Received-SPF: pass (google.com: best guess record for domain of linux-crypto-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Tian Tao <tiantao6@huawei.com>
To:     <gilad@benyossef.com>, <herbert@gondor.apana.org.au>,
        <davem@davemloft.net>, <linux-crypto@vger.kernel.org>
CC:     <linuxarm@huawei.com>
Subject: [PATCH v2] crypto: fix comparison of unsigned expression warning
Date:   Sat, 19 Oct 2019 08:41:37 +0800
Message-ID: <1571445697-33824-1-git-send-email-tiantao6@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-crypto-owner@vger.kernel.org
Precedence: bulk

This patch fixes the following warnings:
drivers/crypto/ccree/cc_aead.c:630:5-12: WARNING: Unsigned expression
compared with zero: seq_len > 0

Signed-off-by: Tian Tao <tiantao6@huawei.com>

v2:
change hmac_setkey() return type to unsigned int to fix the warning.
---
 drivers/crypto/ccree/cc_aead.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index d3e8faa..64d318d 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -293,7 +293,8 @@ static unsigned int xcbc_setkey(struct cc_hw_desc *desc,
 	return 4;
 }
 
-static int hmac_setkey(struct cc_hw_desc *desc, struct cc_aead_ctx *ctx)
+static unsigned int hmac_setkey(struct cc_hw_desc *desc,
+				struct cc_aead_ctx *ctx)
 {
 	unsigned int hmac_pad_const[2] = { HMAC_IPAD_CONST, HMAC_OPAD_CONST };
 	unsigned int digest_ofs = 0;
-- 
2.7.4