linux-kernel - [PATCH 4.9 041/111] platform/x86: toshiba_acpi: Fix defined but not used build warnings

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Message-Id: <20180924113108.968250211@linuxfoundation.org>
Date:   Mon, 24 Sep 2018 13:52:08 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Randy Dunlap <rdunlap@...radead.org>,
        Azael Avalos <coproscefalo@...il.com>,
        platform-driver-x86@...r.kernel.org,
        Andy Shevchenko <andy@...radead.org>,
        "Darren Hart (VMware)" <dvhart@...radead.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 041/111] platform/x86: toshiba_acpi: Fix defined but not used build warnings

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Randy Dunlap <rdunlap@...radead.org>

[ Upstream commit c2e2a618eb7104e18fdcf739d4d911563812a81c ]

Fix a build warning in toshiba_acpi.c when CONFIG_PROC_FS is not enabled
by marking the unused function as __maybe_unused.

../drivers/platform/x86/toshiba_acpi.c:1685:12: warning: 'version_proc_show' defined but not used [-Wunused-function]

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Azael Avalos <coproscefalo@...il.com>
Cc: platform-driver-x86@...r.kernel.org
Cc: Andy Shevchenko <andy@...radead.org>
Signed-off-by: Darren Hart (VMware) <dvhart@...radead.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/platform/x86/toshiba_acpi.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -34,6 +34,7 @@
 #define TOSHIBA_ACPI_VERSION	"0.24"
 #define PROC_INTERFACE_VERSION	1
 
+#include <linux/compiler.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
@@ -1687,7 +1688,7 @@ static const struct file_operations keys
 	.write		= keys_proc_write,
 };
 
-static int version_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused version_proc_show(struct seq_file *m, void *v)
 {
 	seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
 	seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);