linux-kernel - [PATCH 5/6] crypto: stm32-hash: convert to the new crypto engine API

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Date:   Wed,  3 Jan 2018 21:11:08 +0100
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     alexandre.torgue@...com, arei.gonglei@...wei.com, corbet@....net,
        davem@...emloft.net, herbert@...dor.apana.org.au,
        jasowang@...hat.com, mcoquelin.stm32@...il.com, mst@...hat.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, fabien.dessenne@...com,
        Corentin Labbe <clabbe.montjoie@...il.com>
Subject: [PATCH 5/6] crypto: stm32-hash: convert to the new crypto engine API

This patch convert the stm32-hash driver to the new crypto engine API.

Signed-off-by: Corentin Labbe <clabbe.montjoie@...il.com>
---
 drivers/crypto/stm32/stm32-hash.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index 4ca4a264a833..9790c2c936c7 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -122,6 +122,7 @@ enum stm32_hash_data_format {
 #define HASH_DMA_THRESHOLD		50
 
 struct stm32_hash_ctx {
+	struct crypto_engine_reqctx enginectx;
 	struct stm32_hash_dev	*hdev;
 	unsigned long		flags;
 
@@ -828,6 +829,11 @@ static int stm32_hash_hw_init(struct stm32_hash_dev *hdev,
 	return 0;
 }
 
+static int stm32_hash_one_request(struct crypto_engine *engine,
+				  void *areq);
+static int stm32_hash_prepare_req(struct crypto_engine *engine,
+				  void *areq);
+
 static int stm32_hash_handle_queue(struct stm32_hash_dev *hdev,
 				   struct ahash_request *req)
 {
@@ -835,8 +841,9 @@ static int stm32_hash_handle_queue(struct stm32_hash_dev *hdev,
 }
 
 static int stm32_hash_prepare_req(struct crypto_engine *engine,
-				  struct ahash_request *req)
+				  void *areq)
 {
+	struct ahash_request *req = container_of(areq, struct ahash_request, base);
 	struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
 	struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
 	struct stm32_hash_request_ctx *rctx;
@@ -855,8 +862,9 @@ static int stm32_hash_prepare_req(struct crypto_engine *engine,
 }
 
 static int stm32_hash_one_request(struct crypto_engine *engine,
-				  struct ahash_request *req)
+				  void *areq)
 {
+	struct ahash_request *req = container_of(areq, struct ahash_request, base);
 	struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
 	struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
 	struct stm32_hash_request_ctx *rctx;
@@ -1033,6 +1041,9 @@ static int stm32_hash_cra_init_algs(struct crypto_tfm *tfm,
 	if (algs_hmac_name)
 		ctx->flags |= HASH_FLAGS_HMAC;
 
+	ctx->enginectx.op.do_one_request = stm32_hash_one_request;
+	ctx->enginectx.op.prepare_request = stm32_hash_prepare_req;
+	ctx->enginectx.op.unprepare_request = NULL;
 	return 0;
 }
 
@@ -1493,9 +1504,6 @@ static int stm32_hash_probe(struct platform_device *pdev)
 		goto err_engine;
 	}
 
-	hdev->engine->prepare_hash_request = stm32_hash_prepare_req;
-	hdev->engine->hash_one_request = stm32_hash_one_request;
-
 	ret = crypto_engine_start(hdev->engine);
 	if (ret)
 		goto err_engine_start;
-- 
2.13.6