From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yu Zhao <yuzhao@google.com>
Subject: Re: [PATCH] drm/ttm: properly unmap dma page upon failure
Date: Sat, 6 Jul 2019 11:33:09 -0600
Message-ID: <20190706173309.GA111051@google.com>
References: <20190325202250.212801-1-yuzhao@google.com>
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To: Christian Koenig <christian.koenig@amd.com>, Huang Rui <ray.huang@amd.com>, Junwei Zhang <Jerry.Zhang@amd.com>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>
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On Mon, Mar 25, 2019 at 02:22:50PM -0600, Yu Zhao wrote:
> dma_unmap_page() must be called with exactly the same dma address
> and size returned by dma_map_page(). Otherwise, the function may
> fail.
> 
> This is at least the case for debug_dma_unmap_page() and AMD iommu
> unmap_page callback.

Hi, can we please take this fix? Thanks.