From c1442b3a7fedd8b713136cd2598a210549508cdf Mon Sep 17 00:00:00 2001
From: Aleksander Morgado <aleksander@aleksander.es>
Date: Thu, 27 Oct 2016 22:35:17 +0200
Subject: libqmi-glib,device: make sure transaction is removed from table on
 early errors

---
 src/libqmi-glib/qmi-device.c | 44 ++++++++++++++++++++++++++++----------------
 1 file changed, 28 insertions(+), 16 deletions(-)

diff --git a/src/libqmi-glib/qmi-device.c b/src/libqmi-glib/qmi-device.c
index cf2dfd0..c2f41c6 100644
--- a/src/libqmi-glib/qmi-device.c
+++ b/src/libqmi-glib/qmi-device.c
@@ -2754,6 +2754,23 @@ qmi_device_command_finish (QmiDevice *self,
                                 G_SIMPLE_ASYNC_RESULT (res)));
 }
 
+static void
+transaction_early_error (QmiDevice   *self,
+                         Transaction *tr,
+                         gboolean     stored,
+                         GError      *error)
+{
+    g_assert (error);
+
+    if (stored) {
+        /* Match transaction so that we remove it from our tracking table */
+        tr = device_match_transaction (self, tr->message);
+        g_assert (tr);
+    }
+    transaction_complete_and_free (tr, NULL, error);
+    g_error_free (error);
+}
+
 /**
  * qmi_device_command:
  * @self: a #QmiDevice.
@@ -2807,8 +2824,7 @@ qmi_device_command (QmiDevice *self,
             error = g_error_new (QMI_CORE_ERROR,
                                  QMI_CORE_ERROR_WRONG_STATE,
                                  "Device must be open to send commands");
-            transaction_complete_and_free (tr, NULL, error);
-            g_error_free (error);
+            transaction_early_error (self, tr, FALSE, error);
             return;
         }
     }
@@ -2820,8 +2836,7 @@ qmi_device_command (QmiDevice *self,
                              QMI_CORE_ERROR_FAILED,
                              "Cannot send message in service '%s' without a CID",
                              qmi_service_get_string (qmi_message_get_service (message)));
-        transaction_complete_and_free (tr, NULL, error);
-        g_error_free (error);
+        transaction_early_error (self, tr, FALSE, error);
         return;
     }
 
@@ -2829,8 +2844,7 @@ qmi_device_command (QmiDevice *self,
      * (only applicable if we did version info check when opening) */
     if (!check_message_supported (self, message, &error)) {
         g_prefix_error (&error, "Cannot send message: ");
-        transaction_complete_and_free (tr, NULL, error);
-        g_error_free (error);
+        transaction_early_error (self, tr, FALSE, error);
         return;
     }
 
@@ -2838,8 +2852,7 @@ qmi_device_command (QmiDevice *self,
     raw_message = qmi_message_get_raw (message, &raw_message_len, &error);
     if (!raw_message) {
         g_prefix_error (&error, "Cannot get raw message: ");
-        transaction_complete_and_free (tr, NULL, error);
-        g_error_free (error);
+        transaction_early_error (self, tr, FALSE, error);
         return;
     }
 
@@ -2854,11 +2867,13 @@ qmi_device_command (QmiDevice *self,
     /* Setup context to match response */
     if (!device_store_transaction (self, tr, transaction_timeout, &error)) {
         g_prefix_error (&error, "Cannot store transaction: ");
-        transaction_complete_and_free (tr, NULL, error);
-        g_error_free (error);
+        transaction_early_error (self, tr, FALSE, error);
         return;
     }
 
+    /* From now on, if we want to complete the transaction with an early error,
+     *  it needs to be removed from the tracking table as well. */
+
     if (qmi_utils_get_traces_enabled ()) {
         gchar *printable;
 
@@ -2891,8 +2906,7 @@ qmi_device_command (QmiDevice *self,
                            cancellable,
                            &error)) {
             g_prefix_error (&error, "Cannot create MBIM command: ");
-            transaction_complete_and_free (tr, NULL, error);
-            g_error_free (error);
+            transaction_early_error (self, tr, TRUE, error);
         }
         return;
     }
@@ -2905,10 +2919,8 @@ qmi_device_command (QmiDevice *self,
                                     NULL, /* cancellable */
                                     &error)) {
         g_prefix_error (&error, "Cannot write message: ");
-        /* Match transaction so that we remove it from our tracking table */
-        tr = device_match_transaction (self, message);
-        transaction_complete_and_free (tr, NULL, error);
-        g_error_free (error);
+        transaction_early_error (self, tr, TRUE, error);
+        return;
     }
 
     /* Flush explicitly if correctly written */
-- 
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