Merge "msm: mhi_dev: Handle AT/DUN control channel disconnect notification"

/* Copyright (c) 2015,2017-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015,2017-2019, 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

		uci_ctxt.at_ctrl_wq =

			create_singlethread_workqueue("mhi_at_ctrl_wq");

		INIT_WORK(&uci_ctxt.at_ctrl_work, mhi_uci_at_ctrl_read);

	} else if (cb_data->ctrl_info == MHI_STATE_DISCONNECTED) {

		if (uci_ctxt.at_ctrl_wq == NULL) {

			uci_log(UCI_DBG_VERBOSE,

				"Disconnect already processed for at ctrl channels\n");

			return;

		}

		destroy_workqueue(uci_ctxt.at_ctrl_wq);

		uci_ctxt.at_ctrl_wq = NULL;

		if (!(client->f_flags & O_SYNC))

			kfree(client->wreqs);

		rc = mhi_dev_close_channel(client->out_handle);

		if (rc)

			uci_log(UCI_DBG_INFO,

			"Failed to close channel %d ret %d\n",

			client->out_chan, rc);

		rc = mhi_dev_close_channel(client->in_handle);

		if (rc)

			uci_log(UCI_DBG_INFO,

			"Failed to close channel %d ret %d\n",

			client->in_chan, rc);

	}

}