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crypto: shash - remove pointless checks of shash_alg::{export,import} 

crypto_init_shash_ops_async() only gives the ahash tfm non-NULL
->export() and ->import() if the underlying shash alg has these
non-NULL.  This doesn't make sense because when an shash algorithm is
registered, shash_prepare_alg() sets a default ->export() and ->import()
if the implementor didn't provide them.  And elsewhere it's assumed that
all shash algs and ahash tfms have non-NULL ->export() and ->import().

Therefore, remove these unnecessary, always-true conditions.

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 2019-01-06 19:08:01 -08:00 committed by Herbert Xu
parent 41a2e94f81
commit 2b091e32a2
1 changed files with 2 additions and 4 deletions
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6
crypto/shash.c
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@ -388,10 +388,8 @@ int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
crypto_ahash_set_flags(crt, crypto_shash_get_flags(shash) &
CRYPTO_TFM_NEED_KEY);
if (alg->export)
crt->export = shash_async_export;
if (alg->import)
crt->import = shash_async_import;
crt->export = shash_async_export;
crt->import = shash_async_import;
crt->reqsize = sizeof(struct shash_desc) + crypto_shash_descsize(shash);