diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 8e8cca690bf9..0879bb8855cf 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -3204,6 +3204,7 @@ static void serial8250_console_restore(struct uart_8250_port *up) void serial8250_console_write(struct uart_8250_port *up, const char *s, unsigned int count) { + struct uart_8250_em485 *em485 = up->em485; struct uart_port *port = &up->port; unsigned long flags; unsigned int ier; @@ -3234,6 +3235,12 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s, up->canary = 0; } + if (em485) { + if (em485->tx_stopped) + up->rs485_start_tx(up); + mdelay(port->rs485.delay_rts_before_send); + } + uart_console_write(port, s, count, serial8250_console_putchar); /* @@ -3243,6 +3250,12 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s, wait_for_xmitr(up, BOTH_EMPTY); serial_port_out(port, UART_IER, ier); + if (em485) { + mdelay(port->rs485.delay_rts_before_send); + if (em485->tx_stopped) + up->rs485_stop_tx(up); + } + /* * The receive handling will happen properly because the * receive ready bit will still be set; it is not cleared |