From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Let's scream if we are about to release a frontbuffer which
is still in use.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_frontbuffer.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_frontbuffer.c b/drivers/gpu/drm/i915/display/intel_frontbuffer.c
index 7b38eee9980f..6fc6965b6133 100644
--- a/drivers/gpu/drm/i915/display/intel_frontbuffer.c
+++ b/drivers/gpu/drm/i915/display/intel_frontbuffer.c
@@ -224,6 +224,8 @@ static void frontbuffer_release(struct kref *ref)
struct drm_i915_gem_object *obj = front->obj;
struct i915_vma *vma;
+ drm_WARN_ON(obj->base.dev, atomic_read(&front->bits));
+
spin_lock(&obj->vma.lock);
for_each_ggtt_vma(vma, obj) {
i915_vma_clear_scanout(vma);
--
2.26.2
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