From 3eb27564efcb57f965012db9bc39f5d44d369240 Mon Sep 17 00:00:00 2001
From: Aleksander Morgado <aleksander@aleksander.es>
Date: Mon, 5 Aug 2019 16:30:06 +0200
Subject: [PATCH] modem-manager: add counterpart GUID for the DW5821e

The DW5821e in modem mode uses the 0x81D7 PID, but when it boots in
fastboot mode it uses the 0x81D6 PID. The upgrade procedure was able
to automatically match these two devices because they both shared the
very generic per-VID (0x413C) GUID, but this is no longer operational
since commit 8ef139faba, as the very generic GUIDs have been removed
for matching purposes.

So, define a quirk for the DW5821e, in order to add a counterpart
GUID to make device matching work properly again.

Fixes https://github.com/hughsie/fwupd/issues/1271
---
 plugins/modem-manager/meson.build         |  4 ++++
 plugins/modem-manager/modem-manager.quirk | 11 +++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 plugins/modem-manager/modem-manager.quirk

diff --git a/plugins/modem-manager/meson.build b/plugins/modem-manager/meson.build
index dd686ba39..ce1d3c661 100644
--- a/plugins/modem-manager/meson.build
+++ b/plugins/modem-manager/meson.build
@@ -1,5 +1,9 @@
 cargs = ['-DG_LOG_DOMAIN="FuPluginMm"']
 
+install_data(['modem-manager.quirk'],
+  install_dir: join_paths(datadir, 'fwupd', 'quirks.d')
+)
+
 shared_module('fu_plugin_modem_manager',
   fu_hash,
   sources : [
diff --git a/plugins/modem-manager/modem-manager.quirk b/plugins/modem-manager/modem-manager.quirk
new file mode 100644
index 000000000..e73ff4bd7
--- /dev/null
+++ b/plugins/modem-manager/modem-manager.quirk
@@ -0,0 +1,11 @@
+
+# DW5821e
+[DeviceInstanceId=USB\VID_413C&PID_81D7]
+Summary = Dell DW5821e LTE modem
+CounterpartGuid = USB\VID_413C&PID_81D6
+
+# DW5821e in fastboot mode
+[DeviceInstanceId=USB\VID_413C&PID_81D6]
+Summary = Dell DW5821e LTE modem (fastboot)
+CounterpartGuid = USB\VID_413C&PID_81D7
+