1 files changed, 30 insertions, 1 deletions

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 36c858e5b529..9012098add6b 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1071,6 +1071,15 @@ bandwidth_change:
                         xhci_warn(xhci, "Reset device command completion "
                                         "for disabled slot %u\n", slot_id);
                 break;
+        case TRB_TYPE(TRB_NEC_GET_FW):
+                if (!(xhci->quirks & XHCI_NEC_HOST)) {
+                        xhci->error_bitmask |= 1 << 6;
+                        break;
+                }
+                xhci_dbg(xhci, "NEC firmware version %2x.%02x\n",
+                                NEC_FW_MAJOR(event->status),
+                                NEC_FW_MINOR(event->status));
+                break;
         default:
                 /* Skip over unknown commands on the event ring */
                 xhci->error_bitmask |= 1 << 6;
@@ -1079,6 +1088,17 @@ bandwidth_change:
         inc_deq(xhci, xhci->cmd_ring, false);
 }
 
+static void handle_vendor_event(struct xhci_hcd *xhci,
+                union xhci_trb *event)
+{
+        u32 trb_type;
+
+        trb_type = TRB_FIELD_TO_TYPE(event->generic.field[3]);
+        xhci_dbg(xhci, "Vendor specific event TRB type = %u\n", trb_type);
+        if (trb_type == TRB_NEC_CMD_COMP && (xhci->quirks & XHCI_NEC_HOST))
+                handle_cmd_completion(xhci, &event->event_cmd);
+}
+
 static void handle_port_status(struct xhci_hcd *xhci,
                 union xhci_trb *event)
 {
@@ -1659,7 +1679,10 @@ void xhci_handle_event(struct xhci_hcd *xhci)
                         update_ptrs = 0;
                 break;
         default:
-                xhci->error_bitmask |= 1 << 3;
+                if ((event->event_cmd.flags & TRB_TYPE_BITMASK) >= TRB_TYPE(48))
+                        handle_vendor_event(xhci, event);
+                else
+                        xhci->error_bitmask |= 1 << 3;
         }
         /* Any of the above functions may drop and re-acquire the lock, so check
          * to make sure a watchdog timer didn't mark the host as non-responsive.
@@ -2378,6 +2401,12 @@ int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
                         false);
 }
 
+int xhci_queue_vendor_command(struct xhci_hcd *xhci,
+                u32 field1, u32 field2, u32 field3, u32 field4)
+{
+        return queue_command(xhci, field1, field2, field3, field4, false);
+}
+
 /* Queue a reset device command TRB */
 int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id)
 {