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drm: exynos: make PM functions as __maybe_unused 

The newly added runtime-pm support for exynos-drm encloses the
pm functions in an #ifdef, but not the functions that are called
from them and nowhere else, which produces warnings:

drm/exynos/exynos_drm_dsi.c:733:13: warning: 'exynos_dsi_disable_clock' defined but not used [-Wunused-function]
 static void exynos_dsi_disable_clock(struct exynos_dsi *dsi)
             ^
drm/exynos/exynos_drm_dsi.c:1291:13: warning: 'exynos_dsi_disable_irq' defined but not used [-Wunused-function]
 static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)
             ^

This removes the #ifdef and instead marks the functions as
__maybe_unused, so gcc can silently discard them and all called
functions when CONFIG_PM is disabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Arnd Bergmann 2016-01-20 11:33:37 +01:00 committed by Inki Dae
parent e0fea7e7b6
commit 010848a73f
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/exynos/exynos_drm_dsi.c
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@ -1906,8 +1906,7 @@ static int exynos_dsi_remove(struct platform_device *pdev)
return 0; return 0;
} }
#ifdef CONFIG_PM static int __maybe_unused exynos_dsi_suspend(struct device *dev)
static int exynos_dsi_suspend(struct device *dev)
{ {
struct drm_encoder *encoder = dev_get_drvdata(dev); struct drm_encoder *encoder = dev_get_drvdata(dev);
struct exynos_dsi *dsi = encoder_to_dsi(encoder); struct exynos_dsi *dsi = encoder_to_dsi(encoder);
@ -1938,7 +1937,7 @@ static int exynos_dsi_suspend(struct device *dev)
return 0; return 0;
} }
static int exynos_dsi_resume(struct device *dev) static int __maybe_unused exynos_dsi_resume(struct device *dev)
{ {
struct drm_encoder *encoder = dev_get_drvdata(dev); struct drm_encoder *encoder = dev_get_drvdata(dev);
struct exynos_dsi *dsi = encoder_to_dsi(encoder); struct exynos_dsi *dsi = encoder_to_dsi(encoder);
@ -1972,7 +1971,6 @@ err_clk:
return ret; return ret;
} }
#endif
static const struct dev_pm_ops exynos_dsi_pm_ops = { static const struct dev_pm_ops exynos_dsi_pm_ops = {
SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL) SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL)