1 files changed, 25 insertions, 5 deletions

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 800f417c7309..70cacbbe7fb9 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1733,6 +1733,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
                 frame->status = -EOVERFLOW;
                 skip_td = true;
                 break;
+        case COMP_DEV_ERR:
         case COMP_STALL:
                 frame->status = -EPROTO;
                 skip_td = true;
@@ -1767,9 +1768,6 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
                 }
         }
 
-        if ((idx == urb_priv->length - 1) && *status == -EINPROGRESS)
-                *status = 0;
-
         return finish_td(xhci, td, event_trb, event, ep, status, false);
 }
 
@@ -1787,8 +1785,7 @@ static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
         idx = urb_priv->td_cnt;
         frame = &td->urb->iso_frame_desc[idx];
 
-        /* The transfer is partly done */
-        *status = -EXDEV;
+        /* The transfer is partly done. */
         frame->status = -EXDEV;
 
         /* calc actual length */
@@ -2016,6 +2013,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
                                  TRB_TO_SLOT_ID(le32_to_cpu(event->flags)),
                                  ep_index);
                 goto cleanup;
+        case COMP_DEV_ERR:
+                xhci_warn(xhci, "WARN: detect an incompatible device");
+                status = -EPROTO;
+                break;
         case COMP_MISSED_INT:
                 /*
                  * When encounter missed service error, one or more isoc tds
@@ -2063,6 +2064,20 @@ static int handle_tx_event(struct xhci_hcd *xhci,
                 /* Is this a TRB in the currently executing TD? */
                 event_seg = trb_in_td(ep_ring->deq_seg, ep_ring->dequeue,
                                 td->last_trb, event_dma);
+
+                /*
+                 * Skip the Force Stopped Event. The event_trb(event_dma) of FSE
+                 * is not in the current TD pointed by ep_ring->dequeue because
+                 * that the hardware dequeue pointer still at the previous TRB
+                 * of the current TD. The previous TRB maybe a Link TD or the
+                 * last TRB of the previous TD. The command completion handle
+                 * will take care the rest.
+                 */
+                if (!event_seg && trb_comp_code == COMP_STOP_INVAL) {
+                        ret = 0;
+                        goto cleanup;
+                }
+
                 if (!event_seg) {
                         if (!ep->skip ||
                             !usb_endpoint_xfer_isoc(&td->urb->ep->desc)) {
@@ -2158,6 +2173,11 @@ cleanup:
                                                 urb->transfer_buffer_length,
                                                 status);
                         spin_unlock(&xhci->lock);
+                        /* EHCI, UHCI, and OHCI always unconditionally set the
+                         * urb->status of an isochronous endpoint to 0.
+                         */
+                        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
+                                status = 0;
                         usb_hcd_giveback_urb(bus_to_hcd(urb->dev->bus), urb, status);
                         spin_lock(&xhci->lock);
                 }