crypto: tcrypt - fix ghash-generic speed test

ghash is a keyed hash algorithm, thus setkey needs to be called.
Otherwise the following error occurs:
$ modprobe tcrypt mode=318 sec=1
testing speed of async ghash-generic (ghash-generic)
tcrypt: test  0 (   16 byte blocks,   16 bytes per update,   1 updates):
tcrypt: hashing failed ret=-126

Cc: <stable@vger.kernel.org> # 4.6+
Fixes: 0660511c0bee ("crypto: tcrypt - Use ahash")
Tested-by: Franck Lenormand <franck.lenormand@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 3 insertions, 0 deletions

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index bdde95e8d369..6e0a054bb61d 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -1103,6 +1103,9 @@ static void test_ahash_speed_common(const char *algo, unsigned int secs,
                         break;
                 }
 
+                if (speed[i].klen)
+                        crypto_ahash_setkey(tfm, tvmem[0], speed[i].klen);
+
                 pr_info("test%3u "
                         "(%5u byte blocks,%5u bytes per update,%4u updates): ",
                         i, speed[i].blen, speed[i].plen, speed[i].blen / speed[i].plen);