linux-kernel - [PATCH][next] x86/unwind/orc: remove redundant initialization of pointer mid

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Message-Id: <20230920114141.118919-1-colin.i.king@gmail.com>
Date:   Wed, 20 Sep 2023 12:41:41 +0100
From:   Colin Ian King <colin.i.king@...il.com>
To:     Josh Poimboeuf <jpoimboe@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] x86/unwind/orc: remove redundant initialization of pointer mid

The pointer mid is being initialized with a value that is never read,
it is being re-assigned and used inside a for-loop. Remove the
redundant initialization. Cleans up clang scan build warning:

arch/x86/kernel/unwind_orc.c:88:7: warning: Value stored to 'mid'
during its initialization is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 arch/x86/kernel/unwind_orc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c
index 7e574cf3bf8a..d00c28aaa5be 100644
--- a/arch/x86/kernel/unwind_orc.c
+++ b/arch/x86/kernel/unwind_orc.c
@@ -85,7 +85,7 @@ static struct orc_entry *__orc_find(int *ip_table, struct orc_entry *u_table,
 {
 	int *first = ip_table;
 	int *last = ip_table + num_entries - 1;
-	int *mid = first, *found = first;
+	int *mid, *found = first;
 
 	if (!num_entries)
 		return NULL;
-- 
2.39.2