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-rw-r--r--crypto/chacha_generic.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/crypto/chacha_generic.c b/crypto/chacha_generic.c
index 90ec0ec1b4f7..a7fae9b73ec4 100644
--- a/crypto/chacha_generic.c
+++ b/crypto/chacha_generic.c
@@ -22,18 +22,16 @@ static void chacha_docrypt(u32 *state, u8 *dst, const u8 *src,
/* aligned to potentially speed up crypto_xor() */
u8 stream[CHACHA_BLOCK_SIZE] __aligned(sizeof(long));
- if (dst != src)
- memcpy(dst, src, bytes);
-
while (bytes >= CHACHA_BLOCK_SIZE) {
chacha_block(state, stream, nrounds);
- crypto_xor(dst, stream, CHACHA_BLOCK_SIZE);
+ crypto_xor_cpy(dst, src, stream, CHACHA_BLOCK_SIZE);
bytes -= CHACHA_BLOCK_SIZE;
dst += CHACHA_BLOCK_SIZE;
+ src += CHACHA_BLOCK_SIZE;
}
if (bytes) {
chacha_block(state, stream, nrounds);
- crypto_xor(dst, stream, bytes);
+ crypto_xor_cpy(dst, src, stream, bytes);
}
}