[PATCH 39/44] serial: sunzilog: Use uart_xmit_advance()

[Ilpo Järvinen]

Take advantage of the new uart_xmit_advance() helper.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
 drivers/tty/serial/sunzilog.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index 87425290687d..ccb809216e94 100644
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -508,8 +508,7 @@ static void sunzilog_transmit_chars(struct uart_sunzilog_port *up,
 	ZSDELAY();
 	ZS_WSYNC(channel);
 
-	xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-	up->port.icount.tx++;
+	uart_xmit_advance(&up->port, 1);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(&up->port);
@@ -709,8 +708,7 @@ static void sunzilog_start_tx(struct uart_port *port)
 		ZSDELAY();
 		ZS_WSYNC(channel);
 
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
+		uart_xmit_advance(port, 1);
 
 		if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 			uart_write_wakeup(&up->port);
-- 
2.30.2