From ab28ccc0c67f52d8966b8172108cb8a6f76e6d2a Mon Sep 17 00:00:00 2001
From: Gleb Natapov <gleb@redhat.com>
Date: Wed, 8 Dec 2010 13:35:02 +0200
Subject: Record which USBDevice USBPort belongs too.

Ports on root hub will have NULL here. This is needed to reconstruct
path from device to its root hub to build device path.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
---
 hw/usb-bus.c  | 3 ++-
 hw/usb-hub.c  | 2 +-
 hw/usb-musb.c | 2 +-
 hw/usb-ohci.c | 2 +-
 hw/usb-uhci.c | 2 +-
 hw/usb.h      | 3 ++-
 6 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index b692503..256b881 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -110,11 +110,12 @@ USBDevice *usb_create_simple(USBBus *bus, const char *name)
 }
 
 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
-                       usb_attachfn attach)
+                       USBDevice *pdev, usb_attachfn attach)
 {
     port->opaque = opaque;
     port->index = index;
     port->attach = attach;
+    port->pdev = pdev;
     QTAILQ_INSERT_TAIL(&bus->free, port, next);
     bus->nfree++;
 }
diff --git a/hw/usb-hub.c b/hw/usb-hub.c
index 8e3a96b..8a3f829 100644
--- a/hw/usb-hub.c
+++ b/hw/usb-hub.c
@@ -535,7 +535,7 @@ static int usb_hub_initfn(USBDevice *dev)
     for (i = 0; i < s->nb_ports; i++) {
         port = &s->ports[i];
         usb_register_port(usb_bus_from_device(dev),
-                          &port->port, s, i, usb_hub_attach);
+                          &port->port, s, i, &s->dev, usb_hub_attach);
         port->wPortStatus = PORT_STAT_POWER;
         port->wPortChange = 0;
     }
diff --git a/hw/usb-musb.c b/hw/usb-musb.c
index 7f15842..9efe7a6 100644
--- a/hw/usb-musb.c
+++ b/hw/usb-musb.c
@@ -343,7 +343,7 @@ struct MUSBState {
     }
 
     usb_bus_new(&s->bus, NULL /* FIXME */);
-    usb_register_port(&s->bus, &s->port, s, 0, musb_attach);
+    usb_register_port(&s->bus, &s->port, s, 0, NULL, musb_attach);
 
     return s;
 }
diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c
index 8eb4a1e..240e840 100644
--- a/hw/usb-ohci.c
+++ b/hw/usb-ohci.c
@@ -1699,7 +1699,7 @@ static void usb_ohci_init(OHCIState *ohci, DeviceState *dev,
     usb_bus_new(&ohci->bus, dev);
     ohci->num_ports = num_ports;
     for (i = 0; i < num_ports; i++) {
-        usb_register_port(&ohci->bus, &ohci->rhport[i].port, ohci, i, ohci_attach);
+        usb_register_port(&ohci->bus, &ohci->rhport[i].port, ohci, i, NULL, ohci_attach);
     }
 
     ohci->async_td = 0;
diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index 1d83400..b9b822f 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -1115,7 +1115,7 @@ static int usb_uhci_common_initfn(UHCIState *s)
 
     usb_bus_new(&s->bus, &s->dev.qdev);
     for(i = 0; i < NB_PORTS; i++) {
-        usb_register_port(&s->bus, &s->ports[i].port, s, i, uhci_attach);
+        usb_register_port(&s->bus, &s->ports[i].port, s, i, NULL, uhci_attach);
     }
     s->frame_timer = qemu_new_timer(vm_clock, uhci_frame_timer, s);
     s->expire_time = qemu_get_clock(vm_clock) +
diff --git a/hw/usb.h b/hw/usb.h
index 00d2802..0b32d77 100644
--- a/hw/usb.h
+++ b/hw/usb.h
@@ -203,6 +203,7 @@ struct USBPort {
     USBDevice *dev;
     usb_attachfn attach;
     void *opaque;
+    USBDevice *pdev;
     int index; /* internal port index, may be used with the opaque */
     QTAILQ_ENTRY(USBPort) next;
 };
@@ -312,7 +313,7 @@ USBDevice *usb_create(USBBus *bus, const char *name);
 USBDevice *usb_create_simple(USBBus *bus, const char *name);
 USBDevice *usbdevice_create(const char *cmdline);
 void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
-                       usb_attachfn attach);
+                       USBDevice *pdev, usb_attachfn attach);
 void usb_unregister_port(USBBus *bus, USBPort *port);
 int usb_device_attach(USBDevice *dev);
 int usb_device_detach(USBDevice *dev);
-- 
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