4.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mathias Nyman <mathias.ny...@linux.intel.com>
commit 0ab2881a406b9fd46224a3e8253bbc0141b4f844 upstream.
A control transfer that stopped at the status stage incorrectly
warned about a "unexpected TRB Type 4", and did not set the
transferred actual_length for the URB.
The URB actual_length for control transfers should contain the
bytes transferred in the data stage.
Bytes of a partially sent setup stage and missing bytes from
status stage should be left out.
Signed-off-by: Mathias Nyman <mathias.ny...@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/usb/host/xhci-ring.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2000,6 +2000,9 @@ static int process_ctrl_td(struct xhci_h
case TRB_NORMAL:
td->urb->actual_length = requested - remaining;
goto finish_td;
+ case TRB_STATUS:
+ td->urb->actual_length = requested;
+ goto finish_td;
default:
xhci_warn(xhci, "WARN: unexpected TRB Type %d\n",
trb_type);
