[PATCH 09/20] crypto: n2 - use crypto_shash_tfm_digest()

[Eric Biggers]

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

Instead of manually allocating a 'struct shash_desc' on the stack and
calling crypto_shash_digest(), switch to using the new helper function
crypto_shash_tfm_digest() which does this for us.

Signed-off-by: Eric Biggers <ebigg...@google.com>
---
 drivers/crypto/n2_core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c
index f5c468f2cc82e9..6a828bbecea400 100644
--- a/drivers/crypto/n2_core.c
+++ b/drivers/crypto/n2_core.c
@@ -462,7 +462,6 @@ static int n2_hmac_async_setkey(struct crypto_ahash *tfm, 
const u8 *key,
        struct n2_hmac_ctx *ctx = crypto_ahash_ctx(tfm);
        struct crypto_shash *child_shash = ctx->child_shash;
        struct crypto_ahash *fallback_tfm;
-       SHASH_DESC_ON_STACK(shash, child_shash);
        int err, bs, ds;
 
        fallback_tfm = ctx->base.fallback_tfm;
@@ -470,14 +469,12 @@ static int n2_hmac_async_setkey(struct crypto_ahash *tfm, 
const u8 *key,
        if (err)
                return err;
 
-       shash->tfm = child_shash;
-
        bs = crypto_shash_blocksize(child_shash);
        ds = crypto_shash_digestsize(child_shash);
        BUG_ON(ds > N2_HASH_KEY_MAX);
        if (keylen > bs) {
-               err = crypto_shash_digest(shash, key, keylen,
-                                         ctx->hash_key);
+               err = crypto_shash_tfm_digest(child_shash, key, keylen,
+                                             ctx->hash_key);
                if (err)
                        return err;
                keylen = ds;
-- 
2.26.2