serial: rda: Use uart_xmit_advance()

Take advantage of the new uart_xmit_advance() helper.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019091151.6692-28-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/rda-uart.c b/drivers/tty/serial/rda-uart.c
index 0e387e2144fa25937ddfde1d26cf8fb47a68c5ea..be5c842b5ba951d126f78883ab0e8196ae1025cf 100644 (file)
--- a/drivers/tty/serial/rda-uart.c
+++ b/drivers/tty/serial/rda-uart.c
@@ -353,8 +353,7 @@ static void rda_uart_send_chars(struct uart_port *port)
 
                ch = xmit->buf[xmit->tail];
                rda_uart_write(port, ch, RDA_UART_RXTX_BUFFER);
-               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)