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eud: Set pdev->id value to 0 and add set_mctrl() API

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pdev->id is needed to reference port with serial core framework.
Also serial core framework assumes that set_mctrl() ops is must
to support. Hence add set_mctrl() API to avoid null pointer
related crash within serial core framework.

Change-Id: Ida4ec2622232b822f1100e9c4ce0e8d3bd0d29c9
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
This commit is contained in:
Mayank Rana 2020-01-28 15:36:27 -08:00
parent 43ee86678a
commit 78cab5d31b
1 changed files with 8 additions and 1 deletions
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9
drivers/soc/qcom/eud.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only // SPDX-License-Identifier: GPL-2.0-only
/* /*
* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved. * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
*/ */
#include <linux/kernel.h> #include <linux/kernel.h>
@ -286,6 +286,11 @@ static unsigned int eud_tx_empty(struct uart_port *port)
return 0; return 0;
} }
static void eud_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
/* Nothing to set */
}
static void eud_stop_tx(struct uart_port *port) static void eud_stop_tx(struct uart_port *port)
{ {
/* Disable Tx interrupt */ /* Disable Tx interrupt */
@ -365,6 +370,7 @@ static int eud_verify_port(struct uart_port *port,
/* serial functions supported */ /* serial functions supported */
static const struct uart_ops eud_uart_ops = { static const struct uart_ops eud_uart_ops = {
.tx_empty = eud_tx_empty, .tx_empty = eud_tx_empty,
.set_mctrl = eud_set_mctrl,
.stop_tx = eud_stop_tx, .stop_tx = eud_stop_tx,
.start_tx = eud_start_tx, .start_tx = eud_start_tx,
.stop_rx = eud_stop_rx, .stop_rx = eud_stop_rx,
@ -593,6 +599,7 @@ static int msm_eud_probe(struct platform_device *pdev)
INIT_WORK(&chip->eud_work, eud_event_notifier); INIT_WORK(&chip->eud_work, eud_event_notifier);
pdev->id = 0;
port = &chip->port; port = &chip->port;
port->line = pdev->id; port->line = pdev->id;
port->type = PORT_EUD_UART; port->type = PORT_EUD_UART;