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crypto: atmel_sha - remove unused shash fallback instance. 

The fallback is never used, so there is no point in having it.

The cra_exit routine can also be removed, since all it did was releasing
the fallback, along with the stub around cra_init, which just added an
unused NULL argument.

Signed-off-by: Svenning Soerensen <sss@secomea.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Svenning Sørensen 2014-12-05 01:18:57 +01:00 committed by Herbert Xu
parent 7e77bdebff
commit be95f0fa0c
1 changed files with 6 additions and 44 deletions
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50
drivers/crypto/atmel-sha.c
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@ -102,10 +102,6 @@ struct atmel_sha_ctx {
struct atmel_sha_dev *dd;
unsigned long flags;
/* fallback stuff */
struct crypto_shash *fallback;
};
#define ATMEL_SHA_QUEUE_LENGTH 50
@ -974,19 +970,8 @@ static int atmel_sha_digest(struct ahash_request *req)
return atmel_sha_init(req) ?: atmel_sha_finup(req);
}
static int atmel_sha_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base)
static int atmel_sha_cra_init(struct crypto_tfm *tfm)
{
struct atmel_sha_ctx *tctx = crypto_tfm_ctx(tfm);
const char *alg_name = crypto_tfm_alg_name(tfm);
/* Allocate a fallback and abort if it failed. */
tctx->fallback = crypto_alloc_shash(alg_name, 0,
CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(tctx->fallback)) {
pr_err("atmel-sha: fallback driver '%s' could not be loaded.\n",
alg_name);
return PTR_ERR(tctx->fallback);
}
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
sizeof(struct atmel_sha_reqctx) +
SHA_BUFFER_LEN + SHA512_BLOCK_SIZE);
@ -994,19 +979,6 @@ static int atmel_sha_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base)
return 0;
}
static int atmel_sha_cra_init(struct crypto_tfm *tfm)
{
return atmel_sha_cra_init_alg(tfm, NULL);
}
static void atmel_sha_cra_exit(struct crypto_tfm *tfm)
{
struct atmel_sha_ctx *tctx = crypto_tfm_ctx(tfm);
crypto_free_shash(tctx->fallback);
tctx->fallback = NULL;
}
static struct ahash_alg sha_1_256_algs[] = {
{
.init = atmel_sha_init,
@ -1020,14 +992,12 @@ static struct ahash_alg sha_1_256_algs[] = {
.cra_name = "sha1",
.cra_driver_name = "atmel-sha1",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_flags = CRYPTO_ALG_ASYNC,
.cra_blocksize = SHA1_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_sha_ctx),
.cra_alignmask = 0,
.cra_module = THIS_MODULE,
.cra_init = atmel_sha_cra_init,
.cra_exit = atmel_sha_cra_exit,
}
}
},
@ -1043,14 +1013,12 @@ static struct ahash_alg sha_1_256_algs[] = {
.cra_name = "sha256",
.cra_driver_name = "atmel-sha256",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_flags = CRYPTO_ALG_ASYNC,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_sha_ctx),
.cra_alignmask = 0,
.cra_module = THIS_MODULE,
.cra_init = atmel_sha_cra_init,
.cra_exit = atmel_sha_cra_exit,
}
}
},
@ -1068,14 +1036,12 @@ static struct ahash_alg sha_224_alg = {
.cra_name = "sha224",
.cra_driver_name = "atmel-sha224",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_flags = CRYPTO_ALG_ASYNC,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_sha_ctx),
.cra_alignmask = 0,
.cra_module = THIS_MODULE,
.cra_init = atmel_sha_cra_init,
.cra_exit = atmel_sha_cra_exit,
}
}
};
@ -1093,14 +1059,12 @@ static struct ahash_alg sha_384_512_algs[] = {
.cra_name = "sha384",
.cra_driver_name = "atmel-sha384",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_flags = CRYPTO_ALG_ASYNC,
.cra_blocksize = SHA384_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_sha_ctx),
.cra_alignmask = 0x3,
.cra_module = THIS_MODULE,
.cra_init = atmel_sha_cra_init,
.cra_exit = atmel_sha_cra_exit,
}
}
},
@ -1116,14 +1080,12 @@ static struct ahash_alg sha_384_512_algs[] = {
.cra_name = "sha512",
.cra_driver_name = "atmel-sha512",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK,
.cra_flags = CRYPTO_ALG_ASYNC,
.cra_blocksize = SHA512_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct atmel_sha_ctx),
.cra_alignmask = 0x3,
.cra_module = THIS_MODULE,
.cra_init = atmel_sha_cra_init,
.cra_exit = atmel_sha_cra_exit,
}
}
},