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    Subject[PATCH 4.14 010/100] xhci: Add check for invalid byte size error when UAS devices are connected.
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Sandeep Singh <sandeep.singh@amd.com>

    commit d9193efba84fe4c4aa22a569fade5e6ca971f8af upstream.

    Observed "TRB completion code (27)" error which corresponds to Stopped -
    Length Invalid error(xhci spec section 4.17.4) while connecting USB to
    SATA bridge.

    Looks like this case was not considered when the following patch[1] was
    committed. Hence adding this new check which can prevent
    the invalid byte size error.

    [1] ade2e3a xhci: handle transfer events without TRB pointer

    Cc: <stable@vger.kernel.org>
    Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
    cc: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
    cc: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
    Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/usb/host/xhci-ring.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/usb/host/xhci-ring.c
    +++ b/drivers/usb/host/xhci-ring.c
    @@ -2335,6 +2335,7 @@ static int handle_tx_event(struct xhci_h
    goto cleanup;
    case COMP_RING_UNDERRUN:
    case COMP_RING_OVERRUN:
    + case COMP_STOPPED_LENGTH_INVALID:
    goto cleanup;
    default:
    xhci_err(xhci, "ERROR Transfer event for unknown stream ring slot %u ep %u\n",

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