19 struct usb_hub {  struct
28 		struct usb_hub_status	hub;  argument
52 	struct usb_hub_descriptor *descriptor;	/* class descriptor */  argument
53 	struct usb_tt		tt;		/* Transaction Translator */
55 	unsigned		mA_per_port;	/* current for each child */
57 	unsigned		wakeup_enabled_descendants;
60 	unsigned		limited_power:1;
61 	unsigned		quiescing:1;
62 	unsigned		disconnected:1;
63 	unsigned		in_reset:1;
65 	unsigned		quirk_check_port_auto_suspend:1;
67 	unsigned		has_indicators:1;
68 	u8			indicator[USB_MAXCHILDREN];
69 	struct delayed_work	leds;
70 	struct delayed_work	init_work;
71 	struct work_struct      events;
72 	spinlock_t		irq_urb_lock;
73 	struct timer_list	irq_urb_retry;
74 	struct usb_port		**ports;