rcar_du_writeback_init  753 drivers/gpu/drm/rcar-du/rcar_du_kms.c 			ret = rcar_du_writeback_init(rcdu, rcrtc);
rcar_du_writeback_init   18 drivers/gpu/drm/rcar-du/rcar_du_writeback.h int rcar_du_writeback_init(struct rcar_du_device *rcdu,