> +
> +static void owl_uart_set_termios(struct uart_port *port,
> + struct ktermios *termios,
> + struct ktermios *old)
> +{
> + struct owl_uart_port *owl_port = to_owl_uart_port(port);
> + unsigned int baud;
> + u32 ctl;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&port->lock, flags);
> +
> + /* We don't support modem control lines. */
> + termios->c_cflag &= ~(HUPCL | CMSPAR);
> + termios->c_cflag |= CLOCAL;
CLOCAL and HUPCL are software not hardware properties so are probably
best not forced (it'll confuse some apps if you do)
> +
> + /* We don't support BREAK character recognition. */
> + termios->c_iflag &= ~(IGNBRK | BRKINT);
Ditto these
You do clear CMSPAR which is right if not supported but then later on we
have:
> + if (termios->c_cflag & PARENB) {
> + if (termios->c_cflag & CMSPAR) {
> + if (termios->c_cflag & PARODD)
> + ctl |= OWL_UART_CTL_PRS_MARK;
> + else
> + ctl |= OWL_UART_CTL_PRS_SPACE;
> + } else if (termios->c_cflag & PARODD)
> + ctl |= OWL_UART_CTL_PRS_ODD;
> + else
> + ctl |= OWL_UART_CTL_PRS_EVEN;
> + } else
> + ctl |= OWL_UART_CTL_PRS_NONE;
Which seems to indicate you do support CMSPAR so shouldn't be clearing it.
> +
> + if (termios->c_cflag & CRTSCTS)
> + ctl |= OWL_UART_CTL_AFE;
> + else
> + ctl &= ~OWL_UART_CTL_AFE;
> +
> + owl_uart_write(port, ctl, OWL_UART_CTL);
> +
> + baud = uart_get_baud_rate(port, termios, old, 9600, 3200000);
> + owl_uart_change_baudrate(owl_port, baud);
You should re-encode the resulting baud rate into the termios
/* Don't rewrite B0 */
if (tty_termios_baud_rate(termios))
tty_termios_encode_baud_rate(termios, baud, baud);
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