USB: core, wusbcore: use bus_to_hcd

Use bus_to_hcd() instead of open-coding it.

Signed-off-by: Geliang Tang <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/core/hcd.c

···
 
 int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg)
 {
-	struct usb_hcd	*hcd = container_of(rhdev->bus, struct usb_hcd, self);
+	struct usb_hcd	*hcd = bus_to_hcd(rhdev->bus);
 	int		status;
 	int		old_state = hcd->state;
 
···
 
 int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg)
 {
-	struct usb_hcd	*hcd = container_of(rhdev->bus, struct usb_hcd, self);
+	struct usb_hcd	*hcd = bus_to_hcd(rhdev->bus);
 	int		status;
 	int		old_state = hcd->state;
 
···
 	 * boards with root hubs hooked up to internal devices (instead of
 	 * just the OTG port) may need more attention to resetting...
 	 */
-	hcd = container_of (bus, struct usb_hcd, self);
+	hcd = bus_to_hcd(bus);
 	if (port_num && hcd->driver->start_port_reset)
 		status = hcd->driver->start_port_reset(hcd, port_num);
 

drivers/usb/core/hub.c

···
 	struct usb_hcd *hcd;
 	if (hub->hdev->parent != NULL)  /* not a root hub? */
 		return 0;
-	hcd = container_of(hub->hdev->bus, struct usb_hcd, self);
+	hcd = bus_to_hcd(hub->hdev->bus);
 	return hcd->wireless;
 }
 

drivers/usb/core/usb.c

···
 /* Returns 1 if @usb_bus is WUSB, 0 otherwise */
 static unsigned usb_bus_is_wusb(struct usb_bus *bus)
 {
-	struct usb_hcd *hcd = container_of(bus, struct usb_hcd, self);
+	struct usb_hcd *hcd = bus_to_hcd(bus);
 	return hcd->wireless;
 }
 

drivers/usb/wusbcore/wusbhc.h

···
 struct usb_hcd *usb_hcd_get_by_usb_dev(struct usb_device *usb_dev)
 {
 	struct usb_hcd *usb_hcd;
-	usb_hcd = container_of(usb_dev->bus, struct usb_hcd, self);
+	usb_hcd = bus_to_hcd(usb_dev->bus);
 	return usb_get_hcd(usb_hcd);
 }