ret_acpi 642 drivers/tty/serdev/core.c int ret_of, ret_acpi, ret; ret_acpi 655 drivers/tty/serdev/core.c ret_acpi = acpi_serdev_register_devices(ctrl); ret_acpi 656 drivers/tty/serdev/core.c if (ret_of && ret_acpi) { ret_acpi 658 drivers/tty/serdev/core.c ret_of, ret_acpi);