Re: [PATCH] tty: serial: Add RS422 flag to struct serial_rs485

[Jiri Slaby <jirislaby@xxxxxxxxxx>]

On 30. 10. 23, 6:36, Crescent CY Hsieh wrote:
> @@ -1371,11 +1371,26 @@ static void uart_sanitize_serial_rs485(struct uart_port *port, struct serial_rs4
>   {
>   	u32 supported_flags = port->rs485_supported.flags;
>   
> -	if (!(rs485->flags & SER_RS485_ENABLED)) {
> +	if (!(rs485->flags & (SER_RS485_ENABLED | SER_RS422_ENABLED))) {
>   		memset(rs485, 0, sizeof(*rs485));
>   		return;
>   	}
>   
> +	/* Pick sane setting if the user enables both interfaces */
> +	if (rs485->flags & (SER_RS485_ENABLED | SER_RS422_ENABLED)) {

This would have to be:
if (rs485->flags & (SER_RS485_ENABLED | SER_RS422_ENABLED) == 
SER_RS485_ENABLED | SER_RS422_ENABLED)

But your previous version:
  rs485->flags & SER_RS485_ENABLED && rs485->flags & SER_RS422_ENABLED
looked better in this case.

thanks,
--
js
suse labs