[PATCH] iommu: Allow .iotlb_sync_map to fail and handle s390's -ENOMEM return

[Jason Gunthorpe]

On Tue, Dec 13, 2022 at 01:11:04PM +0100, Niklas Schnelle wrote:
> --- a/drivers/iommu/tegra-gart.c
> +++ b/drivers/iommu/tegra-gart.c
> @@ -252,8 +252,8 @@ static int gart_iommu_of_xlate(struct device *dev,
>  	return 0;
>  }
>  
> -static void gart_iommu_sync_map(struct iommu_domain *domain, unsigned long iova,
> -				size_t size)
> +static int gart_iommu_sync_map(struct iommu_domain *domain, unsigned long iova,
> +			       size_t size)
>  {
>  	FLUSH_GART_REGS(gart_handle);
>  }

return 0 ?

Jason