frontend_teardown 652 drivers/gpu/drm/sun4i/sun4i_backend.c if (backend->frontend_teardown) { frontend_teardown 654 drivers/gpu/drm/sun4i/sun4i_backend.c backend->frontend_teardown = false; frontend_teardown 184 drivers/gpu/drm/sun4i/sun4i_backend.h bool frontend_teardown; frontend_teardown 78 drivers/gpu/drm/sun4i/sun4i_layer.c backend->frontend_teardown = true;