From: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Date: Thu, 17 Dec 2015 17:13:06 +0000 (+0100)
Subject: crypto: atmel-aes - change the DMA threshold
X-Git-Tag: v4.5-rc1~129^2~8
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=129f8bb6bb882d6af49f83a1369215aeb0ccb95d;p=karo-tx-linux.git

crypto: atmel-aes - change the DMA threshold

Increase the DMA threshold to 256: PIO accesses offer better performances
than the DMA when processing small amounts of data.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index a34919f6b7d7..ea645b4ee997 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -76,7 +76,7 @@
 
 #define ATMEL_AES_QUEUE_LENGTH	50
 
-#define ATMEL_AES_DMA_THRESHOLD		16
+#define ATMEL_AES_DMA_THRESHOLD		256
 
 
 struct atmel_aes_caps {