Ville Syrjälä 85798ac9b3 drm/i915: Fail if we can't get a fence for gen2/3 tiled scanout
Gen2/3 display engine depends on the fence for tiled scanout. So if we
fail to get a fence fail the entire operation.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180221160235.11134-2-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
2018-02-22 17:39:38 +02:00
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