port-qmi: allow users to release clients when no longer needed

src/mm-port-qmi.c

@@ -41,24 +41,38 @@ struct _MMPortQmiPrivate {
 
 /*****************************************************************************/
 
-QmiClient *
+static QmiClient *
-mm_port_qmi_peek_client (MMPortQmi *self,
+lookup_client (MMPortQmi     *self,
-                         QmiService service,
+               QmiService     service,
-                         MMPortQmiFlag flag)
+               MMPortQmiFlag  flag,
+               gboolean       steal)
 {
     GList *l;
 
     for (l = self->priv->services; l; l = g_list_next (l)) {
         ServiceInfo *info = l->data;
 
-        if (info->service == service &&
+        if (info->service == service && info->flag == flag) {
-            info->flag == flag)
+            QmiClient *found;
-            return info->client;
+
+            found = info->client;
+            if (steal)
+                self->priv->services = g_list_delete_link (self->priv->services, l);
+            return found;
+        }
     }
 
     return NULL;
 }
 
+QmiClient *
+mm_port_qmi_peek_client (MMPortQmi *self,
+                         QmiService service,
+                         MMPortQmiFlag flag)
+{
+    return lookup_client (self, service, flag, FALSE);
+}
+
 QmiClient *
 mm_port_qmi_get_client (MMPortQmi *self,
                         QmiService service,
@@ -82,6 +96,30 @@ mm_port_qmi_peek_device (MMPortQmi *self)
 
 /*****************************************************************************/
 
+void
+mm_port_qmi_release_client (MMPortQmi     *self,
+                            QmiService     service,
+                            MMPortQmiFlag  flag)
+{
+    QmiClient *client;
+
+    if (!self->priv->qmi_device)
+        return;
+
+    client = lookup_client (self, service, flag, TRUE);
+    if (!client)
+        return;
+
+    mm_obj_dbg (self, "explicitly releasing client for service '%s'...", qmi_service_get_string (service));
+    qmi_device_release_client (self->priv->qmi_device,
+                               client,
+                               QMI_DEVICE_RELEASE_CLIENT_FLAGS_RELEASE_CID,
+                               3, NULL, NULL, NULL);
+    g_object_unref (client);
+}
+
+/*****************************************************************************/
+
 typedef struct {
     ServiceInfo *info;
 } AllocateClientContext;

src/mm-port-qmi.h

@@ -80,6 +80,10 @@ gboolean mm_port_qmi_allocate_client_finish (MMPortQmi *self,
                                              GAsyncResult *res,
                                              GError **error);
 
+void     mm_port_qmi_release_client         (MMPortQmi     *self,
+                                             QmiService     service,
+                                             MMPortQmiFlag  flag);
+
 QmiClient *mm_port_qmi_peek_client (MMPortQmi *self,
                                     QmiService service,
                                     MMPortQmiFlag flag);