Commit 45c690ae authored by Lu Baolu's avatar Lu Baolu Committed by Lyude Paul
Browse files

drm/tegra: Use iommu_paging_domain_alloc() 



Commit <17de3f5f> ("iommu: Retire bus ops") removes iommu ops from
the bus structure. The iommu subsystem no longer relies on bus for
operations. So iommu_domain_alloc() interface is no longer relevant.

Replace iommu_domain_alloc() with iommu_paging_domain_alloc() which takes
the physical device from which the host1x_device virtual device was
instantiated. This physical device is a common parent to all physical
devices that are part of the virtual device.

Suggested-by: default avatarThierry Reding <thierry.reding@gmail.com>
Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: default avatarLyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902014700.66095-4-baolu.lu@linux.intel.com
parent d8c07bee

drivers/gpu/drm/tegra/drm.c

+3 −2
Original line number Diff line number Diff line
@@ -1135,6 +1135,7 @@ static bool host1x_drm_wants_iommu(struct host1x_device *dev) 


static int host1x_drm_probe(struct host1x_device *dev)

{

	struct device *dma_dev = dev->dev.parent;

	struct tegra_drm *tegra;

	struct drm_device *drm;

	int err;
@@ -1149,8 +1150,8 @@ static int host1x_drm_probe(struct host1x_device *dev) 
		goto put;

	}



	if (host1x_drm_wants_iommu(dev) && iommu_present(&platform_bus_type)) {

		tegra->domain = iommu_domain_alloc(&platform_bus_type);

	if (host1x_drm_wants_iommu(dev) && device_iommu_mapped(dma_dev)) {

		tegra->domain = iommu_paging_domain_alloc(dma_dev);

		if (!tegra->domain) {

			err = -ENOMEM;

			goto free;