From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Thu, 15 May 2014 17:58:07 +0000 (+0300)
Subject: drm/i915: Bail out early on gen6_signal if no semaphores
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~38^2~120
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e450ab24dc645d776e65bbb91fc5f6788087c32;p=pandora-kernel.git

drm/i915: Bail out early on gen6_signal if no semaphores

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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