From: Krzysztof Kozlowski <krzk@kernel.org>
To: Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Krzysztof Kozlowski <krzk@kernel.org>,
Vladimir Zapolskiy <vz@mleia.com>,
Kamil Konieczny <k.konieczny@partner.samsung.com>,
Tero Kristo <t-kristo@ti.com>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-samsung-soc@vger.kernel.org
Subject: [PATCH 3/4] crypto: s5p-sss: Remove useless check for non-null request
Date: Thu, 1 Mar 2018 21:50:12 +0100 [thread overview]
Message-ID: <1519937413-24468-3-git-send-email-krzk@kernel.org> (raw)
In-Reply-To: <1519937413-24468-1-git-send-email-krzk@kernel.org>
ahash_request 'req' argument passed by the caller
s5p_hash_handle_queue() cannot be NULL here because it is obtained from
non-NULL pointer via container_of().
This fixes smatch warning:
drivers/crypto/s5p-sss.c:1213 s5p_hash_prepare_request() warn: variable dereferenced before check 'req' (see line 1208)
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
drivers/crypto/s5p-sss.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index 5d64c08b7f47..d7c8163e5068 100644
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -1210,9 +1210,6 @@ static int s5p_hash_prepare_request(struct ahash_request *req, bool update)
int xmit_len, hash_later, nbytes;
int ret;
- if (!req)
- return 0;
-
if (update)
nbytes = req->nbytes;
else
--
2.7.4
next prev parent reply other threads:[~2018-03-01 20:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-01 20:50 [PATCH 1/4] crypto: omap-sham: Remove useless check for non-null request Krzysztof Kozlowski
2018-03-01 20:50 ` [PATCH 2/4] crypto: omap-sham - Fix misleading indentation Krzysztof Kozlowski
2018-03-05 8:59 ` Tero Kristo
2018-03-01 20:50 ` Krzysztof Kozlowski [this message]
2018-03-01 20:50 ` [PATCH 4/4] crypto: s5p-sss - Constify pointed data (arguments and local variables) Krzysztof Kozlowski
2018-03-05 8:58 ` [PATCH 1/4] crypto: omap-sham: Remove useless check for non-null request Tero Kristo
2018-03-09 15:19 ` Herbert Xu
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