dev_attr_platform_id 175 sound/soc/intel/skylake/skl-nhlt.c if (sysfs_create_file(&dev->kobj, &dev_attr_platform_id.attr)) dev_attr_platform_id 185 sound/soc/intel/skylake/skl-nhlt.c sysfs_remove_file(&dev->kobj, &dev_attr_platform_id.attr);