linux-kernel - [PATCH AUTOSEL 4.19 24/29] riscv: remove unused variable in ftrace

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Message-Id: <20190829105009.2265-24-sashal@kernel.org>
Date:   Thu, 29 Aug 2019 06:50:04 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     David Abdurachmanov <david.abdurachmanov@...il.com>,
        Olof Johansson <olof@...om.net>,
        Steven Rostedt <rostedt@...dmis.org>,
        Palmer Dabbelt <palmer@...ive.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.19 24/29] riscv: remove unused variable in ftrace

From: David Abdurachmanov <david.abdurachmanov@...il.com>

[ Upstream commit 397182e0db56b8894a43631ce72de14d90a29834 ]

Noticed while building kernel-4.20.0-0.rc5.git2.1.fc30 for
Fedora 30/RISCV.

[..]
BUILDSTDERR: arch/riscv/kernel/ftrace.c: In function 'prepare_ftrace_return':
BUILDSTDERR: arch/riscv/kernel/ftrace.c:135:6: warning: unused variable 'err' [-Wunused-variable]
BUILDSTDERR:   int err;
BUILDSTDERR:       ^~~
[..]

Signed-off-by: David Abdurachmanov <david.abdurachmanov@...il.com>
Fixes: e949b6db51dc1 ("riscv/function_graph: Simplify with function_graph_enter()")
Reviewed-by: Olof Johansson <olof@...om.net>
Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Palmer Dabbelt <palmer@...ive.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/riscv/kernel/ftrace.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/riscv/kernel/ftrace.c b/arch/riscv/kernel/ftrace.c
index c433f6d3dd64f..a840b7d074f7d 100644
--- a/arch/riscv/kernel/ftrace.c
+++ b/arch/riscv/kernel/ftrace.c
@@ -132,7 +132,6 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
 {
 	unsigned long return_hooker = (unsigned long)&return_to_handler;
 	unsigned long old;
-	int err;
 
 	if (unlikely(atomic_read(&current->tracing_graph_pause)))
 		return;
-- 
2.20.1