From: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx>
RS485 is not possible without an RTS GPIO regardless of whether RS485 is
enabled at boot time or not. So correct the concerning check in the probe()
function.
Fixes: e849145e1fdd ("serial: ar933x: Fill in rs485_supported")
Signed-off-by: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx>
---
drivers/tty/serial/ar933x_uart.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index f931ecbc0bc0..f7b4638d69e5 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -798,11 +798,12 @@ static int ar933x_uart_probe(struct platform_device *pdev)
up->rts_gpiod = mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS);
- if ((port->rs485.flags & SER_RS485_ENABLED) &&
- !up->rts_gpiod) {
- dev_err(&pdev->dev, "lacking rts-gpio, disabling RS485\n");
- port->rs485.flags &= ~SER_RS485_ENABLED;
+ if (!up->rts_gpiod) {
port->rs485_supported = ar933x_no_rs485;
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+ dev_err(&pdev->dev, "lacking rts-gpio, disabling RS485\n");
+ port->rs485.flags &= ~SER_RS485_ENABLED;
+ }
}
#ifdef CONFIG_SERIAL_AR933X_CONSOLE
--
2.25.1
