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drm/exynos: iommu: improve a check for non-iommu dma_ops

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DRM Exynos driver is relying on dma-mapping internal structures when used
with IOMMU enabled. This patch partially hides dma-mapping internal things
by using proper get_dma_ops/set_dma_ops calls.

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 2015-06-03 10:26:24 +02:00 committed by Inki Dae
parent 452868581d
commit bcfe4e25aa
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/exynos/exynos_drm_iommu.c
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@ -117,8 +117,8 @@ int drm_iommu_attach_device(struct drm_device *drm_dev,
* If iommu attach succeeded, the sub driver would have dma_ops
* for iommu and also all sub drivers have same dma_ops.
*/
if (!dev->archdata.dma_ops)
dev->archdata.dma_ops = subdrv_dev->archdata.dma_ops;
if (get_dma_ops(dev) == get_dma_ops(NULL))
set_dma_ops(dev, get_dma_ops(subdrv_dev));
return 0;
}