usb: hub: remote wakeup support.
This patch makes the usb hub handle remote wakeup requests from devices
properly by updating the port status register and forwarding the wakeup
to the upstream port.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
diff --git a/hw/usb-hub.c b/hw/usb-hub.c
index 8837bd9..8a80151 100644
--- a/hw/usb-hub.c
+++ b/hw/usb-hub.c
@@ -245,6 +245,17 @@
}
}
+static void usb_hub_wakeup(USBDevice *dev)
+{
+ USBHubState *s = dev->port->opaque;
+ USBHubPort *port = &s->ports[dev->port->index];
+
+ if (port->wPortStatus & PORT_STAT_SUSPEND) {
+ port->wPortChange |= PORT_STAT_C_SUSPEND;
+ usb_wakeup(&s->dev);
+ }
+}
+
static void usb_hub_handle_reset(USBDevice *dev)
{
/* XXX: do it */
@@ -502,6 +513,7 @@
static USBPortOps usb_hub_port_ops = {
.attach = usb_hub_attach,
.detach = usb_hub_detach,
+ .wakeup = usb_hub_wakeup,
};
static int usb_hub_initfn(USBDevice *dev)
