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crypto: drop mask=CRYPTO_ALG_ASYNC from 'shash' tfm allocations

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'shash' algorithms are always synchronous, so passing CRYPTO_ALG_ASYNC
in the mask to crypto_alloc_shash() has no effect.  Many users therefore
already don't pass it, but some still do.  This inconsistency can cause
confusion, especially since the way the 'mask' argument works is
somewhat counterintuitive.

Thus, just remove the unneeded CRYPTO_ALG_ASYNC flags.

This patch shouldn't change any actual behavior.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers
2018-11-14 12:21:11 -08:00
committed by Herbert Xu
parent 1ad0f1603a
commit 3d234b3313
9 changed files with 13 additions and 17 deletions
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3
security/integrity/evm/evm_crypto.c
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@@ -97,8 +97,7 @@ static struct shash_desc *init_desc(char type, uint8_t hash_algo)
mutex_lock(&mutex);
if (*tfm)
goto out;
*tfm = crypto_alloc_shash(algo, 0,
CRYPTO_ALG_ASYNC | CRYPTO_NOLOAD);
*tfm = crypto_alloc_shash(algo, 0, CRYPTO_NOLOAD);
if (IS_ERR(*tfm)) {
rc = PTR_ERR(*tfm);
pr_err("Can not allocate %s (reason: %ld)\n", algo, rc);