02.10.2020 09:08, Nicolin Chen пишет:
> @@ -865,7 +866,11 @@ static struct iommu_group *tegra_smmu_device_group(struct device *dev)
> group->smmu = smmu;
> group->soc = soc;
>
> - group->group = iommu_group_alloc();
> + if (dev_is_pci(dev))
> + group->group = pci_device_group(dev);
> + else
> + group->group = generic_device_group(dev);
> +
> if (IS_ERR(group->group)) {
> devm_kfree(smmu->dev, group);
> mutex_unlock(&smmu->lock);
> @@ -1069,22 +1074,32 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev,
> iommu_device_set_fwnode(&smmu->iommu, dev->fwnode);
>
> err = iommu_device_register(&smmu->iommu);
> - if (err) {
> - iommu_device_sysfs_remove(&smmu->iommu);
> - return ERR_PTR(err);
> - }
> + if (err)
> + goto err_sysfs;
>
> err = bus_set_iommu(&platform_bus_type, &tegra_smmu_ops);
> - if (err < 0) {
> - iommu_device_unregister(&smmu->iommu);
> - iommu_device_sysfs_remove(&smmu->iommu);
> - return ERR_PTR(err);
> - }
> + if (err < 0)
> + goto err_unregister;
> +
> +#ifdef CONFIG_PCI
> + err = bus_set_iommu(&pci_bus_type, &tegra_smmu_ops);
> + if (err < 0)
> + goto err_bus_set;
> +#endif
>
> if (IS_ENABLED(CONFIG_DEBUG_FS))
> tegra_smmu_debugfs_init(smmu);
>
> return smmu;
> +
> +err_bus_set: __maybe_unused;
__maybe_unused?
