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drm/exynos: mixer: Fix enabling of the runtime power management 

Runtime power management is essential for the Exynos Mixer driver
operation. It should be enabled before adding its DRM component, because
in some cases (when deferred probe takes place due to the IOMMU
availability) the DRM driver might be initialized directly from the
Mixer's component_add() call, what results in starting the driver
operation without enabling the runtime power management.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Marek Szyprowski 2020-05-14 12:08:12 +02:00 committed by Inki Dae
parent a046e7bf4e
commit fda022143f
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/exynos/exynos_mixer.c
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@ -1244,9 +1244,11 @@ static int mixer_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ctx);
pm_runtime_enable(dev);
ret = component_add(&pdev->dev, &mixer_component_ops);
if (!ret)
pm_runtime_enable(dev);
if (ret)
pm_runtime_disable(dev);
return ret;
}