From a54dc4b38186e63c30db68df42487464663ae5d0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ilpo=20J=C3=A4rvinen?= Date: Tue, 23 Aug 2022 17:18:37 +0300 Subject: [PATCH] serial: sh-sci: CIRC_CNT_TO_END() is enough MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Testing also CIRC_CNT() with CIRC_CNT_TO_END() is unnecessary because to latter alone covers all necessary cases. Reviewed-by: Jiri Slaby Signed-off-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20220823141839.165244-1-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sh-sci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 9ad3663b5152c..cd41fe069b897 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1408,9 +1408,7 @@ static void sci_dma_tx_work_fn(struct work_struct *work) head = xmit->head; tail = xmit->tail; buf = s->tx_dma_addr + (tail & (UART_XMIT_SIZE - 1)); - s->tx_dma_len = min_t(unsigned int, - CIRC_CNT(head, tail, UART_XMIT_SIZE), - CIRC_CNT_TO_END(head, tail, UART_XMIT_SIZE)); + s->tx_dma_len = CIRC_CNT_TO_END(head, tail, UART_XMIT_SIZE); if (!s->tx_dma_len) { /* Transmit buffer has been flushed */ spin_unlock_irq(&port->lock); -- 2.30.2