serial: xuartps: 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/20221019091151.6692-44-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 2eff7cf..01d8027 100644 (file)
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -326,9 +326,7 @@ static void cdns_uart_handle_tx(void *dev_id)
               !(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_TXFULL)) {
 
                writel(xmit->buf[xmit->tail], port->membase + CDNS_UART_FIFO);
-
-               port->icount.tx++;
-               xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+               uart_xmit_advance(port, 1);
                numbytes--;
        }