0127-usb-core-Don-t-set-packet-state-to-complete-on-a-nak.patch

   1 From bcd7c845fbfbafe03e320fbffcaa32417cfd5267 Mon Sep 17 00:00:00 2001
   2 From: Hans de Goede <hdegoede@redhat.com>
   3 Date: Mon, 3 Sep 2012 12:33:44 +0200
   4 Subject: [PATCH] usb-core: Don't set packet state to complete on a nak
   5
   6 This way the hcd can re-use the same packet to retry without needing
   7 to re-init it.
   8
   9 Signed-off-by: Hans de Goede <hdegoede@redhat.com>
  10 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
  11 (cherry picked from commit cc40997489260f405aecccd30d4626ceee862502)
  12
  13 Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
  14 ---
  15  hw/usb/core.c | 6 ++++--
  16  1 file changed, 4 insertions(+), 2 deletions(-)
  17
  18 diff --git a/hw/usb/core.c b/hw/usb/core.c
  19 index 2da38e7..be6d936 100644
  20 --- a/hw/usb/core.c
  21 +++ b/hw/usb/core.c
  22 @@ -399,8 +399,10 @@ int usb_handle_packet(USBDevice *dev, USBPacket *p)
  23               * otherwise packets can complete out of order!
  24               */
  25              assert(!p->ep->pipeline);
  26 -            p->result = ret;
  27 -            usb_packet_set_state(p, USB_PACKET_COMPLETE);
  28 +            if (ret != USB_RET_NAK) {
  29 +                p->result = ret;
  30 +                usb_packet_set_state(p, USB_PACKET_COMPLETE);
  31 +            }
  32          }
  33      } else {
  34          ret = USB_RET_ASYNC;
  35 --
  36 1.7.12.1
  37