> From: Lu Baolu <[email protected]>
> Sent: Monday, January 24, 2022 3:11 PM
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index aa5486243892..111b3e9c79bb 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -385,6 +385,14 @@ static inline void iommu_iotlb_gather_init(struct
> iommu_iotlb_gather *gather)
> };
> }
>
> +static inline const struct iommu_ops *dev_iommu_ops_get(struct device
> *dev)
dev_get_iommu_ops or just dev_iommu_ops?
> +{
> + if (dev && dev->iommu && dev->iommu->iommu_dev)
> + return dev->iommu->iommu_dev->ops;
> +
> + return NULL;
> +}
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