From c13a9e61366cc3e28299d8faeb65e65c6e5964cf Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 28 Aug 2012 09:43:18 +0200 Subject: usb-core: Add a usb_ep_find_packet_by_id() helper function Signed-off-by: Hans de Goede Signed-off-by: Gerd Hoffmann --- hw/usb/core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'hw/usb/core.c') diff --git a/hw/usb/core.c b/hw/usb/core.c index be6d936881..fe431d02d9 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; +} -- cgit v1.2.1