From 028a0e5c0b9518dfa6b3da5d91584b4117921ecd Mon Sep 17 00:00:00 2001
From: KraPete <86825564+KraPete@users.noreply.github.com>
Date: Wed, 4 Dec 2024 16:53:39 +0500
Subject: [PATCH] Reattach modem to packet service (#167)

---
 debian/changelog    |  6 ++++++
 utils/bin/wb-gsm-mm | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index 0e34eae..e83f4ce 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+wb-utils (4.25.2) stable; urgency=medium
+
+  * Reattach modem to packet service if it was detached
+
+ -- Petr Krasnoshchekov <petr.krasnoshchekov@wirenboard.com>  Fri, 29 Nov 2024 19:01:54 +0500
+
 wb-utils (4.25.1) stable; urgency=medium
 
   * install_update: trigger FR from factoryreset.original.fit only if single-rootfs is not supported here
diff --git a/utils/bin/wb-gsm-mm b/utils/bin/wb-gsm-mm
index e38d34e..64bbae1 100755
--- a/utils/bin/wb-gsm-mm
+++ b/utils/bin/wb-gsm-mm
@@ -1,5 +1,15 @@
 #!/bin/bash
 
+reattach_modem_if_needed() {
+    if mmcli -m wbc -K | grep -qE "modem\.generic\.state.*(enabled|registered)" && \
+       mmcli -m wbc -K | grep -q "modem\.3gpp\.packet-service-state.*detached";
+    then
+        mmcli -m wbc --3gpp-set-packet-service-state=detached
+        sleep 10
+        mmcli -m wbc --3gpp-set-packet-service-state=attached
+    fi
+}
+
 watchdog() {
     sleep $(($WATCHDOG_USEC / 6000000))
     while true; do
@@ -10,6 +20,7 @@ watchdog() {
                     echo "ModemManager is running, but modem is not found"
                 else
                     systemd-notify WATCHDOG=1
+                    reattach_modem_if_needed
                 fi
             else
                 systemd-notify WATCHDOG=1