From 6e450ab24dc645d776e65bbb91fc5f6788087c32 Mon Sep 17 00:00:00 2001
From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Thu, 15 May 2014 20:58:07 +0300
Subject: [PATCH] drm/i915: Bail out early on gen6_signal if no semaphores
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If we dont have semaphores enabled, we allocate 4
dwords for signalling. But end up emitting more regardless.

Fix this by bailing out early if semaphores are not enabled.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78274
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78283
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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