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From 3c2f94fdc5e776ee66bccc704884f3b1b090b4c6 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Tue, 28 Aug 2012 09:43:18 +0200
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Subject: [PATCH] usb-core: Add a usb_ep_find_packet_by_id() helper function
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit c13a9e61366cc3e28299d8faeb65e65c6e5964cf)
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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---
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hw/usb.h | 2 ++
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hw/usb/core.c | 15 +++++++++++++++
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2 files changed, 17 insertions(+)
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diff --git a/hw/usb.h b/hw/usb.h
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index b8fceec..684e3f4 100644
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--- a/hw/usb.h
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+++ b/hw/usb.h
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@@ -377,6 +377,8 @@ void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep,
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uint16_t raw);
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int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep);
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void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled);
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+USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,
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+ uint64_t id);
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void usb_attach(USBPort *port);
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void usb_detach(USBPort *port);
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diff --git a/hw/usb/core.c b/hw/usb/core.c
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index be6d936..fe431d0 100644
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--- a/hw/usb/core.c
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+++ b/hw/usb/core.c
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@@ -726,3 +726,18 @@ void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled)
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struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
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uep->pipeline = enabled;
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}
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+
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+USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,
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+ uint64_t id)
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+{
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+ struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
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+ USBPacket *p;
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+
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+ while ((p = QTAILQ_FIRST(&uep->queue)) != NULL) {
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+ if (p->id == id) {
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+ return p;
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+ }
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+ }
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+
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+ return NULL;
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+}
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--
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1.7.12.1
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