From 3c2f94fdc5e776ee66bccc704884f3b1b090b4c6 Mon Sep 17 00:00:00 2001

From: Hans de Goede <hdegoede@redhat.com>

Date: Tue, 28 Aug 2012 09:43:18 +0200

Subject: [PATCH] usb-core: Add a usb_ep_find_packet_by_id() helper function

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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

(cherry picked from commit c13a9e61366cc3e28299d8faeb65e65c6e5964cf)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

---

 hw/usb.h      |  2 ++

 hw/usb/core.c | 15 +++++++++++++++

 2 files changed, 17 insertions(+)

diff --git a/hw/usb.h b/hw/usb.h

index b8fceec..684e3f4 100644

--- a/hw/usb.h

+++ b/hw/usb.h

@@ -377,6 +377,8 @@ void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep,

                                 uint16_t raw);

 int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep);

 void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled);

+USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,

+                                    uint64_t id);

 void usb_attach(USBPort *port);

 void usb_detach(USBPort *port);

diff --git a/hw/usb/core.c b/hw/usb/core.c

index be6d936..fe431d0 100644

--- a/hw/usb/core.c

+++ b/hw/usb/core.c

@@ -726,3 +726,18 @@ void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled)

     struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);

     uep->pipeline = enabled;

 }

+

+USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,

+                                    uint64_t id)

+{

+    struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);

+    USBPacket *p;

+

+    while ((p = QTAILQ_FIRST(&uep->queue)) != NULL) {

+        if (p->id == id) {

+            return p;

+        }

+    }

+

+    return NULL;

+}

-- 

1.7.12.1