RE: [PATCH v5 2/9] iommu: Replace sva_iommu with iommu_attach_handle

[Tian, Kevin]

> From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> Sent: Tuesday, April 30, 2024 10:57 PM
> 
>  #else
> -static inline struct iommu_sva *
> +static inline struct iommu_attach_handle *
>  iommu_sva_bind_device(struct device *dev, struct mm_struct *mm)
>  {
> -	return NULL;
> +	return ERR_PTR(-ENODEV);
>  }
> 

this should be a separate fix.

existing drivers (idxd and uacce) only check IS_ERR() on the return
value. A Null pointer may lead to an error reported at a later point.