struct usb_host_endpoint *ep)
{
struct xhci_hcd *xhci;
+ struct usb_device *udev;
+ unsigned int ep_index;
+ unsigned long flags;
+ int ret;
+ struct xhci_virt_ep *virt_ep;
+ struct xhci_command *command;
xhci = hcd_to_xhci(hcd);
- udev = (struct usb_device *) ep->hcpriv;
- /* Called with a root hub endpoint (or an endpoint that wasn't added
- * with xhci_add_endpoint()
- */
- if (!ep->hcpriv)
- return;
- ep_index = xhci_get_endpoint_index(&ep->desc);
- virt_ep = &xhci->devs[udev->slot_id]->eps[ep_index];
- if (!virt_ep->stopped_td) {
- xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
- "Endpoint 0x%x not halted, refusing to reset.",
- ep->desc.bEndpointAddress);
- return;
- }
- if (usb_endpoint_xfer_control(&ep->desc)) {
- xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
- "Control endpoint stall already handled.");
- return;
- }
+ command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
+ if (!command)
+ return;
+
+ xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
+ "Queueing reset endpoint command");
+ spin_lock_irqsave(&xhci->lock, flags);
+ ret = xhci_queue_reset_ep(xhci, command, udev->slot_id, ep_index);
/*
- * Can't change the ring dequeue pointer until it's transitioned to the
- * stopped state, which is only upon a successful reset endpoint
- * command. Better hope that last command worked!
+ * We might need to implement the config ep cmd in xhci 4.8.1 note:
+ * The Reset Endpoint Command may only be issued to endpoints in the
+ * Halted state. If software wishes reset the Data Toggle or Sequence
+ * Number of an endpoint that isn't in the Halted state, then software
+ * may issue a Configure Endpoint Command with the Drop and Add bits set
+ * for the target endpoint. that is in the Stopped state.
*/
- if (!ret) {
- xhci_cleanup_stalled_ring(xhci, udev, ep_index);
- kfree(virt_ep->stopped_td);
- xhci_ring_cmd_db(xhci);
- }
- virt_ep->stopped_td = NULL;
- virt_ep->stopped_stream = 0;
- spin_unlock_irqrestore(&xhci->lock, flags);
- if (ret)
- xhci_warn(xhci, "FIXME allocate a new ring segment\n");
+ /* For now just print debug to follow the situation */
+ xhci_dbg(xhci, "Endpoint 0x%x ep reset callback called\n",
+ ep->desc.bEndpointAddress);
}
static int xhci_check_streams_endpoint(struct xhci_hcd *xhci,