From 1058c1c69dba15bd9fc7cf3da2c191cc29aa1ddb Mon Sep 17 00:00:00 2001
From: Daniele Palmas <dnlplm@gmail.com>
Date: Mon, 25 Oct 2021 09:34:04 +0200
Subject: telit: avoid sim hot swap procedure if #QSS is not supported

---
 plugins/telit/mm-broadband-modem-telit.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

(limited to 'plugins')

diff --git a/plugins/telit/mm-broadband-modem-telit.c b/plugins/telit/mm-broadband-modem-telit.c
index bd92d076..3ffd7cc4 100644
--- a/plugins/telit/mm-broadband-modem-telit.c
+++ b/plugins/telit/mm-broadband-modem-telit.c
@@ -606,6 +606,27 @@ next_step:
     qss_setup_step (task);
 }
 
+static void
+telit_qss_support_ready (MMBaseModem *self,
+                         GAsyncResult *res,
+                         GTask *task)
+{
+    GError *error = NULL;
+    QssSetupContext *ctx;
+
+    ctx = g_task_get_task_data (task);
+
+    if (!mm_base_modem_at_command_finish (self, res, &error)) {
+        mm_obj_dbg (self, "#QSS command unsupported: '%s'", error->message);
+        g_task_return_error (task, error);
+        g_object_unref (task);
+        return;
+    }
+
+    ctx->step++;
+    qss_setup_step (task);
+}
+
 static void
 qss_setup_step (GTask *task)
 {
@@ -617,8 +638,13 @@ qss_setup_step (GTask *task)
 
     switch (ctx->step) {
         case QSS_SETUP_STEP_FIRST:
-            ctx->step++;
-            /* fall through */
+            mm_base_modem_at_command (MM_BASE_MODEM (self),
+                                      "#QSS=?",
+                                      3,
+                                      TRUE,
+                                      (GAsyncReadyCallback) telit_qss_support_ready,
+                                      task);
+            return;
         case QSS_SETUP_STEP_QUERY:
             mm_base_modem_at_command (MM_BASE_MODEM (self),
                                       "#QSS?",
-- 
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