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Commit afb37345 authored by Siva Kumar Akkireddi's avatar Siva Kumar Akkireddi
Browse files

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



Destroy the workqueue and close the channels upon receiving the
channel disconnect notification.

Change-Id: Icd8d3cd578178b1fa27f55115b9914a30cbf889e
Signed-off-by: default avatarSiva Kumar Akkireddi <sivaa@codeaurora.org>
parent 03e6dc12

drivers/platform/msm/mhi_dev/mhi_uci.c

+21 −1
Original line number Diff line number Diff line 
/* 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
@@ -1594,6 +1594,26 @@ static void mhi_uci_at_ctrl_client_cb(struct mhi_dev_client_cb_data *cb_data) 
		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);

	}

}