Merge "icnss: Add support for graceful shutdown"

/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

	return ret;

}

static int wlfw_send_modem_shutdown_msg(void)

{

	int ret;

	struct wlfw_shutdown_req_msg_v01 req;

	struct wlfw_shutdown_resp_msg_v01 resp;

	struct msg_desc req_desc, resp_desc;

	if (!penv || !penv->wlfw_clnt)

		return -ENODEV;

	icnss_pr_dbg("Sending modem shutdown request, state: 0x%lx\n",

		     penv->state);

	memset(&req, 0, sizeof(req));

	memset(&resp, 0, sizeof(resp));

	req.shutdown_valid = 1;

	req.shutdown = 1;

	req_desc.max_msg_len = WLFW_SHUTDOWN_REQ_MSG_V01_MAX_MSG_LEN;

	req_desc.msg_id = QMI_WLFW_SHUTDOWN_REQ_V01;

	req_desc.ei_array = wlfw_shutdown_req_msg_v01_ei;

	resp_desc.max_msg_len = WLFW_SHUTDOWN_RESP_MSG_V01_MAX_MSG_LEN;

	resp_desc.msg_id = QMI_WLFW_SHUTDOWN_RESP_V01;

	resp_desc.ei_array = wlfw_shutdown_resp_msg_v01_ei;

	ret = qmi_send_req_wait(penv->wlfw_clnt, &req_desc, &req, sizeof(req),

				&resp_desc, &resp, sizeof(resp),

				WLFW_TIMEOUT_MS);

	if (ret < 0) {

		icnss_pr_err("Send modem shutdown req failed, ret: %d\n", ret);

		goto out;

	}

	if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {

		icnss_pr_err("QMI modem shutdown request rejected result:%d error:%d\n",

			     resp.resp.result, resp.resp.error);

		ret = -resp.resp.result;

		goto out;

	}

	icnss_pr_dbg("modem shutdown request sent successfully, state: 0x%lx\n",

		     penv->state);

	return 0;

out:

	return ret;

}

static int wlfw_athdiag_read_send_sync_msg(struct icnss_priv *priv,

					   uint32_t offset, uint32_t mem_type,

					   uint32_t data_len, uint8_t *data)

	if (code != SUBSYS_BEFORE_SHUTDOWN)

		return NOTIFY_OK;

	if (code == SUBSYS_BEFORE_SHUTDOWN && !notif->crashed) {

		ret = wlfw_send_modem_shutdown_msg();

		if (ret)

		icnss_pr_dbg("Fail to send modem shutdown Indication %d\n",

		ret);

	}

	if (test_bit(ICNSS_PDR_REGISTERED, &priv->state)) {

		set_bit(ICNSS_FW_DOWN, &priv->state);

		icnss_ignore_qmi_timeout(true);