crypto: chacha20-generic - don't unnecessarily use atomic walk

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 <ard.biesheuvel@linaro.org>
Acked-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/chacha20_generic.c b/crypto/chacha20_generic.c
index 3ae9658..3529521 100644 (file)
--- 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);