On 06/28/2012 04:46 AM, Uri Lublin wrote:
+#define INT_RETURN_IF_DIFFERENT(x, y) \
+ do { gint c,d; c=(x); d=(y); if(c-d) return (c-d); } while(0)
+
+static gint gudev_device_compare(GUdevDevice *a, GUdevDevice *b)
+{
+ GUdevDeviceInfo *ai, *bi;
+
+ g_return_val_if_fail(G_UDEV_DEVICE(a), 1);
+ g_return_val_if_fail(G_UDEV_DEVICE(b), -1);
+
+ ai = a->priv->udevinfo;
+ bi = b->priv->udevinfo;
+
+ INT_RETURN_IF_DIFFERENT(ai->bus, bi->bus);
+ INT_RETURN_IF_DIFFERENT(ai->addr, bi->addr);
+ INT_RETURN_IF_DIFFERENT(ai->vid, bi->vid);
+ INT_RETURN_IF_DIFFERENT(ai->pid, bi->pid);
Probably safer to only compare <bus, addr> and remove <pid, vid>
(in case pid, vid are not initialized).
+
+ return 0;
+}
+
+
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