serial: sc16is7xx: Use uart_xmit_advance()

Take advantage of the new uart_xmit_advance() helper.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019091151.6692-6-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 524921360ca786bea6c0298f3b319f7170b28d76..39f92eb1e6989bb190b6442dbbebbd357a501c65 100644 (file)
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -686,13 +686,10 @@ static void sc16is7xx_handle_tx(struct uart_port *port)
                }
                to_send = (to_send > txlen) ? txlen : to_send;
 
-               /* Add data to send */
-               port->icount.tx += to_send;
-
                /* Convert to linear buffer */
                for (i = 0; i < to_send; ++i) {
                        s->buf[i] = xmit->buf[xmit->tail];
-                       xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+                       uart_xmit_advance(port, 1);
                }
 
                sc16is7xx_fifo_write(port, to_send);