75 struct usb_hcd {  struct
80 	struct usb_bus		self;		/* hcd is-a bus */
81 	struct kref		kref;		/* reference counter */
83 	const char		*product_desc;	/* product/vendor string */
84 	int			speed;		/* Speed for this roothub.
88 	char			irq_descr[24];	/* driver + bus # */
90 	struct timer_list	rh_timer;	/* drives root-hub polling */
91 	struct urb		*status_urb;	/* the current status urb */
93 	struct work_struct	wakeup_work;	/* for remote wakeup */
99 	const struct hc_driver	*driver;	/* hw-specific hooks */
105 	struct usb_phy		*usb_phy;
106 	struct usb_phy_roothub	*phy_roothub;
112 	unsigned long		flags;
149 	unsigned		rh_registered:1;/* is root hub registered? */
150 	unsigned		rh_pollable:1;	/* may we poll the root hub? */
151 	unsigned		msix_enabled:1;	/* driver has MSI-X enabled? */
152 	unsigned		msi_enabled:1;	/* driver has MSI enabled? */
158 	unsigned		skip_phy_initialization:1;
162 	unsigned		uses_new_polling:1;
163 	unsigned		wireless:1;	/* Wireless USB HCD */
164 	unsigned		has_tt:1;	/* Integrated TT in root hub */
165 	unsigned		amd_resume_bug:1; /* AMD remote wakeup quirk */
166 	unsigned		can_do_streams:1; /* HC supports streams */
167 	unsigned		tpl_support:1; /* OTG & EH TPL support */
168 	unsigned		cant_recv_wakeups:1;
193 	struct usb_hcd		*shared_hcd;  argument
194 	struct usb_hcd		*primary_hcd;  argument
198 	struct dma_pool		*pool[HCD_BUFFER_POOLS];
200 	int			state;
228 static inline struct usb_bus *hcd_to_bus(struct usb_hcd *hcd)  in hcd_to_bus()  argument