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Subject[PATCH v5 17/19] crypto: qce: move to generic async completion
Date
The qce 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>
---
drivers/crypto/qce/sha.c | 30 ++++--------------------------
1 file changed, 4 insertions(+), 26 deletions(-)

diff --git a/drivers/crypto/qce/sha.c b/drivers/crypto/qce/sha.c
index 47e114a..53227d7 100644
--- a/drivers/crypto/qce/sha.c
+++ b/drivers/crypto/qce/sha.c
@@ -349,28 +349,12 @@ static int qce_ahash_digest(struct ahash_request *req)
return qce->async_req_enqueue(tmpl->qce, &req->base);
}

-struct qce_ahash_result {
- struct completion completion;
- int error;
-};
-
-static void qce_digest_complete(struct crypto_async_request *req, int error)
-{
- struct qce_ahash_result *result = req->data;
-
- if (error == -EINPROGRESS)
- return;
-
- result->error = error;
- complete(&result->completion);
-}
-
static int qce_ahash_hmac_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
unsigned int digestsize = crypto_ahash_digestsize(tfm);
struct qce_sha_ctx *ctx = crypto_tfm_ctx(&tfm->base);
- struct qce_ahash_result result;
+ struct crypto_wait wait;
struct ahash_request *req;
struct scatterlist sg;
unsigned int blocksize;
@@ -405,9 +389,9 @@ static int qce_ahash_hmac_setkey(struct crypto_ahash *tfm, const u8 *key,
goto err_free_ahash;
}

- init_completion(&result.completion);
+ crypto_init_wait(&wait);
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
- qce_digest_complete, &result);
+ crypto_req_done, &wait);
crypto_ahash_clear_flags(ahash_tfm, ~0);

buf = kzalloc(keylen + QCE_MAX_ALIGN_SIZE, GFP_KERNEL);
@@ -420,13 +404,7 @@ static int qce_ahash_hmac_setkey(struct crypto_ahash *tfm, const u8 *key,
sg_init_one(&sg, buf, keylen);
ahash_request_set_crypt(req, &sg, ctx->authkey, keylen);

- ret = crypto_ahash_digest(req);
- if (ret == -EINPROGRESS || ret == -EBUSY) {
- ret = wait_for_completion_interruptible(&result.completion);
- if (!ret)
- ret = result.error;
- }
-
+ ret = crypto_wait_req(crypto_ahash_digest(req), &wait);
if (ret)
crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);

--
2.1.4
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