crypto: arm64/chacha - fix hchacha_block_neon() for big endian

On big endian arm64 kernels, the xchacha20-neon and xchacha12-neon
self-tests fail because hchacha_block_neon() outputs little endian words
but the C code expects native endianness.  Fix it to output the words in
native endianness (which also makes it match the arm32 version).

Fixes: cc7cf991e9eb ("crypto: arm64/chacha20 - add XChaCha20 support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/arch/arm64/crypto/chacha-neon-core.S b/arch/arm64/crypto/chacha-neon-core.S
index bfb80e10ff7b00483322843b97921f44004c9dc2..706c4e10e9e294c7c5de49dbbe7a784ec7ca1458 100644 (file)
--- a/arch/arm64/crypto/chacha-neon-core.S
+++ b/arch/arm64/crypto/chacha-neon-core.S
@@ -158,8 +158,8 @@ ENTRY(hchacha_block_neon)
        mov             w3, w2
        bl              chacha_permute
 
-       st1             {v0.16b}, [x1], #16
-       st1             {v3.16b}, [x1]
+       st1             {v0.4s}, [x1], #16
+       st1             {v3.4s}, [x1]
 
        ldp             x29, x30, [sp], #16
        ret