There is no need to and tail with UART_XMIT_SIZE - 1 because tail is
already on valid range.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/sh-sci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 6d2f5a08ff1f..2ddcd7eec71e 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1407,7 +1407,7 @@ static void sci_dma_tx_work_fn(struct work_struct *work)
spin_lock_irq(&port->lock);
head = xmit->head;
tail = xmit->tail;
- buf = s->tx_dma_addr + (tail & (UART_XMIT_SIZE - 1));
+ buf = s->tx_dma_addr + tail;
s->tx_dma_len = CIRC_CNT_TO_END(head, tail, UART_XMIT_SIZE);
if (!s->tx_dma_len) {
/* Transmit buffer has been flushed */
--
2.30.2
