2095                 if ((*pudev)->parent == NULL) // skip root hub, 2012.02.29  in usb_find_dev_for_driver()
2584 struct usb_device *usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus)  in usb_alloc_dev()  argument
2622   if (!parent)  in usb_alloc_dev()
2625   dev->parent = parent;  in usb_alloc_dev()
3321 int usb_new_device(struct usb_device *dev, struct device_s *parent)  in usb_new_device()  argument
3347   dev->dev.parent = parent;  in usb_new_device()
3357   dev->dev.dma_mask = parent->dma_mask;  in usb_new_device()
3562       if (dev->parent ) // not root hub  in usb_new_device()
3734     if (dev->parent ) // not root hub  in usb_new_device()
3836     interface->dev.parent = &dev->dev;  in usb_new_device()
3839     interface->dev.dma_mask = parent->dma_mask;  in usb_new_device()