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usb: Add USB_RET_ADD_TO_QUEUE packet result code

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This can be used by usb-device code which wishes to process an entire endpoint
queue at once, to do this the usb-device code returns USB_RET_ADD_TO_QUEUE
from its handle_data class method and defines a flush_ep_queue class method
to call when the hcd is done queuing up packets.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-10-24 18:14:07 +02:00 • committed by Gerd Hoffmann
parent d0ff81b871
commit 36dfe324fd
8 changed files with 51 additions and 11 deletions
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4
hw/usb/core.c
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@ -393,6 +393,10 @@ int usb_handle_packet(USBDevice *dev, USBPacket *p)
if (ret == USB_RET_ASYNC) {
usb_packet_set_state(p, USB_PACKET_ASYNC);
QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue);
} else if (ret == USB_RET_ADD_TO_QUEUE) {
usb_packet_set_state(p, USB_PACKET_QUEUED);
QTAILQ_INSERT_TAIL(&p->ep->queue, p, queue);
ret = USB_RET_ASYNC;
} else {
/*
* When pipelining is enabled usb-devices must always return async,