dev_attr_physical_device 418 drivers/block/xen-blkback/xenbus.c error = device_create_file(&dev->dev, &dev_attr_physical_device); dev_attr_physical_device 434 drivers/block/xen-blkback/xenbus.c fail1: device_remove_file(&dev->dev, &dev_attr_physical_device); dev_attr_physical_device 442 drivers/block/xen-blkback/xenbus.c device_remove_file(&dev->dev, &dev_attr_physical_device);