serial: mvebu-uart: Use uart_xmit_advance()

Take advantage of the new uart_xmit_advance() helper.

Reviewed-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019091151.6692-25-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c
index 7b566404cb331f813f1a6cd9600bfc65bf45bed0..31f739c7a08bf78f05912c097b2c67b8d9509580 100644 (file)
--- a/drivers/tty/serial/mvebu-uart.c
+++ b/drivers/tty/serial/mvebu-uart.c
@@ -223,8 +223,7 @@ static void mvebu_uart_start_tx(struct uart_port *port)
 
        if (IS_EXTENDED(port) && !uart_circ_empty(xmit)) {
                writel(xmit->buf[xmit->tail], port->membase + UART_TSH(port));
-               xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-               port->icount.tx++;
+               uart_xmit_advance(port, 1);
        }
 
        ctl = readl(port->membase + UART_INTR(port));