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crypto: gcm - Filter out async ghash if necessary

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As it is if you ask for a sync gcm you may actually end up with
an async one because it does not filter out async implementations
of ghash.

This patch fixes this by adding the necessary filter when looking
for ghash.

Cc: [email protected]
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Herbert Xu 2016-06-15 22:27:05 +08:00
commit b30bdfa864
1 changed files with 3 additions and 1 deletions
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4
crypto/gcm.c
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@ -639,7 +639,9 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl,
ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type,
CRYPTO_ALG_TYPE_HASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
CRYPTO_ALG_TYPE_AHASH_MASK |
crypto_requires_sync(algt->type,
algt->mask));
if (IS_ERR(ghash_alg))
return PTR_ERR(ghash_alg);