linux-kernel - [PATCH] platform/surface: mark PM functions as __maybe

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Date:   Sun,  3 Jan 2021 15:04:21 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Maximilian Luz <luzmaximilian@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>
Cc:     Arnd Bergmann <arnd@...db.de>, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] platform/surface: mark PM functions as __maybe_unused

From: Arnd Bergmann <arnd@...db.de>

When CONFIG_PM is disabled, the compiler produces harmless warnings:

drivers/platform/surface/surface_gpe.c:184:12: error: unused function 'surface_gpe_suspend' [-Werror,-Wunused-function]
static int surface_gpe_suspend(struct device *dev)
drivers/platform/surface/surface_gpe.c:189:12: error: unused function 'surface_gpe_resume' [-Werror,-Wunused-function]
static int surface_gpe_resume(struct device *dev)

Mark these as __maybe_unused to shut up the warning.

Fixes: 274335f1c557 ("platform/surface: Add Driver to set up lid GPEs on MS Surface device")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/platform/surface/surface_gpe.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/surface/surface_gpe.c b/drivers/platform/surface/surface_gpe.c
index e49e5d6d5d4e..86f6991b1215 100644
--- a/drivers/platform/surface/surface_gpe.c
+++ b/drivers/platform/surface/surface_gpe.c
@@ -181,12 +181,12 @@ static int surface_lid_enable_wakeup(struct device *dev, bool enable)
 	return 0;
 }
 
-static int surface_gpe_suspend(struct device *dev)
+static int __maybe_unused surface_gpe_suspend(struct device *dev)
 {
 	return surface_lid_enable_wakeup(dev, true);
 }
 
-static int surface_gpe_resume(struct device *dev)
+static int __maybe_unused surface_gpe_resume(struct device *dev)
 {
 	return surface_lid_enable_wakeup(dev, false);
 }
-- 
2.29.2