HelenOS sources

IPC_M_USB_GET_MY_DESCRIPTION   81 uspace/lib/drv/generic/remote_usb.c 	    IPC_M_USB_GET_MY_DESCRIPTION, &address, &depth, &speed, &handle,
IPC_M_USB_GET_MY_DESCRIPTION  100 uspace/lib/drv/generic/remote_usb.c 	[IPC_M_USB_GET_MY_DESCRIPTION] = remote_usb_get_my_description,
HelenOS homepage, sources at GitHub