CDSL_NONE 1422 drivers/cdrom/cdrom.c if (slot == CDSL_NONE) { CDSL_NONE 2454 drivers/cdrom/cdrom.c if (arg != CDSL_CURRENT && arg != CDSL_NONE) { CDSL_NONE 2554 drivers/cdrom/cdrom.c (arg == CDSL_CURRENT || arg == CDSL_NONE))