RE: [PATCH 6/7] iommu: Use right way to retrieve iommu_ops

[Tian, Kevin]

> From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> 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;
> +}