[gnome-multi-writer] trivial: Save a reference to the GUsbDevice in the GmwDevice

[Richard Hughes <rhughes src gnome org>]

commit b298fdd3c23b2e5efbeeae6db0db06ce7e6085e1
Author: Richard Hughes <richard hughsie com>
Date:   Wed Jan 21 17:54:21 2015 +0000

    trivial: Save a reference to the GUsbDevice in the GmwDevice
    
    This allows us to query the device for the quirk data after loading.

 src/gmw-device.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/src/gmw-device.c b/src/gmw-device.c
index b56044a..e05cb5b 100644
--- a/src/gmw-device.c
+++ b/src/gmw-device.c
@@ -32,10 +32,10 @@ typedef struct {
        GMutex                   mutex;         /* mutex for the device */
        GmwDeviceState           state;         /* the #GmwDeviceState, e.g. %GMW_DEVICE_STATE_WRITE */
        UDisksBlock             *udisks_block;  /* the #UDisksBlock device */
+       GUsbDevice              *usb_device;    /* the #GUsbDevice */
        gchar                   *block_path;    /* path to block device, e.g. /dev/sdb */
        gchar                   *hub_id;        /* hub connection */
        gchar                   *hub_label;     /* hub label */
-       guint8                   hub_root;      /* root hub number */
        gchar                   *name;          /* name, e.g. "Hughski ColorHug" */
        gchar                   *object_path;   /* UDisks object path */
        gchar                   *order_display; /* key for display sorting */
@@ -123,7 +123,9 @@ gmw_device_get_hub_root (GmwDevice *device)
 {
        GmwDevicePrivate *priv = gmw_device_get_instance_private (device);
        g_return_val_if_fail (GMW_IS_DEVICE (device), 0);
-       return priv->hub_root;
+       if (priv->usb_device == NULL)
+               return 0x00;
+       return g_usb_device_get_bus (priv->usb_device);
 }
 
 /**
@@ -698,7 +700,7 @@ gmw_device_set_usb_device (GmwDevice *device, GUsbDevice *usb_device)
        g_return_if_fail (GMW_IS_DEVICE (device));
 
        /* get the USB root hub number */
-       priv->hub_root = g_usb_device_get_bus (usb_device);
+       priv->usb_device = g_object_ref (usb_device);
 
        /* is this a USB hub already */
        if (g_usb_device_get_device_class (usb_device) == 0x09) {
@@ -809,6 +811,8 @@ gmw_device_finalize (GObject *object)
        g_mutex_clear (&priv->mutex);
        if (priv->error != NULL)
                g_error_free (priv->error);
+       if (priv->usb_device != NULL)
+               g_object_unref (priv->usb_device);
        g_free (priv->block_path);
        g_free (priv->hub_id);
        g_free (priv->hub_label);