linux-kernel - Re: [PATCH 08/12] dma-direct: use phys_to_dma_direct in dma_direct

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Date:   Thu, 10 Sep 2020 14:03:14 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     Christoph Hellwig <hch@....de>, Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        iommu@...ts.linux-foundation.org
Cc:     Tomasz Figa <tfiga@...omium.org>, Joerg Roedel <joro@...tes.org>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-ia64@...r.kernel.org, linux-mips@...r.kernel.org
Subject: Re: [PATCH 08/12] dma-direct: use phys_to_dma_direct in
 dma_direct_alloc

On 2020-09-08 17:47, Christoph Hellwig wrote:
> Replace the currently open code copy.

Reviewed-by: Robin Murphy <robin.murphy@....com>

> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>   kernel/dma/direct.c | 5 +----
>   1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
> index 12e9f5f75dfe4b..57a6e7d7cf8f16 100644
> --- a/kernel/dma/direct.c
> +++ b/kernel/dma/direct.c
> @@ -240,10 +240,7 @@ void *dma_direct_alloc(struct device *dev, size_t size,
>   			goto out_encrypt_pages;
>   	}
>   done:
> -	if (force_dma_unencrypted(dev))
> -		*dma_handle = __phys_to_dma(dev, page_to_phys(page));
> -	else
> -		*dma_handle = phys_to_dma(dev, page_to_phys(page));
> +	*dma_handle = phys_to_dma_direct(dev, page_to_phys(page));
>   	return ret;
>   
>   out_encrypt_pages:
>