From 32dac2f67735efa1bbfcd7c5563d5cbc980c6770 Mon Sep 17 00:00:00 2001
From: Alexander Couzens <lynxis@fe80.eu>
Date: Tue, 25 Jul 2017 20:36:00 +0200
Subject: [PATCH 11/17] qmimodem: sync the modem on enable

The qmi sync call release all previous resources.
---
 drivers/qmimodem/qmi.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 drivers/qmimodem/qmi.h |  5 ++++-
 plugins/gobi.c         | 12 +++++++++++-
 3 files changed, 62 insertions(+), 2 deletions(-)

Index: ofono-1.21/drivers/qmimodem/qmi.c
===================================================================
--- ofono-1.21.orig/drivers/qmimodem/qmi.c
+++ ofono-1.21/drivers/qmimodem/qmi.c
@@ -1323,6 +1323,53 @@ bool qmi_device_shutdown(struct qmi_devi
 	return true;
 }
 
+struct sync_data {
+	qmi_sync_func_t func;
+	void *user_data;
+};
+
+static void qmi_device_sync_callback(uint16_t message, uint16_t length,
+				     const void *buffer, void *user_data)
+{
+	struct sync_data *data = user_data;
+
+	if(data->func)
+		data->func(data->user_data);
+
+	g_free(data);
+}
+
+/* sync will release all previous clients */
+bool qmi_device_sync(struct qmi_device *device,
+		     qmi_sync_func_t func, void *user_data)
+{
+	struct qmi_request *req;
+	struct qmi_control_hdr *hdr;
+	struct sync_data *func_data;
+
+	if (!device)
+		return false;
+
+	func_data = g_new0(struct sync_data, 1);
+	func_data->func = func;
+	func_data->user_data = user_data;
+
+	req = __request_alloc(QMI_SERVICE_CONTROL, 0x00,
+			QMI_CTL_SYNC, QMI_CONTROL_HDR_SIZE,
+			NULL, 0,
+			qmi_device_sync_callback, func_data, (void **) &hdr);
+
+	if (device->next_control_tid < 1)
+		device->next_control_tid = 1;
+
+	hdr->type = 0x00;
+	hdr->transaction = device->next_control_tid++;
+
+	__request_submit(device, req, hdr->transaction);
+
+	return true;
+}
+
 static bool get_device_file_name(struct qmi_device *device,
 					char *file_name, int size)
 {
Index: ofono-1.21/drivers/qmimodem/qmi.h
===================================================================
--- ofono-1.21.orig/drivers/qmimodem/qmi.h
+++ ofono-1.21/drivers/qmimodem/qmi.h
@@ -76,7 +76,7 @@ typedef void (*qmi_destroy_func_t)(void
 struct qmi_device;
 
 typedef void (*qmi_debug_func_t)(const char *str, void *user_data);
-
+typedef void (*qmi_sync_func_t)(void *user_data);
 typedef void (*qmi_shutdown_func_t)(void *user_data);
 typedef void (*qmi_discover_func_t)(uint8_t count,
 			const struct qmi_version *list, void *user_data);
@@ -96,6 +96,9 @@ bool qmi_device_discover(struct qmi_devi
 bool qmi_device_shutdown(struct qmi_device *device, qmi_shutdown_func_t func,
 				void *user_data, qmi_destroy_func_t destroy);
 
+bool qmi_device_sync(struct qmi_device *device,
+		     qmi_sync_func_t func, void *user_data);
+
 enum qmi_device_expected_data_format qmi_device_get_expected_data_format(
 						struct qmi_device *device);
 bool qmi_device_set_expected_data_format(struct qmi_device *device,
Index: ofono-1.21/plugins/gobi.c
===================================================================
--- ofono-1.21.orig/plugins/gobi.c
+++ ofono-1.21/plugins/gobi.c
@@ -320,6 +320,16 @@ static void discover_cb(uint8_t count, c
 						create_dms_cb, modem, NULL);
 }
 
+static void sync_cb(void *user_data)
+{
+	struct ofono_modem *modem = user_data;
+	struct gobi_data *data = ofono_modem_get_data(modem);
+
+	DBG("modem in sync");
+
+	qmi_device_discover(data->device, discover_cb, modem, NULL);
+}
+
 static int gobi_enable(struct ofono_modem *modem)
 {
 	struct gobi_data *data = ofono_modem_get_data(modem);
@@ -347,7 +357,7 @@ static int gobi_enable(struct ofono_mode
 
 	qmi_device_set_close_on_unref(data->device, true);
 
-	qmi_device_discover(data->device, discover_cb, modem, NULL);
+	qmi_device_sync(data->device, sync_cb, modem);
 
 	return -EINPROGRESS;
 }