linux-kernel - [PATCH AUTOSEL 6.0 26/39] LoongArch: Fix unsigned comparison with less than zero

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Message-Id: <20221128173642.1441232-26-sashal@kernel.org>
Date:   Mon, 28 Nov 2022 12:36:06 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     KaiLong Wang <wangkailong@...i.cn>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        Sasha Levin <sashal@...nel.org>, chenhuacai@...nel.org,
        zhangqing@...ngson.cn, loongarch@...ts.linux.dev
Subject: [PATCH AUTOSEL 6.0 26/39] LoongArch: Fix unsigned comparison with less than zero

From: KaiLong Wang <wangkailong@...i.cn>

[ Upstream commit b96e74bb439f096168c78ba3ba1599e0b85cfd73 ]

Eliminate the following coccicheck warning:

./arch/loongarch/kernel/unwind_prologue.c:84:5-13: WARNING: Unsigned
expression compared with zero: frame_ra < 0

Signed-off-by: KaiLong Wang <wangkailong@...i.cn>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/loongarch/kernel/unwind_prologue.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/loongarch/kernel/unwind_prologue.c b/arch/loongarch/kernel/unwind_prologue.c
index b206d9159205..4571c3c87cd4 100644
--- a/arch/loongarch/kernel/unwind_prologue.c
+++ b/arch/loongarch/kernel/unwind_prologue.c
@@ -43,7 +43,8 @@ static bool unwind_by_prologue(struct unwind_state *state)
 {
 	struct stack_info *info = &state->stack_info;
 	union loongarch_instruction *ip, *ip_end;
-	unsigned long frame_size = 0, frame_ra = -1;
+	long frame_ra = -1;
+	unsigned long frame_size = 0;
 	unsigned long size, offset, pc = state->pc;
 
 	if (state->sp >= info->end || state->sp < info->begin)
-- 
2.35.1