Subject: [PATCH v4 02/14] crypto: chacha20-generic - don't unnecessarily use atomic walk

From: [email-masked] (Eric Biggers)
Date: Fri, 16 Nov 2018 17:26:19 -0800

From: Eric Biggers <[email-masked]>

chacha20-generic doesn't use SIMD instructions or otherwise disable
preemption, so passing atomic=true to skcipher_walk_virt() is
unnecessary.

Suggested-by: Ard Biesheuvel <[email-masked]>
Acked-by: Martin Willi <[email-masked]>
Signed-off-by: Eric Biggers <[email-masked]>
---
 crypto/chacha20_generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/chacha20_generic.c b/crypto/chacha20_generic.c
index 3ae96587caf9..3529521d72a4 100644
--- a/crypto/chacha20_generic.c
+++ b/crypto/chacha20_generic.c
@@ -81,7 +81,7 @@ int crypto_chacha20_crypt(struct skcipher_request *req)
 	u32 state[16];
 	int err;
 
-	err = skcipher_walk_virt(&walk, req, true);
+	err = skcipher_walk_virt(&walk, req, false);
 
 	crypto_chacha20_init(state, ctx, walk.iv);
 
-- 
2.19.1.1215.g8438c0b245-goog