Avoid repeating the same code for rs485 twice.
Make it obvious we clear CRTSCTS bit in termios->c_cflag whenever
sport->have_rtscts is false.
Make it obvious we clear UCR2_IRTS whenever CRTSCTS is set.
Reviewed-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Tested-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Signed-off-by: Sergey Organov <sorganov@xxxxxxxxx>
---
drivers/tty/serial/imx.c | 36 +++++++++++++-----------------------
1 file changed, 13 insertions(+), 23 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 87802fd..17e2322 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1567,35 +1567,25 @@ imx_uart_set_termios(struct uart_port *port, struct ktermios *termios,
if ((termios->c_cflag & CSIZE) == CS8)
ucr2 |= UCR2_WS;
- if (termios->c_cflag & CRTSCTS) {
- if (sport->have_rtscts) {
- ucr2 &= ~UCR2_IRTS;
+ if (!sport->have_rtscts)
+ termios->c_cflag &= ~CRTSCTS;
- if (port->rs485.flags & SER_RS485_ENABLED) {
- /*
- * RTS is mandatory for rs485 operation, so keep
- * it under manual control and keep transmitter
- * disabled.
- */
- if (port->rs485.flags &
- SER_RS485_RTS_AFTER_SEND)
- imx_uart_rts_active(sport, &ucr2);
- else
- imx_uart_rts_inactive(sport, &ucr2);
- } else {
- imx_uart_rts_auto(sport, &ucr2);
- }
- } else {
- termios->c_cflag &= ~CRTSCTS;
- }
- } else if (port->rs485.flags & SER_RS485_ENABLED) {
- /* disable transmitter */
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+ /*
+ * RTS is mandatory for rs485 operation, so keep
+ * it under manual control and keep transmitter
+ * disabled.
+ */
if (port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
imx_uart_rts_active(sport, &ucr2);
else
imx_uart_rts_inactive(sport, &ucr2);
- }
+ } else if (termios->c_cflag & CRTSCTS)
+ imx_uart_rts_auto(sport, &ucr2);
+
+ if (termios->c_cflag & CRTSCTS)
+ ucr2 &= ~UCR2_IRTS;
if (termios->c_cflag & CSTOPB)
ucr2 |= UCR2_STPB;
--
2.10.0.1.g57b01a3
