From 7e1751001818209b214b8c3df0b3c91fae250ea2 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 21 Jul 2017 22:47:18 +0200
Subject: [PATCH] drm: exynos: mark pm functions as __maybe_unused
Git-commit: 7e1751001818209b214b8c3df0b3c91fae250ea2
Patch-mainline: v4.13-rc3
References: bsc#1051510
The rework of the exynos DRM clock handling introduced
warnings for configurations that have CONFIG_PM disabled:
drivers/gpu/drm/exynos/exynos_hdmi.c:736:13: error: 'hdmi_clk_disable_gates' defined but not used [-Werror=unused-function]
static void hdmi_clk_disable_gates(struct hdmi_context *hdata)
^~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/exynos/exynos_hdmi.c:717:12: error: 'hdmi_clk_enable_gates' defined but not used [-Werror=unused-function]
static int hdmi_clk_enable_gates(struct hdmi_context *hdata)
The problem is that the PM functions themselves are inside of
an #ifdef, but some functions they call are not.
This patch removes the #ifdef and instead marks the PM functions
as __maybe_unused, which is a more reliable way to get it right.
Link: https://patchwork.kernel.org/patch/8436281/
Fixes: 9be7e9898444 ("drm/exynos/hdmi: clock code re-factoring")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1932,8 +1932,7 @@ static int hdmi_remove(struct platform_d
return 0;
}
-#ifdef CONFIG_PM
-static int exynos_hdmi_suspend(struct device *dev)
+static int __maybe_unused exynos_hdmi_suspend(struct device *dev)
{
struct hdmi_context *hdata = dev_get_drvdata(dev);
@@ -1942,7 +1941,7 @@ static int exynos_hdmi_suspend(struct de
return 0;
}
-static int exynos_hdmi_resume(struct device *dev)
+static int __maybe_unused exynos_hdmi_resume(struct device *dev)
{
struct hdmi_context *hdata = dev_get_drvdata(dev);
int ret;
@@ -1953,7 +1952,6 @@ static int exynos_hdmi_resume(struct dev
return 0;
}
-#endif
static const struct dev_pm_ops exynos_hdmi_pm_ops = {
SET_RUNTIME_PM_OPS(exynos_hdmi_suspend, exynos_hdmi_resume, NULL)