linux-kernel - [PATCH -next] drm/rockchip: cdn-dp: Mark cdn_dp_resume as __maybe

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Date:   Wed, 10 Feb 2021 07:55:24 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Hulk Robot <hulkci@...wei.com>, Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC:     Wei Yongjun <weiyongjun1@...wei.com>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-rockchip@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] drm/rockchip: cdn-dp: Mark cdn_dp_resume as __maybe_unused

The function cdn_dp_resume() may have no callers depending
on configuration, so it must be marked __maybe_unused to
avoid harmless warning:

drivers/gpu/drm/rockchip/cdn-dp-core.c:1124:12: warning:
 'cdn_dp_resume' defined but not used [-Wunused-function]
 1124 | static int cdn_dp_resume(struct device *dev)
      |            ^~~~~~~~~~~~~

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index a4a45daf93f2..1162e321aaed 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1121,7 +1121,7 @@ static int cdn_dp_suspend(struct device *dev)
 	return ret;
 }
 
-static int cdn_dp_resume(struct device *dev)
+static int __maybe_unused cdn_dp_resume(struct device *dev)
 {
 	struct cdn_dp_device *dp = dev_get_drvdata(dev);