[Bug 208327] xhci_hcd issue transfer event - usb3.0

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=208327

--- Comment #7 from Mathias Nyman (mathias.nyman@linux.intel.com) ---
To check if this is related to the soft retry of the transaction errors
we could prevent soft retry with the following change:

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 2c255d0620b0..964cacc1092e 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2302,6 +2302,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci,
struct xhci_td *td,
                remaining       = 0;
                break;
        case COMP_USB_TRANSACTION_ERROR:
+               break;
                if ((ep_ring->err_count++ > MAX_SOFT_RETRY) ||
                    le32_to_cpu(slot_ctx->tt_info) & TT_SLOT)
                        break;


Does that help?
After this chagen you should still see the Transactio errors, but not the
"Transfer event TRB DMA ptr not part of current TD.." message.

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