drm/i915: rearrange mutex acquisition for pread
authorChris Wilson <chris@chris-wilson.co.uk>
Thu, 14 Oct 2010 14:26:45 +0000 (15:26 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Tue, 19 Oct 2010 08:19:55 +0000 (09:19 +0100)
... to avoid the double acquisition along fast[er] paths.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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