[PATCH 15/28] drm/i915: Add lock for unbinding to i915_gem_object_ggtt_pin_ww

[Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>]

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_gem.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 981e383d1a5d..6aa9e465b48e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -931,7 +931,14 @@ i915_gem_object_ggtt_pin_ww(struct drm_i915_gem_object *obj,
 			goto new_vma;
 		}
 
-		ret = i915_vma_unbind(vma);
+		ret = 0;
+		if (!ww)
+			ret = i915_gem_object_lock_interruptible(obj, NULL);
+		if (!ret) {
+			ret = i915_vma_unbind(vma);
+			if (!ww)
+				i915_gem_object_unlock(obj);
+		}
 		if (ret)
 			return ERR_PTR(ret);
 	}
-- 
2.33.0