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[PATCH] drm/exynos: fix building without CONFIG_PM_SLEEP

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  [PATCH] drm/exynos: fix building without CONFIG_PM_SLEEP Arnd Bergmann <arnd@arndb.de> - 2015-11-17 16:10 +0100
    [PATCH] drm/exynos: remove unused variables Arnd Bergmann <arnd@arndb.de> - 2015-11-17 16:50 +0100

#1271300 — [PATCH] drm/exynos: fix building without CONFIG_PM_SLEEP

The runtime PM operations use the suspend/resume functions
even when CONFIG_PM_SLEEP is not set, but this now fails
for the exynos DRM driver:

exynos_mixer.c:1289:61: error: 'exynos_mixer_resume' undeclared here (not in a function)
  SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)

This removes the #ifdef and instead marks the functions as
__maybe_unused, which does the right thing in all cases and
also looks nicer.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 	 ("drm/exynos: add pm_runtime to Mixer")

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 7498c6e76a53..fcaf71df77c1 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1230,8 +1230,7 @@ static int mixer_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int exynos_mixer_suspend(struct device *dev)
+static int __maybe_unused exynos_mixer_suspend(struct device *dev)
 {
 	struct mixer_context *ctx = dev_get_drvdata(dev);
 	struct mixer_resources *res = &ctx->mixer_res;
@@ -1247,7 +1246,7 @@ static int exynos_mixer_suspend(struct device *dev)
 	return 0;
 }
 
-static int exynos_mixer_resume(struct device *dev)
+static int __maybe_unused exynos_mixer_resume(struct device *dev)
 {
 	struct mixer_context *ctx = dev_get_drvdata(dev);
 	struct mixer_resources *res = &ctx->mixer_res;
@@ -1283,7 +1282,6 @@ static int exynos_mixer_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops exynos_mixer_pm_ops = {
 	SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)

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#1271347 — [PATCH] drm/exynos: remove unused variables

After a recent change, two variables were left unused:

exynos/exynos5433_drm_decon.c: In function 'decon_enable':
exynos/exynos5433_drm_decon.c:381:6: warning: unused variable 'i' [-Wunused-variable]
exynos/exynos5433_drm_decon.c:380:6: warning: unused variable 'ret' [-Wunused-variable]

This removes them too.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 186ba87a6e31 ("drm/exynos: add pm_runtime to DECON 5433")

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index edfd6e390ef7..2ac1d4d14368 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -377,8 +377,6 @@ static void decon_swreset(struct decon_context *ctx)
 static void decon_enable(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
-	int ret;
-	int i;
 
 	if (!test_and_clear_bit(BIT_SUSPENDED, &ctx->flags))
 		return;

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