mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-01 01:14:19 -04:00
Code Issues Packages Projects Releases Wiki Activity

serial: ar933x: Fix check for RS485 support

Browse Source 
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: e849145e1f ("serial: ar933x: Fill in rs485_supported")
Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Link: https://lore.kernel.org/r/20220710164442.2958979-2-LinoSanfilippo@gmx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lino Sanfilippo
2022-07-10 18:44:35 +02:00
committed by Greg Kroah-Hartman
parent 3182efd036
commit 996fd3cf9c
1 changed files with 5 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/tty/serial/ar933x_uart.c
View File

@@ -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