crypto: hisilicon - Adjust some inner logic

1.Adjust call back function.
2.Adjust parameter checking function.
Signed-off-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/hisilicon/sec2/sec_crypto.c

@@ -35,6 +35,8 @@
 #define SEC_TOTAL_IV_SZ		(SEC_IV_SIZE * QM_Q_DEPTH)
 #define SEC_SGL_SGE_NR		128
 #define SEC_CTX_DEV(ctx)	(&(ctx)->sec->qm.pdev->dev)
+#define SEC_SQE_CFLAG		2
+#define SEC_SQE_DONE		0x1
 
 static DEFINE_MUTEX(sec_algs_lock);
 static unsigned int sec_active_devs;
@@ -99,32 +101,34 @@ static void sec_req_cb(struct hisi_qp *qp, void *resp)
 {
 	struct sec_qp_ctx *qp_ctx = qp->qp_ctx;
 	struct sec_sqe *bd = resp;
+	struct sec_ctx *ctx;
+	struct sec_req *req;
 	u16 done, flag;
 	u8 type;
-	struct sec_req *req;
 
 	type = bd->type_cipher_auth & SEC_TYPE_MASK;
-	if (type == SEC_BD_TYPE2) {
-		req = qp_ctx->req_list[le16_to_cpu(bd->type2.tag)];
-		req->err_type = bd->type2.error_type;
-
-		done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK;
-		flag = (le16_to_cpu(bd->type2.done_flag) &
-				   SEC_FLAG_MASK) >> SEC_FLAG_OFFSET;
-		if (req->err_type || done != 0x1 || flag != 0x2)
-			dev_err(SEC_CTX_DEV(req->ctx),
-				"err_type[%d],done[%d],flag[%d]\n",
-				req->err_type, done, flag);
-	} else {
+	if (type != SEC_BD_TYPE2) {
 		pr_err("err bd type [%d]\n", type);
 		return;
 	}
 
-	atomic64_inc(&req->ctx->sec->debug.dfx.recv_cnt);
+	req = qp_ctx->req_list[le16_to_cpu(bd->type2.tag)];
+	req->err_type = bd->type2.error_type;
+	ctx = req->ctx;
+	done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK;
+	flag = (le16_to_cpu(bd->type2.done_flag) &
+		SEC_FLAG_MASK) >> SEC_FLAG_OFFSET;
+	if (req->err_type || done != SEC_SQE_DONE ||
+	    flag != SEC_SQE_CFLAG)
+		dev_err(SEC_CTX_DEV(ctx),
+			"err_type[%d],done[%d],flag[%d]\n",
+			req->err_type, done, flag);
 
-	req->ctx->req_op->buf_unmap(req->ctx, req);
+	atomic64_inc(&ctx->sec->debug.dfx.recv_cnt);
 
-	req->ctx->req_op->callback(req->ctx, req);
+	ctx->req_op->buf_unmap(ctx, req);
+
+	ctx->req_op->callback(ctx, req);
 }
 
 static int sec_bd_send(struct sec_ctx *ctx, struct sec_req *req)
@@ -545,9 +549,7 @@ static void sec_skcipher_copy_iv(struct sec_ctx *ctx, struct sec_req *req)
 {
 	struct skcipher_request *sk_req = req->c_req.sk_req;
 	u8 *c_ivin = req->qp_ctx->res[req->req_id].c_ivin;
-	struct sec_cipher_req *c_req = &req->c_req;
 
-	c_req->c_len = sk_req->cryptlen;
 	memcpy(c_ivin, sk_req->iv, ctx->c_ctx.ivsize);
 }
 
@@ -728,17 +730,17 @@ static void sec_skcipher_ctx_exit(struct crypto_skcipher *tfm)
 	sec_skcipher_uninit(tfm);
 }
 
-static int sec_skcipher_param_check(struct sec_ctx *ctx,
-				    struct skcipher_request *sk_req)
+static int sec_skcipher_param_check(struct sec_ctx *ctx, struct sec_req *sreq)
 {
-	u8 c_alg = ctx->c_ctx.c_alg;
+	struct skcipher_request *sk_req = sreq->c_req.sk_req;
 	struct device *dev = SEC_CTX_DEV(ctx);
+	u8 c_alg = ctx->c_ctx.c_alg;
 
 	if (!sk_req->src || !sk_req->dst) {
 		dev_err(dev, "skcipher input param error!\n");
 		return -EINVAL;
 	}
-
+	sreq->c_req.c_len = sk_req->cryptlen;
 	if (c_alg == SEC_CALG_3DES) {
 		if (sk_req->cryptlen & (DES3_EDE_BLOCK_SIZE - 1)) {
 			dev_err(dev, "skcipher 3des input length error!\n");
@@ -767,14 +769,14 @@ static int sec_skcipher_crypto(struct skcipher_request *sk_req, bool encrypt)
 	if (!sk_req->cryptlen)
 		return 0;
 
-	ret = sec_skcipher_param_check(ctx, sk_req);
-	if (ret)
-		return ret;
-
 	req->c_req.sk_req = sk_req;
 	req->c_req.encrypt = encrypt;
 	req->ctx = ctx;
 
+	ret = sec_skcipher_param_check(ctx, req);
+	if (unlikely(ret))
+		return -EINVAL;
+
 	return ctx->req_op->process(ctx, req);
 }