| Message ID | 5b36af26e57553f084334666e7d24c7fd131a01e.1662887231.git.lukas@wunner.de |
|---|---|
| State | New |
| Headers | show |
| Series | serial: ar933x: Deassert Transmit Enable on ->rs485_config() | expand |
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c index 0a4020dba165..925484a42c82 100644 --- a/drivers/tty/serial/ar933x_uart.c +++ b/drivers/tty/serial/ar933x_uart.c @@ -583,6 +583,13 @@ static const struct uart_ops ar933x_uart_ops = { static int ar933x_config_rs485(struct uart_port *port, struct ktermios *termios, struct serial_rs485 *rs485conf) { + struct ar933x_uart_port *up = + container_of(port, struct ar933x_uart_port, port); + + if (port->rs485.flags & SER_RS485_ENABLED) + gpiod_set_value(up->rts_gpiod, + !!(rs485conf->flags & SER_RS485_RTS_AFTER_SEND)); + return 0; }
The ar933x_uart driver neglects to deassert Transmit Enable when ->rs485_config() is invoked. Fix it. Fixes: 9be1064fe524 ("serial: ar933x_uart: add RS485 support") Signed-off-by: Lukas Wunner <lukas@wunner.de> Cc: stable@vger.kernel.org # v5.7+ Cc: Daniel Golle <daniel@makrotopia.org> --- drivers/tty/serial/ar933x_uart.c | 7 +++++++ 1 file changed, 7 insertions(+)