From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri, 23 Apr 2010 21:01:01 +0000 (+0200)
Subject: drm/i915: don't allow tiling changes on pinned buffers v2
X-Git-Tag: v2.6.35-rc1~451^2~12^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31770bd49ab157c5639043ad7541c3e0c83afcc4;p=pandora-kernel.git

drm/i915: don't allow tiling changes on pinned buffers v2

Makes no sense and complicates matters for pipelined tiling changes.
So don't allow it and return -EBUSY.

v2: Fix reference leak. Thanks to Owain Ainsworth for spotting this.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Eric Anholt <eric@anholt.net>
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