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crypto: chacha20-simd - Use generic code for small requests 

On 16-byte requests the optimised version is actually slower than
the generic code, so we should simply use that instead.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Cheers,
This commit is contained in:
Herbert Xu 2016-06-20 13:19:17 +08:00
parent fd2efd93b6
commit 7ea0da1d75
1 changed files with 1 additions and 1 deletions
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2
arch/x86/crypto/chacha20_glue.c
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@ -70,7 +70,7 @@ static int chacha20_simd(struct blkcipher_desc *desc, struct scatterlist *dst,
struct blkcipher_walk walk;
int err;
if (!may_use_simd())
if (nbytes <= CHACHA20_BLOCK_SIZE || !may_use_simd())
return crypto_chacha20_crypt(desc, dst, src, nbytes);
state = (u32 *)roundup((uintptr_t)state_buf, CHACHA20_STATE_ALIGN);