70 struct usb_hcd {  struct
75 	struct usb_bus		self;		/* hcd is-a bus */
76 	struct kref		kref;		/* reference counter */
78 	const char		*product_desc;	/* product/vendor string */
79 	int			speed;		/* Speed for this roothub.
83 	char			irq_descr[24];	/* driver + bus # */
85 	struct timer_list	rh_timer;	/* drives root-hub polling */
86 	struct urb		*status_urb;	/* the current status urb */
88 	struct work_struct	wakeup_work;	/* for remote wakeup */
94 	const struct hc_driver	*driver;	/* hw-specific hooks */
100 	unsigned long		flags;
119 	unsigned		rh_registered:1;/* is root hub registered? */
120 	unsigned		rh_pollable:1;	/* may we poll the root hub? */
121 	unsigned		msix_enabled:1;	/* driver has MSI-X enabled? */
148 	struct usb_hcd		*shared_hcd;  argument
149 	struct usb_hcd		*primary_hcd;  argument
153 	struct dma_pool		*pool[HCD_BUFFER_POOLS];
155 	int			state;
183 static inline struct usb_bus *hcd_to_bus(struct usb_hcd *hcd)  in hcd_to_bus()  argument