linux-kernel - [PATCH] x86/mce/therm_throt: mark throttle_active_work as __maybe

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Date:   Tue, 10 Dec 2019 21:39:13 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Tony Luck <tony.luck@...el.com>, Borislav Petkov <bp@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     Arnd Bergmann <arnd@...db.de>, "H. Peter Anvin" <hpa@...or.com>,
        bberg@...hat.com, ckellner@...hat.com, hdegoede@...hat.com,
        linux-edac <linux-edac@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] x86/mce/therm_throt: mark throttle_active_work as __maybe_unused

throttle_active_work() is only called if CONFIG_SYSFS is set,
otherwise we get a harmless warning:

arch/x86/kernel/cpu/mce/therm_throt.c:238:13: error: 'throttle_active_work' defined but not used [-Werror=unused-function]

Mark the function as __maybe_unused to avoid the warning.

Fixes: f6656208f04e ("x86/mce/therm_throt: Optimize notifications of thermal throttle")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/x86/kernel/cpu/mce/therm_throt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mce/therm_throt.c b/arch/x86/kernel/cpu/mce/therm_throt.c
index b38010b541d6..8963493a1e9e 100644
--- a/arch/x86/kernel/cpu/mce/therm_throt.c
+++ b/arch/x86/kernel/cpu/mce/therm_throt.c
@@ -235,7 +235,7 @@ static void get_therm_status(int level, bool *proc_hot, u8 *temp)
 	*temp = (msr_val >> 16) & 0x7F;
 }
 
-static void throttle_active_work(struct work_struct *work)
+static void __maybe_unused throttle_active_work(struct work_struct *work)
 {
 	struct _thermal_state *state = container_of(to_delayed_work(work),
 						struct _thermal_state, therm_work);
-- 
2.20.0