From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 28 May 2014 15:16:42 +0000 (+0100)
Subject: drm/i915: Check for a NULL shared dpll before dereferencing
X-Git-Tag: cleanup-for-v3.18~84^2~63^2~79
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be19f0ff482bd5f800d916683784a7e1474d5d6b;p=pandora-kernel.git

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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