[PATCH -next] drm/rockchip: cdn-dp-core: fix function not used when not PM_SLEEP

[PATCH -next] drm/rockchip: cdn-dp-core: fix function not used when not PM_SLEEP

[Randy Dunlap]

Fix build warning when CONFIG_PM_SLEEP is not enabled.

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

Fixes: 7c49abb4c2f8 ("drm/rockchip: cdn-dp-core: Make cdn_dp_core_suspend/resume static")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: Heiko Stübner <heiko@sntech.de>
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
---
 drivers/gpu/drm/rockchip/cdn-dp-core.c |    2 ++
 1 file changed, 2 insertions(+)

--- linux-next-20201210.orig/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ linux-next-20201210/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1121,6 +1121,7 @@ static int cdn_dp_suspend(struct device
 	return ret;
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int cdn_dp_resume(struct device *dev)
 {
 	struct cdn_dp_device *dp = dev_get_drvdata(dev);
@@ -1133,6 +1134,7 @@ static int cdn_dp_resume(struct device *
 
 	return 0;
 }
+#endif
 
 static int cdn_dp_probe(struct platform_device *pdev)
 {
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