From: Arnd Bergmann <arnd@arndb.de>
To: Xinliang Liu <z.liuxinliang@hisilicon.com>,
        Rongrong Zou <zourongrong@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
        Xinwei Kong <kong.kongxinwei@hisilicon.com>,
        Chen Feng <puck.chen@hisilicon.com>, David Airlie <airlied@linux.ie>,
        Sean Paul <seanpaul@chromium.org>, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH] drm/hisilicon/hibmc: mark PM functions __maybe_unused
Date: Thu, 24 Nov 2016 17:30:26 +0100
Message-Id: <20161124163107.3914495-1-arnd@arndb.de>
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Sender: linux-kernel-owner@vger.kernel.org
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When CONFIG_PM_SLEEP is disabled, we get a harmless warning

drm/hisilicon/hibmc/hibmc_drm_drv.c:115:12: error: ‘hibmc_pm_resume’ defined but not used [-Werror=unused-function]
drm/hisilicon/hibmc/hibmc_drm_drv.c:97:12: error: ‘hibmc_pm_suspend’ defined but not used [-Werror=unused-function]

Marking the functions as __maybe_unused avoids the warning without
having to add an #ifdef.

Fixes: 5e0df3a08f3d ("drm/hisilicon/hibmc: Add hisilicon hibmc drm master driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 73ba8b05f1da..fd949df46717 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -94,7 +94,7 @@ static struct drm_driver hibmc_driver = {
 	.irq_handler		= hibmc_drm_interrupt,
 };
 
-static int hibmc_pm_suspend(struct device *dev)
+static int __maybe_unused hibmc_pm_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
@@ -112,7 +112,7 @@ static int hibmc_pm_suspend(struct device *dev)
 	return 0;
 }
 
-static int hibmc_pm_resume(struct device *dev)
+static int  __maybe_unused hibmc_pm_resume(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
-- 
2.9.0