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crypto: talitos - move to generic async completion

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The talitos driver starts several async crypto ops and  waits for their
completions. Move it over to generic code doing the same.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Tested-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef 2017-10-18 08:00:49 +01:00 committed by Herbert Xu
parent 646710419a
commit f1c90ac3d7
1 changed files with 5 additions and 33 deletions
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38
drivers/crypto/talitos.c
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@ -2160,22 +2160,6 @@ static int ahash_import(struct ahash_request *areq, const void *in)
return 0;
}
struct keyhash_result {
struct completion completion;
int err;
};
static void keyhash_complete(struct crypto_async_request *req, int err)
{
struct keyhash_result *res = req->data;
if (err == -EINPROGRESS)
return;
res->err = err;
complete(&res->completion);
}
static int keyhash(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen,
u8 *hash)
{
@ -2183,10 +2167,10 @@ static int keyhash(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen,
struct scatterlist sg[1];
struct ahash_request *req;
struct keyhash_result hresult;
struct crypto_wait wait;
int ret;
init_completion(&hresult.completion);
crypto_init_wait(&wait);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req)
@ -2195,25 +2179,13 @@ static int keyhash(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen,
/* Keep tfm keylen == 0 during hash of the long key */
ctx->keylen = 0;
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
keyhash_complete, &hresult);
crypto_req_done, &wait);
sg_init_one(&sg[0], key, keylen);
ahash_request_set_crypt(req, sg, hash, keylen);
ret = crypto_ahash_digest(req);
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&hresult.completion);
if (!ret)
ret = hresult.err;
break;
default:
break;
}
ret = crypto_wait_req(crypto_ahash_digest(req), &wait);
ahash_request_free(req);
return ret;