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serial: ar933x: Remove unneeded static structure

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In case that no RTS GPIO is available do not use a dedicated nullified
serial_rs485 struct to disable RS485 support, but simply delete the
SER_RS485_ENABLED flag in the ports rs485_supported struct.
This make the structure superfluous and it can be removed.

Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Link: https://lore.kernel.org/r/20240407002709.16224-5-l.sanfilippo@kunbus.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lino Sanfilippo 2024-04-07 02:27:09 +02:00 committed by Greg Kroah-Hartman
parent 384fa8647d
commit fff4a5d560
1 changed files with 1 additions and 2 deletions
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3
drivers/tty/serial/ar933x_uart.c
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@ -692,7 +692,6 @@ static struct uart_driver ar933x_uart_driver = {
.cons = NULL, /* filled in runtime */
};
static const struct serial_rs485 ar933x_no_rs485 = {};
static const struct serial_rs485 ar933x_rs485_supported = {
.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND,
};
@ -788,7 +787,7 @@ static int ar933x_uart_probe(struct platform_device *pdev)
up->rts_gpiod = mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS);
if (!up->rts_gpiod) {
port->rs485_supported = ar933x_no_rs485;
port->rs485_supported.flags &= ~SER_RS485_ENABLED;
if (port->rs485.flags & SER_RS485_ENABLED) {
dev_err(&pdev->dev, "lacking rts-gpio, disabling RS485\n");
port->rs485.flags &= ~SER_RS485_ENABLED;