From: Alexandre Courbot <acourbot@nvidia.com>
Date: Fri, 15 May 2015 07:09:54 +0000 (+0900)
Subject: drm/ttm: dma: Don't crash on memory in the vmalloc range
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~46^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c34d824bd750f4a4287639fee8335ec51530024;p=pandora-kernel.git

drm/ttm: dma: Don't crash on memory in the vmalloc range

dma_alloc_coherent() can return memory in the vmalloc range.
virt_to_page() cannot handle such addresses and crashes. This
patch detects such cases and obtains the struct page * using
vmalloc_to_page() instead.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

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