[PATCH] drm/i915: restore ggtt double-bind avoidance

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This was accidentally lost in

commit 75d04a3773ecee617847de963ae4195d6aa74c28
Author: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Date:   Tue Apr 28 17:56:17 2015 +0300

    drm/i915/gtt: Allocate va range only if vma is not bound

While at it implement an improved version suggested by Chris which
avoids the double-bind irrespective of what type of bind is done
first.

Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Michel Thierry <michel.thierry@xxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_gem_gtt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 8fee6789fae2..11a3b511ae64 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1928,6 +1928,9 @@ static int ggtt_bind_vma(struct i915_vma *vma,
 					    cache_level, pte_flags);
 	}
 
+	if (!dev_priv->mm.aliasing_ppgtt)
+		vma->bound |= GLOBAL_BIND | LOCAL_BIND;
+
 	return 0;
 }
 
-- 
2.1.0

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