diff --git a/lib/libusb/libusb.h b/lib/libusb/libusb.h
--- a/lib/libusb/libusb.h
+++ b/lib/libusb/libusb.h
@@ -594,6 +594,8 @@
 
 int	libusb_hotplug_register_callback(libusb_context *ctx, libusb_hotplug_event events, libusb_hotplug_flag flags, int vendor_id, int product_id, int dev_class, libusb_hotplug_callback_fn cb_fn, void *user_data, libusb_hotplug_callback_handle *handle);
 void	libusb_hotplug_deregister_callback(libusb_context *ctx, libusb_hotplug_callback_handle handle);
+void   *libusb_hotplug_get_user_data(struct libusb_context *ctx,
+    libusb_hotplug_callback_handle callback_handle);
 
 /* Streams support */
 
diff --git a/lib/libusb/libusb.3 b/lib/libusb/libusb.3
--- a/lib/libusb/libusb.3
+++ b/lib/libusb/libusb.3
@@ -781,6 +781,11 @@
 This function releases the memory storage in
 .Fa pollfds ,
 and is safe to call when the argument is NULL.
+.Pp void *
+.Fn libusb_hotplug_get_user_data "struct libusb_context *ctx" "libusb_hotplug_callback_handle callback_handle"
+This function returns the user data from the opaque
+.Fa callback_handle ,
+or returns NULL if no matching handle is found.
 .Sh LIBUSB VERSION 0.1 COMPATIBILITY
 The library is also compliant with LibUSB version 0.1.12.
 .Pp
diff --git a/lib/libusb/libusb10_hotplug.c b/lib/libusb/libusb10_hotplug.c
--- a/lib/libusb/libusb10_hotplug.c
+++ b/lib/libusb/libusb10_hotplug.c
@@ -414,3 +414,21 @@
 
 	free(handle);
 }
+
+void *
+libusb_hotplug_get_user_data(struct libusb_context *ctx,
+    libusb_hotplug_callback_handle callback_handle)
+{
+	libusb_hotplug_callback_handle handle;
+
+	ctx = GET_CONTEXT(ctx);
+
+	HOTPLUG_LOCK(ctx);
+	TAILQ_FOREACH(handle, &ctx->hotplug_cbh, entry) {
+		if (handle == callback_handle)
+			break;
+	}
+	HOTPLUG_UNLOCK(ctx);
+
+	return (handle);
+}