serial: sh-sci: 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/20221019091151.6692-33-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 62f773286d44bb312f67f664799494fb2405276a..a92a8978035707b4a6a0e995493fc1d99edb5dad 100644 (file)
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1181,10 +1181,7 @@ static void sci_dma_tx_complete(void *arg)
 
        spin_lock_irqsave(&port->lock, flags);
 
-       xmit->tail += s->tx_dma_len;
-       xmit->tail &= UART_XMIT_SIZE - 1;
-
-       port->icount.tx += s->tx_dma_len;
+       uart_xmit_advance(port, s->tx_dma_len);
 
        if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
                uart_write_wakeup(port);