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: [PATCH] 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 b692503f5..256b88157 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 8e3a96b81..8a3f829c9 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 7f1584296..9efe7a634 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 8eb4a1e11..240e8409a 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 1d834004b..b9b822fcb 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 00d280220..0b32d77e6 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);
-- 
2.39.5