Revert "xhci: generate a Transfer Event for each Transfer TRB with th…

…e IOC bit set"

This makes xhci generate multiple short packet events in case of
multi-trb transfers.  Which is wrong.  We need to fix this in a
different way.

This reverts commit aa68578.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/usb/hcd-xhci.c

@@ -1767,18 +1767,9 @@ static void xhci_xfer_report(XHCITransfer *xfer)
             break;
         }
 
-        /*
-         * XHCI 1.1, 4.11.3.1 Transfer Event TRB -- "each Transfer TRB
-         * encountered with its IOC flag set to '1' shall generate a Transfer
-         * Event."
-         *
-         * Otherwise, longer transfers can have multiple data TRBs (for scatter
-         * gather). Short transfers and errors should be reported once per
-         * transfer only.
-         */
-        if ((trb->control & TRB_TR_IOC) ||
-            (!reported && ((shortpkt && (trb->control & TRB_TR_ISP)) ||
-                           (xfer->status != CC_SUCCESS && left == 0)))) {
+        if (!reported && ((trb->control & TRB_TR_IOC) ||
+                          (shortpkt && (trb->control & TRB_TR_ISP)) ||
+                          (xfer->status != CC_SUCCESS && left == 0))) {
             event.slotid = xfer->slotid;
             event.epid = xfer->epid;
             event.length = (trb->status & 0x1ffff) - chunk;