[PATCH 2/2] drm/amdgpu: fix scatter-gather mapping with user pages

[Shane Francis]

> I think the other call to drm_prime_sg_to_page_addr_arrays in amdgpu
> needs a similar fix.
>
> Alex

Looking at the other call in amdgpu tmm it does not seem to undergo the
segment
remapping that happens in dma_map_sg, so should be safe.

I will port the changes to drm/radeon as that seems to use the same logic
for
user pages.

Regards : Shane Francis
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