linux-kernel - [PATCH 17/44] serial: imx: Use uart_xmit

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Message-Id: <20221019091151.6692-18-ilpo.jarvinen@linux.intel.com>
Date:   Wed, 19 Oct 2022 12:11:24 +0300
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     linux-serial@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 17/44] serial: imx: Use uart_xmit_advance()

Take advantage of the new uart_xmit_advance() helper.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 drivers/tty/serial/imx.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 05b432dc7a85..a7548d0a1aee 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -563,8 +563,7 @@ static inline void imx_uart_transmit_buffer(struct imx_port *sport)
 		/* send xmit->buf[xmit->tail]
 		 * out the port here */
 		imx_uart_writel(sport, xmit->buf[xmit->tail], URTX0);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		sport->port.icount.tx++;
+		uart_xmit_advance(&sport->port, 1);
 	}
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
@@ -590,9 +589,7 @@ static void imx_uart_dma_tx_callback(void *data)
 	ucr1 &= ~UCR1_TXDMAEN;
 	imx_uart_writel(sport, ucr1, UCR1);
 
-	/* update the stat */
-	xmit->tail = (xmit->tail + sport->tx_bytes) & (UART_XMIT_SIZE - 1);
-	sport->port.icount.tx += sport->tx_bytes;
+	uart_xmit_advance(&sport->port, sport->tx_bytes);
 
 	dev_dbg(sport->port.dev, "we finish the TX DMA.\n");
 
-- 
2.30.2