Messages in this thread Patch in this message | | | From | Ilpo Järvinen <> | Subject | [PATCH 2/3] serial: sh-sci: tail is already on valid range | Date | Tue, 23 Aug 2022 17:18:38 +0300 |
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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@linux.intel.com> --- 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
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