HelenOS sources

USB_CLASS_HUB      64 uspace/drv/bus/usb/usbhub/usbhub.c 	.interface_class = USB_CLASS_HUB, \
USB_CLASS_HUB      55 uspace/drv/bus/usb/vhc/hub/virthub.c 	.device_class = USB_CLASS_HUB,
USB_CLASS_HUB      69 uspace/drv/bus/usb/vhc/hub/virthub.c 	.interface_class = USB_CLASS_HUB,
USB_CLASS_HUB     148 uspace/drv/bus/usb/xhci/device.c 	if (desc->device_class != USB_CLASS_HUB)
USB_CLASS_HUB      61 uspace/lib/usb/src/class.c 	case USB_CLASS_HUB:
USB_CLASS_HUB      51 uspace/lib/usbvirt/src/virthub_descriptors.c 	.device_class = USB_CLASS_HUB,
USB_CLASS_HUB      65 uspace/lib/usbvirt/src/virthub_descriptors.c 	.interface_class = USB_CLASS_HUB,
HelenOS homepage, sources at GitHub