Merge "usb: gadget: composite: Protect cdev in composite_suspend()"

{

	struct usb_composite_dev	*cdev = get_gadget_data(gadget);

	struct usb_function		*f;

	unsigned long			flags;

	/* REVISIT:  should we have config level

	 * suspend/resume callbacks?

	 */

	DBG(cdev, "suspend\n");

	spin_lock_irqsave(&cdev->lock, flags);

	if (cdev->config) {

		list_for_each_entry(f, &cdev->config->functions, list) {

			if (f->suspend)

		cdev->driver->suspend(cdev);

	cdev->suspended = 1;

	spin_unlock_irqrestore(&cdev->lock, flags);

	usb_gadget_vbus_draw(gadget, 2);

}