Hi Jean,
[...]
> @@ -3168,6 +3260,13 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
> if (ret)
> return ret;
>
> + if (smmu->features & (ARM_SMMU_FEAT_STALLS | ARM_SMMU_FEAT_PRI)) {
> + smmu->faultq_nb.notifier_call = arm_smmu_flush_queues;
> + ret = iommu_fault_queue_register(&smmu->faultq_nb);
> + if (ret)
> + return ret;
I find a case here: CONFIG_IOMMU_FAULT=n, and smmu support feature STALLS or PRI,
the device probe will failed here, is this what we want?
Thanks
Yisheng
> + }
> +
> /* And we're up. Go go go! */
> ret = iommu_device_sysfs_add(&smmu->iommu, dev, NULL,
> "smmu3.%pa", &ioaddr);
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