lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Thu,  9 Nov 2017 08:54:13 +0000
From:   Colin King <colin.king@...onical.com>
To:     Harsh Jain <harsh@...lsio.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] crypto: chelsio: remove redundant assignments to reqctx and dst_size

From: Colin Ian King <colin.king@...onical.com>

Pointer reqctx is assigned the same value twice, once on initialization
and again a few statements later, remove the second redundant assignment.
Variable dst_size is assigned but it is never read, so the variable is
redundant and can be removed. Cleans up clang warnings:

drivers/crypto/chelsio/chcr_algo.c:156:29: warning: Value stored to
'reqctx' during its initialization is never read
drivers/crypto/chelsio/chcr_algo.c:2020:2: warning: Value stored to
'dst_size' is never read

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/crypto/chelsio/chcr_algo.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c
index 4eed7171e2ae..300e66fe8a3c 100644
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -160,7 +160,6 @@ static inline void chcr_handle_ahash_resp(struct ahash_request *req,
 
 	if (input == NULL)
 		goto out;
-	reqctx = ahash_request_ctx(req);
 	digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
 	if (reqctx->is_sg_map)
 		chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
@@ -2014,11 +2013,8 @@ static int chcr_aead_common_init(struct aead_request *req,
 	struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
 	struct chcr_aead_reqctx  *reqctx = aead_request_ctx(req);
 	int error = -EINVAL;
-	unsigned int dst_size;
 	unsigned int authsize = crypto_aead_authsize(tfm);
 
-	dst_size = req->assoclen + req->cryptlen + (op_type ?
-					-authsize : authsize);
 	/* validate key size */
 	if (aeadctx->enckey_len == 0)
 		goto err;
-- 
2.14.1

Powered by blists - more mailing lists