Messages in this thread | | | Subject | Re: [PATCH v3 18/18] drm/tegra: Use the iommu dma_owner mechanism | From | Lu Baolu <> | Date | Tue, 7 Dec 2021 10:34:04 +0800 |
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On 12/6/21 8:40 PM, Jason Gunthorpe wrote: > On Mon, Dec 06, 2021 at 09:59:03AM +0800, Lu Baolu wrote: > >> @@ -941,48 +944,44 @@ int host1x_client_iommu_attach(struct host1x_client *client) >> * not the shared IOMMU domain, don't try to attach it to a different >> * domain. This allows using the IOMMU-backed DMA API. >> */ >> - if (domain && domain != tegra->domain) >> + client->group = NULL; >> + if (!client->dev->iommu_group || (domain && domain != tegra->domain)) >> + return iommu_device_set_dma_owner(client->dev, >> + DMA_OWNER_DMA_API, NULL); >> + >> + if (!tegra->domain) >> return 0; > > This if should be removed completely now > > Jason >
Sure.
Best regards, baolu
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