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drm/exynos: iommu: detach from default dma-mapping domain on init
This patch adds code, which detach sub-device nodes from default iommu domain if such has been configured. This lets Exynos DRM driver to properly attach sub-devices to its own, common for all sub-devices domain. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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@ -100,6 +100,9 @@ int drm_iommu_attach_device(struct drm_device *drm_dev,
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dma_set_max_seg_size(subdrv_dev, 0xffffffffu);
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if (subdrv_dev->archdata.mapping)
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arm_iommu_detach_device(subdrv_dev);
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ret = arm_iommu_attach_device(subdrv_dev, dev->archdata.mapping);
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if (ret < 0) {
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DRM_DEBUG_KMS("failed iommu attach.\n");
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