Re: [Xen-devel] [PATCH] xen/arm: Return correct code error for xen_swiotlb_map_page

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Thu, 6 Nov 2014, Frediano Ziglio wrote:
> On ARM error code is not 0 so avoid to return it as error.
> 
> Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>

Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


Could you please fix the same error in lib/swiotlb.c too please?

>  drivers/xen/swiotlb-xen.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> index ebd8f21..3b8d628 100644
> --- a/drivers/xen/swiotlb-xen.c
> +++ b/drivers/xen/swiotlb-xen.c
> @@ -425,7 +425,7 @@ dma_addr_t xen_swiotlb_map_page(struct device *dev, 
> struct page *page,
>        */
>       if (!dma_capable(dev, dev_addr, size)) {
>               swiotlb_tbl_unmap_single(dev, map, size, dir);
> -             dev_addr = 0;
> +             dev_addr = DMA_ERROR_CODE;
>       }
>       return dev_addr;
>  }
> -- 
> 1.9.1
> 
> 
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