From 575ca2cb89ea1dafc4005a208e77e7cd3f3edb40 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ilpo=20J=C3=A4rvinen?= Date: Tue, 23 Aug 2022 17:18:38 +0300 Subject: [PATCH] serial: sh-sci: tail is already on valid range MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit There is no need to and tail with UART_XMIT_SIZE - 1 because tail is already on valid range. Reviewed-by: Jiri Slaby Signed-off-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20220823141839.165244-2-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- 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 cd41fe069b897..62f773286d44b 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