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	/* locking wrappers for XFER lock */			/* locking wrappers for XFER lock */
	#define USB_XFER_LOCK(_x) USB_MTX_LOCK((_x)->xroot->xfer_mtx)			#define USB_XFER_LOCK(_x) USB_MTX_LOCK((_x)->xroot->xfer_mtx)
	#define USB_XFER_UNLOCK(_x) USB_MTX_UNLOCK((_x)->xroot->xfer_mtx)			#define USB_XFER_UNLOCK(_x) USB_MTX_UNLOCK((_x)->xroot->xfer_mtx)
	#define USB_XFER_LOCK_ASSERT(_x, _t) USB_MTX_ASSERT((_x)->xroot->xfer_mtx, _t)			#define USB_XFER_LOCK_ASSERT(_x, _t) USB_MTX_ASSERT((_x)->xroot->xfer_mtx, _t)

	/* helper for converting pointers to integers */			/* helper for converting pointers to integers */
	#define USB_P2U(ptr) \			#define USB_P2U(ptr) \
	(((const uint8_t )(ptr)) - ((const uint8_t )0))			((uintptr_t)(ptr))

	/* helper for computing offsets */			/* helper for computing offsets */
	#define USB_ADD_BYTES(ptr,size) \			#define USB_ADD_BYTES(ptr,size) \
	((void *)(USB_P2U(ptr) + (size)))			((void )(__DECONST(char , (ptr)) + (size)))

	/* debug macro */			/* debug macro */
	#define USB_ASSERT KASSERT			#define USB_ASSERT KASSERT

	/* structure prototypes */			/* structure prototypes */

	struct file;			struct file;
	struct usb_bus;			struct usb_bus;
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