serial: pl011: 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/20221019091151.6692-9-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 5cdced39eafdb92758d5b4f79a123e2d76bf5f6b..6d8552506091cbcd84e7fac3ce6cba0f01699a48 100644 (file)
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -677,8 +677,7 @@ static int pl011_dma_tx_refill(struct uart_amba_port *uap)
         * Now we know that DMA will fire, so advance the ring buffer
         * with the stuff we just dispatched.
         */
-       xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
-       uap->port.icount.tx += count;
+       uart_xmit_advance(&uap->port, count);
 
        if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
                uart_write_wakeup(&uap->port);