linux-kernel - [tip: objtool/core] x86/unwind/orc: Remove redundant initialization of 'mid' pointer in __orc

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Date:   Thu, 21 Sep 2023 06:49:23 -0000
From:   "tip-bot2 for Colin Ian King" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Colin Ian King <colin.i.king@...il.com>,
        Ingo Molnar <mingo@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: objtool/core] x86/unwind/orc: Remove redundant initialization
 of 'mid' pointer in __orc_find()

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     fef44ebaf61b57a71ab818058926a3f9a0ac81e6
Gitweb:        https://git.kernel.org/tip/fef44ebaf61b57a71ab818058926a3f9a0ac81e6
Author:        Colin Ian King <colin.i.king@...il.com>
AuthorDate:    Wed, 20 Sep 2023 12:41:41 +01:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Thu, 21 Sep 2023 08:41:23 +02:00

x86/unwind/orc: Remove redundant initialization of 'mid' pointer in __orc_find()

The 'mid' pointer 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>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Link: https://lore.kernel.org/r/20230920114141.118919-1-colin.i.king@gmail.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 7e574cf..d00c28a 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;