diff mbox series

[15/18] drm/nouveau/tegra: Clean up IOMMU workaround

Message ID 21d8d42edb9f91e62f9c72875cf2210afacff18c.1597931876.git.robin.murphy@arm.com (mailing list archive)
State Not Applicable
Headers show
Series Convert arch/arm to use iommu-dma | expand

Commit Message

Robin Murphy Aug. 20, 2020, 3:08 p.m. UTC 
Now that arch/arm is wired up for default domains and iommu-dma, we no
longer need to work around the arch-private mapping.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 13 -------------
 1 file changed, 13 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
index d0d52c1d4aee..410ee1f83e0b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
@@ -23,10 +23,6 @@ 
 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
 #include "priv.h"
 
-#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
-#include <asm/dma-iommu.h>
-#endif
-
 static int
 nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev)
 {
@@ -109,15 +105,6 @@  nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev)
 	unsigned long pgsize_bitmap;
 	int ret;
 
-#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
-	if (dev->archdata.mapping) {
-		struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
-
-		arm_iommu_detach_device(dev);
-		arm_iommu_release_mapping(mapping);
-	}
-#endif
-
 	if (!tdev->func->iommu_bit)
 		return;