void push_req_queue(requests_t *r, item_t *i) {
if (empty_req_queue(r)) {
r->head = r->tail = i;
} else {
r->tail->next = i;
r->tail = i;
}
}
item_t *pop_req_queue(requests_t *r) {
item_t *ret;
if (empty_req_queue(r)) {
return NULL;
} else if (r->head == r->tail) {
ret = r->head;
r->head = r->tail = NULL;
} else {
ret = r->head;
r->head = ret->next;
}
return ret;
}
/* Disables endpoint, is called by gadget driver */
static int udc_ep_disable(struct usb_ep *usbep)
{
struct udc_ep *ep = NULL;
unsigned long iflags;
if (!usbep)
return -EINVAL;
ep = container_of(usbep, struct udc_ep, ep);
if (usbep->name == ep0_string || !ep->ep.desc)
return -EINVAL;
DBG(ep->dev, "Disable ep-%d\n", ep->num);
spin_lock_irqsave(&ep->dev->lock, iflags);
udc_free_request(&ep->ep, &ep->bna_dummy_req->req);
empty_req_queue(ep);
ep_init(ep->dev->regs, ep);
spin_unlock_irqrestore(&ep->dev->lock, iflags);
return 0;
}
int emptyRQ(requests_t *r) {
return empty_req_queue(r);
}
