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From: miaoqing@codeaurora.org
To: kvalo@qca.qualcomm.com
Cc: linux-wireless@vger.kernel.org, ath9k-devel@qca.qualcomm.com,
	linux-crypto@vger.kernel.org, smueller@chronox.de,
	jason@lakedaemon.net, pouyans@qti.qualcomm.com,
	Miaoqing Pan <miaoqing@codeaurora.org>
Subject: [PATCH 1/2] ath9k: change entropy formula for easier understanding
Date: Tue,  9 Aug 2016 15:02:26 +0800	[thread overview]
Message-ID: <1470726147-30095-1-git-send-email-miaoqing@codeaurora.org> (raw)

From: Miaoqing Pan <miaoqing@codeaurora.org>

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>
---
 drivers/net/wireless/ath/ath9k/rng.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath9k/rng.c b/drivers/net/wireless/ath/ath9k/rng.c
index d38e50f..568b1c6 100644
--- a/drivers/net/wireless/ath/ath9k/rng.c
+++ b/drivers/net/wireless/ath/ath9k/rng.c
@@ -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)
 {
-- 
1.9.1


             reply	other threads:[~2016-08-09  7:02 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-09  7:02 miaoqing [this message]
2016-08-09  7:02 ` [PATCH 2/2] ath9k: disable RNG by default miaoqing
2016-08-09  7:14   ` Stephan Mueller
2016-08-09  7:14     ` Stephan Mueller
2016-08-09  7:35     ` Pan, Miaoqing
2016-08-09  8:07       ` Stephan Mueller
2016-08-09  8:58         ` Herbert Xu
2016-08-09  9:02           ` Stephan Mueller
2016-08-09  9:17             ` Herbert Xu
2016-08-09  9:17               ` Herbert Xu
2016-08-09  9:37               ` Stephan Mueller
2016-08-09  9:37                 ` Stephan Mueller
2016-08-09  9:46                 ` Herbert Xu
2016-08-09  9:56                   ` Stephan Mueller
2016-08-09  9:56                     ` Herbert Xu
2016-08-09 10:06                       ` Stephan Mueller
2016-08-09 10:24                         ` Henrique de Moraes Holschuh
2016-08-09 10:24                           ` Henrique de Moraes Holschuh
2016-08-09 17:51                           ` Jason Cooper
2016-08-10  2:35                 ` Pan, Miaoqing
2016-08-10  2:35                   ` Pan, Miaoqing
2016-08-10  5:29                   ` Stephan Mueller
2016-08-10  5:29                     ` Stephan Mueller
2016-08-10  6:04                     ` Pan, Miaoqing
2016-08-10  6:04                       ` Pan, Miaoqing
2016-08-10  6:25                       ` Stephan Mueller
2016-08-10  6:46                         ` Pan, Miaoqing
2016-08-10  6:46                           ` Pan, Miaoqing
2016-08-10  6:51                           ` Stephan Mueller
2016-08-10  7:15                             ` Pan, Miaoqing
2016-08-10  7:27                               ` Stephan Mueller
2016-08-10  7:27                                 ` Stephan Mueller
2016-08-10  7:40                                 ` Pan, Miaoqing
2016-08-10  7:40                                   ` Pan, Miaoqing
2016-08-10  7:43                                   ` Pan, Miaoqing
2016-08-10  7:43                                     ` Pan, Miaoqing
2016-08-10 13:24                                     ` Jason Cooper
2016-08-10 13:24                                       ` Jason Cooper
2016-08-11  2:54                                       ` miaoqing
2016-08-11 13:14                                         ` Jason Cooper
2016-08-11 13:14                                           ` Jason Cooper
2016-08-09 17:48   ` Jason Cooper
2016-08-09 17:48     ` Jason Cooper
2016-09-28 10:00   ` [2/2] " Kalle Valo
2016-09-27 14:53 ` [1/2] ath9k: change entropy formula for easier understanding Kalle Valo
2016-09-27 14:53   ` Kalle Valo
2016-10-13 14:23 ` Kalle Valo
2016-10-13 14:23   ` Kalle Valo

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