From be19f0ff482bd5f800d916683784a7e1474d5d6b Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 28 May 2014 16:16:42 +0100
Subject: [PATCH] drm/i915: Check for a NULL shared dpll before dereferencing

This doesn't look possible but a little extra defense against the
improbable is worth it - an oops here could lockup the machine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Reading git-format-patch failed