linux-kernel - [PATCH] crypto: arm64/aes-neonbs - remove redundant code in __xts

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Date:   Tue, 22 Oct 2019 14:42:11 +0800
From:   Yunfeng Ye <yeyunfeng@...wei.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <catalin.marinas@....com>, <will@...nel.org>
CC:     <linux-crypto@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        "hushiyuan@...wei.com" <hushiyuan@...wei.com>,
        "linfeilong@...wei.com" <linfeilong@...wei.com>
Subject: [PATCH] crypto: arm64/aes-neonbs - remove redundant code in
 __xts_crypt()

A warning is found by the static code analysis tool:
  "Identical condition 'err', second condition is always false"

Fix this by removing the redundant condition @err.

Signed-off-by: Yunfeng Ye <yeyunfeng@...wei.com>
---
 arch/arm64/crypto/aes-neonbs-glue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/crypto/aes-neonbs-glue.c b/arch/arm64/crypto/aes-neonbs-glue.c
index ea873b8904c4..7b342db428b0 100644
--- a/arch/arm64/crypto/aes-neonbs-glue.c
+++ b/arch/arm64/crypto/aes-neonbs-glue.c
@@ -387,7 +387,7 @@ static int __xts_crypt(struct skcipher_request *req, bool encrypt,
 		skcipher_walk_done(&walk, nbytes);
 	}

-	if (err || likely(!tail))
+	if (likely(!tail))
 		return err;

 	/* handle ciphertext stealing */
-- 
2.7.4.3