usb_sg_wait
usb_sg_wait(&ctx.sgr);
usb_sg_wait(&sgr);
usb_sg_wait(&ucr->current_sg);
usb_sg_wait(&vub300->sg_request);
usb_sg_wait(&vub300->sg_request);
EXPORT_SYMBOL_GPL(usb_sg_wait);
usb_sg_wait(req);
usb_sg_wait(&us->current_sg);
void usb_sg_wait(struct usb_sg_request *io);