Subject: [PATCH, RESEND] drm: exynos: avoid unused function warning

When CONFIG_PM is not set, we get a warning about an unused function:

drivers/gpu/drm/exynos/exynos_drm_gsc.c:1219:12: error: 'gsc_clk_ctrl' defined but not used [-Werror=unused-function]
 static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable)
            ^~~~~~~~~~~~

This removes the two #ifdef checks in this file and instead marks the
functions as __maybe_unused, which is a more reliable way of doing the
same, allowing better build coverage and avoiding the warning above.

Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Inki Dae <[email protected]>

Author: arndb

drivers/gpu/drm/exynos/exynos_drm_gsc.c

@@ -1760,8 +1760,7 @@ static int gsc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int gsc_runtime_suspend(struct device *dev)
+static int __maybe_unused gsc_runtime_suspend(struct device *dev)
 {
 	struct gsc_context *ctx = get_gsc_context(dev);
 
@@ -1770,15 +1769,14 @@ static int gsc_runtime_suspend(struct device *dev)
 	return  gsc_clk_ctrl(ctx, false);
 }
 
-static int gsc_runtime_resume(struct device *dev)
+static int __maybe_unused gsc_runtime_resume(struct device *dev)
 {
 	struct gsc_context *ctx = get_gsc_context(dev);
 
 	DRM_DEBUG_KMS("id[%d]\n", ctx->id);
 
 	return  gsc_clk_ctrl(ctx, true);
 }
-#endif
 
 static const struct dev_pm_ops gsc_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,