[PATCH 27/37] iommu/arm-smmu-v3: Register fault workqueue

[Yisheng Xie]

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);