239 		dev_err(opt->dev, "failed to write register %02x\n",  in opt3001_get_lux()
253 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_get_lux()
264 		dev_err(opt->dev, "failed to write register %02x\n",  in opt3001_get_lux()
292 		dev_err(opt->dev, "failed to write register %02x\n",  in opt3001_get_lux()
320 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_set_int_time()
450 		dev_err(opt->dev, "can't find scale for %d.%06u\n", val, val2);  in opt3001_write_event_value()
475 		dev_err(opt->dev, "failed to write register %02x\n", reg);  in opt3001_write_event_value()
516 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_write_event_config()
527 		dev_err(opt->dev, "failed to write register %02x\n",  in opt3001_write_event_config()
557 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_read_id()
567 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_read_id()
587 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_configure()
616 		dev_err(opt->dev, "failed to write register %02x\n",  in opt3001_configure()
623 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_configure()
633 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_configure()
655 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_irq()
677 			dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_irq()
732 		dev_err(dev, "failed to register IIO device\n");  in opt3001_probe()
740 		dev_err(dev, "failed to request IRQ #%d\n", irq);  in opt3001_probe()
758 		dev_err(opt->dev, "failed to read register %02x\n",  in opt3001_remove()
769 		dev_err(opt->dev, "failed to write register %02x\n",  in opt3001_remove()