drm/i915: Add getter/setter for i915_gem_object->frontbuffer

Add getter/setter for i915_gem_object->frontbuffer and use it instead of
directly touching i915_gem_object->frontbuffer frontbuffer pointer.

v3:
 - Fix intel_frontbuffer_get return value
 - s/front_ret/cur/
v2: Move getter/setter into i915_gem_object.h

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727064142.751976-3-jouni.hogander@intel.com

1 files changed, 0 insertions, 27 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_frontbuffer.h b/drivers/gpu/drm/i915/display/intel_frontbuffer.h
index 3c474ed937fb..eeccc847331d 100644
--- a/drivers/gpu/drm/i915/display/intel_frontbuffer.h
+++ b/drivers/gpu/drm/i915/display/intel_frontbuffer.h
@@ -75,33 +75,6 @@ void intel_frontbuffer_flip(struct drm_i915_private *i915,
 
 void intel_frontbuffer_put(struct intel_frontbuffer *front);
 
-static inline struct intel_frontbuffer *
-__intel_frontbuffer_get(const struct drm_i915_gem_object *obj)
-{
-	struct intel_frontbuffer *front;
-
-	if (likely(!rcu_access_pointer(obj->frontbuffer)))
-		return NULL;
-
-	rcu_read_lock();
-	do {
-		front = rcu_dereference(obj->frontbuffer);
-		if (!front)
-			break;
-
-		if (unlikely(!kref_get_unless_zero(&front->ref)))
-			continue;
-
-		if (likely(front == rcu_access_pointer(obj->frontbuffer)))
-			break;
-
-		intel_frontbuffer_put(front);
-	} while (1);
-	rcu_read_unlock();
-
-	return front;
-}
-
 struct intel_frontbuffer *
 intel_frontbuffer_get(struct drm_i915_gem_object *obj);