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[22/24] crypto: atmel-aes: change the DMA threshold

Message ID 4b6dbda450970ac204c1b561278396d02b27dc7f.1450366831.git.cyrille.pitchen@atmel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Cyrille Pitchen Dec. 17, 2015, 5:13 p.m. UTC 
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>
---
 drivers/crypto/atmel-aes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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 {