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crypto: ccp - use crypto_shash_tfm_digest()

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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.

Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2020-05-01 22:31:07 -07:00 committed by Herbert Xu
parent 7e3e48d86b
commit f32b6775c7
1 changed files with 2 additions and 7 deletions
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9
drivers/crypto/ccp/ccp-crypto-sha.c
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@ -272,9 +272,6 @@ static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key,
{
struct ccp_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
struct crypto_shash *shash = ctx->u.sha.hmac_tfm;
SHASH_DESC_ON_STACK(sdesc, shash);
unsigned int block_size = crypto_shash_blocksize(shash);
unsigned int digest_size = crypto_shash_digestsize(shash);
int i, ret;
@ -289,10 +286,8 @@ static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key,
if (key_len > block_size) {
/* Must hash the input key */
sdesc->tfm = shash;
ret = crypto_shash_digest(sdesc, key, key_len,
ctx->u.sha.key);
ret = crypto_shash_tfm_digest(shash, key, key_len,
ctx->u.sha.key);
if (ret)
return -EINVAL;