The exynos drm driver implements power management functions that
are hidden inside of #ifdef, but when they are all disabled,
we get a warning about another unused function that is not
called from elsewhere:
drivers/gpu/drm/exynos/exynos_drm_gsc.c:1219:12: error: 'gsc_clk_ctrl' defined but not used [-Werror=unused-function]
This removes the #ifdef and instead uses a __maybe_unused annotation
that avoids the problem because now gcc can see how the function is
(not) used and silently drop it.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_gsc.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index 5d20da8f957e..b0a773790f85 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/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_SLEEP
-static int gsc_suspend(struct device *dev)
+static int __maybe_unused gsc_suspend(struct device *dev)
{
struct gsc_context *ctx = get_gsc_context(dev);
@@ -1773,7 +1772,7 @@ static int gsc_suspend(struct device *dev)
return gsc_clk_ctrl(ctx, false);
}
-static int gsc_resume(struct device *dev)
+static int __maybe_unused gsc_resume(struct device *dev)
{
struct gsc_context *ctx = get_gsc_context(dev);
@@ -1784,10 +1783,8 @@ static int gsc_resume(struct device *dev)
return 0;
}
-#endif
-#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);
@@ -1796,7 +1793,7 @@ 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);
@@ -1804,7 +1801,6 @@ static int gsc_runtime_resume(struct device *dev)
return gsc_clk_ctrl(ctx, true);
}
-#endif
static const struct dev_pm_ops gsc_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(gsc_suspend, gsc_resume)
--
2.7.0
--
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