motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-11 03:24:58 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

usb: queue can have async packets

Browse source 
This can happen today in case the ->complete() callback queues up the
next packet.  Also we'll support pipelining soon, which allows to have
multiple packets per queue in flight (aka ASYNC) state.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-02-28 15:36:06 +01:00
parent 7c308b7e38
commit eb9d4673e3
1 changed files with 3 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
hw/usb.c
View file

@ -356,6 +356,9 @@ void usb_packet_complete(USBDevice *dev, USBPacket *p)
while (!QTAILQ_EMPTY(&ep->queue)) { while (!QTAILQ_EMPTY(&ep->queue)) {
p = QTAILQ_FIRST(&ep->queue); p = QTAILQ_FIRST(&ep->queue);
if (p->state == USB_PACKET_ASYNC) {
break;
}
assert(p->state == USB_PACKET_QUEUED); assert(p->state == USB_PACKET_QUEUED);
ret = usb_process_one(p); ret = usb_process_one(p);
if (ret == USB_RET_ASYNC) { if (ret == USB_RET_ASYNC) {