linux-kernel - [RESEND PATCH 2/2] crypto: rockchip - return the err code when unable dequeue the crypto request

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Date:   Mon, 24 Jul 2017 09:23:14 +0800
From:   zain wang <wzz@...k-chips.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     jekarlson@...il.com, shawn.lin@...k-chips.com,
        linux-crypto@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        zain wang <wzz@...k-chips.com>
Subject: [RESEND PATCH 2/2] crypto: rockchip - return the err code when unable dequeue the crypto request

Sometime we would unable to dequeue the crypto request, in this case,
we should finish crypto and return the err code.

Signed-off-by: zain wang <wzz@...k-chips.com>
---
 drivers/crypto/rockchip/rk3288_crypto.c            | 19 -------------------
 drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c | 15 +++++++++++++++
 drivers/crypto/rockchip/rk3288_crypto_ahash.c      | 14 ++++++++++++++
 3 files changed, 29 insertions(+), 19 deletions(-)

diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c
index c2b1dd7..57c3783 100644
--- a/drivers/crypto/rockchip/rk3288_crypto.c
+++ b/drivers/crypto/rockchip/rk3288_crypto.c
@@ -187,27 +187,8 @@ static irqreturn_t rk_crypto_irq_handle(int irq, void *dev_id)
 static void rk_crypto_queue_task_cb(unsigned long data)
 {
 	struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
-	struct crypto_async_request *async_req, *backlog;
-	unsigned long flags;
 	int err = 0;
 
-	spin_lock_irqsave(&dev->lock, flags);
-	backlog   = crypto_get_backlog(&dev->queue);
-	async_req = crypto_dequeue_request(&dev->queue);
-	spin_unlock_irqrestore(&dev->lock, flags);
-	if (!async_req) {
-		dev_err(dev->dev, "async_req is NULL !!\n");
-		return;
-	}
-	if (backlog) {
-		backlog->complete(backlog, -EINPROGRESS);
-		backlog = NULL;
-	}
-
-	if (crypto_tfm_alg_type(async_req->tfm) == CRYPTO_ALG_TYPE_ABLKCIPHER)
-		dev->ablk_req = ablkcipher_request_cast(async_req);
-	else
-		dev->ahash_req = ahash_request_cast(async_req);
 	dev->err = 0;
 	err = dev->start(dev);
 	if (err)
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
index 8787e44..dbe78de 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
@@ -25,6 +25,7 @@ static int rk_handle_req(struct rk_crypto_info *dev,
 			 struct ablkcipher_request *req)
 {
 	unsigned long flags;
+	struct crypto_async_request *async_req, *backlog;
 	int err;
 
 	if (!IS_ALIGNED(req->nbytes, dev->align_size))
@@ -41,7 +42,21 @@ static int rk_handle_req(struct rk_crypto_info *dev,
 
 	spin_lock_irqsave(&dev->lock, flags);
 	err = ablkcipher_enqueue_request(&dev->queue, req);
+	backlog   = crypto_get_backlog(&dev->queue);
+	async_req = crypto_dequeue_request(&dev->queue);
 	spin_unlock_irqrestore(&dev->lock, flags);
+
+	if (!async_req) {
+		dev_err(dev->dev, "async_req is NULL !!\n");
+		return err;
+	}
+	if (backlog) {
+		backlog->complete(backlog, -EINPROGRESS);
+		backlog = NULL;
+	}
+
+	dev->ablk_req = ablkcipher_request_cast(async_req);
+
 	tasklet_schedule(&dev->queue_task);
 	return err;
 }
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
index 9b55585..ebc46e0 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
@@ -166,6 +166,7 @@ static int rk_ahash_digest(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
 	struct rk_ahash_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
+	struct crypto_async_request *async_req, *backlog;
 	struct rk_crypto_info *dev = NULL;
 	unsigned long flags;
 	int ret;
@@ -202,8 +203,21 @@ static int rk_ahash_digest(struct ahash_request *req)
 
 	spin_lock_irqsave(&dev->lock, flags);
 	ret = crypto_enqueue_request(&dev->queue, &req->base);
+	backlog   = crypto_get_backlog(&dev->queue);
+	async_req = crypto_dequeue_request(&dev->queue);
 	spin_unlock_irqrestore(&dev->lock, flags);
 
+	if (!async_req) {
+		dev_err(dev->dev, "async_req is NULL !!\n");
+		return ret;
+	}
+	if (backlog) {
+		backlog->complete(backlog, -EINPROGRESS);
+		backlog = NULL;
+	}
+
+	dev->ahash_req = ahash_request_cast(async_req);
+
 	tasklet_schedule(&dev->queue_task);
 
 	/*
-- 
1.9.1