linux-kernel - [PATCH] loongarch/crypto: Clean up useless assignment operations

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Date: Mon, 26 Feb 2024 16:03:28 +0800
From: WangYuli <wangyuli@...ontech.com>
To: herbert@...dor.apana.org.au,
	davem@...emloft.net,
	chenhuacai@...nel.org,
	kernel@...0n.name
Cc: linux-crypto@...r.kernel.org,
	loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	WangYuli <wangyuli@...ontech.com>,
	Guan Wentao <guanwentao@...ontech.com>
Subject: [PATCH] loongarch/crypto: Clean up useless assignment operations

Both crc32 and crc32c hw accelerated funcs will calculate the
remaining len. Those codes are derived from
arch/mips/crypto/crc32-mips.c and "len -= sizeof(u32)" is not
necessary for 64-bit CPUs.

Removing it can make context code style more unified and improve
code readability.

Suggested-by: Guan Wentao <guanwentao@...ontech.com>
Signed-off-by: WangYuli <wangyuli@...ontech.com>
---
 arch/loongarch/crypto/crc32-loongarch.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/loongarch/crypto/crc32-loongarch.c b/arch/loongarch/crypto/crc32-loongarch.c
index a49e507af38c..3eebea3a7b47 100644
--- a/arch/loongarch/crypto/crc32-loongarch.c
+++ b/arch/loongarch/crypto/crc32-loongarch.c
@@ -44,7 +44,6 @@ static u32 crc32_loongarch_hw(u32 crc_, const u8 *p, unsigned int len)
 
 		CRC32(crc, value, w);
 		p += sizeof(u32);
-		len -= sizeof(u32);
 	}
 
 	if (len & sizeof(u16)) {
@@ -80,7 +79,6 @@ static u32 crc32c_loongarch_hw(u32 crc_, const u8 *p, unsigned int len)
 
 		CRC32C(crc, value, w);
 		p += sizeof(u32);
-		len -= sizeof(u32);
 	}
 
 	if (len & sizeof(u16)) {
-- 
2.33.1