From 34239c7bc972735391ca84283f8c8ad908dc61ef Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 15 Dec 2010 12:26:59 +0100 Subject: [PATCH] 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 --- hw/usb-hub.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/hw/usb-hub.c b/hw/usb-hub.c index 8837bd9efe..8a80151da2 100644 --- a/hw/usb-hub.c +++ b/hw/usb-hub.c @@ -245,6 +245,17 @@ static void usb_hub_detach(USBPort *port1) } } +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 void usb_hub_handle_destroy(USBDevice *dev) 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)