[PATCH v1 13/16] xen: swiotlb: return error code from xen_swiotlb_map_sg()

[Boris Ostrovsky]

On 7/15/21 12:45 PM, Logan Gunthorpe wrote:
> From: Martin Oliveira <martin.oliveira at eideticom.com>
>
> The .map_sg() op now expects an error code instead of zero on failure.
>
> xen_swiotlb_map_sg() may only fail if xen_swiotlb_map_page() fails, but
> xen_swiotlb_map_page() only supports returning errors as
> DMA_MAPPING_ERROR. So coalesce all errors into EINVAL.


Reviewed-by: Boris Ostrovsky <boris.ostrovsky at oracle.com>