The tegra driver can be compiled without CONFIG_PM_SLEEP enabled. In this case the compilation triggers the warning below:

drivers/gpu/drm/tegra/sor.c:3984:12: warning: ‘tegra_sor_resume’ defined but not used [-Wunused-function] 3984 | static int tegra_sor_resume(struct device *dev) | ^~~~~~~~~~~~~~~~ drivers/gpu/drm/tegra/sor.c:3970:12: warning: ‘tegra_sor_suspend’ defined but not used [-Wunused-function] 3970 | static int tegra_sor_suspend(struct device *dev) | ^~~~~~~~~~~~~~~~~

Fix the warning adding __maybe_unused to the PM functions.

Cc: Thierry Reding thierry.reding@gmail.com Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: Jonathan Hunter jonathanh@nvidia.com Signed-off-by: Vincenzo Frascino vincenzo.frascino@arm.com --- drivers/gpu/drm/tegra/sor.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index a68d3b36b972..69b9ebee7486 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -3912,7 +3912,7 @@ static int tegra_sor_remove(struct platform_device *pdev) return 0; }

-static int tegra_sor_runtime_suspend(struct device *dev) +static int __maybe_unused tegra_sor_runtime_suspend(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); int err; @@ -3934,7 +3934,7 @@ static int tegra_sor_runtime_suspend(struct device *dev) return 0; }

-static int tegra_sor_runtime_resume(struct device *dev) +static int __maybe_unused tegra_sor_runtime_resume(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); int err; @@ -3967,7 +3967,7 @@ static int tegra_sor_runtime_resume(struct device *dev) return 0; }

-static int tegra_sor_suspend(struct device *dev) +static int __maybe_unused tegra_sor_suspend(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); int err; @@ -3981,7 +3981,7 @@ static int tegra_sor_suspend(struct device *dev) return 0; }

-static int tegra_sor_resume(struct device *dev) +static int __maybe_unused tegra_sor_resume(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); int err;