linux-kernel - FAILED: Patch "LoongArch/crypto: Clean up useless assignment operations" failed to apply to 4.19-stable tree

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Message-ID: <20240327122508.2839963-1-sashal@kernel.org>
Date: Wed, 27 Mar 2024 08:25:07 -0400
From: Sasha Levin <sashal@...nel.org>
To: stable@...r.kernel.org,
	wangyuli@...ontech.com
Cc: WANG Xuerui <git@...0n.name>,
	Wentao Guan <guanwentao@...ontech.com>,
	Huacai Chen <chenhuacai@...ngson.cn>,
	linux-crypto@...r.kernel.org,
	loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: FAILED: Patch "LoongArch/crypto: Clean up useless assignment operations" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@...r.kernel.org>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

>From fea1c949f6ca5059e12de00d0483645debc5b206 Mon Sep 17 00:00:00 2001
From: Yuli Wang <wangyuli@...ontech.com>
Date: Tue, 19 Mar 2024 15:50:34 +0800
Subject: [PATCH] LoongArch/crypto: Clean up useless assignment operations

The LoongArch CRC32 hw acceleration is based on arch/mips/crypto/
crc32-mips.c. While the MIPS code supports both MIPS32 and MIPS64,
but LoongArch32 lacks the CRC instruction. As a result, the line
"len -= sizeof(u32)" is unnecessary.

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

Cc: stable@...r.kernel.org
Reviewed-by: WANG Xuerui <git@...0n.name>
Suggested-by: Wentao Guan <guanwentao@...ontech.com>
Signed-off-by: Yuli Wang <wangyuli@...ontech.com>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 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 a49e507af38c0..3eebea3a7b478 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)) {
-- 
2.43.0