DRM_FRAMEBUFFER_HAS_HANDLE_REF
if (drm_WARN_ON_ONCE(dev, fb->internal_flags & DRM_FRAMEBUFFER_HAS_HANDLE_REF(i)))
fb->internal_flags &= ~DRM_FRAMEBUFFER_HAS_HANDLE_REF(i);
fb->internal_flags |= DRM_FRAMEBUFFER_HAS_HANDLE_REF(i);
if (fb->internal_flags & DRM_FRAMEBUFFER_HAS_HANDLE_REF(i)) {
fb->internal_flags &= ~DRM_FRAMEBUFFER_HAS_HANDLE_REF(i);
if (fb->internal_flags & DRM_FRAMEBUFFER_HAS_HANDLE_REF(i))