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ath9k: change entropy formula for easier understanding

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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>
This commit is contained in:
Miaoqing Pan 2016-08-09 15:02:26 +08:00 committed by Kalle Valo
parent ebaa4b1620
commit e463139a72
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath9k/rng.c
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@ -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)
{