[PATCH] pkcs7: use crypto_shash_digest()

[Eric Biggers]

From: Eric Biggers <ebigg...@google.com>

Use crypto_shash_digest() instead of crypto_shash_init() followed by
crypto_shash_finup().  (For simplicity only; they are equivalent.)

Signed-off-by: Eric Biggers <ebigg...@google.com>
---
 crypto/asymmetric_keys/pkcs7_verify.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/crypto/asymmetric_keys/pkcs7_verify.c 
b/crypto/asymmetric_keys/pkcs7_verify.c
index 063d6745c741..1647313872aa 100644
--- a/crypto/asymmetric_keys/pkcs7_verify.c
+++ b/crypto/asymmetric_keys/pkcs7_verify.c
@@ -59,11 +59,8 @@ static int pkcs7_digest(struct pkcs7_message *pkcs7,
        desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
 
        /* Digest the message [RFC2315 9.3] */
-       ret = crypto_shash_init(desc);
-       if (ret < 0)
-               goto error;
-       ret = crypto_shash_finup(desc, pkcs7->data, pkcs7->data_len,
-                                sig->digest);
+       ret = crypto_shash_digest(desc, pkcs7->data, pkcs7->data_len,
+                                 sig->digest);
        if (ret < 0)
                goto error;
        pr_devel("MsgDigest = [%*ph]\n", 8, sig->digest);
-- 
2.15.0