9k/rng.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -22,7 +22,7 @@
		#include "ar9003_phy.h"

		#define ATH9K_RNG_BUF_SIZE 320
		#define ATH9K_RNG_ENTROPY(x) (((x) * 8 * 320) >> 10) /* quality: 320/1024 */
		#define ATH9K_RNG_ENTROPY(x) (((x) * 8 * 10) >> 5) /* quality: 10/32 */

		static int ath9k_rng_data_read(struct ath_softc sc, u32 buf, u32 buf_size)
		{